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10818 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Eric Biggers
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0961c3bcef |
lib/crc-t10dif: add support for arch overrides
Following what was done for CRC32, add support for architecture-specific override of the CRC-T10DIF library. This will allow the CRC-T10DIF library functions to access architecture-optimized code directly. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20241202012056.209768-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
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Eric Biggers
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be3c45b070 |
lib/crc-t10dif: stop wrapping the crypto API
In preparation for making the CRC-T10DIF library directly optimized for each architecture, like what has been done for CRC32, get rid of the weird layering where crc_t10dif_update() calls into the crypto API. Instead, move crc_t10dif_generic() into the crc-t10dif library module, and make crc_t10dif_update() just call crc_t10dif_generic(). Acceleration will be reintroduced via crc_t10dif_arch() in the following patches. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20241202012056.209768-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
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Eric Biggers
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38a9a5121c |
lib/crc32: make crc32c() go directly to lib
Now that the lower level __crc32c_le() library function is optimized for each architecture, make crc32c() just call that instead of taking an inefficient and error-prone detour through the shash API. Note: a future cleanup should make crc32c_le() be the actual library function instead of __crc32c_le(). That will require updating callers of __crc32c_le() to use crc32c_le() instead, and updating callers of crc32c_le() that expect a 'const void *' arg to expect 'const u8 *' instead. Similarly, a future cleanup should remove LIBCRC32C by making everyone who is selecting it just select CRC32 directly instead. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20241202010844.144356-16-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
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Eric Biggers
|
d36cebe03c |
lib/crc32: improve support for arch-specific overrides
Currently the CRC32 library functions are defined as weak symbols, and the arm64 and riscv architectures override them. This method of arch-specific overrides has the limitation that it only works when both the base and arch code is built-in. Also, it makes the arch-specific code be silently not used if it is accidentally built with lib-y instead of obj-y; unfortunately the RISC-V code does this. This commit reorganizes the code to have explicit *_arch() functions that are called when they are enabled, similar to how some of the crypto library code works (e.g. chacha_crypt() calls chacha_crypt_arch()). Make the existing kconfig choice for the CRC32 implementation also control whether the arch-optimized implementation (if one is available) is enabled or not. Make it enabled by default if CRC32 is also enabled. The result is that arch-optimized CRC32 library functions will be included automatically when appropriate, but it is now possible to disable them. They can also now be built as a loadable module if the CRC32 library functions happen to be used only by loadable modules, in which case the arch and base CRC32 modules will be automatically loaded via direct symbol dependency when appropriate. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20241202010844.144356-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
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Eric Biggers
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0a499a7e98 |
lib/crc32: drop leading underscores from __crc32c_le_base
Remove the leading underscores from __crc32c_le_base(). This is in preparation for adding crc32c_le_arch() and eventually renaming __crc32c_le() to crc32c_le(). Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20241202010844.144356-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
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Linus Torvalds
|
88862eeb47 |
vsnprintf: Removal of bprintf()
- Remove unused bprintf() function bprintf() was added with the rest of the "bin-printf" functions. These are functions that are used by trace_printk() that allows to quickly save the format and arguments into the ring buffer without the expensive processing of converting numbers to ASCII. Then on output, at a much later time, the ring buffer is read and the string processing occurs then. The bprintf() was added for consistency but was never used. It can be safely removed. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZ0yNShQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qmJ6AP9i8pFOjeMfb2hOBpJTzORkIXEbz5nG OCK/5aeSdjxy8QEAqafBSr5IQOxaTCFve1p7WSwdgmi2ZLmqEasaud0LmAk= =5bp1 -----END PGP SIGNATURE----- Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull bprintf() removal from Steven Rostedt: - Remove unused bprintf() function, that was added with the rest of the "bin-printf" functions. These are functions that are used by trace_printk() that allows to quickly save the format and arguments into the ring buffer without the expensive processing of converting numbers to ASCII. Then on output, at a much later time, the ring buffer is read and the string processing occurs then. The bprintf() was added for consistency but was never used. It can be safely removed. * tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: printf: Remove unused 'bprintf' |
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Linus Torvalds
|
9022ed0e7e |
strscpy: write destination buffer only once
The point behind strscpy() was to once and for all avoid all the problems with 'strncpy()' and later broken "fixed" versions like strlcpy() that just made things worse. So strscpy not only guarantees NUL-termination (unlike strncpy), it also doesn't do unnecessary padding at the destination. But at the same time also avoids byte-at-a-time reads and writes by _allowing_ some extra NUL writes - within the size, of course - so that the whole copy can be done with word operations. It is also stable in the face of a mutable source string: it explicitly does not read the source buffer multiple times (so an implementation using "strnlen()+memcpy()" would be wrong), and does not read the source buffer past the size (like the mis-design that is strlcpy does). Finally, the return value is designed to be simple and unambiguous: if the string cannot be copied fully, it returns an actual negative error, making error handling clearer and simpler (and the caller already knows the size of the buffer). Otherwise it returns the string length of the result. However, there was one final stability issue that can be important to callers: the stability of the destination buffer. In particular, the same way we shouldn't read the source buffer more than once, we should avoid doing multiple writes to the destination buffer: first writing a potentially non-terminated string, and then terminating it with NUL at the end does not result in a stable result buffer. Yes, it gives the right result in the end, but if the rule for the destination buffer was that it is _always_ NUL-terminated even when accessed concurrently with updates, the final byte of the buffer needs to always _stay_ as a NUL byte. [ Note that "final byte is NUL" here is literally about the final byte in the destination array, not the terminating NUL at the end of the string itself. There is no attempt to try to make concurrent reads and writes give any kind of consistent string length or contents, but we do want to guarantee that there is always at least that final terminating NUL character at the end of the destination array if it existed before ] This is relevant in the kernel for the tsk->comm[] array, for example. Even without locking (for either readers or writers), we want to know that while the buffer contents may be garbled, it is always a valid C string and always has a NUL character at 'comm[TASK_COMM_LEN-1]' (and never has any "out of thin air" data). So avoid any "copy possibly non-terminated string, and terminate later" behavior, and write the destination buffer only once. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Dr. David Alan Gilbert
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f69e63756f |
printf: Remove unused 'bprintf'
bprintf() is unused. Remove it. It was added in the commit
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Linus Torvalds
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55cb93fd24 |
Driver core changes for 6.13-rc1
Here is a small set of driver core changes for 6.13-rc1.
Nothing major for this merge cycle, except for the 2 simple merge
conflicts are here just to make life interesting.
Included in here are:
- sysfs core changes and preparations for more sysfs api cleanups that
can come through all driver trees after -rc1 is out
- fw_devlink fixes based on many reports and debugging sessions
- list_for_each_reverse() removal, no one was using it!
- last-minute seq_printf() format string bug found and fixed in many
drivers all at once.
- minor bugfixes and changes full details in the shortlog
As mentioned above, there is 2 merge conflicts with your tree, one is
where the file is removed (easy enough to resolve), the second is a
build time error, that has been found in linux-next and the fix can be
seen here:
https://lore.kernel.org/r/20241107212645.41252436@canb.auug.org.au
Other than that, the changes here have been in linux-next with no other
reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is a small set of driver core changes for 6.13-rc1.
Nothing major for this merge cycle, except for the two simple merge
conflicts are here just to make life interesting.
Included in here are:
- sysfs core changes and preparations for more sysfs api cleanups
that can come through all driver trees after -rc1 is out
- fw_devlink fixes based on many reports and debugging sessions
- list_for_each_reverse() removal, no one was using it!
- last-minute seq_printf() format string bug found and fixed in many
drivers all at once.
- minor bugfixes and changes full details in the shortlog"
* tag 'driver-core-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (35 commits)
Fix a potential abuse of seq_printf() format string in drivers
cpu: Remove spurious NULL in attribute_group definition
s390/con3215: Remove spurious NULL in attribute_group definition
perf: arm-ni: Remove spurious NULL in attribute_group definition
driver core: Constify bin_attribute definitions
sysfs: attribute_group: allow registration of const bin_attribute
firmware_loader: Fix possible resource leak in fw_log_firmware_info()
drivers: core: fw_devlink: Fix excess parameter description in docstring
driver core: class: Correct WARN() message in APIs class_(for_each|find)_device()
cacheinfo: Use of_property_present() for non-boolean properties
cdx: Fix cdx_mmap_resource() after constifying attr in ->mmap()
drivers: core: fw_devlink: Make the error message a bit more useful
phy: tegra: xusb: Set fwnode for xusb port devices
drm: display: Set fwnode for aux bus devices
driver core: fw_devlink: Stop trying to optimize cycle detection logic
driver core: Constify attribute arguments of binary attributes
sysfs: bin_attribute: add const read/write callback variants
sysfs: implement all BIN_ATTR_* macros in terms of __BIN_ATTR()
sysfs: treewide: constify attribute callback of bin_attribute::llseek()
sysfs: treewide: constify attribute callback of bin_attribute::mmap()
...
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Luis Chamberlain
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3e1d95b63c |
selftests: kallsyms: fix and clarify current test boundaries
Provide and clarify the existing ranges and what you should expect.
Fix the gen_test_kallsyms.sh script to accept different ranges.
Fixes:
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Luis Chamberlain
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7ea13556f7 |
selftests: kallsyms: fix double build stupidity
The current arrangement will have the test modules rebuilt on
any make without having the script or code actually change.
Take Masahiro Yamada's suggested fix and cleanups on the Makefile
to fix this.
Suggested-by: Masahiro Yamada <masahiroy@kernel.org>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes:
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Linus Torvalds
|
b5361254c9 |
Modules changes for v6.13-rc1
Highlights for this merge window:
* The whole caching of module code into huge pages by Mike Rapoport is going
in through Andrew Morton's tree due to some other code dependencies. That's
really the biggest highlight for Linux kernel modules in this release. With
it we share huge pages for modules, starting off with x86. Expect to see that
soon through Andrew!
* Helge Deller addressed some lingering low hanging fruit alignment
enhancements by. It is worth pointing out that from his old patch series
I dropped his vmlinux.lds.h change at Masahiro's request as he would
prefer this to be specified in asm code [0].
[0] https://lore.kernel.org/all/20240129192644.3359978-5-mcgrof@kernel.org/T/#m9efef5e700fbecd28b7afb462c15eed8ba78ef5a
* Matthew Maurer and Sami Tolvanen have been tag teaming to help
get us closer to a modversions for Rust. In this cycle we take in
quite a lot of the refactoring for ELF validation. I expect modversions
for Rust will be merged by v6.14 as that code is mostly ready now.
* Adds a new modules selftests: kallsyms which helps us tests find_symbol()
and the limits of kallsyms on Linux today.
* We have a realtime mailing list to kernel-ci testing for modules now
which relies and combines patchwork, kpd and kdevops:
- https://patchwork.kernel.org/project/linux-modules/list/
- https://github.com/linux-kdevops/kdevops/blob/main/docs/kernel-ci/README.md
- https://github.com/linux-kdevops/kdevops/blob/main/docs/kernel-ci/kernel-ci-kpd.md
- https://github.com/linux-kdevops/kdevops/blob/main/docs/kernel-ci/linux-modules-kdevops-ci.md
If you want to help avoid Linux kernel modules regressions, now its simple,
just add a new Linux modules sefltests under tools/testing/selftests/module/
That is it. All new selftests will be used and leveraged automatically by
the CI.
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Merge tag 'modules-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux
Pull modules updates from Luis Chamberlain:
- The whole caching of module code into huge pages by Mike Rapoport is
going in through Andrew Morton's tree due to some other code
dependencies. That's really the biggest highlight for Linux kernel
modules in this release. With it we share huge pages for modules,
starting off with x86. Expect to see that soon through Andrew!
- Helge Deller addressed some lingering low hanging fruit alignment
enhancements by. It is worth pointing out that from his old patch
series I dropped his vmlinux.lds.h change at Masahiro's request as he
would prefer this to be specified in asm code [0].
[0] https://lore.kernel.org/all/20240129192644.3359978-5-mcgrof@kernel.org/T/#m9efef5e700fbecd28b7afb462c15eed8ba78ef5a
- Matthew Maurer and Sami Tolvanen have been tag teaming to help get us
closer to a modversions for Rust. In this cycle we take in quite a
lot of the refactoring for ELF validation. I expect modversions for
Rust will be merged by v6.14 as that code is mostly ready now.
- Adds a new modules selftests: kallsyms which helps us tests
find_symbol() and the limits of kallsyms on Linux today.
- We have a realtime mailing list to kernel-ci testing for modules now
which relies and combines patchwork, kpd and kdevops:
https://patchwork.kernel.org/project/linux-modules/list/
https://github.com/linux-kdevops/kdevops/blob/main/docs/kernel-ci/README.md
https://github.com/linux-kdevops/kdevops/blob/main/docs/kernel-ci/kernel-ci-kpd.md
https://github.com/linux-kdevops/kdevops/blob/main/docs/kernel-ci/linux-modules-kdevops-ci.md
If you want to help avoid Linux kernel modules regressions, now its
simple, just add a new Linux modules sefltests under
tools/testing/selftests/module/ That is it. All new selftests will be
used and leveraged automatically by the CI.
* tag 'modules-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux:
tests/module/gen_test_kallsyms.sh: use 0 value for variables
scripts: Remove export_report.pl
selftests: kallsyms: add MODULE_DESCRIPTION
selftests: add new kallsyms selftests
module: Reformat struct for code style
module: Additional validation in elf_validity_cache_strtab
module: Factor out elf_validity_cache_strtab
module: Group section index calculations together
module: Factor out elf_validity_cache_index_str
module: Factor out elf_validity_cache_index_sym
module: Factor out elf_validity_cache_index_mod
module: Factor out elf_validity_cache_index_info
module: Factor out elf_validity_cache_secstrings
module: Factor out elf_validity_cache_sechdrs
module: Factor out elf_validity_ehdr
module: Take const arg in validate_section_offset
modules: Add missing entry for __ex_table
modules: Ensure 64-bit alignment on __ksymtab_* sections
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Linus Torvalds
|
e06635e26c |
slab updates for 6.13
-----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEe7vIQRWZI0iWSE3xu+CwddJFiJoFAmdERvEACgkQu+CwddJF iJre6Af9EBMVQiWJrmoMOjbGLqLgmZzSXRNxR862WGn4D/wesA1HmSlWgEn54hgc GIYIeD++v4JaIRNH0yZqb2UBSKjF/rYPDkKstnqgFaVakLoDrwkkwV2n3Gk5BEgR m/SzLGgoDWKR65I/oMpL6e2KrMOfMfjpB31qiVvdlaQd2Nv/5rw+gUVylxhNIZEH W11N3IC+e9hmgT3ZBpTmHeqNrlXE1+USWPrp/HV05Ndz6yf97JnP4Wr9f9pcyN3R aflLHR38+Q9cCfO7y8wNqtYvIV/kbqgdaqD76frSgalC4Lmz9+L+TZ2NuENCPoGj Xdbip2z+iffWhvqM+qooOLVxR0XqTA== =Sepb -----END PGP SIGNATURE----- Merge tag 'slab-for-6.13-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab Pull slab updates from Vlastimil Babka: - Add new slab_strict_numa boot parameter to enforce per-object memory policies on top of slab folio policies, for systems where saving cost of remote accesses is more important than minimizing slab allocation overhead (Christoph Lameter) - Fix for freeptr_offset alignment check being too strict for m68k (Geert Uytterhoeven) - krealloc() fixes for not violating __GFP_ZERO guarantees on krealloc() when slub_debug (redzone and object tracking) is enabled (Feng Tang) - Fix a memory leak in case sysfs registration fails for a slab cache, and also no longer fail to create the cache in that case (Hyeonggon Yoo) - Fix handling of detected consistency problems (due to buggy slab user) with slub_debug enabled, so that it does not cause further list corruption bugs (yuan.gao) - Code cleanup and kerneldocs polishing (Zhen Lei, Vlastimil Babka) * tag 'slab-for-6.13-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: slab: Fix too strict alignment check in create_cache() mm/slab: Allow cache creation to proceed even if sysfs registration fails mm/slub: Avoid list corruption when removing a slab from the full list mm/slub, kunit: Add testcase for krealloc redzone and zeroing mm/slub: Improve redzone check and zeroing for krealloc() mm/slub: Consider kfence case for get_orig_size() SLUB: Add support for per object memory policies mm, slab: add kerneldocs for common SLAB_ flags mm/slab: remove duplicate check in create_cache() mm/slub: Move krealloc() and related code to slub.c mm/kasan: Don't store metadata inside kmalloc object when slub_debug_orig_size is on |
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Linus Torvalds
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f5f4745a7f |
- The series "resource: A couple of cleanups" from Andy Shevchenko
performs some cleanups in the resource management code.
- The series "Improve the copy of task comm" from Yafang Shao addresses
possible race-induced overflows in the management of task_struct.comm[].
- The series "Remove unnecessary header includes from
{tools/}lib/list_sort.c" from Kuan-Wei Chiu adds some cleanups and a
small fix to the list_sort library code and to its selftest.
- The series "Enhance min heap API with non-inline functions and
optimizations" also from Kuan-Wei Chiu optimizes and cleans up the
min_heap library code.
- The series "nilfs2: Finish folio conversion" from Ryusuke Konishi
finishes off nilfs2's folioification.
- The series "add detect count for hung tasks" from Lance Yang adds more
userspace visibility into the hung-task detector's activity.
- Apart from that, singelton patches in many places - please see the
individual changelogs for details.
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Merge tag 'mm-nonmm-stable-2024-11-24-02-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- The series "resource: A couple of cleanups" from Andy Shevchenko
performs some cleanups in the resource management code
- The series "Improve the copy of task comm" from Yafang Shao addresses
possible race-induced overflows in the management of
task_struct.comm[]
- The series "Remove unnecessary header includes from
{tools/}lib/list_sort.c" from Kuan-Wei Chiu adds some cleanups and a
small fix to the list_sort library code and to its selftest
- The series "Enhance min heap API with non-inline functions and
optimizations" also from Kuan-Wei Chiu optimizes and cleans up the
min_heap library code
- The series "nilfs2: Finish folio conversion" from Ryusuke Konishi
finishes off nilfs2's folioification
- The series "add detect count for hung tasks" from Lance Yang adds
more userspace visibility into the hung-task detector's activity
- Apart from that, singelton patches in many places - please see the
individual changelogs for details
* tag 'mm-nonmm-stable-2024-11-24-02-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (71 commits)
gdb: lx-symbols: do not error out on monolithic build
kernel/reboot: replace sprintf() with sysfs_emit()
lib: util_macros_kunit: add kunit test for util_macros.h
util_macros.h: fix/rework find_closest() macros
Improve consistency of '#error' directive messages
ocfs2: fix uninitialized value in ocfs2_file_read_iter()
hung_task: add docs for hung_task_detect_count
hung_task: add detect count for hung tasks
dma-buf: use atomic64_inc_return() in dma_buf_getfile()
fs/proc/kcore.c: fix coccinelle reported ERROR instances
resource: avoid unnecessary resource tree walking in __region_intersects()
ocfs2: remove unused errmsg function and table
ocfs2: cluster: fix a typo
lib/scatterlist: use sg_phys() helper
checkpatch: always parse orig_commit in fixes tag
nilfs2: convert metadata aops from writepage to writepages
nilfs2: convert nilfs_recovery_copy_block() to take a folio
nilfs2: convert nilfs_page_count_clean_buffers() to take a folio
nilfs2: remove nilfs_writepage
nilfs2: convert checkpoint file to be folio-based
...
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Linus Torvalds
|
36843bfbf7 |
hardening updates for v6.13-rc1
- Disable __counted_by in Clang < 19.1.3 (Jan Hendrik Farr)
- string_helpers: Silence output truncation warning (Bartosz Golaszewski)
- compiler.h: Avoid needing BUILD_BUG_ON_ZERO() (Philipp Reisner)
- MAINTAINERS: Add kernel hardening keywords __counted_by{_le|_be}
(Thorsten Blum)
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Merge tag 'hardening-v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
- Disable __counted_by in Clang < 19.1.3 (Jan Hendrik Farr)
- string_helpers: Silence output truncation warning (Bartosz
Golaszewski)
- compiler.h: Avoid needing BUILD_BUG_ON_ZERO() (Philipp Reisner)
- MAINTAINERS: Add kernel hardening keywords __counted_by{_le|_be}
(Thorsten Blum)
* tag 'hardening-v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
Compiler Attributes: disable __counted_by for clang < 19.1.3
compiler.h: Fix undefined BUILD_BUG_ON_ZERO()
lib: string_helpers: silence snprintf() output truncation warning
MAINTAINERS: Add kernel hardening keywords __counted_by{_le|_be}
|
||
|
Linus Torvalds
|
5c00ff742b |
- The series "zram: optimal post-processing target selection" from
Sergey Senozhatsky improves zram's post-processing selection algorithm.
This leads to improved memory savings.
- Wei Yang has gone to town on the mapletree code, contributing several
series which clean up the implementation:
- "refine mas_mab_cp()"
- "Reduce the space to be cleared for maple_big_node"
- "maple_tree: simplify mas_push_node()"
- "Following cleanup after introduce mas_wr_store_type()"
- "refine storing null"
- The series "selftests/mm: hugetlb_fault_after_madv improvements" from
David Hildenbrand fixes this selftest for s390.
- The series "introduce pte_offset_map_{ro|rw}_nolock()" from Qi Zheng
implements some rationaizations and cleanups in the page mapping code.
- The series "mm: optimize shadow entries removal" from Shakeel Butt
optimizes the file truncation code by speeding up the handling of shadow
entries.
- The series "Remove PageKsm()" from Matthew Wilcox completes the
migration of this flag over to being a folio-based flag.
- The series "Unify hugetlb into arch_get_unmapped_area functions" from
Oscar Salvador implements a bunch of consolidations and cleanups in the
hugetlb code.
- The series "Do not shatter hugezeropage on wp-fault" from Dev Jain
takes away the wp-fault time practice of turning a huge zero page into
small pages. Instead we replace the whole thing with a THP. More
consistent cleaner and potentiall saves a large number of pagefaults.
- The series "percpu: Add a test case and fix for clang" from Andy
Shevchenko enhances and fixes the kernel's built in percpu test code.
- The series "mm/mremap: Remove extra vma tree walk" from Liam Howlett
optimizes mremap() by avoiding doing things which we didn't need to do.
- The series "Improve the tmpfs large folio read performance" from
Baolin Wang teaches tmpfs to copy data into userspace at the folio size
rather than as individual pages. A 20% speedup was observed.
- The series "mm/damon/vaddr: Fix issue in
damon_va_evenly_split_region()" fro Zheng Yejian fixes DAMON splitting.
- The series "memcg-v1: fully deprecate charge moving" from Shakeel Butt
removes the long-deprecated memcgv2 charge moving feature.
- The series "fix error handling in mmap_region() and refactor" from
Lorenzo Stoakes cleanup up some of the mmap() error handling and
addresses some potential performance issues.
- The series "x86/module: use large ROX pages for text allocations" from
Mike Rapoport teaches x86 to use large pages for read-only-execute
module text.
- The series "page allocation tag compression" from Suren Baghdasaryan
is followon maintenance work for the new page allocation profiling
feature.
- The series "page->index removals in mm" from Matthew Wilcox remove
most references to page->index in mm/. A slow march towards shrinking
struct page.
- The series "damon/{self,kunit}tests: minor fixups for DAMON debugfs
interface tests" from Andrew Paniakin performs maintenance work for
DAMON's self testing code.
- The series "mm: zswap swap-out of large folios" from Kanchana Sridhar
improves zswap's batching of compression and decompression. It is a
step along the way towards using Intel IAA hardware acceleration for
this zswap operation.
- The series "kasan: migrate the last module test to kunit" from
Sabyrzhan Tasbolatov completes the migration of the KASAN built-in tests
over to the KUnit framework.
- The series "implement lightweight guard pages" from Lorenzo Stoakes
permits userapace to place fault-generating guard pages within a single
VMA, rather than requiring that multiple VMAs be created for this.
Improved efficiencies for userspace memory allocators are expected.
- The series "memcg: tracepoint for flushing stats" from JP Kobryn uses
tracepoints to provide increased visibility into memcg stats flushing
activity.
- The series "zram: IDLE flag handling fixes" from Sergey Senozhatsky
fixes a zram buglet which potentially affected performance.
- The series "mm: add more kernel parameters to control mTHP" from
Maíra Canal enhances our ability to control/configuremultisize THP from
the kernel boot command line.
- The series "kasan: few improvements on kunit tests" from Sabyrzhan
Tasbolatov has a couple of fixups for the KASAN KUnit tests.
- The series "mm/list_lru: Split list_lru lock into per-cgroup scope"
from Kairui Song optimizes list_lru memory utilization when lockdep is
enabled.
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Merge tag 'mm-stable-2024-11-18-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- The series "zram: optimal post-processing target selection" from
Sergey Senozhatsky improves zram's post-processing selection
algorithm. This leads to improved memory savings.
- Wei Yang has gone to town on the mapletree code, contributing several
series which clean up the implementation:
- "refine mas_mab_cp()"
- "Reduce the space to be cleared for maple_big_node"
- "maple_tree: simplify mas_push_node()"
- "Following cleanup after introduce mas_wr_store_type()"
- "refine storing null"
- The series "selftests/mm: hugetlb_fault_after_madv improvements" from
David Hildenbrand fixes this selftest for s390.
- The series "introduce pte_offset_map_{ro|rw}_nolock()" from Qi Zheng
implements some rationaizations and cleanups in the page mapping
code.
- The series "mm: optimize shadow entries removal" from Shakeel Butt
optimizes the file truncation code by speeding up the handling of
shadow entries.
- The series "Remove PageKsm()" from Matthew Wilcox completes the
migration of this flag over to being a folio-based flag.
- The series "Unify hugetlb into arch_get_unmapped_area functions" from
Oscar Salvador implements a bunch of consolidations and cleanups in
the hugetlb code.
- The series "Do not shatter hugezeropage on wp-fault" from Dev Jain
takes away the wp-fault time practice of turning a huge zero page
into small pages. Instead we replace the whole thing with a THP. More
consistent cleaner and potentiall saves a large number of pagefaults.
- The series "percpu: Add a test case and fix for clang" from Andy
Shevchenko enhances and fixes the kernel's built in percpu test code.
- The series "mm/mremap: Remove extra vma tree walk" from Liam Howlett
optimizes mremap() by avoiding doing things which we didn't need to
do.
- The series "Improve the tmpfs large folio read performance" from
Baolin Wang teaches tmpfs to copy data into userspace at the folio
size rather than as individual pages. A 20% speedup was observed.
- The series "mm/damon/vaddr: Fix issue in
damon_va_evenly_split_region()" fro Zheng Yejian fixes DAMON
splitting.
- The series "memcg-v1: fully deprecate charge moving" from Shakeel
Butt removes the long-deprecated memcgv2 charge moving feature.
- The series "fix error handling in mmap_region() and refactor" from
Lorenzo Stoakes cleanup up some of the mmap() error handling and
addresses some potential performance issues.
- The series "x86/module: use large ROX pages for text allocations"
from Mike Rapoport teaches x86 to use large pages for
read-only-execute module text.
- The series "page allocation tag compression" from Suren Baghdasaryan
is followon maintenance work for the new page allocation profiling
feature.
- The series "page->index removals in mm" from Matthew Wilcox remove
most references to page->index in mm/. A slow march towards shrinking
struct page.
- The series "damon/{self,kunit}tests: minor fixups for DAMON debugfs
interface tests" from Andrew Paniakin performs maintenance work for
DAMON's self testing code.
- The series "mm: zswap swap-out of large folios" from Kanchana Sridhar
improves zswap's batching of compression and decompression. It is a
step along the way towards using Intel IAA hardware acceleration for
this zswap operation.
- The series "kasan: migrate the last module test to kunit" from
Sabyrzhan Tasbolatov completes the migration of the KASAN built-in
tests over to the KUnit framework.
- The series "implement lightweight guard pages" from Lorenzo Stoakes
permits userapace to place fault-generating guard pages within a
single VMA, rather than requiring that multiple VMAs be created for
this. Improved efficiencies for userspace memory allocators are
expected.
- The series "memcg: tracepoint for flushing stats" from JP Kobryn uses
tracepoints to provide increased visibility into memcg stats flushing
activity.
- The series "zram: IDLE flag handling fixes" from Sergey Senozhatsky
fixes a zram buglet which potentially affected performance.
- The series "mm: add more kernel parameters to control mTHP" from
Maíra Canal enhances our ability to control/configuremultisize THP
from the kernel boot command line.
- The series "kasan: few improvements on kunit tests" from Sabyrzhan
Tasbolatov has a couple of fixups for the KASAN KUnit tests.
- The series "mm/list_lru: Split list_lru lock into per-cgroup scope"
from Kairui Song optimizes list_lru memory utilization when lockdep
is enabled.
* tag 'mm-stable-2024-11-18-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (215 commits)
cma: enforce non-zero pageblock_order during cma_init_reserved_mem()
mm/kfence: add a new kunit test test_use_after_free_read_nofault()
zram: fix NULL pointer in comp_algorithm_show()
memcg/hugetlb: add hugeTLB counters to memcg
vmstat: call fold_vm_zone_numa_events() before show per zone NUMA event
mm: mmap_lock: check trace_mmap_lock_$type_enabled() instead of regcount
zram: ZRAM_DEF_COMP should depend on ZRAM
MAINTAINERS/MEMORY MANAGEMENT: add document files for mm
Docs/mm/damon: recommend academic papers to read and/or cite
mm: define general function pXd_init()
kmemleak: iommu/iova: fix transient kmemleak false positive
mm/list_lru: simplify the list_lru walk callback function
mm/list_lru: split the lock to per-cgroup scope
mm/list_lru: simplify reparenting and initial allocation
mm/list_lru: code clean up for reparenting
mm/list_lru: don't export list_lru_add
mm/list_lru: don't pass unnecessary key parameters
kasan: add kunit tests for kmalloc_track_caller, kmalloc_node_track_caller
kasan: change kasan_atomics kunit test as KUNIT_CASE_SLOW
kasan: use EXPORT_SYMBOL_IF_KUNIT to export symbols
...
|
||
|
Linus Torvalds
|
e288c352a4 |
linux_kselftest-kunit-6.13-rc1-fixed
kunit update for Linux 6.13-rc1
-- fixes user-after-free (UAF) bug in kunit_init_suite()
-- adds option to kunit tool to print just the summary of test results
-- adds option to kunit tool to print just the failed test results
-- fixes kunit_zalloc_skb() to use user passed in gfp value instead of
hardcoding GFP_KERNEL
-- fixes kunit_zalloc_skb() kernel doc to include allocation flags variable
-- updates KUnit email address for Brendan Higgins
-- adds LoongArch config to qemu_configs
-- changes tool to allow overriding the shutdown mode from qemu config
-- enables shutdown in loongarch qemu_config
-- fixes potential null dereference in kunit_device_driver_test()
-- fixes debugfs to use IS_ERR() for alloc_string_stream() error check
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Merge tag 'linux_kselftest-kunit-6.13-rc1-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit updates from Shuah Khan:
- fix user-after-free (UAF) bug in kunit_init_suite()
- add option to kunit tool to print just the summary of test results
- add option to kunit tool to print just the failed test results
- fix kunit_zalloc_skb() to use user passed in gfp value instead of
hardcoding GFP_KERNEL
- fixe kunit_zalloc_skb() kernel doc to include allocation flags
variable
- update KUnit email address for Brendan Higgins
- add LoongArch config to qemu_configs
- allow overriding the shutdown mode from qemu config
- enable shutdown in loongarch qemu_config
- fix potential null dereference in kunit_device_driver_test()
- fix debugfs to use IS_ERR() for alloc_string_stream() error check
* tag 'linux_kselftest-kunit-6.13-rc1-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: qemu_configs: loongarch: Enable shutdown
kunit: tool: Allow overriding the shutdown mode from qemu config
kunit: qemu_configs: Add LoongArch config
kunit: debugfs: Use IS_ERR() for alloc_string_stream() error check
kunit: Fix potential null dereference in kunit_device_driver_test()
MAINTAINERS: Update KUnit email address for Brendan Higgins
kunit: string-stream: Fix a UAF bug in kunit_init_suite()
kunit: tool: print failed tests only
kunit: tool: Only print the summary
kunit: skb: add gfp to kernel doc for kunit_zalloc_skb()
kunit: skb: use "gfp" variable instead of hardcoding GFP_KERNEL
|
||
|
Linus Torvalds
|
563cb0b1e7 |
cxl changes for v6.13
- Constify range_contains() input parameters to prevent changes.
- Add support for displaying RCD capabilities in sysfs to support lspci for CXL device.
- Downgrade warning message to debug in cxl_probe_component_regs().
- Add support for adding a printf specifier '$pra' to emit 'struct range' content.
- Add sanity tests for 'struct resource'.
- Add documentation for special case.
- Add %pra for 'struct range'.
- Add %pra usage in CXL code.
- Add preparation code for DCD support
- Add range_overlaps().
- Add CDAT DSMAS table shared and read only flag in ACPICA.
- Add documentation to 'struct dev_dax_range'.
- Delay event buffer allocation in CXL PCI code until needed.
- Use guard() in cxl_dpa_set_mode().
- Refactor create region code to consolidate common code.
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Merge tag 'cxl-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull cxl updates from Dave Jiang:
- Constify range_contains() input parameters to prevent changes
- Add support for displaying RCD capabilities in sysfs to support lspci
for CXL device
- Downgrade warning message to debug in cxl_probe_component_regs()
- Add support for adding a printf specifier '%pra' to emit 'struct
range' content:
- Add sanity tests for 'struct resource'
- Add documentation for special case
- Add %pra for 'struct range'
- Add %pra usage in CXL code
- Add preparation code for DCD support:
- Add range_overlaps()
- Add CDAT DSMAS table shared and read only flag in ACPICA
- Add documentation to 'struct dev_dax_range'
- Delay event buffer allocation in CXL PCI code until needed
- Use guard() in cxl_dpa_set_mode()
- Refactor create region code to consolidate common code
* tag 'cxl-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
cxl/region: Refactor common create region code
cxl/hdm: Use guard() in cxl_dpa_set_mode()
cxl/pci: Delay event buffer allocation
dax: Document struct dev_dax_range
ACPI/CDAT: Add CDAT/DSMAS shared and read only flag values
range: Add range_overlaps()
cxl/cdat: Use %pra for dpa range outputs
printf: Add print format (%pra) for struct range
Documentation/printf: struct resource add start == end special case
test printf: Add very basic struct resource tests
cxl: downgrade a warning message to debug level in cxl_probe_component_regs()
cxl/pci: Add sysfs attribute for CXL 1.1 device link status
cxl/core/regs: Add rcd_pcie_cap initialization
kernel/range: Const-ify range_contains parameters
|
||
|
Linus Torvalds
|
fcc79e1714 |
Networking changes for 6.13.
The most significant set of changes is the per netns RTNL. The new
behavior is disabled by default, regression risk should be contained.
Notably the new config knob PTP_1588_CLOCK_VMCLOCK will inherit its
default value from PTP_1588_CLOCK_KVM, as the first is intended to be
a more reliable replacement for the latter.
Core
----
- Started a very large, in-progress, effort to make the RTNL lock
scope per network-namespace, thus reducing the lock contention
significantly in the containerized use-case, comprising:
- RCU-ified some relevant slices of the FIB control path
- introduce basic per netns locking helpers
- namespacified the IPv4 address hash table
- remove rtnl_register{,_module}() in favour of rtnl_register_many()
- refactor rtnl_{new,del,set}link() moving as much validation as
possible out of RTNL lock
- convert all phonet doit() and dumpit() handlers to RCU
- convert IPv4 addresses manipulation to per-netns RTNL
- convert virtual interface creation to per-netns RTNL
the per-netns lock infra is guarded by the CONFIG_DEBUG_NET_SMALL_RTNL
knob, disabled by default ad interim.
- Introduce NAPI suspension, to efficiently switching between busy
polling (NAPI processing suspended) and normal processing.
- Migrate the IPv4 routing input, output and control path from direct
ToS usage to DSCP macros. This is a work in progress to make ECN
handling consistent and reliable.
- Add drop reasons support to the IPv4 rotue input path, allowing
better introspection in case of packets drop.
- Make FIB seqnum lockless, dropping RTNL protection for read
access.
- Make inet{,v6} addresses hashing less predicable.
- Allow providing timestamp OPT_ID via cmsg, to correlate TX packets
and timestamps
Things we sprinkled into general kernel code
--------------------------------------------
- Add small file operations for debugfs, to reduce the struct ops size.
- Refactoring and optimization for the implementation of page_frag API,
This is a preparatory work to consolidate the page_frag
implementation.
Netfilter
---------
- Optimize set element transactions to reduce memory consumption
- Extended netlink error reporting for attribute parser failure.
- Make legacy xtables configs user selectable, giving users
the option to configure iptables without enabling any other config.
- Address a lot of false-positive RCU issues, pointed by recent
CI improvements.
BPF
---
- Put xsk sockets on a struct diet and add various cleanups. Overall,
this helps to bump performance by 12% for some workloads.
- Extend BPF selftests to increase coverage of XDP features in
combination with BPF cpumap.
- Optimize and homogenize bpf_csum_diff helper for all archs and also
add a batch of new BPF selftests for it.
- Extend netkit with an option to delegate skb->{mark,priority}
scrubbing to its BPF program.
- Make the bpf_get_netns_cookie() helper available also to tc(x) BPF
programs.
Protocols
---------
- Introduces 4-tuple hash for connected udp sockets, speeding-up
significantly connected sockets lookup.
- Add a fastpath for some TCP timers that usually expires after close,
the socket lock contention.
- Add inbound and outbound xfrm state caches to speed up state lookups.
- Avoid sending MPTCP advertisements on stale subflows, reducing
risks on loosing them.
- Make neighbours table flushing more scalable, maintaining per device
neigh lists.
Driver API
----------
- Introduce a unified interface to configure transmission H/W shaping,
and expose it to user-space via generic-netlink.
- Add support for per-NAPI config via netlink. This makes napi
configuration persistent across queues removal and re-creation.
Requires driver updates, currently supported drivers are:
nVidia/Mellanox mlx4 and mlx5, Broadcom brcm and Intel ice.
- Add ethtool support for writing SFP / PHY firmware blocks.
- Track RSS context allocation from ethtool core.
- Implement support for mirroring to DSA CPU port, via TC mirror
offload.
- Consolidate FDB updates notification, to avoid duplicates on
device-specific entries.
- Expose DPLL clock quality level to the user-space.
- Support master-slave PHY config via device tree.
Tests and tooling
-----------------
- forwarding: introduce deferred commands, to simplify
the cleanup phase
Drivers
-------
- Updated several drivers - Amazon vNic, Google vNic, Microsoft vNic,
Intel e1000e and Broadcom Tigon3 - to use netdev-genl to link the
IRQs and queues to NAPI IDs, allowing busy polling and better
introspection.
- Ethernet high-speed NICs:
- nVidia/Mellanox:
- mlx5:
- a large refactor to implement support for cross E-Switch
scheduling
- refactor H/W conter management to let it scale better
- H/W GRO cleanups
- Intel (100G, ice)::
- adds support for ethtool reset
- implement support for per TX queue H/W shaping
- AMD/Solarflare:
- implement per device queue stats support
- Broadcom (bnxt):
- improve wildcard l4proto on IPv4/IPv6 ntuple rules
- Marvell Octeon:
- Adds representor support for each Resource Virtualization Unit
(RVU) device.
- Hisilicon:
- adds support for the BMC Gigabit Ethernet
- IBM (EMAC):
- driver cleanup and modernization
- Cisco (VIC):
- raise the queues number limit to 256
- Ethernet virtual:
- Google vNIC:
- implements page pool support
- macsec:
- inherit lower device's features and TSO limits when offloading
- virtio_net:
- enable premapped mode by default
- support for XDP socket(AF_XDP) zerocopy TX
- wireguard:
- set the TSO max size to be GSO_MAX_SIZE, to aggregate larger
packets.
- Ethernet NICs embedded and virtual:
- Broadcom ASP:
- enable software timestamping
- Freescale:
- add enetc4 PF driver
- MediaTek: Airoha SoC:
- implement BQL support
- RealTek r8169:
- enable TSO by default on r8168/r8125
- implement extended ethtool stats
- Renesas AVB:
- enable TX checksum offload
- Synopsys (stmmac):
- support header splitting for vlan tagged packets
- move common code for DWMAC4 and DWXGMAC into a separate FPE
module.
- Add the dwmac driver support for T-HEAD TH1520 SoC
- Synopsys (xpcs):
- driver refactor and cleanup
- TI:
- icssg_prueth: add VLAN offload support
- Xilinx emaclite:
- adds clock support
- Ethernet switches:
- Microchip:
- implement support for the lan969x Ethernet switch family
- add LAN9646 switch support to KSZ DSA driver
- Ethernet PHYs:
- Marvel: 88q2x: enable auto negotiation
- Microchip: add support for LAN865X Rev B1 and LAN867X Rev C1/C2
- PTP:
- Add support for the Amazon virtual clock device
- Add PtP driver for s390 clocks
- WiFi:
- mac80211
- EHT 1024 aggregation size for transmissions
- new operation to indicate that a new interface is to be added
- support radio separation of multi-band devices
- move wireless extension spy implementation to libiw
- Broadcom:
- brcmfmac: optional LPO clock support
- Microchip:
- add support for Atmel WILC3000
- Qualcomm (ath12k):
- firmware coredump collection support
- add debugfs support for a multitude of statistics
- Qualcomm (ath5k):
- Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
- Realtek:
- rtw88: 8821au and 8812au USB adapters support
- rtw89: add thermal protection
- rtw89: fine tune BT-coexsitence to improve user experience
- rtw89: firmware secure boot for WiFi 6 chip
- Bluetooth
- add Qualcomm WCN785x support for ids Foxconn 0xe0fc/0xe0f3 and
0x13d3:0x3623
- add Realtek RTL8852BE support for id Foxconn 0xe123
- add MediaTek MT7920 support for wireless module ids
- btintel_pcie: add handshake between driver and firmware
- btintel_pcie: add recovery mechanism
- btnxpuart: add GPIO support to power save feature
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"The most significant set of changes is the per netns RTNL. The new
behavior is disabled by default, regression risk should be contained.
Notably the new config knob PTP_1588_CLOCK_VMCLOCK will inherit its
default value from PTP_1588_CLOCK_KVM, as the first is intended to be
a more reliable replacement for the latter.
Core:
- Started a very large, in-progress, effort to make the RTNL lock
scope per network-namespace, thus reducing the lock contention
significantly in the containerized use-case, comprising:
- RCU-ified some relevant slices of the FIB control path
- introduce basic per netns locking helpers
- namespacified the IPv4 address hash table
- remove rtnl_register{,_module}() in favour of
rtnl_register_many()
- refactor rtnl_{new,del,set}link() moving as much validation as
possible out of RTNL lock
- convert all phonet doit() and dumpit() handlers to RCU
- convert IPv4 addresses manipulation to per-netns RTNL
- convert virtual interface creation to per-netns RTNL
the per-netns lock infrastructure is guarded by the
CONFIG_DEBUG_NET_SMALL_RTNL knob, disabled by default ad interim.
- Introduce NAPI suspension, to efficiently switching between busy
polling (NAPI processing suspended) and normal processing.
- Migrate the IPv4 routing input, output and control path from direct
ToS usage to DSCP macros. This is a work in progress to make ECN
handling consistent and reliable.
- Add drop reasons support to the IPv4 rotue input path, allowing
better introspection in case of packets drop.
- Make FIB seqnum lockless, dropping RTNL protection for read access.
- Make inet{,v6} addresses hashing less predicable.
- Allow providing timestamp OPT_ID via cmsg, to correlate TX packets
and timestamps
Things we sprinkled into general kernel code:
- Add small file operations for debugfs, to reduce the struct ops
size.
- Refactoring and optimization for the implementation of page_frag
API, This is a preparatory work to consolidate the page_frag
implementation.
Netfilter:
- Optimize set element transactions to reduce memory consumption
- Extended netlink error reporting for attribute parser failure.
- Make legacy xtables configs user selectable, giving users the
option to configure iptables without enabling any other config.
- Address a lot of false-positive RCU issues, pointed by recent CI
improvements.
BPF:
- Put xsk sockets on a struct diet and add various cleanups. Overall,
this helps to bump performance by 12% for some workloads.
- Extend BPF selftests to increase coverage of XDP features in
combination with BPF cpumap.
- Optimize and homogenize bpf_csum_diff helper for all archs and also
add a batch of new BPF selftests for it.
- Extend netkit with an option to delegate skb->{mark,priority}
scrubbing to its BPF program.
- Make the bpf_get_netns_cookie() helper available also to tc(x) BPF
programs.
Protocols:
- Introduces 4-tuple hash for connected udp sockets, speeding-up
significantly connected sockets lookup.
- Add a fastpath for some TCP timers that usually expires after
close, the socket lock contention.
- Add inbound and outbound xfrm state caches to speed up state
lookups.
- Avoid sending MPTCP advertisements on stale subflows, reducing
risks on loosing them.
- Make neighbours table flushing more scalable, maintaining per
device neigh lists.
Driver API:
- Introduce a unified interface to configure transmission H/W
shaping, and expose it to user-space via generic-netlink.
- Add support for per-NAPI config via netlink. This makes napi
configuration persistent across queues removal and re-creation.
Requires driver updates, currently supported drivers are:
nVidia/Mellanox mlx4 and mlx5, Broadcom brcm and Intel ice.
- Add ethtool support for writing SFP / PHY firmware blocks.
- Track RSS context allocation from ethtool core.
- Implement support for mirroring to DSA CPU port, via TC mirror
offload.
- Consolidate FDB updates notification, to avoid duplicates on
device-specific entries.
- Expose DPLL clock quality level to the user-space.
- Support master-slave PHY config via device tree.
Tests and tooling:
- forwarding: introduce deferred commands, to simplify the cleanup
phase
Drivers:
- Updated several drivers - Amazon vNic, Google vNic, Microsoft vNic,
Intel e1000e and Broadcom Tigon3 - to use netdev-genl to link the
IRQs and queues to NAPI IDs, allowing busy polling and better
introspection.
- Ethernet high-speed NICs:
- nVidia/Mellanox:
- mlx5:
- a large refactor to implement support for cross E-Switch
scheduling
- refactor H/W conter management to let it scale better
- H/W GRO cleanups
- Intel (100G, ice)::
- add support for ethtool reset
- implement support for per TX queue H/W shaping
- AMD/Solarflare:
- implement per device queue stats support
- Broadcom (bnxt):
- improve wildcard l4proto on IPv4/IPv6 ntuple rules
- Marvell Octeon:
- Add representor support for each Resource Virtualization Unit
(RVU) device.
- Hisilicon:
- add support for the BMC Gigabit Ethernet
- IBM (EMAC):
- driver cleanup and modernization
- Cisco (VIC):
- raise the queues number limit to 256
- Ethernet virtual:
- Google vNIC:
- implement page pool support
- macsec:
- inherit lower device's features and TSO limits when
offloading
- virtio_net:
- enable premapped mode by default
- support for XDP socket(AF_XDP) zerocopy TX
- wireguard:
- set the TSO max size to be GSO_MAX_SIZE, to aggregate larger
packets.
- Ethernet NICs embedded and virtual:
- Broadcom ASP:
- enable software timestamping
- Freescale:
- add enetc4 PF driver
- MediaTek: Airoha SoC:
- implement BQL support
- RealTek r8169:
- enable TSO by default on r8168/r8125
- implement extended ethtool stats
- Renesas AVB:
- enable TX checksum offload
- Synopsys (stmmac):
- support header splitting for vlan tagged packets
- move common code for DWMAC4 and DWXGMAC into a separate FPE
module.
- add dwmac driver support for T-HEAD TH1520 SoC
- Synopsys (xpcs):
- driver refactor and cleanup
- TI:
- icssg_prueth: add VLAN offload support
- Xilinx emaclite:
- add clock support
- Ethernet switches:
- Microchip:
- implement support for the lan969x Ethernet switch family
- add LAN9646 switch support to KSZ DSA driver
- Ethernet PHYs:
- Marvel: 88q2x: enable auto negotiation
- Microchip: add support for LAN865X Rev B1 and LAN867X Rev C1/C2
- PTP:
- Add support for the Amazon virtual clock device
- Add PtP driver for s390 clocks
- WiFi:
- mac80211
- EHT 1024 aggregation size for transmissions
- new operation to indicate that a new interface is to be added
- support radio separation of multi-band devices
- move wireless extension spy implementation to libiw
- Broadcom:
- brcmfmac: optional LPO clock support
- Microchip:
- add support for Atmel WILC3000
- Qualcomm (ath12k):
- firmware coredump collection support
- add debugfs support for a multitude of statistics
- Qualcomm (ath5k):
- Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
- Realtek:
- rtw88: 8821au and 8812au USB adapters support
- rtw89: add thermal protection
- rtw89: fine tune BT-coexsitence to improve user experience
- rtw89: firmware secure boot for WiFi 6 chip
- Bluetooth
- add Qualcomm WCN785x support for ids Foxconn 0xe0fc/0xe0f3 and
0x13d3:0x3623
- add Realtek RTL8852BE support for id Foxconn 0xe123
- add MediaTek MT7920 support for wireless module ids
- btintel_pcie: add handshake between driver and firmware
- btintel_pcie: add recovery mechanism
- btnxpuart: add GPIO support to power save feature"
* tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1475 commits)
mm: page_frag: fix a compile error when kernel is not compiled
Documentation: tipc: fix formatting issue in tipc.rst
selftests: nic_performance: Add selftest for performance of NIC driver
selftests: nic_link_layer: Add selftest case for speed and duplex states
selftests: nic_link_layer: Add link layer selftest for NIC driver
bnxt_en: Add FW trace coredump segments to the coredump
bnxt_en: Add a new ethtool -W dump flag
bnxt_en: Add 2 parameters to bnxt_fill_coredump_seg_hdr()
bnxt_en: Add functions to copy host context memory
bnxt_en: Do not free FW log context memory
bnxt_en: Manage the FW trace context memory
bnxt_en: Allocate backing store memory for FW trace logs
bnxt_en: Add a 'force' parameter to bnxt_free_ctx_mem()
bnxt_en: Refactor bnxt_free_ctx_mem()
bnxt_en: Add mem_valid bit to struct bnxt_ctx_mem_type
bnxt_en: Update firmware interface spec to 1.10.3.85
selftests/bpf: Add some tests with sockmap SK_PASS
bpf: fix recursive lock when verdict program return SK_PASS
wireguard: device: support big tcp GSO
wireguard: selftests: load nf_conntrack if not present
...
|
||
|
Linus Torvalds
|
79caa6c88a |
asm-generic updates for 6.13
These are a number of unrelated cleanups, generally simplifying the
architecture specific header files:
- A series from Al Viro simplifies asm/vga.h, after it turns out that
most of it can be generalized.
- A series from Julian Vetter adds a common version of
memcpy_{to,from}io() and memset_io() and changes most architectures
to use that instead of their own implementation
- A series from Niklas Schnelle concludes his work to make PC
style inb()/outb() optional
- Nicolas Pitre contributes improvements for the generic do_div()
helper
- Christoph Hellwig adds a generic version of page_to_phys()
and phys_to_page(), replacing the slightly different architecture
specific definitions.
- Uwe Kleine-Koenig has a minor cleanup for ioctl definitions
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Merge tag 'asm-generic-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic updates from Arnd Bergmann:
"These are a number of unrelated cleanups, generally simplifying the
architecture specific header files:
- A series from Al Viro simplifies asm/vga.h, after it turns out that
most of it can be generalized.
- A series from Julian Vetter adds a common version of
memcpy_{to,from}io() and memset_io() and changes most architectures
to use that instead of their own implementation
- A series from Niklas Schnelle concludes his work to make PC style
inb()/outb() optional
- Nicolas Pitre contributes improvements for the generic do_div()
helper
- Christoph Hellwig adds a generic version of page_to_phys() and
phys_to_page(), replacing the slightly different architecture
specific definitions.
- Uwe Kleine-Koenig has a minor cleanup for ioctl definitions"
* tag 'asm-generic-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (24 commits)
empty include/asm-generic/vga.h
sparc: get rid of asm/vga.h
asm/vga.h: don't bother with scr_mem{cpy,move}v() unless we need to
vt_buffer.h: get rid of dead code in default scr_...() instances
tty: serial: export serial_8250_warn_need_ioport
lib/iomem_copy: fix kerneldoc format style
hexagon: simplify asm/io.h for !HAS_IOPORT
loongarch: Use new fallback IO memcpy/memset
csky: Use new fallback IO memcpy/memset
arm64: Use new fallback IO memcpy/memset
New implementation for IO memcpy and IO memset
watchdog: Add HAS_IOPORT dependency for SBC8360 and SBC7240
__arch_xprod64(): make __always_inline when optimizing for performance
ARM: div64: improve __arch_xprod_64()
asm-generic/div64: optimize/simplify __div64_const32()
lib/math/test_div64: add some edge cases relevant to __div64_const32()
asm-generic: add an optional pfn_valid check to page_to_phys
asm-generic: provide generic page_to_phys and phys_to_page implementations
asm-generic/io.h: Remove I/O port accessors for HAS_IOPORT=n
tty: serial: handle HAS_IOPORT dependencies
...
|
||
|
Linus Torvalds
|
e6de688e93 |
Devicetree updates for v6.13:
Bindings:
- Enable dtc "interrupt_provider" warnings for binding examples.
Fix the warnings in fsl,mu-msi and ti,sci-inta due to this.
- Convert zii,rave-sp-wdt, zii,rave-sp-pwrbutton, and
altr,fpga-passive-serial to DT schema format
- Add some documentation on the different forms of YAML text blocks
which are a constant source of review comments
- Fix some schema errors in constraints for arrays
- Add compatibles for qcom,sar2130p-pdc and onnn,adt7462
DT core:
- Allow overlay kunit tests to run CONFIG_OF_OVERLAY=n
- Add some warnings on deprecated address handling
- Rework early_init_dt_scan() so the arch can pass in the phys address
of the DTB as __pa() is not always valid to use. This fixes a warning
for arm64 with kexec.
- Add and use some new DT graph iterators for iterating over ports and
endpoints
- Rework reserved-memory handling to be sized dynamically for fixed
regions
- Optimize of_modalias() to avoid a strlen() call
- Constify struct device_node and property pointers where ever possible
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Merge tag 'devicetree-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
"Bindings:
- Enable dtc "interrupt_provider" warnings for binding examples. Fix
the warnings in fsl,mu-msi and ti,sci-inta due to this.
- Convert zii,rave-sp-wdt, zii,rave-sp-pwrbutton, and
altr,fpga-passive-serial to DT schema format
- Add some documentation on the different forms of YAML text blocks
which are a constant source of review comments
- Fix some schema errors in constraints for arrays
- Add compatibles for qcom,sar2130p-pdc and onnn,adt7462
DT core:
- Allow overlay kunit tests to run CONFIG_OF_OVERLAY=n
- Add some warnings on deprecated address handling
- Rework early_init_dt_scan() so the arch can pass in the phys
address of the DTB as __pa() is not always valid to use. This fixes
a warning for arm64 with kexec.
- Add and use some new DT graph iterators for iterating over ports
and endpoints
- Rework reserved-memory handling to be sized dynamically for fixed
regions
- Optimize of_modalias() to avoid a strlen() call
- Constify struct device_node and property pointers where ever
possible"
* tag 'devicetree-for-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (36 commits)
of: Allow overlay kunit tests to run CONFIG_OF_OVERLAY=n
dt-bindings: interrupt-controller: qcom,pdc: Add SAR2130P compatible
of/address: Rework bus matching to avoid warnings
of: WARN on deprecated #address-cells/#size-cells handling
of/fdt: Don't use default address cell sizes for address translation
dt-bindings: Enable dtc "interrupt_provider" warnings
of/fdt: add dt_phys arg to early_init_dt_scan and early_init_dt_verify
dt-bindings: cache: qcom,llcc: Fix X1E80100 reg entries
dt-bindings: watchdog: convert zii,rave-sp-wdt.txt to yaml format
dt-bindings: input: convert zii,rave-sp-pwrbutton.txt to yaml
media: xilinx-tpg: use new of_graph functions
fbdev: omapfb: use new of_graph functions
gpu: drm: omapdrm: use new of_graph functions
ASoC: audio-graph-card2: use new of_graph functions
ASoC: audio-graph-card: use new of_graph functions
ASoC: test-component: use new of_graph functions
of: property: use new of_graph functions
of: property: add of_graph_get_next_port_endpoint()
of: property: add of_graph_get_next_port()
of: module: remove strlen() call in of_modalias()
...
|
||
|
Linus Torvalds
|
bf9aa14fc5 |
A rather large update for timekeeping and timers:
- The final step to get rid of auto-rearming posix-timers
posix-timers are currently auto-rearmed by the kernel when the signal
of the timer is ignored so that the timer signal can be delivered once
the corresponding signal is unignored.
This requires to throttle the timer to prevent a DoS by small intervals
and keeps the system pointlessly out of low power states for no value.
This is a long standing non-trivial problem due to the lock order of
posix-timer lock and the sighand lock along with life time issues as
the timer and the sigqueue have different life time rules.
Cure this by:
* Embedding the sigqueue into the timer struct to have the same life
time rules. Aside of that this also avoids the lookup of the timer
in the signal delivery and rearm path as it's just a always valid
container_of() now.
* Queuing ignored timer signals onto a seperate ignored list.
* Moving queued timer signals onto the ignored list when the signal is
switched to SIG_IGN before it could be delivered.
* Walking the ignored list when SIG_IGN is lifted and requeue the
signals to the actual signal lists. This allows the signal delivery
code to rearm the timer.
This also required to consolidate the signal delivery rules so they are
consistent across all situations. With that all self test scenarios
finally succeed.
- Core infrastructure for VFS multigrain timestamping
This is required to allow the kernel to use coarse grained time stamps
by default and switch to fine grained time stamps when inode attributes
are actively observed via getattr().
These changes have been provided to the VFS tree as well, so that the
VFS specific infrastructure could be built on top.
- Cleanup and consolidation of the sleep() infrastructure
* Move all sleep and timeout functions into one file
* Rework udelay() and ndelay() into proper documented inline functions
and replace the hardcoded magic numbers by proper defines.
* Rework the fsleep() implementation to take the reality of the timer
wheel granularity on different HZ values into account. Right now the
boundaries are hard coded time ranges which fail to provide the
requested accuracy on different HZ settings.
* Update documentation for all sleep/timeout related functions and fix
up stale documentation links all over the place
* Fixup a few usage sites
- Rework of timekeeping and adjtimex(2) to prepare for multiple PTP clocks
A system can have multiple PTP clocks which are participating in
seperate and independent PTP clock domains. So far the kernel only
considers the PTP clock which is based on CLOCK TAI relevant as that's
the clock which drives the timekeeping adjustments via the various user
space daemons through adjtimex(2).
The non TAI based clock domains are accessible via the file descriptor
based posix clocks, but their usability is very limited. They can't be
accessed fast as they always go all the way out to the hardware and
they cannot be utilized in the kernel itself.
As Time Sensitive Networking (TSN) gains traction it is required to
provide fast user and kernel space access to these clocks.
The approach taken is to utilize the timekeeping and adjtimex(2)
infrastructure to provide this access in a similar way how the kernel
provides access to clock MONOTONIC, REALTIME etc.
Instead of creating a duplicated infrastructure this rework converts
timekeeping and adjtimex(2) into generic functionality which operates
on pointers to data structures instead of using static variables.
This allows to provide time accessors and adjtimex(2) functionality for
the independent PTP clocks in a subsequent step.
- Consolidate hrtimer initialization
hrtimers are set up by initializing the data structure and then
seperately setting the callback function for historical reasons.
That's an extra unnecessary step and makes Rust support less straight
forward than it should be.
Provide a new set of hrtimer_setup*() functions and convert the core
code and a few usage sites of the less frequently used interfaces over.
The bulk of the htimer_init() to hrtimer_setup() conversion is already
prepared and scheduled for the next merge window.
- Drivers:
* Ensure that the global timekeeping clocksource is utilizing the
cluster 0 timer on MIPS multi-cluster systems.
Otherwise CPUs on different clusters use their cluster specific
clocksource which is not guaranteed to be synchronized with other
clusters.
* Mostly boring cleanups, fixes, improvements and code movement
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Merge tag 'timers-core-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"A rather large update for timekeeping and timers:
- The final step to get rid of auto-rearming posix-timers
posix-timers are currently auto-rearmed by the kernel when the
signal of the timer is ignored so that the timer signal can be
delivered once the corresponding signal is unignored.
This requires to throttle the timer to prevent a DoS by small
intervals and keeps the system pointlessly out of low power states
for no value. This is a long standing non-trivial problem due to
the lock order of posix-timer lock and the sighand lock along with
life time issues as the timer and the sigqueue have different life
time rules.
Cure this by:
- Embedding the sigqueue into the timer struct to have the same
life time rules. Aside of that this also avoids the lookup of
the timer in the signal delivery and rearm path as it's just a
always valid container_of() now.
- Queuing ignored timer signals onto a seperate ignored list.
- Moving queued timer signals onto the ignored list when the
signal is switched to SIG_IGN before it could be delivered.
- Walking the ignored list when SIG_IGN is lifted and requeue the
signals to the actual signal lists. This allows the signal
delivery code to rearm the timer.
This also required to consolidate the signal delivery rules so they
are consistent across all situations. With that all self test
scenarios finally succeed.
- Core infrastructure for VFS multigrain timestamping
This is required to allow the kernel to use coarse grained time
stamps by default and switch to fine grained time stamps when inode
attributes are actively observed via getattr().
These changes have been provided to the VFS tree as well, so that
the VFS specific infrastructure could be built on top.
- Cleanup and consolidation of the sleep() infrastructure
- Move all sleep and timeout functions into one file
- Rework udelay() and ndelay() into proper documented inline
functions and replace the hardcoded magic numbers by proper
defines.
- Rework the fsleep() implementation to take the reality of the
timer wheel granularity on different HZ values into account.
Right now the boundaries are hard coded time ranges which fail
to provide the requested accuracy on different HZ settings.
- Update documentation for all sleep/timeout related functions
and fix up stale documentation links all over the place
- Fixup a few usage sites
- Rework of timekeeping and adjtimex(2) to prepare for multiple PTP
clocks
A system can have multiple PTP clocks which are participating in
seperate and independent PTP clock domains. So far the kernel only
considers the PTP clock which is based on CLOCK TAI relevant as
that's the clock which drives the timekeeping adjustments via the
various user space daemons through adjtimex(2).
The non TAI based clock domains are accessible via the file
descriptor based posix clocks, but their usability is very limited.
They can't be accessed fast as they always go all the way out to
the hardware and they cannot be utilized in the kernel itself.
As Time Sensitive Networking (TSN) gains traction it is required to
provide fast user and kernel space access to these clocks.
The approach taken is to utilize the timekeeping and adjtimex(2)
infrastructure to provide this access in a similar way how the
kernel provides access to clock MONOTONIC, REALTIME etc.
Instead of creating a duplicated infrastructure this rework
converts timekeeping and adjtimex(2) into generic functionality
which operates on pointers to data structures instead of using
static variables.
This allows to provide time accessors and adjtimex(2) functionality
for the independent PTP clocks in a subsequent step.
- Consolidate hrtimer initialization
hrtimers are set up by initializing the data structure and then
seperately setting the callback function for historical reasons.
That's an extra unnecessary step and makes Rust support less
straight forward than it should be.
Provide a new set of hrtimer_setup*() functions and convert the
core code and a few usage sites of the less frequently used
interfaces over.
The bulk of the htimer_init() to hrtimer_setup() conversion is
already prepared and scheduled for the next merge window.
- Drivers:
- Ensure that the global timekeeping clocksource is utilizing the
cluster 0 timer on MIPS multi-cluster systems.
Otherwise CPUs on different clusters use their cluster specific
clocksource which is not guaranteed to be synchronized with
other clusters.
- Mostly boring cleanups, fixes, improvements and code movement"
* tag 'timers-core-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (140 commits)
posix-timers: Fix spurious warning on double enqueue versus do_exit()
clocksource/drivers/arm_arch_timer: Use of_property_present() for non-boolean properties
clocksource/drivers/gpx: Remove redundant casts
clocksource/drivers/timer-ti-dm: Fix child node refcount handling
dt-bindings: timer: actions,owl-timer: convert to YAML
clocksource/drivers/ralink: Add Ralink System Tick Counter driver
clocksource/drivers/mips-gic-timer: Always use cluster 0 counter as clocksource
clocksource/drivers/timer-ti-dm: Don't fail probe if int not found
clocksource/drivers:sp804: Make user selectable
clocksource/drivers/dw_apb: Remove unused dw_apb_clockevent functions
hrtimers: Delete hrtimer_init_on_stack()
alarmtimer: Switch to use hrtimer_setup() and hrtimer_setup_on_stack()
io_uring: Switch to use hrtimer_setup_on_stack()
sched/idle: Switch to use hrtimer_setup_on_stack()
hrtimers: Delete hrtimer_init_sleeper_on_stack()
wait: Switch to use hrtimer_setup_sleeper_on_stack()
timers: Switch to use hrtimer_setup_sleeper_on_stack()
net: pktgen: Switch to use hrtimer_setup_sleeper_on_stack()
futex: Switch to use hrtimer_setup_sleeper_on_stack()
fs/aio: Switch to use hrtimer_setup_sleeper_on_stack()
...
|
||
|
Linus Torvalds
|
fb1dd1403c |
A set of changes for debugobjects:
- Prevent destroying the kmem_cache on early failure.
Destroying a kmem_cache requires work queues to be set up, but in the
early failure case they are not yet initializated. So rather leak the
cache instead of triggering a BUG.
- Reduce parallel pool fill attempts.
Refilling the object pool requires to take the global pool lock, which
causes a massive performance issue when a large number of CPUs attempt
to refill concurrently. It turns out that it's sufficient to let one
CPU handle the refill from the to free list and in case there are not
enough objects on it to allocate new objects from the kmem cache.
This also splits the free list handling from the actual allocation path
as that yields better results on RT where allocation is restricted to
preemptible code paths. The refill from free list has no such
restrictions.
- Consolidate the global and the per CPU pools to use the same data
structure, so all helper functions can be shared.
- Simplify the object allocation/free logic.
The allocation/free logic is an incomprehensible maze, which tries to
utilize the to free list and the global pool in the best way. This all
can be simplified into a straight forward comprehensible code flow.
- Convert the allocation/free mechanism to batch mode.
Transferring objects from the global pool to the per CPU pools or vice
versa is done by walking the hlist and moving object by object. That
not only increases the pool lock held time, it also dirties up to 17
cache lines.
This can be avoided by storing the pointer to the first object in a
batch of 16 objects in the objects themself and propagate it through
the batch when an object is enqueued into a pool or to a temporary
hlist head on allocation.
This allows to move batches of objects with at max four cache lines
dirtied and reduces the pool lock held time and therefore contention
significantly.
- Improve the object reusage
The current implementation is too agressively freeing unused objects,
which is counterproductive on bursty workloads like a kernel compile.
Address this by:
* increasing the per CPU pool size
* refilling the per CPU pool from the to be freed pool when the per
CPU pool emptied a batch
* keeping track of object usage with a exponentially wheighted
moving average which prevents the work queue callback to free
objects prematuraly.
This combined reduces the allocation/free rate for a full kernel
compile significantly:
kmem_cache_alloc() kmem_cache_free()
Baseline: 380k 330k
Improved: 170k 117k
- A few cleanups and a more cache line friendly layout of debug
information on top.
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Merge tag 'core-debugobjects-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull debugobjects updates from Thomas Gleixner:
- Prevent destroying the kmem_cache on early failure.
Destroying a kmem_cache requires work queues to be set up, but in the
early failure case they are not yet initializated. So rather leak the
cache instead of triggering a BUG.
- Reduce parallel pool fill attempts.
Refilling the object pool requires to take the global pool lock,
which causes a massive performance issue when a large number of CPUs
attempt to refill concurrently. It turns out that it's sufficient to
let one CPU handle the refill from the to free list and in case there
are not enough objects on it to allocate new objects from the kmem
cache.
This also splits the free list handling from the actual allocation
path as that yields better results on RT where allocation is
restricted to preemptible code paths. The refill from free list has
no such restrictions.
- Consolidate the global and the per CPU pools to use the same data
structure, so all helper functions can be shared.
- Simplify the object allocation/free logic.
The allocation/free logic is an incomprehensible maze, which tries to
utilize the to free list and the global pool in the best way. This
all can be simplified into a straight forward comprehensible code
flow.
- Convert the allocation/free mechanism to batch mode.
Transferring objects from the global pool to the per CPU pools or
vice versa is done by walking the hlist and moving object by object.
That not only increases the pool lock held time, it also dirties up
to 17 cache lines.
This can be avoided by storing the pointer to the first object in a
batch of 16 objects in the objects themself and propagate it through
the batch when an object is enqueued into a pool or to a temporary
hlist head on allocation.
This allows to move batches of objects with at max four cache lines
dirtied and reduces the pool lock held time and therefore contention
significantly.
- Improve the object reusage
The current implementation is too agressively freeing unused objects,
which is counterproductive on bursty workloads like a kernel compile.
Address this by:
* increasing the per CPU pool size
* refilling the per CPU pool from the to be freed pool when the
per CPU pool emptied a batch
* keeping track of object usage with a exponentially wheighted
moving average which prevents the work queue callback to free
objects prematuraly.
This combined reduces the allocation/free rate for a full kernel
compile significantly:
kmem_cache_alloc() kmem_cache_free()
Baseline: 380k 330k
Improved: 170k 117k
- A few cleanups and a more cache line friendly layout of debug
information on top.
* tag 'core-debugobjects-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
debugobjects: Track object usage to avoid premature freeing of objects
debugobjects: Refill per CPU pool more agressively
debugobjects: Double the per CPU slots
debugobjects: Move pool statistics into global_pool struct
debugobjects: Implement batch processing
debugobjects: Prepare kmem_cache allocations for batching
debugobjects: Prepare for batching
debugobjects: Use static key for boot pool selection
debugobjects: Rework free_object_work()
debugobjects: Rework object freeing
debugobjects: Rework object allocation
debugobjects: Move min/max count into pool struct
debugobjects: Rename and tidy up per CPU pools
debugobjects: Use separate list head for boot pool
debugobjects: Move pools into a datastructure
debugobjects: Reduce parallel pool fill attempts
debugobjects: Make debug_objects_enabled bool
debugobjects: Provide and use free_object_list()
debugobjects: Remove pointless debug printk
debugobjects: Reuse put_objects() on OOM
...
|
||
|
Kuan-Wei Chiu
|
95b6d723a0 |
kunit: debugfs: Use IS_ERR() for alloc_string_stream() error check
The alloc_string_stream() function only returns ERR_PTR(-ENOMEM) on failure and never returns NULL. Therefore, switching the error check in the caller from IS_ERR_OR_NULL to IS_ERR improves clarity, indicating that this function will return an error pointer (not NULL) when an error occurs. This change avoids any ambiguity regarding the function's return behavior. Link: https://lore.kernel.org/lkml/Zy9deU5VK3YR+r9N@visitorckw-System-Product-Name Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Zichen Xie
|
435c20eed5 |
kunit: Fix potential null dereference in kunit_device_driver_test()
kunit_kzalloc() may return a NULL pointer, dereferencing it without
NULL check may lead to NULL dereference.
Add a NULL check for test_state.
Link: https://lore.kernel.org/r/20241115054335.21673-1-zichenxie0106@gmail.com
Fixes:
|
||
|
Jinjie Ruan
|
39e21403c9 |
kunit: string-stream: Fix a UAF bug in kunit_init_suite()
In kunit_debugfs_create_suite(), if alloc_string_stream() fails in the
kunit_suite_for_each_test_case() loop, the "suite->log = stream"
has assigned before, and the error path only free the suite->log's stream
memory but not set it to NULL, so the later string_stream_clear() of
suite->log in kunit_init_suite() will cause below UAF bug.
Set stream pointer to NULL after free to fix it.
Unable to handle kernel paging request at virtual address 006440150000030d
Mem abort info:
ESR = 0x0000000096000004
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x04: level 0 translation fault
Data abort info:
ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
CM = 0, WnR = 0, TnD = 0, TagAccess = 0
GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[006440150000030d] address between user and kernel address ranges
Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
Dumping ftrace buffer:
(ftrace buffer empty)
Modules linked in: iio_test_gts industrialio_gts_helper cfg80211 rfkill ipv6 [last unloaded: iio_test_gts]
CPU: 5 UID: 0 PID: 6253 Comm: modprobe Tainted: G B W N 6.12.0-rc4+ #458
Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST
Hardware name: linux,dummy-virt (DT)
pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : string_stream_clear+0x54/0x1ac
lr : string_stream_clear+0x1a8/0x1ac
sp : ffffffc080b47410
x29: ffffffc080b47410 x28: 006440550000030d x27: ffffff80c96b5e98
x26: ffffff80c96b5e80 x25: ffffffe461b3f6c0 x24: 0000000000000003
x23: ffffff80c96b5e88 x22: 1ffffff019cdf4fc x21: dfffffc000000000
x20: ffffff80ce6fa7e0 x19: 032202a80000186d x18: 0000000000001840
x17: 0000000000000000 x16: 0000000000000000 x15: ffffffe45c355cb4
x14: ffffffe45c35589c x13: ffffffe45c03da78 x12: ffffffb810168e75
x11: 1ffffff810168e74 x10: ffffffb810168e74 x9 : dfffffc000000000
x8 : 0000000000000004 x7 : 0000000000000003 x6 : 0000000000000001
x5 : ffffffc080b473a0 x4 : 0000000000000000 x3 : 0000000000000000
x2 : 0000000000000001 x1 : ffffffe462fbf620 x0 : dfffffc000000000
Call trace:
string_stream_clear+0x54/0x1ac
__kunit_test_suites_init+0x108/0x1d8
kunit_exec_run_tests+0xb8/0x100
kunit_module_notify+0x400/0x55c
notifier_call_chain+0xfc/0x3b4
blocking_notifier_call_chain+0x68/0x9c
do_init_module+0x24c/0x5c8
load_module+0x4acc/0x4e90
init_module_from_file+0xd4/0x128
idempotent_init_module+0x2d4/0x57c
__arm64_sys_finit_module+0xac/0x100
invoke_syscall+0x6c/0x258
el0_svc_common.constprop.0+0x160/0x22c
do_el0_svc+0x44/0x5c
el0_svc+0x48/0xb8
el0t_64_sync_handler+0x13c/0x158
el0t_64_sync+0x190/0x194
Code: f9400753 d2dff800 f2fbffe0 d343fe7c (38e06b80)
---[ end trace 0000000000000000 ]---
Kernel panic - not syncing: Oops: Fatal exception
Link: https://lore.kernel.org/r/20241112080314.407966-1-ruanjinjie@huawei.com
Cc: stable@vger.kernel.org
Fixes:
|
||
|
Linus Torvalds
|
364eeb79a2 |
Locking changes for v6.13 are:
- lockdep:
- Enable PROVE_RAW_LOCK_NESTING with PROVE_LOCKING (Sebastian Andrzej Siewior)
- Add lockdep_cleanup_dead_cpu() (David Woodhouse)
- futexes:
- Use atomic64_inc_return() in get_inode_sequence_number() (Uros Bizjak)
- Use atomic64_try_cmpxchg_relaxed() in get_inode_sequence_number() (Uros Bizjak)
- RT locking:
- Add sparse annotation PREEMPT_RT's locking (Sebastian Andrzej Siewior)
- spinlocks:
- Use atomic_try_cmpxchg_release() in osq_unlock() (Uros Bizjak)
- atomics:
- x86: Use ALT_OUTPUT_SP() for __alternative_atomic64() (Uros Bizjak)
- x86: Use ALT_OUTPUT_SP() for __arch_{,try_}cmpxchg64_emu() (Uros Bizjak)
- KCSAN, seqlocks:
- Support seqcount_latch_t (Marco Elver)
- <linux/cleanup.h>:
- Add if_not_cond_guard() conditional guard helper (David Lechner)
- Adjust scoped_guard() macros to avoid potential warning (Przemek Kitszel)
- Remove address space of returned pointer (Uros Bizjak)
- WW mutexes:
- locking/ww_mutex: Adjust to lockdep nest_lock requirements (Thomas Hellström)
- Rust integration:
- Fix raw_spin_lock initialization on PREEMPT_RT (Eder Zulian)
- miscellaneous cleanups & fixes:
- lockdep: Fix wait-type check related warnings (Ahmed Ehab)
- lockdep: Use info level for initial info messages (Jiri Slaby)
- spinlocks: Make __raw_* lock ops static (Geert Uytterhoeven)
- pvqspinlock: Convert fields of 'enum vcpu_state' to uppercase (Qiuxu Zhuo)
- iio: magnetometer: Fix if () scoped_guard() formatting (Stephen Rothwell)
- rtmutex: Fix misleading comment (Peter Zijlstra)
- percpu-rw-semaphores: Fix grammar in percpu-rw-semaphore.rst (Xiu Jianfeng)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Lockdep:
- Enable PROVE_RAW_LOCK_NESTING with PROVE_LOCKING (Sebastian Andrzej
Siewior)
- Add lockdep_cleanup_dead_cpu() (David Woodhouse)
futexes:
- Use atomic64_inc_return() in get_inode_sequence_number() (Uros
Bizjak)
- Use atomic64_try_cmpxchg_relaxed() in get_inode_sequence_number()
(Uros Bizjak)
RT locking:
- Add sparse annotation PREEMPT_RT's locking (Sebastian Andrzej
Siewior)
spinlocks:
- Use atomic_try_cmpxchg_release() in osq_unlock() (Uros Bizjak)
atomics:
- x86: Use ALT_OUTPUT_SP() for __alternative_atomic64() (Uros Bizjak)
- x86: Use ALT_OUTPUT_SP() for __arch_{,try_}cmpxchg64_emu() (Uros
Bizjak)
KCSAN, seqlocks:
- Support seqcount_latch_t (Marco Elver)
<linux/cleanup.h>:
- Add if_not_guard() conditional guard helper (David Lechner)
- Adjust scoped_guard() macros to avoid potential warning (Przemek
Kitszel)
- Remove address space of returned pointer (Uros Bizjak)
WW mutexes:
- locking/ww_mutex: Adjust to lockdep nest_lock requirements (Thomas
Hellström)
Rust integration:
- Fix raw_spin_lock initialization on PREEMPT_RT (Eder Zulian)
Misc cleanups & fixes:
- lockdep: Fix wait-type check related warnings (Ahmed Ehab)
- lockdep: Use info level for initial info messages (Jiri Slaby)
- spinlocks: Make __raw_* lock ops static (Geert Uytterhoeven)
- pvqspinlock: Convert fields of 'enum vcpu_state' to uppercase
(Qiuxu Zhuo)
- iio: magnetometer: Fix if () scoped_guard() formatting (Stephen
Rothwell)
- rtmutex: Fix misleading comment (Peter Zijlstra)
- percpu-rw-semaphores: Fix grammar in percpu-rw-semaphore.rst (Xiu
Jianfeng)"
* tag 'locking-core-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (29 commits)
locking/Documentation: Fix grammar in percpu-rw-semaphore.rst
iio: magnetometer: fix if () scoped_guard() formatting
rust: helpers: Avoid raw_spin_lock initialization for PREEMPT_RT
kcsan, seqlock: Fix incorrect assumption in read_seqbegin()
seqlock, treewide: Switch to non-raw seqcount_latch interface
kcsan, seqlock: Support seqcount_latch_t
time/sched_clock: Broaden sched_clock()'s instrumentation coverage
time/sched_clock: Swap update_clock_read_data() latch writes
locking/atomic/x86: Use ALT_OUTPUT_SP() for __arch_{,try_}cmpxchg64_emu()
locking/atomic/x86: Use ALT_OUTPUT_SP() for __alternative_atomic64()
cleanup: Add conditional guard helper
cleanup: Adjust scoped_guard() macros to avoid potential warning
locking/osq_lock: Use atomic_try_cmpxchg_release() in osq_unlock()
cleanup: Remove address space of returned pointer
locking/rtmutex: Fix misleading comment
locking/rt: Annotate unlock followed by lock for sparse.
locking/rt: Add sparse annotation for RCU.
locking/rt: Remove one __cond_lock() in RT's spin_trylock_irqsave()
locking/rt: Add sparse annotation PREEMPT_RT's sleeping locks.
locking/pvqspinlock: Convert fields of 'enum vcpu_state' to uppercase
...
|
||
|
Linus Torvalds
|
8a7fa81137 |
Random number generator updates for Linux 6.13-rc1.
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||
|
Linus Torvalds
|
02b2f1a7b8 |
This update includes the following changes:
API:
- Add sig driver API.
- Remove signing/verification from akcipher API.
- Move crypto_simd_disabled_for_test to lib/crypto.
- Add WARN_ON for return values from driver that indicates memory corruption.
Algorithms:
- Provide crc32-arch and crc32c-arch through Crypto API.
- Optimise crc32c code size on x86.
- Optimise crct10dif on arm/arm64.
- Optimise p10-aes-gcm on powerpc.
- Optimise aegis128 on x86.
- Output full sample from test interface in jitter RNG.
- Retry without padata when it fails in pcrypt.
Drivers:
- Add support for Airoha EN7581 TRNG.
- Add support for STM32MP25x platforms in stm32.
- Enable iproc-r200 RNG driver on BCMBCA.
- Add Broadcom BCM74110 RNG driver.
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Merge tag 'v6.13-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"API:
- Add sig driver API
- Remove signing/verification from akcipher API
- Move crypto_simd_disabled_for_test to lib/crypto
- Add WARN_ON for return values from driver that indicates memory
corruption
Algorithms:
- Provide crc32-arch and crc32c-arch through Crypto API
- Optimise crc32c code size on x86
- Optimise crct10dif on arm/arm64
- Optimise p10-aes-gcm on powerpc
- Optimise aegis128 on x86
- Output full sample from test interface in jitter RNG
- Retry without padata when it fails in pcrypt
Drivers:
- Add support for Airoha EN7581 TRNG
- Add support for STM32MP25x platforms in stm32
- Enable iproc-r200 RNG driver on BCMBCA
- Add Broadcom BCM74110 RNG driver"
* tag 'v6.13-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (112 commits)
crypto: marvell/cesa - fix uninit value for struct mv_cesa_op_ctx
crypto: cavium - Fix an error handling path in cpt_ucode_load_fw()
crypto: aesni - Move back to module_init
crypto: lib/mpi - Export mpi_set_bit
crypto: aes-gcm-p10 - Use the correct bit to test for P10
hwrng: amd - remove reference to removed PPC_MAPLE config
crypto: arm/crct10dif - Implement plain NEON variant
crypto: arm/crct10dif - Macroify PMULL asm code
crypto: arm/crct10dif - Use existing mov_l macro instead of __adrl
crypto: arm64/crct10dif - Remove remaining 64x64 PMULL fallback code
crypto: arm64/crct10dif - Use faster 16x64 bit polynomial multiply
crypto: arm64/crct10dif - Remove obsolete chunking logic
crypto: bcm - add error check in the ahash_hmac_init function
crypto: caam - add error check to caam_rsa_set_priv_key_form
hwrng: bcm74110 - Add Broadcom BCM74110 RNG driver
dt-bindings: rng: add binding for BCM74110 RNG
padata: Clean up in padata_do_multithreaded()
crypto: inside-secure - Fix the return value of safexcel_xcbcmac_cra_init()
crypto: qat - Fix missing destroy_workqueue in adf_init_aer()
crypto: rsassa-pkcs1 - Reinstate support for legacy protocols
...
|
||
|
Jan Hendrik Farr
|
f06e108a3d |
Compiler Attributes: disable __counted_by for clang < 19.1.3
This patch disables __counted_by for clang versions < 19.1.3 because
of the two issues listed below. It does this by introducing
CONFIG_CC_HAS_COUNTED_BY.
1. clang < 19.1.2 has a bug that can lead to __bdos returning 0:
https://github.com/llvm/llvm-project/pull/110497
2. clang < 19.1.3 has a bug that can lead to __bdos being off by 4:
https://github.com/llvm/llvm-project/pull/112636
Fixes:
|
||
|
Linus Torvalds
|
0338cd9c22 |
s390 updates for 6.13 merge window
- Add firmware sysfs interface which allows user space to retrieve the dump
area size of the machine
- Add 'measurement_chars_full' CHPID sysfs attribute to make the complete
associated Channel-Measurements Characteristics Block available
- Add virtio-mem support
- Move gmap aka KVM page fault handling from the main fault handler to KVM
code. This is the first step to make s390 KVM page fault handling similar
to other architectures. With this first step the main fault handler does
not have any special handling anymore, and therefore convert it to
support LOCK_MM_AND_FIND_VMA
- With gcc 14 s390 support for flag output operand support for inline
assemblies was added. This allows for several optimizations
- Provide a cmpxchg inline assembly which makes use of this, and provide
all variants of arch_try_cmpxchg() so that the compiler can generate
slightly better code
- Convert a few cmpxchg() loops to try_cmpxchg() loops
- Similar to x86 add a CC_OUT() helper macro (and other macros), and
convert all inline assemblies to make use of them, so that depending on
compiler version better code can be generated
- List installed host-key hashes in sysfs if the machine supports the Query
Ultravisor Keys UVC
- Add 'Retrieve Secret' ioctl which allows user space in protected
execution guests to retrieve previously stored secrets from the
Ultravisor
- Add pkey-uv module which supports the conversion of Ultravisor
retrievable secrets to protected keys
- Extend the existing paes cipher to exploit the full AES-XTS hardware
acceleration introduced with message-security assist extension 10
- Convert hopefully all sysfs show functions to use sysfs_emit() so that
the constant flow of such patches stop
- For PCI devices make use of the newly added Topology ID attribute to
enable whole card multi-function support despite the change to PCHID per
port. Additionally improve the overall robustness and usability of
the multifunction support
- Various other small improvements, fixes, and cleanups
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Merge tag 's390-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Heiko Carstens:
- Add firmware sysfs interface which allows user space to retrieve the
dump area size of the machine
- Add 'measurement_chars_full' CHPID sysfs attribute to make the
complete associated Channel-Measurements Characteristics Block
available
- Add virtio-mem support
- Move gmap aka KVM page fault handling from the main fault handler to
KVM code. This is the first step to make s390 KVM page fault handling
similar to other architectures. With this first step the main fault
handler does not have any special handling anymore, and therefore
convert it to support LOCK_MM_AND_FIND_VMA
- With gcc 14 s390 support for flag output operand support for inline
assemblies was added. This allows for several optimizations:
- Provide a cmpxchg inline assembly which makes use of this, and
provide all variants of arch_try_cmpxchg() so that the compiler
can generate slightly better code
- Convert a few cmpxchg() loops to try_cmpxchg() loops
- Similar to x86 add a CC_OUT() helper macro (and other macros),
and convert all inline assemblies to make use of them, so that
depending on compiler version better code can be generated
- List installed host-key hashes in sysfs if the machine supports the
Query Ultravisor Keys UVC
- Add 'Retrieve Secret' ioctl which allows user space in protected
execution guests to retrieve previously stored secrets from the
Ultravisor
- Add pkey-uv module which supports the conversion of Ultravisor
retrievable secrets to protected keys
- Extend the existing paes cipher to exploit the full AES-XTS hardware
acceleration introduced with message-security assist extension 10
- Convert hopefully all sysfs show functions to use sysfs_emit() so
that the constant flow of such patches stop
- For PCI devices make use of the newly added Topology ID attribute to
enable whole card multi-function support despite the change to PCHID
per port. Additionally improve the overall robustness and usability
of the multifunction support
- Various other small improvements, fixes, and cleanups
* tag 's390-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (133 commits)
s390/cio/ioasm: Convert to use flag output macros
s390/cio/qdio: Convert to use flag output macros
s390/sclp: Convert to use flag output macros
s390/dasd: Convert to use flag output macros
s390/boot/physmem: Convert to use flag output macros
s390/pci: Convert to use flag output macros
s390/kvm: Convert to use flag output macros
s390/extmem: Convert to use flag output macros
s390/string: Convert to use flag output macros
s390/diag: Convert to use flag output macros
s390/irq: Convert to use flag output macros
s390/smp: Convert to use flag output macros
s390/uv: Convert to use flag output macros
s390/pai: Convert to use flag output macros
s390/mm: Convert to use flag output macros
s390/cpu_mf: Convert to use flag output macros
s390/cpcmd: Convert to use flag output macros
s390/topology: Convert to use flag output macros
s390/time: Convert to use flag output macros
s390/pageattr: Convert to use flag output macros
...
|
||
|
Linus Torvalds
|
77a0cfafa9 |
for-6.13/block-20241118
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Merge tag 'for-6.13/block-20241118' of git://git.kernel.dk/linux
Pull block updates from Jens Axboe:
- NVMe updates via Keith:
- Use uring_cmd helper (Pavel)
- Host Memory Buffer allocation enhancements (Christoph)
- Target persistent reservation support (Guixin)
- Persistent reservation tracing (Guixen)
- NVMe 2.1 specification support (Keith)
- Rotational Meta Support (Matias, Wang, Keith)
- Volatile cache detection enhancment (Guixen)
- MD updates via Song:
- Maintainers update
- raid5 sync IO fix
- Enhance handling of faulty and blocked devices
- raid5-ppl atomic improvement
- md-bitmap fix
- Support for manually defining embedded partition tables
- Zone append fixes and cleanups
- Stop sending the queued requests in the plug list to the driver
->queue_rqs() handle in reverse order.
- Zoned write plug cleanups
- Cleanups disk stats tracking and add support for disk stats for
passthrough IO
- Add preparatory support for file system atomic writes
- Add lockdep support for queue freezing. Already found a bunch of
issues, and some fixes for that are in here. More will be coming.
- Fix race between queue stopping/quiescing and IO queueing
- ublk recovery improvements
- Fix ublk mmap for 64k pages
- Various fixes and cleanups
* tag 'for-6.13/block-20241118' of git://git.kernel.dk/linux: (118 commits)
MAINTAINERS: Update git tree for mdraid subsystem
block: make struct rq_list available for !CONFIG_BLOCK
block/genhd: use seq_put_decimal_ull for diskstats decimal values
block: don't reorder requests in blk_mq_add_to_batch
block: don't reorder requests in blk_add_rq_to_plug
block: add a rq_list type
block: remove rq_list_move
virtio_blk: reverse request order in virtio_queue_rqs
nvme-pci: reverse request order in nvme_queue_rqs
btrfs: validate queue limits
block: export blk_validate_limits
nvmet: add tracing of reservation commands
nvme: parse reservation commands's action and rtype to string
nvmet: report ns's vwc not present
md/raid5: Increase r5conf.cache_name size
block: remove the ioprio field from struct request
block: remove the write_hint field from struct request
nvme: check ns's volatile write cache not present
nvme: add rotational support
nvme: use command set independent id ns if available
...
|
||
|
Feng Tang
|
080c8579c3 |
mm/slub, kunit: Add testcase for krealloc redzone and zeroing
Danilo Krummrich raised issue about krealloc+GFP_ZERO [1], and Vlastimil suggested to add some test case which can sanity test the kmalloc-redzone and zeroing by utilizing the kmalloc's 'orig_size' debug feature. It covers the grow and shrink case of krealloc() re-using current kmalloc object, and the case of re-allocating a new bigger object. [1]. https://lore.kernel.org/lkml/20240812223707.32049-1-dakr@kernel.org/ Suggested-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Vlastimil Babka <vbabka@suse.cz> |
||
|
Herbert Xu
|
0594ad6184 |
crypto: lib/mpi - Export mpi_set_bit
This function is part of the exposed API and should be exported. Otherwise a modular user would fail to build, e.g., crypto/rsa. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Jakub Kicinski
|
a79993b5fc |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.12-rc8). Conflicts: tools/testing/selftests/net/.gitignore |
||
|
Breno Leitao
|
12079a59ce |
net: Implement fault injection forcing skb reallocation
Introduce a fault injection mechanism to force skb reallocation. The primary goal is to catch bugs related to pointer invalidation after potential skb reallocation. The fault injection mechanism aims to identify scenarios where callers retain pointers to various headers in the skb but fail to reload these pointers after calling a function that may reallocate the data. This type of bug can lead to memory corruption or crashes if the old, now-invalid pointers are used. By forcing reallocation through fault injection, we can stress-test code paths and ensure proper pointer management after potential skb reallocations. Add a hook for fault injection in the following functions: * pskb_trim_rcsum() * pskb_may_pull_reason() * pskb_trim() As the other fault injection mechanism, protect it under a debug Kconfig called CONFIG_FAIL_SKB_REALLOC. This patch was *heavily* inspired by Jakub's proposal from: https://lore.kernel.org/all/20240719174140.47a868e6@kernel.org/ CC: Akinobu Mita <akinobu.mita@gmail.com> Suggested-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Breno Leitao <leitao@debian.org> Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Guillaume Nault <gnault@redhat.com> Link: https://patch.msgid.link/20241107-fault_v6-v6-1-1b82cb6ecacd@debian.org Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
|
Alexandru Ardelean
|
111314157f |
lib: util_macros_kunit: add kunit test for util_macros.h
A bug was found in the find_closest() (find_closest_descending() is also
affected after some testing), where for certain values with small
progressions of 1, 2 & 3, the rounding (done by averaging 2 values) causes
an incorrect index to be returned.
The bug is described in more detail in the commit which fixes the bug.
This commit adds a kunit test to validate that the fix works correctly.
This kunit test adds some of the arrays (from the driver-sphere) that seem
to produce issues with the 'find_closest()' macro. Specifically the one
from ad7606 driver (with which the bug was found) and from the ina2xx
drivers, which shows the quirk with 'find_closest()' with elements in a
array that have an interval of 3.
For the find_closest_descending() tests, the same arrays are used as for
the find_closest(), but in reverse; the idea is that
'find_closest_descending()' should return the sames indices as
'find_closest()' but in reverse.
For testing both macros, there are 4 special arrays created, one for
testing find_closest{_descending}() for arrays of progressions 1, 2, 3 and
4. The idea is to show that (for progressions of 1, 2 & 3) the fix works
as expected. When removing the fix, the issues should start to show up.
Then an extra array of negative and positive values is added. There are
currently no such arrays within drivers, but one could expect that these
macros behave correctly even for such arrays.
To run this kunit:
./tools/testing/kunit/kunit.py run "*util_macros*"
Link: https://lkml.kernel.org/r/20241105145406.554365-2-aardelean@baylibre.com
Signed-off-by: Alexandru Ardelean <aardelean@baylibre.com>
Cc: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Wei Yang
|
431e106019 |
maple_tree: add a test checking storing null
Add a test to assert that, when storing null to am empty tree or a single entry tree it will not result into: * a root node with range [0, ULONG_MAX] set to NULL * a root node with consecutive slot set to NULL [akpm@linux-foundation.org: work around build error (mas_root)] Link: https://lkml.kernel.org/r/20241031231627.14316-6-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
0ea120b278 |
maple_tree: refine mas_store_root() on storing NULL
Currently, when storing NULL on mas_store_root(), the behavior could be
improved.
Storing NULLs over the entire tree may result in a node being used to
store a single range. Further stores of NULL may cause the node and
tree to be corrupt and cause incorrect behaviour. Fixing the store to
the root null fixes the issue by ensuring that a range of 0 - ULONG_MAX
results in an empty tree.
Users of the tree may experience incorrect values returned if the tree
was expanded to store values, then overwritten by all NULLS, then
continued to store NULLs over the empty area.
For example possible cases are:
* store NULL at any range result a new node
* store NULL at range [m, n] where m > 0 to a single entry tree result
a new node with range [m, n] set to NULL
* store NULL at range [m, n] where m > 0 to an empty tree result
consecutive NULL slot
* it allows for multiple NULL entries by expanding root
to store NULLs to an empty tree
This patch tries to improve in:
* memory efficient by setting to empty tree instead of using a node
* remove the possibility of consecutive NULL slot which will prohibit
extended null in later operation
Link: https://lkml.kernel.org/r/20241031231627.14316-5-richard.weiyang@gmail.com
Fixes:
|
||
|
Wei Yang
|
8c836f1712 |
maple_tree: not necessary to check index/last again
Before calling mas_new_root(), the range has been checked. Link: https://lkml.kernel.org/r/20241031231627.14316-4-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
cefbcf206f |
maple_tree: the return value of mas_root_expand() is not used
No user of the return value now, just remove it. Link: https://lkml.kernel.org/r/20241031231627.14316-3-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
04dafdd208 |
maple_tree: print empty for an empty tree on mt_dump()
Patch series "refine storing null", v5. When overwriting the whole range with NULL, current behavior is not correct. An empty tree is represented by having the tree point to NULL directly. An empty tree indicates the entire range (0-ULONG_MAX) is NULL. A store operation into an existing node that causes 0 - ULONG_MAX to be equal to NULL may not be restored to an empty state - a node is used to store the single range instead. This is wasteful and different from the initial setup of the tree. Once the tree is using a single node to store 0 - ULONG_MAX, problems may arise when storing more values into a tree with the unexpected state of 0 - ULONG being a single range in a node. User visible issues may mean a corrupt tree and incorrect storage of information within the tree. This would be limited to users who create and then empty a tree by overwriting all values, then try to store more NULLs into the empty tree. I cannot come up with an example of any user doing this (users usually destroy the tree and generally don't keep trying to store NULLs over NULLs), but patch 4/5 "maple_tree: refine mas_store_root() on storing NULL" should be backported just in case. This patch (of 5): Currently for an empty tree, it would print: maple_tree(0x7ffcd02c6ee0) flags 1, height 0 root (nil) 0: (nil) This is a little misleading. Let's print (empty) for an empty tree. Link: https://lkml.kernel.org/r/20241031231627.14316-1-richard.weiyang@gmail.com Link: https://lkml.kernel.org/r/20241031231627.14316-2-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sabyrzhan Tasbolatov
|
4e4d9c72c9 |
kasan: delete CONFIG_KASAN_MODULE_TEST
Since we've migrated all tests to the KUnit framework, we can delete CONFIG_KASAN_MODULE_TEST and mentioning of it in the documentation as well. I've used the online translator to modify the non-English documentation. [snovitoll@gmail.com: fix indentation in translation] Link: https://lkml.kernel.org/r/20241020042813.3223449-1-snovitoll@gmail.com Link: https://lkml.kernel.org/r/20241016131802.3115788-4-snovitoll@gmail.com Signed-off-by: Sabyrzhan Tasbolatov <snovitoll@gmail.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Alex Shi <alexs@kernel.org> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Hu Haowen <2023002089@link.tyut.edu.cn> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Marco Elver <elver@google.com> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Cc: Yanteng Si <siyanteng@loongson.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sabyrzhan Tasbolatov
|
ae193dd793 |
kasan: move checks to do_strncpy_from_user
Patch series "kasan: migrate the last module test to kunit", v4.
copy_user_test() is the last KUnit-incompatible test with
CONFIG_KASAN_MODULE_TEST requirement, which we are going to migrate to
KUnit framework and delete the former test and Kconfig as well.
In this patch series:
- [1/3] move kasan_check_write() and check_object_size() to
do_strncpy_from_user() to cover with KASAN checks with
multiple conditions in strncpy_from_user().
- [2/3] migrated copy_user_test() to KUnit, where we can also test
strncpy_from_user() due to [1/4].
KUnits have been tested on:
- x86_64 with CONFIG_KASAN_GENERIC. Passed
- arm64 with CONFIG_KASAN_SW_TAGS. 1 fail. See [1]
- arm64 with CONFIG_KASAN_HW_TAGS. 1 fail. See [1]
[1] https://lore.kernel.org/linux-mm/CACzwLxj21h7nCcS2-KA_q7ybe+5pxH0uCDwu64q_9pPsydneWQ@mail.gmail.com/
- [3/3] delete CONFIG_KASAN_MODULE_TEST and documentation occurrences.
This patch (of 3):
Since in the commit 2865baf54077("x86: support user address masking
instead of non-speculative conditional") do_strncpy_from_user() is called
from multiple places, we should sanitize the kernel *dst memory and size
which were done in strncpy_from_user() previously.
Link: https://lkml.kernel.org/r/20241016131802.3115788-1-snovitoll@gmail.com
Link: https://lkml.kernel.org/r/20241016131802.3115788-2-snovitoll@gmail.com
Fixes:
|
||
|
Andrew Morton
|
2ec0859039 |
Merge branch 'mm-hotfixes-stable' into mm-stable
Pick up
|
||
|
Luis Chamberlain
|
2466b31201 |
tests/module/gen_test_kallsyms.sh: use 0 value for variables
Use 0 for the values as we use them for the return value on init to keep the test modules simple. This fixes a splat reported do_init_module: 'test_kallsyms_b'->init suspiciously returned 255, it should follow 0/-E convention do_init_module: loading module anyway... CPU: 5 UID: 0 PID: 1873 Comm: modprobe Not tainted 6.12.0-rc3+ #4 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 2024.08-1 09/18/2024 Call Trace: <TASK> dump_stack_lvl+0x56/0x80 do_init_module.cold+0x21/0x26 init_module_from_file+0x88/0xf0 idempotent_init_module+0x108/0x300 __x64_sys_finit_module+0x5a/0xb0 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f4f3a718839 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff> RSP: 002b:00007fff97d1a9e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 000055b94001ab90 RCX: 00007f4f3a718839 RDX: 0000000000000000 RSI: 000055b910e68a10 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00007f4f3a7f1b20 R09: 000055b94001c5b0 R10: 0000000000000040 R11: 0000000000000246 R12: 000055b910e68a10 R13: 0000000000040000 R14: 000055b94001ad60 R15: 0000000000000000 </TASK> do_init_module: 'test_kallsyms_b'->init suspiciously returned 255, it should follow 0/-E convention do_init_module: loading module anyway... CPU: 1 UID: 0 PID: 1884 Comm: modprobe Not tainted 6.12.0-rc3+ #4 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 2024.08-1 09/18/2024 Call Trace: <TASK> dump_stack_lvl+0x56/0x80 do_init_module.cold+0x21/0x26 init_module_from_file+0x88/0xf0 idempotent_init_module+0x108/0x300 __x64_sys_finit_module+0x5a/0xb0 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7ffaa5d18839 Reported-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
||
|
Suren Baghdasaryan
|
b7fc16a16b |
mm/codetag: uninline and move pgalloc_tag_copy and pgalloc_tag_split
pgalloc_tag_copy() and pgalloc_tag_split() are sizable and outside of any performance-critical paths, so it should be fine to uninline them. Also move their declarations into pgalloc_tag.h which seems like a more appropriate place for them. No functional changes other than uninlining. Link: https://lkml.kernel.org/r/20241024162318.1640781-1-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Yu Zhao <yuzhao@google.com> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Sourav Panda <souravpanda@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
4835f747d3 |
alloc_tag: support for page allocation tag compression
Implement support for storing page allocation tag references directly in the page flags instead of page extensions. sysctl.vm.mem_profiling boot parameter it extended to provide a way for a user to request this mode. Enabling compression eliminates memory overhead caused by page_ext and results in better performance for page allocations. However this mode will not work if the number of available page flag bits is insufficient to address all kernel allocations. Such condition can happen during boot or when loading a module. If this condition is detected, memory allocation profiling gets disabled with an appropriate warning. By default compression mode is disabled. Link: https://lkml.kernel.org/r/20241023170759.999909-7-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov (AMD) <bp@alien8.de> Cc: Christoph Hellwig <hch@infradead.org> Cc: Daniel Gomez <da.gomez@samsung.com> Cc: David Hildenbrand <david@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: David Rientjes <rientjes@google.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Minchan Kim <minchan@google.com> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Petr Pavlu <petr.pavlu@suse.com> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Sami Tolvanen <samitolvanen@google.com> Cc: Sourav Panda <souravpanda@google.com> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Huth <thuth@redhat.com> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Xiongwei Song <xiongwei.song@windriver.com> Cc: Yu Zhao <yuzhao@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
0f9b685626 |
alloc_tag: populate memory for module tags as needed
The memory reserved for module tags does not need to be backed by physical pages until there are tags to store there. Change the way we reserve this memory to allocate only virtual area for the tags and populate it with physical pages as needed when we load a module. [surenb@google.com: avoid execmem_vmap() when !MMU] Link: https://lkml.kernel.org/r/20241031233611.3833002-1-surenb@google.com Link: https://lkml.kernel.org/r/20241023170759.999909-5-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov (AMD) <bp@alien8.de> Cc: Christoph Hellwig <hch@infradead.org> Cc: Daniel Gomez <da.gomez@samsung.com> Cc: David Hildenbrand <david@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: David Rientjes <rientjes@google.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Minchan Kim <minchan@google.com> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Petr Pavlu <petr.pavlu@suse.com> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Sami Tolvanen <samitolvanen@google.com> Cc: Sourav Panda <souravpanda@google.com> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Huth <thuth@redhat.com> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Xiongwei Song <xiongwei.song@windriver.com> Cc: Yu Zhao <yuzhao@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
0db6f8d782 |
alloc_tag: load module tags into separate contiguous memory
When a module gets unloaded there is a possibility that some of the allocations it made are still used and therefore the allocation tags corresponding to these allocations are still referenced. As such, the memory for these tags can't be freed. This is currently handled as an abnormal situation and module's data section is not being unloaded. To handle this situation without keeping module's data in memory, allow codetags with longer lifespan than the module to be loaded into their own separate memory. The in-use memory areas and gaps after module unloading in this separate memory are tracked using maple trees. Allocation tags arrange their separate memory so that it is virtually contiguous and that will allow simple allocation tag indexing later on in this patchset. The size of this virtually contiguous memory is set to store up to 100000 allocation tags. [surenb@google.com: fix empty codetag module section handling] Link: https://lkml.kernel.org/r/20241101000017.3856204-1-surenb@google.com [akpm@linux-foundation.org: update comment, per Dan] Link: https://lkml.kernel.org/r/20241023170759.999909-4-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov (AMD) <bp@alien8.de> Cc: Christoph Hellwig <hch@infradead.org> Cc: Daniel Gomez <da.gomez@samsung.com> Cc: David Hildenbrand <david@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: David Rientjes <rientjes@google.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Minchan Kim <minchan@google.com> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Petr Pavlu <petr.pavlu@suse.com> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Sami Tolvanen <samitolvanen@google.com> Cc: Sourav Panda <souravpanda@google.com> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Huth <thuth@redhat.com> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Xiongwei Song <xiongwei.song@windriver.com> Cc: Yu Zhao <yuzhao@google.com> Cc: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
3e09c500bb |
alloc_tag: introduce shutdown_mem_profiling helper function
Implement a helper function to disable memory allocation profiling and use it when creation of /proc/allocinfo fails. Ensure /proc/allocinfo does not get created when memory allocation profiling is disabled. Link: https://lkml.kernel.org/r/20241023170759.999909-3-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov (AMD) <bp@alien8.de> Cc: Christoph Hellwig <hch@infradead.org> Cc: Daniel Gomez <da.gomez@samsung.com> Cc: David Hildenbrand <david@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: David Rientjes <rientjes@google.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Minchan Kim <minchan@google.com> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Petr Pavlu <petr.pavlu@suse.com> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Sami Tolvanen <samitolvanen@google.com> Cc: Sourav Panda <souravpanda@google.com> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Huth <thuth@redhat.com> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Xiongwei Song <xiongwei.song@windriver.com> Cc: Yu Zhao <yuzhao@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Masami Hiramatsu (Google)
|
cb6fcef8b4 |
objpool: fix to make percpu slot allocation more robust
Since gfp & GFP_ATOMIC == GFP_ATOMIC is true for GFP_KERNEL | GFP_HIGH, it
will use kmalloc if user specifies that combination. Here the reason why
combining the __vmalloc_node() and kmalloc_node() is that the vmalloc does
not support all GFP flag, especially GFP_ATOMIC. So we should check if
gfp & (GFP_ATOMIC | GFP_KERNEL) != GFP_ATOMIC for vmalloc first. This
ensures caller can sleep. And for the robustness, even if vmalloc fails,
it should retry with kmalloc to allocate it.
Link: https://lkml.kernel.org/r/173008598713.1262174.2959179484209897252.stgit@mhiramat.roam.corp.google.com
Fixes:
|
||
|
Jakub Kicinski
|
2696e451df |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.12-rc7). Conflicts: drivers/net/ethernet/freescale/enetc/enetc_pf.c |
||
|
David Hildenbrand
|
2b37c814aa |
lib/Kconfig.debug: Default STRICT_DEVMEM to "y" on s390
virtio-mem currently depends on !DEVMEM | STRICT_DEVMEM. Let's default STRICT_DEVMEM to "y" just like we do for arm64 and x86. There could be ways in the future to filter access to virtio-mem device memory even without STRICT_DEVMEM, but for now let's just keep it simple. Tested-by: Mario Casquero <mcasquer@redhat.com> Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: David Hildenbrand <david@redhat.com> Tested-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Acked-by: Christian Borntraeger <borntraeger@linux.ibm.com> Link: https://lore.kernel.org/r/20241025141453.1210600-6-david@redhat.com Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
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Wei Yang
|
38dc8f4952 |
maple_tree: remove sanity check from mas_wr_slot_store()
After commit
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Wei Yang
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61e9df7085 |
maple_tree: calculate new_end when needed
Patch series "Following cleanup after introduce mas_wr_store_type()", v2. Patch 1 postpone new_end calculation when needed. Patch 2 removes a unnecessary sanity check in mas_wr_slot_store(). This patch (of 2): For wr_exact_fit/wr_new_root, we don't need to calculate new_end. Let's postpone it until necessary. Link: https://lkml.kernel.org/r/20241017015809.23392-1-richard.weiyang@gmail.com Link: https://lkml.kernel.org/r/20241017015809.23392-2-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andy Shevchenko
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4a7bba1df0 |
percpu: add a test case for the specific 64-bit value addition
It might be a corner case when we add UINT_MAX as 64-bit unsigned value to the percpu variable as it's not the same as -1 (ULONG_LONG_MAX). Add a test case for that. Link: https://lkml.kernel.org/r/20241016182635.1156168-3-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Borislav Petkov (AMD) <bp@alien8.de> Cc: Christoph Lameter <cl@linux.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Uros Bizjak <ubizjak@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Wei Yang
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908378a30b |
maple_tree: simplify mas_push_node()
When count is not 0, we know head is valid. So we can put the assignment in if (count) instead of checking the head pointer again. Also count represents current total, we can assign the new total by increasing the count by one. Link: https://lkml.kernel.org/r/20241015120746.15850-4-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Wei Yang
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4223dd93bf |
maple_tree: total is not changed for nomem_one case
If it jumps to nomem_one, the total allocated number is not changed. So we don't need to adjust it. For the nomem_bulk case, we know there is a valid mas->alloc. So we don't need to do the check. Link: https://lkml.kernel.org/r/20241015120746.15850-3-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Wei Yang
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e852cb1d00 |
maple_tree: clear request_count for new allocated one
Patch series "maple_tree: simplify mas_push_node()", v2. When count is not 0, we know head is valid. So we can put the assignment in if (count) instead of checking the head pointer again. Also count represents current total, we can assign the new total by increasing the count by one. This patch (of 3): If this is not a new allocated one, the request_count has already been cleared in mas_set_alloc_req(). Link: https://lkml.kernel.org/r/20241015120746.15850-1-richard.weiyang@gmail.com Link: https://lkml.kernel.org/r/20241015120746.15850-2-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Wei Yang
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0cc8d68abe |
maple_tree: root node could be handled by !p_slot too
For a root node, mte_parent_slot() return 0, this exactly fits the following !p_slot check. So we can remove the special handling for root node. Link: https://lkml.kernel.org/r/20240913063128.27391-1-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Jiazi Li
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5b2100f723 |
maple_tree: fix alloc node fail issue
In the following code, the second call to the mas_node_count will return
-ENOMEM:
mas_node_count(mas, MAPLE_ALLOC_SLOTS + 1);
mas_node_count(mas, MAPLE_ALLOC_SLOTS * 2 + 2);
This is because there may be some full maple_alloc node in current maple
state. Use full maple_alloc node will make max_req equal to 0. And it
leads to mt_alloc_bulk return 0. As a result, mas_node_count set mas.node
to MA_ERROR(-ENOMEM).
Find a non-full maple_alloc node, and if necessary, use this non-full node
in the next while loop.
Link: https://lkml.kernel.org/r/20240626160631.3636515-1-Liam.Howlett@oracle.com
Fixes:
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Sidhartha Kumar
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f0c99037a0 |
maple_tree: refactor mas_wr_store_type()
In mas_wr_store_type(), we check if new_end < mt_slots[wr_mas->type]. If this check fails, we know that ,after this, new_end is >= mt_min_slots. Checking this again when we detect a wr_node_store later in the function is reduntant. Because this check is part of an OR statement, the statement will always evaluate to true, therefore we can just get rid of it. We also refactor mas_wr_store_type() to return the store type rather than set it directly as it greatly cleans up the function. Link: https://lkml.kernel.org/r/20241011214451.7286-2-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha <sidhartha.kumar@oracle.com> Suggested-by: Liam Howlett <liam.howlett@oracle.com> Suggested-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam Howlett <liam.howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lorenzo Stoakes
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b314e21596 |
maple_tree: do not hash pointers on dump in debug mode
Many maple tree values output when an mt_validate() or equivalent hits an issue utilise tagged pointers, most notably parent nodes. Also some pivots/slots contain meaningful values, output as pointers, such as the index of the last entry with data for example. All pointer values such as this are destroyed by kernel pointer hashing rendering the debug output obtained from CONFIG_DEBUG_VM_MAPLE_TREE considerably less usable. Update this code to output the raw pointers using %px rather than %p when CONFIG_DEBUG_VM_MAPLE_TREE is defined. This is justified, as the use of this configuration flag indicates that this is a test environment. Userland does not understand %px, so use %p there. In an abundance of caution, if CONFIG_DEBUG_VM_MAPLE_TREE is not set, also use %p to avoid exposing raw kernel pointers except when we are positive a testing mode is enabled. This was inspired by the investigation performed in recent debugging efforts around a maple tree regression [0] where kernel pointer tagging had to be disabled in order to obtain truly meaningful and useful data. [0]:https://lore.kernel.org/all/20241001023402.3374-1-spasswolf@web.de/ Link: https://lkml.kernel.org/r/20241007115335.90104-1-lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Sui Jingfeng
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e01caa2b63 |
lib/scatterlist: use sg_phys() helper
This shorten the length of code in horizential direction, therefore is easier to read. Link: https://lkml.kernel.org/r/20241028182920.1025819-1-sui.jingfeng@linux.dev Signed-off-by: Sui Jingfeng <sui.jingfeng@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Kuan-Wei Chiu
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d559bb2c6d |
lib/test_min_heap: update min_heap_callbacks to use default builtin swap
Replace the swp function pointer in the min_heap_callbacks of test_min_heap with NULL, allowing direct usage of the default builtin swap implementation. This modification simplifies the code and improves performance by removing unnecessary function indirection. Link: https://lkml.kernel.org/r/20241020040200.939973-5-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Cc: Coly Li <colyli@suse.de> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: "Liang, Kan" <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Sakai <msakai@redhat.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Kuan-Wei Chiu
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92a8b224b8 |
lib/min_heap: introduce non-inline versions of min heap API functions
Patch series "Enhance min heap API with non-inline functions and optimizations", v2. Add non-inline versions of the min heap API functions in lib/min_heap.c and updates all users outside of kernel/events/core.c to use these non-inline versions. To mitigate the performance impact of indirect function calls caused by the non-inline versions of the swap and compare functions, a builtin swap has been introduced that swaps elements based on their size. Additionally, it micro-optimizes the efficiency of the min heap by pre-scaling the counter, following the same approach as in lib/sort.c. Documentation for the min heap API has also been added to the core-api section. This patch (of 10): All current min heap API functions are marked with '__always_inline'. However, as the number of users increases, inlining these functions everywhere leads to a increase in kernel size. In performance-critical paths, such as when perf events are enabled and min heap functions are called on every context switch, it is important to retain the inline versions for optimal performance. To balance this, the original inline functions are kept, and additional non-inline versions of the functions have been added in lib/min_heap.c. Link: https://lkml.kernel.org/r/20241020040200.939973-1-visitorckw@gmail.com Link: https://lore.kernel.org/20240522161048.8d8bbc7b153b4ecd92c50666@linux-foundation.org Link: https://lkml.kernel.org/r/20241020040200.939973-2-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Cc: Coly Li <colyli@suse.de> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: "Liang, Kan" <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Sakai <msakai@redhat.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Kuan-Wei Chiu
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908ef9bb4b |
lib/list_sort: remove unnecessary header includes
Patch series "Remove unnecessary header includes from
{tools/}lib/list_sort.c".
Remove outdated and unnecessary header includes from lib/list_sort.c and
tools/lib/list_sort.c. Additionally, update the hunk exceptions checked
by check_headers.sh to reflect these changes.
This patch (of 3):
After commit
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Kuan-Wei Chiu
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bf9850f6ea |
lib/Makefile: make union-find compilation conditional on CONFIG_CPUSETS
Currently, cpuset is the only user of the union-find implementation. Compiling union-find in all configurations unnecessarily increases the code size when building the kernel without cgroup support. Modify the build system to compile union-find only when CONFIG_CPUSETS is enabled. Link: https://lore.kernel.org/lkml/1ccd6411-5002-4574-bb8e-3e64bba6a757@redhat.com/ Link: https://lkml.kernel.org/r/20241011141214.87096-1-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Suggested-by: Waiman Long <llong@redhat.com> Acked-by: Waiman Long <longman@redhat.com> Acked-by: Tejun Heo <tj@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Koutný <mkoutny@suse.com> Cc: Xavier <xavier_qy@163.com> Cc: Zefan Li <lizefan.x@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Vinicius Peixoto
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5d04270708 |
lib/crc16_kunit.c: add KUnit tests for crc16
Add Kunit tests for the kernel's implementation of the standard CRC-16 algorithm (<linux/crc16.h>). The test data consists of 100 randomly-generated test cases, validated against a naive CRC-16 implementation. This test follows roughly the same logic as lib/crc32test.c, but without the performance measurements. Link: https://lkml.kernel.org/r/20241012-crc16-kunit-v3-1-0ca75cb58ca9@lkcamp.dev Signed-off-by: Vinicius Peixoto <vpeixoto@lkcamp.dev> Co-developed-by: Enzo Bertoloti <ebertoloti@lkcamp.dev> Signed-off-by: Enzo Bertoloti <ebertoloti@lkcamp.dev> Co-developed-by: Fabricio Gasperin <fgasperin@lkcamp.dev> Signed-off-by: Fabricio Gasperin <fgasperin@lkcamp.dev> Suggested-by: David Laight <David.Laight@ACULAB.COM> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: David Gow <davidgow@google.com> Cc: Rae Moar <rmoar@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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I Hsin Cheng
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5a3c9366cb |
list: test: check the size of every lists for list_cut_position*()
Check the total number of elements in both resultant lists are correct within list_cut_position*(). Previously, only the first list's size was checked. so additional elements in the second list would not have been caught. Link: https://lkml.kernel.org/r/20241008065253.26673-1-richard120310@gmail.com Signed-off-by: I Hsin Cheng <richard120310@gmail.com> Cc: David Gow <davidgow@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Kuan-Wei Chiu
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b42166427b |
lib/Kconfig.debug: move int_pow test option to runtime testing section
When executing 'make menuconfig' with KUNIT enabled, the int_pow test
option appears on the first page of the main menu instead of under the
runtime testing section. Relocate the int_pow test configuration to the
appropriate runtime testing submenu, ensuring a more organized and logical
structure in the menu configuration.
Link: https://lkml.kernel.org/r/20241005222221.2154393-1-visitorckw@gmail.com
Fixes:
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Wei Yang
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5059aa6334 |
maple_tree: memset maple_big_node as a whole
In mast_fill_bnode(), we first clear some fields of maple_big_node and set the 'type' unconditionally before return. This means we won't leverage any information in maple_big_node and it is safe to clear the whole structure. In maple_big_node, we define slot and padding/gap in a union. And based on current definition of MAPLE_BIG_NODE_SLOTS/GAPS, padding is always less than slot and part of the gap is overlapped by slot. For example on 64bit system: MAPLE_BIG_NODE_SLOT is 34 MAPLE_BIG_NODE_GAP is 21 With this knowledge, current code may clear some space by twice. And this could be avoid by clearing the structure as a whole. Link: https://lkml.kernel.org/r/20240908140554.20378-3-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Wei Yang
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f36ba81081 |
maple_tree: remove maple_big_node.parent
Patch series "Reduce the space to be cleared for maple_big_node", v2. Found current code may clear maple_big_node redundantly. First we define a field parent, which is never used. After removing this, we reduce the size of memory to be cleared by memset. Then mast_fill_bnode() clears part of the structure twice, since slot and gap share some space. By clearing the whole structure, we can avoid this. This patch (of 2): The member parent of maple_big_node is never used. Let's remove it which could reduce the number of space to be cleared on memset. Link: https://lkml.kernel.org/r/20240908140554.20378-1-richard.weiyang@gmail.com Link: https://lkml.kernel.org/r/20240908140554.20378-2-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Wei Yang
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1c148069b2 |
maple_tree: goto complete directly on a pivot of 0
When we break the loop after assigning a pivot, the index i/j is not changed. Then the following code assign pivot, which means we do the assignment with same i/j by mas_safe_pivot. Since the loop condition is (i < piv_end), from which we can get i is less than mt_pivots[mt]. It implies mas_safe_pivot() return pivot[i] which is the same value we get in loop. Now we can conclude it does a redundant assignment on a pivot of 0. Let's just go to complete to avoid it. Link: https://lkml.kernel.org/r/20240911142759.20989-3-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Wei Yang
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8c7904a8cd |
maple_tree: i is always less than or equal to mas_end
Patch series "refine mas_mab_cp()".
By analysis of the code, one condition check can be removed and one case
would hit a redundant assignment.
This patch (of 2):
mas_mab_cp() copy range [mas_start, mas_end] inclusively from a
maple_node to maple_big_node. This implies mas_start <= mas_end.
Based on the relationship of mas_start and mas_end, we can have the
following four cases:
| mas_start == mas_end | mas_start < mas_end
---------------+----------------------+----------------------
mas_start == 0 | 1 | 2
---------------+----------------------+----------------------
mas_start != 0 | 3 | 4
We can see in all these four cases, i is always less than or equal to
mas_end after finish the loop:
Case 1: After assign pivot 0, i is set to 1, which is bigger than
mas_end 0. So it jumps to complete and skip the check.
Case 2: After assign pivot 0, i is set to 1.
∵ (mas_start < mas_end) && (mas_start == 0)
==> (1 <= mas_end)
∵ (i == 1) && (1 <= mas_end)
==> (i <= mas_end)
∴ Before loop, we have (i <= mas_end). And we still hold this
if it skips the loop. For example, (i == mas_end).
Now let's see what happens in the loop:
∵ piv_end = min(mas_end, mt_pivots[mt])
==> (piv_end <= mas_end)
∵ loop condition is (i < piv_end)
==> (i <= piv_end) on finish the loop both normally or break
∵ (i <= piv_end) && (piv_end <= mas_end)
==> (i <= mas_end)
∴ After loop, we still get (i <= mas_end) in this case
Case 3: This case would skip both if clause and loop. So when it comes
to the check, i is still mas_start which equals to mas_end.
Case 4: This case would skip the if clause.
∵ (mas_start < mas_end) && (i == mas_start)
==> (i < mas_end)
∴ Before loop, we have (i < mas_end).
The loop process is similar with Case 2, so we get the same
result.
Now we can conclude in all cases, we get (i <= mas_end) when doing
check. Then it is not necessary to do the check.
Link: https://lkml.kernel.org/r/20240911142759.20989-1-richard.weiyang@gmail.com
Link: https://lkml.kernel.org/r/20240911142759.20989-2-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Greg Kroah-Hartman
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09fbb82f94 |
Merge 6.12-rc6 into driver-core-next
We need the driver-core fix/revert in here as well to build on top of. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Jakub Kicinski
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cbf49bed6a |
bpf-next-for-netdev
-----BEGIN PGP SIGNATURE----- iIsEABYIADMWIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZyP6TxUcZGFuaWVsQGlv Z2VhcmJveC5uZXQACgkQ2yufC7HISINz7QD/RTuJAzPJXPQmjdzMj7pepjnSQH4K DnOc1soDqjJPSFkBAMlklDCZqSsFoNtNxagbyILrYQBC/MsV9jngimK46DEN =pDzC -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2024-10-31 We've added 13 non-merge commits during the last 16 day(s) which contain a total of 16 files changed, 710 insertions(+), 668 deletions(-). The main changes are: 1) Optimize and homogenize bpf_csum_diff helper for all archs and also add a batch of new BPF selftests for it, from Puranjay Mohan. 2) Rewrite and migrate the test_tcp_check_syncookie.sh BPF selftest into test_progs so that it can be run in BPF CI, from Alexis Lothoré. 3) Two BPF sockmap selftest fixes, from Zijian Zhang. 4) Small XDP synproxy BPF selftest cleanup to remove IP_DF check, from Vincent Li. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: selftests/bpf: Add a selftest for bpf_csum_diff() selftests/bpf: Don't mask result of bpf_csum_diff() in test_verifier bpf: bpf_csum_diff: Optimize and homogenize for all archs net: checksum: Move from32to16() to generic header selftests/bpf: remove xdp_synproxy IP_DF check selftests/bpf: remove test_tcp_check_syncookie selftests/bpf: test MSS value returned with bpf_tcp_gen_syncookie selftests/bpf: add ipv4 and dual ipv4/ipv6 support in btf_skc_cls_ingress selftests/bpf: get rid of global vars in btf_skc_cls_ingress selftests/bpf: add missing ns cleanups in btf_skc_cls_ingress selftests/bpf: factorize conn and syncookies tests in a single runner selftests/bpf: Fix txmsg_redir of test_txmsg_pull in test_sockmap selftests/bpf: Fix msg_verify_data in test_sockmap ==================== Link: https://patch.msgid.link/20241031221543.108853-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Caleb Sander Mateos
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61bf0009a7 |
dim: pass dim_sample to net_dim() by reference
net_dim() is currently passed a struct dim_sample argument by value.
struct dim_sample is 24 bytes. Since this is greater 16 bytes, x86-64
passes it on the stack. All callers have already initialized dim_sample
on the stack, so passing it by value requires pushing a duplicated copy
to the stack. Either witing to the stack and immediately reading it, or
perhaps dereferencing addresses relative to the stack pointer in a chain
of push instructions, seems to perform quite poorly.
In a heavy TCP workload, mlx5e_handle_rx_dim() consumes 3% of CPU time,
94% of which is attributed to the first push instruction to copy
dim_sample on the stack for the call to net_dim():
// Call ktime_get()
0.26 |4ead2: call 4ead7 <mlx5e_handle_rx_dim+0x47>
// Pass the address of struct dim in %rdi
|4ead7: lea 0x3d0(%rbx),%rdi
// Set dim_sample.pkt_ctr
|4eade: mov %r13d,0x8(%rsp)
// Set dim_sample.byte_ctr
|4eae3: mov %r12d,0xc(%rsp)
// Set dim_sample.event_ctr
0.15 |4eae8: mov %bp,0x10(%rsp)
// Duplicate dim_sample on the stack
94.16 |4eaed: push 0x10(%rsp)
2.79 |4eaf1: push 0x10(%rsp)
0.07 |4eaf5: push %rax
// Call net_dim()
0.21 |4eaf6: call 4eafb <mlx5e_handle_rx_dim+0x6b>
To allow the caller to reuse the struct dim_sample already on the stack,
pass the struct dim_sample by reference to net_dim().
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Shannon Nelson <shannon.nelson@amd.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Arthur Kiyanovski <akiyano@amazon.com>
Reviewed-by: Louis Peens <louis.peens@corigine.com>
Link: https://patch.msgid.link/20241031002326.3426181-2-csander@purestorage.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
|
Caleb Sander Mateos
|
a865276872 |
dim: make dim_calc_stats() inputs const pointers
Make the start and end arguments to dim_calc_stats() const pointers to clarify that the function does not modify their values. Signed-off-by: Caleb Sander Mateos <csander@purestorage.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com> Reviewed-by: Arthur Kiyanovski <akiyano@amazon.com> Link: https://patch.msgid.link/20241031002326.3426181-1-csander@purestorage.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Bartosz Golaszewski
|
a508ef4b1d |
lib: string_helpers: silence snprintf() output truncation warning
The output of ".%03u" with the unsigned int in range [0, 4294966295] may
get truncated if the target buffer is not 12 bytes. This can't really
happen here as the 'remainder' variable cannot exceed 999 but the
compiler doesn't know it. To make it happy just increase the buffer to
where the warning goes away.
Fixes:
|
||
|
Thomas Gleixner
|
d44d26987b |
timekeeping: Remove CONFIG_DEBUG_TIMEKEEPING
Since
|
||
|
Ming Lei
|
341468e0ab |
lib/iov_iter: fix bvec iterator setup
.bi_size of bvec iterator should be initialized as real max size for
walking, and .bi_bvec_done just counts how many bytes need to be
skipped in the 1st bvec, so .bi_size isn't related with .bi_bvec_done.
This patch fixes bvec iterator initialization, and the inner `size`
check isn't needed any more, so revert Eric Dumazet's commit
7bc802acf193 ("iov-iter: do not return more bytes than requested in
iov_iter_extract_bvec_pages()").
Cc: Eric Dumazet <edumazet@google.com>
Fixes:
|
||
|
Linus Torvalds
|
3dfffd506e |
arm64 fixes for -rc6
- Fix handling of POR_EL0 during signal delivery so that pushing the
signal context doesn't fail based on the pkey configuration of the
interrupted context and align our user-visible behaviour with that of
x86.
- Fix a bogus pointer being passed to the CPU hotplug code from the
Arm SDEI driver.
- Re-enable software tag-based KASAN with GCC by using an alternative
implementation of '__no_sanitize_address'.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"The important one is a change to the way in which we handle protection
keys around signal delivery so that we're more closely aligned with
the x86 behaviour, however there is also a revert of the previous fix
to disable software tag-based KASAN with GCC, since a workaround
materialised shortly afterwards.
I'd love to say we're done with 6.12, but we're aware of some
longstanding fpsimd register corruption issues that we're almost at
the bottom of resolving.
Summary:
- Fix handling of POR_EL0 during signal delivery so that pushing the
signal context doesn't fail based on the pkey configuration of the
interrupted context and align our user-visible behaviour with that
of x86.
- Fix a bogus pointer being passed to the CPU hotplug code from the
Arm SDEI driver.
- Re-enable software tag-based KASAN with GCC by using an alternative
implementation of '__no_sanitize_address'"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: signal: Improve POR_EL0 handling to avoid uaccess failures
firmware: arm_sdei: Fix the input parameter of cpuhp_remove_state()
Revert "kasan: Disable Software Tag-Based KASAN with GCC"
kasan: Fix Software Tag-Based KASAN with GCC
|
||
|
Linus Torvalds
|
d56239a82e |
vfs-6.12-rc6.fixes
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Merge tag 'vfs-6.12-rc6.fixes' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
Pull filesystem fixes from Christian Brauner:
"VFS:
- Fix copy_page_from_iter_atomic() if KMAP_LOCAL_FORCE_MAP=y is set
- Add a get_tree_bdev_flags() helper that allows to modify e.g.,
whether errors are logged into the filesystem context during
superblock creation. This is used by erofs to fix a userspace
regression where an error is currently logged when its used on a
regular file which is an new allowed mode in erofs.
netfs:
- Fix the sysfs debug path in the documentation.
- Fix iov_iter_get_pages*() for folio queues by skipping the page
extracation if we're at the end of a folio.
afs:
- Fix moving subdirectories to different parent directory.
autofs:
- Fix handling of AUTOFS_DEV_IOCTL_TIMEOUT_CMD ioctl in
validate_dev_ioctl(). The actual ioctl number, not the ioctl
command needs to be checked for autofs"
* tag 'vfs-6.12-rc6.fixes' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs:
iov_iter: fix copy_page_from_iter_atomic() if KMAP_LOCAL_FORCE_MAP
autofs: fix thinko in validate_dev_ioctl()
iov_iter: Fix iov_iter_get_pages*() for folio_queue
afs: Fix missing subdir edit when renamed between parent dirs
doc: correcting the debug path for cachefiles
erofs: use get_tree_bdev_flags() to avoid misleading messages
fs/super.c: introduce get_tree_bdev_flags()
|
||
|
Eric Dumazet
|
a911bad094 |
dql: annotate data-races around dql->last_obj_cnt
dql->last_obj_cnt is read/written from different contexts, without any lock synchronization. Use READ_ONCE()/WRITE_ONCE() to avoid load/store tearing. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Joe Damato <jdamato@fastly.com> Link: https://patch.msgid.link/20241029191425.2519085-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jakub Kicinski
|
5b1c965956 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.12-rc6). Conflicts: drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c |
||
|
Ming Lei
|
496a51b371 |
lib/iov_iter.c: initialize bi.bi_idx before iterating over bvec
Initialize bi.bi_idx as 0 before iterating over bvec, otherwise
garbage data can be used as ->bi_idx.
Cc: Christoph Hellwig <hch@lst.de>
Reported-and-tested-by: Klara Modin <klarasmodin@gmail.com>
Fixes:
|
||
|
Puranjay Mohan
|
db71aae70e |
net: checksum: Move from32to16() to generic header
from32to16() is used by lib/checksum.c and also by arch/parisc/lib/checksum.c. The next patch will use it in the bpf_csum_diff helper. Move from32to16() to the include/net/checksum.h as csum_from32to16() and remove other implementations. Signed-off-by: Puranjay Mohan <puranjay@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20241026125339.26459-2-puranjay@kernel.org |
||
|
Linus Torvalds
|
7fbaacafbc |
slab fixes for 6.12-rc6
-----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEe7vIQRWZI0iWSE3xu+CwddJFiJoFAmcgrxcACgkQu+CwddJF iJrq9ggAiZ/2c7p23s52LdVhT9GTyV5omVOh2kDztVx4w6RM3RbkhkLWdqt0XUag uf1TJe6kOvnCeHEFEEo3sqPj820XebxKDf0GGCdI6a9f4n30ipKH+vWSQ0iutKO/ dOBdArxr0FGOV5VZR9i3xQ6sUqZXXUbJdte0c0ovp6Q6HDHTeQeKNhOQ2fv33TG/ 7jBh5HVyhI6JE/+TOxrMaklH0IqYBb6z49wdbaN7XBvXVXlb5MtOZy109gfUHDwe tfktifyE45VtmF0WdHfxDbCnqyDSG1Jm3wsLDbMq+voJ1BQlUvIZ5Dv4kucYqffm VN5HkH6uQ09aoounBoU4g50UYeNpiQ== =xAw8 -----END PGP SIGNATURE----- Merge tag 'slab-for-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab Pull slab fixes from Vlastimil Babka: - Fix for a slub_kunit test warning with MEM_ALLOC_PROFILING_DEBUG (Pei Xiao) - Fix for a MTE-based KASAN BUG in krealloc() (Qun-Wei Lin) * tag 'slab-for-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: mm: krealloc: Fix MTE false alarm in __do_krealloc slub/kunit: fix a WARNING due to unwrapped __kmalloc_cache_noprof |
||
|
Ming Lei
|
e4e535bff2 |
iov_iter: don't require contiguous pages in iov_iter_extract_bvec_pages
The iov_iter_extract_pages interface allows to return physically discontiguous pages, as long as all but the first and last page in the array are page aligned and page size. Rewrite iov_iter_extract_bvec_pages to take advantage of that instead of only returning ranges of physically contiguous pages. Signed-off-by: Ming Lei <ming.lei@redhat.com> [hch: minor cleanups, new commit log] Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20241024050021.627350-1-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Arnd Bergmann
|
5a8b4b4001 |
lib/iomem_copy: fix kerneldoc format style
The newly added file did not quite get the punctuation right: lib/iomem_copy.c:14: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202410290907.0mDZVYPK-lkp@intel.com/ Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
|
Arnd Bergmann
|
af08475370 |
selftests: kallsyms: add MODULE_DESCRIPTION
The newly added test script creates modules that are lacking
a description line in order to build cleanly:
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/tests/module/test_kallsyms_a.o
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/tests/module/test_kallsyms_b.o
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/tests/module/test_kallsyms_c.o
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/tests/module/test_kallsyms_d.o
Fixes:
|
||
|
Julian Vetter
|
b660d0a2ac
|
New implementation for IO memcpy and IO memset
The IO memcpy and IO memset functions in asm-generic/io.h simply call
memcpy and memset. This can lead to alignment problems or faults on
architectures that do not define their own version and fall back to
these defaults.
This patch introduces new implementations for IO memcpy and IO memset,
that use read{l,q} accessor functions, align accesses to machine word
size, and resort to byte accesses when the target memory is not aligned.
For new architectures and existing ones that were using the old
fallbacks these functions are save to use, because IO memory constraints
are taken into account. Moreover, architectures with similar
implementations can now use these new versions, not needing to implement
their own.
Reviewed-by: Yann Sionneau <ysionneau@kalrayinc.com>
Signed-off-by: Julian Vetter <jvetter@kalrayinc.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
|
||
|
Nicolas Pitre
|
1dc82675cb
|
lib/math/test_div64: add some edge cases relevant to __div64_const32()
Be sure to test the extreme cases with and without bias. Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
|
Ira Weiny
|
4261974701 |
printf: Add print format (%pra) for struct range
The use of struct range in the CXL subsystem is growing. In particular, the addition of Dynamic Capacity devices uses struct range in a number of places which are reported in debug and error messages. To wit requiring the printing of the start/end fields in each print became cumbersome. Dan Williams mentions in [1] that it might be time to have a print specifier for struct range similar to struct resource. A few alternatives were considered including '%par', '%r', and '%pn'. %pra follows that struct range is similar to struct resource (%p[rR]) but needs to be different. Based on discussions with Petr and Andy '%pra' was chosen.[2] Andy also suggested to keep the range prints similar to struct resource though combined code. Add hex_range() to handle printing for both pointer types. Finally introduce DEFINE_RANGE() as a parallel to DEFINE_RES_*() and use it in the tests. Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: open list <linux-kernel@vger.kernel.org> Link: https://lore.kernel.org/all/663922b475e50_d54d72945b@dwillia2-xfh.jf.intel.com.notmuch/ [1] Link: https://lore.kernel.org/all/66cea3bf3332f_f937b29424@iweiny-mobl.notmuch/ [2] Suggested-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20241025-cxl-pra-v2-3-123a825daba2@intel.com Signed-off-by: Dave Jiang <dave.jiang@intel.com> |
||
|
Ira Weiny
|
8e7f07e608 |
test printf: Add very basic struct resource tests
The printf tests for struct resource were stubbed out. struct range printing will leverage the struct resource implementation. To prevent regression add some basic sanity tests for struct resource. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Fan Ni <fan.ni@samsung.com> Tested-by: Fan Ni <fan.ni@samsung.com> Acked-by: Petr Mladek <pmladek@suse.com> Link: https://patch.msgid.link/20241007-dcd-type2-upstream-v4-1-c261ee6eeded@intel.com Tested-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Ira Weiny <ira.weiny@intel.com> Link: https://patch.msgid.link/20241025-cxl-pra-v2-1-123a825daba2@intel.com Signed-off-by: Dave Jiang <dave.jiang@intel.com> |
||
|
Hugh Dickins
|
c749d9b7eb
|
iov_iter: fix copy_page_from_iter_atomic() if KMAP_LOCAL_FORCE_MAP
generic/077 on x86_32 CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP=y with highmem,
on huge=always tmpfs, issues a warning and then hangs (interruptibly):
WARNING: CPU: 5 PID: 3517 at mm/highmem.c:622 kunmap_local_indexed+0x62/0xc9
CPU: 5 UID: 0 PID: 3517 Comm: cp Not tainted 6.12.0-rc4 #2
...
copy_page_from_iter_atomic+0xa6/0x5ec
generic_perform_write+0xf6/0x1b4
shmem_file_write_iter+0x54/0x67
Fix copy_page_from_iter_atomic() by limiting it in that case
(include/linux/skbuff.h skb_frag_must_loop() does similar).
But going forward, perhaps CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP is too
surprising, has outlived its usefulness, and should just be removed?
Fixes:
|
||
|
Eric Biggers
|
4964a1d91c |
crypto: api - move crypto_simd_disabled_for_test to lib
Move crypto_simd_disabled_for_test to lib/ so that crypto_simd_usable() can be used by library code. This was discussed previously (https://lore.kernel.org/linux-crypto/20220716062920.210381-4-ebiggers@kernel.org/) but was not done because there was no use case yet. However, this is now needed for the arm64 CRC32 library code. Tested with: export ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- echo CONFIG_CRC32=y > .config echo CONFIG_MODULES=y >> .config echo CONFIG_CRYPTO=m >> .config echo CONFIG_DEBUG_KERNEL=y >> .config echo CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=n >> .config echo CONFIG_CRYPTO_MANAGER_EXTRA_TESTS=y >> .config make olddefconfig make -j$(nproc) Signed-off-by: Eric Biggers <ebiggers@google.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Ard Biesheuvel
|
16739efac6 |
crypto: crc32c - Provide crc32c-arch driver for accelerated library code
crc32c-generic is currently backed by the architecture's CRC-32c library code, which may offer a variety of implementations depending on the capabilities of the platform. These are not covered by the crypto subsystem's fuzz testing capabilities because crc32c-generic is the reference driver that the fuzzing logic uses as a source of truth. Fix this by providing a crc32c-arch implementation which is based on the arch library code if available, and modify crc32c-generic so it is always based on the generic C implementation. If the arch has no CRC-32c library code, this change does nothing. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Ard Biesheuvel
|
a37e55791f |
crypto: crc32 - Provide crc32-arch driver for accelerated library code
crc32-generic is currently backed by the architecture's CRC-32 library code, which may offer a variety of implementations depending on the capabilities of the platform. These are not covered by the crypto subsystem's fuzz testing capabilities because crc32-generic is the reference driver that the fuzzing logic uses as a source of truth. Fix this by providing a crc32-arch implementation which is based on the arch library code if available, and modify crc32-generic so it is always based on the generic C implementation. If the arch has no CRC-32 library code, this change does nothing. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Paolo Abeni
|
03fc07a247 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts and no adjacent changes. Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
|
Linus Torvalds
|
c2cd8e4592 |
Probes fixes for v6.12-rc4(2):
- objpool: Fix choosing allocation for percpu slots Fixes to allocate objpool's percpu slots correctly according to the GFP flag. It checks whether "any bit" in GFP_ATOMIC is set to choose the vmalloc source, but it should check "all bits" in GFP_ATOMIC flag is set, because GFP_ATOMIC is a combined flag. - tracing/probes: Fix MAX_TRACE_ARGS limit handling If more than MAX_TRACE_ARGS are passed for creating a probe event, the entries over MAX_TRACE_ARG in trace_arg array are not initialized. Thus if the kernel accesses those entries, it crashes. This rejects creating event if the number of arguments is over MAX_TRACE_ARGS. - tracing: Consider the NULL character when validating the event length A strlen() is used when parsing the event name, and the original code does not consider the terminal null byte. Thus it can pass the name 1 byte longer than the buffer. This fixes to check it correctly. -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEh7BulGwFlgAOi5DV2/sHvwUrPxsFAmcZBJ0ACgkQ2/sHvwUr Pxu4qAgAm+mIiCaBGyolsT1oB5EF+9gztbwRtcAOY1811RJZ0XiQPuOwtZfijpBr 1Pl+SjubRKhLg+lLHEuCQHxkqlTSp+zrjkF+A0hFlB38nJ5P3pIw+b5pM5FCvhY+ w0tBTwkjiRBS9h1z88c74ciKYA/XR4apcMMUrPQZUCHq8P73Wu/Fo2lhnCVGBs6q nYESyrTcOCDR0c6HP9D2GWxQFtbbCyAfotUjX37EIooTcl7ufAr8IPm8jBx7EzCa WM841FwbuIgGbFCGYlG1/lOR+Qf7FszKAY5SBJMV/BiyFbxJqZfA5DWfJcrZ9YpW pl86oKWyEkidwx8OIiB3Y1enPzUUJQ== =8oUB -----END PGP SIGNATURE----- Merge tag 'probes-fixes-v6.12-rc4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull probes fixes from Masami Hiramatsu: - objpool: Fix choosing allocation for percpu slots Fixes to allocate objpool's percpu slots correctly according to the GFP flag. It checks whether "any bit" in GFP_ATOMIC is set to choose the vmalloc source, but it should check "all bits" in GFP_ATOMIC flag is set, because GFP_ATOMIC is a combined flag. - tracing/probes: Fix MAX_TRACE_ARGS limit handling If more than MAX_TRACE_ARGS are passed for creating a probe event, the entries over MAX_TRACE_ARG in trace_arg array are not initialized. Thus if the kernel accesses those entries, it crashes. This rejects creating event if the number of arguments is over MAX_TRACE_ARGS. - tracing: Consider the NUL character when validating the event length A strlen() is used when parsing the event name, and the original code does not consider the terminal null byte. Thus it can pass the name one byte longer than the buffer. This fixes to check it correctly. * tag 'probes-fixes-v6.12-rc4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: tracing: Consider the NULL character when validating the event length tracing/probes: Fix MAX_TRACE_ARGS limit handling objpool: fix choosing allocation for percpu slots |
||
|
Luis Chamberlain
|
84b4a51fce |
selftests: add new kallsyms selftests
We lack find_symbol() selftests, so add one. This let's us stress test
improvements easily on find_symbol() or optimizations. It also inherently
allows us to test the limits of kallsyms on Linux today.
We test a pathalogical use case for kallsyms by introducing modules
which are automatically written for us with a larger number of symbols.
We have 4 kallsyms test modules:
A: has KALLSYSMS_NUMSYMS exported symbols
B: uses one of A's symbols
C: adds KALLSYMS_SCALE_FACTOR * KALLSYSMS_NUMSYMS exported
D: adds 2 * the symbols than C
By using anything much larger than KALLSYSMS_NUMSYMS as 10,000 and
KALLSYMS_SCALE_FACTOR of 8 we segfault today. So we're capped at
around 160000 symbols somehow today. We can inpsect that issue at
our leasure later, but for now the real value to this test is that
this will easily allow us to test improvements on find_symbol().
We want to enable this test on allyesmodconfig builds so we can't
use this combination, so instead just use a safe value for now and
be informative on the Kconfig symbol documentation about where our
thresholds are for testers. We default then to KALLSYSMS_NUMSYMS of
just 100 and KALLSYMS_SCALE_FACTOR of 8.
On x86_64 we can use perf, for other architectures we just use 'time'
and allow for customizations. For example a future enhancements could
be done for parisc to check for unaligned accesses which triggers a
special special exception handler assembler code inside the kernel.
The negative impact on performance is so large on parisc that it
keeps track of its accesses on /proc/cpuinfo as UAH:
IRQ: CPU0 CPU1
3: 1332 0 SuperIO ttyS0
7:
|
||
|
David Howells
|
e65a0dc1ca
|
iov_iter: Fix iov_iter_get_pages*() for folio_queue
p9_get_mapped_pages() uses iov_iter_get_pages_alloc2() to extract pages
from an iterator when performing a zero-copy request and under some
circumstances, this crashes with odd page errors[1], for example, I see:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xbcf0
flags: 0x2000000000000000(zone=1)
...
page dumped because: VM_BUG_ON_FOLIO(((unsigned int) folio_ref_count(folio) + 127u <= 127u))
------------[ cut here ]------------
kernel BUG at include/linux/mm.h:1444!
This is because, unlike in iov_iter_extract_folioq_pages(), the
iter_folioq_get_pages() helper function doesn't skip the current folio
when iov_offset points to the end of it, but rather extracts the next
page beyond the end of the folio and adds it to the list. Reading will
then clobber the contents of this page, leading to system corruption,
and if the page is not in use, put_page() may try to clean up the unused
page.
This can be worked around by copying the iterator before each
extraction[2] and using iov_iter_advance() on the original as the
advance function steps over the page we're at the end of.
Fix this by skipping the page extraction if we're at the end of the
folio.
This was reproduced in the ktest environment[3] by forcing 9p to use the
fscache caching mode and then reading a file through 9p.
Fixes:
|
||
|
Marco Elver
|
237ab03e30 |
Revert "kasan: Disable Software Tag-Based KASAN with GCC"
This reverts commit
|
||
|
Pei Xiao
|
2b059d0d1e |
slub/kunit: fix a WARNING due to unwrapped __kmalloc_cache_noprof
'modprobe slub_kunit' will have a warning as shown below. The root cause
is that __kmalloc_cache_noprof was directly used, which resulted in no
alloc_tag being allocated. This caused current->alloc_tag to be null,
leading to a warning in alloc_tag_add_check.
Let's add an alloc_hook layer to __kmalloc_cache_noprof specifically
within lib/slub_kunit.c, which is the only user of this internal slub
function outside kmalloc implementation itself.
[58162.947016] WARNING: CPU: 2 PID: 6210 at
./include/linux/alloc_tag.h:125 alloc_tagging_slab_alloc_hook+0x268/0x27c
[58162.957721] Call trace:
[58162.957919] alloc_tagging_slab_alloc_hook+0x268/0x27c
[58162.958286] __kmalloc_cache_noprof+0x14c/0x344
[58162.958615] test_kmalloc_redzone_access+0x50/0x10c [slub_kunit]
[58162.959045] kunit_try_run_case+0x74/0x184 [kunit]
[58162.959401] kunit_generic_run_threadfn_adapter+0x2c/0x4c [kunit]
[58162.959841] kthread+0x10c/0x118
[58162.960093] ret_from_fork+0x10/0x20
[58162.960363] ---[ end trace 0000000000000000 ]---
Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
Fixes:
|
||
|
Viktor Malik
|
aff1871bfc |
objpool: fix choosing allocation for percpu slots
objpool intends to use vmalloc for default (non-atomic) allocations of
percpu slots and objects. However, the condition checking if GFP flags
set any bit of GFP_ATOMIC is wrong b/c GFP_ATOMIC is a combination of bits
(__GFP_HIGH|__GFP_KSWAPD_RECLAIM) and so `pool->gfp & GFP_ATOMIC` will
be true if either bit is set. Since GFP_ATOMIC and GFP_KERNEL share the
___GFP_KSWAPD_RECLAIM bit, kmalloc will be used in cases when GFP_KERNEL
is specified, i.e. in all current usages of objpool.
This may lead to unexpected OOM errors since kmalloc cannot allocate
large amounts of memory.
For instance, objpool is used by fprobe rethook which in turn is used by
BPF kretprobe.multi and kprobe.session probe types. Trying to attach
these to all kernel functions with libbpf using
SEC("kprobe.session/*")
int kprobe(struct pt_regs *ctx)
{
[...]
}
fails on objpool slot allocation with ENOMEM.
Fix the condition to truly use vmalloc by default.
Link: https://lore.kernel.org/all/20240826060718.267261-1-vmalik@redhat.com/
Fixes:
|
||
|
Linus Torvalds
|
a777c32ca4 |
This push fixes a regression in mpi that broke RSA.
-----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEn51F/lCuNhUwmDeSxycdCkmxi6cFAmcSJQYACgkQxycdCkmx i6ejoBAAhK/3bk9jmxMOnVvednjrjVMqg+17daXHKbHT6eMcOwXsgr4ZWrkc5syV tQBRipdSfLhwf4aTNOzgyg3GIVVQkLZuRKDanntVdyYs65YKKUP/BiUshMAJ4DbW nkPe+LBdl0EvIWexrSKy5cyB2Yt+5MknK+mUMHyAeRjgVHNCEBMbMo/4KHGDW6fL Cn8rBATD1LCBODkxFC83pHe5M/TsxM08hL8xQxPJZm9SvNiBa7+xaS/oSApyIs8x L0RmYdlXlRGQcok5/ZCFc66QEOw2lIOwIc6sTmbT+eKFtvztkZ+ErhAuubgk5UKa TaB0qrBIpsQs2O7gFq4OU7BkG4QAlFt37MqBuf21b5Zh605s/ORDWEQobcokXpBY SmxOBxBhhLcRgb1cjUQn44/M8vrRXL0+IZiuOWkb+vcNln32bCH+BeiW6traNdL3 s3uVRF28Pd76xB4eAuT4eqiSOuCI/FyB7+hJmkOcpKC1eQUq2whrFLfru3iGItn8 bJWJQjPaysI8QXoky6miMjaeBWWOHuBWgYb2BzzHRsAdxK2oXUN/Q3BOJq1wONtP YaRzqu5vBvPk+0F/SOIl1MBp1nt62T8WRcDyIAhDsgmnuWASAKzo9Smzzo0gJr8q bB9iHTHN6yR9J3+zPyOqPY99zkaABSrQU9StFqEjN8icndG5Tfo= =MHMX -----END PGP SIGNATURE----- Merge tag 'v6.12-p4' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto fix from Herbert Xu: "Fix a regression in mpi that broke RSA" * tag 'v6.12-p4' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: lib/mpi - Fix an "Uninitialized scalar variable" issue |
||
|
Linus Torvalds
|
4e6bd4a33a |
Rust fixes for v6.12 (2nd)
Toolchain and infrastructure:
- Fix several issues with the 'rustc-option' macro. It includes a
refactor from Masahiro of three '{cc,rust}-*' macros, which is not
a fix but avoids repeating the same commands (which would be several
lines in the case of 'rustc-option').
- Fix conditions for 'CONFIG_HAVE_CFI_ICALL_NORMALIZE_INTEGERS'. It
includes the addition of 'CONFIG_RUSTC_LLVM_VERSION', which is not a
fix but is needed for the actual fix.
And a trivial grammar fix.
-----BEGIN PGP SIGNATURE-----
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ibMcpyja8V1CGeOh4qthLJAD/OGw+ANafjLfHM/l9cQRx1uwLEac3h4/YR1x52Ep
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c3AgnTVlm4pPqtlLQ1z9BiGYT50dI0fHBOQiisogGsZwwMUqzEMOnbZjbhS/HKSp
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=Y7fL
-----END PGP SIGNATURE-----
Merge tag 'rust-fixes-6.12-2' of https://github.com/Rust-for-Linux/linux
Pull rust fixes from Miguel Ojeda:
"Toolchain and infrastructure:
- Fix several issues with the 'rustc-option' macro. It includes a
refactor from Masahiro of three '{cc,rust}-*' macros, which is not
a fix but avoids repeating the same commands (which would be
several lines in the case of 'rustc-option').
- Fix conditions for 'CONFIG_HAVE_CFI_ICALL_NORMALIZE_INTEGERS'. It
includes the addition of 'CONFIG_RUSTC_LLVM_VERSION', which is not
a fix but is needed for the actual fix.
And a trivial grammar fix"
* tag 'rust-fixes-6.12-2' of https://github.com/Rust-for-Linux/linux:
cfi: fix conditions for HAVE_CFI_ICALL_NORMALIZE_INTEGERS
kbuild: rust: add `CONFIG_RUSTC_LLVM_VERSION`
kbuild: fix issues with rustc-option
kbuild: refactor cc-option-yn, cc-disable-warning, rust-option-yn macros
lib/Kconfig.debug: fix grammar in RUST_BUILD_ASSERT_ALLOW
|
||
|
Linus Torvalds
|
3d5ad2d4ec |
BPF fixes:
- Fix BPF verifier to not affect subreg_def marks in its range propagation, from Eduard Zingerman. - Fix a truncation bug in the BPF verifier's handling of coerce_reg_to_size_sx, from Dimitar Kanaliev. - Fix the BPF verifier's delta propagation between linked registers under 32-bit addition, from Daniel Borkmann. - Fix a NULL pointer dereference in BPF devmap due to missing rxq information, from Florian Kauer. - Fix a memory leak in bpf_core_apply, from Jiri Olsa. - Fix an UBSAN-reported array-index-out-of-bounds in BTF parsing for arrays of nested structs, from Hou Tao. - Fix build ID fetching where memory areas backing the file were created with memfd_secret, from Andrii Nakryiko. - Fix BPF task iterator tid filtering which was incorrectly using pid instead of tid, from Jordan Rome. - Several fixes for BPF sockmap and BPF sockhash redirection in combination with vsocks, from Michal Luczaj. - Fix riscv BPF JIT and make BPF_CMPXCHG fully ordered, from Andrea Parri. - Fix riscv BPF JIT under CONFIG_CFI_CLANG to prevent the possibility of an infinite BPF tailcall, from Pu Lehui. - Fix a build warning from resolve_btfids that bpf_lsm_key_free cannot be resolved, from Thomas Weißschuh. - Fix a bug in kfunc BTF caching for modules where the wrong BTF object was returned, from Toke Høiland-Jørgensen. - Fix a BPF selftest compilation error in cgroup-related tests with musl libc, from Tony Ambardar. - Several fixes to BPF link info dumps to fill missing fields, from Tyrone Wu. - Add BPF selftests for kfuncs from multiple modules, checking that the correct kfuncs are called, from Simon Sundberg. - Ensure that internal and user-facing bpf_redirect flags don't overlap, also from Toke Høiland-Jørgensen. - Switch to use kvzmalloc to allocate BPF verifier environment, from Rik van Riel. - Use raw_spinlock_t in BPF ringbuf to fix a sleep in atomic splat under RT, from Wander Lairson Costa. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> -----BEGIN PGP SIGNATURE----- iIsEABYIADMWIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZxK4OhUcZGFuaWVsQGlv Z2VhcmJveC5uZXQACgkQ2yufC7HISIOCrwEAib2kC5EEQn5+wKVE/bnZryVX2leT YXdfItDCBU6zCYUA+wTU5hGGn9lcDUcZx72l/KZPDyPw7HdzNJ+6iR1zQqoM =f9kv -----END PGP SIGNATURE----- Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf Pull bpf fixes from Daniel Borkmann: - Fix BPF verifier to not affect subreg_def marks in its range propagation (Eduard Zingerman) - Fix a truncation bug in the BPF verifier's handling of coerce_reg_to_size_sx (Dimitar Kanaliev) - Fix the BPF verifier's delta propagation between linked registers under 32-bit addition (Daniel Borkmann) - Fix a NULL pointer dereference in BPF devmap due to missing rxq information (Florian Kauer) - Fix a memory leak in bpf_core_apply (Jiri Olsa) - Fix an UBSAN-reported array-index-out-of-bounds in BTF parsing for arrays of nested structs (Hou Tao) - Fix build ID fetching where memory areas backing the file were created with memfd_secret (Andrii Nakryiko) - Fix BPF task iterator tid filtering which was incorrectly using pid instead of tid (Jordan Rome) - Several fixes for BPF sockmap and BPF sockhash redirection in combination with vsocks (Michal Luczaj) - Fix riscv BPF JIT and make BPF_CMPXCHG fully ordered (Andrea Parri) - Fix riscv BPF JIT under CONFIG_CFI_CLANG to prevent the possibility of an infinite BPF tailcall (Pu Lehui) - Fix a build warning from resolve_btfids that bpf_lsm_key_free cannot be resolved (Thomas Weißschuh) - Fix a bug in kfunc BTF caching for modules where the wrong BTF object was returned (Toke Høiland-Jørgensen) - Fix a BPF selftest compilation error in cgroup-related tests with musl libc (Tony Ambardar) - Several fixes to BPF link info dumps to fill missing fields (Tyrone Wu) - Add BPF selftests for kfuncs from multiple modules, checking that the correct kfuncs are called (Simon Sundberg) - Ensure that internal and user-facing bpf_redirect flags don't overlap (Toke Høiland-Jørgensen) - Switch to use kvzmalloc to allocate BPF verifier environment (Rik van Riel) - Use raw_spinlock_t in BPF ringbuf to fix a sleep in atomic splat under RT (Wander Lairson Costa) * tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: (38 commits) lib/buildid: Handle memfd_secret() files in build_id_parse() selftests/bpf: Add test case for delta propagation bpf: Fix print_reg_state's constant scalar dump bpf: Fix incorrect delta propagation between linked registers bpf: Properly test iter/task tid filtering bpf: Fix iter/task tid filtering riscv, bpf: Make BPF_CMPXCHG fully ordered bpf, vsock: Drop static vsock_bpf_prot initialization vsock: Update msg_count on read_skb() vsock: Update rx_bytes on read_skb() bpf, sockmap: SK_DROP on attempted redirects of unsupported af_vsock selftests/bpf: Add asserts for netfilter link info bpf: Fix link info netfilter flags to populate defrag flag selftests/bpf: Add test for sign extension in coerce_subreg_to_size_sx() selftests/bpf: Add test for truncation after sign extension in coerce_reg_to_size_sx() bpf: Fix truncation bug in coerce_reg_to_size_sx() selftests/bpf: Assert link info uprobe_multi count & path_size if unset bpf: Fix unpopulated path_size when uprobe_multi fields unset selftests/bpf: Fix cross-compiling urandom_read selftests/bpf: Add test for kfunc module order ... |
||
|
Sebastian Andrzej Siewior
|
560af5dc83 |
lockdep: Enable PROVE_RAW_LOCK_NESTING with PROVE_LOCKING.
With the printk issues solved, the last known splat created by PROVE_RAW_LOCK_NESTING is gone. Enable PROVE_RAW_LOCK_NESTING by default as part of PROVE_LOCKING. Keep the defines around in case something serious pops up and it needs to be disabled. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: Waiman Long <longman@redhat.com> Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Link: https://lore.kernel.org/r/20241009161041.1018375-2-bigeasy@linutronix.de |
||
|
Ahmed Ehab
|
5eadeb7b3b |
locking/lockdep: Add a test for lockdep_set_subclass()
Add a test case to ensure that no new name string literal will be created in lockdep_set_subclass(), otherwise a warning will be triggered in look_up_lock_class(). Add this to catch the problem in the future. [boqun: Reword the title, replace #if with #ifdef and rename functions and variables] Signed-off-by: Ahmed Ehab <bottaawesome633@gmail.com> Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Link: https://lore.kernel.org/lkml/20240905011220.356973-1-bottaawesome633@gmail.com/ |
||
|
Linus Torvalds
|
4d939780b7 |
28 hotfixes. 13 are cc:stable. 23 are MM.
It is the usual shower of unrelated singletons - please see the individual changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZxGY5wAKCRDdBJ7gKXxA js6RAQC16zQ7WRV091i79cEi1C5648NbZjMCU626hZjuyfbzKgEA2v8PYtjj9w2e UGLxMY+PYZki2XNEh75Sikdkiyl9Vgg= =xcWT -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2024-10-17-16-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "28 hotfixes. 13 are cc:stable. 23 are MM. It is the usual shower of unrelated singletons - please see the individual changelogs for details" * tag 'mm-hotfixes-stable-2024-10-17-16-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (28 commits) maple_tree: add regression test for spanning store bug maple_tree: correct tree corruption on spanning store mm/mglru: only clear kswapd_failures if reclaimable mm/swapfile: skip HugeTLB pages for unuse_vma selftests: mm: fix the incorrect usage() info of khugepaged MAINTAINERS: add Jann as memory mapping/VMA reviewer mm: swap: prevent possible data-race in __try_to_reclaim_swap mm: khugepaged: fix the incorrect statistics when collapsing large file folios MAINTAINERS: kasan, kcov: add bugzilla links mm: don't install PMD mappings when THPs are disabled by the hw/process/vma mm: huge_memory: add vma_thp_disabled() and thp_disabled_by_hw() Docs/damon/maintainer-profile: update deprecated awslabs GitHub URLs Docs/damon/maintainer-profile: add missing '_' suffixes for external web links maple_tree: check for MA_STATE_BULK on setting wr_rebalance mm: khugepaged: fix the arguments order in khugepaged_collapse_file trace point mm/damon/tests/sysfs-kunit.h: fix memory leak in damon_sysfs_test_add_targets() mm: remove unused stub for can_swapin_thp() mailmap: add an entry for Andy Chiu MAINTAINERS: add memory mapping/VMA co-maintainers fs/proc: fix build with GCC 15 due to -Werror=unterminated-string-initialization ... |
||
|
Andrii Nakryiko
|
5ac9b4e935 |
lib/buildid: Handle memfd_secret() files in build_id_parse()
>From memfd_secret(2) manpage:
The memory areas backing the file created with memfd_secret(2) are
visible only to the processes that have access to the file descriptor.
The memory region is removed from the kernel page tables and only the
page tables of the processes holding the file descriptor map the
corresponding physical memory. (Thus, the pages in the region can't be
accessed by the kernel itself, so that, for example, pointers to the
region can't be passed to system calls.)
We need to handle this special case gracefully in build ID fetching
code. Return -EFAULT whenever secretmem file is passed to build_id_parse()
family of APIs. Original report and repro can be found in [0].
[0] https://lore.kernel.org/bpf/ZwyG8Uro%2FSyTXAni@ly-workstation/
Fixes:
|
||
|
Linus Torvalds
|
6efbea77b3 |
arm64 fixes for -rc4
- Disable software tag-based KASAN when compiling with GCC, as functions are incorrectly instrumented leading to a crash early during boot. - Fix pkey configuration for kernel threads when POE is enabled. - Fix invalid memory accesses in uprobes when targetting load-literal instructions. -----BEGIN PGP SIGNATURE----- iQFEBAABCgAuFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAmcPrzQQHHdpbGxAa2Vy bmVsLm9yZwAKCRC3rHDchMFjNIr6B/wN+o1xI7Fv/QdlaTuKYLvOOg/XTl6sbUDj YssxtjhpKuaFVG4zJHNsWvgUqO+YCM7m3F1L8LVPMF7l2xoKtRTIB1Ye315hTjYm dW5Te6xBMVKF8SVxE8sBbZobdokIW1JNPBrvGvHO3d5ujmofzwHU8RNMXuTUItRw z85Qy75FkEDTEbsWhS3VL5HOgEr+k0TYDRa8SXwKWVj7/rYna3tO39kIdS5dt9VX wDJbnxtWJMhiHmDnevFFhBkSZrips12P1Rb6HUSmhpUJh0Rk4TAZntSl2f/lr+jA PuboBbSG68UOCwAHoNmTcLdFhkiNaiyw4w2F7hk2A6aNRtme+bT0 =M/ug -----END PGP SIGNATURE----- Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Will Deacon: - Disable software tag-based KASAN when compiling with GCC, as functions are incorrectly instrumented leading to a crash early during boot - Fix pkey configuration for kernel threads when POE is enabled - Fix invalid memory accesses in uprobes when targetting load-literal instructions * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: kasan: Disable Software Tag-Based KASAN with GCC Documentation/protection-keys: add AArch64 to documentation arm64: set POR_EL0 for kernel threads arm64: probes: Fix uprobes for big-endian kernels arm64: probes: Fix simulate_ldr*_literal() arm64: probes: Remove broken LDR (literal) uprobe support |
||
|
Lorenzo Stoakes
|
bea07fd631 |
maple_tree: correct tree corruption on spanning store
Patch series "maple_tree: correct tree corruption on spanning store", v3. There has been a nasty yet subtle maple tree corruption bug that appears to have been in existence since the inception of the algorithm. This bug seems far more likely to happen since commit |
||
|
Sidhartha Kumar
|
a6e0ceb7bf |
maple_tree: check for MA_STATE_BULK on setting wr_rebalance
It is possible for a bulk operation (MA_STATE_BULK is set) to enter the
new_end < mt_min_slots[type] case and set wr_rebalance as a store type.
This is incorrect as bulk stores do not rebalance per write, but rather
after the all of the writes are done through the mas_bulk_rebalance()
path. Therefore, add a check to make sure MA_STATE_BULK is not set before
we return wr_rebalance as the store type.
Also add a test to make sure wr_rebalance is never the store type when
doing bulk operations via mas_expected_entries()
This is a hotfix for this rc however it has no userspace effects as there
are no users of the bulk insertion mode.
Link: https://lkml.kernel.org/r/20241011214451.7286-1-sidhartha.kumar@oracle.com
Fixes:
|
||
|
Florian Westphal
|
dc783ba4b9 |
lib: alloc_tag_module_unload must wait for pending kfree_rcu calls
Ben Greear reports following splat:
------------[ cut here ]------------
net/netfilter/nf_nat_core.c:1114 module nf_nat func:nf_nat_register_fn has 256 allocated at module unload
WARNING: CPU: 1 PID: 10421 at lib/alloc_tag.c:168 alloc_tag_module_unload+0x22b/0x3f0
Modules linked in: nf_nat(-) btrfs ufs qnx4 hfsplus hfs minix vfat msdos fat
...
Hardware name: Default string Default string/SKYBAY, BIOS 5.12 08/04/2020
RIP: 0010:alloc_tag_module_unload+0x22b/0x3f0
codetag_unload_module+0x19b/0x2a0
? codetag_load_module+0x80/0x80
nf_nat module exit calls kfree_rcu on those addresses, but the free
operation is likely still pending by the time alloc_tag checks for leaks.
Wait for outstanding kfree_rcu operations to complete before checking
resolves this warning.
Reproducer:
unshare -n iptables-nft -t nat -A PREROUTING -p tcp
grep nf_nat /proc/allocinfo # will list 4 allocations
rmmod nft_chain_nat
rmmod nf_nat # will WARN.
[akpm@linux-foundation.org: add comment]
Link: https://lkml.kernel.org/r/20241007205236.11847-1-fw@strlen.de
Fixes:
|
||
|
Qianqiang Liu
|
cd843399d7 |
crypto: lib/mpi - Fix an "Uninitialized scalar variable" issue
The "err" variable may be returned without an initialized value.
Fixes:
|
||
|
Thomas Gleixner
|
ff8d523cc4 |
debugobjects: Track object usage to avoid premature freeing of objects
The freelist is freed at a constant rate independent of the actual usage requirements. That's bad in scenarios where usage comes in bursts. The end of a burst puts the objects on the free list and freeing proceeds even when the next burst which requires objects started again. Keep track of the usage with a exponentially wheighted moving average and take that into account in the worker function which frees objects from the free list. This further reduces the kmem_cache allocation/free rate for a full kernel compile: kmem_cache_alloc() kmem_cache_free() Baseline: 225k 173k Usage: 170k 117k Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/87bjznhme2.ffs@tglx |
||
|
Thomas Gleixner
|
13f9ca7239 |
debugobjects: Refill per CPU pool more agressively
Right now the per CPU pools are only refilled when they become empty. That's suboptimal especially when there are still non-freed objects in the to free list. Check whether an allocation from the per CPU pool emptied a batch and try to allocate from the free pool if that still has objects available. kmem_cache_alloc() kmem_cache_free() Baseline: 295k 245k Refill: 225k 173k Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164914.439053085@linutronix.de |
||
|
Thomas Gleixner
|
a201a96b96 |
debugobjects: Double the per CPU slots
In situations where objects are rapidly allocated from the pool and handed
back, the size of the per CPU pool turns out to be too small.
Double the size of the per CPU pool.
This reduces the kmem cache allocation and free operations during a kernel compile:
alloc free
Baseline: 380k 330k
Double size: 295k 245k
Especially the reduction of allocations is important because that happens
in the hot path when objects are initialized.
The maximum increase in per CPU pool memory consumption is about 2.5K per
online CPU, which is acceptable.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/all/20241007164914.378676302@linutronix.de
|
||
|
Thomas Gleixner
|
2638345d22 |
debugobjects: Move pool statistics into global_pool struct
Keep it along with the pool as that's a hot cache line anyway and it makes the code more comprehensible. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164914.318776207@linutronix.de |
||
|
Thomas Gleixner
|
f57ebb92ba |
debugobjects: Implement batch processing
Adding and removing single objects in a loop is bad in terms of lock contention and cache line accesses. To implement batching, record the last object in a batch in the object itself. This is trivialy possible as hlists are strictly stacks. At a batch boundary, when the first object is added to the list the object stores a pointer to itself in debug_obj::batch_last. When the next object is added to the list then the batch_last pointer is retrieved from the first object in the list and stored in the to be added one. That means for batch processing the first object always has a pointer to the last object in a batch, which allows to move batches in a cache line efficient way and reduces the lock held time. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164914.258995000@linutronix.de |
||
|
Thomas Gleixner
|
aebbfe0779 |
debugobjects: Prepare kmem_cache allocations for batching
Allocate a batch and then push it into the pool. Utilize the debug_obj::last_node pointer for keeping track of the batch boundary. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20241007164914.198647184@linutronix.de |
||
|
Thomas Gleixner
|
74fe1ad413 |
debugobjects: Prepare for batching
Move the debug_obj::object pointer into a union and add a pointer to the last node in a batch. That allows to implement batch processing efficiently by utilizing the stack property of hlist: When the first object of a batch is added to the list, then the batch pointer is set to the hlist node of the object itself. Any subsequent add retrieves the pointer to the last node from the first object in the list and uses that for storing the last node pointer in the newly added object. Add the pointer to the data structure and ensure that all relevant pool sizes are strictly batch sized. The actual batching implementation follows in subsequent changes. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164914.139204961@linutronix.de |
||
|
Thomas Gleixner
|
14077b9e58 |
debugobjects: Use static key for boot pool selection
Get rid of the conditional in the hot path. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164914.077247071@linutronix.de |
||
|
Thomas Gleixner
|
9ce99c6d7b |
debugobjects: Rework free_object_work()
Convert it to batch processing with intermediate helper functions. This reduces the final changes for batch processing. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164914.015906394@linutronix.de |
||
|
Thomas Gleixner
|
a3b9e191f5 |
debugobjects: Rework object freeing
__free_object() is uncomprehensibly complex. The same can be achieved by:
1) Adding the object to the per CPU pool
2) If that pool is full, move a batch of objects into the global pool
or if the global pool is full into the to free pool
This also prepares for batch processing.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/all/20241007164913.955542307@linutronix.de
|
||
|
Thomas Gleixner
|
fb60c004f3 |
debugobjects: Rework object allocation
The current allocation scheme tries to allocate from the per CPU pool first. If that fails it allocates one object from the global pool and then refills the per CPU pool from the global pool. That is in the way of switching the pool management to batch mode as the global pool needs to be a strict stack of batches, which does not allow to allocate single objects. Rework the code to refill the per CPU pool first and then allocate the object from the refilled batch. Also try to allocate from the to free pool first to avoid freeing and reallocating objects. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164913.893554162@linutronix.de |
||
|
Thomas Gleixner
|
96a9a0421c |
debugobjects: Move min/max count into pool struct
Having the accounting in the datastructure is better in terms of cache lines and allows more optimizations later on. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164913.831908427@linutronix.de |
||
|
Thomas Gleixner
|
18b8afcb37 |
debugobjects: Rename and tidy up per CPU pools
No point in having a separate data structure. Reuse struct obj_pool and tidy up the code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164913.770595795@linutronix.de |
||
|
Thomas Gleixner
|
cb58d19084 |
debugobjects: Use separate list head for boot pool
There is no point to handle the statically allocated objects during early boot in the actual pool list. This phase does not require accounting, so all of the related complexity can be avoided. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164913.708939081@linutronix.de |
||
|
Thomas Gleixner
|
e18328ff70 |
debugobjects: Move pools into a datastructure
The contention on the global pool lock can be reduced by strict batch processing where batches of objects are moved from one list head to another instead of moving them object by object. This also reduces the cache footprint because it avoids the list walk and dirties at maximum three cache lines instead of potentially up to eighteen. To prepare for that, move the hlist head and related counters into a struct. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164913.646171170@linutronix.de |
||
|
Zhen Lei
|
d8c6cd3a5c |
debugobjects: Reduce parallel pool fill attempts
The contention on the global pool_lock can be massive when the global pool
needs to be refilled and many CPUs try to handle this.
Address this by:
- splitting the refill from free list and allocation.
Refill from free list has no constraints vs. the context on RT, so
it can be tried outside of the RT specific preemptible() guard
- Let only one CPU handle the free list
- Let only one CPU do allocations unless the pool level is below
half of the minimum fill level.
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20240911083521.2257-4-thunder.leizhen@huawei.com-
Link: https://lore.kernel.org/all/20241007164913.582118421@linutronix.de
--
lib/debugobjects.c | 84 +++++++++++++++++++++++++++++++++++++----------------
1 file changed, 59 insertions(+), 25 deletions(-)
|
||
|
Thomas Gleixner
|
661cc28b52 |
debugobjects: Make debug_objects_enabled bool
Make it what it is. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164913.518175013@linutronix.de |
||
|
Thomas Gleixner
|
49a5cb827d |
debugobjects: Provide and use free_object_list()
Move the loop to free a list of objects into a helper function so it can be reused later. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20241007164913.453912357@linutronix.de |
||
|
Thomas Gleixner
|
241463f4fd |
debugobjects: Remove pointless debug printk
It has zero value. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164913.390511021@linutronix.de |
||
|
Thomas Gleixner
|
49968cf181 |
debugobjects: Reuse put_objects() on OOM
Reuse the helper function instead of having a open coded copy. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164913.326834268@linutronix.de |
||
|
Thomas Gleixner
|
a2a702383e |
debugobjects: Dont free objects directly on CPU hotplug
Freeing the per CPU pool of the unplugged CPU directly is suboptimal as the objects can be reused in the real pool if there is room. Aside of that this gets the accounting wrong. Use the regular free path, which allows reuse and has the accounting correct. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164913.263960570@linutronix.de |
||
|
Thomas Gleixner
|
3f397bf955 |
debugobjects: Remove pointless hlist initialization
It's BSS zero initialized. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/all/20241007164913.200379308@linutronix.de |
||
|
Thomas Gleixner
|
55fb412ef7 |
debugobjects: Dont destroy kmem cache in init()
debug_objects_mem_init() is invoked from mm_core_init() before work queues are available. If debug_objects_mem_init() destroys the kmem cache in the error path it causes an Oops in __queue_work(): Oops: Oops: 0000 [#1] PREEMPT SMP PTI RIP: 0010:__queue_work+0x35/0x6a0 queue_work_on+0x66/0x70 flush_all_cpus_locked+0xdf/0x1a0 __kmem_cache_shutdown+0x2f/0x340 kmem_cache_destroy+0x4e/0x150 mm_core_init+0x9e/0x120 start_kernel+0x298/0x800 x86_64_start_reservations+0x18/0x30 x86_64_start_kernel+0xc5/0xe0 common_startup_64+0x12c/0x138 Further the object cache pointer is used in various places to check for early boot operation. It is exposed before the replacments for the static boot time objects are allocated and the self test operates on it. This can be avoided by: 1) Running the self test with the static boot objects 2) Exposing it only after the replacement objects have been added to the pool. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20241007164913.137021337@linutronix.de |
||
|
Zhen Lei
|
813fd07858 |
debugobjects: Collect newly allocated objects in a list to reduce lock contention
Collect the newly allocated debug objects in a list outside the lock, so that the lock held time and the potential lock contention is reduced. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240911083521.2257-3-thunder.leizhen@huawei.com Link: https://lore.kernel.org/all/20241007164913.073653668@linutronix.de |
||
|
Zhen Lei
|
a0ae950408 |
debugobjects: Delete a piece of redundant code
The statically allocated objects are all located in obj_static_pool[], the whole memory of obj_static_pool[] will be reclaimed later. Therefore, there is no need to split the remaining statically nodes in list obj_pool into isolated ones, no one will use them anymore. Just write INIT_HLIST_HEAD(&obj_pool) is enough. Since hlist_move_list() directly discards the old list, even this can be omitted. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240911083521.2257-2-thunder.leizhen@huawei.com Link: https://lore.kernel.org/all/20241007164913.009849239@linutronix.de |
||
|
Will Deacon
|
7aed6a2c51 |
kasan: Disable Software Tag-Based KASAN with GCC
Syzbot reports a KASAN failure early during boot on arm64 when building with GCC 12.2.0 and using the Software Tag-Based KASAN mode: | BUG: KASAN: invalid-access in smp_build_mpidr_hash arch/arm64/kernel/setup.c:133 [inline] | BUG: KASAN: invalid-access in setup_arch+0x984/0xd60 arch/arm64/kernel/setup.c:356 | Write of size 4 at addr 03ff800086867e00 by task swapper/0 | Pointer tag: [03], memory tag: [fe] Initial triage indicates that the report is a false positive and a thorough investigation of the crash by Mark Rutland revealed the root cause to be a bug in GCC: > When GCC is passed `-fsanitize=hwaddress` or > `-fsanitize=kernel-hwaddress` it ignores > `__attribute__((no_sanitize_address))`, and instruments functions > we require are not instrumented. > > [...] > > All versions [of GCC] I tried were broken, from 11.3.0 to 14.2.0 > inclusive. > > I think we have to disable KASAN_SW_TAGS with GCC until this is > fixed Disable Software Tag-Based KASAN when building with GCC by making CC_HAS_KASAN_SW_TAGS depend on !CC_IS_GCC. Cc: Andrey Konovalov <andreyknvl@gmail.com> Suggested-by: Mark Rutland <mark.rutland@arm.com> Reported-by: syzbot+908886656a02769af987@syzkaller.appspotmail.com Link: https://lore.kernel.org/r/000000000000f362e80620e27859@google.com Link: https://lore.kernel.org/r/ZvFGwKfoC4yVjN_X@J2N7QTR9R3 Link: https://bugzilla.kernel.org/show_bug.cgi?id=218854 Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20241014161100.18034-1-will@kernel.org Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Rob Herring (Arm)
|
6ba55951e7 |
logic_pio: Constify fwnode_handle
The fwnode_handle passed into find_io_range_by_fwnode() and logic_pio_trans_hwaddr() are not modified, so make them const. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20241010-dt-const-v1-2-87a51f558425@kernel.org Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
||
|
Zijun Hu
|
9bd133f05b |
lib: devres: Simplify API devm_ioport_unmap() implementation
Simplify devm_ioport_unmap() implementation by dedicated API devres_release(), compared with current solution, namely ioport_unmap() + devres_destroy(), devres_release() has below advantages: - it is simpler if devm_ioport_unmap()'s parameter @addr was ever returned by devm_ioport_map(). - it can avoid unnecessary ioport_unmap(@addr) if @addr was not ever returned by devm_ioport_map(). Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Link: https://lore.kernel.org/r/20240918-fix_lib_devres-v1-2-e696ab5486e6@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Zijun Hu
|
0ee4dcafda |
lib: devres: Simplify API devm_iounmap() implementation
Simplify devm_iounmap() implementation by dedicated API devres_release() compared with current solution, namely, devres_destroy() + iounmap() devres_release() has the following advantages: - it is simpler if devm_iounmap()'s parameter @addr is valid, namely @addr was ever returned by one of devm_ioremap() variants. - it can avoid unnecessary iounmap(@addr) if @addr is not valid. Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Link: https://lore.kernel.org/r/20240918-fix_lib_devres-v1-1-e696ab5486e6@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Jakub Kicinski
|
9c0fc36ec4 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.12-rc3). No conflicts and no adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Vladimir Oltean
|
1405981bbb |
lib: packing: catch kunit_kzalloc() failure in the pack() test
kunit_kzalloc() may fail. Other call sites verify that this is the case,
either using a direct comparison with the NULL pointer, or the
KUNIT_ASSERT_NOT_NULL() or KUNIT_ASSERT_NOT_ERR_OR_NULL().
Pick KUNIT_ASSERT_NOT_NULL() as the error handling method that made most
sense to me. It's an unlikely thing to happen, but at least we call
__kunit_abort() instead of dereferencing this NULL pointer.
Fixes:
|
||
|
Timo Grautstueck
|
ab8851431b |
lib/Kconfig.debug: fix grammar in RUST_BUILD_ASSERT_ALLOW
Just a grammar fix in lib/Kconfig.debug, under the config option
RUST_BUILD_ASSERT_ALLOW.
Reported-by: Miguel Ojeda <ojeda@kernel.org>
Closes: https://github.com/Rust-for-Linux/linux/issues/1006
Fixes:
|
||
|
Qianqiang Liu
|
6100da511b |
crypto: lib/mpi - Fix an "Uninitialized scalar variable" issue
The "err" variable may be returned without an initialized value.
Fixes:
|
||
|
Linus Torvalds
|
f6785e0ccf |
slab fixes for 6.12-rc1
-----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEe7vIQRWZI0iWSE3xu+CwddJFiJoFAmb/8bcACgkQu+CwddJF iJoApwf5AWWhKFbbYwFUCXDi7+/Xr7T7c9H9q+GAEOQiDLsDxihEAo1KYQ+DLl+h Vp1ddRYIKMIUfllW3bcD4O6C8L46OX3XPHhTHnksEfvtn3fQGjcU3jKH8n0eL01J s9eUdvduNSJorAWqjFPPRrGuLJTXmervrDYYPJLaXGITHHMOxMjKfLAxtXehvARv mVQV1F0NTvvNqieuibUCM5XqJs37lrmqB39pLun7bQDU48z4OR1L3nkJxTFF1bGm EcvAPayTiNybMt08QSVHIwqfSs+e0HmyKqjvSLpJPImDrfSrWOJvBCJxI4DU+1aw UiHyWYLaxWZ7DoJgtZuHV2//8wOWww== =EXEA -----END PGP SIGNATURE----- Merge tag 'slab-for-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab Pull slab fixes from Vlastimil Babka: "Fixes for issues introduced in this merge window: kobject memory leak, unsupressed warning and possible lockup in new slub_kunit tests, misleading code in kvfree_rcu_queue_batch()" * tag 'slab-for-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: slub/kunit: skip test_kfree_rcu when the slub kunit test is built-in mm, slab: suppress warnings in test_leak_destroy kunit test rcu/kvfree: Refactor kvfree_rcu_queue_batch() mm, slab: fix use of SLAB_SUPPORTS_SYSFS in kmem_cache_release() |
||
|
Vladimir Oltean
|
46e784e94b |
lib: packing: use GENMASK() for box_mask
This is an u8, so using GENMASK_ULL() for unsigned long long is unnecessary. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://patch.msgid.link/20241002-packing-kunit-tests-and-split-pack-unpack-v2-10-8373e551eae3@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Vladimir Oltean
|
fb02c7c8a5 |
lib: packing: use BITS_PER_BYTE instead of 8
This helps clarify what the 8 is for. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20241002-packing-kunit-tests-and-split-pack-unpack-v2-9-8373e551eae3@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jacob Keller
|
e7fdf5dddc |
lib: packing: fix QUIRK_MSB_ON_THE_RIGHT behavior
The QUIRK_MSB_ON_THE_RIGHT quirk is intended to modify pack() and unpack()
so that the most significant bit of each byte in the packed layout is on
the right.
The way the quirk is currently implemented is broken whenever the packing
code packs or unpacks any value that is not exactly a full byte.
The broken behavior can occur when packing any values smaller than one
byte, when packing any value that is not exactly a whole number of bytes,
or when the packing is not aligned to a byte boundary.
This quirk is documented in the following way:
1. Normally (no quirks), we would do it like this:
::
63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32
7 6 5 4
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
3 2 1 0
<snip>
2. If QUIRK_MSB_ON_THE_RIGHT is set, we do it like this:
::
56 57 58 59 60 61 62 63 48 49 50 51 52 53 54 55 40 41 42 43 44 45 46 47 32 33 34 35 36 37 38 39
7 6 5 4
24 25 26 27 28 29 30 31 16 17 18 19 20 21 22 23 8 9 10 11 12 13 14 15 0 1 2 3 4 5 6 7
3 2 1 0
That is, QUIRK_MSB_ON_THE_RIGHT does not affect byte positioning, but
inverts bit offsets inside a byte.
Essentially, the mapping for physical bit offsets should be reserved for a
given byte within the payload. This reversal should be fixed to the bytes
in the packing layout.
The logic to implement this quirk is handled within the
adjust_for_msb_right_quirk() function. This function does not work properly
when dealing with the bytes that contain only a partial amount of data.
In particular, consider trying to pack or unpack the range 53-44. We should
always be mapping the bits from the logical ordering to their physical
ordering in the same way, regardless of what sequence of bits we are
unpacking.
This, we should grab the following logical bits:
Logical: 55 54 53 52 51 50 49 48 47 45 44 43 42 41 40 39
^ ^ ^ ^ ^ ^ ^ ^ ^
And pack them into the physical bits:
Physical: 48 49 50 51 52 53 54 55 40 41 42 43 44 45 46 47
Logical: 48 49 50 51 52 53 44 45 46 47
^ ^ ^ ^ ^ ^ ^ ^ ^ ^
The current logic in adjust_for_msb_right_quirk is broken. I believe it is
intending to map according to the following:
Physical: 48 49 50 51 52 53 54 55 40 41 42 43 44 45 46 47
Logical: 48 49 50 51 52 53 44 45 46 47
^ ^ ^ ^ ^ ^ ^ ^ ^ ^
That is, it tries to keep the bits at the start and end of a packing
together. This is wrong, as it makes the packing change what bit is being
mapped to what based on which bits you're currently packing or unpacking.
Worse, the actual calculations within adjust_for_msb_right_quirk don't make
sense.
Consider the case when packing the last byte of an unaligned packing. It
might have a start bit of 7 and an end bit of 5. This would have a width of
3 bits. The new_start_bit will be calculated as the width - the box_end_bit
- 1. This will underflow and produce a negative value, which will
ultimate result in generating a new box_mask of all 0s.
For any other values, the result of the calculations of the
new_box_end_bit, new_box_start_bit, and the new box_mask will result in the
exact same values for the box_end_bit, box_start_bit, and box_mask. This
makes the calculations completely irrelevant.
If box_end_bit is 0, and box_start_bit is 7, then the entire function of
adjust_for_msb_right_quirk will boil down to just:
*to_write = bitrev8(*to_write)
The other adjustments are attempting (incorrectly) to keep the bits in the
same place but just reversed. This is not the right behavior even if
implemented correctly, as it leaves the mapping dependent on the bit values
being packed or unpacked.
Remove adjust_for_msb_right_quirk() and just use bitrev8 to reverse the
byte order when interacting with the packed data.
In particular, for packing, we need to reverse both the box_mask and the
physical value being packed. This is done after shifting the value by
box_end_bit so that the reversed mapping is always aligned to the physical
buffer byte boundary. The box_mask is reversed as we're about to use it to
clear any stale bits in the physical buffer at this block.
For unpacking, we need to reverse the contents of the physical buffer
*before* masking with the box_mask. This is critical, as the box_mask is a
logical mask of the bit layout before handling the QUIRK_MSB_ON_THE_RIGHT.
Add several new tests which cover this behavior. These tests will fail
without the fix and pass afterwards. Note that no current drivers make use
of QUIRK_MSB_ON_THE_RIGHT. I suspect this is why there have been no reports
of this inconsistency before.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Link: https://patch.msgid.link/20241002-packing-kunit-tests-and-split-pack-unpack-v2-8-8373e551eae3@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
|
Jacob Keller
|
fcd6dd91d0 |
lib: packing: add additional KUnit tests
While reviewing the initial KUnit tests for lib/packing, Przemek pointed out that the test values have duplicate bytes in the input sequence. In addition, I noticed that the unit tests pack and unpack on a byte boundary, instead of crossing bytes. Thus, we lack good coverage of the corner cases of the API. Add additional unit tests to cover packing and unpacking byte buffers which do not have duplicate bytes in the unpacked value, and which pack and unpack to an unaligned offset. A careful reviewer may note the lack tests for QUIRK_MSB_ON_THE_RIGHT. This is because I found issues with that quirk during test implementation. This quirk will be fixed and the tests will be included in a future change. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Link: https://patch.msgid.link/20241002-packing-kunit-tests-and-split-pack-unpack-v2-7-8373e551eae3@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jacob Keller
|
e9502ea6db |
lib: packing: add KUnit tests adapted from selftests
Add 24 simple KUnit tests for the lib/packing.c pack() and unpack() APIs. The first 16 tests exercise all combinations of quirks with a simple magic number value on a 16-byte buffer. The remaining 8 tests cover non-multiple-of-4 buffer sizes. These tests were originally written by Vladimir as simple selftest functions. I adapted them to KUnit, refactoring them into a table driven approach. This will aid in adding additional tests in the future. Co-developed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20241002-packing-kunit-tests-and-split-pack-unpack-v2-6-8373e551eae3@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Vladimir Oltean
|
28aec9ca29 |
lib: packing: duplicate pack() and unpack() implementations
packing() is now used in some hot paths, and it would be good to get rid of some ifs and buts that depend on "op", to speed things up a little bit. With the main implementations now taking size_t endbit, we no longer have to check for negative values. Update the local integer variables to also be size_t to match. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20241002-packing-kunit-tests-and-split-pack-unpack-v2-5-8373e551eae3@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Vladimir Oltean
|
7263f64e16 |
lib: packing: add pack() and unpack() wrappers over packing()
Geert Uytterhoeven described packing() as "really bad API" because of not being able to enforce const correctness. The same function is used both when "pbuf" is input and "uval" is output, as in the other way around. Create 2 wrapper functions where const correctness can be ensured. Do ugly type casts inside, to be able to reuse packing() as currently implemented - which will _not_ modify the input argument. Also, take the opportunity to change the type of startbit and endbit to size_t - an unsigned type - in these new function prototypes. When int, an extra check for negative values is necessary. Hopefully, when packing() goes away completely, that check can be dropped. My concern is that code which does rely on the conditional directionality of packing() is harder to refactor without blowing up in size. So it may take a while to completely eliminate packing(). But let's make alternatives available for those who do not need that. Link: https://lore.kernel.org/netdev/20210223112003.2223332-1-geert+renesas@glider.be/ Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20241002-packing-kunit-tests-and-split-pack-unpack-v2-4-8373e551eae3@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Vladimir Oltean
|
a636ba5e86 |
lib: packing: adjust definitions and implementation for arbitrary buffer lengths
Jacob Keller has a use case for packing() in the intel/ice networking driver, but it cannot be used as-is. Simply put, the API quirks for LSW32_IS_FIRST and LITTLE_ENDIAN are naively implemented with the undocumented assumption that the buffer length must be a multiple of 4. All calculations of group offsets and offsets of bytes within groups assume that this is the case. But in the ice case, this does not hold true. For example, packing into a buffer of 22 bytes would yield wrong results, but pretending it was a 24 byte buffer would work. Rather than requiring such hacks, and leaving a big question mark when it comes to discontinuities in the accessible bit fields of such buffer, we should extend the packing API to support this use case. It turns out that we can keep the design in terms of groups of 4 bytes, but also make it work if the total length is not a multiple of 4. Just like before, imagine the buffer as a big number, and its most significant bytes (the ones that would make up to a multiple of 4) are missing. Thus, with a big endian (no quirks) interpretation of the buffer, those most significant bytes would be absent from the beginning of the buffer, and with a LSW32_IS_FIRST interpretation, they would be absent from the end of the buffer. The LITTLE_ENDIAN quirk, in the packing() API world, only affects byte ordering within groups of 4. Thus, it does not change which bytes are missing. Only the significance of the remaining bytes within the (smaller) group. No change intended for buffer sizes which are multiples of 4. Tested with the sja1105 driver and with downstream unit tests. Link: https://lore.kernel.org/netdev/a0338310-e66c-497c-bc1f-a597e50aa3ff@intel.com/ Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Tested-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20241002-packing-kunit-tests-and-split-pack-unpack-v2-2-8373e551eae3@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Vladimir Oltean
|
8b3e26677b |
lib: packing: refuse operating on bit indices which exceed size of buffer
While reworking the implementation, it became apparent that this check does not exist. There is no functional issue yet, because at call sites, "startbit" and "endbit" are always hardcoded to correct values, and never come from the user. Even with the upcoming support of arbitrary buffer lengths, the "startbit >= 8 * pbuflen" check will remain correct. This is because we intend to always interpret the packed buffer in a way that avoids discontinuities in the available bit indices. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Tested-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20241002-packing-kunit-tests-and-split-pack-unpack-v2-1-8373e551eae3@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Linus Torvalds
|
20c2474fa5 |
vfs-6.12-rc2.fixes.2
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Merge tag 'vfs-6.12-rc2.fixes.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
"vfs:
- Ensure that iter_folioq_get_pages() advances to the next slot
otherwise it will end up using the same folio with an out-of-bound
offset.
iomap:
- Dont unshare delalloc extents which can't be reflinked, and thus
can't be shared.
- Constrain the file range passed to iomap_file_unshare() directly in
iomap instead of requiring the callers to do it.
netfs:
- Use folioq_count instead of folioq_nr_slot to prevent an
unitialized value warning in netfs_clear_buffer().
- Fix missing wakeup after issuing writes by scheduling the write
collector only if all the subrequest queues are empty and thus no
writes are pending.
- Fix two minor documentation bugs"
* tag 'vfs-6.12-rc2.fixes.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
iomap: constrain the file range passed to iomap_file_unshare
iomap: don't bother unsharing delalloc extents
netfs: Fix missing wakeup after issuing writes
Documentation: add missing folio_queue entry
folio_queue: fix documentation
netfs: Fix a KMSAN uninit-value error in netfs_clear_buffer
iov_iter: fix advancing slot in iter_folioq_get_pages()
|
||
|
Uros Bizjak
|
0402779aae |
lib/test_scanf: Include <linux/prandom.h> instead of <linux/random.h>
Substitute the inclusion of <linux/random.h> header with <linux/prandom.h> to allow the removal of legacy inclusion of <linux/prandom.h> from <linux/random.h>. Signed-off-by: Uros Bizjak <ubizjak@gmail.com> Acked-by: Petr Mladek <pmladek@suse.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Uros Bizjak
|
1da74f9050 |
lib/test_parman: Include <linux/prandom.h> instead of <linux/random.h>
Substitute the inclusion of <linux/random.h> header with <linux/prandom.h> to allow the removal of legacy inclusion of <linux/prandom.h> from <linux/random.h>. Signed-off-by: Uros Bizjak <ubizjak@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Uros Bizjak
|
2e2fe47182 |
bpf/tests: Include <linux/prandom.h> instead of <linux/random.h>
Substitute the inclusion of <linux/random.h> header with <linux/prandom.h> to allow the removal of legacy inclusion of <linux/prandom.h> from <linux/random.h>. Signed-off-by: Uros Bizjak <ubizjak@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Martin KaFai Lau <martin.lau@linux.dev> Cc: Eduard Zingerman <eddyz87@gmail.com> Cc: Song Liu <song@kernel.org> Cc: Yonghong Song <yonghong.song@linux.dev> Cc: John Fastabend <john.fastabend@gmail.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Stanislav Fomichev <sdf@fomichev.me> Cc: Hao Luo <haoluo@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Uros Bizjak
|
a7e74510e0 |
lib/rbtree-test: Include <linux/prandom.h> instead of <linux/random.h>
Substitute the inclusion of <linux/random.h> header with <linux/prandom.h> to allow the removal of legacy inclusion of <linux/prandom.h> from <linux/random.h>. Signed-off-by: Uros Bizjak <ubizjak@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Uros Bizjak
|
baacb8b413 |
random32: Include <linux/prandom.h> instead of <linux/random.h>
Substitute the inclusion of <linux/random.h> header with <linux/prandom.h> to allow the removal of legacy inclusion of <linux/prandom.h> from <linux/random.h>. Signed-off-by: Uros Bizjak <ubizjak@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: David S. Miller <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Uros Bizjak
|
9127ad4242 |
kunit: string-stream-test: Include <linux/prandom.h>
Include <linux/random.h> header to allow the removal of legacy inclusion of <linux/prandom.h> from <linux/random.h>. Signed-off-by: Uros Bizjak <ubizjak@gmail.com> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: David Gow <davidgow@google.com> Cc: Rae Moar <rmoar@google.com> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Uros Bizjak
|
d46150d6fd |
lib/interval_tree_test.c: Include <linux/prandom.h> instead of <linux/random.h>
Substitute the inclusion of <linux/random.h> header with <linux/prandom.h> to allow the removal of legacy inclusion of <linux/prandom.h> from <linux/random.h>. Signed-off-by: Uros Bizjak <ubizjak@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Al Viro
|
5f60d5f6bb |
move asm/unaligned.h to linux/unaligned.h
asm/unaligned.h is always an include of asm-generic/unaligned.h; might as well move that thing to linux/unaligned.h and include that - there's nothing arch-specific in that header. auto-generated by the following: for i in `git grep -l -w asm/unaligned.h`; do sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i done for i in `git grep -l -w asm-generic/unaligned.h`; do sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i done git mv include/asm-generic/unaligned.h include/linux/unaligned.h git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h |
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|
Vlastimil Babka
|
cac39b0706 |
slub/kunit: skip test_kfree_rcu when the slub kunit test is built-in
Guenter Roeck reports that the new slub kunit tests added by commit |
||
|
Vlastimil Babka
|
3f1dd33f99 |
mm, slab: suppress warnings in test_leak_destroy kunit test
The test_leak_destroy kunit test intends to test the detection of stray
objects in kmem_cache_destroy(), which normally produces a warning. The
other slab kunit tests suppress the warnings in the kunit test context,
so suppress warnings and related printk output in this test as well.
Automated test running environments then don't need to learn to filter
the warnings.
Also rename the test's kmem_cache, the name was wrongly copy-pasted from
test_kfree_rcu.
Fixes:
|
||
|
Omar Sandoval
|
0d24852bd7
|
iov_iter: fix advancing slot in iter_folioq_get_pages()
iter_folioq_get_pages() decides to advance to the next folioq slot when
it has reached the end of the current folio. However, it is checking
offset, which is the beginning of the current part, instead of
iov_offset, which is adjusted to the end of the current part, so it
doesn't advance the slot when it's supposed to. As a result, on the next
iteration, we'll use the same folio with an out-of-bounds offset and
return an unrelated page.
This manifested as various crashes and other failures in 9pfs in drgn's
VM testing setup and BPF CI.
Fixes:
|
||
|
Linus Torvalds
|
9c44575c78 |
bitmap-for-6.12
- switch all bitmamp APIs from inline to __always_inline from Brian Norris; - introduce GENMASK_U128() macro from Anshuman Khandual; -----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEEi8GdvG6xMhdgpu/4sUSA/TofvsgFAmb22isACgkQsUSA/Tof vsie2gwAl3l5vye90xnD6N8wFmKBKAWXMn8Iby7JyM9gAn6j1QuE5AppS+3JtIpZ rPRSgFZIVPOgBtiKjb6zAWj7KbtCmaSW+L5ZVaLQ+vtwBVNpWIWHsHKu0uIpuugT 3wp/IeaE92bc/mioqb27pj2Gnv+lzYBmbK7Mu08a3q1Adwv0I7BJ4GvqxN1lLAEW xrFB86xztqdV7QC45J7Q5nIyUw7UBYK078elQ8iKSj5BR8MeaEJiavETwx9DHgAO Z8cG94ek3IpvLpiexNcgG+FTezZj9PnTVHxry9o7CIctafiqjYqXAJ9gks1Q4QUu q1IjPAdueLTAMPkpK67sI3fwC6zPyX5d8DVDUTuA6qhCsMyHW687gTRy4LPR14LL gd1Tzg+J9DQ5KBoG4TYN/g5VoP1hkKQqpetaJhdPqmYocfmqZuzyItb+gBjhyvSp 3YOgLg/4lULy3sZ6Qd/q8CWglWlaNYXXzf13H8f2qUpVx4NLTDOwjj/CVjZR/D0C wje/8XU3 =8jNc -----END PGP SIGNATURE----- Merge tag 'bitmap-for-6.12' of https://github.com/norov/linux Pull bitmap updates from Yury Norov: - switch all bitmamp APIs from inline to __always_inline (Brian Norris) The __always_inline series improves on code generation, and now with the latest compiler versions is required to avoid compilation warnings. It spent enough in my backlog, and I'm thankful to Brian Norris for taking over and moving it forward. - introduce GENMASK_U128() macro (Anshuman Khandual) GENMASK_U128() is a prerequisite needed for arm64 development * tag 'bitmap-for-6.12' of https://github.com/norov/linux: lib/test_bits.c: Add tests for GENMASK_U128() uapi: Define GENMASK_U128 nodemask: Switch from inline to __always_inline cpumask: Switch from inline to __always_inline bitmap: Switch from inline to __always_inline find: Switch from inline to __always_inline |
||
|
Linus Torvalds
|
eee280841e |
19 hotfixes. 13 are cc:stable.
There's a focus on fixes for the memfd_pin_folios() work which was added into 6.11. Apart from that, the usual shower of singleton fixes. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZvbhSAAKCRDdBJ7gKXxA jp8CAP47txk2c+tBLggog2MkQamADY5l5MT6E3fYq3ghSiKtVQEAnqX3LiQJ02tB o9LcPcVrM90QntpKrLP1CpWCVdR+zA8= =e0QC -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2024-09-27-09-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "19 hotfixes. 13 are cc:stable. There's a focus on fixes for the memfd_pin_folios() work which was added into 6.11. Apart from that, the usual shower of singleton fixes" * tag 'mm-hotfixes-stable-2024-09-27-09-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: ocfs2: fix uninit-value in ocfs2_get_block() zram: don't free statically defined names memory tiers: use default_dram_perf_ref_source in log message Revert "list: test: fix tests for list_cut_position()" kselftests: mm: fix wrong __NR_userfaultfd value compiler.h: specify correct attribute for .rodata..c_jump_table mm/damon/Kconfig: update DAMON doc URL mm: kfence: fix elapsed time for allocated/freed track ocfs2: fix deadlock in ocfs2_get_system_file_inode ocfs2: reserve space for inline xattr before attaching reflink tree mm: migrate: annotate data-race in migrate_folio_unmap() mm/hugetlb: simplify refs in memfd_alloc_folio mm/gup: fix memfd_pin_folios alloc race panic mm/gup: fix memfd_pin_folios hugetlb page allocation mm/hugetlb: fix memfd_pin_folios resv_huge_pages leak mm/hugetlb: fix memfd_pin_folios free_huge_pages leak mm/filemap: fix filemap_get_folios_contig THP panic mm: make SPLIT_PTE_PTLOCKS depend on SMP tools: fix shared radix-tree build |
||
|
Guenter Roeck
|
c509f67df3 |
Revert "list: test: fix tests for list_cut_position()"
This reverts commit |
||
|
Linus Torvalds
|
11a299a793 |
for-6.12/block-20240925
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Merge tag 'for-6.12/block-20240925' of git://git.kernel.dk/linux
Pull more block updates from Jens Axboe:
- Improve blk-integrity segment counting and merging (Keith)
- NVMe pull request via Keith:
- Multipath fixes (Hannes)
- Sysfs attribute list NULL terminate fix (Shin'ichiro)
- Remove problematic read-back (Keith)
- Fix for a regression with the IO scheduler switching freezing from
6.11 (Damien)
- Use a raw spinlock for sbitmap, as it may get called from preempt
disabled context (Ming)
- Cleanup for bd_claiming waiting, using var_waitqueue() rather than
the bit waitqueues, as that more accurately describes that it does
(Neil)
- Various cleanups (Kanchan, Qiu-ji, David)
* tag 'for-6.12/block-20240925' of git://git.kernel.dk/linux:
nvme: remove CC register read-back during enabling
nvme: null terminate nvme_tls_attrs
nvme-multipath: avoid hang on inaccessible namespaces
nvme-multipath: system fails to create generic nvme device
lib/sbitmap: define swap_lock as raw_spinlock_t
block: Remove unused blk_limits_io_{min,opt}
drbd: Fix atomicity violation in drbd_uuid_set_bm()
block: Fix elv_iosched_local_module handling of "none" scheduler
block: remove bogus union
block: change wait on bd_claiming to use a var_waitqueue
blk-integrity: improved sg segment mapping
block: unexport blk_rq_count_integrity_sg
nvme-rdma: use request to get integrity segments
scsi: use request to get integrity segments
block: provide a request helper for user integrity segments
blk-integrity: consider entire bio list for merging
blk-integrity: properly account for segments
blk-mq: set the nr_integrity_segments from bio
blk-mq: unconditional nr_integrity_segments
|
||
|
Linus Torvalds
|
68e5c7d4ce |
Kbuild updates for v6.12
- Support cross-compiling linux-headers Debian package and kernel-devel
RPM package
- Add support for the linux-debug Pacman package
- Improve module rebuilding speed by factoring out the common code to
scripts/module-common.c
- Separate device tree build rules into scripts/Makefile.dtbs
- Add a new script to generate modules.builtin.ranges, which is useful
for tracing tools to find symbols in built-in modules
- Refactor Kconfig and misc tools
- Update Kbuild and Kconfig documentation
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Merge tag 'kbuild-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Support cross-compiling linux-headers Debian package and kernel-devel
RPM package
- Add support for the linux-debug Pacman package
- Improve module rebuilding speed by factoring out the common code to
scripts/module-common.c
- Separate device tree build rules into scripts/Makefile.dtbs
- Add a new script to generate modules.builtin.ranges, which is useful
for tracing tools to find symbols in built-in modules
- Refactor Kconfig and misc tools
- Update Kbuild and Kconfig documentation
* tag 'kbuild-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (51 commits)
kbuild: doc: replace "gcc" in external module description
kbuild: doc: describe the -C option precisely for external module builds
kbuild: doc: remove the description about shipped files
kbuild: doc: drop section numbering, use references in modules.rst
kbuild: doc: throw out the local table of contents in modules.rst
kbuild: doc: remove outdated description of the limitation on -I usage
kbuild: doc: remove description about grepping CONFIG options
kbuild: doc: update the description about Kbuild/Makefile split
kbuild: remove unnecessary export of RUST_LIB_SRC
kbuild: remove append operation on cmd_ld_ko_o
kconfig: cache expression values
kconfig: use hash table to reuse expressions
kconfig: refactor expr_eliminate_dups()
kconfig: add comments to expression transformations
kconfig: change some expr_*() functions to bool
scripts: move hash function from scripts/kconfig/ to scripts/include/
kallsyms: change overflow variable to bool type
kallsyms: squash output_address()
kbuild: add install target for modules.builtin.ranges
scripts: add verifier script for builtin module range data
...
|
||
|
Linus Torvalds
|
9ab27b0186 |
The core clk framework is left largely untouched this time around except for
support for the newly ratified DT property 'assigned-clock-rates-u64'. I'm much
more excited about the support for loading DT overlays from KUnit tests so that
we can test how the clk framework parses DT nodes during clk registration. The
clk framework has some places that are highly DeviceTree dependent so this
charts the path to extend the KUnit tests to cover even more framework code in
the future. I've got some more tests on the list that use the DT overlay
support, but they uncovered issues with clk unregistration that I'm still
working on fixing.
Outside the core, the clk driver update pile is dominated by Qualcomm and
Renesas SoCs, making it fairly usual. Looking closer, there are fixes for
things all over the place, like adding missing clk frequencies or moving
defines for the number of clks out of DT binding headers into the drivers.
There are even conversions of DT bindings to YAML and migration away from
strings to describe clk topology. Overall it doesn't look unusual so I expect
the new drivers to be where we'll have fixes in the coming weeks.
Core:
- KUnit tests for clk registration and fixed rate basic clk type
- A couple more devm helpers, one consumer and one provider
- Support for assigned-clock-rates-u64
New Drivers:
- Camera, display and GPU clocks on Qualcomm SM4450
- Camera clocks on Qualcomm SM8150
- Rockchip rk3576 clks
- Microchip SAM9X7 clks
- Renesas RZ/V2H(P) (R9A09G057) clks
Updates:
- Mark a bunch of struct freq_tbl const to reduce .data usage
- Add Qualcomm MSM8226 A7PLL and Regera PLL support
- Fix the Qualcomm Lucid 5LPE PLL configuration sequence to not reuse
Trion, as they do differ
- A number of fixes to the Qualcomm SM8550 display clock driver
- Fold Qualcomm SM8650 display clock driver into SM8550 one
- Add missing clocks and GDSCs needed for audio on Qualcomm MSM8998
- Add missing USB MP resets, GPLL9, and QUPv3 DFS to Qualcomm SC8180X
- Fix sdcc clk frequency tables on Qualcomm SC8180X
- Drop the Qualcomm SM8150 gcc_cpuss_ahb_clk_src
- Mark Qualcomm PCIe GDSCs as RET_ON on sm8250 and sm8540 to avoid them
turning off during suspend
- Use the HW_CTRL mechanism on Qualcomm SM8550 video clock controller
GDSCs
- Get rid of CLK_NR_CLKS defines in Rockchip DT binding headers
- Some fixes for Rockchip rk3228 and rk3588
- Exynos850: Add clock for Thermal Management Unit
- Exynos7885: Fix duplicated ID in the header, add missing TOP PLLs and
add clocks for USB block in the FSYS clock controller
- ExynosAutov9: Add DPUM clock controller
- ExynosAutov920: Add new (first) clock controllers: TOP and PERIC0
(and a bit more complete bindings)
- Use clk_hw pointer instead of fw_name for acm_aud_clk[0-1]_sel clocks
on i.MX8Q as parents in ACM provider
- Add i.MX95 NETCMIX support to the block control provider
- Fix parents for ENETx_REF_SEL clocks on i.MX6UL
- Add USB clocks, resets and power domains on Renesas RZ/G3S
- Add Generic Timer (GTM), I2C Bus Interface (RIIC), SD/MMC Host
Interface (SDHI) and Watchdog Timer (WDT) clocks and resets on
Renesas RZ/V2H
- Add PCIe, PWM, and CAN-FD clocks on Renesas R-Car V4M
- Add LCD controller clocks and resets on Renesas RZ/G2UL
- Add DMA clocks and resets on Renesas RZ/G3S
- Add fractional multiplication PLL support on Renesas R-Car Gen4
- Document support for the Renesas RZ/G2M v3.0 (r8a774a3) SoC
- Support for the Microchip SAM9X7 SoC as follows:
- Updates for the Microchip PLL drivers
- DT binding documentation updates (for the new clock driver and for
the slow clock controller that SAM9X7 is using)
- A fix for the Microchip SAMA7G5 clock driver to avoid allocating more
memory than necessary
- Constify some Amlogic structs
- Add SM1 eARC clocks for Amlogic
- Introduce a symbol namespace for Amlogic clock specific symbols
- Add reset controller support to audiomix block control on i.MX
- Add CLK_SET_RATE_PARENT flag to all audiomix clocks and to
i.MX7D lcdif_pixel_src clock
- Fix parent clocks for earc_phy and audpll on i.MX8MP
- Fix default parents for enet[12]_ref_sel on i.MX6UL
- Add ops in composite 8M and 93 that allow no-op on disable
- Add check for PCC present bit on composite 7ULP register
- Fix fractional part for fracn-gppll on prepare in i.MX
- Fix clock tree update for TF-A managed clocks on i.MX8M
- Drop CLK_SET_PARENT_GATE for DRAM mux on i.MX7D
- Add the SAI7 IPG clock for i.MX8MN
- Mark the 'nand_usdhc_bus' clock as non-critical on i.MX8MM
- Add LVDS bypass clocks on i.MX8QXP
- Add muxes for MIPI and PHY ref clocks on i.MX
- Reorder dc0_bypass0_clk, lcd_pxl and dc1_disp clocks on i.MX8QXP
- Add 1039.5MHz and 800MHz rates to fracn-gppll table on i.MX
- Add CLK_SET_RATE_PARENT for media_disp pixel clocks on i.MX8QXP
- Add some module descriptions to the i.MX generic and the
i.MXRT1050 driver
- Fix return value for bypass for composite i.MX7ULP
- Move Mediatek clk bindings to clock/
- Convert some more clk bindings to dt schema
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"The core clk framework is left largely untouched this time around
except for support for the newly ratified DT property
'assigned-clock-rates-u64'.
I'm much more excited about the support for loading DT overlays from
KUnit tests so that we can test how the clk framework parses DT nodes
during clk registration. The clk framework has some places that are
highly DeviceTree dependent so this charts the path to extend the
KUnit tests to cover even more framework code in the future. I've got
some more tests on the list that use the DT overlay support, but they
uncovered issues with clk unregistration that I'm still working on
fixing.
Outside the core, the clk driver update pile is dominated by Qualcomm
and Renesas SoCs, making it fairly usual. Looking closer, there are
fixes for things all over the place, like adding missing clk
frequencies or moving defines for the number of clks out of DT binding
headers into the drivers. There are even conversions of DT bindings to
YAML and migration away from strings to describe clk topology. Overall
it doesn't look unusual so I expect the new drivers to be where we'll
have fixes in the coming weeks.
Core:
- KUnit tests for clk registration and fixed rate basic clk type
- A couple more devm helpers, one consumer and one provider
- Support for assigned-clock-rates-u64
New Drivers:
- Camera, display and GPU clocks on Qualcomm SM4450
- Camera clocks on Qualcomm SM8150
- Rockchip rk3576 clks
- Microchip SAM9X7 clks
- Renesas RZ/V2H(P) (R9A09G057) clks
Updates:
- Mark a bunch of struct freq_tbl const to reduce .data usage
- Add Qualcomm MSM8226 A7PLL and Regera PLL support
- Fix the Qualcomm Lucid 5LPE PLL configuration sequence to not reuse
Trion, as they do differ
- A number of fixes to the Qualcomm SM8550 display clock driver
- Fold Qualcomm SM8650 display clock driver into SM8550 one
- Add missing clocks and GDSCs needed for audio on Qualcomm MSM8998
- Add missing USB MP resets, GPLL9, and QUPv3 DFS to Qualcomm SC8180X
- Fix sdcc clk frequency tables on Qualcomm SC8180X
- Drop the Qualcomm SM8150 gcc_cpuss_ahb_clk_src
- Mark Qualcomm PCIe GDSCs as RET_ON on sm8250 and sm8540 to avoid
them turning off during suspend
- Use the HW_CTRL mechanism on Qualcomm SM8550 video clock controller
GDSCs
- Get rid of CLK_NR_CLKS defines in Rockchip DT binding headers
- Some fixes for Rockchip rk3228 and rk3588
- Exynos850: Add clock for Thermal Management Unit
- Exynos7885: Fix duplicated ID in the header, add missing TOP PLLs
and add clocks for USB block in the FSYS clock controller
- ExynosAutov9: Add DPUM clock controller
- ExynosAutov920: Add new (first) clock controllers: TOP and PERIC0
(and a bit more complete bindings)
- Use clk_hw pointer instead of fw_name for acm_aud_clk[0-1]_sel
clocks on i.MX8Q as parents in ACM provider
- Add i.MX95 NETCMIX support to the block control provider
- Fix parents for ENETx_REF_SEL clocks on i.MX6UL
- Add USB clocks, resets and power domains on Renesas RZ/G3S
- Add Generic Timer (GTM), I2C Bus Interface (RIIC), SD/MMC Host
Interface (SDHI) and Watchdog Timer (WDT) clocks and resets on
Renesas RZ/V2H
- Add PCIe, PWM, and CAN-FD clocks on Renesas R-Car V4M
- Add LCD controller clocks and resets on Renesas RZ/G2UL
- Add DMA clocks and resets on Renesas RZ/G3S
- Add fractional multiplication PLL support on Renesas R-Car Gen4
- Document support for the Renesas RZ/G2M v3.0 (r8a774a3) SoC
- Support for the Microchip SAM9X7 SoC as follows:
- Updates for the Microchip PLL drivers
- DT binding documentation updates (for the new clock driver and for
the slow clock controller that SAM9X7 is using)
- A fix for the Microchip SAMA7G5 clock driver to avoid allocating
more memory than necessary
- Constify some Amlogic structs
- Add SM1 eARC clocks for Amlogic
- Introduce a symbol namespace for Amlogic clock specific symbols
- Add reset controller support to audiomix block control on i.MX
- Add CLK_SET_RATE_PARENT flag to all audiomix clocks and to i.MX7D
lcdif_pixel_src clock
- Fix parent clocks for earc_phy and audpll on i.MX8MP
- Fix default parents for enet[12]_ref_sel on i.MX6UL
- Add ops in composite 8M and 93 that allow no-op on disable
- Add check for PCC present bit on composite 7ULP register
- Fix fractional part for fracn-gppll on prepare in i.MX
- Fix clock tree update for TF-A managed clocks on i.MX8M
- Drop CLK_SET_PARENT_GATE for DRAM mux on i.MX7D
- Add the SAI7 IPG clock for i.MX8MN
- Mark the 'nand_usdhc_bus' clock as non-critical on i.MX8MM
- Add LVDS bypass clocks on i.MX8QXP
- Add muxes for MIPI and PHY ref clocks on i.MX
- Reorder dc0_bypass0_clk, lcd_pxl and dc1_disp clocks on i.MX8QXP
- Add 1039.5MHz and 800MHz rates to fracn-gppll table on i.MX
- Add CLK_SET_RATE_PARENT for media_disp pixel clocks on i.MX8QXP
- Add some module descriptions to the i.MX generic and the i.MXRT1050
driver
- Fix return value for bypass for composite i.MX7ULP
- Move Mediatek clk bindings to clock/
- Convert some more clk bindings to dt schema"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (180 commits)
clk: Switch back to struct platform_driver::remove()
dt-bindings: clock, reset: fix top-comment indentation rk3576 headers
clk: rockchip: remove unused mclk_pdm0_p/pdm0_p definitions
clk: provide devm_clk_get_optional_enabled_with_rate()
clk: fixed-rate: add devm_clk_hw_register_fixed_rate_parent_data()
clk: imx6ul: fix clock parent for IMX6UL_CLK_ENETx_REF_SEL
clk: renesas: r9a09g057: Add clock and reset entries for GTM/RIIC/SDHI/WDT
clk: renesas: rzv2h: Add support for dynamic switching divider clocks
clk: renesas: r9a08g045: Add clocks, resets and power domains for USB
clk: rockchip: fix error for unknown clocks
clk: rockchip: rk3588: drop unused code
clk: rockchip: Add clock controller for the RK3576
clk: rockchip: Add new pll type pll_rk3588_ddr
dt-bindings: clock, reset: Add support for rk3576
dt-bindings: clock: rockchip,rk3588-cru: drop unneeded assigned-clocks
clk: rockchip: rk3588: Fix 32k clock name for pmu_24m_32k_100m_src_p
clk: imx95: enable the clock of NETCMIX block control
dt-bindings: clock: add RMII clock selection
dt-bindings: clock: add i.MX95 NETCMIX block control
clk: imx: imx8: Use clk_hw pointer for self registered clock in clk_parent_data
...
|
||
|
Linus Torvalds
|
b3f391fddf |
bcachefs changes for 6.12-rc1
rcu_pending, btree key cache rework: this solves lock contenting in the key cache, eliminating the biggest source of the srcu lock hold time warnings, and drastically improving performance on some metadata heavy workloads - on multithreaded creates we're now 3-4x faster than xfs. We're now using an rhashtable instead of the system inode hash table; this is another significant performance improvement on multithreaded metadata workloads, eliminating more lock contention. for_each_btree_key_in_subvolume_upto(): new helper for iterating over keys within a specific subvolume, eliminating a lot of open coded "subvolume_get_snapshot()" and also fixing another source of srcu lock time warnings, by running each loop iteration in its own transaction (as the existing for_each_btree_key() does). More work on btree_trans locking asserts; we now assert that we don't hold btree node locks when trans->locked is false, which is important because we don't use lockdep for tracking individual btree node locks. Some cleanups and improvements in the bset.c btree node lookup code, from Alan. Rework of btree node pinning, which we use in backpointers fsck. The old hacky implementation, where the shrinker just skipped over nodes in the pinned range, was causing OOMs; instead we now use another shrinker with a much higher seeks number for pinned nodes. Rebalance now uses BCH_WRITE_ONLY_SPECIFIED_DEVS; this fixes an issue where rebalance would sometimes fall back to allocating from the full filesystem, which is not what we want when it's trying to move data to a specific target. Use __GFP_ACCOUNT, GFP_RECLAIMABLE for btree node, key cache allocations. Idmap mounts are now supported - Hongbo. Rename whiteouts are now supported - Hongbo. Erasure coding can now handle devices being marked as failed, or forcibly removed. We still need the evacuate path for erasure coding, but it's getting very close to ready for people to start using. Status, and when will we be taking off experimental: ---------------------------------------------------- Going by critical, user facing bugs getting found and fixed, we're nearly there. There are a couple key items that need to be finished before we can take off the experimental label: - The end-user experience is still pretty painful when the root filesystem needs a fsck; we need some form of limited self healing so that necessary repair gets run automatically. Errors (by type) are recorded in the superblock, so what we need to do next is convert remaining inconsistent() errors to fsck() errors (so that all runtime inconsistencies are logged in the superblock), and we need to go through the list of fsck errors and classify them by which fsck passes are needed to repair them. - We need comprehensive torture testing for all our repair paths, to shake out remaining bugs there. Thomas has been working on the tooling for this, so this is coming soonish. Slightly less critical items: - We need to improve the end-user experience for degraded mounts: right now, a degraded root filesystem means dropping to an initramfs shell or somehow inputting mount options manually (we don't want to allow degraded mounts without some form of user input, except on unattended servers) - we need the mount helper to prompt the user to allow mounting degraded, and make sure this works with systemd. - Scalabiity: we have users running 100TB+ filesystems, and that's effectively the limit right now due to fsck times. We have some reworks in the pipeline to address this, we're aiming to make petabyte sized filesystems practical. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKnAFLkS8Qha+jvQrE6szbY3KbnYFAmbvHQoACgkQE6szbY3K bnYfAw/+IXQ43/O+Jzs0MLD7pKZnrlbHiX9FqYLazD40vWvkyRTQOwgTn8pVNhq3 4YWmtuZyqh036YC+bGqYFOhz20YetS5UdgbClpwmc99JJ6xsY+Z1mdpYfz5oq1Dw /pBX5iYb3rAt8UbQoZ8lcWM+GpT3GKJVgJuiLB2gRp9gATFesuh+0qU42oIVVVU5 4y3VhDBUmRk4XqEnk8hr7EIDMW0wWP3aptxYMZzeUPW0x1cEQ+FWrJo5D6lXv2KK dKv3MogvA0FFNi/eNexclPiu2pXtI7vrxT7umsxAICHLt41rWpV5ttE6io3bC4ZN qvwF9w2CpmKPKchFru9PO+QrWHVR7e6bphwf3TzyoKZ7tTn42f1RQlub7gBzI3bz ai5ZwGRIvpUoPVBj+CO+Ipog81uUb23Ma+gXg1akEFBOAb+o7I3KOOSBh5l+0cHj 3Ov1n0TLcsoO2cqoqfsV2QubW9YcWEZ76g5mKwQnUn8Cs6Fp0wWaIyK9aNkIAxcr tNDPGtH1gKitxUvju5i/LyI7y1UoeFvqJFee0VsU6QnixHn1ySzhePsJt6UEnIJT Ia3C96Igqu2mV9FxhfGHj/qi7TGjqqkZHa8+B610cDpgf15cx7Ps2DYjkuQMFCqZ Q3Q1o5De9roRq5xF2hLiYJCbzJKqd5ichFsBtLQuX572ICxbICg= =oVCy -----END PGP SIGNATURE----- Merge tag 'bcachefs-2024-09-21' of git://evilpiepirate.org/bcachefs Pull bcachefs updates from Kent Overstreet: - rcu_pending, btree key cache rework: this solves lock contenting in the key cache, eliminating the biggest source of the srcu lock hold time warnings, and drastically improving performance on some metadata heavy workloads - on multithreaded creates we're now 3-4x faster than xfs. - We're now using an rhashtable instead of the system inode hash table; this is another significant performance improvement on multithreaded metadata workloads, eliminating more lock contention. - for_each_btree_key_in_subvolume_upto(): new helper for iterating over keys within a specific subvolume, eliminating a lot of open coded "subvolume_get_snapshot()" and also fixing another source of srcu lock time warnings, by running each loop iteration in its own transaction (as the existing for_each_btree_key() does). - More work on btree_trans locking asserts; we now assert that we don't hold btree node locks when trans->locked is false, which is important because we don't use lockdep for tracking individual btree node locks. - Some cleanups and improvements in the bset.c btree node lookup code, from Alan. - Rework of btree node pinning, which we use in backpointers fsck. The old hacky implementation, where the shrinker just skipped over nodes in the pinned range, was causing OOMs; instead we now use another shrinker with a much higher seeks number for pinned nodes. - Rebalance now uses BCH_WRITE_ONLY_SPECIFIED_DEVS; this fixes an issue where rebalance would sometimes fall back to allocating from the full filesystem, which is not what we want when it's trying to move data to a specific target. - Use __GFP_ACCOUNT, GFP_RECLAIMABLE for btree node, key cache allocations. - Idmap mounts are now supported (Hongbo Li) - Rename whiteouts are now supported (Hongbo Li) - Erasure coding can now handle devices being marked as failed, or forcibly removed. We still need the evacuate path for erasure coding, but it's getting very close to ready for people to start using. * tag 'bcachefs-2024-09-21' of git://evilpiepirate.org/bcachefs: (99 commits) bcachefs: return err ptr instead of null in read sb clean bcachefs: Remove duplicated include in backpointers.c bcachefs: Don't drop devices with stripe pointers bcachefs: bch2_ec_stripe_head_get() now checks for change in rw devices bcachefs: bch_fs.rw_devs_change_count bcachefs: bch2_dev_remove_stripes() bcachefs: bch2_trigger_ptr() calculates sectors even when no device bcachefs: improve error messages in bch2_ec_read_extent() bcachefs: improve error message on too few devices for ec bcachefs: improve bch2_new_stripe_to_text() bcachefs: ec_stripe_head.nr_created bcachefs: bch_stripe.disk_label bcachefs: stripe_to_mem() bcachefs: EIO errcode cleanup bcachefs: Rework btree node pinning bcachefs: split up btree cache counters for live, freeable bcachefs: btree cache counters should be size_t bcachefs: Don't count "skipped access bit" as touched in btree cache scan bcachefs: Failed devices no longer require mounting in degraded mode bcachefs: bch2_dev_rcu_noerror() ... |
||
|
Linus Torvalds
|
de5cb0dcb7 |
Merge branch 'address-masking'
Merge user access fast validation using address masking. This allows architectures to optionally use a data dependent address masking model instead of a conditional branch for validating user accesses. That avoids the Spectre-v1 speculation barriers. Right now only x86-64 takes advantage of this, and not all architectures will be able to do it. It requires a guard region between the user and kernel address spaces (so that you can't overflow from one to the other), and an easy way to generate a guaranteed-to-fault address for invalid user pointers. Also note that this currently assumes that there is no difference between user read and write accesses. If extended to architectures like powerpc, we'll also need to separate out the user read-vs-write cases. * address-masking: x86: make the masked_user_access_begin() macro use its argument only once x86: do the user address masking outside the user access area x86: support user address masking instead of non-speculative conditional |
||
|
Linus Torvalds
|
88264981f2 |
sched_ext: Initial pull request for v6.12
This is the initial pull request of sched_ext. The v7 patchset (https://lkml.kernel.org/r/20240618212056.2833381-1-tj@kernel.org) is applied on top of tip/sched/core + bpf/master as of Jun 18th. tip/sched/core 793a62823d1c ("sched/core: Drop spinlocks on contention iff kernel is preempti ble") bpf/master |
||
|
Linus Torvalds
|
440b652328 |
bpf-next-6.12
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Merge tag 'bpf-next-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf updates from Alexei Starovoitov:
- Introduce '__attribute__((bpf_fastcall))' for helpers and kfuncs with
corresponding support in LLVM.
It is similar to existing 'no_caller_saved_registers' attribute in
GCC/LLVM with a provision for backward compatibility. It allows
compilers generate more efficient BPF code assuming the verifier or
JITs will inline or partially inline a helper/kfunc with such
attribute. bpf_cast_to_kern_ctx, bpf_rdonly_cast,
bpf_get_smp_processor_id are the first set of such helpers.
- Harden and extend ELF build ID parsing logic.
When called from sleepable context the relevants parts of ELF file
will be read to find and fetch .note.gnu.build-id information. Also
harden the logic to avoid TOCTOU, overflow, out-of-bounds problems.
- Improvements and fixes for sched-ext:
- Allow passing BPF iterators as kfunc arguments
- Make the pointer returned from iter_next method trusted
- Fix x86 JIT convergence issue due to growing/shrinking conditional
jumps in variable length encoding
- BPF_LSM related:
- Introduce few VFS kfuncs and consolidate them in
fs/bpf_fs_kfuncs.c
- Enforce correct range of return values from certain LSM hooks
- Disallow attaching to other LSM hooks
- Prerequisite work for upcoming Qdisc in BPF:
- Allow kptrs in program provided structs
- Support for gen_epilogue in verifier_ops
- Important fixes:
- Fix uprobe multi pid filter check
- Fix bpf_strtol and bpf_strtoul helpers
- Track equal scalars history on per-instruction level
- Fix tailcall hierarchy on x86 and arm64
- Fix signed division overflow to prevent INT_MIN/-1 trap on x86
- Fix get kernel stack in BPF progs attached to tracepoint:syscall
- Selftests:
- Add uprobe bench/stress tool
- Generate file dependencies to drastically improve re-build time
- Match JIT-ed and BPF asm with __xlated/__jited keywords
- Convert older tests to test_progs framework
- Add support for RISC-V
- Few fixes when BPF programs are compiled with GCC-BPF backend
(support for GCC-BPF in BPF CI is ongoing in parallel)
- Add traffic monitor
- Enable cross compile and musl libc
* tag 'bpf-next-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (260 commits)
btf: require pahole 1.21+ for DEBUG_INFO_BTF with default DWARF version
btf: move pahole check in scripts/link-vmlinux.sh to lib/Kconfig.debug
btf: remove redundant CONFIG_BPF test in scripts/link-vmlinux.sh
bpf: Call the missed kfree() when there is no special field in btf
bpf: Call the missed btf_record_free() when map creation fails
selftests/bpf: Add a test case to write mtu result into .rodata
selftests/bpf: Add a test case to write strtol result into .rodata
selftests/bpf: Rename ARG_PTR_TO_LONG test description
selftests/bpf: Fix ARG_PTR_TO_LONG {half-,}uninitialized test
bpf: Zero former ARG_PTR_TO_{LONG,INT} args in case of error
bpf: Improve check_raw_mode_ok test for MEM_UNINIT-tagged types
bpf: Fix helper writes to read-only maps
bpf: Remove truncation test in bpf_strtol and bpf_strtoul helpers
bpf: Fix bpf_strtol and bpf_strtoul helpers for 32bit
selftests/bpf: Add tests for sdiv/smod overflow cases
bpf: Fix a sdiv overflow issue
libbpf: Add bpf_object__token_fd accessor
docs/bpf: Add missing BPF program types to docs
docs/bpf: Add constant values for linkages
bpf: Use fake pt_regs when doing bpf syscall tracepoint tracing
...
|
||
|
Linus Torvalds
|
7856a56541 |
Many singleton patches - please see the various changelogs for details.
Quite a lot of nilfs2 work this time around.
Notable patch series in this pull request are:
"mul_u64_u64_div_u64: new implementation" by Nicolas Pitre, with
assistance from Uwe Kleine-König. Reimplement mul_u64_u64_div_u64() to
provide (much) more accurate results. The current implementation was
causing Uwe some issues in the PWM drivers.
"xz: Updates to license, filters, and compression options" from Lasse
Collin. Miscellaneous maintenance and kinor feature work to the xz
decompressor.
"Fix some GDB command error and add some GDB commands" from Kuan-Ying Lee.
Fixes and enhancements to the gdb scripts.
"treewide: add missing MODULE_DESCRIPTION() macros" from Jeff Johnson.
Adds lots of MODULE_DESCRIPTIONs, thus fixing lots of warnings about this.
"nilfs2: add support for some common ioctls" from Ryusuke Konishi. Adds
various commonly-available ioctls to nilfs2.
"This series fixes a number of formatting issues in kernel doc comments"
from Ryusuke Konishi does that.
"nilfs2: prevent unexpected ENOENT propagation" from Ryusuke Konishi. Fix
issues where -ENOENT was being unintentionally and inappropriately
returned to userspace.
"nilfs2: assorted cleanups" from Huang Xiaojia.
"nilfs2: fix potential issues with empty b-tree nodes" from Ryusuke
Konishi fixes some issues which can occur on corrupted nilfs2 filesystems.
"scripts/decode_stacktrace.sh: improve error reporting and usability" from
Luca Ceresoli does those things.
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Merge tag 'mm-nonmm-stable-2024-09-21-07-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
"Many singleton patches - please see the various changelogs for
details.
Quite a lot of nilfs2 work this time around.
Notable patch series in this pull request are:
- "mul_u64_u64_div_u64: new implementation" by Nicolas Pitre, with
assistance from Uwe Kleine-König. Reimplement mul_u64_u64_div_u64()
to provide (much) more accurate results. The current implementation
was causing Uwe some issues in the PWM drivers.
- "xz: Updates to license, filters, and compression options" from
Lasse Collin. Miscellaneous maintenance and kinor feature work to
the xz decompressor.
- "Fix some GDB command error and add some GDB commands" from
Kuan-Ying Lee. Fixes and enhancements to the gdb scripts.
- "treewide: add missing MODULE_DESCRIPTION() macros" from Jeff
Johnson. Adds lots of MODULE_DESCRIPTIONs, thus fixing lots of
warnings about this.
- "nilfs2: add support for some common ioctls" from Ryusuke Konishi.
Adds various commonly-available ioctls to nilfs2.
- "This series fixes a number of formatting issues in kernel doc
comments" from Ryusuke Konishi does that.
- "nilfs2: prevent unexpected ENOENT propagation" from Ryusuke
Konishi. Fix issues where -ENOENT was being unintentionally and
inappropriately returned to userspace.
- "nilfs2: assorted cleanups" from Huang Xiaojia.
- "nilfs2: fix potential issues with empty b-tree nodes" from Ryusuke
Konishi fixes some issues which can occur on corrupted nilfs2
filesystems.
- "scripts/decode_stacktrace.sh: improve error reporting and
usability" from Luca Ceresoli does those things"
* tag 'mm-nonmm-stable-2024-09-21-07-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (103 commits)
list: test: increase coverage of list_test_list_replace*()
list: test: fix tests for list_cut_position()
proc: use __auto_type more
treewide: correct the typo 'retun'
ocfs2: cleanup return value and mlog in ocfs2_global_read_info()
nilfs2: remove duplicate 'unlikely()' usage
nilfs2: fix potential oob read in nilfs_btree_check_delete()
nilfs2: determine empty node blocks as corrupted
nilfs2: fix potential null-ptr-deref in nilfs_btree_insert()
user_namespace: use kmemdup_array() instead of kmemdup() for multiple allocation
tools/mm: rm thp_swap_allocator_test when make clean
squashfs: fix percpu address space issues in decompressor_multi_percpu.c
lib: glob.c: added null check for character class
nilfs2: refactor nilfs_segctor_thread()
nilfs2: use kthread_create and kthread_stop for the log writer thread
nilfs2: remove sc_timer_task
nilfs2: do not repair reserved inode bitmap in nilfs_new_inode()
nilfs2: eliminate the shared counter and spinlock for i_generation
nilfs2: separate inode type information from i_state field
nilfs2: use the BITS_PER_LONG macro
...
|
||
|
Linus Torvalds
|
617a814f14 |
ALong with the usual shower of singleton patches, notable patch series in
this pull request are:
"Align kvrealloc() with krealloc()" from Danilo Krummrich. Adds
consistency to the APIs and behaviour of these two core allocation
functions. This also simplifies/enables Rustification.
"Some cleanups for shmem" from Baolin Wang. No functional changes - mode
code reuse, better function naming, logic simplifications.
"mm: some small page fault cleanups" from Josef Bacik. No functional
changes - code cleanups only.
"Various memory tiering fixes" from Zi Yan. A small fix and a little
cleanup.
"mm/swap: remove boilerplate" from Yu Zhao. Code cleanups and
simplifications and .text shrinkage.
"Kernel stack usage histogram" from Pasha Tatashin and Shakeel Butt. This
is a feature, it adds new feilds to /proc/vmstat such as
$ grep kstack /proc/vmstat
kstack_1k 3
kstack_2k 188
kstack_4k 11391
kstack_8k 243
kstack_16k 0
which tells us that 11391 processes used 4k of stack while none at all
used 16k. Useful for some system tuning things, but partivularly useful
for "the dynamic kernel stack project".
"kmemleak: support for percpu memory leak detect" from Pavel Tikhomirov.
Teaches kmemleak to detect leaksage of percpu memory.
"mm: memcg: page counters optimizations" from Roman Gushchin. "3
independent small optimizations of page counters".
"mm: split PTE/PMD PT table Kconfig cleanups+clarifications" from David
Hildenbrand. Improves PTE/PMD splitlock detection, makes powerpc/8xx work
correctly by design rather than by accident.
"mm: remove arch_make_page_accessible()" from David Hildenbrand. Some
folio conversions which make arch_make_page_accessible() unneeded.
"mm, memcg: cg2 memory{.swap,}.peak write handlers" fro David Finkel.
Cleans up and fixes our handling of the resetting of the cgroup/process
peak-memory-use detector.
"Make core VMA operations internal and testable" from Lorenzo Stoakes.
Rationalizaion and encapsulation of the VMA manipulation APIs. With a
view to better enable testing of the VMA functions, even from a
userspace-only harness.
"mm: zswap: fixes for global shrinker" from Takero Funaki. Fix issues in
the zswap global shrinker, resulting in improved performance.
"mm: print the promo watermark in zoneinfo" from Kaiyang Zhao. Fill in
some missing info in /proc/zoneinfo.
"mm: replace follow_page() by folio_walk" from David Hildenbrand. Code
cleanups and rationalizations (conversion to folio_walk()) resulting in
the removal of follow_page().
"improving dynamic zswap shrinker protection scheme" from Nhat Pham. Some
tuning to improve zswap's dynamic shrinker. Significant reductions in
swapin and improvements in performance are shown.
"mm: Fix several issues with unaccepted memory" from Kirill Shutemov.
Improvements to the new unaccepted memory feature,
"mm/mprotect: Fix dax puds" from Peter Xu. Implements mprotect on DAX
PUDs. This was missing, although nobody seems to have notied yet.
"Introduce a store type enum for the Maple tree" from Sidhartha Kumar.
Cleanups and modest performance improvements for the maple tree library
code.
"memcg: further decouple v1 code from v2" from Shakeel Butt. Move more
cgroup v1 remnants away from the v2 memcg code.
"memcg: initiate deprecation of v1 features" from Shakeel Butt. Adds
various warnings telling users that memcg v1 features are deprecated.
"mm: swap: mTHP swap allocator base on swap cluster order" from Chris Li.
Greatly improves the success rate of the mTHP swap allocation.
"mm: introduce numa_memblks" from Mike Rapoport. Moves various disparate
per-arch implementations of numa_memblk code into generic code.
"mm: batch free swaps for zap_pte_range()" from Barry Song. Greatly
improves the performance of munmap() of swap-filled ptes.
"support large folio swap-out and swap-in for shmem" from Baolin Wang.
With this series we no longer split shmem large folios into simgle-page
folios when swapping out shmem.
"mm/hugetlb: alloc/free gigantic folios" from Yu Zhao. Nice performance
improvements and code reductions for gigantic folios.
"support shmem mTHP collapse" from Baolin Wang. Adds support for
khugepaged's collapsing of shmem mTHP folios.
"mm: Optimize mseal checks" from Pedro Falcato. Fixes an mprotect()
performance regression due to the addition of mseal().
"Increase the number of bits available in page_type" from Matthew Wilcox.
Increases the number of bits available in page_type!
"Simplify the page flags a little" from Matthew Wilcox. Many legacy page
flags are now folio flags, so the page-based flags and their
accessors/mutators can be removed.
"mm: store zero pages to be swapped out in a bitmap" from Usama Arif. An
optimization which permits us to avoid writing/reading zero-filled zswap
pages to backing store.
"Avoid MAP_FIXED gap exposure" from Liam Howlett. Fixes a race window
which occurs when a MAP_FIXED operqtion is occurring during an unrelated
vma tree walk.
"mm: remove vma_merge()" from Lorenzo Stoakes. Major rotorooting of the
vma_merge() functionality, making ot cleaner, more testable and better
tested.
"misc fixups for DAMON {self,kunit} tests" from SeongJae Park. Minor
fixups of DAMON selftests and kunit tests.
"mm: memory_hotplug: improve do_migrate_range()" from Kefeng Wang. Code
cleanups and folio conversions.
"Shmem mTHP controls and stats improvements" from Ryan Roberts. Cleanups
for shmem controls and stats.
"mm: count the number of anonymous THPs per size" from Barry Song. Expose
additional anon THP stats to userspace for improved tuning.
"mm: finish isolate/putback_lru_page()" from Kefeng Wang: more folio
conversions and removal of now-unused page-based APIs.
"replace per-quota region priorities histogram buffer with per-context
one" from SeongJae Park. DAMON histogram rationalization.
"Docs/damon: update GitHub repo URLs and maintainer-profile" from SeongJae
Park. DAMON documentation updates.
"mm/vdpa: correct misuse of non-direct-reclaim __GFP_NOFAIL and improve
related doc and warn" from Jason Wang: fixes usage of page allocator
__GFP_NOFAIL and GFP_ATOMIC flags.
"mm: split underused THPs" from Yu Zhao. Improve THP=always policy - this
was overprovisioning THPs in sparsely accessed memory areas.
"zram: introduce custom comp backends API" frm Sergey Senozhatsky. Add
support for zram run-time compression algorithm tuning.
"mm: Care about shadow stack guard gap when getting an unmapped area" from
Mark Brown. Fix up the various arch_get_unmapped_area() implementations
to better respect guard areas.
"Improve mem_cgroup_iter()" from Kinsey Ho. Improve the reliability of
mem_cgroup_iter() and various code cleanups.
"mm: Support huge pfnmaps" from Peter Xu. Extends the usage of huge
pfnmap support.
"resource: Fix region_intersects() vs add_memory_driver_managed()" from
Huang Ying. Fix a bug in region_intersects() for systems with CXL memory.
"mm: hwpoison: two more poison recovery" from Kefeng Wang. Teaches a
couple more code paths to correctly recover from the encountering of
poisoned memry.
"mm: enable large folios swap-in support" from Barry Song. Support the
swapin of mTHP memory into appropriately-sized folios, rather than into
single-page folios.
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Merge tag 'mm-stable-2024-09-20-02-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"Along with the usual shower of singleton patches, notable patch series
in this pull request are:
- "Align kvrealloc() with krealloc()" from Danilo Krummrich. Adds
consistency to the APIs and behaviour of these two core allocation
functions. This also simplifies/enables Rustification.
- "Some cleanups for shmem" from Baolin Wang. No functional changes -
mode code reuse, better function naming, logic simplifications.
- "mm: some small page fault cleanups" from Josef Bacik. No
functional changes - code cleanups only.
- "Various memory tiering fixes" from Zi Yan. A small fix and a
little cleanup.
- "mm/swap: remove boilerplate" from Yu Zhao. Code cleanups and
simplifications and .text shrinkage.
- "Kernel stack usage histogram" from Pasha Tatashin and Shakeel
Butt. This is a feature, it adds new feilds to /proc/vmstat such as
$ grep kstack /proc/vmstat
kstack_1k 3
kstack_2k 188
kstack_4k 11391
kstack_8k 243
kstack_16k 0
which tells us that 11391 processes used 4k of stack while none at
all used 16k. Useful for some system tuning things, but
partivularly useful for "the dynamic kernel stack project".
- "kmemleak: support for percpu memory leak detect" from Pavel
Tikhomirov. Teaches kmemleak to detect leaksage of percpu memory.
- "mm: memcg: page counters optimizations" from Roman Gushchin. "3
independent small optimizations of page counters".
- "mm: split PTE/PMD PT table Kconfig cleanups+clarifications" from
David Hildenbrand. Improves PTE/PMD splitlock detection, makes
powerpc/8xx work correctly by design rather than by accident.
- "mm: remove arch_make_page_accessible()" from David Hildenbrand.
Some folio conversions which make arch_make_page_accessible()
unneeded.
- "mm, memcg: cg2 memory{.swap,}.peak write handlers" fro David
Finkel. Cleans up and fixes our handling of the resetting of the
cgroup/process peak-memory-use detector.
- "Make core VMA operations internal and testable" from Lorenzo
Stoakes. Rationalizaion and encapsulation of the VMA manipulation
APIs. With a view to better enable testing of the VMA functions,
even from a userspace-only harness.
- "mm: zswap: fixes for global shrinker" from Takero Funaki. Fix
issues in the zswap global shrinker, resulting in improved
performance.
- "mm: print the promo watermark in zoneinfo" from Kaiyang Zhao. Fill
in some missing info in /proc/zoneinfo.
- "mm: replace follow_page() by folio_walk" from David Hildenbrand.
Code cleanups and rationalizations (conversion to folio_walk())
resulting in the removal of follow_page().
- "improving dynamic zswap shrinker protection scheme" from Nhat
Pham. Some tuning to improve zswap's dynamic shrinker. Significant
reductions in swapin and improvements in performance are shown.
- "mm: Fix several issues with unaccepted memory" from Kirill
Shutemov. Improvements to the new unaccepted memory feature,
- "mm/mprotect: Fix dax puds" from Peter Xu. Implements mprotect on
DAX PUDs. This was missing, although nobody seems to have notied
yet.
- "Introduce a store type enum for the Maple tree" from Sidhartha
Kumar. Cleanups and modest performance improvements for the maple
tree library code.
- "memcg: further decouple v1 code from v2" from Shakeel Butt. Move
more cgroup v1 remnants away from the v2 memcg code.
- "memcg: initiate deprecation of v1 features" from Shakeel Butt.
Adds various warnings telling users that memcg v1 features are
deprecated.
- "mm: swap: mTHP swap allocator base on swap cluster order" from
Chris Li. Greatly improves the success rate of the mTHP swap
allocation.
- "mm: introduce numa_memblks" from Mike Rapoport. Moves various
disparate per-arch implementations of numa_memblk code into generic
code.
- "mm: batch free swaps for zap_pte_range()" from Barry Song. Greatly
improves the performance of munmap() of swap-filled ptes.
- "support large folio swap-out and swap-in for shmem" from Baolin
Wang. With this series we no longer split shmem large folios into
simgle-page folios when swapping out shmem.
- "mm/hugetlb: alloc/free gigantic folios" from Yu Zhao. Nice
performance improvements and code reductions for gigantic folios.
- "support shmem mTHP collapse" from Baolin Wang. Adds support for
khugepaged's collapsing of shmem mTHP folios.
- "mm: Optimize mseal checks" from Pedro Falcato. Fixes an mprotect()
performance regression due to the addition of mseal().
- "Increase the number of bits available in page_type" from Matthew
Wilcox. Increases the number of bits available in page_type!
- "Simplify the page flags a little" from Matthew Wilcox. Many legacy
page flags are now folio flags, so the page-based flags and their
accessors/mutators can be removed.
- "mm: store zero pages to be swapped out in a bitmap" from Usama
Arif. An optimization which permits us to avoid writing/reading
zero-filled zswap pages to backing store.
- "Avoid MAP_FIXED gap exposure" from Liam Howlett. Fixes a race
window which occurs when a MAP_FIXED operqtion is occurring during
an unrelated vma tree walk.
- "mm: remove vma_merge()" from Lorenzo Stoakes. Major rotorooting of
the vma_merge() functionality, making ot cleaner, more testable and
better tested.
- "misc fixups for DAMON {self,kunit} tests" from SeongJae Park.
Minor fixups of DAMON selftests and kunit tests.
- "mm: memory_hotplug: improve do_migrate_range()" from Kefeng Wang.
Code cleanups and folio conversions.
- "Shmem mTHP controls and stats improvements" from Ryan Roberts.
Cleanups for shmem controls and stats.
- "mm: count the number of anonymous THPs per size" from Barry Song.
Expose additional anon THP stats to userspace for improved tuning.
- "mm: finish isolate/putback_lru_page()" from Kefeng Wang: more
folio conversions and removal of now-unused page-based APIs.
- "replace per-quota region priorities histogram buffer with
per-context one" from SeongJae Park. DAMON histogram
rationalization.
- "Docs/damon: update GitHub repo URLs and maintainer-profile" from
SeongJae Park. DAMON documentation updates.
- "mm/vdpa: correct misuse of non-direct-reclaim __GFP_NOFAIL and
improve related doc and warn" from Jason Wang: fixes usage of page
allocator __GFP_NOFAIL and GFP_ATOMIC flags.
- "mm: split underused THPs" from Yu Zhao. Improve THP=always policy.
This was overprovisioning THPs in sparsely accessed memory areas.
- "zram: introduce custom comp backends API" frm Sergey Senozhatsky.
Add support for zram run-time compression algorithm tuning.
- "mm: Care about shadow stack guard gap when getting an unmapped
area" from Mark Brown. Fix up the various arch_get_unmapped_area()
implementations to better respect guard areas.
- "Improve mem_cgroup_iter()" from Kinsey Ho. Improve the reliability
of mem_cgroup_iter() and various code cleanups.
- "mm: Support huge pfnmaps" from Peter Xu. Extends the usage of huge
pfnmap support.
- "resource: Fix region_intersects() vs add_memory_driver_managed()"
from Huang Ying. Fix a bug in region_intersects() for systems with
CXL memory.
- "mm: hwpoison: two more poison recovery" from Kefeng Wang. Teaches
a couple more code paths to correctly recover from the encountering
of poisoned memry.
- "mm: enable large folios swap-in support" from Barry Song. Support
the swapin of mTHP memory into appropriately-sized folios, rather
than into single-page folios"
* tag 'mm-stable-2024-09-20-02-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (416 commits)
zram: free secondary algorithms names
uprobes: turn xol_area->pages[2] into xol_area->page
uprobes: introduce the global struct vm_special_mapping xol_mapping
Revert "uprobes: use vm_special_mapping close() functionality"
mm: support large folios swap-in for sync io devices
mm: add nr argument in mem_cgroup_swapin_uncharge_swap() helper to support large folios
mm: fix swap_read_folio_zeromap() for large folios with partial zeromap
mm/debug_vm_pgtable: Use pxdp_get() for accessing page table entries
set_memory: add __must_check to generic stubs
mm/vma: return the exact errno in vms_gather_munmap_vmas()
memcg: cleanup with !CONFIG_MEMCG_V1
mm/show_mem.c: report alloc tags in human readable units
mm: support poison recovery from copy_present_page()
mm: support poison recovery from do_cow_fault()
resource, kunit: add test case for region_intersects()
resource: make alloc_free_mem_region() works for iomem_resource
mm: z3fold: deprecate CONFIG_Z3FOLD
vfio/pci: implement huge_fault support
mm/arm64: support large pfn mappings
mm/x86: support large pfn mappings
...
|
||
|
Ming Lei
|
65f666c620 |
lib/sbitmap: define swap_lock as raw_spinlock_t
When called from sbitmap_queue_get(), sbitmap_deferred_clear() may be run
with preempt disabled. In RT kernel, spin_lock() can sleep, then warning
of "BUG: sleeping function called from invalid context" can be triggered.
Fix it by replacing it with raw_spin_lock.
Cc: Yang Yang <yang.yang@vivo.com>
Fixes:
|
||
|
Kris Van Hees
|
5f5e734432 |
kbuild: generate offset range data for builtin modules
Create file module.builtin.ranges that can be used to find where
built-in modules are located by their addresses. This will be useful for
tracing tools to find what functions are for various built-in modules.
The offset range data for builtin modules is generated using:
- modules.builtin: associates object files with module names
- vmlinux.map: provides load order of sections and offset of first member
per section
- vmlinux.o.map: provides offset of object file content per section
- .*.cmd: build cmd file with KBUILD_MODFILE
The generated data will look like:
.text 00000000-00000000 = _text
.text 0000baf0-0000cb10 amd_uncore
.text 0009bd10-0009c8e0 iosf_mbi
...
.text 00b9f080-00ba011a intel_skl_int3472_discrete
.text 00ba0120-00ba03c0 intel_skl_int3472_discrete intel_skl_int3472_tps68470
.text 00ba03c0-00ba08d6 intel_skl_int3472_tps68470
...
.data 00000000-00000000 = _sdata
.data 0000f020-0000f680 amd_uncore
For each ELF section, it lists the offset of the first symbol. This can
be used to determine the base address of the section at runtime.
Next, it lists (in strict ascending order) offset ranges in that section
that cover the symbols of one or more builtin modules. Multiple ranges
can apply to a single module, and ranges can be shared between modules.
The CONFIG_BUILTIN_MODULE_RANGES option controls whether offset range data
is generated for kernel modules that are built into the kernel image.
How it works:
1. The modules.builtin file is parsed to obtain a list of built-in
module names and their associated object names (the .ko file that
the module would be in if it were a loadable module, hereafter
referred to as <kmodfile>). This object name can be used to
identify objects in the kernel compile because any C or assembler
code that ends up into a built-in module will have the option
-DKBUILD_MODFILE=<kmodfile> present in its build command, and those
can be found in the .<obj>.cmd file in the kernel build tree.
If an object is part of multiple modules, they will all be listed
in the KBUILD_MODFILE option argument.
This allows us to conclusively determine whether an object in the
kernel build belong to any modules, and which.
2. The vmlinux.map is parsed next to determine the base address of each
top level section so that all addresses into the section can be
turned into offsets. This makes it possible to handle sections
getting loaded at different addresses at system boot.
We also determine an 'anchor' symbol at the beginning of each
section to make it possible to calculate the true base address of
a section at runtime (i.e. symbol address - symbol offset).
We collect start addresses of sections that are included in the top
level section. This is used when vmlinux is linked using vmlinux.o,
because in that case, we need to look at the vmlinux.o linker map to
know what object a symbol is found in.
And finally, we process each symbol that is listed in vmlinux.map
(or vmlinux.o.map) based on the following structure:
vmlinux linked from vmlinux.a:
vmlinux.map:
<top level section>
<included section> -- might be same as top level section)
<object> -- built-in association known
<symbol> -- belongs to module(s) object belongs to
...
vmlinux linked from vmlinux.o:
vmlinux.map:
<top level section>
<included section> -- might be same as top level section)
vmlinux.o -- need to use vmlinux.o.map
<symbol> -- ignored
...
vmlinux.o.map:
<section>
<object> -- built-in association known
<symbol> -- belongs to module(s) object belongs to
...
3. As sections, objects, and symbols are processed, offset ranges are
constructed in a straight-forward way:
- If the symbol belongs to one or more built-in modules:
- If we were working on the same module(s), extend the range
to include this object
- If we were working on another module(s), close that range,
and start the new one
- If the symbol does not belong to any built-in modules:
- If we were working on a module(s) range, close that range
Signed-off-by: Kris Van Hees <kris.van.hees@oracle.com>
Reviewed-by: Nick Alcock <nick.alcock@oracle.com>
Reviewed-by: Alan Maguire <alan.maguire@oracle.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Tested-by: Sam James <sam@gentoo.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Tested-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
|
||
|
Linus Torvalds
|
4a39ac5b7d |
Random number generator updates for Linux 6.12-rc1.
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Merge tag 'random-6.12-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random
Pull random number generator updates from Jason Donenfeld:
"Originally I'd planned on sending each of the vDSO getrandom()
architecture ports to their respective arch trees. But as we started
to work on this, we found lots of interesting issues in the shared
code and infrastructure, the fixes for which the various archs needed
to base their work.
So in the end, this turned into a nice collaborative effort fixing up
issues and porting to 5 new architectures -- arm64, powerpc64,
powerpc32, s390x, and loongarch64 -- with everybody pitching in and
commenting on each other's code. It was a fun development cycle.
This contains:
- Numerous fixups to the vDSO selftest infrastructure, getting it
running successfully on more platforms, and fixing bugs in it.
- Additions to the vDSO getrandom & chacha selftests. Basically every
time manual review unearthed a bug in a revision of an arch patch,
or an ambiguity, the tests were augmented.
By the time the last arch was submitted for review, s390x, v1 of
the series was essentially fine right out of the gate.
- Fixes to the the generic C implementation of vDSO getrandom, to
build and run successfully on all archs, decoupling it from
assumptions we had (unintentionally) made on x86_64 that didn't
carry through to the other architectures.
- Port of vDSO getrandom to LoongArch64, from Xi Ruoyao and acked by
Huacai Chen.
- Port of vDSO getrandom to ARM64, from Adhemerval Zanella and acked
by Will Deacon.
- Port of vDSO getrandom to PowerPC, in both 32-bit and 64-bit
varieties, from Christophe Leroy and acked by Michael Ellerman.
- Port of vDSO getrandom to S390X from Heiko Carstens, the arch
maintainer.
While it'd be natural for there to be things to fix up over the course
of the development cycle, these patches got a decent amount of review
from a fairly diverse crew of folks on the mailing lists, and, for the
most part, they've been cooking in linux-next, which has been helpful
for ironing out build issues.
In terms of architectures, I think that mostly takes care of the
important 64-bit archs with hardware still being produced and running
production loads in settings where vDSO getrandom is likely to help.
Arguably there's still RISC-V left, and we'll see for 6.13 whether
they find it useful and submit a port"
* tag 'random-6.12-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random: (47 commits)
selftests: vDSO: check cpu caps before running chacha test
s390/vdso: Wire up getrandom() vdso implementation
s390/vdso: Move vdso symbol handling to separate header file
s390/vdso: Allow alternatives in vdso code
s390/module: Provide find_section() helper
s390/facility: Let test_facility() generate static branch if possible
s390/alternatives: Remove ALT_FACILITY_EARLY
s390/facility: Disable compile time optimization for decompressor code
selftests: vDSO: fix vdso_config for s390
selftests: vDSO: fix ELF hash table entry size for s390x
powerpc/vdso: Wire up getrandom() vDSO implementation on VDSO64
powerpc/vdso: Wire up getrandom() vDSO implementation on VDSO32
powerpc/vdso: Refactor CFLAGS for CVDSO build
powerpc/vdso32: Add crtsavres
mm: Define VM_DROPPABLE for powerpc/32
powerpc/vdso: Fix VDSO data access when running in a non-root time namespace
selftests: vDSO: don't include generated headers for chacha test
arm64: vDSO: Wire up getrandom() vDSO implementation
arm64: alternative: make alternative_has_cap_likely() VDSO compatible
selftests: vDSO: also test counter in vdso_test_chacha
...
|
||
|
Linus Torvalds
|
39b3f4e0db |
hardening updates for v6.12-rc1
- lib/string_choices: Add str_up_down() helper (Michal Wajdeczko)
- lib/string_choices: Add str_true_false()/str_false_true() helper
(Hongbo Li)
- lib/string_choices: Introduce several opposite string choice helpers
(Hongbo Li)
- lib/string_helpers: rework overflow-dependent code (Justin Stitt)
- fortify: refactor test_fortify Makefile to fix some build problems
(Masahiro Yamada)
- string: Check for "nonstring" attribute on strscpy() arguments
- virt: vbox: Replace 1-element arrays with flexible arrays
- media: venus: hfi_cmds: Replace 1-element arrays with flexible arrays
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Merge tag 'hardening-v6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
- lib/string_choices:
- Add str_up_down() helper (Michal Wajdeczko)
- Add str_true_false()/str_false_true() helper (Hongbo Li)
- Introduce several opposite string choice helpers (Hongbo Li)
- lib/string_helpers:
- rework overflow-dependent code (Justin Stitt)
- fortify: refactor test_fortify Makefile to fix some build problems
(Masahiro Yamada)
- string: Check for "nonstring" attribute on strscpy() arguments
- virt: vbox: Replace 1-element arrays with flexible arrays
- media: venus: hfi_cmds: Replace 1-element arrays with flexible arrays
* tag 'hardening-v6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
lib/string_choices: Add some comments to make more clear for string choices helpers.
lib/string_choices: Introduce several opposite string choice helpers
lib/string_choices: Add str_true_false()/str_false_true() helper
string: Check for "nonstring" attribute on strscpy() arguments
media: venus: hfi_cmds: struct hfi_session_release_buffer_pkt: Add __counted_by annotation
media: venus: hfi_cmds: struct hfi_session_release_buffer_pkt: Replace 1-element array with flexible array
virt: vbox: struct vmmdev_hgcm_pagelist: Replace 1-element array with flexible array
lib/string_helpers: rework overflow-dependent code
coccinelle: Add rules to find str_down_up() replacements
string_choices: Add wrapper for str_down_up()
coccinelle: Add rules to find str_up_down() replacements
lib/string_choices: Add str_up_down() helper
fortify: use if_changed_dep to record header dependency in *.cmd files
fortify: move test_fortify.sh to lib/test_fortify/
fortify: refactor test_fortify Makefile to fix some build problems
|
||
|
Linus Torvalds
|
bdf56c7580 |
slab updates for 6.12
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Merge tag 'slab-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab updates from Vlastimil Babka:
"This time it's mostly refactoring and improving APIs for slab users in
the kernel, along with some debugging improvements.
- kmem_cache_create() refactoring (Christian Brauner)
Over the years have been growing new parameters to
kmem_cache_create() where most of them are needed only for a small
number of caches - most recently the rcu_freeptr_offset parameter.
To avoid adding new parameters to kmem_cache_create() and adjusting
all its callers, or creating new wrappers such as
kmem_cache_create_rcu(), we can now pass extra parameters using the
new struct kmem_cache_args. Not explicitly initialized fields
default to values interpreted as unused.
kmem_cache_create() is for now a wrapper that works both with the
new form: kmem_cache_create(name, object_size, args, flags) and the
legacy form: kmem_cache_create(name, object_size, align, flags,
ctor)
- kmem_cache_destroy() waits for kfree_rcu()'s in flight (Vlastimil
Babka, Uladislau Rezki)
Since SLOB removal, kfree() is allowed for freeing objects
allocated by kmem_cache_create(). By extension kfree_rcu() as
allowed as well, which can allow converting simple call_rcu()
callbacks that only do kmem_cache_free(), as there was never a
kmem_cache_free_rcu() variant. However, for caches that can be
destroyed e.g. on module removal, the cache owners knew to issue
rcu_barrier() first to wait for the pending call_rcu()'s, and this
is not sufficient for pending kfree_rcu()'s due to its internal
batching optimizations. Ulad has provided a new
kvfree_rcu_barrier() and to make the usage less error-prone,
kmem_cache_destroy() calls it. Additionally, destroying
SLAB_TYPESAFE_BY_RCU caches now again issues rcu_barrier()
synchronously instead of using an async work, because the past
motivation for async work no longer applies. Users of custom
call_rcu() callbacks should however keep calling rcu_barrier()
before cache destruction.
- Debugging use-after-free in SLAB_TYPESAFE_BY_RCU caches (Jann Horn)
Currently, KASAN cannot catch UAFs in such caches as it is legal to
access them within a grace period, and we only track the grace
period when trying to free the underlying slab page. The new
CONFIG_SLUB_RCU_DEBUG option changes the freeing of individual
object to be RCU-delayed, after which KASAN can poison them.
- Delayed memcg charging (Shakeel Butt)
In some cases, the memcg is uknown at allocation time, such as
receiving network packets in softirq context. With
kmem_cache_charge() these may be now charged later when the user
and its memcg is known.
- Misc fixes and improvements (Pedro Falcato, Axel Rasmussen,
Christoph Lameter, Yan Zhen, Peng Fan, Xavier)"
* tag 'slab-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: (34 commits)
mm, slab: restore kerneldoc for kmem_cache_create()
io_uring: port to struct kmem_cache_args
slab: make __kmem_cache_create() static inline
slab: make kmem_cache_create_usercopy() static inline
slab: remove kmem_cache_create_rcu()
file: port to struct kmem_cache_args
slab: create kmem_cache_create() compatibility layer
slab: port KMEM_CACHE_USERCOPY() to struct kmem_cache_args
slab: port KMEM_CACHE() to struct kmem_cache_args
slab: remove rcu_freeptr_offset from struct kmem_cache
slab: pass struct kmem_cache_args to do_kmem_cache_create()
slab: pull kmem_cache_open() into do_kmem_cache_create()
slab: pass struct kmem_cache_args to create_cache()
slab: port kmem_cache_create_usercopy() to struct kmem_cache_args
slab: port kmem_cache_create_rcu() to struct kmem_cache_args
slab: port kmem_cache_create() to struct kmem_cache_args
slab: add struct kmem_cache_args
slab: s/__kmem_cache_create/do_kmem_cache_create/g
memcg: add charging of already allocated slab objects
mm/slab: Optimize the code logic in find_mergeable()
...
|
||
|
Linus Torvalds
|
067610ebaa |
RCU pull request for v6.12
This pull request contains the following branches:
context_tracking.15.08.24a: Rename context tracking state related
symbols and remove references to "dynticks" in various context
tracking state variables and related helpers; force
context_tracking_enabled_this_cpu() to be inlined to avoid
leaving a noinstr section.
csd.lock.15.08.24a: Enhance CSD-lock diagnostic reports; add an API
to provide an indication of ongoing CSD-lock stall.
nocb.09.09.24a: Update and simplify RCU nocb code to handle
(de-)offloading of callbacks only for offline CPUs; fix RT
throttling hrtimer being armed from offline CPU.
rcutorture.14.08.24a: Remove redundant rcu_torture_ops get_gp_completed
fields; add SRCU ->same_gp_state and ->get_comp_state
functions; add generic test for NUM_ACTIVE_*RCU_POLL* for
testing RCU and SRCU polled grace periods; add CFcommon.arch
for arch-specific Kconfig options; print number of update types
in rcu_torture_write_types();
add rcutree.nohz_full_patience_delay testing to the TREE07
scenario; add a stall_cpu_repeat module parameter to test
repeated CPU stalls; add argument to limit number of CPUs a
guest OS can use in torture.sh;
rcustall.09.09.24a: Abbreviate RCU CPU stall warnings during CSD-lock
stalls; Allow dump_cpu_task() to be called without disabling
preemption; defer printing stall-warning backtrace when holding
rcu_node lock.
srcu.12.08.24a: Make SRCU gp seq wrap-around faster; add KCSAN checks
for concurrent updates to ->srcu_n_exp_nodelay and
->reschedule_count which are used in heuristics governing
auto-expediting of normal SRCU grace periods and
grace-period-state-machine delays; mark idle SRCU-barrier
callbacks to help identify stuck SRCU-barrier callback.
rcu.tasks.14.08.24a: Remove RCU Tasks Rude asynchronous APIs as they
are no longer used; stop testing RCU Tasks Rude asynchronous
APIs; fix access to non-existent percpu regions; check
processor-ID assumptions during chosen CPU calculation for
callback enqueuing; update description of rtp->tasks_gp_seq
grace-period sequence number; add rcu_barrier_cb_is_done()
to identify whether a given rcu_barrier callback is stuck;
mark idle Tasks-RCU-barrier callbacks; add
*torture_stats_print() functions to print detailed
diagnostics for Tasks-RCU variants; capture start time of
rcu_barrier_tasks*() operation to help distinguish a hung
barrier operation from a long series of barrier operations.
rcu_scaling_tests.15.08.24a:
refscale: Add a TINY scenario to support tests of Tiny RCU
and Tiny SRCU; Optimize process_durations() operation;
rcuscale: Dump stacks of stalled rcu_scale_writer() instances;
dump grace-period statistics when rcu_scale_writer() stalls;
mark idle RCU-barrier callbacks to identify stuck RCU-barrier
callbacks; print detailed grace-period and barrier diagnostics
on rcu_scale_writer() hangs for Tasks-RCU variants; warn if
async module parameter is specified for RCU implementations
that do not have async primitives such as RCU Tasks Rude;
make all writer tasks report upon hang; tolerate repeated
GFP_KERNEL failure in rcu_scale_writer(); use special allocator
for rcu_scale_writer(); NULL out top-level pointers to heap
memory to avoid double-free bugs on modprobe failures; maintain
per-task instead of per-CPU callbacks count to avoid any issues
with migration of either tasks or callbacks; constify struct
ref_scale_ops.
fixes.12.08.24a: Use system_unbound_wq for kfree_rcu work to avoid
disturbing isolated CPUs.
misc.11.08.24a: Warn on unexpected rcu_state.srs_done_tail state;
Better define "atomic" for list_replace_rcu() and
hlist_replace_rcu() routines; annotate struct
kvfree_rcu_bulk_data with __counted_by().
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Merge tag 'rcu.release.v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Neeraj Upadhyay:
"Context tracking:
- rename context tracking state related symbols and remove references
to "dynticks" in various context tracking state variables and
related helpers
- force context_tracking_enabled_this_cpu() to be inlined to avoid
leaving a noinstr section
CSD lock:
- enhance CSD-lock diagnostic reports
- add an API to provide an indication of ongoing CSD-lock stall
nocb:
- update and simplify RCU nocb code to handle (de-)offloading of
callbacks only for offline CPUs
- fix RT throttling hrtimer being armed from offline CPU
rcutorture:
- remove redundant rcu_torture_ops get_gp_completed fields
- add SRCU ->same_gp_state and ->get_comp_state functions
- add generic test for NUM_ACTIVE_*RCU_POLL* for testing RCU and SRCU
polled grace periods
- add CFcommon.arch for arch-specific Kconfig options
- print number of update types in rcu_torture_write_types()
- add rcutree.nohz_full_patience_delay testing to the TREE07 scenario
- add a stall_cpu_repeat module parameter to test repeated CPU stalls
- add argument to limit number of CPUs a guest OS can use in
torture.sh
rcustall:
- abbreviate RCU CPU stall warnings during CSD-lock stalls
- Allow dump_cpu_task() to be called without disabling preemption
- defer printing stall-warning backtrace when holding rcu_node lock
srcu:
- make SRCU gp seq wrap-around faster
- add KCSAN checks for concurrent updates to ->srcu_n_exp_nodelay and
->reschedule_count which are used in heuristics governing
auto-expediting of normal SRCU grace periods and
grace-period-state-machine delays
- mark idle SRCU-barrier callbacks to help identify stuck
SRCU-barrier callback
rcu tasks:
- remove RCU Tasks Rude asynchronous APIs as they are no longer used
- stop testing RCU Tasks Rude asynchronous APIs
- fix access to non-existent percpu regions
- check processor-ID assumptions during chosen CPU calculation for
callback enqueuing
- update description of rtp->tasks_gp_seq grace-period sequence
number
- add rcu_barrier_cb_is_done() to identify whether a given
rcu_barrier callback is stuck
- mark idle Tasks-RCU-barrier callbacks
- add *torture_stats_print() functions to print detailed diagnostics
for Tasks-RCU variants
- capture start time of rcu_barrier_tasks*() operation to help
distinguish a hung barrier operation from a long series of barrier
operations
refscale:
- add a TINY scenario to support tests of Tiny RCU and Tiny
SRCU
- optimize process_durations() operation
rcuscale:
- dump stacks of stalled rcu_scale_writer() instances and
grace-period statistics when rcu_scale_writer() stalls
- mark idle RCU-barrier callbacks to identify stuck RCU-barrier
callbacks
- print detailed grace-period and barrier diagnostics on
rcu_scale_writer() hangs for Tasks-RCU variants
- warn if async module parameter is specified for RCU implementations
that do not have async primitives such as RCU Tasks Rude
- make all writer tasks report upon hang
- tolerate repeated GFP_KERNEL failure in rcu_scale_writer()
- use special allocator for rcu_scale_writer()
- NULL out top-level pointers to heap memory to avoid double-free
bugs on modprobe failures
- maintain per-task instead of per-CPU callbacks count to avoid any
issues with migration of either tasks or callbacks
- constify struct ref_scale_ops
Fixes:
- use system_unbound_wq for kfree_rcu work to avoid disturbing
isolated CPUs
Misc:
- warn on unexpected rcu_state.srs_done_tail state
- better define "atomic" for list_replace_rcu() and
hlist_replace_rcu() routines
- annotate struct kvfree_rcu_bulk_data with __counted_by()"
* tag 'rcu.release.v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (90 commits)
rcu: Defer printing stall-warning backtrace when holding rcu_node lock
rcu/nocb: Remove superfluous memory barrier after bypass enqueue
rcu/nocb: Conditionally wake up rcuo if not already waiting on GP
rcu/nocb: Fix RT throttling hrtimer armed from offline CPU
rcu/nocb: Simplify (de-)offloading state machine
context_tracking: Tag context_tracking_enabled_this_cpu() __always_inline
context_tracking, rcu: Rename rcu_dyntick trace event into rcu_watching
rcu: Update stray documentation references to rcu_dynticks_eqs_{enter, exit}()
rcu: Rename rcu_momentary_dyntick_idle() into rcu_momentary_eqs()
rcu: Rename rcu_implicit_dynticks_qs() into rcu_watching_snap_recheck()
rcu: Rename dyntick_save_progress_counter() into rcu_watching_snap_save()
rcu: Rename struct rcu_data .exp_dynticks_snap into .exp_watching_snap
rcu: Rename struct rcu_data .dynticks_snap into .watching_snap
rcu: Rename rcu_dynticks_zero_in_eqs() into rcu_watching_zero_in_eqs()
rcu: Rename rcu_dynticks_in_eqs_since() into rcu_watching_snap_stopped_since()
rcu: Rename rcu_dynticks_in_eqs() into rcu_watching_snap_in_eqs()
rcu: Rename rcu_dynticks_eqs_online() into rcu_watching_online()
context_tracking, rcu: Rename rcu_dynticks_curr_cpu_in_eqs() into rcu_is_watching_curr_cpu()
context_tracking, rcu: Rename rcu_dynticks_task*() into rcu_task*()
refscale: Constify struct ref_scale_ops
...
|
||
|
Linus Torvalds
|
78567e2bc7 |
cgroup: Changes for v6.12
- cpuset isolation improvements. - cpuset cgroup1 support is split into its own file behind the new config option CONFIG_CPUSET_V1. This makes it the second controller which makes cgroup1 support optional after memcg. - Handling of unavailable v1 controller handling improved during cgroup1 mount operations. - union_find applied to cpuset. It makes code simpler and more efficient. - Reduce spurious events in pids.events. - Cleanups and other misc changes. - Contains a merge of cgroup/for-6.11-fixes to receive cpuset fixes that further changes build upon. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCZuNU3Q4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGdMsAP9yqPxu//LiJ3lPWhKcVVKtdwrA3AYDLE81VSJO 5VZJhAD+Ic+Ly/jZjDtjjQpZ1U3JsBpBRcVBqzeH0gD7eXaJgwk= =h/+c -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - cpuset isolation improvements - cpuset cgroup1 support is split into its own file behind the new config option CONFIG_CPUSET_V1. This makes it the second controller which makes cgroup1 support optional after memcg - Handling of unavailable v1 controller handling improved during cgroup1 mount operations - union_find applied to cpuset. It makes code simpler and more efficient - Reduce spurious events in pids.events - Cleanups and other misc changes - Contains a merge of cgroup/for-6.11-fixes to receive cpuset fixes that further changes build upon * tag 'cgroup-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (34 commits) cgroup: Do not report unavailable v1 controllers in /proc/cgroups cgroup: Disallow mounting v1 hierarchies without controller implementation cgroup/cpuset: Expose cpuset filesystem with cpuset v1 only cgroup/cpuset: Move cpu.h include to cpuset-internal.h cgroup/cpuset: add sefltest for cpuset v1 cgroup/cpuset: guard cpuset-v1 code under CONFIG_CPUSETS_V1 cgroup/cpuset: rename functions shared between v1 and v2 cgroup/cpuset: move v1 interfaces to cpuset-v1.c cgroup/cpuset: move validate_change_legacy to cpuset-v1.c cgroup/cpuset: move legacy hotplug update to cpuset-v1.c cgroup/cpuset: add callback_lock helper cgroup/cpuset: move memory_spread to cpuset-v1.c cgroup/cpuset: move relax_domain_level to cpuset-v1.c cgroup/cpuset: move memory_pressure to cpuset-v1.c cgroup/cpuset: move common code to cpuset-internal.h cgroup/cpuset: introduce cpuset-v1.c selftest/cgroup: Make test_cpuset_prs.sh deal with pre-isolated CPUs cgroup/cpuset: Account for boot time isolated CPUs cgroup/cpuset: remove use_parent_ecpus of cpuset cgroup/cpuset: remove fetch_xcpus ... |
||
|
Linus Torvalds
|
194fcd20eb |
linux_kselftest-kunit-6.12-rc1
This kunit update for Linux 6.12-rc1 consists of:
-- a new int_pow test suite
-- documentation update to clarify filename best practices
-- kernel-doc fix for EXPORT_SYMBOL_IF_KUNIT
-- change to build compile_commands.json automatically instead
of requiring a manual build.
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Merge tag 'linux_kselftest-kunit-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit updates from Shuah Khan:
- a new int_pow test suite
- documentation update to clarify filename best practices
- kernel-doc fix for EXPORT_SYMBOL_IF_KUNIT
- change to build compile_commands.json automatically instead of
requiring a manual build
* tag 'linux_kselftest-kunit-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
lib/math: Add int_pow test suite
kunit: tool: Build compile_commands.json
kunit: Fix kernel-doc for EXPORT_SYMBOL_IF_KUNIT
Documentation: KUnit: Update filename best practices
|
||
|
Linus Torvalds
|
dea435d397 |
Enable UBSAN traps for x86, which provides better reporting through
metadata encodeded into UD1. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmbpM6ITHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoU/kEACWS7Z9mQrWB3r22ufTTPoN+hNudth+ CP8wluXZGvLPh1Pq9dpB9ZniBUN8levYoGyj3NTdr6VtoMJ6NYcZVuH98lCCEMXO 1UmDpydSGZ3BqVgmf4h0eYAJgEiA5qTflXMsh6SfsaPQR7jniJTE451hgJdRIogG DvgWeVTYn5vt0+oRHJp6ogRLR9oOUgdp94fIwaW34OpesbVJeWUW9zAvBcqdNrDT KJIM7ta6eivEakFRxriQZTKRc+3ElvZ2fdWNdo9qrRd64MTIOTXAj3G0lXt3YtpZ 06pfJ1CfQ+nwHKfxmmy4gz4eJG7KcpMM+KFZTR3NoSAz4oMTzAvVTxAuEt+pahx6 bmLzaY/I/gRB/Rt+e5oEZSEIq+Sh/Lm3IZoQUhK0+HeJBjwPghBZw3BjkFJvEsMw S0arvklH2x37gP9rnzOODf2QG7aIAqLTrvRJS610fctwadR4k+2UIE8ZGHOTt55J UdiK/QhU4gMVaRTebTcPquu3IMmnJjla/bEWdIrBtOSiGtVd1BnAp/kvmkdQH3eI ZUqJbnfofN4rzSufFqSVY88ORVIcQMnNDLM0qyJofIC79u7OiU40icoDxWS6mDHQ wQSEszInhwNzyAxoHnNkXDunjDVKhATQPOde0F4TxLcrYD9KRpvJag/1j5fCQi+0 ftODZflfGS2UjQ== =Z5Hg -----END PGP SIGNATURE----- Merge tag 'x86-core-2024-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 core update from Thomas Gleixner: "Enable UBSAN traps for x86, which provides better reporting through metadata encodeded into UD1" * tag 'x86-core-2024-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/traps: Enable UBSAN traps on x86 |
||
|
Linus Torvalds
|
5ba202a7c9 |
Updates for KCOV instrumentation on x86:
- Prevent spurious KCOV coverage in common_interrupt()
- Fixup the KCOV Makefile directive which got stale due to a source file
rename
- Exclude stack unwinding from KCOV as it creates large amounts of
uninteresting coverage
- Provide a self test to validate that KCOV coverage of the interrupt
handling code starts not before preempt count got updated.
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Merge tag 'x86-build-2024-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build updates from Thomas Gleixner:
"Updates for KCOV instrumentation on x86:
- Prevent spurious KCOV coverage in common_interrupt()
- Fixup the KCOV Makefile directive which got stale due to a source
file rename
- Exclude stack unwinding from KCOV as it creates large amounts of
uninteresting coverage
- Provide a self test to validate that KCOV coverage of the interrupt
handling code starts not before preempt count got updated"
* tag 'x86-build-2024-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Ignore stack unwinding in KCOV
module: Fix KCOV-ignored file name
kcov: Add interrupt handling self test
x86/entry: Remove unwanted instrumentation in common_interrupt()
|
||
|
I Hsin Cheng
|
5e06e08939 |
list: test: increase coverage of list_test_list_replace*()
Increase the test coverage of list_test_list_replace*() by adding the checks to compare the pointer of "a_new.next" and "a_new.prev" to make sure a perfect circular doubly linked list is formed after the replacement. Link: https://lkml.kernel.org/r/20240910040818.65723-1-richard120310@gmail.com Signed-off-by: I Hsin Cheng <richard120310@gmail.com> Cc: David Gow <davidgow@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
I Hsin Cheng
|
e620799c41 |
list: test: fix tests for list_cut_position()
Fix test for list_cut_position*() for the missing check of integer "i" after the second loop. The variable should be checked for second time to make sure both lists after the cut operation are formed as expected. Link: https://lkml.kernel.org/r/20240910043531.71343-1-richard120310@gmail.com Signed-off-by: I Hsin Cheng <richard120310@gmail.com> Cc: David Gow <davidgow@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Huang Ying
|
99185c10d5 |
resource, kunit: add test case for region_intersects()
Patch series "resource: Fix region_intersects() vs add_memory_driver_managed()", v3. The patchset fixes a bug of region_intersects() for systems with CXL memory. The details of the bug can be found in [1/3]. To avoid similar bugs in the future. A kunit test case for region_intersects() is added in [3/3]. [2/3] is a preparation patch for [3/3]. This patch (of 3): region_intersects() is important because it's used for /dev/mem permission checking. To avoid possible bug of region_intersects() in the future, a kunit test case for region_intersects() is added. Link: https://lkml.kernel.org/r/20240906030713.204292-1-ying.huang@intel.com Link: https://lkml.kernel.org/r/20240906030713.204292-4-ying.huang@intel.com Signed-off-by: "Huang, Ying" <ying.huang@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Jonathan Cameron <jonathan.cameron@huawei.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Alison Schofield <alison.schofield@intel.com> Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Ira Weiny <ira.weiny@intel.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Baoquan He <bhe@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
daa394f0f9 |
A set of updates for debugobjects:
- Use the threshold to check for the pool refill condition and not the
run time recorded all time low fill value, which is lower than the
threshold and therefore causes refills to be delayed.
- KCSAN annotation updates and simplification of the fill_pool() code.
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Merge tag 'core-debugobjects-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull debugobjects updates from Thomas Gleixner:
- Use the threshold to check for the pool refill condition and not the
run time recorded all time low fill value, which is lower than the
threshold and therefore causes refills to be delayed.
- KCSAN annotation updates and simplification of the fill_pool() code.
* tag 'core-debugobjects-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
debugobjects: Remove redundant checks in fill_pool()
debugobjects: Fix conditions in fill_pool()
debugobjects: Fix the compilation attributes of some global variables
|
||
|
Linus Torvalds
|
9ea925c806 |
Updates for timers and timekeeping:
- Core:
- Overhaul of posix-timers in preparation of removing the
workaround for periodic timers which have signal delivery
ignored.
- Remove the historical extra jiffie in msleep()
msleep() adds an extra jiffie to the timeout value to ensure
minimal sleep time. The timer wheel ensures minimal sleep
time since the large rewrite to a non-cascading wheel, but the
extra jiffie in msleep() remained unnoticed. Remove it.
- Make the timer slack handling correct for realtime tasks.
The procfs interface is inconsistent and does neither reflect
reality nor conforms to the man page. Show the correct 0 slack
for real time tasks and enforce it at the core level instead of
having inconsistent individual checks in various timer setup
functions.
- The usual set of updates and enhancements all over the place.
- Drivers:
- Allow the ACPI PM timer to be turned off during suspend
- No new drivers
- The usual updates and enhancements in various drivers
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Merge tag 'timers-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"Core:
- Overhaul of posix-timers in preparation of removing the workaround
for periodic timers which have signal delivery ignored.
- Remove the historical extra jiffie in msleep()
msleep() adds an extra jiffie to the timeout value to ensure
minimal sleep time. The timer wheel ensures minimal sleep time
since the large rewrite to a non-cascading wheel, but the extra
jiffie in msleep() remained unnoticed. Remove it.
- Make the timer slack handling correct for realtime tasks.
The procfs interface is inconsistent and does neither reflect
reality nor conforms to the man page. Show the correct 0 slack for
real time tasks and enforce it at the core level instead of having
inconsistent individual checks in various timer setup functions.
- The usual set of updates and enhancements all over the place.
Drivers:
- Allow the ACPI PM timer to be turned off during suspend
- No new drivers
- The usual updates and enhancements in various drivers"
* tag 'timers-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits)
ntp: Make sure RTC is synchronized when time goes backwards
treewide: Fix wrong singular form of jiffies in comments
cpu: Use already existing usleep_range()
timers: Rename next_expiry_recalc() to be unique
platform/x86:intel/pmc: Fix comment for the pmc_core_acpi_pm_timer_suspend_resume function
clocksource/drivers/jcore: Use request_percpu_irq()
clocksource/drivers/cadence-ttc: Add missing clk_disable_unprepare in ttc_setup_clockevent
clocksource/drivers/asm9260: Add missing clk_disable_unprepare in asm9260_timer_init
clocksource/drivers/qcom: Add missing iounmap() on errors in msm_dt_timer_init()
clocksource/drivers/ingenic: Use devm_clk_get_enabled() helpers
platform/x86:intel/pmc: Enable the ACPI PM Timer to be turned off when suspended
clocksource: acpi_pm: Add external callback for suspend/resume
clocksource/drivers/arm_arch_timer: Using for_each_available_child_of_node_scoped()
dt-bindings: timer: rockchip: Add rk3576 compatible
timers: Annotate possible non critical data race of next_expiry
timers: Remove historical extra jiffie for timeout in msleep()
hrtimer: Use and report correct timerslack values for realtime tasks
hrtimer: Annotate hrtimer_cpu_base_.*_expiry() for sparse.
timers: Add sparse annotation for timer_sync_wait_running().
signal: Replace BUG_ON()s
...
|
||
|
Linus Torvalds
|
cb69d86550 |
Updates for the interrupt subsystem:
- Core:
- Remove a global lock in the affinity setting code
The lock protects a cpumask for intermediate results and the lock
causes a bottleneck on simultaneous start of multiple virtual
machines. Replace the lock and the static cpumask with a per CPU
cpumask which is nicely serialized by raw spinlock held when
executing this code.
- Provide support for giving a suffix to interrupt domain names.
That's required to support devices with subfunctions so that the
domain names are distinct even if they originate from the same
device node.
- The usual set of cleanups and enhancements all over the place
- Drivers:
- Support for longarch AVEC interrupt chip
- Refurbishment of the Armada driver so it can be extended for new
variants.
- The usual set of cleanups and enhancements all over the place
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Merge tag 'irq-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner:
"Core:
- Remove a global lock in the affinity setting code
The lock protects a cpumask for intermediate results and the lock
causes a bottleneck on simultaneous start of multiple virtual
machines. Replace the lock and the static cpumask with a per CPU
cpumask which is nicely serialized by raw spinlock held when
executing this code.
- Provide support for giving a suffix to interrupt domain names.
That's required to support devices with subfunctions so that the
domain names are distinct even if they originate from the same
device node.
- The usual set of cleanups and enhancements all over the place
Drivers:
- Support for longarch AVEC interrupt chip
- Refurbishment of the Armada driver so it can be extended for new
variants.
- The usual set of cleanups and enhancements all over the place"
* tag 'irq-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (73 commits)
genirq: Use cpumask_intersects()
genirq/cpuhotplug: Use cpumask_intersects()
irqchip/apple-aic: Only access system registers on SoCs which provide them
irqchip/apple-aic: Add a new "Global fast IPIs only" feature level
irqchip/apple-aic: Skip unnecessary enabling of use_fast_ipi
dt-bindings: apple,aic: Document A7-A11 compatibles
irqdomain: Use IS_ERR_OR_NULL() in irq_domain_trim_hierarchy()
genirq/msi: Use kmemdup_array() instead of kmemdup()
genirq/proc: Change the return value for set affinity permission error
genirq/proc: Use irq_move_pending() in show_irq_affinity()
genirq/proc: Correctly set file permissions for affinity control files
genirq: Get rid of global lock in irq_do_set_affinity()
genirq: Fix typo in struct comment
irqchip/loongarch-avec: Add AVEC irqchip support
irqchip/loongson-pch-msi: Prepare get_pch_msi_handle() for AVECINTC
irqchip/loongson-eiointc: Rename CPUHP_AP_IRQ_LOONGARCH_STARTING
LoongArch: Architectural preparation for AVEC irqchip
LoongArch: Move irqchip function prototypes to irq-loongson.h
irqchip/loongson-pch-msi: Switch to MSI parent domains
softirq: Remove unused 'action' parameter from action callback
...
|
||
|
Linus Torvalds
|
35219bc5c7 |
vfs-6.12.netfs
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Merge tag 'vfs-6.12.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull netfs updates from Christian Brauner:
"This contains the work to improve read/write performance for the new
netfs library.
The main performance enhancing changes are:
- Define a structure, struct folio_queue, and a new iterator type,
ITER_FOLIOQ, to hold a buffer as a replacement for ITER_XARRAY. See
that patch for questions about naming and form.
ITER_FOLIOQ is provided as a replacement for ITER_XARRAY. The
problem with an xarray is that accessing it requires the use of a
lock (typically the RCU read lock) - and this means that we can't
supply iterate_and_advance() with a step function that might sleep
(crypto for example) without having to drop the lock between pages.
ITER_FOLIOQ is the iterator for a chain of folio_queue structs,
where each folio_queue holds a small list of folios. A folio_queue
struct is a simpler structure than xarray and is not subject to
concurrent manipulation by the VM. folio_queue is used rather than
a bvec[] as it can form lists of indefinite size, adding to one end
and removing from the other on the fly.
- Provide a copy_folio_from_iter() wrapper.
- Make cifs RDMA support ITER_FOLIOQ.
- Use folio queues in the write-side helpers instead of xarrays.
- Add a function to reset the iterator in a subrequest.
- Simplify the write-side helpers to use sheaves to skip gaps rather
than trying to work out where gaps are.
- In afs, make the read subrequests asynchronous, putting them into
work items to allow the next patch to do progressive
unlocking/reading.
- Overhaul the read-side helpers to improve performance.
- Fix the caching of a partial block at the end of a file.
- Allow a store to be cancelled.
Then some changes for cifs to make it use folio queues instead of
xarrays for crypto bufferage:
- Use raw iteration functions rather than manually coding iteration
when hashing data.
- Switch to using folio_queue for crypto buffers.
- Remove the xarray bits.
Make some adjustments to the /proc/fs/netfs/stats file such that:
- All the netfs stats lines begin 'Netfs:' but change this to
something a bit more useful.
- Add a couple of stats counters to track the numbers of skips and
waits on the per-inode writeback serialisation lock to make it
easier to check for this as a source of performance loss.
Miscellaneous work:
- Ensure that the sb_writers lock is taken around
vfs_{set,remove}xattr() in the cachefiles code.
- Reduce the number of conditional branches in netfs_perform_write().
- Move the CIFS_INO_MODIFIED_ATTR flag to the netfs_inode struct and
remove cifs_post_modify().
- Move the max_len/max_nr_segs members from netfs_io_subrequest to
netfs_io_request as they're only needed for one subreq at a time.
- Add an 'unknown' source value for tracing purposes.
- Remove NETFS_COPY_TO_CACHE as it's no longer used.
- Set the request work function up front at allocation time.
- Use bh-disabling spinlocks for rreq->lock as cachefiles completion
may be run from block-filesystem DIO completion in softirq context.
- Remove fs/netfs/io.c"
* tag 'vfs-6.12.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (25 commits)
docs: filesystems: corrected grammar of netfs page
cifs: Don't support ITER_XARRAY
cifs: Switch crypto buffer to use a folio_queue rather than an xarray
cifs: Use iterate_and_advance*() routines directly for hashing
netfs: Cancel dirty folios that have no storage destination
cachefiles, netfs: Fix write to partial block at EOF
netfs: Remove fs/netfs/io.c
netfs: Speed up buffered reading
afs: Make read subreqs async
netfs: Simplify the writeback code
netfs: Provide an iterator-reset function
netfs: Use new folio_queue data type and iterator instead of xarray iter
cifs: Provide the capability to extract from ITER_FOLIOQ to RDMA SGEs
iov_iter: Provide copy_folio_from_iter()
mm: Define struct folio_queue and ITER_FOLIOQ to handle a sequence of folios
netfs: Use bh-disabling spinlocks for rreq->lock
netfs: Set the request work function upon allocation
netfs: Remove NETFS_COPY_TO_CACHE
netfs: Reserve netfs_sreq_source 0 as unset/unknown
netfs: Move max_len/max_nr_segs from netfs_io_subrequest to netfs_io_stream
...
|
||
|
Linus Torvalds
|
85ffc6e4ed |
This update includes the following changes:
API:
- Make self-test asynchronous.
Algorithms:
- Remove MPI functions added for SM3.
- Add allocation error checks to remaining MPI functions (introduced for SM3).
- Set default Jitter RNG OSR to 3.
Drivers:
- Add hwrng driver for Rockchip RK3568 SoC.
- Allow disabling SR-IOV VFs through sysfs in qat.
- Fix device reset bugs in hisilicon.
- Fix authenc key parsing by using generic helper in octeontx*.
Others:
- Fix xor benchmarking on parisc.
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Merge tag 'v6.12-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto update from Herbert Xu"
"API:
- Make self-test asynchronous
Algorithms:
- Remove MPI functions added for SM3
- Add allocation error checks to remaining MPI functions (introduced
for SM3)
- Set default Jitter RNG OSR to 3
Drivers:
- Add hwrng driver for Rockchip RK3568 SoC
- Allow disabling SR-IOV VFs through sysfs in qat
- Fix device reset bugs in hisilicon
- Fix authenc key parsing by using generic helper in octeontx*
Others:
- Fix xor benchmarking on parisc"
* tag 'v6.12-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (96 commits)
crypto: n2 - Set err to EINVAL if snprintf fails for hmac
crypto: camm/qi - Use ERR_CAST() to return error-valued pointer
crypto: mips/crc32 - Clean up useless assignment operations
crypto: qcom-rng - rename *_of_data to *_match_data
crypto: qcom-rng - fix support for ACPI-based systems
dt-bindings: crypto: qcom,prng: document support for SA8255p
crypto: aegis128 - Fix indentation issue in crypto_aegis128_process_crypt()
crypto: octeontx* - Select CRYPTO_AUTHENC
crypto: testmgr - Hide ENOENT errors
crypto: qat - Remove trailing space after \n newline
crypto: hisilicon/sec - Remove trailing space after \n newline
crypto: algboss - Pass instance creation error up
crypto: api - Fix generic algorithm self-test races
crypto: hisilicon/qm - inject error before stopping queue
crypto: hisilicon/hpre - mask cluster timeout error
crypto: hisilicon/qm - reset device before enabling it
crypto: hisilicon/trng - modifying the order of header files
crypto: hisilicon - add a lock for the qp send operation
crypto: hisilicon - fix missed error branch
crypto: ccp - do not request interrupt on cmd completion when irqs disabled
...
|
||
|
Masahiro Yamada
|
5277d13094 |
btf: require pahole 1.21+ for DEBUG_INFO_BTF with default DWARF version
As described in commit
|
||
|
Masahiro Yamada
|
42450f7a90 |
btf: move pahole check in scripts/link-vmlinux.sh to lib/Kconfig.debug
When DEBUG_INFO_DWARF5 is selected, pahole 1.21+ is required to enable
DEBUG_INFO_BTF.
When DEBUG_INFO_DWARF4 or DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT is selected,
DEBUG_INFO_BTF can be enabled without pahole installed, but a build error
will occur in scripts/link-vmlinux.sh:
LD .tmp_vmlinux1
BTF: .tmp_vmlinux1: pahole (pahole) is not available
Failed to generate BTF for vmlinux
Try to disable CONFIG_DEBUG_INFO_BTF
We did not guard DEBUG_INFO_BTF by PAHOLE_VERSION when previously
discussed [1].
However, commit
|
||
|
Christophe Leroy
|
7f053812da |
random: vDSO: minimize and simplify header includes
Depending on the architecture, building a 32-bit vDSO on a 64-bit kernel
is problematic when some system headers are included.
Minimise the amount of headers by moving needed items, such as
__{get,put}_unaligned_t, into dedicated common headers and in general
use more specific headers, similar to what was done in commit
|
||
|
Christophe Leroy
|
b7bad082e1 |
random: vDSO: avoid call to out of line memset()
With the current implementation, __cvdso_getrandom_data() calls memset() on certain architectures, which is unexpected in the VDSO. Rather than providing a memset(), simply rewrite opaque data initialization to avoid memset(). Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Christophe Leroy
|
81723e3ac3 |
random: vDSO: add missing c-getrandom-y in Makefile
Same as for the gettimeofday CVDSO implementation, add c-getrandom-y to ease the inclusion of lib/vdso/getrandom.c in architectures' VDSO builds. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> |
||
|
Christophe Leroy
|
81c6896049 |
random: vDSO: don't use 64-bit atomics on 32-bit architectures
Performing SMP atomic operations on u64 fails on powerpc32:
CC drivers/char/random.o
In file included from <command-line>:
drivers/char/random.c: In function 'crng_reseed':
././include/linux/compiler_types.h:510:45: error: call to '__compiletime_assert_391' declared with attribute error: Need native word sized stores/loads for atomicity.
510 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
././include/linux/compiler_types.h:491:25: note: in definition of macro '__compiletime_assert'
491 | prefix ## suffix(); \
| ^~~~~~
././include/linux/compiler_types.h:510:9: note: in expansion of macro '_compiletime_assert'
510 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
././include/linux/compiler_types.h:513:9: note: in expansion of macro 'compiletime_assert'
513 | compiletime_assert(__native_word(t), \
| ^~~~~~~~~~~~~~~~~~
./arch/powerpc/include/asm/barrier.h:74:9: note: in expansion of macro 'compiletime_assert_atomic_type'
74 | compiletime_assert_atomic_type(*p); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./include/asm-generic/barrier.h:172:55: note: in expansion of macro '__smp_store_release'
172 | #define smp_store_release(p, v) do { kcsan_release(); __smp_store_release(p, v); } while (0)
| ^~~~~~~~~~~~~~~~~~~
drivers/char/random.c:286:9: note: in expansion of macro 'smp_store_release'
286 | smp_store_release(&__arch_get_k_vdso_rng_data()->generation, next_gen + 1);
| ^~~~~~~~~~~~~~~~~
The kernel-side generation counter in the random driver is handled as an
unsigned long, not as a u64, in base_crng and struct crng.
But on the vDSO side, it needs to be an u64, not just an unsigned long,
in order to support a 32-bit vDSO atop a 64-bit kernel.
On kernel side, however, it is an unsigned long, hence a 32-bit value on
32-bit architectures, so just cast it to unsigned long for the
smp_store_release(). A side effect is that on big endian architectures
the store will be performed in the upper 32 bits. It is not an issue on
its own because the vDSO site doesn't mind the value, as it only checks
differences. Just make sure that the vDSO side checks the full 64 bits.
For that, the local current_generation has to be u64 as well.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
|
||
|
Luis Felipe Hernandez
|
7fcc9b5321 |
lib/math: Add int_pow test suite
Adds test suite for integer based power function which performs integer exponentiation. The test suite is designed to verify that the implementation of int_pow correctly computes the power of a given base raised to a given exponent. The tests check various scenarios and edge cases to ensure the accuracy and reliability of the exponentiation function. Updated commit with test information at commit time: Shuah Khan Signed-off-by: Luis Felipe Hernandez <luis.hernandez093@gmail.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
David Howells
|
db0aa2e956
|
mm: Define struct folio_queue and ITER_FOLIOQ to handle a sequence of folios
Define a data structure, struct folio_queue, to represent a sequence of
folios and a kernel-internal I/O iterator type, ITER_FOLIOQ, to allow a
list of folio_queue structures to be used to provide a buffer to
iov_iter-taking functions, such as sendmsg and recvmsg.
The folio_queue structure looks like:
struct folio_queue {
struct folio_batch vec;
u8 orders[PAGEVEC_SIZE];
struct folio_queue *next;
struct folio_queue *prev;
unsigned long marks;
unsigned long marks2;
};
It does not use a list_head so that next and/or prev can be set to NULL at
the ends of the list, allowing iov_iter-handling routines to determine that
they *are* the ends without needing to store a head pointer in the iov_iter
struct.
A folio_batch struct is used to hold the folio pointers which allows the
batch to be passed to batch handling functions. Two mark bits are
available per slot. The intention is to use at least one of them to mark
folios that need putting, but that might not be ultimately necessary.
Accessor functions are used to access the slots to do the masking and an
additional accessor function is used to indicate the size of the array.
The order of each folio is also stored in the structure to avoid the need
for iov_iter_advance() and iov_iter_revert() to have to query each folio to
find its size.
With careful barriering, this can be used as an extending buffer with new
folios inserted and new folio_queue structs added without the need for a
lock. Further, provided we always keep at least one struct in the buffer,
we can also remove consumed folios and consumed structs from the head end
as we without the need for locks.
[Questions/thoughts]
(1) To manage this, I need a head pointer, a tail pointer, a tail slot
number (assuming insertion happens at the tail end and the next
pointers point from head to tail). Should I put these into a struct
of their own, say "folio_queue_head" or "rolling_buffer"?
I will end up with two of these in netfs_io_request eventually, one
keeping track of the pagecache I'm dealing with for buffered I/O and
the other to hold a bounce buffer when we need one.
(2) Should I make the slots {folio,off,len} or bio_vec?
(3) This is intended to replace ITER_XARRAY eventually. Using an xarray
in I/O iteration requires the taking of the RCU read lock, doing
copying under the RCU read lock, walking the xarray (which may change
under us), handling retries and dealing with special values.
The advantage of ITER_XARRAY is that when we're dealing with the
pagecache directly, we don't need any allocation - but if we're doing
encrypted comms, there's a good chance we'd be using a bounce buffer
anyway.
This will require afs, erofs, cifs, orangefs and fscache to be
converted to not use this. afs still uses it for dirs and symlinks;
some of erofs usages should be easy to change, but there's one which
won't be so easy; ceph's use via fscache can be fixed by porting ceph
to netfslib; cifs is using xarray as a bounce buffer - that can be
moved to use sheaves instead; and orangefs has a similar problem to
erofs - maybe orangefs could use netfslib?
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Matthew Wilcox <willy@infradead.org>
cc: Jeff Layton <jlayton@kernel.org>
cc: Steve French <sfrench@samba.org>
cc: Ilya Dryomov <idryomov@gmail.com>
cc: Gao Xiang <xiang@kernel.org>
cc: Mike Marshall <hubcap@omnibond.com>
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
cc: linux-afs@lists.infradead.org
cc: linux-cifs@vger.kernel.org
cc: ceph-devel@vger.kernel.org
cc: linux-erofs@lists.ozlabs.org
cc: devel@lists.orangefs.org
Link: https://lore.kernel.org/r/20240814203850.2240469-13-dhowells@redhat.com/ # v2
Signed-off-by: Christian Brauner <brauner@kernel.org>
|
||
|
Andrii Nakryiko
|
cdbb44f9a7 |
lib/buildid: don't limit .note.gnu.build-id to the first page in ELF
With freader we don't need to restrict ourselves to a single page, so let's allow ELF notes to be at any valid position with the file. We also merge parse_build_id() and parse_build_id_buf() as now the only difference between them is note offset overflow, which makes sense to check in all situations. Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20240829174232.3133883-8-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
||
|
Andrii Nakryiko
|
ad41251c29 |
lib/buildid: implement sleepable build_id_parse() API
Extend freader with a flag specifying whether it's OK to cause page fault to fetch file data that is not already physically present in memory. With this, it's now easy to wait for data if the caller is running in sleepable (faultable) context. We utilize read_cache_folio() to bring the desired folio into page cache, after which the rest of the logic works just the same at folio level. Suggested-by: Omar Sandoval <osandov@fb.com> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20240829174232.3133883-7-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
||
|
Andrii Nakryiko
|
45b8fc3096 |
lib/buildid: rename build_id_parse() into build_id_parse_nofault()
Make it clear that build_id_parse() assumes that it can take no page fault by renaming it and current few users to build_id_parse_nofault(). Also add build_id_parse() stub which for now falls back to non-sleepable implementation, but will be changed in subsequent patches to take advantage of sleepable context. PROCMAP_QUERY ioctl() on /proc/<pid>/maps file is using build_id_parse() and will automatically take advantage of more reliable sleepable context implementation. Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20240829174232.3133883-6-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
||
|
Andrii Nakryiko
|
4e9d360c4c |
lib/buildid: remove single-page limit for PHDR search
Now that freader allows to access multiple pages transparently, there is no need to limit program headers to the very first ELF file page. Remove this limitation, but still put some sane limit on amount of program headers that we are willing to iterate over (set arbitrarily to 256). Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20240829174232.3133883-5-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
||
|
Andrii Nakryiko
|
d4deb82423 |
lib/buildid: take into account e_phoff when fetching program headers
Current code assumption is that program (segment) headers are following ELF header immediately. This is a common case, but is not guaranteed. So take into account e_phoff field of the ELF header when accessing program headers. Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Reported-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20240829174232.3133883-4-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
||
|
Andrii Nakryiko
|
de3ec364c3 |
lib/buildid: add single folio-based file reader abstraction
Add freader abstraction that transparently manages fetching and local mapping of the underlying file page(s) and provides a simple direct data access interface. freader_fetch() is the only and single interface necessary. It accepts file offset and desired number of bytes that should be accessed, and will return a kernel mapped pointer that caller can use to dereference data up to requested size. Requested size can't be bigger than the size of the extra buffer provided during initialization (because, worst case, all requested data has to be copied into it, so it's better to flag wrongly sized buffer unconditionally, regardless if requested data range is crossing page boundaries or not). If folio is not paged in, or some of the conditions are not satisfied, NULL is returned and more detailed error code can be accessed through freader->err field. This approach makes the usage of freader_fetch() cleaner. To accommodate accessing file data that crosses folio boundaries, user has to provide an extra buffer that will be used to make a local copy, if necessary. This is done to maintain a simple linear pointer data access interface. We switch existing build ID parsing logic to it, without changing or lifting any of the existing constraints, yet. This will be done separately. Given existing code was written with the assumption that it's always working with a single (first) page of the underlying ELF file, logic passes direct pointers around, which doesn't really work well with freader approach and would be limiting when removing the single page (folio) limitation. So we adjust all the logic to work in terms of file offsets. There is also a memory buffer-based version (freader_init_from_mem()) for cases when desired data is already available in kernel memory. This is used for parsing vmlinux's own build ID note. In this mode assumption is that provided data starts at "file offset" zero, which works great when parsing ELF notes sections, as all the parsing logic is relative to note section's start. Reviewed-by: Eduard Zingerman <eddyz87@gmail.com> Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/r/20240829174232.3133883-3-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
||
|
Andrii Nakryiko
|
905415ff3f |
lib/buildid: harden build ID parsing logic
Harden build ID parsing logic, adding explicit READ_ONCE() where it's
important to have a consistent value read and validated just once.
Also, as pointed out by Andi Kleen, we need to make sure that entire ELF
note is within a page bounds, so move the overflow check up and add an
extra note_size boundaries validation.
Fixes tag below points to the code that moved this code into
lib/buildid.c, and then subsequently was used in perf subsystem, making
this code exposed to perf_event_open() users in v5.12+.
Cc: stable@vger.kernel.org
Reviewed-by: Eduard Zingerman <eddyz87@gmail.com>
Reviewed-by: Jann Horn <jannh@google.com>
Suggested-by: Andi Kleen <ak@linux.intel.com>
Fixes:
|
||
|
Thomas Gleixner
|
2f7eedca6c |
Merge branch 'linus' into timers/core
To update with the latest fixes. |
||
|
Alok Swaminathan
|
7b0a5b6669 |
lib: glob.c: added null check for character class
Add null check for character class. Previously, an inverted character class could result in a nul byte being matched and lead to the function reading past the end of the inputted string. Link: https://lkml.kernel.org/r/20240826155709.12383-1-swaminathanalok@gmail.com Signed-off-by: Alok Swaminathan <swaminathanalok@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Liam R. Howlett
|
1930c6ad93 |
maple_tree: mark three functions as __maybe_unused
People keep trying to remove three functions that are going to be used in a feature that is being developed. Dropping the functions entirely may end up with people trying to use the bit for other uses, as people have tried in the past. Adding __maybe_unused stops compilers complaining about the unused functions so they can be silently optimised out of the compiled code and people won't try to claim the bit for another use. Link: https://lore.kernel.org/all/20230726080916.17454-2-zhangpeng.00@bytedance.com/ Link: https://lore.kernel.org/all/202408310728.S7EE59BN-lkp@intel.com/ Link: https://lkml.kernel.org/r/20240907021506.4018676-1-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Kuan-Wei Chiu <visitorckw@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sergey Senozhatsky
|
f3c11cf5ca |
lib: zstd: fix null-deref in ZSTD_createCDict_advanced2()
ZSTD_createCDict_advanced2() must ensure that ZSTD_createCDict_advanced_internal() has successfully allocated cdict. customMalloc() may be called under low memory condition and may be unable to allocate workspace for cdict. Link: https://lkml.kernel.org/r/20240902105656.1383858-4-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Nick Terrell <terrelln@fb.com> Cc: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sergey Senozhatsky
|
7518847430 |
lib: lz4hc: export LZ4_resetStreamHC symbol
This symbol is needed to enable lz4hc dictionary support. Link: https://lkml.kernel.org/r/20240902105656.1383858-3-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Nick Terrell <terrelln@fb.com> Cc: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sergey Senozhatsky
|
4fc4187984 |
lib: zstd: export API needed for dictionary support
Patch series "zram: introduce custom comp backends API", v7. This series introduces support for run-time compression algorithms tuning, so users, for instance, can adjust compression/acceleration levels and provide pre-trained compression/decompression dictionaries which certain algorithms support. At this point we stop supporting (old/deprecated) comp API. We may add new acomp API support in the future, but before that zram needs to undergo some major rework (we are not ready for async compression). Some benchmarks for reference (look at column #2) *** init zstd /sys/block/zram0/mm_stat 1750659072 504622188 514355200 0 514355200 1 0 34204 34204 *** init zstd dict=/home/ss/zstd-dict-amd64 /sys/block/zram0/mm_stat 1750650880 465908890 475398144 0 475398144 1 0 34185 34185 *** init zstd level=8 dict=/home/ss/zstd-dict-amd64 /sys/block/zram0/mm_stat 1750654976 430803319 439873536 0 439873536 1 0 34185 34185 *** init lz4 /sys/block/zram0/mm_stat 1750646784 664266564 677060608 0 677060608 1 0 34288 34288 *** init lz4 dict=/home/ss/lz4-dict-amd64 /sys/block/zram0/mm_stat 1750650880 619990300 632102912 0 632102912 1 0 34278 34278 *** init lz4hc /sys/block/zram0/mm_stat 1750630400 609023822 621232128 0 621232128 1 0 34288 34288 *** init lz4hc dict=/home/ss/lz4-dict-amd64 /sys/block/zram0/mm_stat 1750659072 505133172 515231744 0 515231744 1 0 34278 34278 Recompress init zram zstd (prio=0), zstd level=5 (prio 1), zstd with dict (prio 2) *** zstd /sys/block/zram0/mm_stat 1750982656 504630584 514269184 0 514269184 1 0 34204 34204 *** idle recompress priority=1 (zstd level=5) /sys/block/zram0/mm_stat 1750982656 488645601 525438976 0 514269184 1 0 34204 34204 *** idle recompress priority=2 (zstd dict) /sys/block/zram0/mm_stat 1750982656 460869640 517914624 0 514269184 1 0 34185 34204 This patch (of 24): We need to export a number of API functions that enable advanced zstd usage - C/D dictionaries, dictionaries sharing between contexts, etc. Link: https://lkml.kernel.org/r/20240902105656.1383858-1-senozhatsky@chromium.org Link: https://lkml.kernel.org/r/20240902105656.1383858-2-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Nick Terrell <terrelln@fb.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
96ae4c9019 |
maple_tree: cleanup function descriptions
This patch tries to cleanup some function description: * function name mismatch * parameter name mismatch * parameter all end up with ':' * not prefix '*' if parameter is a pointer There is still some missing description of parameters, I didn't add them since I am not sure the exact meaning. Link: https://lkml.kernel.org/r/20240830220400.2007-1-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
21a449bedf |
maple_tree: dump error message based on format
Just do what mt_dump_range64() does. Dump the error message based on format. Link: https://lkml.kernel.org/r/20240826012422.29935-2-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
8152831069 |
maple_tree: arange64 node is not a leaf node
mt_dump_arange64() only applies to an entry whose type is maple_arange_64, in which mte_is_leaf() must return false. Since mte_is_leaf() here is always false, we can remove this condition check. Link: https://lkml.kernel.org/r/20240826012422.29935-1-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Zhen Lei
|
63a4a9b52c |
debugobjects: Remove redundant checks in fill_pool()
fill_pool() checks locklessly at the beginning whether the pool has to be
refilled. After that it checks locklessly in a loop whether the free list
contains objects and repeats the refill check.
If both conditions are true, it acquires the pool lock and tries to move
objects from the free list to the pool repeating the same checks again.
There are two redundant issues with that:
1) The repeated check for the fill condition
2) The loop processing
The repeated check is pointless as it was just established that fill is
required. The condition has to be re-evaluated under the lock anyway.
The loop processing is not required either because there is practically
zero chance that a repeated attempt will succeed if the checks under the
lock terminate the moving of objects.
Remove the redundant check and replace the loop with a simple if condition.
[ tglx: Massaged change log ]
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20240904133944.2124-4-thunder.leizhen@huawei.com
|
||
|
Zhen Lei
|
684d28feb8 |
debugobjects: Fix conditions in fill_pool()
fill_pool() uses 'obj_pool_min_free' to decide whether objects should be handed back to the kmem cache. But 'obj_pool_min_free' records the lowest historical value of the number of objects in the object pool and not the minimum number of objects which should be kept in the pool. Use 'debug_objects_pool_min_level' instead, which holds the minimum number which was scaled to the number of CPUs at boot time. [ tglx: Massage change log ] Fixes: |
||
|
Zhen Lei
|
e4757c710b |
debugobjects: Fix the compilation attributes of some global variables
1. Both debug_objects_pool_min_level and debug_objects_pool_size are read-only after initialization, change attribute '__read_mostly' to '__ro_after_init', and remove '__data_racy'. 2. Many global variables are read in the debug_stats_show() function, but didn't mask KCSAN's detection. Add '__data_racy' for them. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240904133944.2124-2-thunder.leizhen@huawei.com |
||
|
Kent Overstreet
|
b3f9da79e7 |
lib/generic-radix-tree.c: add preallocation
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
||
|
Kent Overstreet
|
f659463381 |
lib/generic-radix-tree.c: genradix_ptr_inlined()
Provide an inlined fast path Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
||
|
Anna-Maria Behnsen
|
bd7c8ff9fe |
treewide: Fix wrong singular form of jiffies in comments
There are several comments all over the place, which uses a wrong singular form of jiffies. Replace 'jiffie' by 'jiffy'. No functional change. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k Link: https://lore.kernel.org/all/20240904-devel-anna-maria-b4-timers-flseep-v1-3-e98760256370@linutronix.de |
||
|
Jakub Kicinski
|
502cc061de |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/phy/phy_device.c |
||
|
Linus Torvalds
|
120434e5b3 |
linux_kselftest-kunit-fixes-6.11-rc7
This kunit update for Linux 6.11-rc7 consist of one single fix to a use-after-free bug resulting from kunit_driver_create() failing to copy the driver name leaving it on the stack or freeing it. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmbY0WMACgkQCwJExA0N QxzCgBAA7Cb6tyvGcXsQTXC50S90CR+3bGmHzTL8jl/ElHvTz521UzPTn01QB51t JcGNhKz3RByvRBuukhg7abpCnCYWZoa9pmxojVD5D1TO2AXvypWEv0ao/UwSAYyi 2b7BTkcc7ciRske51/yFfipjwI/NLLIlu4HVcZ0OisOt+tvHzoz50KiyYV+Qan8r e8NkqVI587KLfDAZRC+cLXyJCIRwlCK+jNMrjoiOanv1Ybe65eAGNQmAIyuGX1Fo Ku8ZgoCgpc+Vjc1bMWgwgHWCdFOvINdd7ibfCp59JBBAkqYFpHYS5Lk9kHWH6lYF X9THLaCSh5cq+u0qksW8p4ml1fYnWZbm92qkdPj0wG36v9la769HSXijtVhL2lxD b1ca/NpfNfbbr5mxoVRq4ulO1JvyC6jmRKSJWt1p1SFfHf+Oaowh2Sr2ZjFfOozj +/Joh3n2dxlnH/in8BvXGwQIo7xbyTatm/4IVCccJAolR+hPv7izBeWfYn3xgtu5 5WZVcxPMxNwgNHWnxm2nbxTtBTvTsOSC8/nbxm8g3jM9cHCP7Mz3/zSV6p2vcRxm HPx/Qj2LmNcPKGXs4jh7WLErgkunxlvsqCJChwGjZoYR0fgRmzCgrwbkDE6/26UW Teo51bWwD/CxTy7OtXi8D2pPzVqt8u5cFPaNgHaRzxLDuVTouhU= =JRC5 -----END PGP SIGNATURE----- Merge tag 'linux_kselftest-kunit-fixes-6.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kunit fix fromShuah Khan: "One single fix to a use-after-free bug resulting from kunit_driver_create() failing to copy the driver name leaving it on the stack or freeing it" * tag 'linux_kselftest-kunit-fixes-6.11-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: Device wrappers should also manage driver name |
||
|
Tejun Heo
|
649e980dad |
Merge branch 'bpf/master' into for-6.12
Pull bpf/master to receive
|
||
|
Matthew Wilcox (Oracle)
|
e27ad6560e |
printf: remove %pGt support
Patch series "Increase the number of bits available in page_type". Kent wants more than 16 bits in page_type, so I resurrected this old patch and expanded it a bit. It's a bit more efficient than our current scheme (1 4-byte insn vs 3 insns of 13 bytes total) to test a single page type. This patch (of 4): An upcoming patch will convert page type from being a bitfield to a single byte, so we will not be able to use %pG to print the page type any more. The printing of the symbolic name will be restored in that patch. Link: https://lkml.kernel.org/r/20240821173914.2270383-1-willy@infradead.org Link: https://lkml.kernel.org/r/20240821173914.2270383-2-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: David Hildenbrand <david@redhat.com> Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Alexander Lobakin
|
00d066a4d4 |
netdev_features: convert NETIF_F_LLTX to dev->lltx
NETIF_F_LLTX can't be changed via Ethtool and is not a feature, rather an attribute, very similar to IFF_NO_QUEUE (and hot). Free one netdev_features_t bit and make it a "hot" private flag. Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
|
Yang Ruibin
|
38676d9e33 |
lib: fix the NULL vs IS_ERR() bug for debugfs_create_dir()
debugfs_create_dir() returns error pointers. It never returns NULL. So use IS_ERR() to check it. Link: https://lkml.kernel.org/r/20240821073441.9701-1-11162571@vivo.com Signed-off-by: Yang Ruibin <11162571@vivo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Andy Shevchenko
|
fb54ea1ee8 |
dimlib: use *-y instead of *-objs in Makefile
*-objs suffix is reserved rather for (user-space) host programs while usually *-y suffix is used for kernel drivers (although *-objs works for that purpose for now). Let's correct the old usages of *-objs in Makefiles. Link: https://lkml.kernel.org/r/20240821155140.611514-1-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Florian Fainelli <florian.fainelli@broadcom.com> Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Tal Gilboa <talgi@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Uros Bizjak
|
16d9691ad4 |
lib/percpu_counter: add missing __percpu qualifier to a cast
Add missing __percpu qualifier to a (void *) cast to fix percpu_counter.c:212:36: warning: cast removes address space '__percpu' of expression percpu_counter.c:212:33: warning: incorrect type in assignment (different address spaces) percpu_counter.c:212:33: expected signed int [noderef] [usertype] __percpu *counters percpu_counter.c:212:33: got void * sparse warnings. Found by GCC's named address space checks. There were no changes in the resulting object file. Link: https://lkml.kernel.org/r/20240814064437.940162-1-ubizjak@gmail.com Signed-off-by: Uros Bizjak <ubizjak@gmail.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Tejun Heo <tj@kernel.org> Cc: Christoph Lameter <cl@linux.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Kuan-Wei Chiu
|
cbf164cd44 |
lib/bcd: optimize _bin2bcd() for improved performance
The original _bin2bcd() function used / 10 and % 10 operations for conversion. Although GCC optimizes these operations and does not generate division or modulus instructions, the new implementation reduces the number of mov instructions in the generated code for both x86-64 and ARM architectures. This optimization calculates the tens digit using (val * 103) >> 10, which is accurate for values of 'val' in the range [0, 178]. Given that the valid input range is [0, 99], this method ensures correctness while simplifying the generated code. Link: https://lkml.kernel.org/r/20240812170229.229380-1-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Jani Nikula
|
6ce2082fd3 |
fault-inject: improve build for CONFIG_FAULT_INJECTION=n
The fault-inject.h users across the kernel need to add a lot of #ifdef
CONFIG_FAULT_INJECTION to cater for shortcomings in the header. Make
fault-inject.h self-contained for CONFIG_FAULT_INJECTION=n, and add stubs
for DECLARE_FAULT_ATTR(), setup_fault_attr(), should_fail_ex(), and
should_fail() to allow removal of conditional compilation.
[akpm@linux-foundation.org: repair fallout from no longer including debugfs.h into fault-inject.h]
[akpm@linux-foundation.org: fix drivers/misc/xilinx_tmr_inject.c]
[akpm@linux-foundation.org: Add debugfs.h inclusion to more files, per Stephen]
Link: https://lkml.kernel.org/r/20240813121237.2382534-1-jani.nikula@intel.com
Fixes:
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Davidlohr Bueso
|
a15bec6a8f |
lib/rhashtable: cleanup fallback check in bucket_table_alloc()
Upon allocation failure, the current check with the nofail bits is unnecessary, and further stands in the way of discouraging direct use of __GFP_NOFAIL. Remove this and replace with the proper way of determining if doing a non-blocking allocation for the nested table case. Link: https://lkml.kernel.org/r/20240806153927.184515-1-dave@stgolabs.net Signed-off-by: Davidlohr Bueso <dave@stgolabs.net> Suggested-by: Michal Hocko <mhocko@suse.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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J. R. Okajima
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e0ba72e3a4 |
lockdep: upper limit LOCKDEP_CHAINS_BITS
CONFIG_LOCKDEP_CHAINS_BITS value decides the size of chain_hlocks[] in
kernel/locking/lockdep.c, and it is checked by add_chain_cache() with
BUILD_BUG_ON((1UL << 24) <= ARRAY_SIZE(chain_hlocks));
This patch is just to silence BUILD_BUG_ON().
See also https://lore.kernel.org/all/30795.1620913191@jrobl/
[cmllamas@google.com: fix minor checkpatch issues in commit log]
Link: https://lkml.kernel.org/r/20240723164018.2489615-1-cmllamas@google.com
Signed-off-by: J. R. Okajima <hooanon05g@gmail.com>
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Thorsten Blum
|
b6e21b7120 |
lib: checksum: use ARRAY_SIZE() to improve assert_setup_correct()
Use ARRAY_SIZE() to simplify the assert_setup_correct() function and improve its readability. Link: https://lkml.kernel.org/r/20240726154946.230928-1-thorsten.blum@toblux.com Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Deshan Zhang
|
9a42bfd255 |
lib/lru_cache: fix spelling mistake "colision"->"collision"
There is a spelling mistake in a literal string and in cariable names. Fix these. Link: https://lkml.kernel.org/r/20240725093044.1742842-1-deshan@nfschina.com Signed-off-by: Deshan Zhang <deshan@nfschina.com> Cc: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> Cc: Lars Ellenberg <lars.ellenberg@linbit.com> Cc: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Markus Elfring
|
fbe617af69 |
closures: use seq_putc() in debug_show()
A single line break should be put into a sequence. Thus use the corresponding function "seq_putc". This issue was transformed by using the Coccinelle software. Link: https://lkml.kernel.org/r/e7faa2c4-9590-44b4-8669-69ef810277b1@web.de Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Cc: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Markus Elfring
|
7b76689a02 |
dyndbg: use seq_putc() in ddebug_proc_show()
Single characters should be put into a sequence. Thus use the corresponding function "seq_putc". This issue was transformed by using the Coccinelle software. Link: https://lkml.kernel.org/r/375b5b4b-6295-419e-bae9-da724a7a682d@web.de Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Cc: Jason Baron <jbaron@akamai.com> Cc: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lasse Collin
|
c6f371bab2 |
xz: remove XZ_EXTERN and extern from functions
XZ_EXTERN was used to make internal functions static in the preboot code. However, in other decompressors this hasn't been done. On x86-64, this makes no difference to the kernel image size. Omit XZ_EXTERN and let some of the internal functions be extern in the preboot code. Omitting XZ_EXTERN from include/linux/xz.h fixes warnings in "make htmldocs" and makes the intradocument links to xz_dec functions work in Documentation/staging/xz.rst. The alternative would have been to add "XZ_EXTERN" to c_id_attributes in Documentation/conf.py but omitting XZ_EXTERN seemed cleaner. Link: https://lore.kernel.org/lkml/20240723205437.3c0664b0@kaneli/ Link: https://lkml.kernel.org/r/20240724110544.16430-1-lasse.collin@tukaani.org Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Tested-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Cc: Jonathan Corbet <corbet@lwn.net> Cc: Sam James <sam@gentoo.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Emil Renner Berthing <emil.renner.berthing@canonical.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Joel Stanley <joel@jms.id.au> Cc: Jubin Zhong <zhongjubin@huawei.com> Cc: Jules Maselbas <jmaselbas@zdiv.net> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Rui Li <me@lirui.org> Cc: Simon Glass <sjg@chromium.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lasse Collin
|
7472ff8ada |
xz: adjust arch-specific options for better kernel compression
Use LZMA2 options that match the arch-specific alignment of instructions. This change reduces compressed kernel size 0-2 % depending on the arch. On 1-byte-aligned x86 it makes no difference and on 4-byte-aligned archs it helps the most. Use the ARM-Thumb filter for ARM-Thumb2 kernels. This reduces compressed kernel size about 5 %.[1] Previously such kernels were compressed using the ARM filter which didn't do anything useful with ARM-Thumb2 code. Add BCJ filter support for ARM64 and RISC-V. Compared to unfiltered XZ or plain LZMA, the compressed kernel size is reduced about 5 % on ARM64 and 7 % on RISC-V. A new enough version of the xz tool is required: 5.4.0 for ARM64 and 5.6.0 for RISC-V. With an old xz version, a message is printed to standard error and the kernel is compressed without the filter. Update lib/decompress_unxz.c to match the changes to xz_wrap.sh. Update the CONFIG_KERNEL_XZ help text in init/Kconfig: - Add the RISC-V and ARM64 filters. - Clarify that the PowerPC filter is for big endian only. - Omit IA-64. Link: https://lore.kernel.org/lkml/1637379771-39449-1-git-send-email-zhongjubin@huawei.com/ [1] Link: https://lkml.kernel.org/r/20240721133633.47721-15-lasse.collin@tukaani.org Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Reviewed-by: Sam James <sam@gentoo.org> Cc: Simon Glass <sjg@chromium.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Jubin Zhong <zhongjubin@huawei.com> Cc: Jules Maselbas <jmaselbas@zdiv.net> Cc: Emil Renner Berthing <emil.renner.berthing@canonical.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Joel Stanley <joel@jms.id.au> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Rui Li <me@lirui.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lasse Collin
|
93d09773d1 |
xz: add RISC-V BCJ filter
A later commit updates lib/decompress_unxz.c to enable this filter for kernel decompression. lib/decompress_unxz.c is already used if CONFIG_EFI_ZBOOT=y && CONFIG_KERNEL_XZ=y. This filter can be used by Squashfs without modifications to the Squashfs kernel code (only needs support in userspace Squashfs-tools). Link: https://lkml.kernel.org/r/20240721133633.47721-13-lasse.collin@tukaani.org Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Reviewed-by: Sam James <sam@gentoo.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Emil Renner Berthing <emil.renner.berthing@canonical.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Joel Stanley <joel@jms.id.au> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Jubin Zhong <zhongjubin@huawei.com> Cc: Jules Maselbas <jmaselbas@zdiv.net> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Rui Li <me@lirui.org> Cc: Simon Glass <sjg@chromium.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lasse Collin
|
4b62813f5e |
xz: Add ARM64 BCJ filter
Also omit a duplicated check for XZ_DEC_ARM in xz_private.h. A later commit updates lib/decompress_unxz.c to enable this filter for kernel decompression. lib/decompress_unxz.c is already used if CONFIG_EFI_ZBOOT=y && CONFIG_KERNEL_XZ=y. This filter can be used by Squashfs without modifications to the Squashfs kernel code (only needs support in userspace Squashfs-tools). Link: https://lkml.kernel.org/r/20240721133633.47721-12-lasse.collin@tukaani.org Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Reviewed-by: Sam James <sam@gentoo.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Emil Renner Berthing <emil.renner.berthing@canonical.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Joel Stanley <joel@jms.id.au> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Jubin Zhong <zhongjubin@huawei.com> Cc: Jules Maselbas <jmaselbas@zdiv.net> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Rui Li <me@lirui.org> Cc: Simon Glass <sjg@chromium.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lasse Collin
|
bdfc041171 |
xz: optimize for-loop conditions in the BCJ decoders
Compilers cannot optimize the addition "i + 4" away since theoretically it could overflow. Link: https://lkml.kernel.org/r/20240721133633.47721-11-lasse.collin@tukaani.org Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Reviewed-by: Sam James <sam@gentoo.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Emil Renner Berthing <emil.renner.berthing@canonical.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Joel Stanley <joel@jms.id.au> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Jubin Zhong <zhongjubin@huawei.com> Cc: Jules Maselbas <jmaselbas@zdiv.net> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Rui Li <me@lirui.org> Cc: Simon Glass <sjg@chromium.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lasse Collin
|
2ee96abef2 |
xz: cleanup CRC32 edits from 2018
In 2018, a dependency on <linux/crc32poly.h> was added to avoid duplicating the same constant in multiple files. Two months later it was found to be a bad idea and the definition of CRC32_POLY_LE macro was moved into xz_private.h to avoid including <linux/crc32poly.h>. xz_private.h is a wrong place for it too. Revert back to the upstream version which has the poly in xz_crc32_init() in xz_crc32.c. Link: https://lkml.kernel.org/r/20240721133633.47721-10-lasse.collin@tukaani.org Fixes: |
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Lasse Collin
|
ff221153aa |
xz: fix comments and coding style
- Fix comments that were no longer in sync with the code below them. - Fix language errors. - Fix coding style. Link: https://lkml.kernel.org/r/20240721133633.47721-5-lasse.collin@tukaani.org Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Reviewed-by: Sam James <sam@gentoo.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Emil Renner Berthing <emil.renner.berthing@canonical.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Joel Stanley <joel@jms.id.au> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Jubin Zhong <zhongjubin@huawei.com> Cc: Jules Maselbas <jmaselbas@zdiv.net> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Rui Li <me@lirui.org> Cc: Simon Glass <sjg@chromium.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lasse Collin
|
836d13a6ef |
xz: switch from public domain to BSD Zero Clause License (0BSD)
Remove the public domain notices and add SPDX license identifiers. Change MODULE_LICENSE from "GPL" to "Dual BSD/GPL" because 0BSD should count as a BSD license variant here. The switch to 0BSD was done in the upstream XZ Embedded project because public domain has (real or perceived) legal issues in some jurisdictions. Link: https://lkml.kernel.org/r/20240721133633.47721-4-lasse.collin@tukaani.org Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Reviewed-by: Sam James <sam@gentoo.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Emil Renner Berthing <emil.renner.berthing@canonical.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Joel Stanley <joel@jms.id.au> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Jubin Zhong <zhongjubin@huawei.com> Cc: Jules Maselbas <jmaselbas@zdiv.net> Cc: Krzysztof Kozlowski <krzk@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Rui Li <me@lirui.org> Cc: Simon Glass <sjg@chromium.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
|
e24f4de8a7 |
kcov: don't instrument lib/find_bit.c
This file produces large amounts of flaky coverage not useful for the KCOV's intended use case (guiding the fuzzing process). Link: https://lkml.kernel.org/r/20240722223726.194658-1-andrey.konovalov@linux.dev Signed-off-by: Andrey Konovalov <andreyknvl@gmail.com> Reviewed-by: Dmitry Vyukov <dvyukov@google.com> Cc: Aleksandr Nogikh <nogikh@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Marco Elver <elver@google.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Yury Norov <yury.norov@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Jeff Johnson
|
053a5e4cbb |
lib: test_objpool: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_objpool.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240715-md-lib-test_objpool-v2-1-5a2b9369c37e@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Reviewed-by: Matt Wu <wuqiang.matt@bytedance.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Nicolas Pitre
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1635e62e75 |
mul_u64_u64_div_u64: basic sanity test
Verify that edge cases produce proper results, and some more. [npitre@baylibre.com: avoid undefined shift value] Link: https://lkml.kernel.org/r/7rrs9pn1-n266-3013-9q6n-1osp8r8s0rrn@syhkavp.arg Link: https://lkml.kernel.org/r/20240707190648.1982714-3-nico@fluxnic.net Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Cc: Biju Das <biju.das.jz@bp.renesas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Nicolas Pitre
|
b29a62d87c |
mul_u64_u64_div_u64: make it precise always
Patch series "mul_u64_u64_div_u64: new implementation", v3. This provides an implementation for mul_u64_u64_div_u64() that always produces exact results. This patch (of 2): Library facilities must always return exact results. If the caller may be contented with approximations then it should do the approximation on its own. In this particular case the comment in the code says "the algorithm ... below might lose some precision". Well, if you try it with e.g.: a = 18446462598732840960 b = 18446462598732840960 c = 18446462598732840961 then the produced answer is 0 whereas the exact answer should be 18446462598732840959. This is _some_ precision lost indeed! Let's reimplement this function so it always produces the exact result regardless of its inputs while preserving existing fast paths when possible. Uwe said: : My personal interest is to get the calculations in pwm drivers right. : This function is used in several drivers below drivers/pwm/ . With the : errors in mul_u64_u64_div_u64(), pwm consumers might not get the : settings they request. Although I have to admit that I'm not aware it : breaks real use cases (because typically the periods used are too short : to make the involved multiplications overflow), but I pretty sure am : not aware of all usages and it breaks testing. : : Another justification is commits like : https://git.kernel.org/tip/77baa5bafcbe1b2a15ef9c37232c21279c95481c, : where people start to work around the precision shortcomings of : mul_u64_u64_div_u64(). Link: https://lkml.kernel.org/r/20240707190648.1982714-1-nico@fluxnic.net Link: https://lkml.kernel.org/r/20240707190648.1982714-2-nico@fluxnic.net Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Tested-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Tested-by: Biju Das <biju.das.jz@bp.renesas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Sidhartha Kumar
|
ed4dfd9aa1 |
maple_tree: make write helper functions void
The return value of various write helper functions are not checked. We can safely change the return type of these functions to be void. Link: https://lkml.kernel.org/r/20240814161944.55347-18-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sidhartha Kumar
|
c27e6183c6 |
maple_tree: remove unneeded mas_wr_walk() in mas_store_prealloc()
Users of mas_store_prealloc() enter this function with nodes already preallocated. This means the store type must be already set. We can then remove the call to mas_wr_store_type() and initialize the write state to continue the partial walk that was done when determining the store type. Link: https://lkml.kernel.org/r/20240814161944.55347-17-sidhartha.kumar@oracle.com Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Sidhartha Kumar
|
add60ea5f6 |
maple_tree: remove repeated sanity checks from write helper functions
These sanity checks are now redundant as they are already checked in mas_wr_store_type(). We can remove them from mas_wr_append() and mas_wr_node_store(). Link: https://lkml.kernel.org/r/20240814161944.55347-16-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Sidhartha Kumar
|
9155e84334 |
maple_tree: remove node allocations from various write helper functions
These write helper functions are all called from store paths which preallocate enough nodes that will be needed for the write. There is no more need to allocate within the functions themselves. Link: https://lkml.kernel.org/r/20240814161944.55347-15-sidhartha.kumar@oracle.com Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Sidhartha Kumar
|
4037d44f54 |
maple_tree: have mas_store() allocate nodes if needed
Not all users of mas_store() enter with nodes already preallocated. Check for the MA_STATE_PREALLOC flag to decide whether to preallocate nodes within mas_store() rather than relying on future write helper functions to perform the allocations. This allows the write helper functions to be simplified as they do not have to do checks to make sure there are enough allocated nodes to perform the write. Link: https://lkml.kernel.org/r/20240814161944.55347-14-sidhartha.kumar@oracle.com Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Sidhartha Kumar
|
7987d02779 |
maple_tree: remove mas_wr_modify()
There are no more users of the function, safely remove it. Link: https://lkml.kernel.org/r/20240814161944.55347-13-sidhartha.kumar@oracle.com Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Sidhartha Kumar
|
62c7b2b984 |
maple_tree: simplify mas_commit_b_node()
The only callers of mas_commit_b_node() are those with store type of wr_rebalance and wr_split_store. Use mas->store_type to dispatch to the correct helper function. This allows the removal of mas_reuse_node() as it is no longer used. Link: https://lkml.kernel.org/r/20240814161944.55347-12-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Sidhartha Kumar
|
1fd7c4f322 |
maple_tree: convert mas_insert() to preallocate nodes
By setting the store type in mas_insert(), we no longer need to use mas_wr_modify() to determine the correct store function to use. Instead, set the store type and call mas_wr_store_entry(). Also, pass in the requested gfp flags to mas_insert() so they can be passed to the call to mas_wr_preallocate(). Link: https://lkml.kernel.org/r/20240814161944.55347-11-sidhartha.kumar@oracle.com Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Sidhartha Kumar
|
580fcbd67c |
maple_tree: use store type in mas_wr_store_entry()
When storing an entry, we can read the store type that was set from a previous partial walk of the tree. Now that the type of store is known, select the correct write helper function to use to complete the store. Also noinline mas_wr_spanning_store() to limit stack frame usage in mas_wr_store_entry() as it allocates a maple_big_node on the stack. Link: https://lkml.kernel.org/r/20240814161944.55347-10-sidhartha.kumar@oracle.com Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Sidhartha Kumar
|
23e217a848 |
maple_tree: print store type in mas_dump()
Knowing the store type of the maple state could be helpful for debugging. Have mas_dump() print mas->store_type. Link: https://lkml.kernel.org/r/20240814161944.55347-9-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sidhartha Kumar
|
85db8f2417 |
maple_tree: use mas_store_gfp() in mtree_store_range()
Refactor mtree_store_range() to use mas_store_gfp() which will abstract the store, memory allocation, and error handling. Link: https://lkml.kernel.org/r/20240814161944.55347-8-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sidhartha Kumar
|
7e093834ed |
maple_tree: preallocate nodes in mas_erase()
Use mas_wr_preallocate() in mas_erase() to preallocate enough nodes to complete the erase. Add error handling by skipping the store if the preallocation lead to some error besides no memory. Link: https://lkml.kernel.org/r/20240814161944.55347-7-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sidhartha Kumar
|
3cd9e92e00 |
maple_tree: remove mas_destroy() from mas_nomem()
Separate call to mas_destroy() from mas_nomem() so we can check for no memory errors without destroying the current maple state in mas_store_gfp(). We then add calls to mas_destroy() to callers of mas_nomem(). Link: https://lkml.kernel.org/r/20240814161944.55347-6-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sidhartha Kumar
|
5d659bbb52 |
maple_tree: introduce mas_wr_store_type()
Introduce mas_wr_store_type() which will set the correct store type based on a walk of the tree. In mas_wr_node_store() the <= min_slots condition is changed to < as if new_end is = to mt_min_slots then there is not enough room. mas_prealloc_calc() is also introduced to abstract the calculation used to determine the number of nodes needed for a store operation. In this change a call to mas_reset() is removed in the error case of mas_prealloc(). This is only needed in the MA_STATE_REBALANCE case of mas_destroy(). We can move the call to mas_reset() directly to mas_destroy(). Also, add a test case to validate the order that we check the store type in is correct. This test models a vma expanding and then shrinking which is part of the boot process. Link: https://lkml.kernel.org/r/20240814161944.55347-5-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Sidhartha Kumar
|
3cc6f42a53 |
maple_tree: move up mas_wr_store_setup() and mas_wr_prealloc_setup()
Subsequent patches require these definitions to be higher, no functional changes intended. Link: https://lkml.kernel.org/r/20240814161944.55347-4-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sidhartha Kumar
|
19138a2cc1 |
maple_tree: introduce mas_wr_prealloc_setup()
Introduce a helper function, mas_wr_prealoc_setup(), that will set up a maple write state in order to start a walk of a maple tree. Link: https://lkml.kernel.org/r/20240814161944.55347-3-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
c64d66153b |
maple_tree: fix comment typo with corresponding maple_status
In comment of function mas_start(), we list the return value of different cases. According to the comment context, tell the maple_status here is more consistent with others. Let's correct it with ma_active in the case it's a tree. Link: https://lkml.kernel.org/r/20240812150925.31551-2-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
7a0529d0c2 |
maple_tree: fix comment typo of ma_root
In comment of mas_start(), we lists the return value for different cases. In case of a single entry, we set mas->status to ma_root, while the comment uses mas_root, which is not a maple_status. Fix the typo according to the code. Link: https://lkml.kernel.org/r/20240812150925.31551-1-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sidhartha Kumar
|
617f8e4d76 |
maple_tree: add test to replicate low memory race conditions
Add new callback fields to the userspace implementation of struct kmem_cache. This allows for executing callback functions in order to further test low memory scenarios where node allocation is retried. This callback can help test race conditions by calling a function when a low memory event is tested. Link: https://lkml.kernel.org/r/20240812190543.71967-2-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Sidhartha Kumar
|
e1b8b883bb |
maple_tree: reset mas->index and mas->last on write retries
The following scenario can result in a race condition:
Consider a node with the following indices and values
a<------->b<----------->c<--------->d
0xA NULL 0xB
CPU 1 CPU 2
--------- ---------
mas_set_range(a,b)
mas_erase()
-> range is expanded (a,c) because of null expansion
mas_nomem()
mas_unlock()
mas_store_range(b,c,0xC)
The node now looks like:
a<------->b<----------->c<--------->d
0xA 0xC 0xB
mas_lock()
mas_erase() <------ range of erase is still (a,c)
The node is now NULL from (a,c) but the write from CPU 2 should have been
retained and range (b,c) should still have 0xC as its value. We can fix
this by re-intializing to the original index and last. This does not need
a cc: Stable as there are no users of the maple tree which use internal
locking and this condition is only possible with internal locking.
Link: https://lkml.kernel.org/r/20240812190543.71967-1-sidhartha.kumar@oracle.com
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Thorsten Blum
|
592c9330e3 |
lib: test_hmm: use min() to improve dmirror_exclusive()
Use min() to simplify the dmirror_exclusive() function and improve its readability. Link: https://lkml.kernel.org/r/20240726131245.161695-1-thorsten.blum@toblux.com Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Jérôme Glisse <jglisse@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Danilo Krummrich
|
590b9d576c |
mm: kvmalloc: align kvrealloc() with krealloc()
Besides the obvious (and desired) difference between krealloc() and kvrealloc(), there is some inconsistency in their function signatures and behavior: - krealloc() frees the memory when the requested size is zero, whereas kvrealloc() simply returns a pointer to the existing allocation. - krealloc() behaves like kmalloc() if a NULL pointer is passed, whereas kvrealloc() does not accept a NULL pointer at all and, if passed, would fault instead. - krealloc() is self-contained, whereas kvrealloc() relies on the caller to provide the size of the previous allocation. Inconsistent behavior throughout allocation APIs is error prone, hence make kvrealloc() behave like krealloc(), which seems superior in all mentioned aspects. Besides that, implementing kvrealloc() by making use of krealloc() and vrealloc() provides oppertunities to grow (and shrink) allocations more efficiently. For instance, vrealloc() can be optimized to allocate and map additional pages to grow the allocation or unmap and free unused pages to shrink the allocation. [dakr@kernel.org: document concurrency restrictions] Link: https://lkml.kernel.org/r/20240725125442.4957-1-dakr@kernel.org [dakr@kernel.org: disable KASAN when switching to vmalloc] Link: https://lkml.kernel.org/r/20240730185049.6244-2-dakr@kernel.org [dakr@kernel.org: properly document __GFP_ZERO behavior] Link: https://lkml.kernel.org/r/20240730185049.6244-5-dakr@kernel.org Link: https://lkml.kernel.org/r/20240722163111.4766-3-dakr@kernel.org Signed-off-by: Danilo Krummrich <dakr@kernel.org> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Chandan Babu R <chandan.babu@oracle.com> Cc: Christian König <christian.koenig@amd.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kees Cook <kees@kernel.org> Cc: Marc Zyngier <maz@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Oliver Upton <oliver.upton@linux.dev> Cc: Pekka Enberg <penberg@kernel.org> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Uladzislau Rezki <urezki@gmail.com> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Suren Baghdasaryan
|
052a45c1cb |
alloc_tag: fix allocation tag reporting when CONFIG_MODULES=n
codetag_module_init() is used to initialize sections containing allocation
tags. This function is used to initialize module sections as well as core
kernel sections, in which case the module parameter is set to NULL. This
function has to be called even when CONFIG_MODULES=n to initialize core
kernel allocation tag sections. When CONFIG_MODULES=n, this function is a
NOP, which is wrong. This leads to /proc/allocinfo reported as empty.
Fix this by making it independent of CONFIG_MODULES.
Link: https://lkml.kernel.org/r/20240828231536.1770519-1-surenb@google.com
Fixes:
|
||
|
Liam R. Howlett
|
f806de88d8 |
maple_tree: remove rcu_read_lock() from mt_validate()
The write lock should be held when validating the tree to avoid updates
racing with checks. Holding the rcu read lock during a large tree
validation may also cause a prolonged rcu read window and "rcu_preempt
detected stalls" warnings.
Link: https://lore.kernel.org/all/0000000000001d12d4062005aea1@google.com/
Link: https://lkml.kernel.org/r/20240820175417.2782532-1-Liam.Howlett@oracle.com
Fixes:
|
||
|
Linus Torvalds
|
d5d547aa7b |
Random number generator fixes for Linux 6.11-rc6.
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEq5lC5tSkz8NBJiCnSfxwEqXeA64FAmbPwucACgkQSfxwEqXe A653nRAA0pk0iDH9iz/DLXVy5e4WWE1WQyCdT4jB5H2SItG3fz4kcKz0x1qcPEtA RUhO4bZLTeFE/QkAQROA41x0ysAbg2dnIefO6CzFhndKGDyOEfUKYAsb65HiYj8Z HI9XGRYWc8kD35BGDtqGrgbgDgSVS3JPASC8mPJKv608h9f1M1ABqtyuft8bxz57 2OxuXoxVVN4ZI0VyQqqhT1roEiCIuuDaSZlPUws2PjnLxcqIQXXXPMLgN2vi9QzG cCslhtJMxBAhQ/skAVbxQlI6S2OB0zGROE78k2PK7eqGZuBAex9G0kuWH9Rl3RQL NmYjITWPZts7LRxCcvUQzxcKYsGb08mvCMCu+AAS9QfI1rOQu/TS7+4IfRHnHyg0 J7OBN0aPqKfciAch5NCfxN5EMUAlwXdro2/salONdGNF7do9mdjt/LqUzhbSKBPi kpVWBkLHzl0obPR1F/BBfC2oRW7Us5ShjaLod9J1DcJps/GTr7MXir8lEnPxwypJ 5t4F8Y4M34MpxmVZ/k2oNsEGhugpicaTAqa5KO4vqtWDPk1TNHi2POxU1Fjnth5K ds/NxoRvXV/2K5V+XiJQnngt5pgRjqU5DgCh19Bq1W7PqqbGkVWmzIa+zfYm9sCH +RuZiyjM16RyN/tDAxhfKowBqsagW6/DM7LJe3fWJO7yCem/S5g= =a3c1 -----END PGP SIGNATURE----- Merge tag 'random-6.11-rc6-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random Pull random number generator fix from Jason Donenfeld: "Reject invalid flags passed to vgetrandom() in the same way that getrandom() does, so that the behavior is the same, from Yann. The flags argument to getrandom() only has a behavioral effect on the function if the RNG isn't initialized yet, so vgetrandom() falls back to the syscall in that case. But if the RNG is initialized, all of the flags behave the same way, so vgetrandom() didn't bother checking them, and just ignored them entirely. But that doesn't account for invalid flags passed in, which need to be rejected so we can use them later" * tag 'random-6.11-rc6-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random: random: vDSO: reject unknown getrandom() flags |
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|
Anshuman Khandual
|
d7bcc37436 |
lib/test_bits.c: Add tests for GENMASK_U128()
This adds GENMASK_U128() tests although currently only 64 bit wide masks are being tested. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: linux-kernel@vger.kernel.org Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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|
Vlastimil Babka
|
4e1c44b3db |
kunit, slub: add test_kfree_rcu() and test_leak_destroy()
Add a test that will create cache, allocate one object, kfree_rcu() it and attempt to destroy it. As long as the usage of kvfree_rcu_barrier() in kmem_cache_destroy() works correctly, there should be no warnings in dmesg and the test should pass. Additionally add a test_leak_destroy() test that leaks an object on purpose and verifies that kmem_cache_destroy() catches it. Signed-off-by: Vlastimil Babka <vbabka@suse.cz> |
||
|
David Gow
|
f2c6dbd220 |
kunit: Device wrappers should also manage driver name
kunit_driver_create() accepts a name for the driver, but does not copy
it, so if that name is either on the stack, or otherwise freed, we end
up with a use-after-free when the driver is cleaned up.
Instead, strdup() the name, and manage it as another KUnit allocation.
As there was no existing kunit_kstrdup(), we add one. Further, add a
kunit_ variant of strdup_const() and kfree_const(), so we don't need to
allocate and manage the string in the majority of cases where it's a
constant.
However, these are inline functions, and is_kernel_rodata() only works
for built-in code. This causes problems in two cases:
- If kunit is built as a module, __{start,end}_rodata is not defined.
- If a kunit test using these functions is built as a module, it will
suffer the same fate.
This fixes a KASAN splat with overflow.overflow_allocation_test, when
built as a module.
Restrict the is_kernel_rodata() case to when KUnit is built as a module,
which fixes the first case, at the cost of losing the optimisation.
Also, make kunit_{kstrdup,kfree}_const non-inline, so that other modules
using them will not accidentally depend on is_kernel_rodata(). If KUnit
is built-in, they'll benefit from the optimisation, if KUnit is not,
they won't, but the string will be properly duplicated.
Fixes:
|
||
|
Yann Droneaud
|
28f5df210d |
random: vDSO: reject unknown getrandom() flags
Like the getrandom() syscall, vDSO getrandom() must also reject unknown
flags. [1]
It would be possible to return -EINVAL from vDSO itself, but in the
possible case that a new flag is added to getrandom() syscall in the
future, it would be easier to get the behavior from the syscall, instead
of erroring until the vDSO is extended to support the new flag or
explicitly falling back.
[1] Designing the API: Planning for Extension
https://docs.kernel.org/process/adding-syscalls.html#designing-the-api-planning-for-extension
Signed-off-by: Yann Droneaud <yann@droneaud.fr>
[Jason: reworded commit message]
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
|
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|
Caleb Sander Mateos
|
e68ac2b488 |
softirq: Remove unused 'action' parameter from action callback
When soft interrupt actions are called, they are passed a pointer to the struct softirq action which contains the action's function pointer. This pointer isn't useful, as the action callback already knows what function it is. And since each callback handles a specific soft interrupt, the callback also knows which soft interrupt number is running. No soft interrupt action callback actually uses this parameter, so remove it from the function pointer signature. This clarifies that soft interrupt actions are global routines and makes it slightly cheaper to call them. Signed-off-by: Caleb Sander Mateos <csander@purestorage.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/all/20240815171549.3260003-1-csander@purestorage.com |
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|
Linus Torvalds
|
2865baf540 |
x86: support user address masking instead of non-speculative conditional
The Spectre-v1 mitigations made "access_ok()" much more expensive, since
it has to serialize execution with the test for a valid user address.
All the normal user copy routines avoid this by just masking the user
address with a data-dependent mask instead, but the fast
"unsafe_user_read()" kind of patterms that were supposed to be a fast
case got slowed down.
This introduces a notion of using
src = masked_user_access_begin(src);
to do the user address sanity using a data-dependent mask instead of the
more traditional conditional
if (user_read_access_begin(src, len)) {
model.
This model only works for dense accesses that start at 'src' and on
architectures that have a guard region that is guaranteed to fault in
between the user space and the kernel space area.
With this, the user access doesn't need to be manually checked, because
a bad address is guaranteed to fault (by some architecture masking
trick: on x86-64 this involves just turning an invalid user address into
all ones, since we don't map the top of address space).
This only converts a couple of examples for now. Example x86-64 code
generation for loading two words from user space:
stac
mov %rax,%rcx
sar $0x3f,%rcx
or %rax,%rcx
mov (%rcx),%r13
mov 0x8(%rcx),%r14
clac
where all the error handling and -EFAULT is now purely handled out of
line by the exception path.
Of course, if the micro-architecture does badly at 'clac' and 'stac',
the above is still pitifully slow. But at least we did as well as we
could.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds
|
b718175853 |
bcachefs fixes for 6.11-rc4
- New on disk format version, bcachefs_metadata_version_disk_accounting_inum This adds one more disk accounting counter, which counts disk usage and number of extents per inode number. This lets us track fragmentation, for implementing defragmentation later, and it also counts disk usage per inode in all snapshots, which will be a useful thing to expose to users. - One performance issue we've observed is threads spinning when they should be waiting for dirty keys in the key cache to be flushed by journal reclaim, so we now have hysteresis for the waiting thread, as well as improving the tracepoint and a new time_stat, for tracking time blocked waiting on key cache flushing. And, various assorted smaller fixes. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKnAFLkS8Qha+jvQrE6szbY3KbnYFAma/9QkACgkQE6szbY3K bnYcBw/+LBSZ415gWSjPktdecf5rc6K4KxETxAxV0f0KesYzxqAtQzN0SCDvKt65 3aALU03wM8vWITiLS38/ckT+j6S2BpXcOxdu/OC0nRYQEUg9ZLvqEG5lQ3a/LliV Q64N33qsSr6QaKszFllLYcN4tGduKg8HoMlHn6+vJ7HNPjdfv0HHERSUsc7K84/w jkRtDE2NxsRJZKMEvIFp8hd5KXUR5zyBz/kc4P0WliLXpSyJLITzhKw1JV7ikKVD 0mO2bJ/0i7wPIabAD2HJahvbC7fl+2fkYFxUJ2XnvMTgU/+QyeGHEufbcbVrVSp0 BpzBTmSMFbGXBkbQBruFX5rJetzXeBqdYf0Yfavd4KDhGvYlSfDZQUapXT1QKC2q aHSB/s+2r7Crr/MBJyjbeFgXFTNGvI5yerlbdp2yj1kxjYJHHaKrp6h7n6XXk21W /mGF5tkIMkFTv98rQnIaky4neJzOPsLTTgxeR8zEudCgMaVUqEcaMdIFvARDjY/3 n52VR0zl3olV3vu7LgHaHfgH6lfaMV0sHPaGNYGL0YL+bCJD+lYM8a6l9aaks8vk md7+mFcOS4FUdDdS8MEKIN/k/gkEOC/EpmI864i9rIl0SiNXNy7FPTDKON8b+Ury 5omBMUQMEe9Q/pgKGXfpJWFynhSPEVf4y1DIOsrXk/jeBqenFyo= =BPGT -----END PGP SIGNATURE----- Merge tag 'bcachefs-2024-08-16' of git://evilpiepirate.org/bcachefs Pull bcachefs fixes from Kent OverstreetL - New on disk format version, bcachefs_metadata_version_disk_accounting_inum This adds one more disk accounting counter, which counts disk usage and number of extents per inode number. This lets us track fragmentation, for implementing defragmentation later, and it also counts disk usage per inode in all snapshots, which will be a useful thing to expose to users. - One performance issue we've observed is threads spinning when they should be waiting for dirty keys in the key cache to be flushed by journal reclaim, so we now have hysteresis for the waiting thread, as well as improving the tracepoint and a new time_stat, for tracking time blocked waiting on key cache flushing. ... and various assorted smaller fixes. * tag 'bcachefs-2024-08-16' of git://evilpiepirate.org/bcachefs: bcachefs: Fix locking in __bch2_trans_mark_dev_sb() bcachefs: fix incorrect i_state usage bcachefs: avoid overflowing LRU_TIME_BITS for cached data lru bcachefs: Fix forgetting to pass trans to fsck_err() bcachefs: Increase size of cuckoo hash table on too many rehashes bcachefs: bcachefs_metadata_version_disk_accounting_inum bcachefs: Kill __bch2_accounting_mem_mod() bcachefs: Make bkey_fsck_err() a wrapper around fsck_err() bcachefs: Fix warning in __bch2_fsck_err() for trans not passed in bcachefs: Add a time_stat for blocked on key cache flush bcachefs: Improve trans_blocked_journal_reclaim tracepoint bcachefs: Add hysteresis to waiting on btree key cache flush lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc() bcachefs: Convert for_each_btree_node() to lockrestart_do() bcachefs: Add missing downgrade table entry bcachefs: disk accounting: ignore unknown types bcachefs: bch2_accounting_invalid() fixup bcachefs: Fix bch2_trigger_alloc when upgrading from old versions bcachefs: delete faulty fastpath in bch2_btree_path_traverse_cached() |
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Herbert Xu
|
8e3a67f2de |
crypto: lib/mpi - Add error checks to extension
The remaining functions added by commit |
||
|
Herbert Xu
|
fca5cb4dd2 |
Revert "lib/mpi: Extend the MPI library"
This partially reverts commit
|
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Justin Stitt
|
bbf3c7ff9d |
lib/string_helpers: rework overflow-dependent code
When @size is 0, the desired behavior is to allow unlimited bytes to be parsed. Currently, this relies on some intentional arithmetic overflow where --size gives us SIZE_MAX when size is 0. Explicitly spell out the desired behavior without relying on intentional overflow/underflow. Signed-off-by: Justin Stitt <justinstitt@google.com> Link: https://lore.kernel.org/r/20240808-b4-string_helpers_caa133-v1-1-686a455167c4@google.com Signed-off-by: Kees Cook <kees@kernel.org> |
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|
Masahiro Yamada
|
9c6b7fbbd7 |
fortify: use if_changed_dep to record header dependency in *.cmd files
After building with CONFIG_FORTIFY_SOURCE=y, many .*.d files are left
in lib/test_fortify/ because the compiler outputs header dependencies
into *.d without fixdep being invoked.
When compiling C files, if_changed_dep should be used so that the
auto-generated header dependencies are recorded in .*.cmd files.
Currently, if_changed is incorrectly used, and only two headers are
hard-coded in lib/Makefile.
In the previous patch version, the kbuild test robot detected new errors
on GCC 7.
GCC 7 or older does not produce test.d with the following test code:
$ echo 'void b(void) __attribute__((__error__(""))); void a(void) { b(); }' |
gcc -Wp,-MMD,test.d -c -o /dev/null -x c -
Perhaps, this was a bug that existed in older GCC versions.
Skip the tests for GCC<=7 for now, as this will be eventually solved
when we bump the minimal supported GCC version.
Link: https://lore.kernel.org/oe-kbuild-all/CAK7LNARmJcyyzL-jVJfBPi3W684LTDmuhMf1koF0TXoCpKTmcw@mail.gmail.com/T/#m13771bf78ae21adff22efc4d310c973fb4bcaf67
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20240727150302.1823750-4-masahiroy@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
|
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|
Masahiro Yamada
|
5a8d0c46c9 |
fortify: move test_fortify.sh to lib/test_fortify/
This script is only used in lib/test_fortify/. There is no reason to keep it in scripts/. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Link: https://lore.kernel.org/r/20240727150302.1823750-3-masahiroy@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
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|
Masahiro Yamada
|
4e9903b086 |
fortify: refactor test_fortify Makefile to fix some build problems
There are some issues in the test_fortify Makefile code.
Problem 1: cc-disable-warning invokes compiler dozens of times
To see how many times the cc-disable-warning is evaluated, change
this code:
$(call cc-disable-warning,fortify-source)
to:
$(call cc-disable-warning,$(shell touch /tmp/fortify-$$$$)fortify-source)
Then, build the kernel with CONFIG_FORTIFY_SOURCE=y. You will see a
large number of '/tmp/fortify-<PID>' files created:
$ ls -1 /tmp/fortify-* | wc
80 80 1600
This means the compiler was invoked 80 times just for checking the
-Wno-fortify-source flag support.
$(call cc-disable-warning,fortify-source) should be added to a simple
variable instead of a recursive variable.
Problem 2: do not recompile string.o when the test code is updated
The test cases are independent of the kernel. However, when the test
code is updated, $(obj)/string.o is rebuilt and vmlinux is relinked
due to this dependency:
$(obj)/string.o: $(obj)/$(TEST_FORTIFY_LOG)
always-y is suitable for building the log files.
Problem 3: redundant code
clean-files += $(addsuffix .o, $(TEST_FORTIFY_LOGS))
... is unneeded because the top Makefile globally cleans *.o files.
This commit fixes these issues and makes the code readable.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Link: https://lore.kernel.org/r/20240727150302.1823750-2-masahiroy@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
|
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Ivan Orlov
|
92e9bac181 |
kunit/overflow: Fix UB in overflow_allocation_test
The 'device_name' array doesn't exist out of the 'overflow_allocation_test' function scope. However, it is being used as a driver name when calling 'kunit_driver_create' from 'kunit_device_register'. It produces the kernel panic with KASAN enabled. Since this variable is used in one place only, remove it and pass the device name into kunit_device_register directly as an ascii string. Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com> Reviewed-by: David Gow <davidgow@google.com> Link: https://lore.kernel.org/r/20240815000431.401869-1-ivan.orlov0322@gmail.com Signed-off-by: Kees Cook <kees@kernel.org> |
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Paul E. McKenney
|
ac9d45544c |
locking/csd_lock: Provide an indication of ongoing CSD-lock stall
If a CSD-lock stall goes on long enough, it will cause an RCU CPU stall warning. This additional warning provides much additional console-log traffic and little additional information. Therefore, provide a new csd_lock_is_stuck() function that returns true if there is an ongoing CSD-lock stall. This function will be used by the RCU CPU stall warnings to provide a one-line indication of the stall when this function returns true. [ neeraj.upadhyay: Apply Rik van Riel feedback. ] [ neeraj.upadhyay: Apply kernel test robot feedback. ] Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Cc: Imran Khan <imran.f.khan@oracle.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Leonardo Bras <leobras@redhat.com> Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org> Cc: Rik van Riel <riel@surriel.com> Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org> |
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Kent Overstreet
|
b2f11c6f3e |
lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()
If we need to increase the tree depth, allocate a new node, and then race with another thread that increased the tree depth before us, we'll still have a preallocated node that might be used later. If we then use that node for a new non-root node, it'll still have a pointer to the old root instead of being zeroed - fix this by zeroing it in the cmpxchg failure path. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
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Herbert Xu
|
da4fe6815a |
Revert "lib/mpi: Introduce ec implementation to MPI library"
This reverts commit
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Dmitry Vyukov
|
6cd0dd934b |
kcov: Add interrupt handling self test
Add a boot self test that can catch sprious coverage from interrupts. The coverage callback filters out interrupt code, but only after the handler updates preempt count. Some code periodically leaks out of that section and leads to spurious coverage. Add a best-effort (but simple) test that is likely to catch such bugs. If the test is enabled on CI systems that use KCOV, they should catch any issues fast. Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexander Potapenko <glider@google.com> Reviewed-by: Marco Elver <elver@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Link: https://lore.kernel.org/all/7662127c97e29da1a748ad1c1539dd7b65b737b2.1718092070.git.dvyukov@google.com |
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Gatlin Newhouse
|
7424fc6b86 |
x86/traps: Enable UBSAN traps on x86
Currently ARM64 extracts which specific sanitizer has caused a trap via
encoded data in the trap instruction. Clang on x86 currently encodes the
same data in the UD1 instruction but x86 handle_bug() and
is_valid_bugaddr() currently only look at UD2.
Bring x86 to parity with ARM64, similar to commit
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Xavier
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93c8332c83 |
Union-Find: add a new module in kernel library
This patch implements a union-find data structure in the kernel library, which includes operations for allocating nodes, freeing nodes, finding the root of a node, and merging two nodes. Signed-off-by: Xavier <xavier_qy@163.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
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c8faf11cd1 |
Linux 6.11-rc1
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmamtfseHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGC20H/j6G3+7gYGDtSsl9 5eH7UFzk18JeIG4c9Z5q9p2YVqdTggHOyWUA0qYBJWLyjpQa0q5SO+Qf2VwH8bH7 NpHZQYIdRB6dy/MySZII/6KdOJobz779P8EOPVdPs6PaAmiwOwzdK4aHxhi3iQJv 8QHmswjnT6t44p7WX1gZCUL2R3TL5hyA505BfPBz5OPBLkuuTArCBO8mZfTvk3R6 fskKrVBC3oEb9Vgx/bycah9wTJn4ptPUGggaTnbu44RkhZcHfMiciqOrtMtYtqKx fmGQllbVQ8CHp4IBZ5nYfUB4E04Zg+XqNeYHa0T9R97e7crZ5iMKutujydmnhqA0 r3Ca53w= =R3sl -----END PGP SIGNATURE----- Merge tag 'v6.11-rc1' into for-6.12 Linux 6.11-rc1 |
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Stephen Boyd
|
5ac7973032 |
platform: Add test managed platform_device/driver APIs
Introduce KUnit resource wrappers around platform_driver_register(), platform_device_alloc(), and platform_device_add() so that test authors can register platform drivers/devices from their tests and have the drivers/devices automatically be unregistered when the test is done. This makes test setup code simpler when a platform driver or platform device is needed. Add a few test cases at the same time to make sure the APIs work as intended. Cc: Brendan Higgins <brendan.higgins@linux.dev> Reviewed-by: David Gow <davidgow@google.com> Cc: Rae Moar <rmoar@google.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20240718210513.3801024-6-sboyd@kernel.org |
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Linus Torvalds
|
cb04e8b1d2 |
minmax: don't use max() in situations that want a C constant expression
We only had a couple of array[] declarations, and changing them to just use 'MAX()' instead of 'max()' fixes the issue. This will allow us to simplify our min/max macros enormously, since they can now unconditionally use temporary variables to avoid using the argument values multiple times. Cc: David Laight <David.Laight@aculab.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
|
1a251f52cf |
minmax: make generic MIN() and MAX() macros available everywhere
This just standardizes the use of MIN() and MAX() macros, with the very traditional semantics. The goal is to use these for C constant expressions and for top-level / static initializers, and so be able to simplify the min()/max() macros. These macro names were used by various kernel code - they are very traditional, after all - and all such users have been fixed up, with a few different approaches: - trivial duplicated macro definitions have been removed Note that 'trivial' here means that it's obviously kernel code that already included all the major kernel headers, and thus gets the new generic MIN/MAX macros automatically. - non-trivial duplicated macro definitions are guarded with #ifndef This is the "yes, they define their own versions, but no, the include situation is not entirely obvious, and maybe they don't get the generic version automatically" case. - strange use case #1 A couple of drivers decided that the way they want to describe their versioning is with #define MAJ 1 #define MIN 2 #define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) which adds zero value and I just did my Alexander the Great impersonation, and rewrote that pointless Gordian knot as #define DRV_VERSION "1.2" instead. - strange use case #2 A couple of drivers thought that it's a good idea to have a random 'MIN' or 'MAX' define for a value or index into a table, rather than the traditional macro that takes arguments. These values were re-written as C enum's instead. The new function-line macros only expand when followed by an open parenthesis, and thus don't clash with enum use. Happily, there weren't really all that many of these cases, and a lot of users already had the pattern of using '#ifndef' guarding (or in one case just using '#undef MIN') before defining their own private version that does the same thing. I left such cases alone. Cc: David Laight <David.Laight@aculab.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
|
910bfc26d1 |
Rust changes for v6.11
The highlight is the establishment of a minimum version for the Rust toolchain, including 'rustc' (and bundled tools) and 'bindgen'. The initial minimum will be the pinned version we currently have, i.e. we are just widening the allowed versions. That covers 3 stable Rust releases: 1.78.0, 1.79.0, 1.80.0 (getting released tomorrow), plus beta, plus nightly. This should already be enough for kernel developers in distributions that provide recent Rust compiler versions routinely, such as Arch Linux, Debian Unstable (outside the freeze period), Fedora Linux, Gentoo Linux (especially the testing channel), Nix (unstable) and openSUSE Slowroll and Tumbleweed. In addition, the kernel is now being built-tested by Rust's pre-merge CI. That is, every change that is attempting to land into the Rust compiler is tested against the kernel, and it is merged only if it passes. Similarly, the bindgen tool has agreed to build the kernel in their CI too. Thus, with the pre-merge CI in place, both projects hope to avoid unintentional changes to Rust that break the kernel. This means that, in general, apart from intentional changes on their side (that we will need to workaround conditionally on our side), the upcoming Rust compiler versions should generally work. In addition, the Rust project has proposed getting the kernel into stable Rust (at least solving the main blockers) as one of its three flagship goals for 2024H2 [1]. I would like to thank Niko, Sid, Emilio et al. for their help promoting the collaboration between Rust and the kernel. [1] https://rust-lang.github.io/rust-project-goals/2024h2/index.html#flagship-goals Toolchain and infrastructure: - Support several Rust toolchain versions. - Support several bindgen versions. - Remove 'cargo' requirement and simplify 'rusttest', thanks to 'alloc' having been dropped last cycle. - Provide proper error reporting for the 'rust-analyzer' target. 'kernel' crate: - Add 'uaccess' module with a safe userspace pointers abstraction. - Add 'page' module with a 'struct page' abstraction. - Support more complex generics in workqueue's 'impl_has_work!' macro. 'macros' crate: - Add 'firmware' field support to the 'module!' macro. - Improve 'module!' macro documentation. Documentation: - Provide instructions on what packages should be installed to build the kernel in some popular Linux distributions. - Introduce the new kernel.org LLVM+Rust toolchains. - Explain '#[no_std]'. And a few other small bits. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPjU5OPd5QIZ9jqqOGXyLc2htIW0FAmahqRUACgkQGXyLc2ht IW0xbA/6A26b14LjvmFBJU6LZb0ey1BCbK9cOWtd6K6f/uWp108WAIdA/+gHgOGU I6rW8nXk3af078lHRqv0ihMDUks/1mz5wyxEXoZ/mVvRJbzH9TsHN7cSP2fr4H14 8rES4esr2XBlu9OdgDFb/o7jequ7PE0+WQDapV6eAhWQlBC6AI+ShyX26pWcB5gv 8O4mE59Up51d21L8apVh+pnEgBsCsu7c68pUMbrk2k4sHVvnRti4iLoVlemf4X80 Di9hyi8iN/MvWMdfq+hCIufUIbcWde07HcCbLjQlkJv0sc20V+UIGUx4EOUasOTY ugUyzhlFNGPxJYayAZAb8KJtQZhSbGZ+R244Z/CoV2RMlEw9LxSCpyzHr1nalOLT 01gqZh6+gIFyPm6F0ORsetcV6yzdvUcGTjx1vuEJ9qqeKG/gc/VqFOcmCPaT7y8K nTOMg6zY3mzaqTn1iBebid7INzXJN7ha9dk1TkDv47BNZAic51d3L0hQFXuDrEuu MxVIPTAPKJSaQTCh0jrLxLJ649v/98OP0urYqlVeKuTeovupETxCsBTVtjjjsv+w ZomqEO+JWuf7hjG0RLuCwi/IvWpUFpEdOal4qfHbKLOAOn7zxV/WrG675HcRKbw5 Zkr/0Q44fwbZWd2b/svTO1qOKaYV7oL0utVOdUb2KX05K71NNVo= =8PYF -----END PGP SIGNATURE----- Merge tag 'rust-6.11' of https://github.com/Rust-for-Linux/linux Pull Rust updates from Miguel Ojeda: "The highlight is the establishment of a minimum version for the Rust toolchain, including 'rustc' (and bundled tools) and 'bindgen'. The initial minimum will be the pinned version we currently have, i.e. we are just widening the allowed versions. That covers three stable Rust releases: 1.78.0, 1.79.0, 1.80.0 (getting released tomorrow), plus beta, plus nightly. This should already be enough for kernel developers in distributions that provide recent Rust compiler versions routinely, such as Arch Linux, Debian Unstable (outside the freeze period), Fedora Linux, Gentoo Linux (especially the testing channel), Nix (unstable) and openSUSE Slowroll and Tumbleweed. In addition, the kernel is now being built-tested by Rust's pre-merge CI. That is, every change that is attempting to land into the Rust compiler is tested against the kernel, and it is merged only if it passes. Similarly, the bindgen tool has agreed to build the kernel in their CI too. Thus, with the pre-merge CI in place, both projects hope to avoid unintentional changes to Rust that break the kernel. This means that, in general, apart from intentional changes on their side (that we will need to workaround conditionally on our side), the upcoming Rust compiler versions should generally work. In addition, the Rust project has proposed getting the kernel into stable Rust (at least solving the main blockers) as one of its three flagship goals for 2024H2 [1]. I would like to thank Niko, Sid, Emilio et al. for their help promoting the collaboration between Rust and the kernel. Toolchain and infrastructure: - Support several Rust toolchain versions. - Support several bindgen versions. - Remove 'cargo' requirement and simplify 'rusttest', thanks to 'alloc' having been dropped last cycle. - Provide proper error reporting for the 'rust-analyzer' target. 'kernel' crate: - Add 'uaccess' module with a safe userspace pointers abstraction. - Add 'page' module with a 'struct page' abstraction. - Support more complex generics in workqueue's 'impl_has_work!' macro. 'macros' crate: - Add 'firmware' field support to the 'module!' macro. - Improve 'module!' macro documentation. Documentation: - Provide instructions on what packages should be installed to build the kernel in some popular Linux distributions. - Introduce the new kernel.org LLVM+Rust toolchains. - Explain '#[no_std]'. And a few other small bits" Link: https://rust-lang.github.io/rust-project-goals/2024h2/index.html#flagship-goals [1] * tag 'rust-6.11' of https://github.com/Rust-for-Linux/linux: (26 commits) docs: rust: quick-start: add section on Linux distributions rust: warn about `bindgen` versions 0.66.0 and 0.66.1 rust: start supporting several `bindgen` versions rust: work around `bindgen` 0.69.0 issue rust: avoid assuming a particular `bindgen` build rust: start supporting several compiler versions rust: simplify Clippy warning flags set rust: relax most deny-level lints to warnings rust: allow `dead_code` for never constructed bindings rust: init: simplify from `map_err` to `inspect_err` rust: macros: indent list item in `paste!`'s docs rust: add abstraction for `struct page` rust: uaccess: add typed accessors for userspace pointers uaccess: always export _copy_[from|to]_user with CONFIG_RUST rust: uaccess: add userspace pointers kbuild: rust-analyzer: improve comment documentation kbuild: rust-analyzer: better error handling docs: rust: no_std is used rust: alloc: add __GFP_HIGHMEM flag rust: alloc: fix typo in docs for GFP_NOWAIT ... |
||
|
Linus Torvalds
|
7b0acd911c |
11 hotfixes, 7 of which are cc:stable. 7 are MM, 4 are other.
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZqQWWQAKCRDdBJ7gKXxA jqJVAP9vU9HNzIyKDOOqoNHKMI+VzGn39w1FihWjG6AU5a+9NQD+MZJwr7bBwkpH ii43HLUGvNRQtsldBZSRypsaitCSwAI= =HGce -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2024-07-26-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc hotfixes from Andrew Morton: "11 hotfixes, 7 of which are cc:stable. 7 are MM, 4 are other" * tag 'mm-hotfixes-stable-2024-07-26-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: nilfs2: handle inconsistent state in nilfs_btnode_create_block() selftests/mm: skip test for non-LPA2 and non-LVA systems mm/page_alloc: fix pcp->count race between drain_pages_zone() vs __rmqueue_pcplist() mm: memcg: add cacheline padding after lruvec in mem_cgroup_per_node alloc_tag: outline and export free_reserved_page() decompress_bunzip2: fix rare decompression failure mm/huge_memory: avoid PMD-size page cache if needed mm: huge_memory: use !CONFIG_64BIT to relax huge page alignment on 32 bit machines mm: fix old/young bit handling in the faulting path dt-bindings: arm: update James Clark's email address MAINTAINERS: mailmap: update James Clark's email address |
||
|
Ross Lagerwall
|
bf6acd5d16 |
decompress_bunzip2: fix rare decompression failure
The decompression code parses a huffman tree and counts the number of
symbols for a given bit length. In rare cases, there may be >= 256
symbols with a given bit length, causing the unsigned char to overflow.
This causes a decompression failure later when the code tries and fails to
find the bit length for a given symbol.
Since the maximum number of symbols is 258, use unsigned short instead.
Link: https://lkml.kernel.org/r/20240717162016.1514077-1-ross.lagerwall@citrix.com
Fixes:
|
||
|
Linus Torvalds
|
51c4767503 |
bitmap-6.11-rc1
Random fixes for v6.11. -----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEEi8GdvG6xMhdgpu/4sUSA/TofvsgFAmahKbIACgkQsUSA/Tof vsh8zQwAvguyeNubDFqdMe3E/Vp1J3WqXsBFzbE1rGLCyI2S0cgJFL5BlW51zY47 70wLt9EmroEobwj1qHSQlzejNp31kSBQ1Sqq25oivfJqEF1elDT5PQxYqBbU1C9Y kVWnxtb+oKaoFd5jiBK8+iTl8dXjT6H2RoV0zpPab/JPcqsjwFfkUvtENt/Kpo5c aRrGTFwshdp5eT4sEZQv57VKroBcwZOvv2//qrklFHrJHl4pjMT8eaX3twcQysoy umTVt+TK6NErLnht+VRQJ2/L02FKi7b+bHePVgNzaT+1FSDMT4FltmZd96Xwbzah hSkwWtqy0N2gaTcqie9nwdEiCJGjF39M7k2wangUS91CeDsbIUSsJgDCESUCm+zK hRqleGOnoeg4+jZBci7M53lKa/pADlmLhnU8iAc3BSKozsaioltkT+hHn8vAkstk h/kHlbfkzasufUWAhduBpIn384gWWEY6RACffgCsOuvbT+ZyDKUJpKYaEwVx+Pri l72j0hs9 =RbET -----END PGP SIGNATURE----- Merge tag 'bitmap-6.11-rc1' of https://github.com:/norov/linux Pull bitmap updates from Yury Norov: "Random fixes" * tag 'bitmap-6.11-rc1' of https://github.com:/norov/linux: riscv: Remove unnecessary int cast in variable_fls() radix tree test suite: put definition of bitmap_clear() into lib/bitmap.c bitops: Add a comment explaining the double underscore macros lib: bitmap: add missing MODULE_DESCRIPTION() macros cpumask: introduce assign_cpu() macro |
||
|
Linus Torvalds
|
8bf100092d |
trivial printk changes for 6.11
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||
|
Linus Torvalds
|
c2a96b7f18 |
Driver core changes for 6.11-rc1
Here is the big set of driver core changes for 6.11-rc1.
Lots of stuff in here, with not a huge diffstat, but apis are evolving
which required lots of files to be touched. Highlights of the changes
in here are:
- platform remove callback api final fixups (Uwe took many releases to
get here, finally!)
- Rust bindings for basic firmware apis and initial driver-core
interactions. It's not all that useful for a "write a whole driver
in rust" type of thing, but the firmware bindings do help out the
phy rust drivers, and the driver core bindings give a solid base on
which others can start their work. There is still a long way to go
here before we have a multitude of rust drivers being added, but
it's a great first step.
- driver core const api changes. This reached across all bus types,
and there are some fix-ups for some not-common bus types that
linux-next and 0-day testing shook out. This work is being done to
help make the rust bindings more safe, as well as the C code, moving
toward the end-goal of allowing us to put driver structures into
read-only memory. We aren't there yet, but are getting closer.
- minor devres cleanups and fixes found by code inspection
- arch_topology minor changes
- other minor driver core cleanups
All of these have been in linux-next for a very long time with no
reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the big set of driver core changes for 6.11-rc1.
Lots of stuff in here, with not a huge diffstat, but apis are evolving
which required lots of files to be touched. Highlights of the changes
in here are:
- platform remove callback api final fixups (Uwe took many releases
to get here, finally!)
- Rust bindings for basic firmware apis and initial driver-core
interactions.
It's not all that useful for a "write a whole driver in rust" type
of thing, but the firmware bindings do help out the phy rust
drivers, and the driver core bindings give a solid base on which
others can start their work.
There is still a long way to go here before we have a multitude of
rust drivers being added, but it's a great first step.
- driver core const api changes.
This reached across all bus types, and there are some fix-ups for
some not-common bus types that linux-next and 0-day testing shook
out.
This work is being done to help make the rust bindings more safe,
as well as the C code, moving toward the end-goal of allowing us to
put driver structures into read-only memory. We aren't there yet,
but are getting closer.
- minor devres cleanups and fixes found by code inspection
- arch_topology minor changes
- other minor driver core cleanups
All of these have been in linux-next for a very long time with no
reported problems"
* tag 'driver-core-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (55 commits)
ARM: sa1100: make match function take a const pointer
sysfs/cpu: Make crash_hotplug attribute world-readable
dio: Have dio_bus_match() callback take a const *
zorro: make match function take a const pointer
driver core: module: make module_[add|remove]_driver take a const *
driver core: make driver_find_device() take a const *
driver core: make driver_[create|remove]_file take a const *
firmware_loader: fix soundness issue in `request_internal`
firmware_loader: annotate doctests as `no_run`
devres: Correct code style for functions that return a pointer type
devres: Initialize an uninitialized struct member
devres: Fix memory leakage caused by driver API devm_free_percpu()
devres: Fix devm_krealloc() wasting memory
driver core: platform: Switch to use kmemdup_array()
driver core: have match() callback in struct bus_type take a const *
MAINTAINERS: add Rust device abstractions to DRIVER CORE
device: rust: improve safety comments
MAINTAINERS: add Danilo as FIRMWARE LOADER maintainer
MAINTAINERS: add Rust FW abstractions to FIRMWARE LOADER
firmware: rust: improve safety comments
...
|
||
|
Linus Torvalds
|
7a3fad30fd |
Random number generator updates for Linux 6.11-rc1.
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||
|
Linus Torvalds
|
7d080fa867 |
for-6.11/block-20240722
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Merge tag 'for-6.11/block-20240722' of git://git.kernel.dk/linux
Pull more block updates from Jens Axboe:
- MD fixes via Song:
- md-cluster fixes (Heming Zhao)
- raid1 fix (Mateusz Jończyk)
- s390/dasd module description (Jeff)
- Series cleaning up and hardening the blk-mq debugfs flag handling
(John, Christoph)
- blk-cgroup cleanup (Xiu)
- Error polled IO attempts if backend doesn't support it (hexue)
- Fix for an sbitmap hang (Yang)
* tag 'for-6.11/block-20240722' of git://git.kernel.dk/linux: (23 commits)
blk-cgroup: move congestion_count to struct blkcg
sbitmap: fix io hung due to race on sbitmap_word::cleared
block: avoid polling configuration errors
block: Catch possible entries missing from rqf_name[]
block: Simplify definition of RQF_NAME()
block: Use enum to define RQF_x bit indexes
block: Catch possible entries missing from cmd_flag_name[]
block: Catch possible entries missing from alloc_policy_name[]
block: Catch possible entries missing from hctx_flag_name[]
block: Catch possible entries missing from hctx_state_name[]
block: Catch possible entries missing from blk_queue_flag_name[]
block: Make QUEUE_FLAG_x as an enum
block: Relocate BLK_MQ_MAX_DEPTH
block: Relocate BLK_MQ_CPU_WORK_BATCH
block: remove QUEUE_FLAG_STOPPED
block: Add missing entry to hctx_flag_name[]
block: Add zone write plugging entry to rqf_name[]
block: Add missing entries from cmd_flag_name[]
s390/dasd: fix error checks in dasd_copy_pair_store()
s390/dasd: add missing MODULE_DESCRIPTION() macros
...
|
||
|
Linus Torvalds
|
527eff227d |
- In the series "treewide: Refactor heap related implementation",
Kuan-Wei Chiu has significantly reworked the min_heap library code and has taught bcachefs to use the new more generic implementation. - Yury Norov's series "Cleanup cpumask.h inclusion in core headers" reworks the cpumask and nodemask headers to make things generally more rational. - Kuan-Wei Chiu has sent along some maintenance work against our sorting library code in the series "lib/sort: Optimizations and cleanups". - More library maintainance work from Christophe Jaillet in the series "Remove usage of the deprecated ida_simple_xx() API". - Ryusuke Konishi continues with the nilfs2 fixes and clanups in the series "nilfs2: eliminate the call to inode_attach_wb()". - Kuan-Ying Lee has some fixes to the gdb scripts in the series "Fix GDB command error". - Plus the usual shower of singleton patches all over the place. Please see the relevant changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZp2GvwAKCRDdBJ7gKXxA jlf/AP48xP5ilIHbtpAKm2z+MvGuTxJQ5VSC0UXFacuCbc93lAEA+Yo+vOVRmh6j fQF2nVKyKLYfSz7yqmCyAaHWohIYLgg= =Stxz -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2024-07-21-15-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - In the series "treewide: Refactor heap related implementation", Kuan-Wei Chiu has significantly reworked the min_heap library code and has taught bcachefs to use the new more generic implementation. - Yury Norov's series "Cleanup cpumask.h inclusion in core headers" reworks the cpumask and nodemask headers to make things generally more rational. - Kuan-Wei Chiu has sent along some maintenance work against our sorting library code in the series "lib/sort: Optimizations and cleanups". - More library maintainance work from Christophe Jaillet in the series "Remove usage of the deprecated ida_simple_xx() API". - Ryusuke Konishi continues with the nilfs2 fixes and clanups in the series "nilfs2: eliminate the call to inode_attach_wb()". - Kuan-Ying Lee has some fixes to the gdb scripts in the series "Fix GDB command error". - Plus the usual shower of singleton patches all over the place. Please see the relevant changelogs for details. * tag 'mm-nonmm-stable-2024-07-21-15-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (98 commits) ia64: scrub ia64 from poison.h watchdog/perf: properly initialize the turbo mode timestamp and rearm counter tsacct: replace strncpy() with strscpy() lib/bch.c: use swap() to improve code test_bpf: convert comma to semicolon init/modpost: conditionally check section mismatch to __meminit* init: remove unused __MEMINIT* macros nilfs2: Constify struct kobj_type nilfs2: avoid undefined behavior in nilfs_cnt32_ge macro math: rational: add missing MODULE_DESCRIPTION() macro lib/zlib: add missing MODULE_DESCRIPTION() macro fs: ufs: add MODULE_DESCRIPTION() lib/rbtree.c: fix the example typo ocfs2: add bounds checking to ocfs2_check_dir_entry() fs: add kernel-doc comments to ocfs2_prepare_orphan_dir() coredump: simplify zap_process() selftests/fpu: add missing MODULE_DESCRIPTION() macro compiler.h: simplify data_race() macro build-id: require program headers to be right after ELF header resource: add missing MODULE_DESCRIPTION() ... |
||
|
Linus Torvalds
|
fbc90c042c |
- 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN
walkers") is known to cause a performance regression (https://lore.kernel.org/all/3acefad9-96e5-4681-8014-827d6be71c7a@linux.ibm.com/T/#mfa809800a7862fb5bdf834c6f71a3a5113eb83ff). Yu has a fix which I'll send along later via the hotfixes branch. - In the series "mm: Avoid possible overflows in dirty throttling" Jan Kara addresses a couple of issues in the writeback throttling code. These fixes are also targetted at -stable kernels. - Ryusuke Konishi's series "nilfs2: fix potential issues related to reserved inodes" does that. This should actually be in the mm-nonmm-stable tree, along with the many other nilfs2 patches. My bad. - More folio conversions from Kefeng Wang in the series "mm: convert to folio_alloc_mpol()" - Kemeng Shi has sent some cleanups to the writeback code in the series "Add helper functions to remove repeated code and improve readability of cgroup writeback" - Kairui Song has made the swap code a little smaller and a little faster in the series "mm/swap: clean up and optimize swap cache index". - In the series "mm/memory: cleanly support zeropage in vm_insert_page*(), vm_map_pages*() and vmf_insert_mixed()" David Hildenbrand has reworked the rather sketchy handling of the use of the zeropage in MAP_SHARED mappings. I don't see any runtime effects here - more a cleanup/understandability/maintainablity thing. - Dev Jain has improved selftests/mm/va_high_addr_switch.c's handling of higher addresses, for aarch64. The (poorly named) series is "Restructure va_high_addr_switch". - The core TLB handling code gets some cleanups and possible slight optimizations in Bang Li's series "Add update_mmu_tlb_range() to simplify code". - Jane Chu has improved the handling of our fake-an-unrecoverable-memory-error testing feature MADV_HWPOISON in the series "Enhance soft hwpoison handling and injection". - Jeff Johnson has sent a billion patches everywhere to add MODULE_DESCRIPTION() to everything. Some landed in this pull. - In the series "mm: cleanup MIGRATE_SYNC_NO_COPY mode", Kefeng Wang has simplified migration's use of hardware-offload memory copying. - Yosry Ahmed performs more folio API conversions in his series "mm: zswap: trivial folio conversions". - In the series "large folios swap-in: handle refault cases first", Chuanhua Han inches us forward in the handling of large pages in the swap code. This is a cleanup and optimization, working toward the end objective of full support of large folio swapin/out. - In the series "mm,swap: cleanup VMA based swap readahead window calculation", Huang Ying has contributed some cleanups and a possible fixlet to his VMA based swap readahead code. - In the series "add mTHP support for anonymous shmem" Baolin Wang has taught anonymous shmem mappings to use multisize THP. By default this is a no-op - users must opt in vis sysfs controls. Dramatic improvements in pagefault latency are realized. - David Hildenbrand has some cleanups to our remaining use of page_mapcount() in the series "fs/proc: move page_mapcount() to fs/proc/internal.h". - David also has some highmem accounting cleanups in the series "mm/highmem: don't track highmem pages manually". - Build-time fixes and cleanups from John Hubbard in the series "cleanups, fixes, and progress towards avoiding "make headers"". - Cleanups and consolidation of the core pagemap handling from Barry Song in the series "mm: introduce pmd|pte_needs_soft_dirty_wp helpers and utilize them". - Lance Yang's series "Reclaim lazyfree THP without splitting" has reduced the latency of the reclaim of pmd-mapped THPs under fairly common circumstances. A 10x speedup is seen in a microbenchmark. It does this by punting to aother CPU but I guess that's a win unless all CPUs are pegged. - hugetlb_cgroup cleanups from Xiu Jianfeng in the series "mm/hugetlb_cgroup: rework on cftypes". - Miaohe Lin's series "Some cleanups for memory-failure" does just that thing. - Is anyone reading this stuff? If so, email me! - Someone other than SeongJae has developed a DAMON feature in Honggyu Kim's series "DAMON based tiered memory management for CXL memory". This adds DAMON features which may be used to help determine the efficiency of our placement of CXL/PCIe attached DRAM. - DAMON user API centralization and simplificatio work in SeongJae Park's series "mm/damon: introduce DAMON parameters online commit function". - In the series "mm: page_type, zsmalloc and page_mapcount_reset()" David Hildenbrand does some maintenance work on zsmalloc - partially modernizing its use of pageframe fields. - Kefeng Wang provides more folio conversions in the series "mm: remove page_maybe_dma_pinned() and page_mkclean()". - More cleanup from David Hildenbrand, this time in the series "mm/memory_hotplug: use PageOffline() instead of PageReserved() for !ZONE_DEVICE". It "enlightens memory hotplug more about PageOffline() pages" and permits the removal of some virtio-mem hacks. - Barry Song's series "mm: clarify folio_add_new_anon_rmap() and __folio_add_anon_rmap()" is a cleanup to the anon folio handling in preparation for mTHP (multisize THP) swapin. - Kefeng Wang's series "mm: improve clear and copy user folio" implements more folio conversions, this time in the area of large folio userspace copying. - The series "Docs/mm/damon/maintaier-profile: document a mailing tool and community meetup series" tells people how to get better involved with other DAMON developers. From SeongJae Park. - A large series ("kmsan: Enable on s390") from Ilya Leoshkevich does that. - David Hildenbrand sends along more cleanups, this time against the migration code. The series is "mm/migrate: move NUMA hinting fault folio isolation + checks under PTL". - Jan Kara has found quite a lot of strangenesses and minor errors in the readahead code. He addresses this in the series "mm: Fix various readahead quirks". - SeongJae Park's series "selftests/damon: test DAMOS tried regions and {min,max}_nr_regions" adds features and addresses errors in DAMON's self testing code. - Gavin Shan has found a userspace-triggerable WARN in the pagecache code. The series "mm/filemap: Limit page cache size to that supported by xarray" addresses this. The series is marked cc:stable. - Chengming Zhou's series "mm/ksm: cmp_and_merge_page() optimizations and cleanup" cleans up and slightly optimizes KSM. - Roman Gushchin has separated the memcg-v1 and memcg-v2 code - lots of code motion. The series (which also makes the memcg-v1 code Kconfigurable) are "mm: memcg: separate legacy cgroup v1 code and put under config option" and "mm: memcg: put cgroup v1-specific memcg data under CONFIG_MEMCG_V1" - Dan Schatzberg's series "Add swappiness argument to memory.reclaim" adds an additional feature to this cgroup-v2 control file. - The series "Userspace controls soft-offline pages" from Jiaqi Yan permits userspace to stop the kernel's automatic treatment of excessive correctable memory errors. In order to permit userspace to monitor and handle this situation. - Kefeng Wang's series "mm: migrate: support poison recover from migrate folio" teaches the kernel to appropriately handle migration from poisoned source folios rather than simply panicing. - SeongJae Park's series "Docs/damon: minor fixups and improvements" does those things. - In the series "mm/zsmalloc: change back to per-size_class lock" Chengming Zhou improves zsmalloc's scalability and memory utilization. - Vivek Kasireddy's series "mm/gup: Introduce memfd_pin_folios() for pinning memfd folios" makes the GUP code use FOLL_PIN rather than bare refcount increments. So these paes can first be moved aside if they reside in the movable zone or a CMA block. - Andrii Nakryiko has added a binary ioctl()-based API to /proc/pid/maps for much faster reading of vma information. The series is "query VMAs from /proc/<pid>/maps". - In the series "mm: introduce per-order mTHP split counters" Lance Yang improves the kernel's presentation of developer information related to multisize THP splitting. - Michael Ellerman has developed the series "Reimplement huge pages without hugepd on powerpc (8xx, e500, book3s/64)". This permits userspace to use all available huge page sizes. - In the series "revert unconditional slab and page allocator fault injection calls" Vlastimil Babka removes a performance-affecting and not very useful feature from slab fault injection. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZp2C+QAKCRDdBJ7gKXxA joTkAQDvjqOoFStqk4GU3OXMYB7WCU/ZQMFG0iuu1EEwTVDZ4QEA8CnG7seek1R3 xEoo+vw0sWWeLV3qzsxnCA1BJ8cTJA8= =z0Lf -----END PGP SIGNATURE----- Merge tag 'mm-stable-2024-07-21-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - In the series "mm: Avoid possible overflows in dirty throttling" Jan Kara addresses a couple of issues in the writeback throttling code. These fixes are also targetted at -stable kernels. - Ryusuke Konishi's series "nilfs2: fix potential issues related to reserved inodes" does that. This should actually be in the mm-nonmm-stable tree, along with the many other nilfs2 patches. My bad. - More folio conversions from Kefeng Wang in the series "mm: convert to folio_alloc_mpol()" - Kemeng Shi has sent some cleanups to the writeback code in the series "Add helper functions to remove repeated code and improve readability of cgroup writeback" - Kairui Song has made the swap code a little smaller and a little faster in the series "mm/swap: clean up and optimize swap cache index". - In the series "mm/memory: cleanly support zeropage in vm_insert_page*(), vm_map_pages*() and vmf_insert_mixed()" David Hildenbrand has reworked the rather sketchy handling of the use of the zeropage in MAP_SHARED mappings. I don't see any runtime effects here - more a cleanup/understandability/maintainablity thing. - Dev Jain has improved selftests/mm/va_high_addr_switch.c's handling of higher addresses, for aarch64. The (poorly named) series is "Restructure va_high_addr_switch". - The core TLB handling code gets some cleanups and possible slight optimizations in Bang Li's series "Add update_mmu_tlb_range() to simplify code". - Jane Chu has improved the handling of our fake-an-unrecoverable-memory-error testing feature MADV_HWPOISON in the series "Enhance soft hwpoison handling and injection". - Jeff Johnson has sent a billion patches everywhere to add MODULE_DESCRIPTION() to everything. Some landed in this pull. - In the series "mm: cleanup MIGRATE_SYNC_NO_COPY mode", Kefeng Wang has simplified migration's use of hardware-offload memory copying. - Yosry Ahmed performs more folio API conversions in his series "mm: zswap: trivial folio conversions". - In the series "large folios swap-in: handle refault cases first", Chuanhua Han inches us forward in the handling of large pages in the swap code. This is a cleanup and optimization, working toward the end objective of full support of large folio swapin/out. - In the series "mm,swap: cleanup VMA based swap readahead window calculation", Huang Ying has contributed some cleanups and a possible fixlet to his VMA based swap readahead code. - In the series "add mTHP support for anonymous shmem" Baolin Wang has taught anonymous shmem mappings to use multisize THP. By default this is a no-op - users must opt in vis sysfs controls. Dramatic improvements in pagefault latency are realized. - David Hildenbrand has some cleanups to our remaining use of page_mapcount() in the series "fs/proc: move page_mapcount() to fs/proc/internal.h". - David also has some highmem accounting cleanups in the series "mm/highmem: don't track highmem pages manually". - Build-time fixes and cleanups from John Hubbard in the series "cleanups, fixes, and progress towards avoiding "make headers"". - Cleanups and consolidation of the core pagemap handling from Barry Song in the series "mm: introduce pmd|pte_needs_soft_dirty_wp helpers and utilize them". - Lance Yang's series "Reclaim lazyfree THP without splitting" has reduced the latency of the reclaim of pmd-mapped THPs under fairly common circumstances. A 10x speedup is seen in a microbenchmark. It does this by punting to aother CPU but I guess that's a win unless all CPUs are pegged. - hugetlb_cgroup cleanups from Xiu Jianfeng in the series "mm/hugetlb_cgroup: rework on cftypes". - Miaohe Lin's series "Some cleanups for memory-failure" does just that thing. - Someone other than SeongJae has developed a DAMON feature in Honggyu Kim's series "DAMON based tiered memory management for CXL memory". This adds DAMON features which may be used to help determine the efficiency of our placement of CXL/PCIe attached DRAM. - DAMON user API centralization and simplificatio work in SeongJae Park's series "mm/damon: introduce DAMON parameters online commit function". - In the series "mm: page_type, zsmalloc and page_mapcount_reset()" David Hildenbrand does some maintenance work on zsmalloc - partially modernizing its use of pageframe fields. - Kefeng Wang provides more folio conversions in the series "mm: remove page_maybe_dma_pinned() and page_mkclean()". - More cleanup from David Hildenbrand, this time in the series "mm/memory_hotplug: use PageOffline() instead of PageReserved() for !ZONE_DEVICE". It "enlightens memory hotplug more about PageOffline() pages" and permits the removal of some virtio-mem hacks. - Barry Song's series "mm: clarify folio_add_new_anon_rmap() and __folio_add_anon_rmap()" is a cleanup to the anon folio handling in preparation for mTHP (multisize THP) swapin. - Kefeng Wang's series "mm: improve clear and copy user folio" implements more folio conversions, this time in the area of large folio userspace copying. - The series "Docs/mm/damon/maintaier-profile: document a mailing tool and community meetup series" tells people how to get better involved with other DAMON developers. From SeongJae Park. - A large series ("kmsan: Enable on s390") from Ilya Leoshkevich does that. - David Hildenbrand sends along more cleanups, this time against the migration code. The series is "mm/migrate: move NUMA hinting fault folio isolation + checks under PTL". - Jan Kara has found quite a lot of strangenesses and minor errors in the readahead code. He addresses this in the series "mm: Fix various readahead quirks". - SeongJae Park's series "selftests/damon: test DAMOS tried regions and {min,max}_nr_regions" adds features and addresses errors in DAMON's self testing code. - Gavin Shan has found a userspace-triggerable WARN in the pagecache code. The series "mm/filemap: Limit page cache size to that supported by xarray" addresses this. The series is marked cc:stable. - Chengming Zhou's series "mm/ksm: cmp_and_merge_page() optimizations and cleanup" cleans up and slightly optimizes KSM. - Roman Gushchin has separated the memcg-v1 and memcg-v2 code - lots of code motion. The series (which also makes the memcg-v1 code Kconfigurable) are "mm: memcg: separate legacy cgroup v1 code and put under config option" and "mm: memcg: put cgroup v1-specific memcg data under CONFIG_MEMCG_V1" - Dan Schatzberg's series "Add swappiness argument to memory.reclaim" adds an additional feature to this cgroup-v2 control file. - The series "Userspace controls soft-offline pages" from Jiaqi Yan permits userspace to stop the kernel's automatic treatment of excessive correctable memory errors. In order to permit userspace to monitor and handle this situation. - Kefeng Wang's series "mm: migrate: support poison recover from migrate folio" teaches the kernel to appropriately handle migration from poisoned source folios rather than simply panicing. - SeongJae Park's series "Docs/damon: minor fixups and improvements" does those things. - In the series "mm/zsmalloc: change back to per-size_class lock" Chengming Zhou improves zsmalloc's scalability and memory utilization. - Vivek Kasireddy's series "mm/gup: Introduce memfd_pin_folios() for pinning memfd folios" makes the GUP code use FOLL_PIN rather than bare refcount increments. So these paes can first be moved aside if they reside in the movable zone or a CMA block. - Andrii Nakryiko has added a binary ioctl()-based API to /proc/pid/maps for much faster reading of vma information. The series is "query VMAs from /proc/<pid>/maps". - In the series "mm: introduce per-order mTHP split counters" Lance Yang improves the kernel's presentation of developer information related to multisize THP splitting. - Michael Ellerman has developed the series "Reimplement huge pages without hugepd on powerpc (8xx, e500, book3s/64)". This permits userspace to use all available huge page sizes. - In the series "revert unconditional slab and page allocator fault injection calls" Vlastimil Babka removes a performance-affecting and not very useful feature from slab fault injection. * tag 'mm-stable-2024-07-21-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (411 commits) mm/mglru: fix ineffective protection calculation mm/zswap: fix a white space issue mm/hugetlb: fix kernel NULL pointer dereference when migrating hugetlb folio mm/hugetlb: fix possible recursive locking detected warning mm/gup: clear the LRU flag of a page before adding to LRU batch mm/numa_balancing: teach mpol_to_str about the balancing mode mm: memcg1: convert charge move flags to unsigned long long alloc_tag: fix page_ext_get/page_ext_put sequence during page splitting lib: reuse page_ext_data() to obtain codetag_ref lib: add missing newline character in the warning message mm/mglru: fix overshooting shrinker memory mm/mglru: fix div-by-zero in vmpressure_calc_level() mm/kmemleak: replace strncpy() with strscpy() mm, page_alloc: put should_fail_alloc_page() back behing CONFIG_FAIL_PAGE_ALLOC mm, slab: put should_failslab() back behind CONFIG_SHOULD_FAILSLAB mm: ignore data-race in __swap_writepage hugetlbfs: ensure generic_hugetlb_get_unmapped_area() returns higher address than mmap_min_addr mm: shmem: rename mTHP shmem counters mm: swap_state: use folio_alloc_mpol() in __read_swap_cache_async() mm/migrate: putback split folios when numa hint migration fails ... |
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Linus Torvalds
|
acc5965b9f |
Char/Misc and other driver changes for 6.11-rc1
Here is the "big" set of char/misc and other driver subsystem changes for 6.11-rc1. Nothing major in here, just loads of new drivers and updates. Included in here are: - IIO api updates and new drivers added - wait_interruptable_timeout() api cleanups for some drivers - MODULE_DESCRIPTION() additions for loads of drivers - parport out-of-bounds fix - interconnect driver updates and additions - mhi driver updates and additions - w1 driver fixes - binder speedups and fixes - eeprom driver updates - coresight driver updates - counter driver update - new misc driver additions - other minor api updates All of these, EXCEPT for the final Kconfig build fix for 32bit systems, have been in linux-next for a while with no reported issues. The Kconfig fixup went in 29 hours ago, so might have missed the latest linux-next, but was acked by everyone involved. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZppR4w8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ykwoQCeIaW3nbOiNTmOupvEnZwrN3yVNs8An3Q5L+Br 1LpTASaU6A8pN81Z1m5g =6U1z -----END PGP SIGNATURE----- Merge tag 'char-misc-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char / misc and other driver updates from Greg KH: "Here is the "big" set of char/misc and other driver subsystem changes for 6.11-rc1. Nothing major in here, just loads of new drivers and updates. Included in here are: - IIO api updates and new drivers added - wait_interruptable_timeout() api cleanups for some drivers - MODULE_DESCRIPTION() additions for loads of drivers - parport out-of-bounds fix - interconnect driver updates and additions - mhi driver updates and additions - w1 driver fixes - binder speedups and fixes - eeprom driver updates - coresight driver updates - counter driver update - new misc driver additions - other minor api updates All of these, EXCEPT for the final Kconfig build fix for 32bit systems, have been in linux-next for a while with no reported issues. The Kconfig fixup went in 29 hours ago, so might have missed the latest linux-next, but was acked by everyone involved" * tag 'char-misc-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (330 commits) misc: Kconfig: exclude mrvl-cn10k-dpi compilation for 32-bit systems misc: delete Makefile.rej binder: fix hang of unregistered readers misc: Kconfig: add a new dependency for MARVELL_CN10K_DPI virtio: add missing MODULE_DESCRIPTION() macro agp: uninorth: add missing MODULE_DESCRIPTION() macro spmi: add missing MODULE_DESCRIPTION() macros dev/parport: fix the array out-of-bounds risk samples: configfs: add missing MODULE_DESCRIPTION() macro misc: mrvl-cn10k-dpi: add Octeon CN10K DPI administrative driver misc: keba: Fix missing AUXILIARY_BUS dependency slimbus: Fix struct and documentation alignment in stream.c MAINTAINERS: CC dri-devel list on Qualcomm FastRPC patches misc: fastrpc: use coherent pool for untranslated Compute Banks misc: fastrpc: support complete DMA pool access to the DSP misc: fastrpc: add missing MODULE_DESCRIPTION() macro misc: fastrpc: Add missing dev_err newlines misc: fastrpc: Use memdup_user() nvmem: core: Implement force_ro sysfs attribute nvmem: Use sysfs_emit() for type attribute ... |
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Jason A. Donenfeld
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4ad10a5f5f |
random: introduce generic vDSO getrandom() implementation
Provide a generic C vDSO getrandom() implementation, which operates on
an opaque state returned by vgetrandom_alloc() and produces random bytes
the same way as getrandom(). This has the following API signature:
ssize_t vgetrandom(void *buffer, size_t len, unsigned int flags,
void *opaque_state, size_t opaque_len);
The return value and the first three arguments are the same as ordinary
getrandom(), while the last two arguments are a pointer to the opaque
allocated state and its size. Were all five arguments passed to the
getrandom() syscall, nothing different would happen, and the functions
would have the exact same behavior.
The actual vDSO RNG algorithm implemented is the same one implemented by
drivers/char/random.c, using the same fast-erasure techniques as that.
Should the in-kernel implementation change, so too will the vDSO one.
It requires an implementation of ChaCha20 that does not use any stack,
in order to maintain forward secrecy if a multi-threaded program forks
(though this does not account for a similar issue with SA_SIGINFO
copying registers to the stack), so this is left as an
architecture-specific fill-in. Stack-less ChaCha20 is an easy algorithm
to implement on a variety of architectures, so this shouldn't be too
onerous.
Initially, the state is keyless, and so the first call makes a
getrandom() syscall to generate that key, and then uses it for
subsequent calls. By keeping track of a generation counter, it knows
when its key is invalidated and it should fetch a new one using the
syscall. Later, more than just a generation counter might be used.
Since MADV_WIPEONFORK is set on the opaque state, the key and related
state is wiped during a fork(), so secrets don't roll over into new
processes, and the same state doesn't accidentally generate the same
random stream. The generation counter, as well, is always >0, so that
the 0 counter is a useful indication of a fork() or otherwise
uninitialized state.
If the kernel RNG is not yet initialized, then the vDSO always calls the
syscall, because that behavior cannot be emulated in userspace, but
fortunately that state is short lived and only during early boot. If it
has been initialized, then there is no need to inspect the `flags`
argument, because the behavior does not change post-initialization
regardless of the `flags` value.
Since the opaque state passed to it is mutated, vDSO getrandom() is not
reentrant, when used with the same opaque state, which libc should be
mindful of.
The function works over an opaque per-thread state of a particular size,
which must be marked VM_WIPEONFORK, VM_DONTDUMP, VM_NORESERVE, and
VM_DROPPABLE for proper operation. Over time, the nuances of these
allocations may change or grow or even differ based on architectural
features.
The opaque state passed to vDSO getrandom() must be allocated using the
mmap_flags and mmap_prot parameters provided by the vgetrandom_opaque_params
struct, which also contains the size of each state. That struct can be
obtained with a call to vgetrandom(NULL, 0, 0, ¶ms, ~0UL). Then,
libc can call mmap(2) and slice up the returned array into a state per
each thread, while ensuring that no single state straddles a page
boundary. Libc is expected to allocate a chunk of these on first use,
and then dole them out to threads as they're created, allocating more
when needed.
vDSO getrandom() provides the ability for userspace to generate random
bytes quickly and safely, and is intended to be integrated into libc's
thread management. As an illustrative example, the introduced code in
the vdso_test_getrandom self test later in this series might be used to
do the same outside of libc. In a libc the various pthread-isms are
expected to be elided into libc internals.
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
|
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|
Linus Torvalds
|
c434e25b62 |
This update includes the following changes:
API: - Test setkey in no-SIMD context. - Add skcipher speed test for user-specified algorithm. Algorithms: - Add x25519 support on ppc64le. - Add VAES and AVX512 / AVX10 optimized AES-GCM on x86. - Remove sm2 algorithm. Drivers: - Add Allwinner H616 support to sun8i-ce. - Use DMA in stm32. - Add Exynos850 hwrng support to exynos. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEn51F/lCuNhUwmDeSxycdCkmxi6cFAmaZFsgACgkQxycdCkmx i6f76Q//ej7akY9fo6/qsn8UFK16O0SCEMkx7TrkxqHV8R6uwy4ret3+b5dbckY6 hBjDabiL/BAdNzo8hvta+BOtN6ToEqquSVwNCpX0U3YMLf9dIzcMA4Uri3LbxUHi x9Qa8klI5x62Kg+RW+ovaJC4C11oKTpjVeDn4S57MudlBnhEa3DYcEADKiUowkEz aigtLx8HrZYjwkQxwgWeS0xzeojhW1P20yaghOd6hTCD7vKw18JaKdD8r4YFGOBu 39eDaM/0vR+wWokk3NNl6NmXieBT8qLFt+OIbQs6b3gX9K37daahRs1VoShcL+ix l8GaqLpo1n1llVrV1OWzyVLVLtYK849QEo6OmlusnbK7e5pQKEOXoACQ0VB8ElNE 1u7KNW6CBWGzr33dWPgl9yYBrT3BmMXABIK4dNmTicJsK2zk2FPKbLDZNi8fWah/ D46mv7Rb8EtTdhN56EzceUJpd1ZfmP9S4vY1Hu8YdmI1pxex11US/XppKLoyymqp vNOzf85VuZ/GkUPfHdyWAFBnTaCjXtSBrlXD6+0nxavU9KGli0PLLX5tKNNWGw0l 51Z0tbNsDbo3Z+sMmtfvBXR2V8NwiAT5f775W0lLvpq/44mbDpdN3jGvfy9y9C7u 1DUC6F0XtUhZjR7e6/EhvHh3lB/a3w/m3+XC+XzDeox/VYTrC3Q= =x80X -----END PGP SIGNATURE----- Merge tag 'v6.11-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto update from Herbert Xu: "API: - Test setkey in no-SIMD context - Add skcipher speed test for user-specified algorithm Algorithms: - Add x25519 support on ppc64le - Add VAES and AVX512 / AVX10 optimized AES-GCM on x86 - Remove sm2 algorithm Drivers: - Add Allwinner H616 support to sun8i-ce - Use DMA in stm32 - Add Exynos850 hwrng support to exynos" * tag 'v6.11-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (81 commits) hwrng: core - remove (un)register_miscdev() crypto: lib/mpi - delete unnecessary condition crypto: testmgr - generate power-of-2 lengths more often crypto: mxs-dcp - Ensure payload is zero when using key slot hwrng: Kconfig - Do not enable by default CN10K driver crypto: starfive - Fix nent assignment in rsa dec crypto: starfive - Align rsa input data to 32-bit crypto: qat - fix unintentional re-enabling of error interrupts crypto: qat - extend scope of lock in adf_cfg_add_key_value_param() Documentation: qat: fix auto_reset attribute details crypto: sun8i-ce - add Allwinner H616 support crypto: sun8i-ce - wrap accesses to descriptor address fields dt-bindings: crypto: sun8i-ce: Add compatible for H616 hwrng: core - Fix wrong quality calculation at hw rng registration hwrng: exynos - Enable Exynos850 support hwrng: exynos - Add SMC based TRNG operation hwrng: exynos - Implement bus clock control hwrng: exynos - Use devm_clk_get_enabled() to get the clock hwrng: exynos - Improve coding style dt-bindings: rng: Add Exynos850 support to exynos-trng ... |
||
|
Yang Yang
|
72d04bdcf3 |
sbitmap: fix io hung due to race on sbitmap_word::cleared
Configuration for sbq:
depth=64, wake_batch=6, shift=6, map_nr=1
1. There are 64 requests in progress:
map->word = 0xFFFFFFFFFFFFFFFF
2. After all the 64 requests complete, and no more requests come:
map->word = 0xFFFFFFFFFFFFFFFF, map->cleared = 0xFFFFFFFFFFFFFFFF
3. Now two tasks try to allocate requests:
T1: T2:
__blk_mq_get_tag .
__sbitmap_queue_get .
sbitmap_get .
sbitmap_find_bit .
sbitmap_find_bit_in_word .
__sbitmap_get_word -> nr=-1 __blk_mq_get_tag
sbitmap_deferred_clear __sbitmap_queue_get
/* map->cleared=0xFFFFFFFFFFFFFFFF */ sbitmap_find_bit
if (!READ_ONCE(map->cleared)) sbitmap_find_bit_in_word
return false; __sbitmap_get_word -> nr=-1
mask = xchg(&map->cleared, 0) sbitmap_deferred_clear
atomic_long_andnot() /* map->cleared=0 */
if (!(map->cleared))
return false;
/*
* map->cleared is cleared by T1
* T2 fail to acquire the tag
*/
4. T2 is the sole tag waiter. When T1 puts the tag, T2 cannot be woken
up due to the wake_batch being set at 6. If no more requests come, T1
will wait here indefinitely.
This patch achieves two purposes:
1. Check on ->cleared and update on both ->cleared and ->word need to
be done atomically, and using spinlock could be the simplest solution.
2. Add extra check in sbitmap_deferred_clear(), to identify whether
->word has free bits.
Fixes:
|
||
|
Linus Torvalds
|
76d9b92e68 |
slab updates for 6.11
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Merge tag 'slab-for-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab updates from Vlastimil Babka:
"The most prominent change this time is the kmem_buckets based
hardening of kmalloc() allocations from Kees Cook.
We have also extended the kmalloc() alignment guarantees for
non-power-of-two sizes in a way that benefits rust.
The rest are various cleanups and non-critical fixups.
- Dedicated bucket allocator (Kees Cook)
This series [1] enhances the probabilistic defense against heap
spraying/grooming of CONFIG_RANDOM_KMALLOC_CACHES from last year.
kmalloc() users that are known to be useful for exploits can get
completely separate set of kmalloc caches that can't be shared with
other users. The first converted users are alloc_msg() and
memdup_user().
The hardening is enabled by CONFIG_SLAB_BUCKETS.
- Extended kmalloc() alignment guarantees (Vlastimil Babka)
For years now we have guaranteed natural alignment for power-of-two
allocations, but nothing was defined for other sizes (in practice,
we have two such buckets, kmalloc-96 and kmalloc-192).
To avoid unnecessary padding in the rust layer due to its alignment
rules, extend the guarantee so that the alignment is at least the
largest power-of-two divisor of the requested size.
This fits what rust needs, is a superset of the existing
power-of-two guarantee, and does not in practice change the layout
(and thus does not add overhead due to padding) of the kmalloc-96
and kmalloc-192 caches, unless slab debugging is enabled for them.
- Cleanups and non-critical fixups (Chengming Zhou, Suren
Baghdasaryan, Matthew Willcox, Alex Shi, and Vlastimil Babka)
Various tweaks related to the new alloc profiling code, folio
conversion, debugging and more leftovers after SLAB"
Link: https://lore.kernel.org/all/20240701190152.it.631-kees@kernel.org/ [1]
* tag 'slab-for-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
mm/memcg: alignment memcg_data define condition
mm, slab: move prepare_slab_obj_exts_hook under CONFIG_MEM_ALLOC_PROFILING
mm, slab: move allocation tagging code in the alloc path into a hook
mm/util: Use dedicated slab buckets for memdup_user()
ipc, msg: Use dedicated slab buckets for alloc_msg()
mm/slab: Introduce kmem_buckets_create() and family
mm/slab: Introduce kvmalloc_buckets_node() that can take kmem_buckets argument
mm/slab: Plumb kmem_buckets into __do_kmalloc_node()
mm/slab: Introduce kmem_buckets typedef
slab, rust: extend kmalloc() alignment guarantees to remove Rust padding
slab: delete useless RED_INACTIVE and RED_ACTIVE
slab: don't put freepointer outside of object if only orig_size
slab: make check_object() more consistent
mm: Reduce the number of slab->folio casts
mm, slab: don't wrap internal functions with alloc_hooks()
|
||
|
Linus Torvalds
|
db2451e78d |
Bootconfig updates for v6.11:
- Remove duplicate included header file linux/bootconfig.h from lib/bootconfig.c. This is a cleanup, no behavior change. -----BEGIN PGP SIGNATURE----- iQFPBAABCgA5FiEEh7BulGwFlgAOi5DV2/sHvwUrPxsFAmaWhj4bHG1hc2FtaS5o aXJhbWF0c3VAZ21haWwuY29tAAoJENv7B78FKz8bdd0H/iraZ7ZOFWxCapOZI4dL 7f870j0PQG/KU7lB4jAo+3u7YyQWQTTLdhDPEOci4axsDG+56C/SVpHV0Z26SGHX ZqcKlA/H0HT4BA3zG1leRzXC/qPYiAEdIw38NngYPYBUWhqM3qmYlrRIBeg89VrM B4yaIJA/Uae7KAlB2dcmhmrIg86QK1iPKU6G+U5mIFecxDQmowE7z5f5pI/K/M5j 2HT2Kg1XPTtxOb15mKtA19TXbbA1IqYUvwW5jOffppKMwtiggEaOj4mLQ1MhlrP0 pEb1OJMx21MvEJYtjOXi8qsSGOhdWH8sBpxdUv21GzwRvOuG/AoaN1YKMIZCQp1K Jjo= =Bjzb -----END PGP SIGNATURE----- Merge tag 'bootconfig-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull bootconfig update from Masami Hiramatsu: - Remove duplicate included header file linux/bootconfig.h from lib/bootconfig.c. This is a cleanup, no behavior change. * tag 'bootconfig-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: bootconfig: Remove duplicate included header file linux/bootconfig.h |
||
|
Linus Torvalds
|
b3ce7a3084 |
drm next for 6.11-rc1:
core:
- deprecate DRM data and return 0 date
- connector: Create a set of helpers to help with HDMI support
- Remove driver owner assignments
- Allow more drivers to compile with COMPILE_TEST
- Conversions to drm_edid
- Sprinkle MODULE_DESCRIPTIONS everywhere they are missing
- Remove drm_mm_replace_node
- print: Add a drm prefix to warn level messages too, remove
___drm_dbg, consolidate prefix handling
- New monochrome TV mode variant
ttm:
- improve number of page faults on some platforms
- fix test builds under PREEMPT_RT
- more test coverage
ci:
- Require a more recent version of mesa,
- improve farm setup and test generation
dma-buf:
- warn if reserving 0 fence slots
- internal API heap enhancements
fbdev:
- Create memory manager optimized fbdev emulation
panic:
- Allow to select fonts,
- improve drm_fb_dma_get_scanout_buffer
- Allow to dump kmsg to the screen
bridge:
- Remove redundant checks on bridge->encoder
- Remove drm_bridge_chain_mode_fixup
- bridge-connector: Plumb in the new HDMI helper
- analogix_dp: Various improvements, handle AUX transfers timeout
- samsung-dsim: Fix timings calculation
- tc358767: Plenty of small fixes, fix no connector attach, fix clocks
- sii902x: state validation improvements
panels:
- Switch panels from register table initialization to proper code
- Now that the panel code tracks the panel state, remove every
ad-hoc implementation in the panel drivers
- More cleanup of prepare / enable state tracking in drivers
- edp: Drop legacy panel compatibles
- simple-bridge: Switch to devm_drm_bridge_add
- New panels: Lincoln Tech Sol LCD185-101CT, Microtips Technology
13-101HIEBCAF0-C, Microtips Technology MF-103HIEB0GA0, BOE
nv110wum-l60, IVO t109nw41, WL-355608-A8, PrimeView PM070WL4,
Lincoln Technologies LCD197, Ortustech COM35H3P70ULC,
AUO G104STN01, K&d kd101ne3-40ti
amdgpu:
- DCN 4.0.x support
- GC 12.0 support
- GMC 12.0 support
- SDMA 7.0 support
- MES12 support
- MMHUB 4.1 support
- GFX12 modifier and DCC support
- lots of IP fixes/updates
amdkfd:
- Contiguous VRAM allocations
- GC 12.0 support
- SDMA 7.0 support
- SR-IOV fixes
- KFD GFX ALU exceptions
i915:
- Battlemage Xe2 HPD display enablement
- Panel Replay enabling
- DP AUX-less ALPM/LOBF
- Enable link training failure fallback for DP MST links
- CMRR (Content Match Refresh Rate) enabling
- Increase ADL-S/ADL-P/DG2+ max TMDS bitrate to 6 Gbps
- Enable eDP AUX based HDR backlight
- Support replaying GPU hangs with captured context image
- Automate CCS Mode setting during engine resets
- lots of refactoring
- Support replaying GPU hangs with captured context image
- Increase FLR timeout from 3s to 9s
- Enable w/a 16021333562 for DG2, MTL and ARL [guc]
xe:
- update MAINATINERS
- New uapi adding OA functionality to Xe
- expose l3 bank mask
- fix display detect on ADL-N
- runtime PM Fixes
- Fix silent backmerge issues
- More prep for SR-IOV
- HWmon additions
- per client usage info
- Rework GPU page fault handling
- Drop EXEC_QUEUE_FLAG_BANNED
- Add BMG PCI IDs
- Scheduler fixes and improvements
- Rename xe_exec_queue::compute to xe_exec_queue::lr
- Use ttm_uncached for BO with NEEDS_UC flag
- Rename xe perf layer as xe observation layer
- lots of refactoring
radeon:
- Backlight workaround for iMac
- Silence UBSAN flex array warnings
msm:
- Validate registers XML description against schema in CI
- core/dpu: SM7150 support
- mdp5: Add support for MSM8937
- gpu: Add param for userspace to know if raytracing is supported
- gpu: X185 support (aka gpu in X1 laptop chips)
- gpu: a505 support
ivpu:
- hardware scheduler support
- profiling support
- improvements to the platform support layer
- firmware handling improvements
- clocks/power mgmt improvements
- scheduler/logging improvements
habanalabs:
- Gradual sleep in polling memory macro.
- Reduce Gaudi2 MSI-X interrupt count to 128.
- Add Gaudi2-D revision support.
- Add timestamp to CPLD info.
- Gaudi2: Assume hard-reset by firmware upon MC SEI severe error.
- Align Gaudi2 interrupt names.
- Check for errors after preboot is ready.
- Change habanalabs maintainer and git repo path.
mgag200:
- refactoring and improvements
- Add BMC output
- enable polling
nouveau:
- add registry command line
v3d:
- perf counters improvements
zynqmp:
- irq and debugfs improvements
atmel-hlcdc:
- Support XLCDC in sam9x7
mipi-dbi:
- Remove mipi_dbi_machine_little_endian
- make SPI bits per word configurable
- support RGB888
- allow pixel formats to be specified in the DT
sun4i:
- Rework the blender setup for DE2
panfrost:
- Enable MT8188 support
vc4:
- Monochrome TV support
exynos:
- fix fallback mode regression
- fix memory leak
- Use drm_edid_duplicate() instead of kmemdup()
etnaviv:
- fix i.MX8MP NPU clock gating
- workaround FE register cdc issues on some cores
- fix DMA sync handling for cached buffers
- fix job timeout handling
- keep TS enabled on MMUv2 cores for improved performance
mediatek:
- Convert to platform remove callback returning void-
- Drop chain_mode_fixup call in mode_valid()
- Fixes the errors of MediaTek display driver found by IGT.
- Add display support for the MT8365-EVK board
- Fix bit depth overwritten for mtk_ovl_set bit_depth()
- Fix possible_crtcs calculation
- Fix spurious kfree()
ast:
- refactor mode setting code
stm:
- Add LVDS support
- DSI PHY updates
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Merge tag 'drm-next-2024-07-18' of https://gitlab.freedesktop.org/drm/kernel
Pull drm updates from Dave Airlie:
"There's a lot of stuff in here, amd, i915 and xe have new platform
work, lots of core rework around EDID handling, some new COMPILE_TEST
options, maintainer changes and a lots of other stuff. Summary:
core:
- deprecate DRM data and return 0 date
- connector: Create a set of helpers to help with HDMI support
- Remove driver owner assignments
- Allow more drivers to compile with COMPILE_TEST
- Conversions to drm_edid
- Sprinkle MODULE_DESCRIPTIONS everywhere they are missing
- Remove drm_mm_replace_node
- print: Add a drm prefix to warn level messages too, remove
___drm_dbg, consolidate prefix handling
- New monochrome TV mode variant
ttm:
- improve number of page faults on some platforms
- fix test builds under PREEMPT_RT
- more test coverage
ci:
- Require a more recent version of mesa
- improve farm setup and test generation
dma-buf:
- warn if reserving 0 fence slots
- internal API heap enhancements
fbdev:
- Create memory manager optimized fbdev emulation
panic:
- Allow to select fonts
- improve drm_fb_dma_get_scanout_buffer
- Allow to dump kmsg to the screen
bridge:
- Remove redundant checks on bridge->encoder
- Remove drm_bridge_chain_mode_fixup
- bridge-connector: Plumb in the new HDMI helper
- analogix_dp: Various improvements, handle AUX transfers timeout
- samsung-dsim: Fix timings calculation
- tc358767: Plenty of small fixes, fix no connector attach, fix
clocks
- sii902x: state validation improvements
panels:
- Switch panels from register table initialization to proper code
- Now that the panel code tracks the panel state, remove every ad-hoc
implementation in the panel drivers
- More cleanup of prepare / enable state tracking in drivers
- edp: Drop legacy panel compatibles
- simple-bridge: Switch to devm_drm_bridge_add
- New panels: Lincoln Tech Sol LCD185-101CT, Microtips Technology
13-101HIEBCAF0-C, Microtips Technology MF-103HIEB0GA0,
BOE nv110wum-l60, IVO t109nw41, WL-355608-A8, PrimeView
PM070WL4, Lincoln Technologies LCD197, Ortustech
COM35H3P70ULC, AUO G104STN01, K&d kd101ne3-40ti
amdgpu:
- DCN 4.0.x support
- GC 12.0 support
- GMC 12.0 support
- SDMA 7.0 support
- MES12 support
- MMHUB 4.1 support
- GFX12 modifier and DCC support
- lots of IP fixes/updates
amdkfd:
- Contiguous VRAM allocations
- GC 12.0 support
- SDMA 7.0 support
- SR-IOV fixes
- KFD GFX ALU exceptions
i915:
- Battlemage Xe2 HPD display enablement
- Panel Replay enabling
- DP AUX-less ALPM/LOBF
- Enable link training failure fallback for DP MST links
- CMRR (Content Match Refresh Rate) enabling
- Increase ADL-S/ADL-P/DG2+ max TMDS bitrate to 6 Gbps
- Enable eDP AUX based HDR backlight
- Support replaying GPU hangs with captured context image
- Automate CCS Mode setting during engine resets
- lots of refactoring
- Support replaying GPU hangs with captured context image
- Increase FLR timeout from 3s to 9s
- Enable w/a 16021333562 for DG2, MTL and ARL [guc]
xe:
- update MAINATINERS
- New uapi adding OA functionality to Xe
- expose l3 bank mask
- fix display detect on ADL-N
- runtime PM Fixes
- Fix silent backmerge issues
- More prep for SR-IOV
- HWmon additions
- per client usage info
- Rework GPU page fault handling
- Drop EXEC_QUEUE_FLAG_BANNED
- Add BMG PCI IDs
- Scheduler fixes and improvements
- Rename xe_exec_queue::compute to xe_exec_queue::lr
- Use ttm_uncached for BO with NEEDS_UC flag
- Rename xe perf layer as xe observation layer
- lots of refactoring
radeon:
- Backlight workaround for iMac
- Silence UBSAN flex array warnings
msm:
- Validate registers XML description against schema in CI
- core/dpu: SM7150 support
- mdp5: Add support for MSM8937
- gpu: Add param for userspace to know if raytracing is supported
- gpu: X185 support (aka gpu in X1 laptop chips)
- gpu: a505 support
ivpu:
- hardware scheduler support
- profiling support
- improvements to the platform support layer
- firmware handling improvements
- clocks/power mgmt improvements
- scheduler/logging improvements
habanalabs:
- Gradual sleep in polling memory macro
- Reduce Gaudi2 MSI-X interrupt count to 128
- Add Gaudi2-D revision support
- Add timestamp to CPLD info
- Gaudi2: Assume hard-reset by firmware upon MC SEI severe error
- Align Gaudi2 interrupt names
- Check for errors after preboot is ready
- Change habanalabs maintainer and git repo path
mgag200:
- refactoring and improvements
- Add BMC output
- enable polling
nouveau:
- add registry command line
v3d:
- perf counters improvements
zynqmp:
- irq and debugfs improvements
atmel-hlcdc:
- Support XLCDC in sam9x7
mipi-dbi:
- Remove mipi_dbi_machine_little_endian
- make SPI bits per word configurable
- support RGB888
- allow pixel formats to be specified in the DT
sun4i:
- Rework the blender setup for DE2
panfrost:
- Enable MT8188 support
vc4:
- Monochrome TV support
exynos:
- fix fallback mode regression
- fix memory leak
- Use drm_edid_duplicate() instead of kmemdup()
etnaviv:
- fix i.MX8MP NPU clock gating
- workaround FE register cdc issues on some cores
- fix DMA sync handling for cached buffers
- fix job timeout handling
- keep TS enabled on MMUv2 cores for improved performance
mediatek:
- Convert to platform remove callback returning void-
- Drop chain_mode_fixup call in mode_valid()
- Fixes the errors of MediaTek display driver found by IGT
- Add display support for the MT8365-EVK board
- Fix bit depth overwritten for mtk_ovl_set bit_depth()
- Fix possible_crtcs calculation
- Fix spurious kfree()
ast:
- refactor mode setting code
stm:
- Add LVDS support
- DSI PHY updates"
* tag 'drm-next-2024-07-18' of https://gitlab.freedesktop.org/drm/kernel: (2501 commits)
drm/amdgpu/mes12: add missing opcode string
drm/amdgpu/mes11: update opcode strings
Revert "drm/amd/display: Reset freesync config before update new state"
drm/omap: Restrict compile testing to PAGE_SIZE less than 64KB
drm/xe: Drop trace_xe_hw_fence_free
drm/xe/uapi: Rename xe perf layer as xe observation layer
drm/amdgpu: remove exp hw support check for gfx12
drm/amdgpu: timely save bad pages to eeprom after gpu ras reset is completed
drm/amdgpu: flush all cached ras bad pages to eeprom
drm/amdgpu: select compute ME engines dynamically
drm/amd/display: Allow display DCC for DCN401
drm/amdgpu: select compute ME engines dynamically
drm/amdgpu/job: Replace DRM_INFO/ERROR logging
drm/amdgpu: select compute ME engines dynamically
drm/amd/pm: Ignore initial value in smu response register
drm/amdgpu: Initialize VF partition mode
drm/amd/amdgpu: fix SDMA IRQ client ID <-> req mapping
MAINTAINERS: fix Xinhui's name
MAINTAINERS: update powerplay and swsmu
drm/qxl: Pin buffer objects for internal mappings
...
|
||
|
Linus Torvalds
|
51835949dd |
Networking changes for 6.11. Not much excitement - a handful of large
patchsets (devmem among them) did not make it in time.
Core & protocols
----------------
- Use local_lock in addition to local_bh_disable() to protect per-CPU
resources in networking, a step closer for local_bh_disable() not
to act as a big lock on PREEMPT_RT.
- Use flex array for netdevice priv area, ensure its cache alignment.
- Add a sysctl knob to allow user to specify a default rto_min at socket
init time. Bit of a big hammer but multiple companies were
independently carrying such patch downstream so clearly it's useful.
- Support scheduling transmission of packets based on CLOCK_TAI.
- Un-pin TCP TIMEWAIT timer to avoid it firing on CPUs later cordoned off
using cpusets.
- Support multiple L2TPv3 UDP tunnels using the same 5-tuple address.
- Allow configuration of multipath hash seed, to both allow synchronizing
hashing of two routers, and preventing partial accidental sync.
- Improve TCP compliance with RFC 9293 for simultaneous connect().
- Support sending NAT keepalives in IPsec ESP in UDP states. Userspace
IKE daemon had to do this before, but the kernel can better keep
track of it.
- Support sending supervision HSR frames with MAC addresses stored in
ProxyNodeTable when RedBox (i.e. HSR-SAN) is enabled.
- Introduce IPPROTO_SMC for selecting SMC when socket is created.
- Allow UDP GSO transmit from devices with no checksum offload.
- openvswitch: add packet sampling via psample, separating the sampled
traffic from "upcall" packets sent to user space for forwarding.
- nf_tables: shrink memory consumption for transaction objects.
Things we sprinkled into general kernel code
--------------------------------------------
- Power Sequencing subsystem (used by Qualcomm Bluetooth driver
for QCA6390).
- Add IRQ information in sysfs for auxiliary bus.
- Introduce guard definition for local_lock.
- Add aligned flavor of __cacheline_group_{begin, end}() markings for
grouping fields in structures.
BPF
---
- Notify user space (via epoll) when a struct_ops object is getting
detached/unregistered.
- Add new kfuncs for a generic, open-coded bits iterator.
- Enable BPF programs to declare arrays of kptr, bpf_rb_root, and
bpf_list_head.
- Support resilient split BTF which cuts down on duplication and makes
BTF as compact as possible WRT BTF from modules.
- Add support for dumping kfunc prototypes from BTF which enables both
detecting as well as dumping compilable prototypes for kfuncs.
- riscv64 BPF JIT improvements in particular to add 12-argument support
for BPF trampolines and to utilize bpf_prog_pack for the latter.
- Add the capability to offload the netfilter flowtable in XDP layer
through kfuncs.
Driver API
----------
- Allow users to configure IRQ tresholds between which automatic IRQ
moderation can choose.
- Expand Power Sourcing (PoE) status with power, class and failure
reason. Support setting power limits.
- Track additional RSS contexts in the core, make sure configuration
changes don't break them.
- Support IPsec crypto offload for IPv6 ESP and IPv4 UDP-encapsulated ESP
data paths.
- Support updating firmware on SFP modules.
Tests and tooling
-----------------
- mptcp: use net/lib.sh to manage netns.
- TCP-AO and TCP-MD5: replace debug prints used by tests with
tracepoints.
- openvswitch: make test self-contained (don't depend on OvS CLI tools).
Drivers
-------
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- increase the max total outstanding PTP TX packets to 4
- add timestamping statistics support
- implement netdev_queue_mgmt_ops
- support new RSS context API
- Intel (100G, ice, idpf):
- implement FEC statistics and dumping signal quality indicators
- support E825C products (with 56Gbps PHYs)
- nVidia/Mellanox:
- support HW-GRO
- mlx4/mlx5: support per-queue statistics via netlink
- obey the max number of EQs setting in sub-functions
- AMD/Solarflare:
- support new RSS context API
- AMD/Pensando:
- ionic: rework fix for doorbell miss to lower overhead
and skip it on new HW
- Wangxun:
- txgbe: support Flow Director perfect filters
- Ethernet NICs consumer, embedded and virtual:
- Add driver for Tehuti Networks TN40xx chips
- Add driver for Meta's internal NIC chips
- Add driver for Ethernet MAC on Airoha EN7581 SoCs
- Add driver for Renesas Ethernet-TSN devices
- Google cloud vNIC:
- flow steering support
- Microsoft vNIC:
- support page sizes other than 4KB on ARM64
- vmware vNIC:
- support latency measurement (update to version 9)
- VirtIO net:
- support for Byte Queue Limits
- support configuring thresholds for automatic IRQ moderation
- support for AF_XDP Rx zero-copy
- Synopsys (stmmac):
- support for STM32MP13 SoC
- let platforms select the right PCS implementation
- TI:
- icssg-prueth: add multicast filtering support
- icssg-prueth: enable PTP timestamping and PPS
- Renesas:
- ravb: improve Rx performance 30-400% by using page pool,
theaded NAPI and timer-based IRQ coalescing
- ravb: add MII support for R-Car V4M
- Cadence (macb):
- macb: add ARP support to Wake-On-LAN
- Cortina:
- use phylib for RX and TX pause configuration
- Ethernet switches:
- nVidia/Mellanox:
- support configuration of multipath hash seed
- report more accurate max MTU
- use page_pool to improve Rx performance
- MediaTek:
- mt7530: add support for bridge port isolation
- Qualcomm:
- qca8k: add support for bridge port isolation
- Microchip:
- lan9371/2: add 100BaseTX PHY support
- NXP:
- vsc73xx: implement VLAN operations
- Ethernet PHYs:
- aquantia: enable support for aqr115c
- aquantia: add support for PHY LEDs
- realtek: add support for rtl8224 2.5Gbps PHY
- xpcs: add memory-mapped device support
- add BroadR-Reach link mode and support in Broadcom's PHY driver
- CAN:
- add document for ISO 15765-2 protocol support
- mcp251xfd: workaround for erratum DS80000789E, use timestamps
to catch when device returns incorrect FIFO status
- WiFi:
- mac80211/cfg80211:
- parse Transmit Power Envelope (TPE) data in mac80211 instead of
in drivers
- improvements for 6 GHz regulatory flexibility
- multi-link improvements
- support multiple radios per wiphy
- remove DEAUTH_NEED_MGD_TX_PREP flag
- Intel (iwlwifi):
- bump FW API to 91 for BZ/SC devices
- report 64-bit radiotap timestamp
- enable P2P low latency by default
- handle Transmit Power Envelope (TPE) advertised by AP
- remove support for older FW for new devices
- fast resume (keeping the device configured)
- mvm: re-enable Multi-Link Operation (MLO)
- aggregation (A-MSDU) optimizations
- MediaTek (mt76):
- mt7925 Multi-Link Operation (MLO) support
- Qualcomm (ath10k):
- LED support for various chipsets
- Qualcomm (ath12k):
- remove unsupported Tx monitor handling
- support channel 2 in 6 GHz band
- support Spatial Multiplexing Power Save (SMPS) in 6 GHz band
- supprt multiple BSSID (MBSSID) and Enhanced Multi-BSSID
Advertisements (EMA)
- support dynamic VLAN
- add panic handler for resetting the firmware state
- DebugFS support for datapath statistics
- WCN7850: support for Wake on WLAN
- Microchip (wilc1000):
- read MAC address during probe to make it visible to user space
- suspend/resume improvements
- TI (wl18xx):
- support newer firmware versions
- RealTek (rtw89):
- preparation for RTL8852BE-VT support
- Wake on WLAN support for WiFi 6 chips
- 36-bit PCI DMA support
- RealTek (rtlwifi):
- RTL8192DU support
- Broadcom (brcmfmac):
- Management Frame Protection support (to enable WPA3)
- Bluetooth:
- qualcomm: use the power sequencer for QCA6390
- btusb: mediatek: add ISO data transmission functions
- hci_bcm4377: add BCM4388 support
- btintel: add support for BlazarU core
- btintel: add support for Whale Peak2
- btnxpuart: add support for AW693 A1 chipset
- btnxpuart: add support for IW615 chipset
- btusb: add Realtek RTL8852BE support ID 0x13d3:0x3591
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Not much excitement - a handful of large patchsets (devmem among them)
did not make it in time.
Core & protocols:
- Use local_lock in addition to local_bh_disable() to protect per-CPU
resources in networking, a step closer for local_bh_disable() not
to act as a big lock on PREEMPT_RT
- Use flex array for netdevice priv area, ensure its cache alignment
- Add a sysctl knob to allow user to specify a default rto_min at
socket init time. Bit of a big hammer but multiple companies were
independently carrying such patch downstream so clearly it's useful
- Support scheduling transmission of packets based on CLOCK_TAI
- Un-pin TCP TIMEWAIT timer to avoid it firing on CPUs later cordoned
off using cpusets
- Support multiple L2TPv3 UDP tunnels using the same 5-tuple address
- Allow configuration of multipath hash seed, to both allow
synchronizing hashing of two routers, and preventing partial
accidental sync
- Improve TCP compliance with RFC 9293 for simultaneous connect()
- Support sending NAT keepalives in IPsec ESP in UDP states.
Userspace IKE daemon had to do this before, but the kernel can
better keep track of it
- Support sending supervision HSR frames with MAC addresses stored in
ProxyNodeTable when RedBox (i.e. HSR-SAN) is enabled
- Introduce IPPROTO_SMC for selecting SMC when socket is created
- Allow UDP GSO transmit from devices with no checksum offload
- openvswitch: add packet sampling via psample, separating the
sampled traffic from "upcall" packets sent to user space for
forwarding
- nf_tables: shrink memory consumption for transaction objects
Things we sprinkled into general kernel code:
- Power Sequencing subsystem (used by Qualcomm Bluetooth driver for
QCA6390) [ Already merged separately - Linus ]
- Add IRQ information in sysfs for auxiliary bus
- Introduce guard definition for local_lock
- Add aligned flavor of __cacheline_group_{begin, end}() markings for
grouping fields in structures
BPF:
- Notify user space (via epoll) when a struct_ops object is getting
detached/unregistered
- Add new kfuncs for a generic, open-coded bits iterator
- Enable BPF programs to declare arrays of kptr, bpf_rb_root, and
bpf_list_head
- Support resilient split BTF which cuts down on duplication and
makes BTF as compact as possible WRT BTF from modules
- Add support for dumping kfunc prototypes from BTF which enables
both detecting as well as dumping compilable prototypes for kfuncs
- riscv64 BPF JIT improvements in particular to add 12-argument
support for BPF trampolines and to utilize bpf_prog_pack for the
latter
- Add the capability to offload the netfilter flowtable in XDP layer
through kfuncs
Driver API:
- Allow users to configure IRQ tresholds between which automatic IRQ
moderation can choose
- Expand Power Sourcing (PoE) status with power, class and failure
reason. Support setting power limits
- Track additional RSS contexts in the core, make sure configuration
changes don't break them
- Support IPsec crypto offload for IPv6 ESP and IPv4 UDP-encapsulated
ESP data paths
- Support updating firmware on SFP modules
Tests and tooling:
- mptcp: use net/lib.sh to manage netns
- TCP-AO and TCP-MD5: replace debug prints used by tests with
tracepoints
- openvswitch: make test self-contained (don't depend on OvS CLI
tools)
Drivers:
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- increase the max total outstanding PTP TX packets to 4
- add timestamping statistics support
- implement netdev_queue_mgmt_ops
- support new RSS context API
- Intel (100G, ice, idpf):
- implement FEC statistics and dumping signal quality indicators
- support E825C products (with 56Gbps PHYs)
- nVidia/Mellanox:
- support HW-GRO
- mlx4/mlx5: support per-queue statistics via netlink
- obey the max number of EQs setting in sub-functions
- AMD/Solarflare:
- support new RSS context API
- AMD/Pensando:
- ionic: rework fix for doorbell miss to lower overhead and
skip it on new HW
- Wangxun:
- txgbe: support Flow Director perfect filters
- Ethernet NICs consumer, embedded and virtual:
- Add driver for Tehuti Networks TN40xx chips
- Add driver for Meta's internal NIC chips
- Add driver for Ethernet MAC on Airoha EN7581 SoCs
- Add driver for Renesas Ethernet-TSN devices
- Google cloud vNIC:
- flow steering support
- Microsoft vNIC:
- support page sizes other than 4KB on ARM64
- vmware vNIC:
- support latency measurement (update to version 9)
- VirtIO net:
- support for Byte Queue Limits
- support configuring thresholds for automatic IRQ moderation
- support for AF_XDP Rx zero-copy
- Synopsys (stmmac):
- support for STM32MP13 SoC
- let platforms select the right PCS implementation
- TI:
- icssg-prueth: add multicast filtering support
- icssg-prueth: enable PTP timestamping and PPS
- Renesas:
- ravb: improve Rx performance 30-400% by using page pool,
theaded NAPI and timer-based IRQ coalescing
- ravb: add MII support for R-Car V4M
- Cadence (macb):
- macb: add ARP support to Wake-On-LAN
- Cortina:
- use phylib for RX and TX pause configuration
- Ethernet switches:
- nVidia/Mellanox:
- support configuration of multipath hash seed
- report more accurate max MTU
- use page_pool to improve Rx performance
- MediaTek:
- mt7530: add support for bridge port isolation
- Qualcomm:
- qca8k: add support for bridge port isolation
- Microchip:
- lan9371/2: add 100BaseTX PHY support
- NXP:
- vsc73xx: implement VLAN operations
- Ethernet PHYs:
- aquantia: enable support for aqr115c
- aquantia: add support for PHY LEDs
- realtek: add support for rtl8224 2.5Gbps PHY
- xpcs: add memory-mapped device support
- add BroadR-Reach link mode and support in Broadcom's PHY driver
- CAN:
- add document for ISO 15765-2 protocol support
- mcp251xfd: workaround for erratum DS80000789E, use timestamps to
catch when device returns incorrect FIFO status
- WiFi:
- mac80211/cfg80211:
- parse Transmit Power Envelope (TPE) data in mac80211 instead
of in drivers
- improvements for 6 GHz regulatory flexibility
- multi-link improvements
- support multiple radios per wiphy
- remove DEAUTH_NEED_MGD_TX_PREP flag
- Intel (iwlwifi):
- bump FW API to 91 for BZ/SC devices
- report 64-bit radiotap timestamp
- enable P2P low latency by default
- handle Transmit Power Envelope (TPE) advertised by AP
- remove support for older FW for new devices
- fast resume (keeping the device configured)
- mvm: re-enable Multi-Link Operation (MLO)
- aggregation (A-MSDU) optimizations
- MediaTek (mt76):
- mt7925 Multi-Link Operation (MLO) support
- Qualcomm (ath10k):
- LED support for various chipsets
- Qualcomm (ath12k):
- remove unsupported Tx monitor handling
- support channel 2 in 6 GHz band
- support Spatial Multiplexing Power Save (SMPS) in 6 GHz band
- supprt multiple BSSID (MBSSID) and Enhanced Multi-BSSID
Advertisements (EMA)
- support dynamic VLAN
- add panic handler for resetting the firmware state
- DebugFS support for datapath statistics
- WCN7850: support for Wake on WLAN
- Microchip (wilc1000):
- read MAC address during probe to make it visible to user space
- suspend/resume improvements
- TI (wl18xx):
- support newer firmware versions
- RealTek (rtw89):
- preparation for RTL8852BE-VT support
- Wake on WLAN support for WiFi 6 chips
- 36-bit PCI DMA support
- RealTek (rtlwifi):
- RTL8192DU support
- Broadcom (brcmfmac):
- Management Frame Protection support (to enable WPA3)
- Bluetooth:
- qualcomm: use the power sequencer for QCA6390
- btusb: mediatek: add ISO data transmission functions
- hci_bcm4377: add BCM4388 support
- btintel: add support for BlazarU core
- btintel: add support for Whale Peak2
- btnxpuart: add support for AW693 A1 chipset
- btnxpuart: add support for IW615 chipset
- btusb: add Realtek RTL8852BE support ID 0x13d3:0x3591"
* tag 'net-next-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1589 commits)
eth: fbnic: Fix spelling mistake "tiggerring" -> "triggering"
tcp: Replace strncpy() with strscpy()
wifi: ath12k: fix build vs old compiler
tcp: Don't access uninit tcp_rsk(req)->ao_keyid in tcp_create_openreq_child().
eth: fbnic: Write the TCAM tables used for RSS control and Rx to host
eth: fbnic: Add L2 address programming
eth: fbnic: Add basic Rx handling
eth: fbnic: Add basic Tx handling
eth: fbnic: Add link detection
eth: fbnic: Add initial messaging to notify FW of our presence
eth: fbnic: Implement Rx queue alloc/start/stop/free
eth: fbnic: Implement Tx queue alloc/start/stop/free
eth: fbnic: Allocate a netdevice and napi vectors with queues
eth: fbnic: Add FW communication mechanism
eth: fbnic: Add message parsing for FW messages
eth: fbnic: Add register init to set PCIe/Ethernet device config
eth: fbnic: Allocate core device specific structures and devlink interface
eth: fbnic: Add scaffolding for Meta's NIC driver
PCI: Add Meta Platforms vendor ID
net/sched: cls_flower: propagate tca[TCA_OPTIONS] to NL_REQ_ATTR_CHECK
...
|
||
|
Linus Torvalds
|
f8d22a3195 |
linux_kselftest-kunit-6.11-rc1
This KUnit next update for Linux 6.11-rc1 consists of:
-- adds vm_mmap() allocation resource manager
-- converts usercopy kselftest to KUnit
-- disables usercopy testing on !CONFIG_MMU
-- adds MODULE_DESCRIPTION() to core, list, and usercopy tests
-- adds tests for assertion formatting functions - assert.c
-- introduces KUNIT_ASSERT_MEMEQ and KUNIT_ASSERT_MEMNEQ macros
-- fixes KUNIT_ASSERT_STRNEQ comments to make it clear that it is
an assertion
-- renames KUNIT_ASSERT_FAILURE to KUNIT_FAIL_AND_ABORT
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Merge tag 'linux_kselftest-kunit-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull KUnit updates from Shuah Khan:
- add vm_mmap() allocation resource manager
- convert usercopy kselftest to KUnit
- disable usercopy testing on !CONFIG_MMU
- add MODULE_DESCRIPTION() to core, list, and usercopy tests
- add tests for assertion formatting functions - assert.c
- introduce KUNIT_ASSERT_MEMEQ and KUNIT_ASSERT_MEMNEQ macros
- fix KUNIT_ASSERT_STRNEQ comments to make it clear that it is an
assertion
- rename KUNIT_ASSERT_FAILURE to KUNIT_FAIL_AND_ABORT
* tag 'linux_kselftest-kunit-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: Introduce KUNIT_ASSERT_MEMEQ and KUNIT_ASSERT_MEMNEQ macros
kunit: Rename KUNIT_ASSERT_FAILURE to KUNIT_FAIL_AND_ABORT for readability
kunit: Fix the comment of KUNIT_ASSERT_STRNEQ as assertion
kunit: executor: Simplify string allocation handling
kunit/usercopy: Add missing MODULE_DESCRIPTION()
kunit/usercopy: Disable testing on !CONFIG_MMU
usercopy: Convert test_user_copy to KUnit test
kunit: test: Add vm_mmap() allocation resource manager
list: test: add the missing MODULE_DESCRIPTION() macro
kunit: add missing MODULE_DESCRIPTION() macros to core modules
list: test: remove unused struct 'klist_test_struct'
kunit: Cover 'assert.c' with tests
|
||
|
Linus Torvalds
|
f8a8b94d06 |
sysctl changes for 6.11-rc1
Summary
* Remove "->procname == NULL" check when iterating through sysctl table arrays
Removing sentinels in ctl_table arrays reduces the build time size and
runtime memory consumed by ~64 bytes per array. With all ctl_table
sentinels gone, the additional check for ->procname == NULL that worked in
tandem with the ARRAY_SIZE to calculate the size of the ctl_table arrays is
no longer needed and has been removed. The sysctl register functions now
returns an error if a sentinel is used.
* Preparation patches for sysctl constification
Constifying ctl_table structs prevents the modification of proc_handler
function pointers as they would reside in .rodata. The ctl_table arguments
in sysctl utility functions are const qualified in preparation for a future
treewide proc_handler argument constification commit.
* Misc fixes
Increase robustness of set_ownership by providing sane default ownership
values in case the callee doesn't set them. Bound check proc_dou8vec_minmax
to avoid loading buggy modules and give sysctl testing module a name to
avoid compiler complaints.
Testing
* This got push to linux-next in v6.10-rc2, so it has had more than a month
of testing
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Merge tag 'sysctl-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl
Pull sysctl updates from Joel Granados:
- Remove "->procname == NULL" check when iterating through sysctl table
arrays
Removing sentinels in ctl_table arrays reduces the build time size
and runtime memory consumed by ~64 bytes per array. With all
ctl_table sentinels gone, the additional check for ->procname == NULL
that worked in tandem with the ARRAY_SIZE to calculate the size of
the ctl_table arrays is no longer needed and has been removed. The
sysctl register functions now returns an error if a sentinel is used.
- Preparation patches for sysctl constification
Constifying ctl_table structs prevents the modification of
proc_handler function pointers as they would reside in .rodata. The
ctl_table arguments in sysctl utility functions are const qualified
in preparation for a future treewide proc_handler argument
constification commit.
- Misc fixes
Increase robustness of set_ownership by providing sane default
ownership values in case the callee doesn't set them. Bound check
proc_dou8vec_minmax to avoid loading buggy modules and give sysctl
testing module a name to avoid compiler complaints.
* tag 'sysctl-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl:
sysctl: Warn on an empty procname element
sysctl: Remove ctl_table sentinel code comments
sysctl: Remove "child" sysctl code comments
sysctl: Remove superfluous empty allocations from sysctl internals
sysctl: Replace nr_entries with ctl_table_size in new_links
sysctl: Remove check for sentinel element in ctl_table arrays
mm profiling: Remove superfluous sentinel element from ctl_table
locking: Remove superfluous sentinel element from kern_lockdep_table
sysctl: Add module description to sysctl-testing
sysctl: constify ctl_table arguments of utility function
utsname: constify ctl_table arguments of utility function
sysctl: move the extra1/2 boundary check of u8 to sysctl_check_table_array
sysctl: always initialize i_uid/i_gid
|
||
|
Linus Torvalds
|
ce5a51bfac |
hardening updates for v6.11-rc1
- lkdtm/bugs: add test for hung smp_call_function_single() (Mark Rutland) - gcc-plugins: Remove duplicate included header file stringpool.h (Thorsten Blum) - ARM: Remove address checking for MMUless devices (Yanjun Yang) - randomize_kstack: Clean up per-arch entropy and codegen - KCFI: Make FineIBT mode Kconfig selectable - fortify: Do not special-case 0-sized destinations -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmaVT2IACgkQiXL039xt wCbq8A//RhxTdr+l/h2gyMy/Lcy/NMR9KEWklnxdftuM1V1Kzr53yeH/g6Ehw69g e8Ag3Sp7Fn4rNBVa+tY6RqzKwfrUHIbeewGI4LkRe19NDWFWc/Od+4tamfRSPf9c GL9ZnJZviRm3zByetwr4CbS69HocXFFSSgcpIv/7xOd+haSWWdvEc3KcSnavY/aq 8wQPkZxzy8ESkOajZj2k0E2l9JP42Ex20qy0KcjweSSYVafKmbTxhKZgriwAKMCD Yj2m55fbD6D08vd0Y6S7H4TPilYtRbulXR9FNMtw59UpKeoUceEmyn4B43psDvau 9XuJF/oFKrXBEJG+OUZogNu5L6uYUaNdYdtb43upu9lCsjrAjmMYfmXDHO2E40V8 76MikxHtyFAPEzUwg/BH2CGUu9hil+FADd28s8zLuUBpRDitgYudQD+Cqrc34b6s QlAX19bX7KFgXqlsdwy6zJNSd3dpoMBVsP58/EhQQfiqv/ZU2TOryZenz0URlH+k ZCAbpXYRAzTyGz23qkutRO+6MiKXoheE7gmd9jESiaqyXe2Q6mIMPyoFU50458TH xXhXbZc7War8vbJLyWF7fvK/GlooTHu4xOxfNTsxKWiYShI01iiwG1hH+j4ZDVOG NBBK2AfX9GM8AOHJolp5EaGmon0AoVsxbRANSs1K4qZ93WTNGLk= =LoG2 -----END PGP SIGNATURE----- Merge tag 'hardening-v6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening updates from Kees Cook: - lkdtm/bugs: add test for hung smp_call_function_single() (Mark Rutland) - gcc-plugins: Remove duplicate included header file stringpool.h (Thorsten Blum) - ARM: Remove address checking for MMUless devices (Yanjun Yang) - randomize_kstack: Clean up per-arch entropy and codegen - KCFI: Make FineIBT mode Kconfig selectable - fortify: Do not special-case 0-sized destinations * tag 'hardening-v6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: randomize_kstack: Improve stack alignment codegen ARM: Remove address checking for MMUless devices gcc-plugins: Remove duplicate included header file stringpool.h randomize_kstack: Remove non-functional per-arch entropy filtering fortify: Do not special-case 0-sized destinations x86/alternatives: Make FineIBT mode Kconfig selectable lkdtm/bugs: add test for hung smp_call_function_single() |
||
|
Linus Torvalds
|
4fd9435641 |
Updates for timers, timekeeping and related functionality:
- Core:
- Make the takeover of a hrtimer based broadcast timer reliable during
CPU hot-unplug. The current implementation suffers from a race which
can lead to broadcast timer starvation in the worst case.
- VDSO related cleanups and simplifications
- Small cleanups and enhancements all over the place
- PTP:
- Replace the architecture specific base clock to clocksource, e.g. ART
to TSC, conversion function with generic functionality to avoid
exposing such internals to drivers and convert all existing drivers
over. This also allows to provide functionality which converts the
other way round in the core code based on the same parameter set.
- Provide a function to convert CLOCK_REALTIME to the base clock to
support the upcoming PPS output driver on Intel platforms.
- Drivers:
- A set of Device Tree bindings for new hardware
- Cleanups and enhancements all over the place
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Merge tag 'timers-core-2024-07-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"Updates for timers, timekeeping and related functionality:
Core:
- Make the takeover of a hrtimer based broadcast timer reliable
during CPU hot-unplug. The current implementation suffers from a
race which can lead to broadcast timer starvation in the worst
case.
- VDSO related cleanups and simplifications
- Small cleanups and enhancements all over the place
PTP:
- Replace the architecture specific base clock to clocksource, e.g.
ART to TSC, conversion function with generic functionality to avoid
exposing such internals to drivers and convert all existing drivers
over. This also allows to provide functionality which converts the
other way round in the core code based on the same parameter set.
- Provide a function to convert CLOCK_REALTIME to the base clock to
support the upcoming PPS output driver on Intel platforms.
Drivers:
- A set of Device Tree bindings for new hardware
- Cleanups and enhancements all over the place"
* tag 'timers-core-2024-07-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (30 commits)
clocksource/drivers/realtek: Add timer driver for rtl-otto platforms
dt-bindings: timer: Add schema for realtek,otto-timer
dt-bindings: timer: Add SOPHGO SG2002 clint
dt-bindings: timer: renesas,tmu: Add R-Car Gen2 support
dt-bindings: timer: renesas,tmu: Add RZ/G1 support
dt-bindings: timer: renesas,tmu: Add R-Mobile APE6 support
clocksource/drivers/mips-gic-timer: Correct sched_clock width
clocksource/drivers/mips-gic-timer: Refine rating computation
clocksource/drivers/sh_cmt: Address race condition for clock events
clocksource/driver/arm_global_timer: Remove unnecessary ‘0’ values from err
clocksource/drivers/arm_arch_timer: Remove unnecessary ‘0’ values from irq
tick/broadcast: Make takeover of broadcast hrtimer reliable
tick/sched: Combine WARN_ON_ONCE and print_once
x86/vdso: Remove unused include
x86/vgtod: Remove unused typedef gtod_long_t
x86/vdso: Fix function reference in comment
vdso: Add comment about reason for vdso struct ordering
vdso/gettimeofday: Clarify comment about open coded function
timekeeping: Add missing kernel-doc function comments
tick: Remove unnused tick_nohz_get_idle_calls()
...
|
||
|
Linus Torvalds
|
0e4b77d4ea |
A single update for debugobjects to annotate all intentionally racy global
debug variables so that KCSAN ignores them. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmaULP4THHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoT6pEACXmc34OzO3jbOGEmgt5ch0cYSNvlY0 AL0iAV5JakC8AGDWeDNAUhR5r7tuNqjMmiy/XH+uR/4+xCZLZvQp7flyhrm/W7vd rB3slu4xqqHizoQe81ZdH3ffg7Cj/Q/zqcJTv44UYkWLlAKA92S79bsn903UHpnL ENH0IMulpP0b3GedV3GySz476kyAJX4ZJHXfsG71oyWz8gJahXfaDzSMqnMW0bLG z0u51D9Q2R60zYpEsSPfBCKERKZ+Dzbn/YOYF85kytpXkVQd183JY05IkZmDgxyB O973GgxvPGXZMXrUfhd+h7Kr17TiG+OKFpxhxgGCQoJNebFUt4A+QFWwQ7/FE/TN FmjvwTBHllrLpucskivvI6zEETnJB/13XBB/T3k0BMB3cFfUiXdQS0N+xOBVoAhD CLo21kG+xNPbzuKwzKx1+Vb/FH8/aoKp6py5kQlKAtQ6ddfqyvyGN3TZKYQGl3Hk 9o1ZuwlfkpG0a/0GKvyPcUeLUP0IagGe1wrOard+uL2VRlPRTnr4GH7ItTEedmAY JRlCD0A1GQzwVtOy+D54W0G0ueW/tX76QzxuIJj5wwmZQpcV37eTOfIbZXnk4RzS TZJ6gjxSLGbjYMbTiIcTFBU6UXhKjkE30bb5gPdzpXh8QtI1SSqpftZszqTAXWA3 qbMwI0/csYVXsg== =PuR2 -----END PGP SIGNATURE----- Merge tag 'core-debugobjects-2024-07-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull debugobjects update from Thomas Gleixner: "A single update for debugobjects to annotate all intentionally racy global debug variables so that KCSAN ignores them" * tag 'core-debugobjects-2024-07-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: debugobjects: Annotate racy debug variables |
||
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Vlastimil Babka
|
436381eaf2 |
Merge branch 'slab/for-6.11/buckets' into slab/for-next
Merge all the slab patches previously collected on top of v6.10-rc1, over cleanups/fixes that had to be based on rc6. |
||
|
Linus Torvalds
|
882ddcd1bf |
Kbuild fixes for v6.10 (fourth)
- Make scripts/ld-version.sh robust against the latest LLD - Fix warnings in rpm-pkg with device tree support - Fix warnings in fortify tests with KASAN -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAmaUM9kVHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsGHEYQAKvrP1IzwlkANEEj/2qW1iGHlUod im3cFCKyxrlBar71n15fYtclhK0N4GTVAUMHAk0d1GZo8UjuCeUzurHM4o53Hu1P D0pXbkmiA0YgndpJYQpSV0CrLxCOCVAEFRf7AgdolVjpNLuba4z0bXSTQfEwfHKC W1igTL2vGG8citbfHhEGZfB7AIEQBB0LtNkarpsDVD39rG+blZAABBLEtCueSVtw rVX/Yuny9nDET6tlaCNgr2esNfkrHPIxOSsufeLWdhVVIZprPSGERflhkL3yE299 v6R45ANn72iVNKnnmmjxTNeezIpr74w1NSzBJ0jRM1KRqzbsEuFAf0ZNamtoUJ4r m4tSu5l7lDj86APvehoO2o07A3omd8vcgLPt+lZlFsBIjorVIKovsjix6pVUgHlS BTvxbSojbSMUa/NrkbosJkLo/6TzZxYxHKr17nxk+HsXu0i9A9IiHPBK5dTcbtua olp1MKolQG78FYMwl7v4yQithawRG0mNDLJ2J8oTEIATXQtXV0WAaje73qQFIs6I cMBEfeaDAMH4z0/VvKZsdksXFPDrrjoW0/x1tPqcAgOSyacPGbki4asn52rwDHT5 mfAzlnUc8ts56sBasArmMpk0z+PKC4MZeFUXNGJf7bZ3NZqoDRDHpb69Aqs11vSw AJa9Kj07o5YD8N+E =MMw8 -----END PGP SIGNATURE----- Merge tag 'kbuild-fixes-v6.10-4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Make scripts/ld-version.sh robust against the latest LLD - Fix warnings in rpm-pkg with device tree support - Fix warnings in fortify tests with KASAN * tag 'kbuild-fixes-v6.10-4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: fortify: fix warnings in fortify tests with KASAN kbuild: rpm-pkg: avoid the warnings with dtb's listed twice kbuild: Make ld-version.sh more robust against version string changes |
||
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Masahiro Yamada
|
84679f04ce |
fortify: fix warnings in fortify tests with KASAN
When a software KASAN mode is enabled, the fortify tests emit warnings
on some architectures.
For example, for ARCH=arm, the combination of CONFIG_FORTIFY_SOURCE=y
and CONFIG_KASAN=y produces the following warnings:
TEST lib/test_fortify/read_overflow-memchr.log
warning: unsafe memchr() usage lacked '__read_overflow' warning in lib/test_fortify/read_overflow-memchr.c
TEST lib/test_fortify/read_overflow-memchr_inv.log
warning: unsafe memchr_inv() usage lacked '__read_overflow' symbol in lib/test_fortify/read_overflow-memchr_inv.c
TEST lib/test_fortify/read_overflow-memcmp.log
warning: unsafe memcmp() usage lacked '__read_overflow' warning in lib/test_fortify/read_overflow-memcmp.c
TEST lib/test_fortify/read_overflow-memscan.log
warning: unsafe memscan() usage lacked '__read_overflow' symbol in lib/test_fortify/read_overflow-memscan.c
TEST lib/test_fortify/read_overflow2-memcmp.log
warning: unsafe memcmp() usage lacked '__read_overflow2' warning in lib/test_fortify/read_overflow2-memcmp.c
[ more and more similar warnings... ]
Commit
|
||
|
Thomas Gleixner
|
b7625d67eb |
- Remove unnecessary local variables initialization as they will be
initialized in the code path anyway right after on the ARM arch timer and the ARM global timer (Li kunyu) - Fix a race condition in the interrupt leading to a deadlock on the SH CMT driver. Note that this fix was not tested on the platform using this timer but the fix seems reasonable enough to be picked confidently (Niklas Söderlund) - Increase the rating of the gic-timer and use the configured width clocksource register on the MIPS architecture (Jiaxun Yang) - Add the DT bindings for the TMU on the Renesas platforms (Geert Uytterhoeven) - Add the DT bindings for the SOPHGO SG2002 clint on RiscV (Thomas Bonnefille) - Add the rtl-otto timer driver along with the DT bindings for the Realtek platform (Chris Packham) -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEGn3N4YVz0WNVyHskqDIjiipP6E8FAmaRQh0ACgkQqDIjiipP 6E+rfQgAqkAWZ9BjswxV8Fg+Hj+a1cSohKjDczqitQF5rJm25X5VvMwlXVa3XQGm yemh4tKPpll02LOiYCTyqOWzNrkVS9VsoBd5rrYjRX5aSv7UD35EXklLj4P/INwX O9CRGD6aK4Xbw66xxheYHSSh+2iRs2x2mq61+/VdcIBlAwpQo+vx7McRoJZZI+2t NFIXw8RF5dDlmmAaqiB0WnPAtcOK3SDo9fu1LEAX1ZAzvbZriLo7XLnL7ibySWVe BW1n7Ore6PN5Dvz7jMfTsOQsgAlVv6MPfp/s4EDqMfBLVqXNirzXrdhiee/ahnYP vyzQyU5HPCMiIYS45mhJF0OyDd3wyw== =wuYA -----END PGP SIGNATURE----- Merge tag 'timers-v6.11-rc1' of https://git.linaro.org/people/daniel.lezcano/linux into timers/core Pull clocksource/event driver updates from Daniel Lezcano: - Remove unnecessary local variables initialization as they will be initialized in the code path anyway right after on the ARM arch timer and the ARM global timer (Li kunyu) - Fix a race condition in the interrupt leading to a deadlock on the SH CMT driver. Note that this fix was not tested on the platform using this timer but the fix seems reasonable enough to be picked confidently (Niklas Söderlund) - Increase the rating of the gic-timer and use the configured width clocksource register on the MIPS architecture (Jiaxun Yang) - Add the DT bindings for the TMU on the Renesas platforms (Geert Uytterhoeven) - Add the DT bindings for the SOPHGO SG2002 clint on RiscV (Thomas Bonnefille) - Add the rtl-otto timer driver along with the DT bindings for the Realtek platform (Chris Packham) Link: https://lore.kernel.org/all/91cd05de-4c5d-4242-a381-3b8a4fe6a2a2@linaro.org |
||
|
Dan Carpenter
|
fe69b772e3 |
crypto: lib/mpi - delete unnecessary condition
We checked that "nlimbs" is non-zero in the outside if statement so delete the duplicate check here. Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Thorsten Blum
|
e1fb7430fc |
lib/bch.c: use swap() to improve code
Use the swap() macro to simplify the functions solve_linear_system() and gf_poly_gcd() and improve their readability. Remove the local variable tmp. Fixes the following three Coccinelle/coccicheck warnings reported by swap.cocci: WARNING opportunity for swap() WARNING opportunity for swap() WARNING opportunity for swap() Link: https://lkml.kernel.org/r/20240708224023.9312-2-thorsten.blum@toblux.com Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Chen Ni
|
4f5d4a1ba7 |
test_bpf: convert comma to semicolon
Replace commas between expression statements with semicolons. Link: https://lkml.kernel.org/r/20240709034323.586185-1-nichen@iscas.ac.cn Signed-off-by: Chen Ni <nichen@iscas.ac.cn> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Eduard Zingerman <eddyz87@gmail.com> Cc: Hao Luo <haoluo@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Fastabend <john.fastabend@gmail.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Martin KaFai Lau <martin.lau@linux.dev> Cc: Song Liu <song@kernel.org> Cc: Stanislav Fomichev <sdf@fomichev.me> Cc: Yonghong Song <yonghong.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Kees Cook
|
7554a7b96d |
kunit: executor: Simplify string allocation handling
The alloc/copy code pattern is better consolidated to single kstrdup (and kstrndup) calls instead. This gets rid of deprecated[1] strncpy() uses as well. Replace one other strncpy() use with the more idiomatic strscpy(). Link: https://github.com/KSPP/linux/issues/90 [1] Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Kees Cook <kees@kernel.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Thorsten Blum
|
0d9c0a67b1 |
bootconfig: Remove duplicate included header file linux/bootconfig.h
The header file linux/bootconfig.h is included whether __KERNEL__ is defined or not. Include it only once before the #ifdef/#else/#endif preprocessor directives and remove the following make includecheck warning: linux/bootconfig.h is included more than once Move the comment to the top and delete the now empty #else block. Link: https://lore.kernel.org/all/20240711084315.1507-1-thorsten.blum@toblux.com/ Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> |
||
|
Jakub Kicinski
|
7c8267275d |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: net/sched/act_ct.c |
||
|
Linus Torvalds
|
9d9a2f29ae |
21 hotfixes, 15 of which are cc:stable.
No identifiable theme here - all are singleton patches, 19 are for MM.
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Merge tag 'mm-hotfixes-stable-2024-07-10-13-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"21 hotfixes, 15 of which are cc:stable.
No identifiable theme here - all are singleton patches, 19 are for MM"
* tag 'mm-hotfixes-stable-2024-07-10-13-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (21 commits)
mm/hugetlb: fix kernel NULL pointer dereference when migrating hugetlb folio
mm/hugetlb: fix potential race in __update_and_free_hugetlb_folio()
filemap: replace pte_offset_map() with pte_offset_map_nolock()
arch/xtensa: always_inline get_current() and current_thread_info()
sched.h: always_inline alloc_tag_{save|restore} to fix modpost warnings
MAINTAINERS: mailmap: update Lorenzo Stoakes's email address
mm: fix crashes from deferred split racing folio migration
lib/build_OID_registry: avoid non-destructive substitution for Perl < 5.13.2 compat
mm: gup: stop abusing try_grab_folio
nilfs2: fix kernel bug on rename operation of broken directory
mm/hugetlb_vmemmap: fix race with speculative PFN walkers
cachestat: do not flush stats in recency check
mm/shmem: disable PMD-sized page cache if needed
mm/filemap: skip to create PMD-sized page cache if needed
mm/readahead: limit page cache size in page_cache_ra_order()
mm/filemap: make MAX_PAGECACHE_ORDER acceptable to xarray
mm/damon/core: merge regions aggressively when max_nr_regions is unmet
Fix userfaultfd_api to return EINVAL as expected
mm: vmalloc: check if a hash-index is in cpu_possible_mask
mm: prevent derefencing NULL ptr in pfn_section_valid()
...
|
||
|
Linus Torvalds
|
f6963ab4b0 |
bcachefs fixes for 6.10-rc8
- Switch some asserts to WARN() - Fix a few "transaction not locked" asserts in the data read retry paths and backpointers gc - Fix a race that would cause the journal to get stuck on a flush commit - Add missing fsck checks for the fragmentation LRU - The usual assorted ssorted syzbot fixes -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKnAFLkS8Qha+jvQrE6szbY3KbnYFAmaOuRwACgkQE6szbY3K bnaCHhAAi9VRqws+zx3fSpe2OMwWqAEWA84QgIFJccy+I86d7dXkqG389gFqJwMG 9S3BUHP1WooJmpsTRhK5cNtxZuKKOajXlxUYz3onsF7O/U3dHFY5GU7yIIjXS/0o q7+iryWAJ4MmlOrAJhgPMH/WlhbSVsjANUN0n/NhlOWHccFGHmpdMTb6aYzb+lfL iZOONKmEOR65gLzZYlO323OB2Tv00iEbOZAtxk68BLZYX+WON/j1T1A8gK4G0XSX 8wcYpXNxGGkCufjBfAbXf4mcp/WygQq0Wj3bdVMFkZ+AwSJDcfGeK1H7f6tJ9e4n lqfWL4tgWIckS+41sA96B5cYry9TMDdhu3IeFaAm0ZrF55JT1JySGE1GNA+mo6xA mkMAqhG7rwYh6nSJfWX0Ie+zJ9TFbmi05ZbI7jaTuQjnJ5uvPpTuRfBDi+qSWmoi +IBDAi9hZgCUNEsLRGDm7RDQo0dpbFo6jpArn1RHK4MO/HkTrqcKpTqiGnfwFAU4 PFxwq5G9+d38+M6YMX0tXdfQ+fdxroA6aIBJSsIpF18tPRBOBlQsM2GFP34uHbyk L6HOzed2QpM5ExBmViX79F+obuDQ/gzXQszYvDKL4QTFNbx43gPWRDrGm8EQen6y 12EScamXbUWBSWnOqxscmeUsTdTKxLfw/F43JbE2fE7jSxc5tss= =VGT8 -----END PGP SIGNATURE----- Merge tag 'bcachefs-2024-07-10' of https://evilpiepirate.org/git/bcachefs Pull bcachefs fixes from Kent Overstreet: - Switch some asserts to WARN() - Fix a few "transaction not locked" asserts in the data read retry paths and backpointers gc - Fix a race that would cause the journal to get stuck on a flush commit - Add missing fsck checks for the fragmentation LRU - The usual assorted ssorted syzbot fixes * tag 'bcachefs-2024-07-10' of https://evilpiepirate.org/git/bcachefs: (22 commits) bcachefs: Add missing bch2_trans_begin() bcachefs: Fix missing error check in journal_entry_btree_keys_validate() bcachefs: Warn on attempting a move with no replicas bcachefs: bch2_data_update_to_text() bcachefs: Log mount failure error code bcachefs: Fix undefined behaviour in eytzinger1_first() bcachefs: Mark bch_inode_info as SLAB_ACCOUNT bcachefs: Fix bch2_inode_insert() race path for tmpfiles closures: fix closure_sync + closure debugging bcachefs: Fix journal getting stuck on a flush commit bcachefs: io clock: run timer fns under clock lock bcachefs: Repair fragmentation_lru in alloc_write_key() bcachefs: add check for missing fragmentation in check_alloc_to_lru_ref() bcachefs: bch2_btree_write_buffer_maybe_flush() bcachefs: Add missing printbuf_tabstops_reset() calls bcachefs: Fix loop restart in bch2_btree_transactions_read() bcachefs: Fix bch2_read_retry_nodecode() bcachefs: Don't use the new_fs() bucket alloc path on an initialized fs bcachefs: Fix shift greater than integer size bcachefs: Change bch2_fs_journal_stop() BUG_ON() to warning ... |
||
|
Kent Overstreet
|
29f1c1ae6d |
closures: fix closure_sync + closure debugging
originally, stack closures were only used synchronously, and with the original implementation of closure_sync() the ref never hit 0; thus, closure_put_after_sub() assumes that if the ref hits 0 it's on the debug list, in debug mode. that's no longer true with the current implementation of closure_sync, so we need a new magic so closure_debug_destroy() doesn't pop an assert. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
||
|
Paolo Abeni
|
7b769adc26 |
bpf-next-for-netdev
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZoxN0AAKCRDbK58LschI g0c5AQDa3ZV9gfbN42y1zSDoM1uOgO60fb+ydxyOYh8l3+OiQQD/fLfpTY3gBFSY 9yi/pZhw/QdNzQskHNIBrHFGtJbMxgs= =p1Zz -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2024-07-08 The following pull-request contains BPF updates for your *net-next* tree. We've added 102 non-merge commits during the last 28 day(s) which contain a total of 127 files changed, 4606 insertions(+), 980 deletions(-). The main changes are: 1) Support resilient split BTF which cuts down on duplication and makes BTF as compact as possible wrt BTF from modules, from Alan Maguire & Eduard Zingerman. 2) Add support for dumping kfunc prototypes from BTF which enables both detecting as well as dumping compilable prototypes for kfuncs, from Daniel Xu. 3) Batch of s390x BPF JIT improvements to add support for BPF arena and to implement support for BPF exceptions, from Ilya Leoshkevich. 4) Batch of riscv64 BPF JIT improvements in particular to add 12-argument support for BPF trampolines and to utilize bpf_prog_pack for the latter, from Pu Lehui. 5) Extend BPF test infrastructure to add a CHECKSUM_COMPLETE validation option for skbs and add coverage along with it, from Vadim Fedorenko. 6) Inline bpf_get_current_task/_btf() helpers in the arm64 BPF JIT which gives a small 1% performance improvement in micro-benchmarks, from Puranjay Mohan. 7) Extend the BPF verifier to track the delta between linked registers in order to better deal with recent LLVM code optimizations, from Alexei Starovoitov. 8) Fix bpf_wq_set_callback_impl() kfunc signature where the third argument should have been a pointer to the map value, from Benjamin Tissoires. 9) Extend BPF selftests to add regular expression support for test output matching and adjust some of the selftest when compiled under gcc, from Cupertino Miranda. 10) Simplify task_file_seq_get_next() and remove an unnecessary loop which always iterates exactly once anyway, from Dan Carpenter. 11) Add the capability to offload the netfilter flowtable in XDP layer through kfuncs, from Florian Westphal & Lorenzo Bianconi. 12) Various cleanups in networking helpers in BPF selftests to shave off a few lines of open-coded functions on client/server handling, from Geliang Tang. 13) Properly propagate prog->aux->tail_call_reachable out of BPF verifier, so that x86 JIT does not need to implement detection, from Leon Hwang. 14) Fix BPF verifier to add a missing check_func_arg_reg_off() to prevent an out-of-bounds memory access for dynpointers, from Matt Bobrowski. 15) Fix bpf_session_cookie() kfunc to return __u64 instead of long pointer as it might lead to problems on 32-bit archs, from Jiri Olsa. 16) Enhance traffic validation and dynamic batch size support in xsk selftests, from Tushar Vyavahare. bpf-next-for-netdev * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (102 commits) selftests/bpf: DENYLIST.aarch64: Remove fexit_sleep selftests/bpf: amend for wrong bpf_wq_set_callback_impl signature bpf: helpers: fix bpf_wq_set_callback_impl signature libbpf: Add NULL checks to bpf_object__{prev_map,next_map} selftests/bpf: Remove exceptions tests from DENYLIST.s390x s390/bpf: Implement exceptions s390/bpf: Change seen_reg to a mask bpf: Remove unnecessary loop in task_file_seq_get_next() riscv, bpf: Optimize stack usage of trampoline bpf, devmap: Add .map_alloc_check selftests/bpf: Remove arena tests from DENYLIST.s390x selftests/bpf: Add UAF tests for arena atomics selftests/bpf: Introduce __arena_global s390/bpf: Support arena atomics s390/bpf: Enable arena s390/bpf: Support address space cast instruction s390/bpf: Support BPF_PROBE_MEM32 s390/bpf: Land on the next JITed instruction after exception s390/bpf: Introduce pre- and post- probe functions s390/bpf: Get rid of get_probe_mem_regno() ... ==================== Link: https://patch.msgid.link/20240708221438.10974-1-daniel@iogearbox.net Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
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Arnd Bergmann
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1f9a8286bc |
uaccess: always export _copy_[from|to]_user with CONFIG_RUST
Rust code needs to be able to access _copy_from_user and _copy_to_user so that it can skip the check_copy_size check in cases where the length is known at compile-time, mirroring the logic for when C code will skip check_copy_size. To do this, we ensure that exported versions of these methods are available when CONFIG_RUST is enabled. Alice has verified that this patch passes the CONFIG_TEST_USER_COPY test on x86 using the Android cuttlefish emulator. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Tested-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Link: https://lore.kernel.org/r/20240528-alice-mm-v7-2-78222c31b8f4@google.com Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
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Andrew Morton
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8ef6fd0e9e |
Merge branch 'mm-hotfixes-stable' into mm-stable to pick up "mm: fix
crashes from deferred split racing folio migration", needed by "mm: migrate: split folio_migrate_mapping()". |
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Paul Menzel
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2fe29fe945 |
lib/build_OID_registry: avoid non-destructive substitution for Perl < 5.13.2 compat
On a system with Perl 5.12.1, commit |
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Daniel Vetter
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86634fa4e6 |
Linux 6.10-rc6
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmaB0NweHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGkvwH/36UJRk/o6wvXnyH E6QjCSWo2226APyWks22NjtC3I/8Iqdvkneuh6wG0qL2sXAB078EMjUq5R81bF8H wWFBJwetjYTp8GEyLioMEb2wCH/J3R29dLFC4UYTplafXRGP6//xcpJaKmTxcgdR 31IzvTPXbApZ7L3k1U6rA2bK9PNKcFCOvZlrNMUCuwMrabymHsDfOUt1DqXyg2xp zjqiWYBwlklozmgawSWt/mdEgkWuTcAbg+KyqDVQF59s9aj/OOwZ0j+HACq5V8CM quTPIAYL6CC9p7uxa69lGr/sgC0Is/BZLPX7RTZAwCgarGvnX+1HUsjDcaFCtrVg O6fPUV8= =pgUx -----END PGP SIGNATURE----- Merge v6.10-rc6 into drm-next The exynos-next pull is based on a newer -rc than drm-next. hence backmerge first to make sure the unrelated conflicts we accumulated don't end up randomly in the exynos merge pull, but are separated out. Conflicts are all benign: Adjacent changes in amdgpu and fbdev-dma code, and cherry-pick conflict in xe. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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Jeff Johnson
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8547d1150f |
math: rational: add missing MODULE_DESCRIPTION() macro
With ARCH=sh, make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/math/rational.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240702-md-sh-lib-math-v1-1-93f4ac4fa8fd@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Jeff Johnson
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bee6c683de |
lib/zlib: add missing MODULE_DESCRIPTION() macro
With ARCH=csky, make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/zlib_deflate/zlib_deflate.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240613-md-csky-lib-zlib_deflate-v1-1-83504d9a27d6@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Cc: Guo Ren <guoren@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Hsin Chang Yu
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cedb08caac |
lib/rbtree.c: fix the example typo
Replace the "Sr" with "sr", the example is wrong if sl and N don't have child nodes, so sr should be red node. Link: https://lkml.kernel.org/r/20240628142229.69419-1-zxcvb600870024@gmail.com Signed-off-by: Hsin Chang Yu <zxcvb600870024@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Jakub Kicinski
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76ed626479 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/phy/aquantia/aquantia.h |
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Ilya Leoshkevich
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89f42df66c |
lib/zlib: unpoison DFLTCC output buffers
The constraints of the DFLTCC inline assembly are not precise: they do not
communicate the size of the output buffers to the compiler, so it cannot
automatically instrument it.
Add the manual kmsan_unpoison_memory() calls for the output buffers. The
logic is the same as in [1].
[1]
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JaeJoon Jung
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739820a617 |
maple_tree: modified return type of mas_wr_store_entry()
Since the return value of mas_wr_store_entry() is not used, the return type can be changed to void. Link: https://lkml.kernel.org/r/20240614092428.29491-1-rgbi3307@gmail.com Signed-off-by: JaeJoon Jung <rgbi3307@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Jeff Johnson
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3c666d0a32 |
lib: test_hmm: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_hmm.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240531-lib-md-test_hmm-v1-1-e4aa17daa57b@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Cc: Jérôme Glisse <jglisse@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Jeff Johnson
|
a619dd3948 |
test_maple_tree: add the missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_maple_tree.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240531-md-lib-test_maple_tree-v1-1-7b1b485aeec3@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Jeff Johnson
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2ec83987a5 |
ubsan: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_ubsan.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240531-md-lib-test_ubsan-v1-1-c2a80d258842@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Kees Cook <keescook@chromium.org> Cc: Marco Elver <elver@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Jeff Johnson
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757234f1ad |
test_xarray: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_xarray.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240531-md-lib-test_xarray-v1-1-42fd6833bdd4@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Anna-Maria Behnsen
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f48955e038 |
vdso/gettimeofday: Clarify comment about open coded function
The two comments state, that the following code open codes something but they lack to specify what exactly is open coded. Expand comments by mentioning the reference to the open coded function. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Link: https://lore.kernel.org/r/20240701-vdso-cleanup-v1-1-36eb64e7ece2@linutronix.de |
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Jeff Johnson
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67c9971cd6 |
kunit/usercopy: Add missing MODULE_DESCRIPTION()
Fix warning seen with: $ make allmodconfig && make W=1 C=1 lib/usercopy_kunit.ko WARNING: modpost: missing MODULE_DESCRIPTION() in lib/usercopy_kunit.o Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Kees Cook <kees@kernel.org> Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Kees Cook
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4d6cf24832 |
kunit/usercopy: Disable testing on !CONFIG_MMU
Since arch_pick_mmap_layout() is an inline for non-MMU systems, disable this test there. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202406160505.uBge6TMY-lkp@intel.com/ Signed-off-by: Kees Cook <kees@kernel.org> Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Greg Kroah-Hartman
|
19ed3bb558 |
Merge 6.10-rc6 into char-misc-next
We need the char/misc/iio fixes in here as well to build on top of. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Jeff Johnson
|
2a49c8b6b6 |
selftests/fpu: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 now reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_fpu.o
Add the missing invocation of the MODULE_DESCRIPTION() macro.
Link: https://lkml.kernel.org/r/20240622-md-i386-lib-test_fpu_glue-v1-1-a4e40b7b1264@quicinc.com
Fixes:
|
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Alexey Dobriyan
|
961a285132 |
build-id: require program headers to be right after ELF header
Neither ELF spec not ELF loader require program header to be placed right after ELF header, but build-id code very much assumes such placement: See find_get_page(vma->vm_file->f_mapping, 0); line and checks against PAGE_SIZE. Returns errors for now until someone rewrites build-id parser to be more inline with load_elf_binary(). Link: https://lkml.kernel.org/r/d58bc281-6ca7-467a-9a64-40fa214bd63e@p183 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Reviewed-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Linus Torvalds
|
b75f947270 |
hardening fixes for v6.10-rc6
- Remove invalid tty __counted_by annotation (Nathan Chancellor) - Add missing MODULE_DESCRIPTION()s for KUnit string tests (Jeff Johnson) - Remove non-functional per-arch kstack entropy filtering -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmZ+4Z4ACgkQiXL039xt wCYUPQ/9Ghbg4CfOIyjl5G7fAYuG+/zLDCkY+kh7XcO2kAn3213KiyRKm0GUAhXY p3N7rDH9NsXedfO2bnQ0YTDR3TU8AWIegKgEyGBsyqvdtjSe0ParwWOoGGpavJZ2 6Op39e6LL2fKGyL4N72lkhRpGPJgGQOqckTljaDl5yQfIHryMpQl0fXzMMjh1HUt TKc39kSRbQxguDdIqU1zHgs+Lu9Kph6A3q9PjVap9qzCcPZ4RjIRms4gDrghP7GK M0POyZbuXUWxaJ8VwRHbqAtEyEGjXdfBW9DgKQM1fg9XWGZbCkucu3PZbPHv+c6e eBGG6O5l6UylmXpmkqLMfIudUekfo8cAEXqcLCBYis8uIuasUWiLMhoTDjdfcvhn HHr6iu25IKR698PZzTHQ5yUiuBP38qjXfXr9DDzXrI2+SUbxjurTfbHxFBWK/FYX YSdrZR4DbeaU/HI1I+I5YghgeRfR6TQ5NGrmj61wW1QnwvEF6Gdlh+MZgUS59SP5 S+T50ggGKEYARZcZj1N6Nz39Co9syn/xlhyPKFPkgsRTXw1QE0z6e841V1jxhr49 cStKFcKAovDeG2UN4bAju49/MWUFlcpkIxn9Y0ZHiu6R6SC9zasXhKi7+xDFolmP B6PmON2ZSSoFNwMr7Fr1SC0gWg7V3TYLmpHITDWz5KL00ReEdJY= =dItV -----END PGP SIGNATURE----- Merge tag 'hardening-v6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening fixes from Kees Cook: - Remove invalid tty __counted_by annotation (Nathan Chancellor) - Add missing MODULE_DESCRIPTION()s for KUnit string tests (Jeff Johnson) - Remove non-functional per-arch kstack entropy filtering * tag 'hardening-v6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: tty: mxser: Remove __counted_by from mxser_board.ports[] randomize_kstack: Remove non-functional per-arch entropy filtering string: kunit: add missing MODULE_DESCRIPTION() macros |
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Linus Torvalds
|
cd63a278ac |
bcachefs fixes for 6.10-rc6
simple stuff: - null ptr/err ptr deref fixes - fix for getting wedged on shutdown after journal error - fix missing recalc_capacity() call, capacity now changes correctly after a device goes read only however: our capacity calculation still doesn't take into account when we have mixed ro/rw devices and the ro devices have data on them, that's going to be a more involved fix to separate accounting for "capacity used on ro devices" and "capacity used on rw devices" - boring syzbot stuff slightly more involved: - discard, invalidate workers are now per device this has the effect of simplifying how we take device refs in these paths, and the device ref cleanup fixes a longstanding race between the device removal path and the discard path - fixes for how the debugfs code takes refs on btree_trans objects we have debugfs code that prints in use btree_trans objects. It uses closure_get() on trans->ref, which is mainly for the cycle detector, but the debugfs code was using it on a closure that may have hit 0, which is not allowed; for performance reasons we cannot avoid having not-in-use transactions on the global list. introduce some new primitives to fix this and make the synchronization here a whole lot saner -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKnAFLkS8Qha+jvQrE6szbY3KbnYFAmZ+ye4ACgkQE6szbY3K bnb4shAAqkKdgB2abIaD1t8+KjUiXwt7seRY4EmzwrEaWniW5bDUYMBvV+tew93j uvGmSKMs4ML/r24hcg0zGPJ9GoWrFb3MWhPYizzRS8QspsUjsECJuehNPCe3RPaf QBgQtKahTge1e41y1frzkiGKqaOGOTtUVLOfPIebe+oJAhRCYRnrGY2dkZTms7Ue aXNtBmnlX3Fkmlm0GiKYrTHpAZz3d0kzdX11Pc2vTXvqo/znuJTTVGnjJkdrHzyv 6cz6YnMKFdxLVbYO1KlB/3Hu9y9qt815g1rjvaqym8pDk9ltsGHNM3LcCCCyp7Of btnbLQ6TdfggK5Kf2hNYuJRY2pnjNyfcNxupQF3RNaw/D/4G5EU16zfFElORC6Mw eGwXLvDIGqOSSIvevoRZrgJKAvVptXNg9EtCI5Z5ujQ4ExW8ti1lPHp/r5SVOhyz x0Am14H2ERuz7Vt5jUas3k74+tAck6JWc5OemMQawA5waeH1inMT7QZuBt+Bmrhx Av0zbhaq4aTsHXmm+Xi6ofj3UBaOQ2rNzT7Au0kxdvJgDPe/USjw4tejV5DmjmHA SyRsTG7Zn5xJBi7jc47fcwUgUzlxlffVQGFCVjRUU1vF6u/Ldn7K0zfYbkwSCiKp iWSEyg3j5z5N69Vrgdadma4xTDjL/C5+XsMWh8G8ohf+crhUeSo= =svIi -----END PGP SIGNATURE----- Merge tag 'bcachefs-2024-06-28' of https://evilpiepirate.org/git/bcachefs Pull bcachefs fixes from Kent Overstreet: "Simple stuff: - NULL ptr/err ptr deref fixes - fix for getting wedged on shutdown after journal error - fix missing recalc_capacity() call, capacity now changes correctly after a device goes read only however: our capacity calculation still doesn't take into account when we have mixed ro/rw devices and the ro devices have data on them, that's going to be a more involved fix to separate accounting for "capacity used on ro devices" and "capacity used on rw devices" - boring syzbot stuff Slightly more involved: - discard, invalidate workers are now per device this has the effect of simplifying how we take device refs in these paths, and the device ref cleanup fixes a longstanding race between the device removal path and the discard path - fixes for how the debugfs code takes refs on btree_trans objects we have debugfs code that prints in use btree_trans objects. It uses closure_get() on trans->ref, which is mainly for the cycle detector, but the debugfs code was using it on a closure that may have hit 0, which is not allowed; for performance reasons we cannot avoid having not-in-use transactions on the global list. Introduce some new primitives to fix this and make the synchronization here a whole lot saner" * tag 'bcachefs-2024-06-28' of https://evilpiepirate.org/git/bcachefs: bcachefs: Fix kmalloc bug in __snapshot_t_mut bcachefs: Discard, invalidate workers are now per device bcachefs: Fix shift-out-of-bounds in bch2_blacklist_entries_gc bcachefs: slab-use-after-free Read in bch2_sb_errors_from_cpu bcachefs: Add missing bch2_journal_do_writes() call bcachefs: Fix null ptr deref in journal_pins_to_text() bcachefs: Add missing recalc_capacity() call bcachefs: Fix btree_trans list ordering bcachefs: Fix race between trans_put() and btree_transactions_read() closures: closure_get_not_zero(), closure_return_sync() bcachefs: Make btree_deadlock_to_text() clearer bcachefs: fix seqmutex_relock() bcachefs: Fix freeing of error pointers |
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Jeff Johnson
|
6a4805b2f5 |
string: kunit: add missing MODULE_DESCRIPTION() macros
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/string_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/string_helpers_kunit.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240531-md-lib-string-v1-1-2738cf057d94@quicinc.com Signed-off-by: Kees Cook <kees@kernel.org> |
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|
Dave Airlie
|
91fdc5e765 |
drm-misc-next for $kernel-version:
UAPI Changes:
Cross-subsystem Changes:
Core Changes:
- panic: Monochrome logo support, Various fixes
- ttm: Improve the number of page faults on some platforms, Fix test
build breakage with PREEMPT_RT, more test coverage and various test
improvements
Driver Changes:
- Add missing MODULE_DESCRIPTION where needed
- ipu-v3: Various fixes
- vc4: Monochrome TV support
- bridge:
- analogix_dp: Various improvements and reworks, handle AUX
transfers timeout
- tc358767: Fix DRM_BRIDGE_ATTACH_NO_CONNECTOR, Fix clock
calculations
- panels:
- More transitions to mipi_dsi wrapped functions
- New panels: Lincoln Technologies LCD197, Ortustech COM35H3P70ULC,
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Merge tag 'drm-misc-next-2024-06-27' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
drm-misc-next for 6.11:
UAPI Changes:
Cross-subsystem Changes:
Core Changes:
- panic: Monochrome logo support, Various fixes
- ttm: Improve the number of page faults on some platforms, Fix test
build breakage with PREEMPT_RT, more test coverage and various test
improvements
Driver Changes:
- Add missing MODULE_DESCRIPTION where needed
- ipu-v3: Various fixes
- vc4: Monochrome TV support
- bridge:
- analogix_dp: Various improvements and reworks, handle AUX
transfers timeout
- tc358767: Fix DRM_BRIDGE_ATTACH_NO_CONNECTOR, Fix clock
calculations
- panels:
- More transitions to mipi_dsi wrapped functions
- New panels: Lincoln Technologies LCD197, Ortustech COM35H3P70ULC,
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240627-congenial-pistachio-nyala-848cf4@houat
|
||
|
Jakub Kicinski
|
193b9b2002 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts. Adjacent changes: |
||
|
Leon Hwang
|
d65f3767de |
bpf: Fix tailcall cases in test_bpf
Since |
||
|
Heng Qi
|
13ba28c5cd |
dim: add new interfaces for initialization and getting results
DIM-related mode and work have been collected in one same place, so new interfaces are added to provide convenience. Signed-off-by: Heng Qi <hengqi@linux.alibaba.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20240621101353.107425-5-hengqi@linux.alibaba.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Heng Qi
|
f750dfe825 |
ethtool: provide customized dim profile management
The NetDIM library, currently leveraged by an array of NICs, delivers
excellent acceleration benefits. Nevertheless, NICs vary significantly
in their dim profile list prerequisites.
Specifically, virtio-net backends may present diverse sw or hw device
implementation, making a one-size-fits-all parameter list impractical.
On Alibaba Cloud, the virtio DPU's performance under the default DIM
profile falls short of expectations, partly due to a mismatch in
parameter configuration.
I also noticed that ice/idpf/ena and other NICs have customized
profilelist or placed some restrictions on dim capabilities.
Motivated by this, I tried adding new params for "ethtool -C" that provides
a per-device control to modify and access a device's interrupt parameters.
Usage
========
The target NIC is named ethx.
Assume that ethx only declares support for rx profile setting
(with DIM_PROFILE_RX flag set in profile_flags) and supports modification
of usec and pkt fields.
1. Query the currently customized list of the device
$ ethtool -c ethx
...
rx-profile:
{.usec = 1, .pkts = 256, .comps = n/a,},
{.usec = 8, .pkts = 256, .comps = n/a,},
{.usec = 64, .pkts = 256, .comps = n/a,},
{.usec = 128, .pkts = 256, .comps = n/a,},
{.usec = 256, .pkts = 256, .comps = n/a,}
tx-profile: n/a
2. Tune
$ ethtool -C ethx rx-profile 1,1,n_2,n,n_3,3,n_4,4,n_n,5,n
"n" means do not modify this field.
$ ethtool -c ethx
...
rx-profile:
{.usec = 1, .pkts = 1, .comps = n/a,},
{.usec = 2, .pkts = 256, .comps = n/a,},
{.usec = 3, .pkts = 3, .comps = n/a,},
{.usec = 4, .pkts = 4, .comps = n/a,},
{.usec = 256, .pkts = 5, .comps = n/a,}
tx-profile: n/a
3. Hint
If the device does not support some type of customized dim profiles,
the corresponding "n/a" will display.
If the "n/a" field is being modified, -EOPNOTSUPP will be reported.
Signed-off-by: Heng Qi <hengqi@linux.alibaba.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20240621101353.107425-4-hengqi@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
|
Heng Qi
|
b65e697a7c |
dim: make DIMLIB dependent on NET
DIMLIB's capabilities are supplied by the dim, net_dim, and rdma_dim objects, and dim's interfaces solely act as a base for net_dim and rdma_dim and are not explicitly used anywhere else. rdma_dim is utilized by the infiniband driver, while net_dim is for network devices, excluding the soc/fsl driver. In this patch, net_dim relies on some NET's interfaces, thus DIMLIB needs to explicitly depend on the NET Kconfig. The soc/fsl driver uses the functions provided by net_dim, so it also needs to depend on NET. Signed-off-by: Heng Qi <hengqi@linux.alibaba.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20240621101353.107425-3-hengqi@linux.alibaba.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Heng Qi
|
0e942053e4 |
linux/dim: move useful macros to .h file
Useful macros will be used effectively elsewhere. These will be utilized in subsequent patches. Signed-off-by: Heng Qi <hengqi@linux.alibaba.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20240621101353.107425-2-hengqi@linux.alibaba.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jeff Johnson
|
3034749132 |
KUnit: add missing MODULE_DESCRIPTION() macros for lib/test_*.ko
make allmodconfig && make W=1 C=1 reports for lib/test_*.ko: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_hexdump.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_dhry.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_firmware.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_sysctl.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_hash.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_ida.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_list_sort.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_min_heap.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_module.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_sort.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_static_keys.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_static_key_base.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_memcat_p.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_blackhole_dev.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_meminit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_free_pages.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_kprobes.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_ref_tracker.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_bits.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240619-md-lib-test-v2-1-301e30eeba1e@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Reviewed-by: Kees Cook <kees@kernel.org> Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org> Cc: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
d2917ff199 |
lib/dump_stack: report process UID in dump_stack_print_info()
To make it easier to identify the crashing process, report effective UID when dumping the stack. Link: https://lkml.kernel.org/r/20240615041358.103791-1-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
I Hsin Cheng
|
c8dab79f9e |
lib/plist.c: avoid worst case scenario in plist_add
Worst case scenario of plist_add() happens when the priority of the inserted plist_node is going to be the largest after the insertion is done. The cost is going to be more significant when the original plist is longer, because the iterator is going to traverse the whole plist to find the correct position to insert the new node. The situation can be avoided by using a reverse iterator at the same time, doing so the maximum possible number of iteration is going to shrink from N to N/2. The proposed change of plist_add pasts the test in lib/plist.c to validate its correctness, also add the worst case scenario test for plist_add() in plist_test(). The worst case test are tested with the size of test_data and test_node growing from 200 to 1000. The result are showned in the following table, in which we can observed that the proposed change of plist_add performs better than the original version, and the difference between these two implementations are more significant with the size of N growing. The random case test [1], and best case test [2] are also provided, with result showing the proposed change performs slightly better in random case test while the original implementation performs slightly better in best case test, while the difference in both test are minor, we can see them as even in those two situations. ----------------------------------------------------------- | Test size | 200 | 400 | 600 | 800 | 1000 | ----------------------------------------------------------- | new_plist_add | 140911| 548681| 1220512| 2048493| 3763755| ----------------------------------------------------------- | old_plist_add | 188198| 774222| 1643547| 3008929| 4947435| ----------------------------------------------------------- Link: https://lkml.kernel.org/r/20240614154603.65203-1-richard120310@gmail.com Signed-off-by: I Hsin Cheng <richard120310@gmail.com> Signed-off-by: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Brian Masney
|
d0bff05405 |
lib/Kconfig.debug: document panic= command line option and procfs entry for PANIC_TIMEOUT
PANIC_TIMEOUT can also be controlled with the panic= kernel command line option and the file /proc/sys/kernel/panic. Let's document both of these in the Kconfig help text. Link: https://lkml.kernel.org/r/20240607152443.925168-1-bmasney@redhat.com Signed-off-by: Brian Masney <bmasney@redhat.com> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Jeff Johnson
|
09aaf15a78 |
lib/test_linear_ranges: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_linear_ranges.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240531-md-lib-test_linear_ranges-v1-1-053a1aad37c6@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Jeff Johnson
|
7ef148daa5 |
lib/test_kmod: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_kmod.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240531-md-lib-test_kmod-v1-1-fdf11bc6095e@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Jeff Johnson
|
d46a555d3c |
siphash: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/siphash_kunit.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240531-md-lib-siphash_kunit-v1-1-38688065b796@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Cc: Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Jeff Johnson
|
683da20738 |
uuid: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_uuid.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240531-md-lib-test_uuid-v1-1-67fa498104c0@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Jeff Johnson
|
1c5a13b39d |
kunit: add missing MODULE_DESCRIPTION() macros to lib/*.c
make allmodconfig && make W=1 C=1 reports for lib/*kunit: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/bitfield_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/checksum_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/cmdline_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/is_signed_type_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/overflow_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/stackinit_kunit.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240601-md-lib-kunit-tests-v1-1-4493fe0032b9@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Jeff Johnson
|
2e29fcb774 |
lib/asn1_encoder: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/asn1_encoder.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240601-md-lib-asn1_encoder-v1-1-8c634ed2d2e8@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Jeff Johnson
|
f069e33daf |
KUnit: add missing MODULE_DESCRIPTION() macros for lib/*_test.ko
make allmodconfig && make W=1 C=1 reports for lib/*_test.ko: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/atomic64_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/hashtable_test.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240601-md-lib-test2-v1-1-be764b785f17@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Jeff Johnson
|
e471831be2 |
kunit/fortify: add missing MODULE_DESCRIPTION() macros
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/memcpy_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/fortify_kunit.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240531-md-lib-fortify_source-v1-1-2c37f7fbaafc@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Jani Nikula
|
2f183c6834 |
kernel/panic: add verbose logging of kernel taints in backtraces
With nearly 20 taint flags and respective characters, it's getting a bit difficult to remember what each taint flag character means. Add verbose logging of the set taints in the format: Tainted: [P]=PROPRIETARY_MODULE, [W]=WARN in dump_stack_print_info() when there are taints. Note that the "negative flag" G is not included. Link: https://lkml.kernel.org/r/7321e306166cb2ca2807ab8639e665baa2462e9c.1717146197.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Jeff Johnson
|
21516c56ff |
lib/ts: add missing MODULE_DESCRIPTION() macros
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/ts_kmp.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/ts_bm.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/ts_fsm.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Link: https://lkml.kernel.org/r/20240531-lib-ts-v1-1-03d7f3546c49@quicinc.com Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
I Hsin Cheng
|
7abcb84f95 |
lib/plist.c: enforce memory ordering in plist_check_list
There exists an iteration over a plist in plist_check_list(), and memory dependency exists between variables "prev", "next" and "prev->next". As plist is used in the scheduling subsystem, we should guarantee the memory ordering between multiple processors. Using macro "WRITE_ONCE()" can help us to ensure the memory ordering as it was stated in "Documentation/memory-barriers.txt". Link: https://lkml.kernel.org/r/20240526140139.17220-1-richard120310@gmail.com Signed-off-by: I Hsin Cheng <richard120310@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Mateusz Guzik
|
51d821654b |
percpu_counter: add a cmpxchg-based _add_batch variant
Interrupt disable/enable trips are quite expensive on x86-64 compared to a
mere cmpxchg (note: no lock prefix!) and percpu counters are used quite
often.
With this change I get a bump of 1% ops/s for negative path lookups,
plugged into will-it-scale:
void testcase(unsigned long long *iterations, unsigned long nr)
{
while (1) {
int fd = open("/tmp/nonexistent", O_RDONLY);
assert(fd == -1);
(*iterations)++;
}
}
The win would be higher if it was not for other slowdowns, but one has
to start somewhere.
Link: https://lkml.kernel.org/r/20240528204257.434817-1-mjguzik@gmail.com
Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Dennis Zhou <dennis@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Kuan-Wei Chiu
|
54ce43da25 |
lib/test_sort: add a testcase to ensure code coverage
The addition of an if statement in lib/sort to handle the final unsorted 2 or 3 elements is not covered by existing test cases, leading to incomplete test coverage. To ensure comprehensive testing and maintain 100% code coverage, add a new testcase for scenarios where the if statement is triggered. Since the if statement is only triggered when the array length is odd and the first element is greater than the second element, a testcase is created using an array length of TEST_LEN - 1 and a suitable random seed to maintain full code coverage. Link: https://lkml.kernel.org/r/20240527203011.1644280-5-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kuan-Wei Chiu
|
41ed780435 |
lib/sort: optimize heapsort for handling final 2 or 3 elements
After building the heap, the code continuously pops two elements from the heap until only 2 or 3 elements remain, at which point it switches back to a regular heapsort with one element popped at a time. However, to handle the final 2 or 3 elements, an additional else-if statement in the while loop was introduced, potentially increasing branch misses. Moreover, when there are only 2 or 3 elements left, continuing with regular heapify operations is unnecessary as these cases are simple enough to be handled with a single comparison and 1 or 2 swaps outside the while loop. Eliminating the additional else-if statement and directly managing cases involving 2 or 3 elements outside the loop reduces unnecessary conditional branches resulting from the numerous loops and conditionals in heapify. This optimization maintains consistent numbers of comparisons and swaps for arrays with even lengths while reducing swaps and comparisons for arrays with odd lengths from 2.5 swaps and 1 comparison to 1.5 swaps and 1 comparison. Link: https://lkml.kernel.org/r/20240527203011.1644280-4-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kuan-Wei Chiu
|
f49ac9571b |
lib/sort: fix outdated comment regarding glibc qsort()
The existing comment in lib/sort refers to glibc qsort() using quicksort. However, glibc qsort() no longer uses quicksort; it now uses mergesort and falls back to heapsort if memory allocation for mergesort fails. This makes the comment outdated and incorrect. Update the comment to refer to quicksort in general rather than glibc's implementation to provide accurate information about the comparisons and trade-offs without implying an outdated implementation. Link: https://lkml.kernel.org/r/20240527203011.1644280-3-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kuan-Wei Chiu
|
85fb11a879 |
lib/sort: remove unused pr_fmt macro
Patch series "lib/sort: Optimizations and cleanups". This patch series optimizes the handling of the last 2 or 3 elements in lib/sort and adds a testcase in lib/test_sort to maintain 100% code coverage reflecting this change. Additionally, it corrects outdated descriptions regarding glibc qsort() and removes the unused pr_fmt macro. This patch (of 4): The pr_fmt macro is defined but not used in lib/sort.c. Since there are no pr_* functions printing any messages, the pr_fmt macro is redundant and can be safely removed. Link: https://lkml.kernel.org/r/20240527203011.1644280-1-visitorckw@gmail.com Link: https://lkml.kernel.org/r/20240527203011.1644280-2-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kuan-Wei Chiu
|
7099f74dc3 |
lib/test_min_heap: add test for heap_del()
Add test cases for the min_heap_del() to ensure its functionality is thoroughly tested. Link: https://lkml.kernel.org/r/20240524152958.919343-15-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Reviewed-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Bagas Sanjaya <bagasdotme@gmail.com> Cc: Brian Foster <bfoster@redhat.com> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Cc: Coly Li <colyli@suse.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Sakai <msakai@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kuan-Wei Chiu
|
267607e875 |
lib min_heap: add args for min_heap_callbacks
Add a third parameter 'args' for the 'less' and 'swp' functions in the 'struct min_heap_callbacks'. This additional parameter allows these comparison and swap functions to handle extra arguments when necessary. Link: https://lkml.kernel.org/r/20240524152958.919343-9-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Reviewed-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Bagas Sanjaya <bagasdotme@gmail.com> Cc: Brian Foster <bfoster@redhat.com> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Cc: Coly Li <colyli@suse.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Sakai <msakai@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kuan-Wei Chiu
|
873ce25766 |
lib min_heap: add type safe interface
Implement a type-safe interface for min_heap using strong type pointers instead of void * in the data field. This change includes adding small macro wrappers around functions, enabling the use of __minheap_cast and __minheap_obj_size macros for type casting and obtaining element size. This implementation removes the necessity of passing element size in min_heap_callbacks. Additionally, introduce the MIN_HEAP_PREALLOCATED macro for preallocating some elements. Link: https://lkml.kernel.org/ioyfizrzq7w7mjrqcadtzsfgpuntowtjdw5pgn4qhvsdp4mqqg@nrlek5vmisbu Link: https://lkml.kernel.org/r/20240524152958.919343-5-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Reviewed-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Bagas Sanjaya <bagasdotme@gmail.com> Cc: Brian Foster <bfoster@redhat.com> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Cc: Coly Li <colyli@suse.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Sakai <msakai@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Breno Leitao
|
5b5baba622 |
debugobjects: Annotate racy debug variables
KCSAN has identified a potential data race in debugobjects, where the global variable debug_objects_maxchain is accessed for both reading and writing simultaneously in separate and parallel data paths. This results in the following splat printed by KCSAN: BUG: KCSAN: data-race in debug_check_no_obj_freed / debug_object_activate write to 0xffffffff847ccfc8 of 4 bytes by task 734 on cpu 41: debug_object_activate (lib/debugobjects.c:199 lib/debugobjects.c:564 lib/debugobjects.c:710) call_rcu (kernel/rcu/rcu.h:227 kernel/rcu/tree.c:2719 kernel/rcu/tree.c:2838) security_inode_free (security/security.c:1626) __destroy_inode (./include/linux/fsnotify.h:222 fs/inode.c:287) ... read to 0xffffffff847ccfc8 of 4 bytes by task 384 on cpu 31: debug_check_no_obj_freed (lib/debugobjects.c:1000 lib/debugobjects.c:1019) kfree (mm/slub.c:2081 mm/slub.c:4280 mm/slub.c:4390) percpu_ref_exit (lib/percpu-refcount.c:147) css_free_rwork_fn (kernel/cgroup/cgroup.c:5357) ... value changed: 0x00000070 -> 0x00000071 The data race is actually harmless as this is just used for debugfs statistics, as all other debug variables. Annotate all debug variables as racy explicitly, since these variables are known to be racy and harmless. Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20240611091813.1189860-1-leitao@debian.org |
||
|
Geert Uytterhoeven
|
a03a84bee3 |
lib/fonts: Fix visiblity of SUN12x22 and TER16x32 if DRM_PANIC
When CONFIG_FONTS ("Select compiled-in fonts") is not enabled, the user
should not be asked about any fonts. However, when CONFIG_DRM_PANIC is
enabled, the user is still asked about the Sparc console 12x22 and
Terminus 16x32 fonts.
Fix this by moving the "|| DRM_PANIC" to where it belongs.
Split the dependency in two rules to improve readability.
Fixes:
|
||
|
Kent Overstreet
|
06efa5f30c |
closures: closure_get_not_zero(), closure_return_sync()
Provide new primitives for solving a lifetime issue with bcachefs btree_trans objects. closure_sync_return(): like closure_sync(), wait synchronously for any outstanding gets. like closure_return, the closure is considered "finished" and the ref left at 0. closure_get_not_zero(): get a ref on a closure if it's alive, i.e. the ref is not zero. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
||
|
Linus Torvalds
|
c3de9b572f |
bcachefs fixes for 6.10-rc5
Lots of (mostly boring) fixes for syzbot bugs and rare(r) CI bugs.
The LRU_TIME_BITS fix was slightly more involved; we only have 48 bits
for the LRU position (we would prefer 64), so wraparound is possible for
the cached data LRUs on a filesystem that has done sufficient
(petabytes) reads; this is now handled.
One notable user reported bugfix, where we were forgetting to correctly
set the bucket data type, which should have been BCH_DATA_need_gc_gens
instead of BCH_DATA_free; this was causing us to go emergency read-only
on a filesystem that had seen heavy enough use to see bucket gen
wraparoud.
We're now starting to fix simple (safe) errors without requiring user
intervention - i.e. a small incremental step towards full self healing.
This is currently limited to just certain allocation information
counters, and the error is still logged in the superblock; see that
patch for more information. ("bcachefs: Fix safe errors by default").
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Merge tag 'bcachefs-2024-06-22' of https://evilpiepirate.org/git/bcachefs
Pull bcachefs fixes from Kent Overstreet:
"Lots of (mostly boring) fixes for syzbot bugs and rare(r) CI bugs.
The LRU_TIME_BITS fix was slightly more involved; we only have 48 bits
for the LRU position (we would prefer 64), so wraparound is possible
for the cached data LRUs on a filesystem that has done sufficient
(petabytes) reads; this is now handled.
One notable user reported bugfix, where we were forgetting to
correctly set the bucket data type, which should have been
BCH_DATA_need_gc_gens instead of BCH_DATA_free; this was causing us to
go emergency read-only on a filesystem that had seen heavy enough use
to see bucket gen wraparoud.
We're now starting to fix simple (safe) errors without requiring user
intervention - i.e. a small incremental step towards full self
healing.
This is currently limited to just certain allocation information
counters, and the error is still logged in the superblock; see that
patch for more information. ("bcachefs: Fix safe errors by default")"
* tag 'bcachefs-2024-06-22' of https://evilpiepirate.org/git/bcachefs: (22 commits)
bcachefs: Move the ei_flags setting to after initialization
bcachefs: Fix a UAF after write_super()
bcachefs: Use bch2_print_string_as_lines for long err
bcachefs: Fix I_NEW warning in race path in bch2_inode_insert()
bcachefs: Replace bare EEXIST with private error codes
bcachefs: Fix missing alloc_data_type_set()
closures: Change BUG_ON() to WARN_ON()
bcachefs: fix alignment of VMA for memory mapped files on THP
bcachefs: Fix safe errors by default
bcachefs: Fix bch2_trans_put()
bcachefs: set_worker_desc() for delete_dead_snapshots
bcachefs: Fix bch2_sb_downgrade_update()
bcachefs: Handle cached data LRU wraparound
bcachefs: Guard against overflowing LRU_TIME_BITS
bcachefs: delete_dead_snapshots() doesn't need to go RW
bcachefs: Fix early init error path in journal code
bcachefs: Check for invalid btree IDs
bcachefs: Fix btree ID bitmasks
bcachefs: Fix shift overflow in read_one_super()
bcachefs: Fix a locking bug in the do_discard_fast() path
...
|
||
|
Kent Overstreet
|
339b84ab6b |
closures: Change BUG_ON() to WARN_ON()
If a BUG_ON() can be hit in the wild, it shouldn't be a BUG_ON() For reference, this has popped up once in the CI, and we'll need more info to debug it: 03240 ------------[ cut here ]------------ 03240 kernel BUG at lib/closure.c:21! 03240 kernel BUG at lib/closure.c:21! 03240 Internal error: Oops - BUG: 00000000f2000800 [#1] SMP 03240 Modules linked in: 03240 CPU: 15 PID: 40534 Comm: kworker/u80:1 Not tainted 6.10.0-rc4-ktest-ga56da69799bd #25570 03240 Hardware name: linux,dummy-virt (DT) 03240 Workqueue: btree_update btree_interior_update_work 03240 pstate: 00001005 (nzcv daif -PAN -UAO -TCO -DIT +SSBS BTYPE=--) 03240 pc : closure_put+0x224/0x2a0 03240 lr : closure_put+0x24/0x2a0 03240 sp : ffff0000d12071c0 03240 x29: ffff0000d12071c0 x28: dfff800000000000 x27: ffff0000d1207360 03240 x26: 0000000000000040 x25: 0000000000000040 x24: 0000000000000040 03240 x23: ffff0000c1f20180 x22: 0000000000000000 x21: ffff0000c1f20168 03240 x20: 0000000040000000 x19: ffff0000c1f20140 x18: 0000000000000001 03240 x17: 0000000000003aa0 x16: 0000000000003ad0 x15: 1fffe0001c326974 03240 x14: 0000000000000a1e x13: 0000000000000000 x12: 1fffe000183e402d 03240 x11: ffff6000183e402d x10: dfff800000000000 x9 : ffff6000183e402e 03240 x8 : 0000000000000001 x7 : 00009fffe7c1bfd3 x6 : ffff0000c1f2016b 03240 x5 : ffff0000c1f20168 x4 : ffff6000183e402e x3 : ffff800081391954 03240 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 00000000a8000000 03240 Call trace: 03240 closure_put+0x224/0x2a0 03240 bch2_check_for_deadlock+0x910/0x1028 03240 bch2_six_check_for_deadlock+0x1c/0x30 03240 six_lock_slowpath.isra.0+0x29c/0xed0 03240 six_lock_ip_waiter+0xa8/0xf8 03240 __bch2_btree_node_lock_write+0x14c/0x298 03240 bch2_trans_lock_write+0x6d4/0xb10 03240 __bch2_trans_commit+0x135c/0x5520 03240 btree_interior_update_work+0x1248/0x1c10 03240 process_scheduled_works+0x53c/0xd90 03240 worker_thread+0x370/0x8c8 03240 kthread+0x258/0x2e8 03240 ret_from_fork+0x10/0x20 03240 Code: aa1303e0 d63f0020 a94363f7 17ffff8c (d4210000) 03240 ---[ end trace 0000000000000000 ]--- 03240 Kernel panic - not syncing: Oops - BUG: Fatal exception 03240 SMP: stopping secondary CPUs 03241 SMP: failed to stop secondary CPUs 13,15 03241 Kernel Offset: disabled 03241 CPU features: 0x00,00000003,80000008,4240500b 03241 Memory Limit: none 03241 ---[ end Kernel panic - not syncing: Oops - BUG: Fatal exception ]--- 03246 ========= FAILED TIMEOUT copygc_torture_no_checksum in 7200s Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
||
|
Jeff Johnson
|
3cbe18b0bc |
crypto: lib - add missing MODULE_DESCRIPTION() macros
With ARCH=arm, make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libsha256.o Add the missing invocation of the MODULE_DESCRIPTION() macro to all files which have a MODULE_LICENSE(). This includes sha1.c and utils.c which, although they did not produce a warning with the arm allmodconfig configuration, may cause this warning with other configurations. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Jiapeng Chong
|
b44327ebc1 |
crypto: lib/mpi - Use swap() in mpi_powm()
Use existing swap() function rather than duplicating its implementation. ./lib/crypto/mpi/mpi-pow.c:211:11-12: WARNING opportunity for swap(). ./lib/crypto/mpi/mpi-pow.c:239:12-13: WARNING opportunity for swap(). Reported-by: Abaci Robot <abaci@linux.alibaba.com> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9327 Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Jiapeng Chong
|
f0da7a231c |
crypto: lib/mpi - Use swap() in mpi_ec_mul_point()
Use existing swap() function rather than duplicating its implementation. ./lib/crypto/mpi/ec.c:1291:20-21: WARNING opportunity for swap(). ./lib/crypto/mpi/ec.c:1292:20-21: WARNING opportunity for swap(). Reported-by: Abaci Robot <abaci@linux.alibaba.com> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=9328 Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Dave Airlie
|
f680df51ca |
drm-misc-next for 6.11:
UAPI Changes:
- Deprecate DRM date and return a 0 date in DRM_IOCTL_VERSION
Core Changes:
- connector: Create a set of helpers to help with HDMI support
- fbdev: Create memory manager optimized fbdev emulation
- panic: Allow to select fonts, improve drm_fb_dma_get_scanout_buffer
Driver Changes:
- Remove driver owner assignments
- Allow more drivers to compile with COMPILE_TEST
- Conversions to drm_edid
- ivpu: hardware scheduler support, profiling support, improvements
to the platform support layer
- mgag200: general reworks and improvements
- nouveau: Add NVreg_RegistryDwords command line option
- rockchip: Conversion to the hdmi helpers
- sun4i: Conversion to the hdmi helpers
- vc4: Conversion to the hdmi helpers
- v3d: Perf counters improvements
- zynqmp: IRQ and debugfs improvements
- bridge:
- Remove redundant checks on bridge->encoder
- panels:
- Switch panels from register table initialization to proper code
- Now that the panel code tracks the panel state, remove every
ad-hoc implementation in the panel drivers
- New panels: Lincoln Tech Sol LCD185-101CT, Microtips Technology
13-101HIEBCAF0-C, Microtips Technology MF-103HIEB0GA0, BOE
nv110wum-l60, IVO t109nw41
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Merge tag 'drm-misc-next-2024-05-30' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
drm-misc-next for 6.11:
UAPI Changes:
- Deprecate DRM date and return a 0 date in DRM_IOCTL_VERSION
Core Changes:
- connector: Create a set of helpers to help with HDMI support
- fbdev: Create memory manager optimized fbdev emulation
- panic: Allow to select fonts, improve drm_fb_dma_get_scanout_buffer
Driver Changes:
- Remove driver owner assignments
- Allow more drivers to compile with COMPILE_TEST
- Conversions to drm_edid
- ivpu: hardware scheduler support, profiling support, improvements
to the platform support layer
- mgag200: general reworks and improvements
- nouveau: Add NVreg_RegistryDwords command line option
- rockchip: Conversion to the hdmi helpers
- sun4i: Conversion to the hdmi helpers
- vc4: Conversion to the hdmi helpers
- v3d: Perf counters improvements
- zynqmp: IRQ and debugfs improvements
- bridge:
- Remove redundant checks on bridge->encoder
- panels:
- Switch panels from register table initialization to proper code
- Now that the panel code tracks the panel state, remove every
ad-hoc implementation in the panel drivers
- New panels: Lincoln Tech Sol LCD185-101CT, Microtips Technology
13-101HIEBCAF0-C, Microtips Technology MF-103HIEB0GA0, BOE
nv110wum-l60, IVO t109nw41
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240530-hilarious-flat-magpie-5fa186@houat
|
||
|
Jakub Kicinski
|
a6ec08beec |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/ethernet/broadcom/bnxt/bnxt.c |
||
|
Kees Cook
|
2003e483a8 |
fortify: Do not special-case 0-sized destinations
All fake flexible arrays should have been removed now, so remove the special casing that was avoiding checking them. If a destination claims to be 0 sized, believe it. This is especially important for cases where __counted_by is in use and may have a 0 element count. Link: https://lore.kernel.org/r/20240619203105.work.747-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
David Vernet
|
1538e33995 |
sched_ext: Print sched_ext info when dumping stack
It would be useful to see what the sched_ext scheduler state is, and what scheduler is running, when we're dumping a task's stack. This patch therefore adds a new print_scx_info() function that's called in the same context as print_worker_info() and print_stop_info(). An example dump follows. BUG: kernel NULL pointer dereference, address: 0000000000000999 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 0 P4D 0 Oops: 0002 [#1] PREEMPT SMP CPU: 13 PID: 2047 Comm: insmod Tainted: G O 6.6.0-work-10323-gb58d4cae8e99-dirty #34 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS unknown 2/2/2022 Sched_ext: qmap (enabled+all), task: runnable_at=-17ms RIP: 0010:init_module+0x9/0x1000 [test_module] ... v3: - scx_ops_enable_state_str[] definition moved to an earlier patch as it's now used by core implementation. - Convert jiffy delta to msecs using jiffies_to_msecs() instead of multiplying by (HZ / MSEC_PER_SEC). The conversion is implemented in jiffies_delta_msecs(). v2: - We are now using scx_ops_enable_state_str[] outside CONFIG_SCHED_DEBUG. Move it outside of CONFIG_SCHED_DEBUG and to the top. This was reported by Changwoo and Andrea. Signed-off-by: David Vernet <void@manifault.com> Reported-by: Changwoo Min <changwoo@igalia.com> Reported-by: Andrea Righi <andrea.righi@canonical.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Jeff Johnson
|
e334771d83 |
lib: bitmap: add missing MODULE_DESCRIPTION() macros
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/find_bit_benchmark.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/cpumask_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_bitmap.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
||
|
Linus Torvalds
|
5d272dd1b3 |
cpumask: limit FORCE_NR_CPUS to just the UP case
Hardcoding the number of CPUs at compile time does improve code
generation, but if you get it wrong the result will be confusion.
We already limited this earlier to only "experts" (see commit
|
||
|
Linus Torvalds
|
e6b324fbf2 |
19 hotfixes, 8 of which are cc:stable.
Mainly MM singleton fixes. And a couple of ocfs2 regression fixes. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZnCEQAAKCRDdBJ7gKXxA jmgSAQDk3BYs1n67cnwx/Zi04yMYDyfYTCYg2udPfT2a+GpmbwD+N5dJd/vCztXH 5eLpP11xd/yr2+I9FefyZeUuA80KtgQ= =2agY -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2024-06-17-11-43' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "Mainly MM singleton fixes. And a couple of ocfs2 regression fixes" * tag 'mm-hotfixes-stable-2024-06-17-11-43' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: kcov: don't lose track of remote references during softirqs mm: shmem: fix getting incorrect lruvec when replacing a shmem folio mm/debug_vm_pgtable: drop RANDOM_ORVALUE trick mm: fix possible OOB in numa_rebuild_large_mapping() mm/migrate: fix kernel BUG at mm/compaction.c:2761! selftests: mm: make map_fixed_noreplace test names stable mm/memfd: add documentation for MFD_NOEXEC_SEAL MFD_EXEC mm: mmap: allow for the maximum number of bits for randomizing mmap_base by default gcov: add support for GCC 14 zap_pid_ns_processes: clear TIF_NOTIFY_SIGNAL along with TIF_SIGPENDING mm: huge_memory: fix misused mapping_large_folio_support() for anon folios lib/alloc_tag: fix RCU imbalance in pgalloc_tag_get() lib/alloc_tag: do not register sysctl interface when CONFIG_SYSCTL=n MAINTAINERS: remove Lorenzo as vmalloc reviewer Revert "mm: init_mlocked_on_free_v3" mm/page_table_check: fix crash on ZONE_DEVICE gcc: disable '-Warray-bounds' for gcc-9 ocfs2: fix NULL pointer dereference in ocfs2_abort_trigger() ocfs2: fix NULL pointer dereference in ocfs2_journal_dirty() |
||
|
Linus Torvalds
|
5cf81d7b0d |
hardening fixes for v6.10-rc5
- yama: document function parameter (Christian Göttsche_ - mm/util: Swap kmemdup_array() arguments (Jean-Philippe Brucker) - kunit/overflow: Adjust for __counted_by with DEFINE_RAW_FLEX() - MAINTAINERS: Update entries for Kees Cook -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmZwfVsACgkQiXL039xt wCYfuQ/+KidYsVlf9xhc9eU6XQQZmPXhQT7QCWZEX2xj6xdob5Pv+YBHrL2dGCvn 4b7xqWFqrkjDGVEQW5zF7mmn9T7a3c6+czKUR6rSueB6aO+NFns961rCBViYWxLN /xgee/1iCRg5iwg6SfP5CR9NIr9h6jU9d4Mv7cT2rwy913bCeQa89gkqCD2LJXmr m9HZgT0vsgfUO3+XsA42LKpP+dP+8UHtTumNOZrqnzZr9k69io9ncRjzmS/LjQPL ILo3QQ6QIV8bkSlOogMLZNHRc84Sc8x91KUM42ZUhV2tNxpNG6lt6UZXPATbvq/g TLHxvayjYOTWwF2DmlXncF/rtDLugsg/lyGS4tPjRX00Iq+jaTm1HOVJQ0rDUeLI lmMlGyDzAPK7UXU3hmx+i3sOuyt6HbfJYwF/7ErR0plDaWIbUrqy7uVxarag3qnc i4Lrr/5OdThUKl1jTBIBmfrOELI+m5opMvF2zUpS1BgHUw1U33rHWxQRoW1iTUnH Df11bl0NycmxyY0Vv4M1dnm8uP7XpjfFbdi87xj4+lGGKTM+wM9iQhrHVLBeIdPa dntZfsFB2ZF8LYlNXVnOcWLJjQP8SC99VCMsp/Un6AVmu/HMBP/+cZ6LHGWcUoWz qVrxqu9OjnK7jqsaDbDm3TLroCzL/8/oLRbqXuGJNamLOxz9oW0= =RFT7 -----END PGP SIGNATURE----- Merge tag 'hardening-v6.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening fixes from Kees Cook: - yama: document function parameter (Christian Göttsche) - mm/util: Swap kmemdup_array() arguments (Jean-Philippe Brucker) - kunit/overflow: Adjust for __counted_by with DEFINE_RAW_FLEX() - MAINTAINERS: Update entries for Kees Cook * tag 'hardening-v6.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: MAINTAINERS: Update entries for Kees Cook kunit/overflow: Adjust for __counted_by with DEFINE_RAW_FLEX() yama: document function parameter mm/util: Swap kmemdup_array() arguments |
||
|
Greg Kroah-Hartman
|
b5dd424181 |
Linux 6.10-rc4
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmZvTbAeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGVksIAJEn4a9IVM8FNCJy Dxo0BItD1/qJ5mLDptqUFRKlxInjbojofz5CyoeIeXb0DwRfB16ALXqNXAkd3APi saoOpfjFsg2H2OqL9CHdkzWcJEAq2lDnL0zaOjumeDVu/EyeT+tC4e4hq1e6Bm0E fPC5ms2b+07DF9Rg6/DW8yPbdM5n6Mz1bRd3fQOIgvpM3yGOyGztEBgTRub/ZUgH 5pNJauknFAZgdiWhgNpc+lPWYZbgHKULQPhUBPdVhDIXPtQNUlKgNTQc6+L0Nmbb K1sG1q7FLeMJOTFGQfD4r26X5DNQUi894q/9SX8X7rcrECdJKcw2WjVyB4myADpf ae2gP+A= =XjWP -----END PGP SIGNATURE----- Merge tag 'v6.10-rc4' into driver-core-next We need the driver core and sysfs fixes in here to build on top of. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Greg Kroah-Hartman
|
2046047295 |
Linux 6.10-rc4
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmZvTbAeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGVksIAJEn4a9IVM8FNCJy Dxo0BItD1/qJ5mLDptqUFRKlxInjbojofz5CyoeIeXb0DwRfB16ALXqNXAkd3APi saoOpfjFsg2H2OqL9CHdkzWcJEAq2lDnL0zaOjumeDVu/EyeT+tC4e4hq1e6Bm0E fPC5ms2b+07DF9Rg6/DW8yPbdM5n6Mz1bRd3fQOIgvpM3yGOyGztEBgTRub/ZUgH 5pNJauknFAZgdiWhgNpc+lPWYZbgHKULQPhUBPdVhDIXPtQNUlKgNTQc6+L0Nmbb K1sG1q7FLeMJOTFGQfD4r26X5DNQUi894q/9SX8X7rcrECdJKcw2WjVyB4myADpf ae2gP+A= =XjWP -----END PGP SIGNATURE----- Merge tag 'v6.10-rc4' into char-misc-next We need the char-misc and iio fixes in here as well to build on top of. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Suren Baghdasaryan
|
c944bf60c1 |
lib/alloc_tag: do not register sysctl interface when CONFIG_SYSCTL=n
Memory allocation profiling is trying to register sysctl interface even
when CONFIG_SYSCTL=n, resulting in proc_do_static_key() being undefined.
Prevent that by skipping sysctl registration for such configurations.
Link: https://lkml.kernel.org/r/20240601233831.617124-1-surenb@google.com
Fixes:
|
||
|
Kees Cook
|
cf6219ee88 |
usercopy: Convert test_user_copy to KUnit test
Convert the runtime tests of hardened usercopy to standard KUnit tests. Additionally disable usercopy_test_invalid() for systems with separate address spaces (or no MMU) since it's not sensible to test for address confusion there (e.g. m68k). Co-developed-by: Vitor Massaru Iha <vitor@massaru.org> Signed-off-by: Vitor Massaru Iha <vitor@massaru.org> Link: https://lore.kernel.org/r/20200721174654.72132-1-vitor@massaru.org Tested-by: Ivan Orlov <ivan.orlov0322@gmail.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Kees Cook <kees@kernel.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Kees Cook
|
51104c19d8 |
kunit: test: Add vm_mmap() allocation resource manager
For tests that need to allocate using vm_mmap() (e.g. usercopy and execve), provide the interface to have the allocation tracked by KUnit itself. This requires bringing up a placeholder userspace mm. This combines my earlier attempt at this with Mark Rutland's version[1]. Normally alloc_mm() and arch_pick_mmap_layout() aren't exported for modules, so export these only for KUnit testing. Link: https://lore.kernel.org/lkml/20230321122514.1743889-2-mark.rutland@arm.com/ [1] Co-developed-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Kees Cook <kees@kernel.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Joel Granados
|
e2a6c472de |
mm profiling: Remove superfluous sentinel element from ctl_table
This commit is part of a greater effort to remove all empty elements at the end of the ctl_table arrays (sentinels) which will reduce the overall build time size of the kernel and run time memory bloat by ~64 bytes per sentinel (further information Link : https://lore.kernel.org/all/ZO5Yx5JFogGi%2FcBo@bombadil.infradead.org/) Removed sentinel from memory_allocation_profiling_sysctls Signed-off-by: Joel Granados <j.granados@samsung.com> |
||
|
Jeff Johnson
|
a930fde94a |
vsprintf: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_printf.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_scanf.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240531-md-vsprintf-v1-1-d8bc7e21539a@quicinc.com Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> |
||
|
Zijun Hu
|
dd6e9894b4 |
kobject_uevent: Fix OOB access within zap_modalias_env()
zap_modalias_env() wrongly calculates size of memory block to move, so
will cause OOB memory access issue if variable MODALIAS is not the last
one within its @env parameter, fixed by correcting size to memmove.
Fixes:
|
||
|
Jakub Kicinski
|
b1156532bc |
bpf-next-for-netdev
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZmIsRAAKCRDbK58LschI g4SSAP0bkl6rPMn7zp1h+/l7hlvpp2aVOmasBTe8hIhAGUbluwD/TGq4sNsGgXFI i4tUtFRhw8pOjy2guy6526qyJvBs8wY= =WMhY -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2024-06-06 We've added 54 non-merge commits during the last 10 day(s) which contain a total of 50 files changed, 1887 insertions(+), 527 deletions(-). The main changes are: 1) Add a user space notification mechanism via epoll when a struct_ops object is getting detached/unregistered, from Kui-Feng Lee. 2) Big batch of BPF selftest refactoring for sockmap and BPF congctl tests, from Geliang Tang. 3) Add BTF field (type and string fields, right now) iterator support to libbpf instead of using existing callback-based approaches, from Andrii Nakryiko. 4) Extend BPF selftests for the latter with a new btf_field_iter selftest, from Alan Maguire. 5) Add new kfuncs for a generic, open-coded bits iterator, from Yafang Shao. 6) Fix BPF selftests' kallsyms_find() helper under kernels configured with CONFIG_LTO_CLANG_THIN, from Yonghong Song. 7) Remove a bunch of unused structs in BPF selftests, from David Alan Gilbert. 8) Convert test_sockmap section names into names understood by libbpf so it can deduce program type and attach type, from Jakub Sitnicki. 9) Extend libbpf with the ability to configure log verbosity via LIBBPF_LOG_LEVEL environment variable, from Mykyta Yatsenko. 10) Fix BPF selftests with regards to bpf_cookie and find_vma flakiness in nested VMs, from Song Liu. 11) Extend riscv32/64 JITs to introduce shift/add helpers to generate Zba optimization, from Xiao Wang. 12) Enable BPF programs to declare arrays and struct fields with kptr, bpf_rb_root, and bpf_list_head, from Kui-Feng Lee. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (54 commits) selftests/bpf: Drop useless arguments of do_test in bpf_tcp_ca selftests/bpf: Use start_test in test_dctcp in bpf_tcp_ca selftests/bpf: Use start_test in test_dctcp_fallback in bpf_tcp_ca selftests/bpf: Add start_test helper in bpf_tcp_ca selftests/bpf: Use connect_to_fd_opts in do_test in bpf_tcp_ca libbpf: Auto-attach struct_ops BPF maps in BPF skeleton selftests/bpf: Add btf_field_iter selftests selftests/bpf: Fix send_signal test with nested CONFIG_PARAVIRT libbpf: Remove callback-based type/string BTF field visitor helpers bpftool: Use BTF field iterator in btfgen libbpf: Make use of BTF field iterator in BTF handling code libbpf: Make use of BTF field iterator in BPF linker code libbpf: Add BTF field iterator selftests/bpf: Ignore .llvm.<hash> suffix in kallsyms_find() selftests/bpf: Fix bpf_cookie and find_vma in nested VM selftests/bpf: Test global bpf_list_head arrays. selftests/bpf: Test global bpf_rb_root arrays and fields in nested struct types. selftests/bpf: Test kptr arrays and kptrs in nested struct fields. bpf: limit the number of levels of a nested struct type. bpf: look into the types of the fields of a struct type recursively. ... ==================== Link: https://lore.kernel.org/r/20240606223146.23020-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Kees Cook
|
9dd5134c61 |
kunit/overflow: Adjust for __counted_by with DEFINE_RAW_FLEX()
When a flexible array structure has a __counted_by annotation, its use with DEFINE_RAW_FLEX() will result in the count being zero-initialized. This is expected since one doesn't want to use RAW with a counted_by struct. Adjust the tests to check for the condition and for compiler support. Reported-by: Christian Schrefl <chrisi.schrefl@gmail.com> Closes: https://lore.kernel.org/all/0bfc6b38-8bc5-4971-b6fb-dc642a73fbfe@gmail.com/ Suggested-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20240610182301.work.272-kees@kernel.org Tested-by: Christian Schrefl <chrisi.schrefl@gmail.com> Reviewed-by: Christian Schrefl <chrisi.schrefl@gmail.com> Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Ido Schimmel
|
97d833ceb2 |
mlxsw: spectrum_acl_erp: Fix object nesting warning
ACLs in Spectrum-2 and newer ASICs can reside in the algorithmic TCAM
(A-TCAM) or in the ordinary circuit TCAM (C-TCAM). The former can
contain more ACLs (i.e., tc filters), but the number of masks in each
region (i.e., tc chain) is limited.
In order to mitigate the effects of the above limitation, the device
allows filters to share a single mask if their masks only differ in up
to 8 consecutive bits. For example, dst_ip/25 can be represented using
dst_ip/24 with a delta of 1 bit. The C-TCAM does not have a limit on the
number of masks being used (and therefore does not support mask
aggregation), but can contain a limited number of filters.
The driver uses the "objagg" library to perform the mask aggregation by
passing it objects that consist of the filter's mask and whether the
filter is to be inserted into the A-TCAM or the C-TCAM since filters in
different TCAMs cannot share a mask.
The set of created objects is dependent on the insertion order of the
filters and is not necessarily optimal. Therefore, the driver will
periodically ask the library to compute a more optimal set ("hints") by
looking at all the existing objects.
When the library asks the driver whether two objects can be aggregated
the driver only compares the provided masks and ignores the A-TCAM /
C-TCAM indication. This is the right thing to do since the goal is to
move as many filters as possible to the A-TCAM. The driver also forbids
two identical masks from being aggregated since this can only happen if
one was intentionally put in the C-TCAM to avoid a conflict in the
A-TCAM.
The above can result in the following set of hints:
H1: {mask X, A-TCAM} -> H2: {mask Y, A-TCAM} // X is Y + delta
H3: {mask Y, C-TCAM} -> H4: {mask Z, A-TCAM} // Y is Z + delta
After getting the hints from the library the driver will start migrating
filters from one region to another while consulting the computed hints
and instructing the device to perform a lookup in both regions during
the transition.
Assuming a filter with mask X is being migrated into the A-TCAM in the
new region, the hints lookup will return H1. Since H2 is the parent of
H1, the library will try to find the object associated with it and
create it if necessary in which case another hints lookup (recursive)
will be performed. This hints lookup for {mask Y, A-TCAM} will either
return H2 or H3 since the driver passes the library an object comparison
function that ignores the A-TCAM / C-TCAM indication.
This can eventually lead to nested objects which are not supported by
the library [1].
Fix by removing the object comparison function from both the driver and
the library as the driver was the only user. That way the lookup will
only return exact matches.
I do not have a reliable reproducer that can reproduce the issue in a
timely manner, but before the fix the issue would reproduce in several
minutes and with the fix it does not reproduce in over an hour.
Note that the current usefulness of the hints is limited because they
include the C-TCAM indication and represent aggregation that cannot
actually happen. This will be addressed in net-next.
[1]
WARNING: CPU: 0 PID: 153 at lib/objagg.c:170 objagg_obj_parent_assign+0xb5/0xd0
Modules linked in:
CPU: 0 PID: 153 Comm: kworker/0:18 Not tainted 6.9.0-rc6-custom-g70fbc2c1c38b #42
Hardware name: Mellanox Technologies Ltd. MSN3700C/VMOD0008, BIOS 5.11 10/10/2018
Workqueue: mlxsw_core mlxsw_sp_acl_tcam_vregion_rehash_work
RIP: 0010:objagg_obj_parent_assign+0xb5/0xd0
[...]
Call Trace:
<TASK>
__objagg_obj_get+0x2bb/0x580
objagg_obj_get+0xe/0x80
mlxsw_sp_acl_erp_mask_get+0xb5/0xf0
mlxsw_sp_acl_atcam_entry_add+0xe8/0x3c0
mlxsw_sp_acl_tcam_entry_create+0x5e/0xa0
mlxsw_sp_acl_tcam_vchunk_migrate_one+0x16b/0x270
mlxsw_sp_acl_tcam_vregion_rehash_work+0xbe/0x510
process_one_work+0x151/0x370
Fixes:
|
||
|
Ido Schimmel
|
b4a3a89fff |
lib: objagg: Fix general protection fault
The library supports aggregation of objects into other objects only if
the parent object does not have a parent itself. That is, nesting is not
supported.
Aggregation happens in two cases: Without and with hints, where hints
are a pre-computed recommendation on how to aggregate the provided
objects.
Nesting is not possible in the first case due to a check that prevents
it, but in the second case there is no check because the assumption is
that nesting cannot happen when creating objects based on hints. The
violation of this assumption leads to various warnings and eventually to
a general protection fault [1].
Before fixing the root cause, error out when nesting happens and warn.
[1]
general protection fault, probably for non-canonical address 0xdead000000000d90: 0000 [#1] PREEMPT SMP PTI
CPU: 1 PID: 1083 Comm: kworker/1:9 Tainted: G W 6.9.0-rc6-custom-gd9b4f1cca7fb #7
Hardware name: Mellanox Technologies Ltd. MSN3700/VMOD0005, BIOS 5.11 01/06/2019
Workqueue: mlxsw_core mlxsw_sp_acl_tcam_vregion_rehash_work
RIP: 0010:mlxsw_sp_acl_erp_bf_insert+0x25/0x80
[...]
Call Trace:
<TASK>
mlxsw_sp_acl_atcam_entry_add+0x256/0x3c0
mlxsw_sp_acl_tcam_entry_create+0x5e/0xa0
mlxsw_sp_acl_tcam_vchunk_migrate_one+0x16b/0x270
mlxsw_sp_acl_tcam_vregion_rehash_work+0xbe/0x510
process_one_work+0x151/0x370
worker_thread+0x2cb/0x3e0
kthread+0xd0/0x100
ret_from_fork+0x34/0x50
ret_from_fork_asm+0x1a/0x30
</TASK>
Fixes:
|
||
|
Ido Schimmel
|
2aad28ec45 |
lib: test_objagg: Fix spelling
Fixes:
|
||
|
Ido Schimmel
|
c1e156ae50 |
lib: objagg: Fix spelling
Fixes:
|
||
|
Jeff Johnson
|
425ae3ab5a |
list: test: add the missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/list-test.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Jeff Johnson
|
a521746821 |
kunit: add missing MODULE_DESCRIPTION() macros to core modules
make allmodconfig && make W=1 C=1 reports in lib/kunit: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/kunit/kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/kunit/kunit-test.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/kunit/kunit-example-test.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Jeff Johnson
|
645211db13 |
crypto: lib - add missing MODULE_DESCRIPTION() macros
Fix the allmodconfig 'make W=1' warnings: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libchacha.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libarc4.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libdes.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/crypto/libpoly1305.o Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Linus Torvalds
|
d30d0e49da |
Including fixes from BPF and big collection of fixes for WiFi core
and drivers.
Current release - regressions:
- vxlan: fix regression when dropping packets due to invalid src addresses
- bpf: fix a potential use-after-free in bpf_link_free()
- xdp: revert support for redirect to any xsk socket bound to the same
UMEM as it can result in a corruption
- virtio_net:
- add missing lock protection when reading return code from control_buf
- fix false-positive lockdep splat in DIM
- Revert "wifi: wilc1000: convert list management to RCU"
- wifi: ath11k: fix error path in ath11k_pcic_ext_irq_config
Previous releases - regressions:
- rtnetlink: make the "split" NLM_DONE handling generic, restore the old
behavior for two cases where we started coalescing those messages with
normal messages, breaking sloppily-coded userspace
- wifi:
- cfg80211: validate HE operation element parsing
- cfg80211: fix 6 GHz scan request building
- mt76: mt7615: add missing chanctx ops
- ath11k: move power type check to ASSOC stage, fix connecting
to 6 GHz AP
- ath11k: fix WCN6750 firmware crash caused by 17 num_vdevs
- rtlwifi: ignore IEEE80211_CONF_CHANGE_RETRY_LIMITS
- iwlwifi: mvm: fix a crash on 7265
Previous releases - always broken:
- ncsi: prevent multi-threaded channel probing, a spec violation
- vmxnet3: disable rx data ring on dma allocation failure
- ethtool: init tsinfo stats if requested, prevent unintentionally
reporting all-zero stats on devices which don't implement any
- dst_cache: fix possible races in less common IPv6 features
- tcp: auth: don't consider TCP_CLOSE to be in TCP_AO_ESTABLISHED
- ax25: fix two refcounting bugs
- eth: ionic: fix kernel panic in XDP_TX action
Misc:
- tcp: count CLOSE-WAIT sockets for TCP_MIB_CURRESTAB
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from BPF and big collection of fixes for WiFi core and
drivers.
Current release - regressions:
- vxlan: fix regression when dropping packets due to invalid src
addresses
- bpf: fix a potential use-after-free in bpf_link_free()
- xdp: revert support for redirect to any xsk socket bound to the
same UMEM as it can result in a corruption
- virtio_net:
- add missing lock protection when reading return code from
control_buf
- fix false-positive lockdep splat in DIM
- Revert "wifi: wilc1000: convert list management to RCU"
- wifi: ath11k: fix error path in ath11k_pcic_ext_irq_config
Previous releases - regressions:
- rtnetlink: make the "split" NLM_DONE handling generic, restore the
old behavior for two cases where we started coalescing those
messages with normal messages, breaking sloppily-coded userspace
- wifi:
- cfg80211: validate HE operation element parsing
- cfg80211: fix 6 GHz scan request building
- mt76: mt7615: add missing chanctx ops
- ath11k: move power type check to ASSOC stage, fix connecting to
6 GHz AP
- ath11k: fix WCN6750 firmware crash caused by 17 num_vdevs
- rtlwifi: ignore IEEE80211_CONF_CHANGE_RETRY_LIMITS
- iwlwifi: mvm: fix a crash on 7265
Previous releases - always broken:
- ncsi: prevent multi-threaded channel probing, a spec violation
- vmxnet3: disable rx data ring on dma allocation failure
- ethtool: init tsinfo stats if requested, prevent unintentionally
reporting all-zero stats on devices which don't implement any
- dst_cache: fix possible races in less common IPv6 features
- tcp: auth: don't consider TCP_CLOSE to be in TCP_AO_ESTABLISHED
- ax25: fix two refcounting bugs
- eth: ionic: fix kernel panic in XDP_TX action
Misc:
- tcp: count CLOSE-WAIT sockets for TCP_MIB_CURRESTAB"
* tag 'net-6.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (107 commits)
selftests: net: lib: set 'i' as local
selftests: net: lib: avoid error removing empty netns name
selftests: net: lib: support errexit with busywait
net: ethtool: fix the error condition in ethtool_get_phy_stats_ethtool()
ipv6: fix possible race in __fib6_drop_pcpu_from()
af_unix: Annotate data-race of sk->sk_shutdown in sk_diag_fill().
af_unix: Use skb_queue_len_lockless() in sk_diag_show_rqlen().
af_unix: Use skb_queue_empty_lockless() in unix_release_sock().
af_unix: Use unix_recvq_full_lockless() in unix_stream_connect().
af_unix: Annotate data-race of net->unx.sysctl_max_dgram_qlen.
af_unix: Annotate data-races around sk->sk_sndbuf.
af_unix: Annotate data-races around sk->sk_state in UNIX_DIAG.
af_unix: Annotate data-race of sk->sk_state in unix_stream_read_skb().
af_unix: Annotate data-races around sk->sk_state in sendmsg() and recvmsg().
af_unix: Annotate data-race of sk->sk_state in unix_accept().
af_unix: Annotate data-race of sk->sk_state in unix_stream_connect().
af_unix: Annotate data-races around sk->sk_state in unix_write_space() and poll().
af_unix: Annotate data-race of sk->sk_state in unix_inq_len().
af_unix: Annodate data-races around sk->sk_state for writers.
af_unix: Set sk->sk_state under unix_state_lock() for truly disconencted peer.
...
|
||
|
Jean-Philippe Brucker
|
0ee1472547 |
mm/util: Swap kmemdup_array() arguments
GCC 14.1 complains about the argument usage of kmemdup_array():
drivers/soc/tegra/fuse/fuse-tegra.c:130:65: error: 'kmemdup_array' sizes specified with 'sizeof' in the earlier argument and not in the later argument [-Werror=calloc-transposed-args]
130 | fuse->lookups = kmemdup_array(fuse->soc->lookups, sizeof(*fuse->lookups),
| ^
drivers/soc/tegra/fuse/fuse-tegra.c:130:65: note: earlier argument should specify number of elements, later size of each element
The annotation introduced by commit
|
||
|
Jeff Johnson
|
0d618e3976 |
lib/math: add missing MODULE_DESCRIPTION() macros
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/math/prime_numbers.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/math/rational-test.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240531-md-lib-math-v1-1-11a3bec51ebb@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Jeff Johnson
|
5a71c0d118 |
dyndbg: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_dynamic_debug.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240531-md-test_dynamic_debug-v1-1-2194b477f55e@quicinc.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Jeff Johnson
|
c6cab01d7e |
lib/test_rhashtable: add missing MODULE_DESCRIPTION() macro
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_rhashtable.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Link: https://lore.kernel.org/r/20240531-md-lib-test_rhashtable-v1-1-cd6d4138f1b6@quicinc.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Dr. David Alan Gilbert
|
8031042cc5 |
list: test: remove unused struct 'klist_test_struct'
'klist_test_struct' has been unused since the original
commit
|
||
|
Jeff Johnson
|
ec1249d327 |
test_bpf: Add missing MODULE_DESCRIPTION()
make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_bpf.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20240531-md-lib-test_bpf-v1-1-868e4bd2f9ed@quicinc.com |
||
|
Kees Cook
|
99a6087dfd |
kunit/fortify: Remove __kmalloc_node() test
__kmalloc_node() is considered an "internal" function to the Slab, so drop it from explicit testing. Link: https://lore.kernel.org/r/20240531185703.work.588-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Ivan Orlov
|
2c7afc2a88 |
kunit: Cover 'assert.c' with tests
There are multiple assertion formatting functions in the `assert.c` file, which are not covered with tests yet. Implement the KUnit test for these functions. The test consists of 11 test cases for the following functions: 1) 'is_literal' 2) 'is_str_literal' 3) 'kunit_assert_prologue', test case for multiple assert types 4) 'kunit_assert_print_msg' 5) 'kunit_unary_assert_format' 6) 'kunit_ptr_not_err_assert_format' 7) 'kunit_binary_assert_format' 8) 'kunit_binary_ptr_assert_format' 9) 'kunit_binary_str_assert_format' 10) 'kunit_assert_hexdump' 11) 'kunit_mem_assert_format' The test aims at maximizing the branch coverage for the assertion formatting functions. As you can see, it covers some of the static helper functions as well, so mark the static functions in `assert.c` as 'VISIBLE_IF_KUNIT' and conditionally export them with EXPORT_SYMBOL_IF_KUNIT. Add the corresponding definitions to `assert.h`. Build the assert test when CONFIG_KUNIT_TEST is enabled, similar to how it is done for the string stream test. Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com> Reviewed-by: Rae Moar <rmoar@google.com> Acked-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Vlastimil Babka
|
a0a44d9175 |
mm, slab: don't wrap internal functions with alloc_hooks()
The functions __kmalloc_noprof(), kmalloc_large_noprof(), kmalloc_trace_noprof() and their _node variants are all internal to the implementations of kmalloc_noprof() and kmalloc_node_noprof() and are only declared in the "public" slab.h and exported so that those implementations can be static inline and distinguish the build-time constant size variants. The only other users for some of the internal functions are slub_kunit and fortify_kunit tests which make very short-lived allocations. Therefore we can stop wrapping them with the alloc_hooks() macro. Instead add a __ prefix to all of them and a comment documenting these as internal. Also rename __kmalloc_trace() to __kmalloc_cache() which is more descriptive - it is a variant of __kmalloc() where the exact kmalloc cache has been already determined. The usage in fortify_kunit can be removed completely, as the internal functions should be tested already through kmalloc() tests in the test variant that passes non-constant allocation size. Reported-by: Kent Overstreet <kent.overstreet@linux.dev> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Kees Cook <keescook@chromium.org> Reviewed-by: Kent Overstreet <kent.overstreet@linux.dev> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Vlastimil Babka <vbabka@suse.cz> |
||
|
Maxime Ripard
|
375c4d1583
|
Merge drm/drm-next into drm-misc-next
Let's start the new release cycle. Signed-off-by: Maxime Ripard <mripard@kernel.org> |
||
|
Linus Torvalds
|
9b62e02e63 |
16 hotfixes, 11 of which are cc:stable.
A few nilfs2 fixes, the remainder are for MM: a couple of selftests fixes, various singletons fixing various issues in various parts. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZlIOUgAKCRDdBJ7gKXxA jrYnAP9UeOw8YchTIsjEllmAbTMAqWGI+54CU/qD78jdIHoVWAEAmp0QqgFW3r2p jze4jBkh3lGQjykTjkUskaR71h9AZww= =AHeV -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2024-05-25-09-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "16 hotfixes, 11 of which are cc:stable. A few nilfs2 fixes, the remainder are for MM: a couple of selftests fixes, various singletons fixing various issues in various parts" * tag 'mm-hotfixes-stable-2024-05-25-09-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm/ksm: fix possible UAF of stable_node mm/memory-failure: fix handling of dissolved but not taken off from buddy pages mm: /proc/pid/smaps_rollup: avoid skipping vma after getting mmap_lock again nilfs2: fix potential hang in nilfs_detach_log_writer() nilfs2: fix unexpected freezing of nilfs_segctor_sync() nilfs2: fix use-after-free of timer for log writer thread selftests/mm: fix build warnings on ppc64 arm64: patching: fix handling of execmem addresses selftests/mm: compaction_test: fix bogus test success and reduce probability of OOM-killer invocation selftests/mm: compaction_test: fix incorrect write of zero to nr_hugepages selftests/mm: compaction_test: fix bogus test success on Aarch64 mailmap: update email address for Satya Priya mm/huge_memory: don't unpoison huge_zero_folio kasan, fortify: properly rename memintrinsics lib: add version into /proc/allocinfo output mm/vmalloc: fix vmalloc which may return null if called with __GFP_NOFAIL |
||
|
Suren Baghdasaryan
|
a38568a0b4 |
lib: add version into /proc/allocinfo output
Add version string and a header at the beginning of /proc/allocinfo to
allow later format changes. Example output:
> head /proc/allocinfo
allocinfo - version: 1.0
# <size> <calls> <tag info>
0 0 init/main.c:1314 func:do_initcalls
0 0 init/do_mounts.c:353 func:mount_nodev_root
0 0 init/do_mounts.c:187 func:mount_root_generic
0 0 init/do_mounts.c:158 func:do_mount_root
0 0 init/initramfs.c:493 func:unpack_to_rootfs
0 0 init/initramfs.c:492 func:unpack_to_rootfs
0 0 init/initramfs.c:491 func:unpack_to_rootfs
512 1 arch/x86/events/rapl.c:681 func:init_rapl_pmus
128 1 arch/x86/events/rapl.c:571 func:rapl_cpu_online
[akpm@linux-foundation.org: remove stray newline from struct allocinfo_private]
Link: https://lkml.kernel.org/r/20240514163128.3662251-1-surenb@google.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Linus Torvalds
|
b0a9ba13ff |
hardening fixes for v6.10-rc1
- loadpin: Prevent SECURITY_LOADPIN_ENFORCE=y without module decompression (Stephen Boyd) - ubsan: Restore dependency on ARCH_HAS_UBSAN - kunit/fortify: Fix memcmp() test to be amplitude agnostic -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmZP0w0WHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJqYDEACWaY0Xjig6Izo+B+85IozTLf2R Wv3zlOjUhjbRn7enzhVBRRfU216nl/wp8s7pKhNYCEZ7gJ+04hYtZoLY6YV7jtZ0 RAvpwc1dmUm7RZIBxjnzqiNTdttNBniPDE47goV0Yi9JVSDFY1Y/P5GwiAr0PO6W kt1+WBr2zADNpTZziH8MZou7jfK+y1bOZw8rUUFMODrMc0buuLGO2h+lZqASJXNs 5NHPUOoJsZHvQxN/YSyE555VycpoyWiwMvA1XOz1NVKdr1eFP1heu88AnIRKOD7o cMz6W/yUZ+4dYr2yydDGNX+QvFmZuvPz0oXAlI7BAblpT0UU7xv0jaioAhIam87U WxVQSOgkLQBw6Ym79W66HplizCVfEl9aUAYDSK5UJlwdpNE/j16XLYDLKxDi0wUZ pjUy5CF0X7FFNyY7Kp5flqzKrQG31vfqZf/yWhtWu258x604LR6CTkO06IJDINx0 UUrbehie3bGnbu5FS0oVKGH37Mq0aRn4Xk2aUZaFf1Vz/YtU4Wo3FbtyOyFZsdpl aCNyYzmNmfVijDQlLshy6HBACeLPV2DjIJ8pcC74abUV1FX6VOvIDsTy4ELkm9BF WZ8LNryo79lFsFMThhwfCDHubhXoaLjkl4rpOB5x+Ld0q+GgfIb5jMfF507YxrRj 3KxJJKXzUKNf+JFnjg== =VTTF -----END PGP SIGNATURE----- Merge tag 'hardening-v6.10-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening fixes from Kees Cook: - loadpin: Prevent SECURITY_LOADPIN_ENFORCE=y without module decompression (Stephen Boyd) - ubsan: Restore dependency on ARCH_HAS_UBSAN - kunit/fortify: Fix memcmp() test to be amplitude agnostic * tag 'hardening-v6.10-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: kunit/fortify: Fix memcmp() test to be amplitude agnostic ubsan: Restore dependency on ARCH_HAS_UBSAN loadpin: Prevent SECURITY_LOADPIN_ENFORCE=y without module decompression |
||
|
Linus Torvalds
|
c760b3725e |
- A series ("kbuild: enable more warnings by default") from Arnd
Bergmann which enables a number of additional build-time warnings. We
fixed all the fallout which we could find, there may still be a few
stragglers.
- Samuel Holland has developed the series "Unified cross-architecture
kernel-mode FPU API". This does a lot of consolidation of
per-architecture kernel-mode FPU usage and enables the use of newer AMD
GPUs on RISC-V.
- Tao Su has fixed some selftests build warnings in the series
"Selftests: Fix compilation warnings due to missing _GNU_SOURCE
definition".
- This pull also includes a nilfs2 fixup from Ryusuke Konishi.
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Merge tag 'mm-nonmm-stable-2024-05-22-17-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more non-mm updates from Andrew Morton:
- A series ("kbuild: enable more warnings by default") from Arnd
Bergmann which enables a number of additional build-time warnings. We
fixed all the fallout which we could find, there may still be a few
stragglers.
- Samuel Holland has developed the series "Unified cross-architecture
kernel-mode FPU API". This does a lot of consolidation of
per-architecture kernel-mode FPU usage and enables the use of newer
AMD GPUs on RISC-V.
- Tao Su has fixed some selftests build warnings in the series
"Selftests: Fix compilation warnings due to missing _GNU_SOURCE
definition".
- This pull also includes a nilfs2 fixup from Ryusuke Konishi.
* tag 'mm-nonmm-stable-2024-05-22-17-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (23 commits)
nilfs2: make block erasure safe in nilfs_finish_roll_forward()
selftests/harness: use 1024 in place of LINE_MAX
Revert "selftests/harness: remove use of LINE_MAX"
selftests/fpu: allow building on other architectures
selftests/fpu: move FP code to a separate translation unit
drm/amd/display: use ARCH_HAS_KERNEL_FPU_SUPPORT
drm/amd/display: only use hard-float, not altivec on powerpc
riscv: add support for kernel-mode FPU
x86: implement ARCH_HAS_KERNEL_FPU_SUPPORT
powerpc: implement ARCH_HAS_KERNEL_FPU_SUPPORT
LoongArch: implement ARCH_HAS_KERNEL_FPU_SUPPORT
lib/raid6: use CC_FLAGS_FPU for NEON CFLAGS
arm64: crypto: use CC_FLAGS_FPU for NEON CFLAGS
arm64: implement ARCH_HAS_KERNEL_FPU_SUPPORT
ARM: crypto: use CC_FLAGS_FPU for NEON CFLAGS
ARM: implement ARCH_HAS_KERNEL_FPU_SUPPORT
arch: add ARCH_HAS_KERNEL_FPU_SUPPORT
x86/fpu: fix asm/fpu/types.h include guard
kbuild: enable -Wcast-function-type-strict unconditionally
kbuild: enable -Wformat-truncation on clang
...
|
||
|
Linus Torvalds
|
5c6f4d68e2 |
A series from Dave Chinner which cleans up and fixes the handling of
nested allocations within stackdepot and page-owner. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZk6MRwAKCRDdBJ7gKXxA jnzeAP9WHW425N7pWmE7rK7n8oXZK9f356dKJMtz2A35Bx6XJgEAuK86kDRA4Kv3 kg8mtwzOIQYKZWzn5VlcvBbtlhjKGwM= =9/Ou -----END PGP SIGNATURE----- Merge tag 'mm-stable-2024-05-22-17-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull more mm updates from Andrew Morton: "A series from Dave Chinner which cleans up and fixes the handling of nested allocations within stackdepot and page-owner" * tag 'mm-stable-2024-05-22-17-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm/page-owner: use gfp_nested_mask() instead of open coded masking stackdepot: use gfp_nested_mask() instead of open coded masking mm: lift gfp_kmemleak_mask() to gfp.h |
||
|
Linus Torvalds
|
f6b8e86b7a |
TTY/Serial changes for 6.10-rc1
Here is the big set of tty/serial driver changes for 6.10-rc1. Included
in here are:
- Usual good set of api cleanups and evolution by Jiri Slaby to make
the serial interfaces move out of the 1990's by using kfifos instead
of hand-rolling their own logic.
- 8250_exar driver updates
- max3100 driver updates
- sc16is7xx driver updates
- exar driver updates
- sh-sci driver updates
- tty ldisc api addition to help refuse bindings
- other smaller serial driver updates
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty / serial updates from Greg KH:
"Here is the big set of tty/serial driver changes for 6.10-rc1.
Included in here are:
- Usual good set of api cleanups and evolution by Jiri Slaby to make
the serial interfaces move out of the 1990's by using kfifos
instead of hand-rolling their own logic.
- 8250_exar driver updates
- max3100 driver updates
- sc16is7xx driver updates
- exar driver updates
- sh-sci driver updates
- tty ldisc api addition to help refuse bindings
- other smaller serial driver updates
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (113 commits)
serial: Clear UPF_DEAD before calling tty_port_register_device_attr_serdev()
serial: imx: Raise TX trigger level to 8
serial: 8250_pnp: Simplify "line" related code
serial: sh-sci: simplify locking when re-issuing RXDMA fails
serial: sh-sci: let timeout timer only run when DMA is scheduled
serial: sh-sci: describe locking requirements for invalidating RXDMA
serial: sh-sci: protect invalidating RXDMA on shutdown
tty: add the option to have a tty reject a new ldisc
serial: core: Call device_set_awake_path() for console port
dt-bindings: serial: brcm,bcm2835-aux-uart: convert to dtschema
tty: serial: uartps: Add support for uartps controller reset
arm64: zynqmp: Add resets property for UART nodes
dt-bindings: serial: cdns,uart: Add optional reset property
serial: 8250_pnp: Switch to DEFINE_SIMPLE_DEV_PM_OPS()
serial: 8250_exar: Keep the includes sorted
serial: 8250_exar: Make type of bit the same in exar_ee_*_bit()
serial: 8250_exar: Use BIT() in exar_ee_read()
serial: 8250_exar: Switch to use dev_err_probe()
serial: 8250_exar: Return directly from switch-cases
serial: 8250_exar: Decrease indentation level
...
|
||
|
Linus Torvalds
|
4865a27c66 |
bitmap patches for 6.10
Hi Linus,
Please pull patches for 6.10. This includes:
- topology_span_sane() optimization from Kyle Meyer;
- fns() rework from Kuan-Wei Chiu (used in
cpumask_local_spread() and other places); and
- headers cleanup from Andy.
This also adds a MAINTAINERS record for bitops API as it's unattended,
and I'd like to follow it closer.
Thanks,
Yury
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Merge tag 'bitmap-for-6.10v2' of https://github.com/norov/linux
Pull bitmap updates from Yury Norov:
- topology_span_sane() optimization from Kyle Meyer
- fns() rework from Kuan-Wei Chiu (used in cpumask_local_spread() and
other places)
- headers cleanup from Andy
- add a MAINTAINERS record for bitops API
* tag 'bitmap-for-6.10v2' of https://github.com/norov/linux:
usercopy: Don't use "proxy" headers
bitops: Move aligned_byte_mask() to wordpart.h
MAINTAINERS: add BITOPS API record
bitmap: relax find_nth_bit() limitation on return value
lib: make test_bitops compilable into the kernel image
bitops: Optimize fns() for improved performance
lib/test_bitops: Add benchmark test for fns()
Compiler Attributes: Add __always_used macro
sched/topology: Optimize topology_span_sane()
cpumask: Add for_each_cpu_from()
|
||
|
Linus Torvalds
|
3413efa888 |
Compactifying bdev flags
We can easily have up to 24 flags with sane atomicity, _without_ pushing anything out of the first cacheline of struct block_device. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQQqUNBr3gm4hGXdBJlZ7Krx/gZQ6wUCZkznRwAKCRBZ7Krx/gZQ 69XpAQDOZCyvYOZ/dlMOKKLf2vAojC/h++E/NjvGt3erbvVN2wEArXMi13ECsoCw JYJA3MsmvjuY6VNcm24icf2/p4TMIgo= =JyYi -----END PGP SIGNATURE----- Merge tag 'pull-bd_flags-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull bdev flags update from Al Viro: "Compactifying bdev flags. We can easily have up to 24 flags with sane atomicity, _without_ pushing anything out of the first cacheline of struct block_device" * tag 'pull-bd_flags-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: bdev: move ->bd_make_it_fail to ->__bd_flags bdev: move ->bd_ro_warned to ->__bd_flags bdev: move ->bd_has_subit_bio to ->__bd_flags bdev: move ->bd_write_holder into ->__bd_flags bdev: move ->bd_read_only to ->__bd_flags bdev: infrastructure for flags wrapper for access to ->bd_partno Use bdev_is_paritition() instead of open-coding it |
||
|
Andy Shevchenko
|
5671dca241 |
usercopy: Don't use "proxy" headers
Update header inclusions to follow IWYU (Include What You Use) principle. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
||
|
Andy Shevchenko
|
9f2c2d6ba1 |
bitops: Move aligned_byte_mask() to wordpart.h
The bitops.h is for bit related operations. The aligned_byte_mask() is about byte (or part of the machine word) operations, for which we have a separate header, move the mentioned macro to wordpart.h to consolidate similar operations. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
||
|
Dave Chinner
|
70c435ca8d |
stackdepot: use gfp_nested_mask() instead of open coded masking
The stackdepot code is used by KASAN and lockdep for recoding stack traces. Both of these track allocation context information, and so their internal allocations must obey the caller allocation contexts to avoid generating their own false positive warnings that have nothing to do with the code they are instrumenting/tracking. We also don't want recording stack traces to deplete emergency memory reserves - debug code is useless if it creates new issues that can't be replicated when the debug code is disabled. Switch the stackdepot allocation masking to use gfp_nested_mask() to address these issues. gfp_nested_mask() also strips GFP_ZONEMASK naturally, so that greatly simplifies this code. Link: https://lkml.kernel.org/r/20240430054604.4169568-3-david@fromorbit.com Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Marco Elver <elver@google.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Oscar Salvador <osalvador@suse.de> Cc: Andrey Konovalov <andreyknvl@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Samuel Holland
|
790a4a3dd1 |
selftests/fpu: allow building on other architectures
Now that ARCH_HAS_KERNEL_FPU_SUPPORT provides a common way to compile and run floating-point code, this test is no longer x86-specific. Link: https://lkml.kernel.org/r/20240329072441.591471-16-samuel.holland@sifive.com Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian König <christian.koenig@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Borislav Petkov (AMD) <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Palmer Dabbelt <palmer@rivosinc.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: WANG Xuerui <git@xen0n.name> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Samuel Holland
|
9613736d85 |
selftests/fpu: move FP code to a separate translation unit
This ensures no compiler-generated floating-point code can appear outside
kernel_fpu_{begin,end}() sections, and some architectures enforce this
separation.
Link: https://lkml.kernel.org/r/20240329072441.591471-15-samuel.holland@sifive.com
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: WANG Xuerui <git@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Samuel Holland
|
4be073931c |
lib/raid6: use CC_FLAGS_FPU for NEON CFLAGS
Now that CC_FLAGS_FPU is exported and can be used anywhere in the source tree, use it instead of duplicating the flags here. Link: https://lkml.kernel.org/r/20240329072441.591471-7-samuel.holland@sifive.com Signed-off-by: Samuel Holland <samuel.holland@sifive.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian König <christian.koenig@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Borislav Petkov (AMD) <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Palmer Dabbelt <palmer@rivosinc.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: WANG Xuerui <git@xen0n.name> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
eb6a9339ef |
Mainly singleton patches, documented in their respective changelogs.
Notable series include:
- Some maintenance and performance work for ocfs2 in Heming Zhao's
series "improve write IO performance when fragmentation is high".
- Some ocfs2 bugfixes from Su Yue in the series "ocfs2 bugs fixes
exposed by fstests".
- kfifo header rework from Andy Shevchenko in the series "kfifo: Clean
up kfifo.h".
- GDB script fixes from Florian Rommel in the series "scripts/gdb: Fixes
for $lx_current and $lx_per_cpu".
- After much discussion, a coding-style update from Barry Song
explaining one reason why inline functions are preferred over macros.
The series is "codingstyle: avoid unused parameters for a function-like
macro".
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Merge tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-mm updates from Andrew Morton:
"Mainly singleton patches, documented in their respective changelogs.
Notable series include:
- Some maintenance and performance work for ocfs2 in Heming Zhao's
series "improve write IO performance when fragmentation is high".
- Some ocfs2 bugfixes from Su Yue in the series "ocfs2 bugs fixes
exposed by fstests".
- kfifo header rework from Andy Shevchenko in the series "kfifo:
Clean up kfifo.h".
- GDB script fixes from Florian Rommel in the series "scripts/gdb:
Fixes for $lx_current and $lx_per_cpu".
- After much discussion, a coding-style update from Barry Song
explaining one reason why inline functions are preferred over
macros. The series is "codingstyle: avoid unused parameters for a
function-like macro""
* tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (62 commits)
fs/proc: fix softlockup in __read_vmcore
nilfs2: convert BUG_ON() in nilfs_finish_roll_forward() to WARN_ON()
scripts: checkpatch: check unused parameters for function-like macro
Documentation: coding-style: ask function-like macros to evaluate parameters
nilfs2: use __field_struct() for a bitwise field
selftests/kcmp: remove unused open mode
nilfs2: remove calls to folio_set_error() and folio_clear_error()
kernel/watchdog_perf.c: tidy up kerneldoc
watchdog: allow nmi watchdog to use raw perf event
watchdog: handle comma separated nmi_watchdog command line
nilfs2: make superblock data array index computation sparse friendly
squashfs: remove calls to set the folio error flag
squashfs: convert squashfs_symlink_read_folio to use folio APIs
scripts/gdb: fix detection of current CPU in KGDB
scripts/gdb: make get_thread_info accept pointers
scripts/gdb: fix parameter handling in $lx_per_cpu
scripts/gdb: fix failing KGDB detection during probe
kfifo: don't use "proxy" headers
media: stih-cec: add missing io.h
media: rc: add missing io.h
...
|
||
|
Linus Torvalds
|
16dbfae867 |
bcachefs changes for 6.10-rc1
- More safety fixes, primarily found by syzbot - Run the upgrade/downgrade paths in nochnages mode. Nochanges mode is primarily for testing fsck/recovery in dry run mode, so it shouldn't change anything besides disabling writes and holding dirty metadata in memory. The idea here was to reduce the amount of activity if we can't write anything out, so that bringing up a filesystem in "super ro" mode would be more lilkely to work for data recovery - but norecovery is the correct option for this. - btree_trans->locked; we now track whether a btree_trans has any btree nodes locked, and this is used for improved assertions related to trans_unlock() and trans_relock(). We'll also be using it for improving how we work with lockdep in the future: we don't want lockdep to be tracking individual btree node locks because we take too many for lockdep to track, and it's not necessary since we have a cycle detector. - Trigger improvements that are prep work for online fsck - BTREE_TRIGGER_check_repair; this regularizes how we do some repair work for extents that goes with running triggers in fsck, and fixes some subtle issues with transaction restarts there. - bch2_snapshot_equiv() has now been ripped out of fsck.c; snapshot equivalence classes are for when snapshot deletion leaves behind redundant snapshot nodes, but snapshot deletion now cleans this up right away, so the abstraction doesn't need to leak. - Improvements to how we resume writing to the journal in recovery. The code for picking the new place to write when reading the journal is greatly simplified and we also store the position in the superblock for when we don't read the journal; this means that we preserve more of the journal for list_journal debugging. - Improvements to sysfs btree_cache and btree_node_cache, for debugging memory reclaim. - We now detect when we've blocked for 10 seconds on the allocator in the write path and dump some useful info. - Safety fixes for devices references: this is a big series that changes almost all device lookups to properly check if the device exists and take a reference to it. Previously we assumed that if a bkey exists that references a device then the device must exist, and this was enforced in .invalid methods, but this was incorrect because it meant device removal relied on accounting being correct to not leave keys pointing to invalid devices, and that's not something we can assume. Getting the "pointer to invalid device" checks out of our .invalid() methods fixes some long standing device removal bugs; the only outstanding bug with device removal now is a race between the discard path and deleting alloc info, which should be easily fixed. - The allocator now prefers not to expand the new member_info.btree_allocated bitmap, meaning if repair ever requires scanning for btree nodes (because of a corrupt interior nodes) we won't have to scan the whole device(s). - New coding style document, which among other things talks about the correct usage of assertions -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKnAFLkS8Qha+jvQrE6szbY3KbnYFAmZKJQgACgkQE6szbY3K bnZETg//SU9H0OHnBSMB/cteF6PKo9QR+dhT+3n+gWTxl0o/egbGTqwbzVqGtd2f J6II1BsDk8VoTOb/gFfLRShlmJfnj2jpRThU265faR/7LQYeSaqndDPkjOpTayAD Nj/DJyiSUTL753rZh3yUhOpOIHf7iapH6wuaZCPfhdfk+yvZNW8iz07JHjHLKRp8 I2cFH0r6kN916NdRkt9oDCz68WouT8eWTqwcKra04XsLEZjNJHxLpKMq4M8UdPc7 YynJPVt+aP8+VduGIq6pV8Co3afCP2oUywo11JpRmvLsw4tex/59wxOYtpMfgn6k 4H+9WqiBwkbmnLDrfFHWRameS6F/7+GRAOVuz9nkmfk61UPU15gLjSRffqZ6u2YC 7vbrXgebId/sZXtBpQd83RMMX52BnEJah0upNJ54IsSqfDYkU9lwl6CEyYpcX1hf YNBGBTbspZztc3AB13b3ow421FMhaySUg0FDmntMR9O8Z6/BXk7Ykc7b8DPEfrFs W6JY7q+ARBxr+EgFcV74fvMCf7NJTAhyv80AKryo7NFU2JZOyyaTxcTGSnolX4Mi lyHiOgicmOX+vy3vbC1dZoDcmIDJ4Uc0vixYcpKiZqxlR8XJ+wpevC50TEhxrcW+ ZO4SloQvgyjI34xu/gZgjRYb3BhXK3x+ougVFpRG8V8zQ/+ccWg= =MKrF -----END PGP SIGNATURE----- Merge tag 'bcachefs-2024-05-19' of https://evilpiepirate.org/git/bcachefs Pull bcachefs updates from Kent Overstreet: - More safety fixes, primarily found by syzbot - Run the upgrade/downgrade paths in nochnages mode. Nochanges mode is primarily for testing fsck/recovery in dry run mode, so it shouldn't change anything besides disabling writes and holding dirty metadata in memory. The idea here was to reduce the amount of activity if we can't write anything out, so that bringing up a filesystem in "super ro" mode would be more lilkely to work for data recovery - but norecovery is the correct option for this. - btree_trans->locked; we now track whether a btree_trans has any btree nodes locked, and this is used for improved assertions related to trans_unlock() and trans_relock(). We'll also be using it for improving how we work with lockdep in the future: we don't want lockdep to be tracking individual btree node locks because we take too many for lockdep to track, and it's not necessary since we have a cycle detector. - Trigger improvements that are prep work for online fsck - BTREE_TRIGGER_check_repair; this regularizes how we do some repair work for extents that goes with running triggers in fsck, and fixes some subtle issues with transaction restarts there. - bch2_snapshot_equiv() has now been ripped out of fsck.c; snapshot equivalence classes are for when snapshot deletion leaves behind redundant snapshot nodes, but snapshot deletion now cleans this up right away, so the abstraction doesn't need to leak. - Improvements to how we resume writing to the journal in recovery. The code for picking the new place to write when reading the journal is greatly simplified and we also store the position in the superblock for when we don't read the journal; this means that we preserve more of the journal for list_journal debugging. - Improvements to sysfs btree_cache and btree_node_cache, for debugging memory reclaim. - We now detect when we've blocked for 10 seconds on the allocator in the write path and dump some useful info. - Safety fixes for devices references: this is a big series that changes almost all device lookups to properly check if the device exists and take a reference to it. Previously we assumed that if a bkey exists that references a device then the device must exist, and this was enforced in .invalid methods, but this was incorrect because it meant device removal relied on accounting being correct to not leave keys pointing to invalid devices, and that's not something we can assume. Getting the "pointer to invalid device" checks out of our .invalid() methods fixes some long standing device removal bugs; the only outstanding bug with device removal now is a race between the discard path and deleting alloc info, which should be easily fixed. - The allocator now prefers not to expand the new member_info.btree_allocated bitmap, meaning if repair ever requires scanning for btree nodes (because of a corrupt interior nodes) we won't have to scan the whole device(s). - New coding style document, which among other things talks about the correct usage of assertions * tag 'bcachefs-2024-05-19' of https://evilpiepirate.org/git/bcachefs: (155 commits) bcachefs: add no_invalid_checks flag bcachefs: add counters for failed shrinker reclaim bcachefs: Fix sb_field_downgrade validation bcachefs: Plumb bch_validate_flags to sb_field_ops.validate() bcachefs: s/bkey_invalid_flags/bch_validate_flags bcachefs: fsync() should not return -EROFS bcachefs: Invalid devices are now checked for by fsck, not .invalid methods bcachefs: kill bch2_dev_bkey_exists() in bch2_check_fix_ptrs() bcachefs: kill bch2_dev_bkey_exists() in bch2_read_endio() bcachefs: bch2_dev_get_ioref() checks for device not present bcachefs: bch2_dev_get_ioref2(); io_read.c bcachefs: bch2_dev_get_ioref2(); debug.c bcachefs: bch2_dev_get_ioref2(); journal_io.c bcachefs: bch2_dev_get_ioref2(); io_write.c bcachefs: bch2_dev_get_ioref2(); btree_io.c bcachefs: bch2_dev_get_ioref2(); backpointers.c bcachefs: bch2_dev_get_ioref2(); alloc_background.c bcachefs: for_each_bset() declares loop iter bcachefs: Move BCACHEFS_STATFS_MAGIC value to UAPI magic.h bcachefs: Improve sysfs internal/btree_cache ... |
||
|
Linus Torvalds
|
61307b7be4 |
The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs. Notable
series include:
- Lucas Stach has provided some page-mapping
cleanup/consolidation/maintainability work in the series "mm/treewide:
Remove pXd_huge() API".
- In the series "Allow migrate on protnone reference with
MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
MPOL_PREFERRED_MANY mode, yielding almost doubled performance in one
test.
- In their series "Memory allocation profiling" Kent Overstreet and
Suren Baghdasaryan have contributed a means of determining (via
/proc/allocinfo) whereabouts in the kernel memory is being allocated:
number of calls and amount of memory.
- Matthew Wilcox has provided the series "Various significant MM
patches" which does a number of rather unrelated things, but in largely
similar code sites.
- In his series "mm: page_alloc: freelist migratetype hygiene" Johannes
Weiner has fixed the page allocator's handling of migratetype requests,
with resulting improvements in compaction efficiency.
- In the series "make the hugetlb migration strategy consistent" Baolin
Wang has fixed a hugetlb migration issue, which should improve hugetlb
allocation reliability.
- Liu Shixin has hit an I/O meltdown caused by readahead in a
memory-tight memcg. Addressed in the series "Fix I/O high when memory
almost met memcg limit".
- In the series "mm/filemap: optimize folio adding and splitting" Kairui
Song has optimized pagecache insertion, yielding ~10% performance
improvement in one test.
- Baoquan He has cleaned up and consolidated the early zone
initialization code in the series "mm/mm_init.c: refactor
free_area_init_core()".
- Baoquan has also redone some MM initializatio code in the series
"mm/init: minor clean up and improvement".
- MM helper cleanups from Christoph Hellwig in his series "remove
follow_pfn".
- More cleanups from Matthew Wilcox in the series "Various page->flags
cleanups".
- Vlastimil Babka has contributed maintainability improvements in the
series "memcg_kmem hooks refactoring".
- More folio conversions and cleanups in Matthew Wilcox's series
"Convert huge_zero_page to huge_zero_folio"
"khugepaged folio conversions"
"Remove page_idle and page_young wrappers"
"Use folio APIs in procfs"
"Clean up __folio_put()"
"Some cleanups for memory-failure"
"Remove page_mapping()"
"More folio compat code removal"
- David Hildenbrand chipped in with "fs/proc/task_mmu: convert hugetlb
functions to work on folis".
- Code consolidation and cleanup work related to GUP's handling of
hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".
- Rick Edgecombe has developed some fixes to stack guard gaps in the
series "Cover a guard gap corner case".
- Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the series
"mm/ksm: fix ksm exec support for prctl".
- Baolin Wang has implemented NUMA balancing for multi-size THPs. This
is a simple first-cut implementation for now. The series is "support
multi-size THP numa balancing".
- Cleanups to vma handling helper functions from Matthew Wilcox in the
series "Unify vma_address and vma_pgoff_address".
- Some selftests maintenance work from Dev Jain in the series
"selftests/mm: mremap_test: Optimizations and style fixes".
- Improvements to the swapping of multi-size THPs from Ryan Roberts in
the series "Swap-out mTHP without splitting".
- Kefeng Wang has significantly optimized the handling of arm64's
permission page faults in the series
"arch/mm/fault: accelerate pagefault when badaccess"
"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"
- GUP cleanups from David Hildenbrand in "mm/gup: consistently call it
GUP-fast".
- hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault path to
use struct vm_fault".
- selftests build fixes from John Hubbard in the series "Fix
selftests/mm build without requiring "make headers"".
- Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
series "Improved Memory Tier Creation for CPUless NUMA Nodes". Fixes
the initialization code so that migration between different memory types
works as intended.
- David Hildenbrand has improved follow_pte() and fixed an errant driver
in the series "mm: follow_pte() improvements and acrn follow_pte()
fixes".
- David also did some cleanup work on large folio mapcounts in his
series "mm: mapcount for large folios + page_mapcount() cleanups".
- Folio conversions in KSM in Alex Shi's series "transfer page to folio
in KSM".
- Barry Song has added some sysfs stats for monitoring multi-size THP's
in the series "mm: add per-order mTHP alloc and swpout counters".
- Some zswap cleanups from Yosry Ahmed in the series "zswap same-filled
and limit checking cleanups".
- Matthew Wilcox has been looking at buffer_head code and found the
documentation to be lacking. The series is "Improve buffer head
documentation".
- Multi-size THPs get more work, this time from Lance Yang. His series
"mm/madvise: enhance lazyfreeing with mTHP in madvise_free" optimizes
the freeing of these things.
- Kemeng Shi has added more userspace-visible writeback instrumentation
in the series "Improve visibility of writeback".
- Kemeng Shi then sent some maintenance work on top in the series "Fix
and cleanups to page-writeback".
- Matthew Wilcox reduces mmap_lock traffic in the anon vma code in the
series "Improve anon_vma scalability for anon VMAs". Intel's test bot
reported an improbable 3x improvement in one test.
- SeongJae Park adds some DAMON feature work in the series
"mm/damon: add a DAMOS filter type for page granularity access recheck"
"selftests/damon: add DAMOS quota goal test"
- Also some maintenance work in the series
"mm/damon/paddr: simplify page level access re-check for pageout"
"mm/damon: misc fixes and improvements"
- David Hildenbrand has disabled some known-to-fail selftests ni the
series "selftests: mm: cow: flag vmsplice() hugetlb tests as XFAIL".
- memcg metadata storage optimizations from Shakeel Butt in "memcg:
reduce memory consumption by memcg stats".
- DAX fixes and maintenance work from Vishal Verma in the series
"dax/bus.c: Fixups for dax-bus locking".
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Merge tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull mm updates from Andrew Morton:
"The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs.
Notable series include:
- Lucas Stach has provided some page-mapping cleanup/consolidation/
maintainability work in the series "mm/treewide: Remove pXd_huge()
API".
- In the series "Allow migrate on protnone reference with
MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
MPOL_PREFERRED_MANY mode, yielding almost doubled performance in
one test.
- In their series "Memory allocation profiling" Kent Overstreet and
Suren Baghdasaryan have contributed a means of determining (via
/proc/allocinfo) whereabouts in the kernel memory is being
allocated: number of calls and amount of memory.
- Matthew Wilcox has provided the series "Various significant MM
patches" which does a number of rather unrelated things, but in
largely similar code sites.
- In his series "mm: page_alloc: freelist migratetype hygiene"
Johannes Weiner has fixed the page allocator's handling of
migratetype requests, with resulting improvements in compaction
efficiency.
- In the series "make the hugetlb migration strategy consistent"
Baolin Wang has fixed a hugetlb migration issue, which should
improve hugetlb allocation reliability.
- Liu Shixin has hit an I/O meltdown caused by readahead in a
memory-tight memcg. Addressed in the series "Fix I/O high when
memory almost met memcg limit".
- In the series "mm/filemap: optimize folio adding and splitting"
Kairui Song has optimized pagecache insertion, yielding ~10%
performance improvement in one test.
- Baoquan He has cleaned up and consolidated the early zone
initialization code in the series "mm/mm_init.c: refactor
free_area_init_core()".
- Baoquan has also redone some MM initializatio code in the series
"mm/init: minor clean up and improvement".
- MM helper cleanups from Christoph Hellwig in his series "remove
follow_pfn".
- More cleanups from Matthew Wilcox in the series "Various
page->flags cleanups".
- Vlastimil Babka has contributed maintainability improvements in the
series "memcg_kmem hooks refactoring".
- More folio conversions and cleanups in Matthew Wilcox's series:
"Convert huge_zero_page to huge_zero_folio"
"khugepaged folio conversions"
"Remove page_idle and page_young wrappers"
"Use folio APIs in procfs"
"Clean up __folio_put()"
"Some cleanups for memory-failure"
"Remove page_mapping()"
"More folio compat code removal"
- David Hildenbrand chipped in with "fs/proc/task_mmu: convert
hugetlb functions to work on folis".
- Code consolidation and cleanup work related to GUP's handling of
hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".
- Rick Edgecombe has developed some fixes to stack guard gaps in the
series "Cover a guard gap corner case".
- Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the
series "mm/ksm: fix ksm exec support for prctl".
- Baolin Wang has implemented NUMA balancing for multi-size THPs.
This is a simple first-cut implementation for now. The series is
"support multi-size THP numa balancing".
- Cleanups to vma handling helper functions from Matthew Wilcox in
the series "Unify vma_address and vma_pgoff_address".
- Some selftests maintenance work from Dev Jain in the series
"selftests/mm: mremap_test: Optimizations and style fixes".
- Improvements to the swapping of multi-size THPs from Ryan Roberts
in the series "Swap-out mTHP without splitting".
- Kefeng Wang has significantly optimized the handling of arm64's
permission page faults in the series
"arch/mm/fault: accelerate pagefault when badaccess"
"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"
- GUP cleanups from David Hildenbrand in "mm/gup: consistently call
it GUP-fast".
- hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault
path to use struct vm_fault".
- selftests build fixes from John Hubbard in the series "Fix
selftests/mm build without requiring "make headers"".
- Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
series "Improved Memory Tier Creation for CPUless NUMA Nodes".
Fixes the initialization code so that migration between different
memory types works as intended.
- David Hildenbrand has improved follow_pte() and fixed an errant
driver in the series "mm: follow_pte() improvements and acrn
follow_pte() fixes".
- David also did some cleanup work on large folio mapcounts in his
series "mm: mapcount for large folios + page_mapcount() cleanups".
- Folio conversions in KSM in Alex Shi's series "transfer page to
folio in KSM".
- Barry Song has added some sysfs stats for monitoring multi-size
THP's in the series "mm: add per-order mTHP alloc and swpout
counters".
- Some zswap cleanups from Yosry Ahmed in the series "zswap
same-filled and limit checking cleanups".
- Matthew Wilcox has been looking at buffer_head code and found the
documentation to be lacking. The series is "Improve buffer head
documentation".
- Multi-size THPs get more work, this time from Lance Yang. His
series "mm/madvise: enhance lazyfreeing with mTHP in madvise_free"
optimizes the freeing of these things.
- Kemeng Shi has added more userspace-visible writeback
instrumentation in the series "Improve visibility of writeback".
- Kemeng Shi then sent some maintenance work on top in the series
"Fix and cleanups to page-writeback".
- Matthew Wilcox reduces mmap_lock traffic in the anon vma code in
the series "Improve anon_vma scalability for anon VMAs". Intel's
test bot reported an improbable 3x improvement in one test.
- SeongJae Park adds some DAMON feature work in the series
"mm/damon: add a DAMOS filter type for page granularity access recheck"
"selftests/damon: add DAMOS quota goal test"
- Also some maintenance work in the series
"mm/damon/paddr: simplify page level access re-check for pageout"
"mm/damon: misc fixes and improvements"
- David Hildenbrand has disabled some known-to-fail selftests ni the
series "selftests: mm: cow: flag vmsplice() hugetlb tests as
XFAIL".
- memcg metadata storage optimizations from Shakeel Butt in "memcg:
reduce memory consumption by memcg stats".
- DAX fixes and maintenance work from Vishal Verma in the series
"dax/bus.c: Fixups for dax-bus locking""
* tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (426 commits)
memcg, oom: cleanup unused memcg_oom_gfp_mask and memcg_oom_order
selftests/mm: hugetlb_madv_vs_map: avoid test skipping by querying hugepage size at runtime
mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_wp
mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_fault
selftests: cgroup: add tests to verify the zswap writeback path
mm: memcg: make alloc_mem_cgroup_per_node_info() return bool
mm/damon/core: fix return value from damos_wmark_metric_value
mm: do not update memcg stats for NR_{FILE/SHMEM}_PMDMAPPED
selftests: cgroup: remove redundant enabling of memory controller
Docs/mm/damon/maintainer-profile: allow posting patches based on damon/next tree
Docs/mm/damon/maintainer-profile: change the maintainer's timezone from PST to PT
Docs/mm/damon/design: use a list for supported filters
Docs/admin-guide/mm/damon/usage: fix wrong schemes effective quota update command
Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file
selftests/damon: classify tests for functionalities and regressions
selftests/damon/_damon_sysfs: use 'is' instead of '==' for 'None'
selftests/damon/_damon_sysfs: find sysfs mount point from /proc/mounts
selftests/damon/_damon_sysfs: check errors from nr_schemes file reads
mm/damon/core: initialize ->esz_bp from damos_quota_init_priv()
selftests/damon: add a test for DAMOS quota goal
...
|
||
|
Kees Cook
|
ae1a863bcd |
kunit/fortify: Fix memcmp() test to be amplitude agnostic
When memcmp() returns a non-zero value, only the signed bit has any meaning. The actual value may differ between implementations. Reported-by: Nathan Chancellor <nathan@kernel.org> Closes: https://github.com/ClangBuiltLinux/linux/issues/2025 Tested-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20240518184020.work.604-kees@kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Kees Cook
|
890a64810d |
ubsan: Restore dependency on ARCH_HAS_UBSAN
While removing CONFIG_UBSAN_SANITIZE_ALL, ARCH_HAS_UBSAN wasn't correctly
depended on. Restore this, as we do not want to attempt UBSAN builds
unless it's actually been tested on a given architecture.
Reported-by: Masahiro Yamada <masahiroy@kernel.org>
Closes: https://lore.kernel.org/all/20240514095427.541201-1-masahiroy@kernel.org
Fixes:
|
||
|
Linus Torvalds
|
25f4874662 |
RDMA v6.10 merge window
Normal set of driver updates and small fixes:
- Small improvements and fixes for erdma, efa, hfi1, bnxt_re
- Fix a UAF crash after module unload on leaking restrack entry
- Continue adding full RDMA support in mana with support for EQs, GID's
and CQs
- Improvements to the mkey cache in mlx5
- DSCP traffic class support in hns and several bug fixes
- Cap the maximum number of MADs in the receive queue to avoid OOM
- Another batch of rxe bug fixes from large scale testing
- __iowrite64_copy() optimizations for write combining MMIO memory
- Remove NULL checks before dev_put/hold()
- EFA support for receive with immediate
- Fix a recent memleaking regression in a cma error path
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"Aside from the usual things this has an arch update for
__iowrite64_copy() used by the RDMA drivers.
This API was intended to generate large 64 byte MemWr TLPs on PCI.
These days most processors had done this by just repeating writel() in
a loop. S390 and some new ARM64 designs require a special helper to
get this to generate.
- Small improvements and fixes for erdma, efa, hfi1, bnxt_re
- Fix a UAF crash after module unload on leaking restrack entry
- Continue adding full RDMA support in mana with support for EQs,
GID's and CQs
- Improvements to the mkey cache in mlx5
- DSCP traffic class support in hns and several bug fixes
- Cap the maximum number of MADs in the receive queue to avoid OOM
- Another batch of rxe bug fixes from large scale testing
- __iowrite64_copy() optimizations for write combining MMIO memory
- Remove NULL checks before dev_put/hold()
- EFA support for receive with immediate
- Fix a recent memleaking regression in a cma error path"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (70 commits)
RDMA/cma: Fix kmemleak in rdma_core observed during blktests nvme/rdma use siw
RDMA/IPoIB: Fix format truncation compilation errors
bnxt_re: avoid shift undefined behavior in bnxt_qplib_alloc_init_hwq
RDMA/efa: Support QP with unsolicited write w/ imm. receive
IB/hfi1: Remove generic .ndo_get_stats64
IB/hfi1: Do not use custom stat allocator
RDMA/hfi1: Use RMW accessors for changing LNKCTL2
RDMA/mana_ib: implement uapi for creation of rnic cq
RDMA/mana_ib: boundary check before installing cq callbacks
RDMA/mana_ib: introduce a helper to remove cq callbacks
RDMA/mana_ib: create and destroy RNIC cqs
RDMA/mana_ib: create EQs for RNIC CQs
RDMA/core: Remove NULL check before dev_{put, hold}
RDMA/ipoib: Remove NULL check before dev_{put, hold}
RDMA/mlx5: Remove NULL check before dev_{put, hold}
RDMA/mlx5: Track DCT, DCI and REG_UMR QPs as diver_detail resources.
RDMA/core: Add an option to display driver-specific QPs in the rdmatool
RDMA/efa: Add shutdown notifier
RDMA/mana_ib: Fix missing ret value
IB/mlx5: Use __iowrite64_copy() for write combining stores
...
|
||
|
Linus Torvalds
|
ff9a79307f |
Kbuild updates for v6.10
- Avoid 'constexpr', which is a keyword in C23
- Allow 'dtbs_check' and 'dt_compatible_check' run independently of
'dt_binding_check'
- Fix weak references to avoid GOT entries in position-independent
code generation
- Convert the last use of 'optional' property in arch/sh/Kconfig
- Remove support for the 'optional' property in Kconfig
- Remove support for Clang's ThinLTO caching, which does not work with
the .incbin directive
- Change the semantics of $(src) so it always points to the source
directory, which fixes Makefile inconsistencies between upstream and
downstream
- Fix 'make tar-pkg' for RISC-V to produce a consistent package
- Provide reasonable default coverage for objtool, sanitizers, and
profilers
- Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc.
- Remove the last use of tristate choice in drivers/rapidio/Kconfig
- Various cleanups and fixes in Kconfig
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Merge tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Avoid 'constexpr', which is a keyword in C23
- Allow 'dtbs_check' and 'dt_compatible_check' run independently of
'dt_binding_check'
- Fix weak references to avoid GOT entries in position-independent code
generation
- Convert the last use of 'optional' property in arch/sh/Kconfig
- Remove support for the 'optional' property in Kconfig
- Remove support for Clang's ThinLTO caching, which does not work with
the .incbin directive
- Change the semantics of $(src) so it always points to the source
directory, which fixes Makefile inconsistencies between upstream and
downstream
- Fix 'make tar-pkg' for RISC-V to produce a consistent package
- Provide reasonable default coverage for objtool, sanitizers, and
profilers
- Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc.
- Remove the last use of tristate choice in drivers/rapidio/Kconfig
- Various cleanups and fixes in Kconfig
* tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (46 commits)
kconfig: use sym_get_choice_menu() in sym_check_prop()
rapidio: remove choice for enumeration
kconfig: lxdialog: remove initialization with A_NORMAL
kconfig: m/nconf: merge two item_add_str() calls
kconfig: m/nconf: remove dead code to display value of bool choice
kconfig: m/nconf: remove dead code to display children of choice members
kconfig: gconf: show checkbox for choice correctly
kbuild: use GCOV_PROFILE and KCSAN_SANITIZE in scripts/Makefile.modfinal
Makefile: remove redundant tool coverage variables
kbuild: provide reasonable defaults for tool coverage
modules: Drop the .export_symbol section from the final modules
kconfig: use menu_list_for_each_sym() in sym_check_choice_deps()
kconfig: use sym_get_choice_menu() in conf_write_defconfig()
kconfig: add sym_get_choice_menu() helper
kconfig: turn defaults and additional prompt for choice members into error
kconfig: turn missing prompt for choice members into error
kconfig: turn conf_choice() into void function
kconfig: use linked list in sym_set_changed()
kconfig: gconf: use MENU_CHANGED instead of SYMBOL_CHANGED
kconfig: gconf: remove debug code
...
|
||
|
Linus Torvalds
|
70a663205d |
Probes updates for v6.10:
- tracing/probes: Adding new pseudo-types %pd and %pD support for dumping
dentry name from 'struct dentry *' and file name from 'struct file *'.
- uprobes: Some performance optimizations have been done.
. Speed up the BPF uprobe event by delaying the fetching of the uprobe
event arguments that are not used in BPF.
. Avoid locking by speculatively checking whether uprobe event is valid.
. Reduce lock contention by using read/write_lock instead of spinlock for
uprobe list operation. This improved BPF uprobe benchmark result 43% on
average.
- rethook: Removes non-fatal warning messages when tracing stack from BPF
and skip rcu_is_watching() validation in rethook if possible.
- objpool: Optimizing objpool (which is used by kretprobes and fprobe as
rethook backend storage) by inlining functions and avoid caching nr_cpu_ids
because it is a const value.
- fprobe: Add entry/exit callbacks types (code cleanup)
- kprobes: Check ftrace was killed in kprobes if it uses ftrace.
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Merge tag 'probes-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes updates from Masami Hiramatsu:
- tracing/probes: Add new pseudo-types %pd and %pD support for dumping
dentry name from 'struct dentry *' and file name from 'struct file *'
- uprobes performance optimizations:
- Speed up the BPF uprobe event by delaying the fetching of the
uprobe event arguments that are not used in BPF
- Avoid locking by speculatively checking whether uprobe event is
valid
- Reduce lock contention by using read/write_lock instead of
spinlock for uprobe list operation. This improved BPF uprobe
benchmark result 43% on average
- rethook: Remove non-fatal warning messages when tracing stack from
BPF and skip rcu_is_watching() validation in rethook if possible
- objpool: Optimize objpool (which is used by kretprobes and fprobe as
rethook backend storage) by inlining functions and avoid caching
nr_cpu_ids because it is a const value
- fprobe: Add entry/exit callbacks types (code cleanup)
- kprobes: Check ftrace was killed in kprobes if it uses ftrace
* tag 'probes-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
kprobe/ftrace: bail out if ftrace was killed
selftests/ftrace: Fix required features for VFS type test case
objpool: cache nr_possible_cpus() and avoid caching nr_cpu_ids
objpool: enable inlining objpool_push() and objpool_pop() operations
rethook: honor CONFIG_FTRACE_VALIDATE_RCU_IS_WATCHING in rethook_try_get()
ftrace: make extra rcu_is_watching() validation check optional
uprobes: reduce contention on uprobes_tree access
rethook: Remove warning messages printed for finding return address of a frame.
fprobe: Add entry/exit callbacks types
selftests/ftrace: add fprobe test cases for VFS type "%pd" and "%pD"
selftests/ftrace: add kprobe test cases for VFS type "%pd" and "%pD"
Documentation: tracing: add new type '%pd' and '%pD' for kprobe
tracing/probes: support '%pD' type for print struct file's name
tracing/probes: support '%pd' type for print struct dentry's name
uprobes: add speculative lockless system-wide uprobe filter check
uprobes: prepare uprobe args buffer lazily
uprobes: encapsulate preparation of uprobe args buffer
|
||
|
Linus Torvalds
|
1b294a1f35 |
Networking changes for 6.10.
Core & protocols
----------------
- Complete rework of garbage collection of AF_UNIX sockets.
AF_UNIX is prone to forming reference count cycles due to fd passing
functionality. New method based on Tarjan's Strongly Connected Components
algorithm should be both faster and remove a lot of workarounds
we accumulated over the years.
- Add TCP fraglist GRO support, allowing chaining multiple TCP packets
and forwarding them together. Useful for small switches / routers which
lack basic checksum offload in some scenarios (e.g. PPPoE).
- Support using SMP threads for handling packet backlog i.e. packet
processing from software interfaces and old drivers which don't
use NAPI. This helps move the processing out of the softirq jumble.
- Continue work of converting from rtnl lock to RCU protection.
Don't require rtnl lock when reading: IPv6 routing FIB, IPv6 address
labels, netdev threaded NAPI sysfs files, bonding driver's sysfs files,
MPLS devconf, IPv4 FIB rules, netns IDs, tcp metrics, TC Qdiscs,
neighbor entries, ARP entries via ioctl(SIOCGARP), a lot of the link
information available via rtnetlink.
- Small optimizations from Eric to UDP wake up handling, memory accounting,
RPS/RFS implementation, TCP packet sizing etc.
- Allow direct page recycling in the bulk API used by XDP, for +2% PPS.
- Support peek with an offset on TCP sockets.
- Add MPTCP APIs for querying last time packets were received/sent/acked,
and whether MPTCP "upgrade" succeeded on a TCP socket.
- Add intra-node communication shortcut to improve SMC performance.
- Add IPv6 (and IPv{4,6}-over-IPv{4,6}) support to the GTP protocol driver.
- Add HSR-SAN (RedBOX) mode of operation to the HSR protocol driver.
- Add reset reasons for tracing what caused a TCP reset to be sent.
- Introduce direction attribute for xfrm (IPSec) states.
State can be used either for input or output packet processing.
Things we sprinkled into general kernel code
--------------------------------------------
- Add bitmap_{read,write}(), bitmap_size(), expose BYTES_TO_BITS().
This required touch-ups and renaming of a few existing users.
- Add Endian-dependent __counted_by_{le,be} annotations.
- Make building selftests "quieter" by printing summaries like
"CC object.o" rather than full commands with all the arguments.
Netfilter
---------
- Use GFP_KERNEL to clone elements, to deal better with OOM situations
and avoid failures in the .commit step.
BPF
---
- Add eBPF JIT for ARCv2 CPUs.
- Support attaching kprobe BPF programs through kprobe_multi link in
a session mode, meaning, a BPF program is attached to both function entry
and return, the entry program can decide if the return program gets
executed and the entry program can share u64 cookie value with return
program. "Session mode" is a common use-case for tetragon and bpftrace.
- Add the ability to specify and retrieve BPF cookie for raw tracepoint
programs in order to ease migration from classic to raw tracepoints.
- Add an internal-only BPF per-CPU instruction for resolving per-CPU
memory addresses and implement support in x86, ARM64 and RISC-V JITs.
This allows inlining functions which need to access per-CPU state.
- Optimize x86 BPF JIT's emit_mov_imm64, and add support for various
atomics in bpf_arena which can be JITed as a single x86 instruction.
Support BPF arena on ARM64.
- Add a new bpf_wq API for deferring events and refactor process-context
bpf_timer code to keep common code where possible.
- Harden the BPF verifier's and/or/xor value tracking.
- Introduce crypto kfuncs to let BPF programs call kernel crypto APIs.
- Support bpf_tail_call_static() helper for BPF programs with GCC 13.
- Add bpf_preempt_{disable,enable}() kfuncs in order to allow a BPF
program to have code sections where preemption is disabled.
Driver API
----------
- Skip software TC processing completely if all installed rules are
marked as HW-only, instead of checking the HW-only flag rule by rule.
- Add support for configuring PoE (Power over Ethernet), similar to
the already existing support for PoDL (Power over Data Line) config.
- Initial bits of a queue control API, for now allowing a single queue
to be reset without disturbing packet flow to other queues.
- Common (ethtool) statistics for hardware timestamping.
Tests and tooling
-----------------
- Remove the need to create a config file to run the net forwarding tests
so that a naive "make run_tests" can exercise them.
- Define a method of writing tests which require an external endpoint
to communicate with (to send/receive data towards the test machine).
Add a few such tests.
- Create a shared code library for writing Python tests. Expose the YAML
Netlink library from tools/ to the tests for easy Netlink access.
- Move netfilter tests under net/, extend them, separate performance tests
from correctness tests, and iron out issues found by running them
"on every commit".
- Refactor BPF selftests to use common network helpers.
- Further work filling in YAML definitions of Netlink messages for:
nftables, team driver, bonding interfaces, vlan interfaces, VF info,
TC u32 mark, TC police action.
- Teach Python YAML Netlink to decode attribute policies.
- Extend the definition of the "indexed array" construct in the specs
to cover arrays of scalars rather than just nests.
- Add hyperlinks between definitions in generated Netlink docs.
Drivers
-------
- Make sure unsupported flower control flags are rejected by drivers,
and make more drivers report errors directly to the application rather
than dmesg (large number of driver changes from Asbjørn Sloth Tønnesen).
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- support multiple RSS contexts and steering traffic to them
- support XDP metadata
- make page pool allocations more NUMA aware
- Intel (100G, ice, idpf):
- extract datapath code common among Intel drivers into a library
- use fewer resources in switchdev by sharing queues with the PF
- add PFCP filter support
- add Ethernet filter support
- use a spinlock instead of HW lock in PTP clock ops
- support 5 layer Tx scheduler topology
- nVidia/Mellanox:
- 800G link modes and 100G SerDes speeds
- per-queue IRQ coalescing configuration
- Marvell Octeon:
- support offloading TC packet mark action
- Ethernet NICs consumer, embedded and virtual:
- stop lying about skb->truesize in USB Ethernet drivers, it messes up
TCP memory calculations
- Google cloud vNIC:
- support changing ring size via ethtool
- support ring reset using the queue control API
- VirtIO net:
- expose flow hash from RSS to XDP
- per-queue statistics
- add selftests
- Synopsys (stmmac):
- support controllers which require an RX clock signal from the MII
bus to perform their hardware initialization
- TI:
- icssg_prueth: support ICSSG-based Ethernet on AM65x SR1.0 devices
- icssg_prueth: add SW TX / RX Coalescing based on hrtimers
- cpsw: minimal XDP support
- Renesas (ravb):
- support describing the MDIO bus
- Realtek (r8169):
- add support for RTL8168M
- Microchip Sparx5:
- matchall and flower actions mirred and redirect
- Ethernet switches:
- nVidia/Mellanox:
- improve events processing performance
- Marvell:
- add support for MV88E6250 family internal PHYs
- Microchip:
- add DCB and DSCP mapping support for KSZ switches
- vsc73xx: convert to PHYLINK
- Realtek:
- rtl8226b/rtl8221b: add C45 instances and SerDes switching
- Many driver changes related to PHYLIB and PHYLINK deprecated API cleanup.
- Ethernet PHYs:
- Add a new driver for Airoha EN8811H 2.5 Gigabit PHY.
- micrel: lan8814: add support for PPS out and external timestamp trigger
- WiFi:
- Disable Wireless Extensions (WEXT) in all Wi-Fi 7 devices drivers.
Modern devices can only be configured using nl80211.
- mac80211/cfg80211
- handle color change per link for WiFi 7 Multi-Link Operation
- Intel (iwlwifi):
- don't support puncturing in 5 GHz
- support monitor mode on passive channels
- BZ-W device support
- P2P with HE/EHT support
- re-add support for firmware API 90
- provide channel survey information for Automatic Channel Selection
- MediaTek (mt76):
- mt7921 LED control
- mt7925 EHT radiotap support
- mt7920e PCI support
- Qualcomm (ath11k):
- P2P support for QCA6390, WCN6855 and QCA2066
- support hibernation
- ieee80211-freq-limit Device Tree property support
- Qualcomm (ath12k):
- refactoring in preparation of multi-link support
- suspend and hibernation support
- ACPI support
- debugfs support, including dfs_simulate_radar support
- RealTek:
- rtw88: RTL8723CS SDIO device support
- rtw89: RTL8922AE Wi-Fi 7 PCI device support
- rtw89: complete features of new WiFi 7 chip 8922AE including
BT-coexistence and Wake-on-WLAN
- rtw89: use BIOS ACPI settings to set TX power and channels
- rtl8xxxu: enable Management Frame Protection (MFP) support
- Bluetooth:
- support for Intel BlazarI and Filmore Peak2 (BE201)
- support for MediaTek MT7921S SDIO
- initial support for Intel PCIe BT driver
- remove HCI_AMP support
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Complete rework of garbage collection of AF_UNIX sockets.
AF_UNIX is prone to forming reference count cycles due to fd
passing functionality. New method based on Tarjan's Strongly
Connected Components algorithm should be both faster and remove a
lot of workarounds we accumulated over the years.
- Add TCP fraglist GRO support, allowing chaining multiple TCP
packets and forwarding them together. Useful for small switches /
routers which lack basic checksum offload in some scenarios (e.g.
PPPoE).
- Support using SMP threads for handling packet backlog i.e. packet
processing from software interfaces and old drivers which don't use
NAPI. This helps move the processing out of the softirq jumble.
- Continue work of converting from rtnl lock to RCU protection.
Don't require rtnl lock when reading: IPv6 routing FIB, IPv6
address labels, netdev threaded NAPI sysfs files, bonding driver's
sysfs files, MPLS devconf, IPv4 FIB rules, netns IDs, tcp metrics,
TC Qdiscs, neighbor entries, ARP entries via ioctl(SIOCGARP), a lot
of the link information available via rtnetlink.
- Small optimizations from Eric to UDP wake up handling, memory
accounting, RPS/RFS implementation, TCP packet sizing etc.
- Allow direct page recycling in the bulk API used by XDP, for +2%
PPS.
- Support peek with an offset on TCP sockets.
- Add MPTCP APIs for querying last time packets were received/sent/acked
and whether MPTCP "upgrade" succeeded on a TCP socket.
- Add intra-node communication shortcut to improve SMC performance.
- Add IPv6 (and IPv{4,6}-over-IPv{4,6}) support to the GTP protocol
driver.
- Add HSR-SAN (RedBOX) mode of operation to the HSR protocol driver.
- Add reset reasons for tracing what caused a TCP reset to be sent.
- Introduce direction attribute for xfrm (IPSec) states. State can be
used either for input or output packet processing.
Things we sprinkled into general kernel code:
- Add bitmap_{read,write}(), bitmap_size(), expose BYTES_TO_BITS().
This required touch-ups and renaming of a few existing users.
- Add Endian-dependent __counted_by_{le,be} annotations.
- Make building selftests "quieter" by printing summaries like
"CC object.o" rather than full commands with all the arguments.
Netfilter:
- Use GFP_KERNEL to clone elements, to deal better with OOM
situations and avoid failures in the .commit step.
BPF:
- Add eBPF JIT for ARCv2 CPUs.
- Support attaching kprobe BPF programs through kprobe_multi link in
a session mode, meaning, a BPF program is attached to both function
entry and return, the entry program can decide if the return
program gets executed and the entry program can share u64 cookie
value with return program. "Session mode" is a common use-case for
tetragon and bpftrace.
- Add the ability to specify and retrieve BPF cookie for raw
tracepoint programs in order to ease migration from classic to raw
tracepoints.
- Add an internal-only BPF per-CPU instruction for resolving per-CPU
memory addresses and implement support in x86, ARM64 and RISC-V
JITs. This allows inlining functions which need to access per-CPU
state.
- Optimize x86 BPF JIT's emit_mov_imm64, and add support for various
atomics in bpf_arena which can be JITed as a single x86
instruction. Support BPF arena on ARM64.
- Add a new bpf_wq API for deferring events and refactor
process-context bpf_timer code to keep common code where possible.
- Harden the BPF verifier's and/or/xor value tracking.
- Introduce crypto kfuncs to let BPF programs call kernel crypto
APIs.
- Support bpf_tail_call_static() helper for BPF programs with GCC 13.
- Add bpf_preempt_{disable,enable}() kfuncs in order to allow a BPF
program to have code sections where preemption is disabled.
Driver API:
- Skip software TC processing completely if all installed rules are
marked as HW-only, instead of checking the HW-only flag rule by
rule.
- Add support for configuring PoE (Power over Ethernet), similar to
the already existing support for PoDL (Power over Data Line)
config.
- Initial bits of a queue control API, for now allowing a single
queue to be reset without disturbing packet flow to other queues.
- Common (ethtool) statistics for hardware timestamping.
Tests and tooling:
- Remove the need to create a config file to run the net forwarding
tests so that a naive "make run_tests" can exercise them.
- Define a method of writing tests which require an external endpoint
to communicate with (to send/receive data towards the test
machine). Add a few such tests.
- Create a shared code library for writing Python tests. Expose the
YAML Netlink library from tools/ to the tests for easy Netlink
access.
- Move netfilter tests under net/, extend them, separate performance
tests from correctness tests, and iron out issues found by running
them "on every commit".
- Refactor BPF selftests to use common network helpers.
- Further work filling in YAML definitions of Netlink messages for:
nftables, team driver, bonding interfaces, vlan interfaces, VF
info, TC u32 mark, TC police action.
- Teach Python YAML Netlink to decode attribute policies.
- Extend the definition of the "indexed array" construct in the specs
to cover arrays of scalars rather than just nests.
- Add hyperlinks between definitions in generated Netlink docs.
Drivers:
- Make sure unsupported flower control flags are rejected by drivers,
and make more drivers report errors directly to the application
rather than dmesg (large number of driver changes from Asbjørn
Sloth Tønnesen).
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- support multiple RSS contexts and steering traffic to them
- support XDP metadata
- make page pool allocations more NUMA aware
- Intel (100G, ice, idpf):
- extract datapath code common among Intel drivers into a library
- use fewer resources in switchdev by sharing queues with the PF
- add PFCP filter support
- add Ethernet filter support
- use a spinlock instead of HW lock in PTP clock ops
- support 5 layer Tx scheduler topology
- nVidia/Mellanox:
- 800G link modes and 100G SerDes speeds
- per-queue IRQ coalescing configuration
- Marvell Octeon:
- support offloading TC packet mark action
- Ethernet NICs consumer, embedded and virtual:
- stop lying about skb->truesize in USB Ethernet drivers, it
messes up TCP memory calculations
- Google cloud vNIC:
- support changing ring size via ethtool
- support ring reset using the queue control API
- VirtIO net:
- expose flow hash from RSS to XDP
- per-queue statistics
- add selftests
- Synopsys (stmmac):
- support controllers which require an RX clock signal from the
MII bus to perform their hardware initialization
- TI:
- icssg_prueth: support ICSSG-based Ethernet on AM65x SR1.0 devices
- icssg_prueth: add SW TX / RX Coalescing based on hrtimers
- cpsw: minimal XDP support
- Renesas (ravb):
- support describing the MDIO bus
- Realtek (r8169):
- add support for RTL8168M
- Microchip Sparx5:
- matchall and flower actions mirred and redirect
- Ethernet switches:
- nVidia/Mellanox:
- improve events processing performance
- Marvell:
- add support for MV88E6250 family internal PHYs
- Microchip:
- add DCB and DSCP mapping support for KSZ switches
- vsc73xx: convert to PHYLINK
- Realtek:
- rtl8226b/rtl8221b: add C45 instances and SerDes switching
- Many driver changes related to PHYLIB and PHYLINK deprecated API
cleanup
- Ethernet PHYs:
- Add a new driver for Airoha EN8811H 2.5 Gigabit PHY.
- micrel: lan8814: add support for PPS out and external timestamp trigger
- WiFi:
- Disable Wireless Extensions (WEXT) in all Wi-Fi 7 devices
drivers. Modern devices can only be configured using nl80211.
- mac80211/cfg80211
- handle color change per link for WiFi 7 Multi-Link Operation
- Intel (iwlwifi):
- don't support puncturing in 5 GHz
- support monitor mode on passive channels
- BZ-W device support
- P2P with HE/EHT support
- re-add support for firmware API 90
- provide channel survey information for Automatic Channel Selection
- MediaTek (mt76):
- mt7921 LED control
- mt7925 EHT radiotap support
- mt7920e PCI support
- Qualcomm (ath11k):
- P2P support for QCA6390, WCN6855 and QCA2066
- support hibernation
- ieee80211-freq-limit Device Tree property support
- Qualcomm (ath12k):
- refactoring in preparation of multi-link support
- suspend and hibernation support
- ACPI support
- debugfs support, including dfs_simulate_radar support
- RealTek:
- rtw88: RTL8723CS SDIO device support
- rtw89: RTL8922AE Wi-Fi 7 PCI device support
- rtw89: complete features of new WiFi 7 chip 8922AE including
BT-coexistence and Wake-on-WLAN
- rtw89: use BIOS ACPI settings to set TX power and channels
- rtl8xxxu: enable Management Frame Protection (MFP) support
- Bluetooth:
- support for Intel BlazarI and Filmore Peak2 (BE201)
- support for MediaTek MT7921S SDIO
- initial support for Intel PCIe BT driver
- remove HCI_AMP support"
* tag 'net-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1827 commits)
selftests: netfilter: fix packetdrill conntrack testcase
net: gro: fix napi_gro_cb zeroed alignment
Bluetooth: btintel_pcie: Refactor and code cleanup
Bluetooth: btintel_pcie: Fix warning reported by sparse
Bluetooth: hci_core: Fix not handling hdev->le_num_of_adv_sets=1
Bluetooth: btintel: Fix compiler warning for multi_v7_defconfig config
Bluetooth: btintel_pcie: Fix compiler warnings
Bluetooth: btintel_pcie: Add *setup* function to download firmware
Bluetooth: btintel_pcie: Add support for PCIe transport
Bluetooth: btintel: Export few static functions
Bluetooth: HCI: Remove HCI_AMP support
Bluetooth: L2CAP: Fix div-by-zero in l2cap_le_flowctl_init()
Bluetooth: qca: Fix error code in qca_read_fw_build_info()
Bluetooth: hci_conn: Use __counted_by() and avoid -Wfamnae warning
Bluetooth: btintel: Add support for Filmore Peak2 (BE201)
Bluetooth: btintel: Add support for BlazarI
LE Create Connection command timeout increased to 20 secs
dt-bindings: net: bluetooth: Add MediaTek MT7921S SDIO Bluetooth
Bluetooth: compute LE flow credits based on recvbuf space
Bluetooth: hci_sync: Use cmd->num_cis instead of magic number
...
|
||
|
Linus Torvalds
|
896d3fce84 |
linux_kselftest-kunit-6.10-rc1
This kunit update for Linux 6.10-rc1 consists of: - fix to race condition in try-catch completion - change to __kunit_test_suites_init() to exit early if there is nothing to test - change to string-stream-test to use KUNIT_DEFINE_ACTION_WRAPPER - moving fault tests behind KUNIT_FAULT_TEST Kconfig option - kthread test fixes and improvements - iov_iter test fixes -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmZCNsAACgkQCwJExA0N Qxx03w/9EmjF3T16LPaeuerdoypWDcroDT6gpoFXGrvf3lDrna8uDNija5Pb1yMn l97wla3IJ1EZRMTy1jgWGQiiGIdkV8hcze65HZMi19qx/49TUbhA/pTmpYC56cp9 sk2fBjOHz8iI4kdL4eCMr9MpSiwOIDcfWOr1Lh/AP2LHOU1pRdFZbwO6iZ3wyGlJ JH4D1CwmfgMGEau4qUo0jvuRbFAf33S+yEI9gr8CskPItljFVO4jVz4lprnTbU9i qAOivHzwcHyYc0upb6q2vIlp8vhmDygG/m07lnwfF7ZHsYo+3zV4FkxHspN2+jGA frH7Y0X9zt6YjRRMb9NcNnI67VTiSNzdCvB7urUhKlbXoZ2gjtgB7zHeQtAhlXRo XVa4QgWBI5ExKBuLI+0yKo4wEO8M0quXxhbX+2Q+tsRnoYmhwb0G8AUyl/26bt2g RelGrArDS5eMrlxl97rjMGFrB5Uan2MR751tl+aZPgyNRW3tRKJnQLZmM1z8aFQp vGReT6POzCnQ1wLUkcj6mnObbv9XuuYY1BQgKCtmJflvRToEuwpLOKK8Uca7ou3p TbVarGIn0jdHv4zGkXrAkt/mhcxanBXhVKLfh/MqQ7fCZBULkSrjJFLhCpvvHwIV nckaP2sZWls6FTDuawFOUxrr/+LjJchMmHhFy9MiDaVoieiTg6U= =3QIa -----END PGP SIGNATURE----- Merge tag 'linux_kselftest-kunit-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kunit updates from Shuah Khan: - fix race condition in try-catch completion - change __kunit_test_suites_init() to exit early if there is nothing to test - change string-stream-test to use KUNIT_DEFINE_ACTION_WRAPPER - move fault tests behind KUNIT_FAULT_TEST Kconfig option - kthread test fixes and improvements - iov_iter test fixes * tag 'linux_kselftest-kunit-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: bail out early in __kunit_test_suites_init() if there are no suites to test kunit: string-stream-test: use KUNIT_DEFINE_ACTION_WRAPPER kunit: test: Move fault tests behind KUNIT_FAULT_TEST Kconfig option kunit: unregister the device on error kunit: Fix race condition in try-catch completion kunit: Add tests for fault kunit: Print last test location on fault kunit: Fix KUNIT_SUCCESS() calls in iov_iter tests kunit: Handle test faults kunit: Fix timeout message kunit: Fix kthread reference kunit: Handle thread creation error |
||
|
Linus Torvalds
|
6bfd2d442a |
Updates for the interrupt subsystem:
- Core code:
- Interrupt storm detection for the lockup watchdog:
Lockups which are caused by interrupt storms are not easy to debug
because there is no information about the events which make the lockup
detector trigger.
To make this more user friendly, provide an extenstion to interrupt
statistics which allows to take snapshots and an interface to retrieve
the delta to the snapshot. Use this new mechanism in the watchdog code
to do a two stage lockup analysis by taking the snapshot and printing
the deltas for the topmost active interrupts on the second trigger.
Note: This contains both the interrupt and the watchdog changes as
the latter depend on the former obviously.
- Avoid summation loops in the /proc/interrupts output and use the global
counter when possible
- Skip suspended interrupts on CPU hotplug operations to ensure that they
are not delivered before the system resumes the device drivers when
coming out of suspend.
- On CPU hot-unplug interrupts which are affine to the outgoing CPU are
migrated to a different CPU in the affinity mask. This can fail when
the CPUs have no vectors left. Instead of giving up try to migrate it
to any online CPU and thereby breaking the affinity setting in order to
prevent a stale device interrupt which targets an offline CPU
- The usual small cleanups
- Driver code:
- Support for the RISCV AIA MSI controller
- Make the interrupt allocation for the Loongson PCH controller more
flexible to prevent vector exhaustion
- The usual set of cleanups and fixes all over the place
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Merge tag 'irq-core-2024-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull interrupt subsystem updates from Thomas Gleixner:
"Core code:
- Interrupt storm detection for the lockup watchdog:
Lockups which are caused by interrupt storms are not easy to debug
because there is no information about the events which make the
lockup detector trigger.
To make this more user friendly, provide an extenstion to interrupt
statistics which allows to take snapshots and an interface to
retrieve the delta to the snapshot. Use this new mechanism in the
watchdog code to do a two stage lockup analysis by taking the
snapshot and printing the deltas for the topmost active interrupts
on the second trigger.
Note: This contains both the interrupt and the watchdog changes as
the latter depend on the former obviously.
- Avoid summation loops in the /proc/interrupts output and use the
global counter when possible
- Skip suspended interrupts on CPU hotplug operations to ensure that
they are not delivered before the system resumes the device drivers
when coming out of suspend.
- On CPU hot-unplug interrupts which are affine to the outgoing CPU
are migrated to a different CPU in the affinity mask. This can fail
when the CPUs have no vectors left. Instead of giving up try to
migrate it to any online CPU and thereby breaking the affinity
setting in order to prevent a stale device interrupt which targets
an offline CPU
- The usual small cleanups
Driver code:
- Support for the RISCV AIA MSI controller
- Make the interrupt allocation for the Loongson PCH controller more
flexible to prevent vector exhaustion
- The usual set of cleanups and fixes all over the place"
* tag 'irq-core-2024-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits)
irqchip/gic-v3-its: Remove BUG_ON in its_vpe_irq_domain_alloc
cpuidle: Avoid explicit cpumask allocation on stack
irqchip/sifive-plic: Avoid explicit cpumask allocation on stack
irqchip/riscv-aplic-direct: Avoid explicit cpumask allocation on stack
irqchip/loongson-eiointc: Avoid explicit cpumask allocation on stack
irqchip/gic-v3-its: Avoid explicit cpumask allocation on stack
irqchip/irq-bcm6345-l1: Avoid explicit cpumask allocation on stack
cpumask: Introduce cpumask_first_and_and()
irqchip/irq-brcmstb-l2: Avoid saving mask on shutdown
genirq: Reuse irq_is_nmi()
genirq/cpuhotplug: Retry with cpu_online_mask when migration fails
genirq/cpuhotplug: Skip suspended interrupts when restoring affinity
arm64: dts: st: Add interrupt parent to pinctrl on stm32mp251
arm64: dts: st: Add exti1 and exti2 nodes on stm32mp251
ARM: dts: stm32: List exti parent interrupts on stm32mp131
ARM: dts: stm32: List exti parent interrupts on stm32mp151
arm64: Kconfig.platforms: Enable STM32_EXTI for ARCH_STM32
irqchip/stm32-exti: Mark events reserved with RIF configuration check
irqchip/stm32-exti: Skip secure events
irqchip/stm32-exti: Convert driver to standard PM
...
|
||
|
Linus Torvalds
|
2d9db778dd |
Timers and timekeeping updates:
- Core code:
- Make timekeeping and VDSO time readouts resilent against math overflow:
In guest context the kernel is prone to math overflow when the host
defers the timer interrupt due to overload, malfunction or malice.
This can be mitigated by checking the clocksource delta for the
maximum deferrement which is readily available. If that value is
exceeded then the code uses a slowpath function which can handle the
multiplication overflow.
This functionality is enabled unconditionally in the kernel, but made
conditional in the VDSO code. The latter is conditional because it
allows architectures to optimize the check so it is not causing
performance regressions.
On X86 this is achieved by reworking the existing check for negative
TSC deltas as a negative delta obviously exceeds the maximum
deferrement when it is evaluated as an unsigned value. That avoids two
conditionals in the hotpath and allows to hide both the negative delta
and the large delta handling in the same slow path.
- Add an initial minimal ktime_t abstraction for Rust
- The usual boring cleanups and enhancements
- Drivers:
- Boring updates to device trees and trivial enhancements in various
drivers.
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Merge tag 'timers-core-2024-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timers and timekeeping updates from Thomas Gleixner:
"Core code:
- Make timekeeping and VDSO time readouts resilent against math
overflow:
In guest context the kernel is prone to math overflow when the host
defers the timer interrupt due to overload, malfunction or malice.
This can be mitigated by checking the clocksource delta for the
maximum deferrement which is readily available. If that value is
exceeded then the code uses a slowpath function which can handle
the multiplication overflow.
This functionality is enabled unconditionally in the kernel, but
made conditional in the VDSO code. The latter is conditional
because it allows architectures to optimize the check so it is not
causing performance regressions.
On X86 this is achieved by reworking the existing check for
negative TSC deltas as a negative delta obviously exceeds the
maximum deferrement when it is evaluated as an unsigned value. That
avoids two conditionals in the hotpath and allows to hide both the
negative delta and the large delta handling in the same slow path.
- Add an initial minimal ktime_t abstraction for Rust
- The usual boring cleanups and enhancements
Drivers:
- Boring updates to device trees and trivial enhancements in various
drivers"
* tag 'timers-core-2024-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits)
clocksource/drivers/arm_arch_timer: Mark hisi_161010101_oem_info const
clocksource/drivers/timer-ti-dm: Remove an unused field in struct dmtimer
clocksource/drivers/renesas-ostm: Avoid reprobe after successful early probe
clocksource/drivers/renesas-ostm: Allow OSTM driver to reprobe for RZ/V2H(P) SoC
dt-bindings: timer: renesas: ostm: Document Renesas RZ/V2H(P) SoC
rust: time: doc: Add missing C header links
clocksource: Make the int help prompt unit readable in ncurses
hrtimer: Rename __hrtimer_hres_active() to hrtimer_hres_active()
timerqueue: Remove never used function timerqueue_node_expires()
rust: time: Add Ktime
vdso: Fix powerpc build U64_MAX undeclared error
clockevents: Convert s[n]printf() to sysfs_emit()
clocksource: Convert s[n]printf() to sysfs_emit()
clocksource: Make watchdog and suspend-timing multiplication overflow safe
timekeeping: Let timekeeping_cycles_to_ns() handle both under and overflow
timekeeping: Make delta calculation overflow safe
timekeeping: Prepare timekeeping_cycles_to_ns() for overflow safety
timekeeping: Fold in timekeeping_delta_to_ns()
timekeeping: Consolidate timekeeping helpers
timekeeping: Refactor timekeeping helpers
...
|
||
|
Linus Torvalds
|
6e5a0c30b6 |
Scheduler changes for v6.10:
- Add cpufreq pressure feedback for the scheduler
- Rework misfit load-balancing wrt. affinity restrictions
- Clean up and simplify the code around ::overutilized and
::overload access.
- Simplify sched_balance_newidle()
- Bump SCHEDSTAT_VERSION to 16 due to a cleanup of CPU_MAX_IDLE_TYPES
handling that changed the output.
- Rework & clean up <asm/vtime.h> interactions wrt. arch_vtime_task_switch()
- Reorganize, clean up and unify most of the higher level
scheduler balancing function names around the sched_balance_*()
prefix.
- Simplify the balancing flag code (sched_balance_running)
- Miscellaneous cleanups & fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
- Add cpufreq pressure feedback for the scheduler
- Rework misfit load-balancing wrt affinity restrictions
- Clean up and simplify the code around ::overutilized and
::overload access.
- Simplify sched_balance_newidle()
- Bump SCHEDSTAT_VERSION to 16 due to a cleanup of CPU_MAX_IDLE_TYPES
handling that changed the output.
- Rework & clean up <asm/vtime.h> interactions wrt arch_vtime_task_switch()
- Reorganize, clean up and unify most of the higher level
scheduler balancing function names around the sched_balance_*()
prefix
- Simplify the balancing flag code (sched_balance_running)
- Miscellaneous cleanups & fixes
* tag 'sched-core-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
sched/pelt: Remove shift of thermal clock
sched/cpufreq: Rename arch_update_thermal_pressure() => arch_update_hw_pressure()
thermal/cpufreq: Remove arch_update_thermal_pressure()
sched/cpufreq: Take cpufreq feedback into account
cpufreq: Add a cpufreq pressure feedback for the scheduler
sched/fair: Fix update of rd->sg_overutilized
sched/vtime: Do not include <asm/vtime.h> header
s390/irq,nmi: Include <asm/vtime.h> header directly
s390/vtime: Remove unused __ARCH_HAS_VTIME_TASK_SWITCH leftover
sched/vtime: Get rid of generic vtime_task_switch() implementation
sched/vtime: Remove confusing arch_vtime_task_switch() declaration
sched/balancing: Simplify the sg_status bitmask and use separate ->overloaded and ->overutilized flags
sched/fair: Rename set_rd_overutilized_status() to set_rd_overutilized()
sched/fair: Rename SG_OVERLOAD to SG_OVERLOADED
sched/fair: Rename {set|get}_rd_overload() to {set|get}_rd_overloaded()
sched/fair: Rename root_domain::overload to ::overloaded
sched/fair: Use helper functions to access root_domain::overload
sched/fair: Check root_domain::overload value before update
sched/fair: Combine EAS check with root_domain::overutilized access
sched/fair: Simplify the continue_balancing logic in sched_balance_newidle()
...
|
||
|
Linus Torvalds
|
87caef4220 |
hardening updates for 6.10-rc1
- selftests: Add str*cmp tests (Ivan Orlov)
- __counted_by: provide UAPI for _le/_be variants (Erick Archer)
- Various strncpy deprecation refactors (Justin Stitt)
- stackleak: Use a copy of soon-to-be-const sysctl table (Thomas Weißschuh)
- UBSAN: Work around i386 -regparm=3 bug with Clang prior to version 19
- Provide helper to deal with non-NUL-terminated string copying
- SCSI: Fix older string copying bugs (with new helper)
- selftests: Consolidate string helper behavioral tests
- selftests: add memcpy() fortify tests
- string: Add additional __realloc_size() annotations for "dup" helpers
- LKDTM: Fix KCFI+rodata+objtool confusion
- hardening.config: Enable KCFI
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Merge tag 'hardening-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
"The bulk of the changes here are related to refactoring and expanding
the KUnit tests for string helper and fortify behavior.
Some trivial strncpy replacements in fs/ were carried in my tree. Also
some fixes to SCSI string handling were carried in my tree since the
helper for those was introduce here. Beyond that, just little fixes
all around: objtool getting confused about LKDTM+KCFI, preparing for
future refactors (constification of sysctl tables, additional
__counted_by annotations), a Clang UBSAN+i386 crash fix, and adding
more options in the hardening.config Kconfig fragment.
Summary:
- selftests: Add str*cmp tests (Ivan Orlov)
- __counted_by: provide UAPI for _le/_be variants (Erick Archer)
- Various strncpy deprecation refactors (Justin Stitt)
- stackleak: Use a copy of soon-to-be-const sysctl table (Thomas
Weißschuh)
- UBSAN: Work around i386 -regparm=3 bug with Clang prior to
version 19
- Provide helper to deal with non-NUL-terminated string copying
- SCSI: Fix older string copying bugs (with new helper)
- selftests: Consolidate string helper behavioral tests
- selftests: add memcpy() fortify tests
- string: Add additional __realloc_size() annotations for "dup"
helpers
- LKDTM: Fix KCFI+rodata+objtool confusion
- hardening.config: Enable KCFI"
* tag 'hardening-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (29 commits)
uapi: stddef.h: Provide UAPI macros for __counted_by_{le, be}
stackleak: Use a copy of the ctl_table argument
string: Add additional __realloc_size() annotations for "dup" helpers
kunit/fortify: Fix replaced failure path to unbreak __alloc_size
hardening: Enable KCFI and some other options
lkdtm: Disable CFI checking for perms functions
kunit/fortify: Add memcpy() tests
kunit/fortify: Do not spam logs with fortify WARNs
kunit/fortify: Rename tests to use recommended conventions
init: replace deprecated strncpy with strscpy_pad
kunit/fortify: Fix mismatched kvalloc()/vfree() usage
scsi: qla2xxx: Avoid possible run-time warning with long model_num
scsi: mpi3mr: Avoid possible run-time warning with long manufacturer strings
scsi: mptfusion: Avoid possible run-time warning with long manufacturer strings
fs: ecryptfs: replace deprecated strncpy with strscpy
hfsplus: refactor copy_name to not use strncpy
reiserfs: replace deprecated strncpy with scnprintf
virt: acrn: replace deprecated strncpy with strscpy
ubsan: Avoid i386 UBSAN handler crashes with Clang
ubsan: Remove 1-element array usage in debug reporting
...
|
||
|
Linus Torvalds
|
0c9f4ac808 |
for-6.10/block-20240511
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||
|
Linus Torvalds
|
b19239143e |
Hi,
These are the changes for the TPM driver with a single major new feature: TPM bus encryption and integrity protection. The key pair on TPM side is generated from so called null random seed per power on of the machine [1]. This supports the TPM encryption of the hard drive by adding layer of protection against bus interposer attacks. Other than the pull request a few minor fixes and documentation for tpm_tis to clarify basics of TPM localities for future patch review discussions (will be extended and refined over times, just a seed). [1] https://lore.kernel.org/linux-integrity/20240429202811.13643-1-James.Bottomley@HansenPartnership.com/ BR, Jarkko -----BEGIN PGP SIGNATURE----- iJYEABYKAD4WIQRE6pSOnaBC00OEHEIaerohdGur0gUCZj0l2iAcamFya2tvLnNh a2tpbmVuQGxpbnV4LmludGVsLmNvbQAKCRAaerohdGur0m8yAP4hBjMtpgAJZ4eZ 5o9tEQJrh/1JFZJ+8HU5IKPc4RU8BAEAyyYOCtxtS/C5B95iP+LvNla0KWi0pprU HsCLULnV2Aw= =RTXJ -----END PGP SIGNATURE----- Merge tag 'tpmdd-next-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd Pull TPM updates from Jarkko Sakkinen: "These are the changes for the TPM driver with a single major new feature: TPM bus encryption and integrity protection. The key pair on TPM side is generated from so called null random seed per power on of the machine [1]. This supports the TPM encryption of the hard drive by adding layer of protection against bus interposer attacks. Other than that, a few minor fixes and documentation for tpm_tis to clarify basics of TPM localities for future patch review discussions (will be extended and refined over times, just a seed)" Link: https://lore.kernel.org/linux-integrity/20240429202811.13643-1-James.Bottomley@HansenPartnership.com/ [1] * tag 'tpmdd-next-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd: (28 commits) Documentation: tpm: Add TPM security docs toctree entry tpm: disable the TPM if NULL name changes Documentation: add tpm-security.rst tpm: add the null key name as a sysfs export KEYS: trusted: Add session encryption protection to the seal/unseal path tpm: add session encryption protection to tpm2_get_random() tpm: add hmac checks to tpm2_pcr_extend() tpm: Add the rest of the session HMAC API tpm: Add HMAC session name/handle append tpm: Add HMAC session start and end functions tpm: Add TCG mandated Key Derivation Functions (KDFs) tpm: Add NULL primary creation tpm: export the context save and load commands tpm: add buffer function to point to returned parameters crypto: lib - implement library version of AES in CFB mode KEYS: trusted: tpm2: Use struct tpm_buf for sized buffers tpm: Add tpm_buf_read_{u8,u16,u32} tpm: TPM2B formatted buffers tpm: Store the length of the tpm_buf data separately. tpm: Update struct tpm_buf documentation comments ... |
||
|
Linus Torvalds
|
cd97950cbc |
slab updates for 6.10
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Merge tag 'slab-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab updates from Vlastimil Babka:
"This time it's mostly random cleanups and fixes, with two performance
fixes that might have significant impact, but limited to systems
experiencing particular bad corner case scenarios rather than general
performance improvements.
The memcg hook changes are going through the mm tree due to
dependencies.
- Prevent stalls when reading /proc/slabinfo (Jianfeng Wang)
This fixes the long-standing problem that can happen with workloads
that have alloc/free patterns resulting in many partially used
slabs (in e.g. dentry cache). Reading /proc/slabinfo will traverse
the long partial slab list under spinlock with disabled irqs and
thus can stall other processes or even trigger the lockup
detection. The traversal is only done to count free objects so that
<active_objs> column can be reported along with <num_objs>.
To avoid affecting fast paths with another shared counter
(attempted in the past) or complex partial list traversal schemes
that allow rescheduling, the chosen solution resorts to
approximation - when the partial list is over 10000 slabs long, we
will only traverse first 5000 slabs from head and tail each and use
the average of those to estimate the whole list. Both head and tail
are used as the slabs near head to tend to have more free objects
than the slabs towards the tail.
It is expected the approximation should not break existing
/proc/slabinfo consumers. The <num_objs> field is still accurate
and reflects the overall kmem_cache footprint. The <active_objs>
was already imprecise due to cpu and percpu-partial slabs, so can't
be relied upon to determine exact cache usage. The difference
between <active_objs> and <num_objs> is mainly useful to determine
the slab fragmentation, and that will be possible even with the
approximation in place.
- Prevent allocating many slabs when a NUMA node is full (Chen Jun)
Currently, on NUMA systems with a node under significantly bigger
pressure than other nodes, the fallback strategy may result in each
kmalloc_node() that can't be safisfied from the preferred node, to
allocate a new slab on a fallback node, and not reuse the slabs
already on that node's partial list.
This is now fixed and partial lists of fallback nodes are checked
even for kmalloc_node() allocations. It's still preferred to
allocate a new slab on the requested node before a fallback, but
only with a GFP_NOWAIT attempt, which will fail quickly when the
node is under a significant memory pressure.
- More SLAB removal related cleanups (Xiu Jianfeng, Hyunmin Lee)
- Fix slub_kunit self-test with hardened freelists (Guenter Roeck)
- Mark racy accesses for KCSAN (linke li)
- Misc cleanups (Xiongwei Song, Haifeng Xu, Sangyun Kim)"
* tag 'slab-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
mm/slub: remove the check for NULL kmalloc_caches
mm/slub: create kmalloc 96 and 192 caches regardless cache size order
mm/slub: mark racy access on slab->freelist
slub: use count_partial_free_approx() in slab_out_of_memory()
slub: introduce count_partial_free_approx()
slub: Set __GFP_COMP in kmem_cache by default
mm/slub: remove duplicate initialization for early_kmem_cache_node_alloc()
mm/slub: correct comment in do_slab_free()
mm/slub, kunit: Use inverted data to corrupt kmem cache
mm/slub: simplify get_partial_node()
mm/slub: add slub_get_cpu_partial() helper
mm/slub: remove the check of !kmem_cache_has_cpu_partial()
mm/slub: Reduce memory consumption in extreme scenarios
mm/slub: mark racy accesses on slab->slabs
mm/slub: remove dummy slabinfo functions
|
||
|
Linus Torvalds
|
2e57d1d606 |
sparc32,parisc,csky: Provide one-byte and two-byte cmpxchg() support
This series provides native one-byte and two-byte cmpxchg() support
for sparc32 and parisc, courtesy of Al Viro. This support is provided
by the same hashed-array-of-locks technique used for the other atomic
operations provided for these two platforms.
This series also provides emulated one-byte cmpxchg() support for csky
using a new cmpxchg_emu_u8() function that uses a four-byte cmpxchg()
to emulate the one-byte variant.
Similar patches for emulation of one-byte cmpxchg() for arc, sh, and
xtensa have not yet received maintainer acks, so they are slated for
the v6.11 merge window.
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Merge tag 'cmpxchg.2024.05.11a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull cmpxchg updates from Paul McKenney:
"Provide one-byte and two-byte cmpxchg() support on sparc32, parisc,
and csky
This provides native one-byte and two-byte cmpxchg() support for
sparc32 and parisc, courtesy of Al Viro. This support is provided by
the same hashed-array-of-locks technique used for the other atomic
operations provided for these two platforms.
There is also emulated one-byte cmpxchg() support for csky using a new
cmpxchg_emu_u8() function that uses a four-byte cmpxchg() to emulate
the one-byte variant.
Similar patches for emulation of one-byte cmpxchg() for arc, sh, and
xtensa have not yet received maintainer acks, so they are slated for
the v6.11 merge window"
* tag 'cmpxchg.2024.05.11a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
csky: Emulate one-byte cmpxchg
lib: Add one-byte emulation function
parisc: add u16 support to cmpxchg()
parisc: add missing export of __cmpxchg_u8()
parisc: unify implementations of __cmpxchg_u{8,32,64}
parisc: __cmpxchg_u32(): lift conversion into the callers
sparc32: add __cmpxchg_u{8,16}() and teach __cmpxchg() to handle those sizes
sparc32: unify __cmpxchg_u{32,64}
sparc32: make the first argument of __cmpxchg_u64() volatile u64 *
sparc32: make __cmpxchg_u32() return u32
|
||
|
Linus Torvalds
|
c22c3e0753 |
18 hotfixes, 7 of which are cc:stable.
More fixups for this cycle's page_owner updates. And a few userfaultfd fixes. Otherwise, random singletons - see the individual changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZj6AhAAKCRDdBJ7gKXxA jsvHAQCoSRI4qM0a6j5Fs2Q+B1in+kGWTe50q5Rd755VgolEsgD8CUASDgZ2Qv7g yDAlluXMv4uvA4RqkZvDiezsENzYQw0= =MApd -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2024-05-10-13-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM fixes from Andrew Morton: "18 hotfixes, 7 of which are cc:stable. More fixups for this cycle's page_owner updates. And a few userfaultfd fixes. Otherwise, random singletons - see the individual changelogs for details" * tag 'mm-hotfixes-stable-2024-05-10-13-14' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mailmap: add entry for Barry Song selftests/mm: fix powerpc ARCH check mailmap: add entry for John Garry XArray: set the marks correctly when splitting an entry selftests/vDSO: fix runtime errors on LoongArch selftests/vDSO: fix building errors on LoongArch mm,page_owner: don't remove __GFP_NOLOCKDEP in add_stack_record_to_list fs/proc/task_mmu: fix uffd-wp confusion in pagemap_scan_pmd_entry() fs/proc/task_mmu: fix loss of young/dirty bits during pagemap scan mm/vmalloc: fix return value of vb_alloc if size is 0 mm: use memalloc_nofs_save() in page_cache_ra_order() kmsan: compiler_types: declare __no_sanitize_or_inline lib/test_xarray.c: fix error assumptions on check_xa_multi_store_adv_add() tools: fix userspace compilation with new test_xarray changes MAINTAINERS: update URL's for KEYS/KEYRINGS_INTEGRITY and TPM DEVICE DRIVER mm: page_owner: fix wrong information in dump_page_owner maple_tree: fix mas_empty_area_rev() null pointer dereference mm/userfaultfd: reset ptes when close() for wr-protected ones |
||
|
Masahiro Yamada
|
b1992c3772 |
kbuild: use $(src) instead of $(srctree)/$(src) for source directory
Kbuild conventionally uses $(obj)/ for generated files, and $(src)/ for
checked-in source files. It is merely a convention without any functional
difference. In fact, $(obj) and $(src) are exactly the same, as defined
in scripts/Makefile.build:
src := $(obj)
When the kernel is built in a separate output directory, $(src) does
not accurately reflect the source directory location. While Kbuild
resolves this discrepancy by specifying VPATH=$(srctree) to search for
source files, it does not cover all cases. For example, when adding a
header search path for local headers, -I$(srctree)/$(src) is typically
passed to the compiler.
This introduces inconsistency between upstream and downstream Makefiles
because $(src) is used instead of $(srctree)/$(src) for the latter.
To address this inconsistency, this commit changes the semantics of
$(src) so that it always points to the directory in the source tree.
Going forward, the variables used in Makefiles will have the following
meanings:
$(obj) - directory in the object tree
$(src) - directory in the source tree (changed by this commit)
$(objtree) - the top of the kernel object tree
$(srctree) - the top of the kernel source tree
Consequently, $(srctree)/$(src) in upstream Makefiles need to be replaced
with $(src).
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
|
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|
Ard Biesheuvel
|
f135440447 |
crypto: lib - implement library version of AES in CFB mode
Implement AES in CFB mode using the existing, mostly constant-time generic AES library implementation. This will be used by the TPM code to encrypt communications with TPM hardware, which is often a discrete component connected using sniffable wires or traces. While a CFB template does exist, using a skcipher is a major pain for non-performance critical synchronous crypto where the algorithm is known at compile time and the data is in contiguous buffers with valid kernel virtual addresses. Tested-by: James Bottomley <James.Bottomley@HansenPartnership.com> Reviewed-by: James Bottomley <James.Bottomley@HansenPartnership.com> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Link: https://lore.kernel.org/all/20230216201410.15010-1-James.Bottomley@HansenPartnership.com/ Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Tested-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org> |
||
|
Jakub Kicinski
|
e7073830cc |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts. Adjacent changes: drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c |
||
|
Yury Norov
|
0b2811ba11 |
bitmap: relax find_nth_bit() limitation on return value
The function claims to return the bitmap size, if Nth bit doesn't exist. This rule is violated in inline case because the fns() that is used there doesn't know anything about size of the bitmap. So, relax this requirement to '>= size', and make the outline implementation a bit cheaper. All in-tree kernel users of find_nth_bit() are safe against that. Reported-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Closes: https://lore.kernel.org/all/Zi50cAgR8nZvgLa3@yury-ThinkPad/T/#m6da806a0525e74dcc91f35e5f20766ed4e853e8a Signed-off-by: Yury Norov <yury.norov@gmail.com> |
||
|
Yury Norov
|
77db1920a8 |
lib: make test_bitops compilable into the kernel image
The test now is limited to be compiled as a module. There's no technical reason for it. Now that the test bears some performance benchmarks, it would be reasonable to run it at kernel load time, before userspace starts, to reduce possible jitter. Reviewed-by: Kuan-Wei Chiu <visitorckw@gmail.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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Kuan-Wei Chiu
|
0a2c6664e5 |
lib/test_bitops: Add benchmark test for fns()
Introduce a benchmark test for the fns(). It measures the total time taken by fns() to process 10,000 test data generated using get_random_bytes() for each n in the range [0, BITS_PER_LONG). example: test_bitops: fns: 7637268 ns CC: Andrew Morton <akpm@linux-foundation.org> CC: Rasmus Villemoes <linux@rasmusvillemoes.dk> CC: David Laight <David.Laight@aculab.com> Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Suggested-by: Yury Norov <yury.norov@gmail.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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Kent Overstreet
|
4c5b7294de |
closures: closure_sync_timeout()
Add a new variant of closure_sync_timeout() that takes a timeout. Note that when this returns -ETIME the closure will still be waiting on something, i.e. it's not safe to return if you've got a stack allocated closure. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
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Andy Shevchenko
|
22bcc915ae |
kfifo: don't use "proxy" headers
Update header inclusions to follow IWYU (Include What You Use) principle. Link: https://lkml.kernel.org/r/20240423192529.3249134-4-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Alain Volmat <alain.volmat@foss.st.com> Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Cc: Chen-Yu Tsai <wens@csie.org> Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl> Cc: Jernej Skrabec <jernej.skrabec@gmail.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Patrice Chotard <patrice.chotard@foss.st.com> Cc: Rob Herring <robh@kernel.org> Cc: Samuel Holland <samuel@sholland.org> Cc: Sean Wang <sean.wang@mediatek.com> Cc: Sean Young <sean@mess.org> Cc: Stefani Seibold <stefani@seibold.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Florian Fainelli
|
0d5044b4e7 |
lib: Allow for the DIM library to be modular
Allow the Dynamic Interrupt Moderation (DIM) library to be built as a module. This is particularly useful in an Android GKI (Google Kernel Image) configuration where everything is built as a module, including Ethernet controller drivers. Having to build DIMLIB into the kernel image with potentially no user is wasteful. Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com> Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com> Link: https://lore.kernel.org/r/20240506175040.410446-1-florian.fainelli@broadcom.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Scott Mayhew
|
5496b9b77d |
kunit: bail out early in __kunit_test_suites_init() if there are no suites to test
Commit |
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Ivan Orlov
|
a96a394577 |
kunit: string-stream-test: use KUNIT_DEFINE_ACTION_WRAPPER
Use KUNIT_DEFINE_ACTION_WRAPPER macro to define the 'kfree' and 'string_stream_destroy' wrappers for kunit_add_action. Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com> Reviewed-by: Rae Moar <rmoar@google.com> Acked-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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David Gow
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4b513a02fd |
kunit: test: Move fault tests behind KUNIT_FAULT_TEST Kconfig option
The NULL dereference tests in kunit_fault deliberately trigger a kernel BUG(), and therefore print the associated stack trace, even when the test passes. This is both annoying (as it bloats the test output), and can confuse some test harnesses, which assume any BUG() is a failure. Allow these tests to be specifically disabled (without disabling all of KUnit's other tests), by placing them behind the CONFIG_KUNIT_FAULT_TEST Kconfig option. This is enabled by default, but can be set to 'n' to disable the test. An empty 'kunit_fault' suite is left behind, which will automatically be marked 'skipped'. As the fault tests already were disabled under UML (as they weren't compatible with its fault handling), we can simply adapt those conditions, and add a dependency on !UML for our new option. Suggested-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/all/928249cc-e027-4f7f-b43f-502f99a1ea63@roeck-us.net/ Fixes: 82b0beff3497 ("kunit: Add tests for fault") Signed-off-by: David Gow <davidgow@google.com> Reviewed-by: Mickaël Salaün <mic@digikod.net> Reviewed-by: Rae Moar <rmoar@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Wander Lairson Costa
|
fabd480b72 |
kunit: unregister the device on error
kunit_init_device() should unregister the device on bus register error,
but mistakenly it tries to unregister the bus.
Unregister the device instead of the bus.
Signed-off-by: Wander Lairson Costa <wander@redhat.com>
Fixes:
|
||
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David Gow
|
1eb69ded80 |
kunit: Fix race condition in try-catch completion
KUnit's try-catch infrastructure now uses vfork_done, which is always
set to a valid completion when a kthread is created, but which is set to
NULL once the thread terminates. This creates a race condition, where
the kthread exits before we can wait on it.
Keep a copy of vfork_done, which is taken before we wake_up_process()
and so valid, and wait on that instead.
Fixes: 93533996100c ("kunit: Handle test faults")
Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Closes: https://lore.kernel.org/lkml/20240410102710.35911-1-naresh.kamboju@linaro.org/
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Acked-by: Mickaël Salaün <mic@digikod.net>
Signed-off-by: David Gow <davidgow@google.com>
Reviewed-by: Rae Moar <rmoar@google.com>
Tested-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
|
||
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Mickaël Salaün
|
170c31737c |
kunit: Add tests for fault
Add a test case to check NULL pointer dereference and make sure it would result as a failed test. The full kunit_fault test suite is marked as skipped when run on UML because it would result to a kernel panic. Tested with: ./tools/testing/kunit/kunit.py run --arch x86_64 kunit_fault ./tools/testing/kunit/kunit.py run --arch arm64 \ --cross_compile=aarch64-linux-gnu- kunit_fault Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Rae Moar <rmoar@google.com> Cc: Shuah Khan <skhan@linuxfoundation.org> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Mickaël Salaün <mic@digikod.net> Link: https://lore.kernel.org/r/20240408074625.65017-8-mic@digikod.net Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Mickaël Salaün
|
8bd5d74bab |
kunit: Print last test location on fault
This helps identify the location of test faults with opportunistic calls to _KUNIT_SAVE_LOC(). This can be useful while writing tests or debugging them. It is possible to call KUNIT_SUCCESS() to explicit save last location. Cc: Brendan Higgins <brendanhiggins@google.com> Cc: David Gow <davidgow@google.com> Cc: Rae Moar <rmoar@google.com> Cc: Shuah Khan <skhan@linuxfoundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Mickaël Salaün <mic@digikod.net> Link: https://lore.kernel.org/r/20240408074625.65017-7-mic@digikod.net Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Mickaël Salaün
|
70585f05fb |
kunit: Fix KUNIT_SUCCESS() calls in iov_iter tests
Fix KUNIT_SUCCESS() calls to pass a test argument. This is a no-op for now because this macro does nothing, but it will be required for the next commit. Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Rae Moar <rmoar@google.com> Cc: Shuah Khan <skhan@linuxfoundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Mickaël Salaün <mic@digikod.net> Link: https://lore.kernel.org/r/20240408074625.65017-6-mic@digikod.net Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Mickaël Salaün
|
3a35c13007 |
kunit: Handle test faults
Previously, when a kernel test thread crashed (e.g. NULL pointer dereference, general protection fault), the KUnit test hanged for 30 seconds and exited with a timeout error. Fix this issue by waiting on task_struct->vfork_done instead of the custom kunit_try_catch.try_completion, and track the execution state by initially setting try_result with -EINTR and only setting it to 0 if the test passed. Fix kunit_generic_run_threadfn_adapter() signature by returning 0 instead of calling kthread_complete_and_exit(). Because thread's exit code is never checked, always set it to 0 to make it clear. To make this explicit, export kthread_exit() for KUnit tests built as module. Fix the -EINTR error message, which couldn't be reached until now. This is tested with a following patch. Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Shuah Khan <skhan@linuxfoundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: David Gow <davidgow@google.com> Tested-by: Rae Moar <rmoar@google.com> Signed-off-by: Mickaël Salaün <mic@digikod.net> Link: https://lore.kernel.org/r/20240408074625.65017-5-mic@digikod.net Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Mickaël Salaün
|
53026ff63b |
kunit: Fix timeout message
The exit code is always checked, so let's properly handle the -ETIMEDOUT error code. Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Shuah Khan <skhan@linuxfoundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: David Gow <davidgow@google.com> Reviewed-by: Rae Moar <rmoar@google.com> Signed-off-by: Mickaël Salaün <mic@digikod.net> Link: https://lore.kernel.org/r/20240408074625.65017-4-mic@digikod.net Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Mickaël Salaün
|
f8aa1b98ce |
kunit: Fix kthread reference
There is a race condition when a kthread finishes after the deadline and
before the call to kthread_stop(), which may lead to use after free.
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Fixes:
|
||
|
Mickaël Salaün
|
cde5e1b4a9 |
kunit: Handle thread creation error
Previously, if a thread creation failed (e.g. -ENOMEM), the function was called (kunit_catch_run_case or kunit_catch_run_case_cleanup) without marking the test as failed. Instead, fill try_result with the error code returned by kthread_run(), which will mark the test as failed and print "internal error occurred...". Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Shuah Khan <skhan@linuxfoundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Mickaël Salaün <mic@digikod.net> Link: https://lore.kernel.org/r/20240408074625.65017-2-mic@digikod.net Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Long Li
|
ba591801a3 |
xarray: inline xas_descend to improve performance
The commit |
||
|
Matthew Wilcox (Oracle)
|
2a0774c288 |
XArray: set the marks correctly when splitting an entry
If we created a new node to replace an entry which had search marks set,
we were setting the search mark on every entry in that node. That works
fine when we're splitting to order 0, but when splitting to a larger
order, we must not set the search marks on the sibling entries.
Link: https://lkml.kernel.org/r/20240501153120.4094530-1-willy@infradead.org
Fixes:
|
||
|
Luis Chamberlain
|
2aaba39e78 |
lib/test_xarray.c: fix error assumptions on check_xa_multi_store_adv_add()
While testing lib/test_xarray in userspace I've noticed we can fail with:
make -C tools/testing/radix-tree
./tools/testing/radix-tree/xarray
BUG at check_xa_multi_store_adv_add:749
xarray: 0x55905fb21a00x head 0x55905fa1d8e0x flags 0 marks 0 0 0
0: 0x55905fa1d8e0x
xarray: ../../../lib/test_xarray.c:749: check_xa_multi_store_adv_add: Assertion `0' failed.
Aborted
We get a failure with a BUG_ON(), and that is because we actually can
fail due to -ENOMEM, the check in xas_nomem() will fix this for us so
it makes no sense to expect no failure inside the loop. So modify the
check and since this is also useful for instructional purposes clarify
the situation.
The check for XA_BUG_ON(xa, xa_load(xa, index) != p) is already done
at the end of the loop so just remove the bogus on inside the loop.
With this we now pass the test in both kernel and userspace:
In userspace:
./tools/testing/radix-tree/xarray
XArray: 149092856 of 149092856 tests passed
In kernel space:
XArray: 148257077 of 148257077 tests passed
Link: https://lkml.kernel.org/r/20240423192221.301095-3-mcgrof@kernel.org
Fixes:
|
||
|
Liam R. Howlett
|
955a923d28 |
maple_tree: fix mas_empty_area_rev() null pointer dereference
Currently the code calls mas_start() followed by mas_data_end() if the
maple state is MA_START, but mas_start() may return with the maple state
node == NULL. This will lead to a null pointer dereference when checking
information in the NULL node, which is done in mas_data_end().
Avoid setting the offset if there is no node by waiting until after the
maple state is checked for an empty or single entry state.
A user could trigger the events to cause a kernel oops by unmapping all
vmas to produce an empty maple tree, then mapping a vma that would cause
the scenario described above.
Link: https://lkml.kernel.org/r/20240422203349.2418465-1-Liam.Howlett@oracle.com
Fixes:
|
||
|
Linus Torvalds
|
b9158815de |
Char/Misc driver fixes for 6.9-rc7
Here are some small char/misc/other driver fixes and new device ids for 6.9-rc7 that resolve some reported problems. Included in here are: - iio driver fixes - mei driver fix and new device ids - dyndbg bugfix - pvpanic-pci driver bugfix - slimbus driver bugfix - fpga new device id All have been in linux-next with no reported problems. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZjdD2Q8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+yk38wCeJeUXW4/yQ4BTj7cHir0aOowVs+UAnAxCUwzt NpooaVg3v9tzLtvAOp1O =YfmA -----END PGP SIGNATURE----- Merge tag 'char-misc-6.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver fixes from Greg KH: "Here are some small char/misc/other driver fixes and new device ids for 6.9-rc7 that resolve some reported problems. Included in here are: - iio driver fixes - mei driver fix and new device ids - dyndbg bugfix - pvpanic-pci driver bugfix - slimbus driver bugfix - fpga new device id All have been in linux-next with no reported problems" * tag 'char-misc-6.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: slimbus: qcom-ngd-ctrl: Add timeout for wait operation dyndbg: fix old BUG_ON in >control parser misc/pvpanic-pci: register attributes via pci_driver fpga: dfl-pci: add PCI subdevice ID for Intel D5005 card mei: me: add lunar lake point M DID mei: pxp: match against PCI_CLASS_DISPLAY_OTHER iio:imu: adis16475: Fix sync mode setting iio: accel: mxc4005: Reset chip on probe() and resume() iio: accel: mxc4005: Interrupt handling fixes dt-bindings: iio: health: maxim,max30102: fix compatible check iio: pressure: Fixes SPI support for BMP3xx devices iio: pressure: Fixes BME280 SPI driver data |
||
|
Al Viro
|
b8c873edbf |
wrapper for access to ->bd_partno
On the next step it's going to get folded into a field where flags will go. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
||
|
Al Viro
|
3f9b8fb46e |
Use bdev_is_paritition() instead of open-coding it
Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> |
||
|
Jakub Kicinski
|
e958da0ddb |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: include/linux/filter.h kernel/bpf/core.c |
||
|
Linus Torvalds
|
545c494465 |
Including fixes from bpf.
Relatively calm week, likely due to public holiday in most places.
No known outstanding regressions.
Current release - regressions:
- rxrpc: fix wrong alignmask in __page_frag_alloc_align()
- eth: e1000e: change usleep_range to udelay in PHY mdic access
Previous releases - regressions:
- gro: fix udp bad offset in socket lookup
- bpf: fix incorrect runtime stat for arm64
- tipc: fix UAF in error path
- netfs: fix a potential infinite loop in extract_user_to_sg()
- eth: ice: ensure the copied buf is NUL terminated
- eth: qeth: fix kernel panic after setting hsuid
Previous releases - always broken:
- bpf:
- verifier: prevent userspace memory access
- xdp: use flags field to disambiguate broadcast redirect
- bridge: fix multicast-to-unicast with fraglist GSO
- mptcp: ensure snd_nxt is properly initialized on connect
- nsh: fix outer header access in nsh_gso_segment().
- eth: bcmgenet: fix racing registers access
- eth: vxlan: fix stats counters.
Misc:
- a bunch of MAINTAINERS file updates
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bpf.
Relatively calm week, likely due to public holiday in most places. No
known outstanding regressions.
Current release - regressions:
- rxrpc: fix wrong alignmask in __page_frag_alloc_align()
- eth: e1000e: change usleep_range to udelay in PHY mdic access
Previous releases - regressions:
- gro: fix udp bad offset in socket lookup
- bpf: fix incorrect runtime stat for arm64
- tipc: fix UAF in error path
- netfs: fix a potential infinite loop in extract_user_to_sg()
- eth: ice: ensure the copied buf is NUL terminated
- eth: qeth: fix kernel panic after setting hsuid
Previous releases - always broken:
- bpf:
- verifier: prevent userspace memory access
- xdp: use flags field to disambiguate broadcast redirect
- bridge: fix multicast-to-unicast with fraglist GSO
- mptcp: ensure snd_nxt is properly initialized on connect
- nsh: fix outer header access in nsh_gso_segment().
- eth: bcmgenet: fix racing registers access
- eth: vxlan: fix stats counters.
Misc:
- a bunch of MAINTAINERS file updates"
* tag 'net-6.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (45 commits)
MAINTAINERS: mark MYRICOM MYRI-10G as Orphan
MAINTAINERS: remove Ariel Elior
net: gro: add flush check in udp_gro_receive_segment
net: gro: fix udp bad offset in socket lookup by adding {inner_}network_offset to napi_gro_cb
ipv4: Fix uninit-value access in __ip_make_skb()
s390/qeth: Fix kernel panic after setting hsuid
vxlan: Pull inner IP header in vxlan_rcv().
tipc: fix a possible memleak in tipc_buf_append
tipc: fix UAF in error path
rxrpc: Clients must accept conn from any address
net: core: reject skb_copy(_expand) for fraglist GSO skbs
net: bridge: fix multicast-to-unicast with fraglist GSO
mptcp: ensure snd_nxt is properly initialized on connect
e1000e: change usleep_range to udelay in PHY mdic access
net: dsa: mv88e6xxx: Fix number of databases for 88E6141 / 88E6341
cxgb4: Properly lock TX queue for the selftest.
rxrpc: Fix using alignmask being zero for __page_frag_alloc_align()
vxlan: Add missing VNI filter counter update in arp_reduce().
vxlan: Fix racy device stats updates.
net: qede: use return from qede_parse_actions()
...
|
||
|
Kees Cook
|
7d78a77733 |
string: Add additional __realloc_size() annotations for "dup" helpers
Several other "dup"-style interfaces could use the __realloc_size() attribute. (As a reminder to myself and others: "realloc" is used here instead of "alloc" because the "alloc_size" attribute implies that the memory contents are uninitialized. Since we're copying contents into the resulting allocation, it must use "realloc_size" to avoid confusing the compiler's optimization passes.) Add KUnit test coverage where possible. (KUnit still does not have the ability to manipulate userspace memory.) Reviewed-by: Andy Shevchenko <andy@kernel.org> Link: https://lore.kernel.org/r/20240502145218.it.729-kees@kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Ard Biesheuvel
|
377d909511 |
vmlinux: Avoid weak reference to notes section
Weak references are references that are permitted to remain unsatisfied in the final link. This means they cannot be implemented using place relative relocations, resulting in GOT entries when using position independent code generation. The notes section should always exist, so the weak annotations can be omitted. Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> |
||
|
Thomas Zimmermann
|
b0a835db17 |
Merge drm/drm-next into drm-misc-next
Backmerging to get DRM fixes from v6.9-rc6. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> |
||
|
Jocelyn Falempe
|
b94605a388 |
lib/fonts: Allow to select fonts for drm_panic
drm_panic has been introduced recently, and uses the same fonts as FRAMEBUFFER_CONSOLE. Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20240419132243.154466-1-jfalempe@redhat.com |
||
|
Kees Cook
|
74df22453c |
kunit/fortify: Fix replaced failure path to unbreak __alloc_size
The __alloc_size annotation for kmemdup() was getting disabled under
KUnit testing because the replaced fortify_panic macro implementation
was using "return NULL" as a way to survive the sanity checking. But
having the chance to return NULL invalidated __alloc_size, so kmemdup
was not passing the __builtin_dynamic_object_size() tests any more:
[23:26:18] [PASSED] fortify_test_alloc_size_kmalloc_const
[23:26:19] # fortify_test_alloc_size_kmalloc_dynamic: EXPECTATION FAILED at lib/fortify_kunit.c:265
[23:26:19] Expected __builtin_dynamic_object_size(p, 1) == expected, but
[23:26:19] __builtin_dynamic_object_size(p, 1) == -1 (0xffffffffffffffff)
[23:26:19] expected == 11 (0xb)
[23:26:19] __alloc_size() not working with __bdos on kmemdup("hello there", len, gfp)
[23:26:19] [FAILED] fortify_test_alloc_size_kmalloc_dynamic
Normal builds were not affected: __alloc_size continued to work there.
Use a zero-sized allocation instead, which allows __alloc_size to
behave.
Fixes:
|
||
|
Andrii Nakryiko
|
78d0b16127 |
objpool: cache nr_possible_cpus() and avoid caching nr_cpu_ids
Profiling shows that calling nr_possible_cpus() in objpool_pop() takes a noticeable amount of CPU (when profiled on 80-core machine), as we need to recalculate number of set bits in a CPU bit mask. This number can't change, so there is no point in paying the price for recalculating it. As such, cache this value in struct objpool_head and use it in objpool_pop(). On the other hand, cached pool->nr_cpus isn't necessary, as it's not used in hot path and is also a pretty trivial value to retrieve. So drop pool->nr_cpus in favor of using nr_cpu_ids everywhere. This way the size of struct objpool_head remains the same, which is a nice bonus. Same BPF selftests benchmarks were used to evaluate the effect. Using changes in previous patch (inlining of objpool_pop/objpool_push) as baseline, here are the differences: BASELINE ======== kretprobe : 9.937 ± 0.174M/s kretprobe-multi: 10.440 ± 0.108M/s AFTER ===== kretprobe : 10.106 ± 0.120M/s (+1.7%) kretprobe-multi: 10.515 ± 0.180M/s (+0.7%) Link: https://lore.kernel.org/all/20240424215214.3956041-3-andrii@kernel.org/ Cc: Matt (Qiang) Wu <wuqiang.matt@bytedance.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> |
||
|
Andrii Nakryiko
|
a3b00f10da |
objpool: enable inlining objpool_push() and objpool_pop() operations
objpool_push() and objpool_pop() are very performance-critical functions and can be called very frequently in kretprobe triggering path. As such, it makes sense to allow compiler to inline them completely to eliminate function calls overhead. Luckily, their logic is quite well isolated and doesn't have any sprawling dependencies. This patch moves both objpool_push() and objpool_pop() into include/linux/objpool.h and marks them as static inline functions, enabling inlining. To avoid anyone using internal helpers (objpool_try_get_slot, objpool_try_add_slot), rename them to use leading underscores. We used kretprobe microbenchmark from BPF selftests (bench trig-kprobe and trig-kprobe-multi benchmarks) running no-op BPF kretprobe/kretprobe.multi programs in a tight loop to evaluate the effect. BPF own overhead in this case is minimal and it mostly stresses the rest of in-kernel kretprobe infrastructure overhead. Results are in millions of calls per second. This is not super scientific, but shows the trend nevertheless. BEFORE ====== kretprobe : 9.794 ± 0.086M/s kretprobe-multi: 10.219 ± 0.032M/s AFTER ===== kretprobe : 9.937 ± 0.174M/s (+1.5%) kretprobe-multi: 10.440 ± 0.108M/s (+2.2%) Link: https://lore.kernel.org/all/20240424215214.3956041-2-andrii@kernel.org/ Cc: Matt (Qiang) Wu <wuqiang.matt@bytedance.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> |
||
|
Kees Cook
|
26f812ba75 |
kunit/fortify: Add memcpy() tests
Add fortify tests for memcpy() and memmove(). This can use a similar method to the fortify_panic() replacement, only we can do it for what was the WARN_ONCE(), which can be redefined. Since this is primarily testing the fortify behaviors of the memcpy() and memmove() defenses, the tests for memcpy() and memmove() are identical. Link: https://lore.kernel.org/r/20240429194342.2421639-3-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Kees Cook
|
091f79e8de |
kunit/fortify: Do not spam logs with fortify WARNs
When running KUnit fortify tests, we're already doing precise tracking of which warnings are getting hit. Don't fill the logs with WARNs unless we've been explicitly built with DEBUG enabled. Link: https://lore.kernel.org/r/20240429194342.2421639-2-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Kees Cook
|
a0d6677ec3 |
kunit/fortify: Rename tests to use recommended conventions
The recommended conventions for KUnit tests is ${module}_test_${what}.
Adjust the fortify tests to match.
Link: https://lore.kernel.org/r/20240429194342.2421639-1-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
|
||
|
Jim Cromie
|
00e7d3bea2 |
dyndbg: fix old BUG_ON in >control parser
Fix a BUG_ON from 2009. Even if it looks "unreachable" (I didn't really look), lets make sure by removing it, doing pr_err and return -EINVAL instead. Cc: stable <stable@kernel.org> Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Link: https://lore.kernel.org/r/20240429193145.66543-2-jim.cromie@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Jakub Kicinski
|
89de2db193 |
bpf-next-for-netdev
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZi9+AAAKCRDbK58LschI g0nEAP487m7L0nLVriC2oIOWsi29tklW3etm6DO7gmGRGIHgrgEAnMyV1xBj3bGj v6jJwDcybCym1hLx+1x1JCZ4eoAFswE= =xbna -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2024-04-29 We've added 147 non-merge commits during the last 32 day(s) which contain a total of 158 files changed, 9400 insertions(+), 2213 deletions(-). The main changes are: 1) Add an internal-only BPF per-CPU instruction for resolving per-CPU memory addresses and implement support in x86 BPF JIT. This allows inlining per-CPU array and hashmap lookups and the bpf_get_smp_processor_id() helper, from Andrii Nakryiko. 2) Add BPF link support for sk_msg and sk_skb programs, from Yonghong Song. 3) Optimize x86 BPF JIT's emit_mov_imm64, and add support for various atomics in bpf_arena which can be JITed as a single x86 instruction, from Alexei Starovoitov. 4) Add support for passing mark with bpf_fib_lookup helper, from Anton Protopopov. 5) Add a new bpf_wq API for deferring events and refactor sleepable bpf_timer code to keep common code where possible, from Benjamin Tissoires. 6) Fix BPF_PROG_TEST_RUN infra with regards to bpf_dummy_struct_ops programs to check when NULL is passed for non-NULLable parameters, from Eduard Zingerman. 7) Harden the BPF verifier's and/or/xor value tracking, from Harishankar Vishwanathan. 8) Introduce crypto kfuncs to make BPF programs able to utilize the kernel crypto subsystem, from Vadim Fedorenko. 9) Various improvements to the BPF instruction set standardization doc, from Dave Thaler. 10) Extend libbpf APIs to partially consume items from the BPF ringbuffer, from Andrea Righi. 11) Bigger batch of BPF selftests refactoring to use common network helpers and to drop duplicate code, from Geliang Tang. 12) Support bpf_tail_call_static() helper for BPF programs with GCC 13, from Jose E. Marchesi. 13) Add bpf_preempt_{disable,enable}() kfuncs in order to allow a BPF program to have code sections where preemption is disabled, from Kumar Kartikeya Dwivedi. 14) Allow invoking BPF kfuncs from BPF_PROG_TYPE_SYSCALL programs, from David Vernet. 15) Extend the BPF verifier to allow different input maps for a given bpf_for_each_map_elem() helper call in a BPF program, from Philo Lu. 16) Add support for PROBE_MEM32 and bpf_addr_space_cast instructions for riscv64 and arm64 JITs to enable BPF Arena, from Puranjay Mohan. 17) Shut up a false-positive KMSAN splat in interpreter mode by unpoison the stack memory, from Martin KaFai Lau. 18) Improve xsk selftest coverage with new tests on maximum and minimum hardware ring size configurations, from Tushar Vyavahare. 19) Various ReST man pages fixes as well as documentation and bash completion improvements for bpftool, from Rameez Rehman & Quentin Monnet. 20) Fix libbpf with regards to dumping subsequent char arrays, from Quentin Deslandes. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (147 commits) bpf, docs: Clarify PC use in instruction-set.rst bpf_helpers.h: Define bpf_tail_call_static when building with GCC bpf, docs: Add introduction for use in the ISA Internet Draft selftests/bpf: extend BPF_SOCK_OPS_RTT_CB test for srtt and mrtt_us bpf: add mrtt and srtt as BPF_SOCK_OPS_RTT_CB args selftests/bpf: dummy_st_ops should reject 0 for non-nullable params bpf: check bpf_dummy_struct_ops program params for test runs selftests/bpf: do not pass NULL for non-nullable params in dummy_st_ops selftests/bpf: adjust dummy_st_ops_success to detect additional error bpf: mark bpf_dummy_struct_ops.test_1 parameter as nullable selftests/bpf: Add ring_buffer__consume_n test. bpf: Add bpf_guard_preempt() convenience macro selftests: bpf: crypto: add benchmark for crypto functions selftests: bpf: crypto skcipher algo selftests bpf: crypto: add skcipher to bpf crypto bpf: make common crypto API for TC/XDP programs bpf: update the comment for BTF_FIELDS_MAX selftests/bpf: Fix wq test. selftests/bpf: Use make_sockaddr in test_sock_addr selftests/bpf: Use connect_to_addr in test_sock_addr ... ==================== Link: https://lore.kernel.org/r/20240429131657.19423-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jakub Kicinski
|
b2ff42c6d3 |
bpf-for-netdev
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZiwdfQAKCRDbK58LschI g1oqAP9mjayeIHCfYMQZa2eevy1PmVlgdNdFdMDWZFS/pHv9cgD/ZdmGzbUDKCAQ Y/KiTajitZw3kxtHX45v8/Ugtlsh9Qg= =Ewiw -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf Daniel Borkmann says: ==================== pull-request: bpf 2024-04-26 We've added 12 non-merge commits during the last 22 day(s) which contain a total of 14 files changed, 168 insertions(+), 72 deletions(-). The main changes are: 1) Fix BPF_PROBE_MEM in verifier and JIT to skip loads from vsyscall page, from Puranjay Mohan. 2) Fix a crash in XDP with devmap broadcast redirect when the latter map is in process of being torn down, from Toke Høiland-Jørgensen. 3) Fix arm64 and riscv64 BPF JITs to properly clear start time for BPF program runtime stats, from Xu Kuohai. 4) Fix a sockmap KCSAN-reported data race in sk_psock_skb_ingress_enqueue, from Jason Xing. 5) Fix BPF verifier error message in resolve_pseudo_ldimm64, from Anton Protopopov. 6) Fix missing DEBUG_INFO_BTF_MODULES Kconfig menu item, from Andrii Nakryiko. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: selftests/bpf: Test PROBE_MEM of VSYSCALL_ADDR on x86-64 bpf, x86: Fix PROBE_MEM runtime load check bpf: verifier: prevent userspace memory access xdp: use flags field to disambiguate broadcast redirect arm32, bpf: Reimplement sign-extension mov instruction riscv, bpf: Fix incorrect runtime stats bpf, arm64: Fix incorrect runtime stats bpf: Fix a verifier verbose message bpf, skmsg: Fix NULL pointer dereference in sk_psock_skb_ingress_enqueue MAINTAINERS: bpf: Add Lehui and Puranjay as riscv64 reviewers MAINTAINERS: Update email address for Puranjay Mohan bpf, kconfig: Fix DEBUG_INFO_BTF_MODULES Kconfig definition ==================== Link: https://lore.kernel.org/r/20240426224248.26197-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Kees Cook
|
998b18072c |
kunit/fortify: Fix mismatched kvalloc()/vfree() usage
The kv*() family of tests were accidentally freeing with vfree() instead
of kvfree(). Use kvfree() instead.
Fixes:
|
||
|
Linus Torvalds
|
e6ebf01172 |
11 hotfixes. 8 are cc:stable and the remaining 3 (nice ratio!) address
post-6.8 issues or aren't considered suitable for backporting. All except one of these are for MM. I see no particular theme - it's singletons all over. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZiwPZwAKCRDdBJ7gKXxA jmcQAPkB6UT/rBUMvFZb1dom9R6SDYl5ZBr20Vj1HvfakCLxmQEAqEd0N7QoWvKS hKNCMDujiEKqDUWeUaJen4cqXFFE2Qg= =1wP7 -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2024-04-26-13-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "11 hotfixes. 8 are cc:stable and the remaining 3 (nice ratio!) address post-6.8 issues or aren't considered suitable for backporting. All except one of these are for MM. I see no particular theme - it's singletons all over" * tag 'mm-hotfixes-stable-2024-04-26-13-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm/hugetlb: fix DEBUG_LOCKS_WARN_ON(1) when dissolve_free_hugetlb_folio() selftests: mm: protection_keys: save/restore nr_hugepages value from launch script stackdepot: respect __GFP_NOLOCKDEP allocation flag hugetlb: check for anon_vma prior to folio allocation mm: zswap: fix shrinker NULL crash with cgroup_disable=memory mm: turn folio_test_hugetlb into a PageType mm: support page_mapcount() on page_has_type() pages mm: create FOLIO_FLAG_FALSE and FOLIO_TYPE_OPS macros mm/hugetlb: fix missing hugetlb_lock for resv uncharge selftests: mm: fix unused and uninitialized variable warning selftests/harness: remove use of LINE_MAX |
||
|
David Howells
|
6a30653b60 |
Fix a potential infinite loop in extract_user_to_sg()
Fix extract_user_to_sg() so that it will break out of the loop if iov_iter_extract_pages() returns 0 rather than looping around forever. [Note that I've included two fixes lines as the function got moved to a different file and renamed] Fixes: |
||
|
linke li
|
6ad0d7e0f4 |
sbitmap: use READ_ONCE to access map->word
In __sbitmap_queue_get_batch(), map->word is read several times, and update atomically using atomic_long_try_cmpxchg(). But the first two read of map->word is not protected. This patch moves the statement val = READ_ONCE(map->word) forward, eliminating unprotected accesses to map->word within the function. It is aimed at reducing the number of benign races reported by KCSAN in order to focus future debugging effort on harmful races. Signed-off-by: linke li <lilinke99@qq.com> Link: https://lore.kernel.org/r/tencent_0B517C25E519D3D002194E8445E86C04AD0A@qq.com Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Arnd Bergmann
|
3ef3a05ba6 |
test_hexdump: avoid string truncation warning
gcc can warn when a string is too long to fit into the strncpy()
destination buffer, as it is here depending on the function arguments:
inlined from 'test_hexdump_prepare_test.constprop' at /home/arnd/arm-soc/lib/test_hexdump.c:116:3:
include/linux/fortify-string.h:108:33: error: '__builtin_strncpy' output truncated copying between 0 and 32 bytes from a string of length 32 [-Werror=stringop-truncation]
108 | #define __underlying_strncpy __builtin_strncpy
| ^
include/linux/fortify-string.h:187:16: note: in expansion of macro '__underlying_strncpy'
187 | return __underlying_strncpy(p, q, size);
| ^~~~~~~~~~~~~~~~~~~~
The intention here is to copy exactly 'l' bytes without any padding or
NUL-termination, so the most logical change is to use memcpy(), just as
a previous change adapted the other output from strncpy() to memcpy().
Link: https://lkml.kernel.org/r/20240409140059.3806717-2-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Justin Stitt <justinstitt@google.com>
Cc: Alexey Starikovskiy <astarikovskiy@suse.de>
Cc: Bob Moore <robert.moore@intel.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Len Brown <lenb@kernel.org>
Cc: Lin Ming <ming.m.lin@intel.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nicolas@fjasle.eu>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: "Richard Russon (FlatCap)" <ldm@flatcap.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Andy Shevchenko
|
3cc98aa11e |
devres: don't use "proxy" headers
Update header inclusions to follow IWYU (Include What You Use) principle. Link: https://lkml.kernel.org/r/20240403104820.557487-3-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Philipp Stanner <pstanner@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Andy Shevchenko
|
f36c54f3ce |
devres: switch to use dev_err_probe() for unification
Patch series "devres: A couple of cleanups". A couple of ad-hoc cleanups. No functional changes intended. This patch (of 2): The devm_*() APIs are supposed to be called during the ->probe() stage. Many drivers (especially new ones) have switched to use dev_err_probe() for error messaging for the sake of unification. Let's do the same in the devres APIs. Link: https://lkml.kernel.org/r/20240403104820.557487-1-andriy.shevchenko@linux.intel.com Link: https://lkml.kernel.org/r/20240403104820.557487-2-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Philipp Stanner <pstanner@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Niklas Schnelle
|
b157f0e97e |
kgdb: add HAS_IOPORT dependency
In a future patch HAS_IOPORT=n will disable inb()/outb() and friends at compile time. We thus need to add HAS_IOPORT as dependency for those drivers using them. Link: https://lkml.kernel.org/r/20240403132547.762429-2-schnelle@linux.ibm.com Co-developed-by: Arnd Bergmann <arnd@kernel.org> Signed-off-by: Arnd Bergmann <arnd@kernel.org> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Uwe Kleine-König
|
5ef6dc08cf |
lib/build_OID_registry: don't mention the full path of the script in output
This change strips the full path of the script generating lib/oid_registry_data.c to just lib/build_OID_registry. The motivation for this change is Yocto emitting a build warning File /usr/src/debug/linux-lxatac/6.7-r0/lib/oid_registry_data.c in package linux-lxatac-src contains reference to TMPDIR [buildpaths] So this change brings us one step closer to make the build result reproducible independent of the build path. Link: https://lkml.kernel.org/r/20240313211957.884561-2-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kairui Song
|
6758c1128c |
mm/filemap: optimize filemap folio adding
Instead of doing multiple tree walks, do one optimism range check with
lock hold, and exit if raced with another insertion. If a shadow exists,
check it with a new xas_get_order helper before releasing the lock to
avoid redundant tree walks for getting its order.
Drop the lock and do the allocation only if a split is needed.
In the best case, it only need to walk the tree once. If it needs to
alloc and split, 3 walks are issued (One for first ranged conflict check
and order retrieving, one for the second check after allocation, one for
the insert after split).
Testing with 4K pages, in an 8G cgroup, with 16G brd as block device:
echo 3 > /proc/sys/vm/drop_caches
fio -name=cached --numjobs=16 --filename=/mnt/test.img \
--buffered=1 --ioengine=mmap --rw=randread --time_based \
--ramp_time=30s --runtime=5m --group_reporting
Before:
bw ( MiB/s): min= 1027, max= 3520, per=100.00%, avg=2445.02, stdev=18.90, samples=8691
iops : min=263001, max=901288, avg=625924.36, stdev=4837.28, samples=8691
After (+7.3%):
bw ( MiB/s): min= 493, max= 3947, per=100.00%, avg=2625.56, stdev=25.74, samples=8651
iops : min=126454, max=1010681, avg=672142.61, stdev=6590.48, samples=8651
Test result with THP (do a THP randread then switch to 4K page in hope it
issues a lot of splitting):
echo 3 > /proc/sys/vm/drop_caches
fio -name=cached --numjobs=16 --filename=/mnt/test.img \
--buffered=1 --ioengine=mmap -thp=1 --readonly \
--rw=randread --time_based --ramp_time=30s --runtime=10m \
--group_reporting
fio -name=cached --numjobs=16 --filename=/mnt/test.img \
--buffered=1 --ioengine=mmap \
--rw=randread --time_based --runtime=5s --group_reporting
Before:
bw ( KiB/s): min= 4141, max=14202, per=100.00%, avg=7935.51, stdev=96.85, samples=18976
iops : min= 1029, max= 3548, avg=1979.52, stdev=24.23, samples=18976·
READ: bw=4545B/s (4545B/s), 4545B/s-4545B/s (4545B/s-4545B/s), io=64.0KiB (65.5kB), run=14419-14419msec
After (+12.5%):
bw ( KiB/s): min= 4611, max=15370, per=100.00%, avg=8928.74, stdev=105.17, samples=19146
iops : min= 1151, max= 3842, avg=2231.27, stdev=26.29, samples=19146
READ: bw=4635B/s (4635B/s), 4635B/s-4635B/s (4635B/s-4635B/s), io=64.0KiB (65.5kB), run=14137-14137msec
The performance is better for both 4K (+7.5%) and THP (+12.5%) cached read.
Link: https://lkml.kernel.org/r/20240415171857.19244-5-ryncsn@gmail.com
Signed-off-by: Kairui Song <kasong@tencent.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Kairui Song
|
a4864671ca |
lib/xarray: introduce a new helper xas_get_order
It can be used after xas_load to check the order of loaded entries. Compared to xa_get_order, it saves an XA_STATE and avoid a rewalk. Added new test for xas_get_order, to make the test work, we have to export xas_get_order with EXPORT_SYMBOL_GPL. Also fix a sparse warning by checking the slot value with xa_entry instead of accessing it directly, as suggested by Matthew Wilcox. [kasong@tencent.com: simplify comment, sparse warning fix, per Matthew Wilcox] Link: https://lkml.kernel.org/r/20240416071722.45997-4-ryncsn@gmail.com Link: https://lkml.kernel.org/r/20240415171857.19244-4-ryncsn@gmail.com Signed-off-by: Kairui Song <kasong@tencent.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kees Cook
|
e13106952f |
alloc_tag: Tighten file permissions on /proc/allocinfo
The /proc/allocinfo file exposes a tremendous about of information about kernel build details, memory allocations (obviously), and potentially even image layout (due to ordering). As this is intended to be consumed by system owners (like /proc/slabinfo), use the same file permissions as there: 0400. Link: https://lkml.kernel.org/r/20240425200844.work.184-kees@kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
1438d349d1 |
lib: add memory allocations report in show_mem()
Include allocations in show_mem reports. Link: https://lkml.kernel.org/r/20240321163705.3067592-33-surenb@google.com Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Suren Baghdasaryan <surenb@google.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Tested-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@samsung.com> Cc: Benno Lossin <benno.lossin@proton.me> Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Gary Guo <gary@garyguo.net> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kent Overstreet
|
9e54dd8b64 |
rhashtable: plumb through alloc tag
This gives better memory allocation profiling results; rhashtable allocations will be accounted to the code that initialized the rhashtable. [surenb@google.com: undo _noprof additions in the documentation] Link: https://lkml.kernel.org/r/20240326231453.1206227-1-surenb@google.com Link: https://lkml.kernel.org/r/20240321163705.3067592-32-surenb@google.com Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Suren Baghdasaryan <surenb@google.com> Tested-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@samsung.com> Cc: Benno Lossin <benno.lossin@proton.me> Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Gary Guo <gary@garyguo.net> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
c789b5fe38 |
lib: add codetag reference into slabobj_ext
To store code tag for every slab object, a codetag reference is embedded into slabobj_ext when CONFIG_MEM_ALLOC_PROFILING=y. Link: https://lkml.kernel.org/r/20240321163705.3067592-23-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Co-developed-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Tested-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@samsung.com> Cc: Benno Lossin <benno.lossin@proton.me> Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Gary Guo <gary@garyguo.net> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
8d469d0bee |
lib: introduce early boot parameter to avoid page_ext memory overhead
The highest memory overhead from memory allocation profiling comes from page_ext objects. This overhead exists even if the feature is disabled but compiled-in. To avoid it, introduce an early boot parameter that prevents page_ext object creation. The new boot parameter is a tri-state with possible values of 0|1|never. When it is set to "never" the memory allocation profiling support is disabled, and overhead is minimized (currently no page_ext objects are allocated, in the future more overhead might be eliminated). As a result we also lose ability to enable memory allocation profiling at runtime (because there is no space to store alloctag references). Runtime sysctrl becomes read-only if the early boot parameter was set to "never". Note that the default value of this boot parameter depends on the CONFIG_MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT configuration. When CONFIG_MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT=n the boot parameter is set to "never", therefore eliminating any overhead. CONFIG_MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT=y results in boot parameter being set to 1 (enabled). This allows distributions to avoid any overhead by setting CONFIG_MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT=n config and with no changes to the kernel command line. We reuse sysctl.vm.mem_profiling boot parameter name in order to avoid introducing yet another control. This change turns it into a tri-state early boot parameter. Link: https://lkml.kernel.org/r/20240321163705.3067592-16-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Tested-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@samsung.com> Cc: Benno Lossin <benno.lossin@proton.me> Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Gary Guo <gary@garyguo.net> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
dcfe378c81 |
lib: introduce support for page allocation tagging
Introduce helper functions to easily instrument page allocators by storing a pointer to the allocation tag associated with the code that allocated the page in a page_ext field. Link: https://lkml.kernel.org/r/20240321163705.3067592-15-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Co-developed-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Tested-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@samsung.com> Cc: Benno Lossin <benno.lossin@proton.me> Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Gary Guo <gary@garyguo.net> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
22d407b164 |
lib: add allocation tagging support for memory allocation profiling
Introduce CONFIG_MEM_ALLOC_PROFILING which provides definitions to easily instrument memory allocators. It registers an "alloc_tags" codetag type with /proc/allocinfo interface to output allocation tag information when the feature is enabled. CONFIG_MEM_ALLOC_PROFILING_DEBUG is provided for debugging the memory allocation profiling instrumentation. Memory allocation profiling can be enabled or disabled at runtime using /proc/sys/vm/mem_profiling sysctl when CONFIG_MEM_ALLOC_PROFILING_DEBUG=n. CONFIG_MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT enables memory allocation profiling by default. [surenb@google.com: Documentation/filesystems/proc.rst: fix allocinfo title] Link: https://lkml.kernel.org/r/20240326073813.727090-1-surenb@google.com [surenb@google.com: do limited memory accounting for modules with ARCH_NEEDS_WEAK_PER_CPU] Link: https://lkml.kernel.org/r/20240402180933.1663992-2-surenb@google.com [klarasmodin@gmail.com: explicitly include irqflags.h in alloc_tag.h] Link: https://lkml.kernel.org/r/20240407133252.173636-1-klarasmodin@gmail.com [surenb@google.com: fix alloc_tag_init() to prevent passing NULL to PTR_ERR()] Link: https://lkml.kernel.org/r/20240417003349.2520094-1-surenb@google.com Link: https://lkml.kernel.org/r/20240321163705.3067592-14-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Co-developed-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Klara Modin <klarasmodin@gmail.com> Tested-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@samsung.com> Cc: Benno Lossin <benno.lossin@proton.me> Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Gary Guo <gary@garyguo.net> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
47a92dfbe0 |
lib: prevent module unloading if memory is not freed
Skip freeing module's data section if there are non-zero allocation tags because otherwise, once these allocations are freed, the access to their code tag would cause UAF. Link: https://lkml.kernel.org/r/20240321163705.3067592-13-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Tested-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@samsung.com> Cc: Benno Lossin <benno.lossin@proton.me> Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Gary Guo <gary@garyguo.net> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
a473573964 |
lib: code tagging module support
Add support for code tagging from dynamically loaded modules. Link: https://lkml.kernel.org/r/20240321163705.3067592-12-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Co-developed-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Tested-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@samsung.com> Cc: Benno Lossin <benno.lossin@proton.me> Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Gary Guo <gary@garyguo.net> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
916cc5167c |
lib: code tagging framework
Add basic infrastructure to support code tagging which stores tag common information consisting of the module name, function, file name and line number. Provide functions to register a new code tag type and navigate between code tags. Link: https://lkml.kernel.org/r/20240321163705.3067592-11-surenb@google.com Co-developed-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Suren Baghdasaryan <surenb@google.com> Tested-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@samsung.com> Cc: Benno Lossin <benno.lossin@proton.me> Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Gary Guo <gary@garyguo.net> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Duoming Zhou
|
c2af060d1c |
lib/test_hmm.c: handle src_pfns and dst_pfns allocation failure
The kcalloc() in dmirror_device_evict_chunk() will return null if the
physical memory has run out. As a result, if src_pfns or dst_pfns is
dereferenced, the null pointer dereference bug will happen.
Moreover, the device is going away. If the kcalloc() fails, the pages
mapping a chunk could not be evicted. So add a __GFP_NOFAIL flag in
kcalloc().
Finally, as there is no need to have physically contiguous memory, Switch
kcalloc() to kvcalloc() in order to avoid failing allocations.
Link: https://lkml.kernel.org/r/20240312005905.9939-1-duoming@zju.edu.cn
Fixes:
|
||
|
Jakub Kicinski
|
2bd87951de |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/ethernet/ti/icssg/icssg_prueth.c net/mac80211/chan.c |
||
|
Andrey Ryabinin
|
6fe60465e1 |
stackdepot: respect __GFP_NOLOCKDEP allocation flag
If stack_depot_save_flags() allocates memory it always drops
__GFP_NOLOCKDEP flag. So when KASAN tries to track __GFP_NOLOCKDEP
allocation we may end up with lockdep splat like bellow:
======================================================
WARNING: possible circular locking dependency detected
6.9.0-rc3+ #49 Not tainted
------------------------------------------------------
kswapd0/149 is trying to acquire lock:
ffff88811346a920
(&xfs_nondir_ilock_class){++++}-{4:4}, at: xfs_reclaim_inode+0x3ac/0x590
[xfs]
but task is already holding lock:
ffffffff8bb33100 (fs_reclaim){+.+.}-{0:0}, at:
balance_pgdat+0x5d9/0xad0
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (fs_reclaim){+.+.}-{0:0}:
__lock_acquire+0x7da/0x1030
lock_acquire+0x15d/0x400
fs_reclaim_acquire+0xb5/0x100
prepare_alloc_pages.constprop.0+0xc5/0x230
__alloc_pages+0x12a/0x3f0
alloc_pages_mpol+0x175/0x340
stack_depot_save_flags+0x4c5/0x510
kasan_save_stack+0x30/0x40
kasan_save_track+0x10/0x30
__kasan_slab_alloc+0x83/0x90
kmem_cache_alloc+0x15e/0x4a0
__alloc_object+0x35/0x370
__create_object+0x22/0x90
__kmalloc_node_track_caller+0x477/0x5b0
krealloc+0x5f/0x110
xfs_iext_insert_raw+0x4b2/0x6e0 [xfs]
xfs_iext_insert+0x2e/0x130 [xfs]
xfs_iread_bmbt_block+0x1a9/0x4d0 [xfs]
xfs_btree_visit_block+0xfb/0x290 [xfs]
xfs_btree_visit_blocks+0x215/0x2c0 [xfs]
xfs_iread_extents+0x1a2/0x2e0 [xfs]
xfs_buffered_write_iomap_begin+0x376/0x10a0 [xfs]
iomap_iter+0x1d1/0x2d0
iomap_file_buffered_write+0x120/0x1a0
xfs_file_buffered_write+0x128/0x4b0 [xfs]
vfs_write+0x675/0x890
ksys_write+0xc3/0x160
do_syscall_64+0x94/0x170
entry_SYSCALL_64_after_hwframe+0x71/0x79
Always preserve __GFP_NOLOCKDEP to fix this.
Link: https://lkml.kernel.org/r/20240418141133.22950-1-ryabinin.a.a@gmail.com
Fixes:
|
||
|
Kees Cook
|
2e431b23a1 |
ubsan: Avoid i386 UBSAN handler crashes with Clang
When generating Runtime Calls, Clang doesn't respect the -mregparm=3 option used on i386. Hopefully this will be fixed correctly in Clang 19: https://github.com/llvm/llvm-project/pull/89707 but we need to fix this for earlier Clang versions today. Force the calling convention to use non-register arguments. Reported-by: Erhard Furtner <erhard_f@mailbox.org> Closes: https://github.com/KSPP/linux/issues/350 Link: https://lore.kernel.org/r/20240424224026.it.216-kees@kernel.org Acked-by: Nathan Chancellor <nathan@kernel.org> Acked-by: Justin Stitt <justinstitt@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Dawei Li
|
cdc66553c4 |
cpumask: Introduce cpumask_first_and_and()
Introduce cpumask_first_and_and() to get intersection between 3 cpumasks, free of any intermediate cpumask variable. Instead, cpumask_first_and_and() works in-place with all inputs and produces desired output directly. Signed-off-by: Dawei Li <dawei.li@shingroup.cn> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Yury Norov <yury.norov@gmail.com> Link: https://lore.kernel.org/r/20240416085454.3547175-2-dawei.li@shingroup.cn |
||
|
Kees Cook
|
c209826737 |
ubsan: Remove 1-element array usage in debug reporting
The "type_name" character array was still marked as a 1-element array. While we don't validate strings used in format arguments yet, let's fix this before it causes trouble some future day. Link: https://lore.kernel.org/r/20240424162739.work.492-kees@kernel.org Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Kees Cook
|
c01c41e500 |
string_kunit: Move strtomem KUnit test to string_kunit.c
It is more logical to have the strtomem() test in string_kunit.c instead of the memcpy() suite. Move it to live with memtostr(). Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Kees Cook
|
0efc5990bc |
string.h: Introduce memtostr() and memtostr_pad()
Another ambiguous use of strncpy() is to copy from strings that may not
be NUL-terminated. These cases depend on having the destination buffer
be explicitly larger than the source buffer's maximum size, having
the size of the copy exactly match the source buffer's maximum size,
and for the destination buffer to get explicitly NUL terminated.
This usually happens when parsing protocols or hardware character arrays
that are not guaranteed to be NUL-terminated. The code pattern is
effectively this:
char dest[sizeof(src) + 1];
strncpy(dest, src, sizeof(src));
dest[sizeof(dest) - 1] = '\0';
In practice it usually looks like:
struct from_hardware {
...
char name[HW_NAME_SIZE] __nonstring;
...
};
struct from_hardware *p = ...;
char name[HW_NAME_SIZE + 1];
strncpy(name, p->name, HW_NAME_SIZE);
name[NW_NAME_SIZE] = '\0';
This cannot be replaced with:
strscpy(name, p->name, sizeof(name));
because p->name is smaller and not NUL-terminated, so FORTIFY will
trigger when strnlen(p->name, sizeof(name)) is used. And it cannot be
replaced with:
strscpy(name, p->name, sizeof(p->name));
because then "name" may contain a 1 character early truncation of
p->name.
Provide an unambiguous interface for converting a maybe not-NUL-terminated
string to a NUL-terminated string, with compile-time buffer size checking
so that it can never fail at runtime: memtostr() and memtostr_pad(). Also
add KUnit tests for both.
Link: https://lore.kernel.org/r/20240410023155.2100422-1-keescook@chromium.org
Signed-off-by: Kees Cook <keescook@chromium.org>
|
||
|
Greg Kroah-Hartman
|
660a708098 |
Merge 6.9-rc5 into tty-next
We want the tty fixes in here as well, and it resolves a merge conflict in: drivers/tty/serial/serial_core.c as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Jason Gunthorpe
|
e7bc47b166 |
s390: Stop using weak symbols for __iowrite64_copy()
Complete switching the __iowriteXX_copy() routines over to use #define and arch provided inline/macro functions instead of weak symbols. S390 has an implementation that simply calls another memcpy function. Inline this so the callers don't have to do two jumps. Link: https://lore.kernel.org/r/3-v3-1893cd8b9369+1925-mlx5_arm_wc_jgg@nvidia.com Acked-by: Niklas Schnelle <schnelle@linux.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> |
||
|
Jason Gunthorpe
|
20516d6e51 |
x86: Stop using weak symbols for __iowrite32_copy()
Start switching iomap_copy routines over to use #define and arch provided inline/macro functions instead of weak symbols. Inline functions allow more compiler optimization and this is often a driver hot path. x86 has the only weak implementation for __iowrite32_copy(), so replace it with a static inline containing the same single instruction inline assembly. The compiler will generate the "mov edx,ecx" in a more optimal way. Remove iomap_copy_64.S Link: https://lore.kernel.org/r/1-v3-1893cd8b9369+1925-mlx5_arm_wc_jgg@nvidia.com Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> |
||
|
Linus Torvalds
|
2d412262cc |
hardening fixes for v6.9-rc5
- Correctly disable UBSAN configs in configs/hardening (Nathan Chancellor) - Add missing signed integer overflow trap types to arm64 handler -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmYi0M8WHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJjPrEACrLlPZUPLiJPlPdYC5bW4lLSgZ v6z5XjeEVWVvIlzW3DKPKvzMmIl6D3CTN6KbgdjHR+s5VYGYVlkoQJw09SSBu1OX yFC2i0lyqUKuAmh6jK1T46kXvbrgK/3ClO3nQk7KotTfvuRcorAcGEmayTYnaWqd JX3qyry2oEiQG9pWDHl9bRQ1ZgbNdNkxR2YYIhy88lrMWORdVNG7PFkgNnVsEbnb UAbXl817//TSTuXUwklTllz0UNInmDmQTjrmMRUhiwTKEs8aRS5VX6biSyc1Fucz KYXNeK9ciV80mQYnj7jDxgXC5jNThtrjEokzht8vvZGHcBp3WMr6CJLmwj9aaSXE edib7mJf/YveJTCPN17xAvIMHZAFZyoyeiVIOE1Ys2lWSj8rXH5TvWnn/E4QPxHK 77lOKGZNwNMYmIa+L6gb3OOWpiZpOMTLCGMuJh6VSDf5BcA0i45yTxAlAe5JYpgw txxDscFu5MtrabR4Z28J+VY/wnWqQAC89D6qYsJOPH8kL0o3XhELCDKPNUZoY094 LV7XuhAB+xDqNdvZi7SHTmTtZSLPqRBlNrOUqQSmXrwjp11naya26l7fn1Y0cpQM K8o3ioUkSg0PJNox/kGxryouHXXMqtN/k52JPotkfa6XEQDpN82uo0xJD9r21Viu qhA7A8vcQ3KIb0cUbw== =Q6Hg -----END PGP SIGNATURE----- Merge tag 'hardening-v6.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening fixes from Kees Cook: - Correctly disable UBSAN configs in configs/hardening (Nathan Chancellor) - Add missing signed integer overflow trap types to arm64 handler * tag 'hardening-v6.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: ubsan: Add awareness of signed integer overflow traps configs/hardening: Disable CONFIG_UBSAN_SIGNED_WRAP configs/hardening: Fix disabling UBSAN configurations |
||
|
Kees Cook
|
dde915c5cb |
string: Convert KUnit test names to standard convention
The KUnit convention for test names is AREA_test_WHAT. Adjust the string test names to follow this pattern. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Tested-by: Ivan Orlov <ivan.orlov0322@gmail.com> Link: https://lore.kernel.org/r/20240419140155.3028912-5-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Kees Cook
|
bd678f7d9b |
string: Merge strcat KUnit tests into string_kunit.c
Move the strcat() tests into string_kunit.c. Remove the separate Kconfig and Makefile rule. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Tested-by: Ivan Orlov <ivan.orlov0322@gmail.com> Link: https://lore.kernel.org/r/20240419140155.3028912-4-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Kees Cook
|
6e4ef1429f |
string: Prepare to merge strcat KUnit tests into string_kunit.c
The test naming convention differs between string_kunit.c and strcat_kunit.c. Move "test" to the beginning of the function name. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Tested-by: Ivan Orlov <ivan.orlov0322@gmail.com> Link: https://lore.kernel.org/r/20240419140155.3028912-3-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Kees Cook
|
bb8d9b742a |
string: Merge strscpy KUnit tests into string_kunit.c
Move the strscpy() tests into string_kunit.c. Remove the separate Kconfig and Makefile rule. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Tested-by: Ivan Orlov <ivan.orlov0322@gmail.com> Link: https://lore.kernel.org/r/20240419140155.3028912-2-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Kees Cook
|
b03442f761 |
string: Prepare to merge strscpy_kunit.c into string_kunit.c
In preparation for moving the strscpy_kunit.c tests into string_kunit.c, rename "tc" to "strscpy_check" for better readability. Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Tested-by: Ivan Orlov <ivan.orlov0322@gmail.com> Link: https://lore.kernel.org/r/20240419140155.3028912-1-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Linus Torvalds
|
9c6e84e4ba |
Bootconfig fixes for v6.9-rc4:
- Fix potential static_command_line buffer overrun. Currently we allocate the memory for static_command_line based on "boot_command_line", but it will copy "command_line" into it. So we use the length of "command_line" instead of "boot_command_line" (as previously we did). - Use memblock_free_late() in xbc_exit() instead of memblock_free() after the buddy system is initialized. - Fix a kerneldoc warning. -----BEGIN PGP SIGNATURE----- iQFPBAABCgA5FiEEh7BulGwFlgAOi5DV2/sHvwUrPxsFAmYgN1kbHG1hc2FtaS5o aXJhbWF0c3VAZ21haWwuY29tAAoJENv7B78FKz8b/yEH/1FFgb7UJDtQLbtHl5/b bcxLbSzfb/N37Bc+sE/AKZYrt5QAMjaOmdtzQz9kdLtycxWcQinne4jqGxd6zfTU UIisfDjEZr46/Rs5sJg+5i8wWrud1TJOmlMsqiSVcorl0f/wE4S7PqgYXRNWZ0p+ KipjuCCV43ITmVjsiq2NxfZGDaWzow/EJXwZzpQkJE1zaU13w2nzgzg64JW3f/lf Dx/o9jlYEoLkCjiQJ6XaRuTpHbPP1grozSMbvE3z1WnxCaiFHlzXGi6WUhto+pTu vt/pUrIFYE7k0IFHAVEgBjOkfCm5y9FwOdPLqwy3harQ5ek9D6h6bFnDhbZw7I27 6V8= =e2c5 -----END PGP SIGNATURE----- Merge tag 'bootconfig-fixes-v6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull bootconfig fixes from Masami Hiramatsu: - Fix potential static_command_line buffer overrun. Currently we allocate the memory for static_command_line based on "boot_command_line", but it will copy "command_line" into it. So we use the length of "command_line" instead of "boot_command_line" (as we previously did) - Use memblock_free_late() in xbc_exit() instead of memblock_free() after the buddy system is initialized - Fix a kerneldoc warning * tag 'bootconfig-fixes-v6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: bootconfig: Fix the kerneldoc of _xbc_exit() bootconfig: use memblock_free_late to free xbc memory to buddy init/main.c: Fix potential static_command_line memory overflow |
||
|
Ivan Orlov
|
9259a47216 |
string_kunit: Add test cases for str*cmp functions
Currently, str*cmp functions (strcmp, strncmp, strcasecmp and strncasecmp) are not covered with tests. Extend the `string_kunit.c` test by adding the test cases for them. This patch adds 8 more test cases: 1) strcmp test 2) strcmp test on long strings (2048 chars) 3) strncmp test 4) strncmp test on long strings (2048 chars) 5) strcasecmp test 6) strcasecmp test on long strings 7) strncasecmp test 8) strncasecmp test on long strings These test cases aim at covering as many edge cases as possible, including the tests on empty strings, situations when the different symbol is placed at the end of one of the strings, etc. Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com> Reviewed-by: Andy Shevchenko <andy@kernel.org> Link: https://lore.kernel.org/r/20240417233033.717596-1-ivan.orlov0322@gmail.com Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Masami Hiramatsu (Google)
|
298b871cd5 |
bootconfig: Fix the kerneldoc of _xbc_exit()
Fix the kerneldoc of _xbc_exit() which is updated to have an @early
argument and the function name is changed.
Link: https://lore.kernel.org/all/171321744474.599864.13532445969528690358.stgit@devnote2/
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202404150036.kPJ3HEFA-lkp@intel.com/
Fixes:
|
||
|
Chen Pei
|
dac045fc9f |
bpf, tests: Fix typos in comments
Currently, there are two comments with same name "64-bit ATOMIC magnitudes", the second one should be "32-bit ATOMIC magnitudes" based on the context. Signed-off-by: Chen Pei <cp0613@linux.alibaba.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yonghong.song@linux.dev> Link: https://lore.kernel.org/bpf/20240415081928.17440-1-cp0613@linux.alibaba.com |
||
|
Kees Cook
|
f4626c12e4 |
ubsan: Add awareness of signed integer overflow traps
On arm64, UBSAN traps can be decoded from the trap instruction. Add the
add, sub, and mul overflow trap codes now that CONFIG_UBSAN_SIGNED_WRAP
exists. Seen under clang 19:
Internal error: UBSAN: unrecognized failure code: 00000000f2005515 [#1] PREEMPT SMP
Reported-by: Nathan Chancellor <nathan@kernel.org>
Closes: https://lore.kernel.org/lkml/20240411-fix-ubsan-in-hardening-config-v1-0-e0177c80ffaa@kernel.org
Fixes:
|
||
|
Breno Leitao
|
4ba67ef3a1 |
net: dqs: make struct dql more cache efficient
With the previous change, struct dqs->stall_thrs will be in the hot path
(at queue side), even if DQS is disabled.
The other fields accessed in this function (last_obj_cnt and num_queued)
are in the first cache line, let's move this field (stall_thrs) to the
very first cache line, since there is a hole there.
This does not change the structure size, since it moves an short (2
bytes) to 4-bytes whole in the first cache line.
This is the new structure format now:
struct dql {
unsigned int num_queued;
unsigned int last_obj_cnt;
...
short unsigned int stall_thrs;
/* XXX 2 bytes hole, try to pack */
...
/* --- cacheline 1 boundary (64 bytes) --- */
...
/* Longest stall detected, reported to user */
short unsigned int stall_max;
/* XXX 2 bytes hole, try to pack */
};
Also, read the stall_thrs (now in the very first cache line) earlier,
together with dql->num_queued (also in the first cache line).
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/r/20240411192241.2498631-5-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
||
|
Qiang Zhang
|
89f9a1e876 |
bootconfig: use memblock_free_late to free xbc memory to buddy
On the time to free xbc memory in xbc_exit(), memblock may has handed
over memory to buddy allocator. So it doesn't make sense to free memory
back to memblock. memblock_free() called by xbc_exit() even causes UAF bugs
on architectures with CONFIG_ARCH_KEEP_MEMBLOCK disabled like x86.
Following KASAN logs shows this case.
This patch fixes the xbc memory free problem by calling memblock_free()
in early xbc init error rewind path and calling memblock_free_late() in
xbc exit path to free memory to buddy allocator.
[ 9.410890] ==================================================================
[ 9.418962] BUG: KASAN: use-after-free in memblock_isolate_range+0x12d/0x260
[ 9.426850] Read of size 8 at addr ffff88845dd30000 by task swapper/0/1
[ 9.435901] CPU: 9 PID: 1 Comm: swapper/0 Tainted: G U 6.9.0-rc3-00208-g586b5dfb51b9 #5
[ 9.446403] Hardware name: Intel Corporation RPLP LP5 (CPU:RaptorLake)/RPLP LP5 (ID:13), BIOS IRPPN02.01.01.00.00.19.015.D-00000000 Dec 28 2023
[ 9.460789] Call Trace:
[ 9.463518] <TASK>
[ 9.465859] dump_stack_lvl+0x53/0x70
[ 9.469949] print_report+0xce/0x610
[ 9.473944] ? __virt_addr_valid+0xf5/0x1b0
[ 9.478619] ? memblock_isolate_range+0x12d/0x260
[ 9.483877] kasan_report+0xc6/0x100
[ 9.487870] ? memblock_isolate_range+0x12d/0x260
[ 9.493125] memblock_isolate_range+0x12d/0x260
[ 9.498187] memblock_phys_free+0xb4/0x160
[ 9.502762] ? __pfx_memblock_phys_free+0x10/0x10
[ 9.508021] ? mutex_unlock+0x7e/0xd0
[ 9.512111] ? __pfx_mutex_unlock+0x10/0x10
[ 9.516786] ? kernel_init_freeable+0x2d4/0x430
[ 9.521850] ? __pfx_kernel_init+0x10/0x10
[ 9.526426] xbc_exit+0x17/0x70
[ 9.529935] kernel_init+0x38/0x1e0
[ 9.533829] ? _raw_spin_unlock_irq+0xd/0x30
[ 9.538601] ret_from_fork+0x2c/0x50
[ 9.542596] ? __pfx_kernel_init+0x10/0x10
[ 9.547170] ret_from_fork_asm+0x1a/0x30
[ 9.551552] </TASK>
[ 9.555649] The buggy address belongs to the physical page:
[ 9.561875] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x45dd30
[ 9.570821] flags: 0x200000000000000(node=0|zone=2)
[ 9.576271] page_type: 0xffffffff()
[ 9.580167] raw: 0200000000000000 ffffea0011774c48 ffffea0012ba1848 0000000000000000
[ 9.588823] raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
[ 9.597476] page dumped because: kasan: bad access detected
[ 9.605362] Memory state around the buggy address:
[ 9.610714] ffff88845dd2ff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 9.618786] ffff88845dd2ff80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 9.626857] >ffff88845dd30000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 9.634930] ^
[ 9.638534] ffff88845dd30080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 9.646605] ffff88845dd30100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 9.654675] ==================================================================
Link: https://lore.kernel.org/all/20240414114944.1012359-1-qiang4.zhang@linux.intel.com/
Fixes:
|
||
|
Bitao Hu
|
d7037381d0 |
watchdog/softlockup: Low-overhead detection of interrupt storm
The following softlockup is caused by interrupt storm, but it cannot be
identified from the call tree. Because the call tree is just a snapshot
and doesn't fully capture the behavior of the CPU during the soft lockup.
watchdog: BUG: soft lockup - CPU#28 stuck for 23s! [fio:83921]
...
Call trace:
__do_softirq+0xa0/0x37c
__irq_exit_rcu+0x108/0x140
irq_exit+0x14/0x20
__handle_domain_irq+0x84/0xe0
gic_handle_irq+0x80/0x108
el0_irq_naked+0x50/0x58
Therefore, it is necessary to report CPU utilization during the
softlockup_threshold period (report once every sample_period, for a total
of 5 reportings), like this:
watchdog: BUG: soft lockup - CPU#28 stuck for 23s! [fio:83921]
CPU#28 Utilization every 4s during lockup:
#1: 0% system, 0% softirq, 100% hardirq, 0% idle
#2: 0% system, 0% softirq, 100% hardirq, 0% idle
#3: 0% system, 0% softirq, 100% hardirq, 0% idle
#4: 0% system, 0% softirq, 100% hardirq, 0% idle
#5: 0% system, 0% softirq, 100% hardirq, 0% idle
...
This is helpful in determining whether an interrupt storm has occurred or
in identifying the cause of the softlockup. The criteria for determination
are as follows:
a. If the hardirq utilization is high, then interrupt storm should be
considered and the root cause cannot be determined from the call tree.
b. If the softirq utilization is high, then the call might not necessarily
point at the root cause.
c. If the system utilization is high, then analyzing the root
cause from the call tree is possible in most cases.
The mechanism requires a considerable amount of global storage space
when configured for the maximum number of CPUs. Therefore, adding a
SOFTLOCKUP_DETECTOR_INTR_STORM Kconfig knob that defaults to "yes"
if the max number of CPUs is <= 128.
Signed-off-by: Bitao Hu <yaoma@linux.alibaba.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Liu Song <liusong@linux.alibaba.com>
Link: https://lore.kernel.org/r/20240411074134.30922-5-yaoma@linux.alibaba.com
|
||
|
Jakub Kicinski
|
94426ed213 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: net/unix/garbage.c |
||
|
Linus Torvalds
|
2ae9a8972c |
Including fixes from bluetooth.
Current release - new code bugs:
- netfilter: complete validation of user input
- mlx5: disallow SRIOV switchdev mode when in multi-PF netdev
Previous releases - regressions:
- core: fix u64_stats_init() for lockdep when used repeatedly in one file
- ipv6: fix race condition between ipv6_get_ifaddr and ipv6_del_addr
- bluetooth: fix memory leak in hci_req_sync_complete()
- batman-adv: avoid infinite loop trying to resize local TT
- drv: geneve: fix header validation in geneve[6]_xmit_skb
- drv: bnxt_en: fix possible memory leak in bnxt_rdma_aux_device_init()
- drv: mlx5: offset comp irq index in name by one
- drv: ena: avoid double-free clearing stale tx_info->xdpf value
- drv: pds_core: fix pdsc_check_pci_health deadlock
Previous releases - always broken:
- xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING
- bluetooth: fix setsockopt not validating user input
- af_unix: clear stale u->oob_skb.
- nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies
- drv: virtio_net: fix guest hangup on invalid RSS update
- drv: mlx5e: Fix mlx5e_priv_init() cleanup flow
- dsa: mt7530: trap link-local frames regardless of ST Port State
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bluetooth.
Current release - new code bugs:
- netfilter: complete validation of user input
- mlx5: disallow SRIOV switchdev mode when in multi-PF netdev
Previous releases - regressions:
- core: fix u64_stats_init() for lockdep when used repeatedly in one
file
- ipv6: fix race condition between ipv6_get_ifaddr and ipv6_del_addr
- bluetooth: fix memory leak in hci_req_sync_complete()
- batman-adv: avoid infinite loop trying to resize local TT
- drv: geneve: fix header validation in geneve[6]_xmit_skb
- drv: bnxt_en: fix possible memory leak in
bnxt_rdma_aux_device_init()
- drv: mlx5: offset comp irq index in name by one
- drv: ena: avoid double-free clearing stale tx_info->xdpf value
- drv: pds_core: fix pdsc_check_pci_health deadlock
Previous releases - always broken:
- xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING
- bluetooth: fix setsockopt not validating user input
- af_unix: clear stale u->oob_skb.
- nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies
- drv: virtio_net: fix guest hangup on invalid RSS update
- drv: mlx5e: Fix mlx5e_priv_init() cleanup flow
- dsa: mt7530: trap link-local frames regardless of ST Port State"
* tag 'net-6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (59 commits)
net: ena: Set tx_info->xdpf value to NULL
net: ena: Fix incorrect descriptor free behavior
net: ena: Wrong missing IO completions check order
net: ena: Fix potential sign extension issue
af_unix: Fix garbage collector racing against connect()
net: dsa: mt7530: trap link-local frames regardless of ST Port State
Revert "s390/ism: fix receive message buffer allocation"
net: sparx5: fix wrong config being used when reconfiguring PCS
net/mlx5: fix possible stack overflows
net/mlx5: Disallow SRIOV switchdev mode when in multi-PF netdev
net/mlx5e: RSS, Block XOR hash with over 128 channels
net/mlx5e: Do not produce metadata freelist entries in Tx port ts WQE xmit
net/mlx5e: HTB, Fix inconsistencies with QoS SQs number
net/mlx5e: Fix mlx5e_priv_init() cleanup flow
net/mlx5e: RSS, Block changing channels number when RXFH is configured
net/mlx5: Correctly compare pkt reformat ids
net/mlx5: Properly link new fs rules into the tree
net/mlx5: offset comp irq index in name by one
net/mlx5: Register devlink first under devlink lock
net/mlx5: E-switch, store eswitch pointer before registering devlink_param
...
|
||
|
Linus Torvalds
|
fe5b5ef836 |
hardening fixes for v6.9-rc4
- gcc-plugins/stackleak: Avoid .head.text section (Ard Biesheuvel) - ubsan: fix unused variable warning in test module (Arnd Bergmann) - Improve entropy diffusion in randomize_kstack -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmYWv7sWHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJv0TD/9z0EFo2K6brr6rZ9LUK8JgdcFd MXfee95uw3DvqTphx6H+559AGl0nCZd0S8huw8TAPsRg2hNeuFsQTcQ4TRnyCE+w qMCjflZI0LHqyTfTOuFeSJERQ8kiHntaci33xXR7crehHNGvJN6jRB5ouUOxdFlB L4mx7P4OFjS/+6qRM957yqWrCPM26Nl7qe0TcnOZ5eh+HvIRNF9hSg8DAMMIb0j7 lZZojpOdiYYccfBUhM2PCpDfSNtG06/QpKGCeVK/3gpRzrVWl99iABTpJStf3rbH PWd3kwz/FINYq8sOjm9Y960Xgkz+IZkhr5YXVs6ezMoV5J9vGBG7zjzlYbPwbfoy UTaHUEGmYqCnnshrC5PU05G/CGlYP5iz6pzfxofXLca5+WQY0HxERLAkVdVhn39q oRLIOleAguocK3eBQ03tmJFF28yFJyOWK3C0gp8g8vExBAg2EQGrHOAfR28crB5p yKvLQHL04urSQA9gs4PiflBGyHiLSuWBGyO1K3NvW5cNrRUIGXlwfy8i7cHSzBFo /rQ49E7xxtitAlk+Jol55OewEpw/nq1wqOv0eFW4pje+WSOVRpbQBtDD03gik74v bW9ownxrypqUm5OR6Uuf6OwVWi/zX03inVF0d55dcLv+kjDy0Xu8ViVOhXhs2vT8 PayuOAhAvHgcfGJwFw== =MHgA -----END PGP SIGNATURE----- Merge tag 'hardening-v6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening fixes from Kees Cook: - gcc-plugins/stackleak: Avoid .head.text section (Ard Biesheuvel) - ubsan: fix unused variable warning in test module (Arnd Bergmann) - Improve entropy diffusion in randomize_kstack * tag 'hardening-v6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: randomize_kstack: Improve entropy diffusion ubsan: fix unused variable warning in test module gcc-plugins/stackleak: Avoid .head.text section |
||
|
Paul E. McKenney
|
a88d970c8b |
lib: Add one-byte emulation function
Architectures are required to provide four-byte cmpxchg() and 64-bit architectures are additionally required to provide eight-byte cmpxchg(). However, there are cases where one-byte cmpxchg() would be extremely useful. Therefore, provide cmpxchg_emu_u8() that emulates one-byte cmpxchg() in terms of four-byte cmpxchg(). Note that this emulations is fully ordered, and can (for example) cause one-byte cmpxchg_relaxed() to incur the overhead of full ordering. If this causes problems for a given architecture, that architecture is free to provide its own lighter-weight primitives. [ paulmck: Apply Marco Elver feedback. ] [ paulmck: Apply kernel test robot feedback. ] [ paulmck: Drop two-byte support per Arnd Bergmann feedback. ] Link: https://lore.kernel.org/all/0733eb10-5e7a-4450-9b8a-527b97c842ff@paulmck-laptop/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Acked-by: Marco Elver <elver@google.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org> Cc: Douglas Anderson <dianders@chromium.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: <linux-arch@vger.kernel.org> |
||
|
Jiri Slaby (SUSE)
|
d52b761e4b |
kfifo: add kfifo_dma_out_prepare_mapped()
When the kfifo buffer is already dma-mapped, one cannot use the kfifo API to fill in an SG list. Add kfifo_dma_in_prepare_mapped() which allows exactly this. A mapped dma_addr_t is passed and it is filled into provided sgl too. Including the dma_len. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Cc: Stefani Seibold <stefani@seibold.net> Cc: Andrew Morton <akpm@linux-foundation.org> Link: https://lore.kernel.org/r/20240405060826.2521-8-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Jiri Slaby (SUSE)
|
fea0dde081 |
kfifo: pass offset to setup_sgl_buf() instead of a pointer
As a preparatory for dma addresses filling, we need the data offset instead of virtual pointer in setup_sgl_buf(). So pass the former instead the latter. And pointer to fifo is needed in setup_sgl_buf() now too. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Cc: Stefani Seibold <stefani@seibold.net> Cc: Andrew Morton <akpm@linux-foundation.org> Link: https://lore.kernel.org/r/20240405060826.2521-7-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Jiri Slaby (SUSE)
|
ed6d22f5d8 |
kfifo: rename l to len_to_end in setup_sgl()
So that one can make any sense of the name. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Cc: Stefani Seibold <stefani@seibold.net> Cc: Andrew Morton <akpm@linux-foundation.org> Link: https://lore.kernel.org/r/20240405060826.2521-6-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Jiri Slaby (SUSE)
|
e9d9576de0 |
kfifo: remove support for physically non-contiguous memory
First, there is no such user. The only user of this interface is caam_rng_fill_async() and that uses kfifo_alloc() -> kmalloc(). Second, the implementation does not allow anything else than direct mapping and kmalloc() (due to virt_to_phys()), anyway. Therefore, there is no point in having this dead (and complex) code in the kernel. Note the setup_sgl_buf() function now boils down to simple sg_set_buf(). That is called twice from setup_sgl() to take care of kfifo buffer wrap-around. setup_sgl_buf() will be extended shortly, so keeping it in place. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Stefani Seibold <stefani@seibold.net> Link: https://lore.kernel.org/r/20240405060826.2521-5-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Jiri Slaby (SUSE)
|
4edd7e96a1 |
kfifo: add kfifo_out_linear{,_ptr}()
These are helpers which are going to be used in the serial layer. We need a wrapper around kfifo which provides us with a tail (sometimes "tail" offset, sometimes a pointer) to the kfifo data. And which returns count of available data -- but not larger than to the end of the buffer (hence _linear in the names). I.e. something like CIRC_CNT_TO_END() in the legacy circ_buf. This patch adds such two helpers. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Cc: Stefani Seibold <stefani@seibold.net> Cc: Andrew Morton <akpm@linux-foundation.org> Link: https://lore.kernel.org/r/20240405060826.2521-4-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Jiri Slaby (SUSE)
|
779087fe2f |
kfifo: drop __kfifo_dma_out_finish_r()
It is the same as __kfifo_skip_r(), so: * drop __kfifo_dma_out_finish_r() completely, and * replace its (only) use by __kfifo_skip_r(). Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Cc: Stefani Seibold <stefani@seibold.net> Cc: Andrew Morton <akpm@linux-foundation.org> Link: https://lore.kernel.org/r/20240405060826.2521-2-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Adrian Hunter
|
8ff1e6c5ac |
vdso: Fix powerpc build U64_MAX undeclared error
U64_MAX is not in include/vdso/limits.h, although that isn't noticed on x86
because x86 includes include/linux/limits.h indirectly. However powerpc is
more selective, resulting in the following build error:
In file included from <command-line>:
lib/vdso/gettimeofday.c: In function 'vdso_calc_ns':
lib/vdso/gettimeofday.c:11:33: error: 'U64_MAX' undeclared
11 | # define VDSO_DELTA_MASK(vd) U64_MAX
| ^~~~~~~
Use ULLONG_MAX instead which will work just as well and is in
include/vdso/limits.h.
Fixes:
|
||
|
Adrian Hunter
|
456e3788bc |
vdso: Make delta calculation overflow safe
Kernel timekeeping is designed to keep the change in cycles (since the last timer interrupt) below max_cycles, which prevents multiplication overflow when converting cycles to nanoseconds. However, if timer interrupts stop, the calculation will eventually overflow. Add protection against that, enabled by config option CONFIG_GENERIC_VDSO_OVERFLOW_PROTECT. Check against max_cycles, falling back to a slower higher precision calculation. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20240325064023.2997-8-adrian.hunter@intel.com |
||
|
Adrian Hunter
|
0c68458b0a |
vdso: Add CONFIG_GENERIC_VDSO_OVERFLOW_PROTECT
Add CONFIG_GENERIC_VDSO_OVERFLOW_PROTECT in preparation to add multiplication overflow protection to the VDSO time getter functions. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20240325064023.2997-4-adrian.hunter@intel.com |
||
|
Adrian Hunter
|
5b26ef660a |
vdso: Consolidate nanoseconds calculation
Consolidate nanoseconds calculation to simplify and reduce code duplication. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20240325064023.2997-3-adrian.hunter@intel.com |
||
|
Adrian Hunter
|
c8e3a8b6f2 |
vdso: Consolidate vdso_calc_delta()
Consolidate vdso_calc_delta(), in preparation for further simplification. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20240325064023.2997-2-adrian.hunter@intel.com |
||
|
Arnd Bergmann
|
e9d47b7b31 |
lib: checksum: hide unused expected_csum_ipv6_magic[]
When CONFIG_NET is disabled, an extra warning shows up for this
unused variable:
lib/checksum_kunit.c:218:18: error: 'expected_csum_ipv6_magic' defined but not used [-Werror=unused-const-variable=]
Replace the #ifdef with an IS_ENABLED() check that makes the compiler's
dead-code-elimination take care of the link failure.
Fixes:
|
||
|
Peter Collingbourne
|
a6c1d9cb9a |
stackdepot: rename pool_index to pool_index_plus_1
Commit |
||
|
Andrii Nakryiko
|
229087f6f1 |
bpf, kconfig: Fix DEBUG_INFO_BTF_MODULES Kconfig definition
Turns out that due to CONFIG_DEBUG_INFO_BTF_MODULES not having an
explicitly specified "menu item name" in Kconfig, it's basically
impossible to turn it off (see [0]).
This patch fixes the issue by defining menu name for
CONFIG_DEBUG_INFO_BTF_MODULES, which makes it actually adjustable
and independent of CONFIG_DEBUG_INFO_BTF, in the sense that one can
have DEBUG_INFO_BTF=y and DEBUG_INFO_BTF_MODULES=n.
We still keep it as defaulting to Y, of course.
Fixes:
|
||
|
Guenter Roeck
|
b1080c667b |
mm/slub, kunit: Use inverted data to corrupt kmem cache
Two failure patterns are seen randomly when running slub_kunit tests with
CONFIG_SLAB_FREELIST_RANDOM and CONFIG_SLAB_FREELIST_HARDENED enabled.
Pattern 1:
# test_clobber_zone: pass:1 fail:0 skip:0 total:1
ok 1 test_clobber_zone
# test_next_pointer: EXPECTATION FAILED at lib/slub_kunit.c:72
Expected 3 == slab_errors, but
slab_errors == 0 (0x0)
# test_next_pointer: EXPECTATION FAILED at lib/slub_kunit.c:84
Expected 2 == slab_errors, but
slab_errors == 0 (0x0)
# test_next_pointer: pass:0 fail:1 skip:0 total:1
not ok 2 test_next_pointer
In this case, test_next_pointer() overwrites p[s->offset], but the data
at p[s->offset] is already 0x12.
Pattern 2:
ok 1 test_clobber_zone
# test_next_pointer: EXPECTATION FAILED at lib/slub_kunit.c:72
Expected 3 == slab_errors, but
slab_errors == 2 (0x2)
# test_next_pointer: pass:0 fail:1 skip:0 total:1
not ok 2 test_next_pointer
In this case, p[s->offset] has a value other than 0x12, but one of the
expected failures is nevertheless missing.
Invert data instead of writing a fixed value to corrupt the cache data
structures to fix the problem.
Fixes:
|
||
|
Arnd Bergmann
|
bbda3ba626 |
ubsan: fix unused variable warning in test module
This is one of the drivers with an unused variable that is marked 'const'.
Adding a __used annotation here avoids the warning and lets us enable
the option by default:
lib/test_ubsan.c:137:28: error: unused variable 'skip_ubsan_array' [-Werror,-Wunused-const-variable]
Fixes:
|
||
|
Alexander Lobakin
|
7adaf37f7f |
lib/bitmap: add compile-time test for __assign_bit() optimization
Commit
|
||
|
Alexander Lobakin
|
a37fbe666c |
bitmap: introduce generic optimized bitmap_size()
The number of times yet another open coded `BITS_TO_LONGS(nbits) * sizeof(long)` can be spotted is huge. Some generic helper is long overdue. Add one, bitmap_size(), but with one detail. BITS_TO_LONGS() uses DIV_ROUND_UP(). The latter works well when both divident and divisor are compile-time constants or when the divisor is not a pow-of-2. When it is however, the compilers sometimes tend to generate suboptimal code (GCC 13): 48 83 c0 3f add $0x3f,%rax 48 c1 e8 06 shr $0x6,%rax 48 8d 14 c5 00 00 00 00 lea 0x0(,%rax,8),%rdx %BITS_PER_LONG is always a pow-2 (either 32 or 64), but GCC still does full division of `nbits + 63` by it and then multiplication by 8. Instead of BITS_TO_LONGS(), use ALIGN() and then divide by 8. GCC: 8d 50 3f lea 0x3f(%rax),%edx c1 ea 03 shr $0x3,%edx 81 e2 f8 ff ff 1f and $0x1ffffff8,%edx Now it shifts `nbits + 63` by 3 positions (IOW performs fast division by 8) and then masks bits[2:0]. bloat-o-meter: add/remove: 0/0 grow/shrink: 20/133 up/down: 156/-773 (-617) Clang does it better and generates the same code before/after starting from -O1, except that with the ALIGN() approach it uses %edx and thus still saves some bytes: add/remove: 0/0 grow/shrink: 9/133 up/down: 18/-538 (-520) Note that we can't expand DIV_ROUND_UP() by adding a check and using this approach there, as it's used in array declarations where expressions are not allowed. Add this helper to tools/ as well. Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Acked-by: Yury Norov <yury.norov@gmail.com> Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Alexander Potapenko
|
f3e28876b6 |
lib/test_bitmap: use pr_info() for non-error messages
pr_err() messages may be treated as errors by some log readers, so let us only use them for test failures. For non-error messages, replace them with pr_info(). Suggested-by: Alexander Lobakin <aleksander.lobakin@intel.com> Signed-off-by: Alexander Potapenko <glider@google.com> Acked-by: Yury Norov <yury.norov@gmail.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Alexander Potapenko
|
991e558364 |
lib/test_bitmap: add tests for bitmap_{read,write}()
Add basic tests ensuring that values can be added at arbitrary positions of the bitmap, including those spanning into the adjacent unsigned longs. Two new performance tests, test_bitmap_read_perf() and test_bitmap_write_perf(), can be used to assess future performance improvements of bitmap_read() and bitmap_write(): [ 0.431119][ T1] test_bitmap: Time spent in test_bitmap_read_perf: 615253 [ 0.433197][ T1] test_bitmap: Time spent in test_bitmap_write_perf: 916313 (numbers from a Intel(R) Xeon(R) Gold 6154 CPU @ 3.00GHz machine running QEMU). Signed-off-by: Alexander Potapenko <glider@google.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Yury Norov <yury.norov@gmail.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> Signed-off-by: Alexander Lobakin <aleksander.lobakin@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Ingo Molnar
|
f4566a1e73 |
Linux 6.9-rc1
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmYAlq0eHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGYqwH/0fb4pRbVtULpiIK Cs7/e/IWzRRWLBq+Jj2KVVTxwjyiKFNOq6K/CHHnljIWo1yN2CIWeOgbHfTI0WfN xmBdJP7OtK8MCN9PwwoWhZxMLcyv4pFCERrrkGa7AD+cdN4j/ytQ3mH5V8f/21fd rnpQSdpgGXB2SSMHd520Y+e56+gxrrTmsDXjZWM08Wt0bbqAWJrjNe58BMz5hI1t yQtcgYRTdUuZBn5TMkT99lK9EFQslV38YCo7RUP5D0DWXS1jSfWlgnCD1Nc1ziF4 ps/xPdUMDJAc5Tslg/hgJOciSuLqgMzIUsVgZrKysuu3NhwDY1LDWGORmH1t8E8W RC25950= =F+01 -----END PGP SIGNATURE----- Merge tag 'v6.9-rc1' into sched/core, to pick up fixes and to refresh the branch Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Linus Torvalds
|
b71871395c |
hardening fixes for v6.9-rc1
- CONFIG_MEMCPY_SLOW_KUNIT_TEST is no longer needed (Guenter Roeck) - Fix needless UTF-8 character in arch/Kconfig (Liu Song) - Improve __counted_by warning message in LKDTM (Nathan Chancellor) - Refactor DEFINE_FLEX() for default use of __counted_by - Disable signed integer overflow sanitizer on GCC < 8 -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmX+Gj8WHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJg1fD/4zrQ3MmMpK/GaNCziayLuCJiMu urS85FkRaGkmf3d3PDVVOBw5wFae408O+i4a1b10k2L/At79Z5oi/RqKYtPXthGr davVIJt+ZBuTC5l7jUHeK6XAJ/8/28Xsq4dMQjy7pUstYU14sl2a1z+IuV7I+jxm hlVqvj7Q0dsPijyF9YAuoWhvXIGs3/p6oaq/p4+p0sGpbbjNEpNka9qgR9vl1NFe WrByHrFMxl6gmLPTilNvgdD50id4x7OYEtROdDP8tXK+dx8YGaEXAuPzYkpzmuOb 9UjhGitxRX6VfWBy7N/TWtDryV493Jq2VFVsrEc2zNr2HR34/vTYCjMyfLlJNXVu hD3vZ/tO2tDnDhBeMKigIsbTtev4qn60IElmc4BXudgVbWehjVsJk+kGbKEIkIy6 ww7vF4OPWEKNTBVsDtFJwKNZixb/NMX3nS1xCALffzNgh3o8qP28gESOKImHeKhI U7ZhoWLob3ayEcjCVhCaBEC+fK9a5Eva6L5lTUoObPqzXwoysi2yGEQTqHlYwdfg unQuZUaiWEE9w1GG7CEx5xB9VmaY2U9bF7thUw6qMNmvCzqJr2goUcJ8E6y90s4w fR71YYkfYsXMuL1MnxCp/xOS5EbodYWskyLicNee7SlBAqInraaQG8syBGUFb+4S zvILMp7Zc1sBIxhATA== =1LW2 -----END PGP SIGNATURE----- Merge tag 'hardening-v6.9-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull more hardening updates from Kees Cook: - CONFIG_MEMCPY_SLOW_KUNIT_TEST is no longer needed (Guenter Roeck) - Fix needless UTF-8 character in arch/Kconfig (Liu Song) - Improve __counted_by warning message in LKDTM (Nathan Chancellor) - Refactor DEFINE_FLEX() for default use of __counted_by - Disable signed integer overflow sanitizer on GCC < 8 * tag 'hardening-v6.9-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: lkdtm/bugs: Improve warning message for compilers without counted_by support overflow: Change DEFINE_FLEX to take __counted_by member Revert "kunit: memcpy: Split slow memcpy tests into MEMCPY_SLOW_KUNIT_TEST" arch/Kconfig: eliminate needless UTF-8 character in Kconfig help ubsan: Disable signed integer overflow sanitizer on GCC < 8 |
||
|
Kees Cook
|
d8e45f2929 |
overflow: Change DEFINE_FLEX to take __counted_by member
The norm should be flexible array structures with __counted_by annotations, so DEFINE_FLEX() is updated to expect that. Rename the non-annotated version to DEFINE_RAW_FLEX(), and update the few existing users. Additionally add selftests for the macros. Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20240306235128.it.933-kees@kernel.org Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Linus Torvalds
|
4f55aa85a8 |
fbdev fixes and cleanups for 6.9-rc1:
- Allow console fonts up to 64x128 pixels (Samuel Thibault) - Prevent division-by-zero in fb monitor code (Roman Smirnov) - Drop Renesas ARM platforms from Mobile LCDC framebuffer driver (Geert Uytterhoeven) - Various code cleanups in viafb, uveafb and mb862xxfb drivers by Aleksandr Burakov, Li Zhijian and Michael Ellerman -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQS86RI+GtKfB8BJu973ErUQojoPXwUCZfx/jAAKCRD3ErUQojoP XxYoAP9EYvCtd+nxlUvnhS4fXUeTCXZJQA+HiXCORm6DGv7lUgD9EatR9b69CLA3 e4LgzGS/9cybv3uUd3S5lFxsatGZnA8= =DQZN -----END PGP SIGNATURE----- Merge tag 'fbdev-for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev Pull fbdev updates from Helge Deller: - Allow console fonts up to 64x128 pixels (Samuel Thibault) - Prevent division-by-zero in fb monitor code (Roman Smirnov) - Drop Renesas ARM platforms from Mobile LCDC framebuffer driver (Geert Uytterhoeven) - Various code cleanups in viafb, uveafb and mb862xxfb drivers by Aleksandr Burakov, Li Zhijian and Michael Ellerman * tag 'fbdev-for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev: fbdev: panel-tpo-td043mtea1: Convert sprintf() to sysfs_emit() fbmon: prevent division by zero in fb_videomode_from_videomode() fbcon: Increase maximum font width x height to 64 x 128 fbdev: viafb: fix typo in hw_bitblt_1 and hw_bitblt_2 fbdev: mb862xxfb: Fix defined but not used error fbdev: uvesafb: Convert sprintf/snprintf to sysfs_emit fbdev: Restrict FB_SH_MOBILE_LCDC to SuperH |
||
|
Linus Torvalds
|
1d35aae78f |
Kbuild updates for v6.9
- Generate a list of built DTB files (arch/*/boot/dts/dtbs-list)
- Use more threads when building Debian packages in parallel
- Fix warnings shown during the RPM kernel package uninstallation
- Change OBJECT_FILES_NON_STANDARD_*.o etc. to take a relative path to
Makefile
- Support GCC's -fmin-function-alignment flag
- Fix a null pointer dereference bug in modpost
- Add the DTB support to the RPM package
- Various fixes and cleanups in Kconfig
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Merge tag 'kbuild-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Generate a list of built DTB files (arch/*/boot/dts/dtbs-list)
- Use more threads when building Debian packages in parallel
- Fix warnings shown during the RPM kernel package uninstallation
- Change OBJECT_FILES_NON_STANDARD_*.o etc. to take a relative path to
Makefile
- Support GCC's -fmin-function-alignment flag
- Fix a null pointer dereference bug in modpost
- Add the DTB support to the RPM package
- Various fixes and cleanups in Kconfig
* tag 'kbuild-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (67 commits)
kconfig: tests: test dependency after shuffling choices
kconfig: tests: add a test for randconfig with dependent choices
kconfig: tests: support KCONFIG_SEED for the randconfig runner
kbuild: rpm-pkg: add dtb files in kernel rpm
kconfig: remove unneeded menu_is_visible() call in conf_write_defconfig()
kconfig: check prompt for choice while parsing
kconfig: lxdialog: remove unused dialog colors
kconfig: lxdialog: fix button color for blackbg theme
modpost: fix null pointer dereference
kbuild: remove GCC's default -Wpacked-bitfield-compat flag
kbuild: unexport abs_srctree and abs_objtree
kbuild: Move -Wenum-{compare-conditional,enum-conversion} into W=1
kconfig: remove named choice support
kconfig: use linked list in get_symbol_str() to iterate over menus
kconfig: link menus to a symbol
kbuild: fix inconsistent indentation in top Makefile
kbuild: Use -fmin-function-alignment when available
alpha: merge two entries for CONFIG_ALPHA_GAMMA
alpha: merge two entries for CONFIG_ALPHA_EV4
kbuild: change DTC_FLAGS_<basetarget>.o to take the path relative to $(obj)
...
|
||
|
Linus Torvalds
|
241590e5a1 |
Driver core changes for 6.9-rc1
Here is the "big" set of driver core and kernfs changes for 6.9-rc1.
Nothing all that crazy here, just some good updates that include:
- automatic attribute group hiding from Dan Williams (he fixed up my
horrible attempt at doing this.)
- kobject lock contention fixes from Eric Dumazet
- driver core cleanups from Andy
- kernfs rcu work from Tejun
- fw_devlink changes to resolve some reported issues
- other minor changes, all details in the shortlog
All of these have been in linux-next for a long time with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the "big" set of driver core and kernfs changes for 6.9-rc1.
Nothing all that crazy here, just some good updates that include:
- automatic attribute group hiding from Dan Williams (he fixed up my
horrible attempt at doing this.)
- kobject lock contention fixes from Eric Dumazet
- driver core cleanups from Andy
- kernfs rcu work from Tejun
- fw_devlink changes to resolve some reported issues
- other minor changes, all details in the shortlog
All of these have been in linux-next for a long time with no reported
issues"
* tag 'driver-core-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (28 commits)
device: core: Log warning for devices pending deferred probe on timeout
driver: core: Use dev_* instead of pr_* so device metadata is added
driver: core: Log probe failure as error and with device metadata
of: property: fw_devlink: Add support for "post-init-providers" property
driver core: Add FWLINK_FLAG_IGNORE to completely ignore a fwnode link
driver core: Adds flags param to fwnode_link_add()
debugfs: fix wait/cancellation handling during remove
device property: Don't use "proxy" headers
device property: Move enum dev_dma_attr to fwnode.h
driver core: Move fw_devlink stuff to where it belongs
driver core: Drop unneeded 'extern' keyword in fwnode.h
firmware_loader: Suppress warning on FW_OPT_NO_WARN flag
sysfs:Addresses documentation in sysfs_merge_group and sysfs_unmerge_group.
firmware_loader: introduce __free() cleanup hanler
platform-msi: Remove usage of the deprecated ida_simple_xx() API
sysfs: Introduce DEFINE_SIMPLE_SYSFS_GROUP_VISIBLE()
sysfs: Document new "group visible" helpers
sysfs: Fix crash on empty group attributes array
sysfs: Introduce a mechanism to hide static attribute_groups
sysfs: Introduce a mechanism to hide static attribute_groups
...
|
||
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Linus Torvalds
|
3bcb0bf65c |
TTY/Serial driver update for 6.9-rc1
Here is the big set of TTY/Serial driver updates and cleanups for
6.9-rc1. Included in here are:
- more tty cleanups from Jiri
- loads of 8250 driver cleanups from Andy
- max310x driver updates
- samsung serial driver updates
- uart_prepare_sysrq_char() updates for many drivers
- platform driver remove callback void cleanups
- stm32 driver updates
- other small tty/serial driver updates
All of these have been in linux-next for a long time with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty / serial driver updates from Greg KH:
"Here is the big set of TTY/Serial driver updates and cleanups for
6.9-rc1. Included in here are:
- more tty cleanups from Jiri
- loads of 8250 driver cleanups from Andy
- max310x driver updates
- samsung serial driver updates
- uart_prepare_sysrq_char() updates for many drivers
- platform driver remove callback void cleanups
- stm32 driver updates
- other small tty/serial driver updates
All of these have been in linux-next for a long time with no reported
issues"
* tag 'tty-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (199 commits)
dt-bindings: serial: stm32: add power-domains property
serial: 8250_dw: Replace ACPI device check by a quirk
serial: Lock console when calling into driver before registration
serial: 8250_uniphier: Switch to use uart_read_port_properties()
serial: 8250_tegra: Switch to use uart_read_port_properties()
serial: 8250_pxa: Switch to use uart_read_port_properties()
serial: 8250_omap: Switch to use uart_read_port_properties()
serial: 8250_of: Switch to use uart_read_port_properties()
serial: 8250_lpc18xx: Switch to use uart_read_port_properties()
serial: 8250_ingenic: Switch to use uart_read_port_properties()
serial: 8250_dw: Switch to use uart_read_port_properties()
serial: 8250_bcm7271: Switch to use uart_read_port_properties()
serial: 8250_bcm2835aux: Switch to use uart_read_port_properties()
serial: 8250_aspeed_vuart: Switch to use uart_read_port_properties()
serial: port: Introduce a common helper to read properties
serial: core: Add UPIO_UNKNOWN constant for unknown port type
serial: core: Move struct uart_port::quirks closer to possible values
serial: sh-sci: Call sci_serial_{in,out}() directly
serial: core: only stop transmit when HW fifo is empty
serial: pch: Use uart_prepare_sysrq_char().
...
|
||
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Guenter Roeck
|
acd80cdcee |
Revert "kunit: memcpy: Split slow memcpy tests into MEMCPY_SLOW_KUNIT_TEST"
This reverts commit |
||
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Kees Cook
|
77fcc34769 |
ubsan: Disable signed integer overflow sanitizer on GCC < 8
For opting functions out of sanitizer coverage, the "no_sanitize" attribute is used, but in GCC this wasn't introduced until GCC 8. Disable the sanitizer unless we're not using GCC, or it is GCC version 8 or higher. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202403110643.27JXEVCI-lkp@intel.com/ Reviewed-by: Marco Elver <elver@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Linus Torvalds
|
02c163e959 |
cxl for v6.9
- Supplement ACPI HMAT reported memory performance with native CXL
memory performance enumeration
- Add support for CXL error injection via the ACPI EINJ mechanism
- Cleanup CXL DOE and CDAT integration
- Miscellaneous cleanups and fixes
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Merge tag 'cxl-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull CXL updates from Dan Williams:
"CXL has mechanisms to enumerate the performance characteristics of
memory devices. Those mechanisms allow Linux to build the equivalent
of ACPI SRAT, SLIT, and HMAT tables dynamically at runtime. That
capability is necessary because static ACPI can not represent dynamic
CXL configurations (and reconfigurations).
So, building on the v6.8 work to add "Quality of Service" enumeration,
this update plumbs CXL "access coordinates" (read/write access latency
and bandwidth) in all the same places that ACPI HMAT feeds similar
data. Follow-on patches from the -mm side can then use that data to
feed mechanisms like mm/memory-tiers.c. Greg has acked the touch to
drivers/base/.
The other feature update this cycle is support for CXL error injection
via the ACPI EINJ module. That facility enables injection of bus
protocol errors provided the user knows the magic address values to
insert in the interface. To hide that magic, and make this easier to
use, new error injection attributes were added to CXL debugfs. That
interface injects the errors relative to a CXL object rather than
require user tooling to know how to lookup and inject RCRB (Root
Complex Register Block) addresses into the raw EINJ debugfs interface.
It received some helpful review comments from Tony, but no explicit
acks from the ACPI side. The primary user visible change for existing
EINJ users is that they may find that einj.ko was already loaded by
cxl_core.ko. Previously, einj.ko was only loaded on demand.
The usual collection of miscellaneous cleanups are also present this
cycle.
Summary:
- Supplement ACPI HMAT reported memory performance with native CXL
memory performance enumeration
- Add support for CXL error injection via the ACPI EINJ mechanism
- Cleanup CXL DOE and CDAT integration
- Miscellaneous cleanups and fixes"
* tag 'cxl-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (21 commits)
Documentation/ABI/testing/debugfs-cxl: Fix "Unexpected indentation"
lib/firmware_table: Provide buffer length argument to cdat_table_parse()
cxl/pci: Get rid of pointer arithmetic reading CDAT table
cxl/pci: Rename DOE mailbox handle to doe_mb
cxl: Fix the incorrect assignment of SSLBIS entry pointer initial location
cxl/core: Add CXL EINJ debugfs files
EINJ, Documentation: Update EINJ kernel doc
EINJ: Add CXL error type support
EINJ: Migrate to a platform driver
cxl/region: Deal with numa nodes not enumerated by SRAT
cxl/region: Add memory hotplug notifier for cxl region
cxl/region: Add sysfs attribute for locality attributes of CXL regions
cxl/region: Calculate performance data for a region
cxl: Set cxlmd->endpoint before adding port device
cxl: Move QoS class to be calculated from the nearest CPU
cxl: Split out host bridge access coordinates
cxl: Split out combine_coordinates() for common shared usage
ACPI: HMAT / cxl: Add retrieval of generic port coordinates for both access classes
ACPI: HMAT: Introduce 2 levels of generic port access class
base/node / ACPI: Enumerate node access class for 'struct access_coordinate'
...
|
||
|
Samuel Thibault
|
152609795d |
fbcon: Increase maximum font width x height to 64 x 128
By using bitmaps we actually support whatever size we would want, but the console currently limits fonts to 64x128 (which gives 60x16 text on 4k screens), so we don't need more for now, and we can easily increase later. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Linus Torvalds
|
8a2fbffcbf |
This includes the following changes related to sparc for v6.9:
- Fix missing prototype warnings in various places, including switching to using generic cmpdi2/ucmpdi2 and parport.h and stop selecting unneeded GENERIC_ISA_DMA. - Reduce duplicate code by using shared font data, with dependency fixup in separate commit touching lib/fonts. - Convert sbus drives to use remove callbacks returning void - Fix return values of __setup handlers - Section mismatch fix for grpci pci drivers - Make the vio bus type constant - Kconfig cleanups and fixes - Typo fixes -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQQfqfbgobF48oKMeq81AykqDLayywUCZfQtuhQcYW5kcmVhc0Bn YWlzbGVyLmNvbQAKCRA1AykqDLayy85XAQChTv3muYGiLSyX2r5leQrxZwWNjdiw W6uc+pM6nCVryAEA+KtjosgriNo7wZViEWqXyYjs/csdEekLpj4U2qBphAg= =19B/ -----END PGP SIGNATURE----- Merge tag 'sparc-for-6.9-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/alarsson/linux-sparc Pull sparc updates from Andreas Larsson: - Fix missing prototype warnings in various places, including switching to using generic cmpdi2/ucmpdi2 and parport.h and stop selecting unneeded GENERIC_ISA_DMA. - Reduce duplicate code by using shared font data, with dependency fixup in separate commit touching lib/fonts. - Convert sbus drives to use remove callbacks returning void - Fix return values of __setup handlers - Section mismatch fix for grpci pci drivers - Make the vio bus type constant - Kconfig cleanups and fixes - Typo fixes * tag 'sparc-for-6.9-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/alarsson/linux-sparc: lib/fonts: Allow Sparc console 8x16 font for sparc64 early boot text console sbus: uctrl: Convert to platform remove callback returning void sbus: flash: Convert to platform remove callback returning void sbus: envctrl: Convert to platform remove callback returning void sbus: display7seg: Convert to platform remove callback returning void sbus: bbc_i2c: Convert to platform remove callback returning void sbus: Add prototype for bbc_envctrl_init and bbc_envctrl_cleanup to header sparc32: Fix section mismatch in leon_pci_grpci sparc32: Fix parport build with sparc32 sparc32: Do not select GENERIC_ISA_DMA mtd: maps: sun_uflash: Declare uflash_devinit static sparc32: Fix build with trapbase sparc32: Use generic cmpdi2/ucmpdi2 variants sparc: select FRAME_POINTER instead of redefining it sparc: vDSO: fix return value of __setup handler sparc64: NMI watchdog: fix return value of __setup handler sparc: vio: make vio_bus_type const sparc: Fix typos sparc: Use shared font data sparc: remove obsolete config ARCH_ATU |
||
|
Linus Torvalds
|
32a50540c3 |
bcachefs updates for 6.9
- Subvolume children btree; this is needed for providing a userspace
interface for walking subvolumes, which will come later
- Lots of improvements to directory structure checking
- Improved journal pipelining, significantly improving performance on
high iodepth write workloads
- Discard path improvements: the discard path is more efficient, and no
longer flushes the journal unnecessarily
- Buffered write path can now avoid taking the inode lock
- new mm helper: memalloc_flags_{save|restore}
- mempool now does kvmalloc mempools
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Merge tag 'bcachefs-2024-03-13' of https://evilpiepirate.org/git/bcachefs
Pull bcachefs updates from Kent Overstreet:
- Subvolume children btree; this is needed for providing a userspace
interface for walking subvolumes, which will come later
- Lots of improvements to directory structure checking
- Improved journal pipelining, significantly improving performance on
high iodepth write workloads
- Discard path improvements: the discard path is more efficient, and no
longer flushes the journal unnecessarily
- Buffered write path can now avoid taking the inode lock
- new mm helper: memalloc_flags_{save|restore}
- mempool now does kvmalloc mempools
* tag 'bcachefs-2024-03-13' of https://evilpiepirate.org/git/bcachefs: (128 commits)
bcachefs: time_stats: shrink time_stat_buffer for better alignment
bcachefs: time_stats: split stats-with-quantiles into a separate structure
bcachefs: mean_and_variance: put struct mean_and_variance_weighted on a diet
bcachefs: time_stats: add larger units
bcachefs: pull out time_stats.[ch]
bcachefs: reconstruct_alloc cleanup
bcachefs: fix bch_folio_sector padding
bcachefs: Fix btree key cache coherency during replay
bcachefs: Always flush write buffer in delete_dead_inodes()
bcachefs: Fix order of gc_done passes
bcachefs: fix deletion of indirect extents in btree_gc
bcachefs: Prefer struct_size over open coded arithmetic
bcachefs: Kill unused flags argument to btree_split()
bcachefs: Check for writing superblocks with nonsense member seq fields
bcachefs: fix bch2_journal_buf_to_text()
lib/generic-radix-tree.c: Make nodes more reasonably sized
bcachefs: copy_(to|from)_user_errcode()
bcachefs: Split out bkey_types.h
bcachefs: fix lost journal buf wakeup due to improved pipelining
bcachefs: intercept mountoption value for bool type
...
|
||
|
Linus Torvalds
|
e5eb28f6d1 |
- Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min
heap optimizations". - Kuan-Wei Chiu has also sped up the library sorting code in the series "lib/sort: Optimize the number of swaps and comparisons". - Alexey Gladkov has added the ability for code running within an IPC namespace to alter its IPC and MQ limits. The series is "Allow to change ipc/mq sysctls inside ipc namespace". - Geert Uytterhoeven has contributed some dhrystone maintenance work in the series "lib: dhry: miscellaneous cleanups". - Ryusuke Konishi continues nilfs2 maintenance work in the series "nilfs2: eliminate kmap and kmap_atomic calls" "nilfs2: fix kernel bug at submit_bh_wbc()" - Nathan Chancellor has updated our build tools requirements in the series "Bump the minimum supported version of LLVM to 13.0.1". - Muhammad Usama Anjum continues with the selftests maintenance work in the series "selftests/mm: Improve run_vmtests.sh". - Oleg Nesterov has done some maintenance work against the signal code in the series "get_signal: minor cleanups and fix". Plus the usual shower of singleton patches in various parts of the tree. Please see the individual changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZfMnvgAKCRDdBJ7gKXxA jjKMAP4/Upq07D4wjkMVPb+QrkipbbLpdcgJ++q3z6rba4zhPQD+M3SFriIJk/Xh tKVmvihFxfAhdDthseXcIf1nBjMALwY= =8rVc -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2024-03-14-09-36' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min heap optimizations". - Kuan-Wei Chiu has also sped up the library sorting code in the series "lib/sort: Optimize the number of swaps and comparisons". - Alexey Gladkov has added the ability for code running within an IPC namespace to alter its IPC and MQ limits. The series is "Allow to change ipc/mq sysctls inside ipc namespace". - Geert Uytterhoeven has contributed some dhrystone maintenance work in the series "lib: dhry: miscellaneous cleanups". - Ryusuke Konishi continues nilfs2 maintenance work in the series "nilfs2: eliminate kmap and kmap_atomic calls" "nilfs2: fix kernel bug at submit_bh_wbc()" - Nathan Chancellor has updated our build tools requirements in the series "Bump the minimum supported version of LLVM to 13.0.1". - Muhammad Usama Anjum continues with the selftests maintenance work in the series "selftests/mm: Improve run_vmtests.sh". - Oleg Nesterov has done some maintenance work against the signal code in the series "get_signal: minor cleanups and fix". Plus the usual shower of singleton patches in various parts of the tree. Please see the individual changelogs for details. * tag 'mm-nonmm-stable-2024-03-14-09-36' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (77 commits) nilfs2: prevent kernel bug at submit_bh_wbc() nilfs2: fix failure to detect DAT corruption in btree and direct mappings ocfs2: enable ocfs2_listxattr for special files ocfs2: remove SLAB_MEM_SPREAD flag usage assoc_array: fix the return value in assoc_array_insert_mid_shortcut() buildid: use kmap_local_page() watchdog/core: remove sysctl handlers from public header nilfs2: use div64_ul() instead of do_div() mul_u64_u64_div_u64: increase precision by conditionally swapping a and b kexec: copy only happens before uchunk goes to zero get_signal: don't initialize ksig->info if SIGNAL_GROUP_EXIT/group_exec_task get_signal: hide_si_addr_tag_bits: fix the usage of uninitialized ksig get_signal: don't abuse ksig->info.si_signo and ksig->sig const_structs.checkpatch: add device_type Normalise "name (ad@dr)" MODULE_AUTHORs to "name <ad@dr>" dyndbg: replace kstrdup() + strchr() with kstrdup_and_replace() list: leverage list_is_head() for list_entry_is_head() nilfs2: MAINTAINERS: drop unreachable project mirror site smp: make __smp_processor_id() 0-argument macro fat: fix uninitialized field in nostale filehandles ... |
||
|
Linus Torvalds
|
902861e34c |
- Sumanth Korikkar has taught s390 to allocate hotplug-time page frames
from hotplugged memory rather than only from main memory. Series
"implement "memmap on memory" feature on s390".
- More folio conversions from Matthew Wilcox in the series
"Convert memcontrol charge moving to use folios"
"mm: convert mm counter to take a folio"
- Chengming Zhou has optimized zswap's rbtree locking, providing
significant reductions in system time and modest but measurable
reductions in overall runtimes. The series is "mm/zswap: optimize the
scalability of zswap rb-tree".
- Chengming Zhou has also provided the series "mm/zswap: optimize zswap
lru list" which provides measurable runtime benefits in some
swap-intensive situations.
- And Chengming Zhou further optimizes zswap in the series "mm/zswap:
optimize for dynamic zswap_pools". Measured improvements are modest.
- zswap cleanups and simplifications from Yosry Ahmed in the series "mm:
zswap: simplify zswap_swapoff()".
- In the series "Add DAX ABI for memmap_on_memory", Vishal Verma has
contributed several DAX cleanups as well as adding a sysfs tunable to
control the memmap_on_memory setting when the dax device is hotplugged
as system memory.
- Johannes Weiner has added the large series "mm: zswap: cleanups",
which does that.
- More DAMON work from SeongJae Park in the series
"mm/damon: make DAMON debugfs interface deprecation unignorable"
"selftests/damon: add more tests for core functionalities and corner cases"
"Docs/mm/damon: misc readability improvements"
"mm/damon: let DAMOS feeds and tame/auto-tune itself"
- In the series "mm/mempolicy: weighted interleave mempolicy and sysfs
extension" Rakie Kim has developed a new mempolicy interleaving policy
wherein we allocate memory across nodes in a weighted fashion rather
than uniformly. This is beneficial in heterogeneous memory environments
appearing with CXL.
- Christophe Leroy has contributed some cleanup and consolidation work
against the ARM pagetable dumping code in the series "mm: ptdump:
Refactor CONFIG_DEBUG_WX and check_wx_pages debugfs attribute".
- Luis Chamberlain has added some additional xarray selftesting in the
series "test_xarray: advanced API multi-index tests".
- Muhammad Usama Anjum has reworked the selftest code to make its
human-readable output conform to the TAP ("Test Anything Protocol")
format. Amongst other things, this opens up the use of third-party
tools to parse and process out selftesting results.
- Ryan Roberts has added fork()-time PTE batching of THP ptes in the
series "mm/memory: optimize fork() with PTE-mapped THP". Mainly
targeted at arm64, this significantly speeds up fork() when the process
has a large number of pte-mapped folios.
- David Hildenbrand also gets in on the THP pte batching game in his
series "mm/memory: optimize unmap/zap with PTE-mapped THP". It
implements batching during munmap() and other pte teardown situations.
The microbenchmark improvements are nice.
- And in the series "Transparent Contiguous PTEs for User Mappings" Ryan
Roberts further utilizes arm's pte's contiguous bit ("contpte
mappings"). Kernel build times on arm64 improved nicely. Ryan's series
"Address some contpte nits" provides some followup work.
- In the series "mm/hugetlb: Restore the reservation" Breno Leitao has
fixed an obscure hugetlb race which was causing unnecessary page faults.
He has also added a reproducer under the selftest code.
- In the series "selftests/mm: Output cleanups for the compaction test",
Mark Brown did what the title claims.
- Kinsey Ho has added the series "mm/mglru: code cleanup and refactoring".
- Even more zswap material from Nhat Pham. The series "fix and extend
zswap kselftests" does as claimed.
- In the series "Introduce cpu_dcache_is_aliasing() to fix DAX
regression" Mathieu Desnoyers has cleaned up and fixed rather a mess in
our handling of DAX on archiecctures which have virtually aliasing data
caches. The arm architecture is the main beneficiary.
- Lokesh Gidra's series "per-vma locks in userfaultfd" provides dramatic
improvements in worst-case mmap_lock hold times during certain
userfaultfd operations.
- Some page_owner enhancements and maintenance work from Oscar Salvador
in his series
"page_owner: print stacks and their outstanding allocations"
"page_owner: Fixup and cleanup"
- Uladzislau Rezki has contributed some vmalloc scalability improvements
in his series "Mitigate a vmap lock contention". It realizes a 12x
improvement for a certain microbenchmark.
- Some kexec/crash cleanup work from Baoquan He in the series "Split
crash out from kexec and clean up related config items".
- Some zsmalloc maintenance work from Chengming Zhou in the series
"mm/zsmalloc: fix and optimize objects/page migration"
"mm/zsmalloc: some cleanup for get/set_zspage_mapping()"
- Zi Yan has taught the MM to perform compaction on folios larger than
order=0. This a step along the path to implementaton of the merging of
large anonymous folios. The series is named "Enable >0 order folio
memory compaction".
- Christoph Hellwig has done quite a lot of cleanup work in the
pagecache writeback code in his series "convert write_cache_pages() to
an iterator".
- Some modest hugetlb cleanups and speedups in Vishal Moola's series
"Handle hugetlb faults under the VMA lock".
- Zi Yan has changed the page splitting code so we can split huge pages
into sizes other than order-0 to better utilize large folios. The
series is named "Split a folio to any lower order folios".
- David Hildenbrand has contributed the series "mm: remove
total_mapcount()", a cleanup.
- Matthew Wilcox has sought to improve the performance of bulk memory
freeing in his series "Rearrange batched folio freeing".
- Gang Li's series "hugetlb: parallelize hugetlb page init on boot"
provides large improvements in bootup times on large machines which are
configured to use large numbers of hugetlb pages.
- Matthew Wilcox's series "PageFlags cleanups" does that.
- Qi Zheng's series "minor fixes and supplement for ptdesc" does that
also. S390 is affected.
- Cleanups to our pagemap utility functions from Peter Xu in his series
"mm/treewide: Replace pXd_large() with pXd_leaf()".
- Nico Pache has fixed a few things with our hugepage selftests in his
series "selftests/mm: Improve Hugepage Test Handling in MM Selftests".
- Also, of course, many singleton patches to many things. Please see
the individual changelogs for details.
-----BEGIN PGP SIGNATURE-----
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-----END PGP SIGNATURE-----
Merge tag 'mm-stable-2024-03-13-20-04' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Sumanth Korikkar has taught s390 to allocate hotplug-time page frames
from hotplugged memory rather than only from main memory. Series
"implement "memmap on memory" feature on s390".
- More folio conversions from Matthew Wilcox in the series
"Convert memcontrol charge moving to use folios"
"mm: convert mm counter to take a folio"
- Chengming Zhou has optimized zswap's rbtree locking, providing
significant reductions in system time and modest but measurable
reductions in overall runtimes. The series is "mm/zswap: optimize the
scalability of zswap rb-tree".
- Chengming Zhou has also provided the series "mm/zswap: optimize zswap
lru list" which provides measurable runtime benefits in some
swap-intensive situations.
- And Chengming Zhou further optimizes zswap in the series "mm/zswap:
optimize for dynamic zswap_pools". Measured improvements are modest.
- zswap cleanups and simplifications from Yosry Ahmed in the series
"mm: zswap: simplify zswap_swapoff()".
- In the series "Add DAX ABI for memmap_on_memory", Vishal Verma has
contributed several DAX cleanups as well as adding a sysfs tunable to
control the memmap_on_memory setting when the dax device is
hotplugged as system memory.
- Johannes Weiner has added the large series "mm: zswap: cleanups",
which does that.
- More DAMON work from SeongJae Park in the series
"mm/damon: make DAMON debugfs interface deprecation unignorable"
"selftests/damon: add more tests for core functionalities and corner cases"
"Docs/mm/damon: misc readability improvements"
"mm/damon: let DAMOS feeds and tame/auto-tune itself"
- In the series "mm/mempolicy: weighted interleave mempolicy and sysfs
extension" Rakie Kim has developed a new mempolicy interleaving
policy wherein we allocate memory across nodes in a weighted fashion
rather than uniformly. This is beneficial in heterogeneous memory
environments appearing with CXL.
- Christophe Leroy has contributed some cleanup and consolidation work
against the ARM pagetable dumping code in the series "mm: ptdump:
Refactor CONFIG_DEBUG_WX and check_wx_pages debugfs attribute".
- Luis Chamberlain has added some additional xarray selftesting in the
series "test_xarray: advanced API multi-index tests".
- Muhammad Usama Anjum has reworked the selftest code to make its
human-readable output conform to the TAP ("Test Anything Protocol")
format. Amongst other things, this opens up the use of third-party
tools to parse and process out selftesting results.
- Ryan Roberts has added fork()-time PTE batching of THP ptes in the
series "mm/memory: optimize fork() with PTE-mapped THP". Mainly
targeted at arm64, this significantly speeds up fork() when the
process has a large number of pte-mapped folios.
- David Hildenbrand also gets in on the THP pte batching game in his
series "mm/memory: optimize unmap/zap with PTE-mapped THP". It
implements batching during munmap() and other pte teardown
situations. The microbenchmark improvements are nice.
- And in the series "Transparent Contiguous PTEs for User Mappings"
Ryan Roberts further utilizes arm's pte's contiguous bit ("contpte
mappings"). Kernel build times on arm64 improved nicely. Ryan's
series "Address some contpte nits" provides some followup work.
- In the series "mm/hugetlb: Restore the reservation" Breno Leitao has
fixed an obscure hugetlb race which was causing unnecessary page
faults. He has also added a reproducer under the selftest code.
- In the series "selftests/mm: Output cleanups for the compaction
test", Mark Brown did what the title claims.
- Kinsey Ho has added the series "mm/mglru: code cleanup and
refactoring".
- Even more zswap material from Nhat Pham. The series "fix and extend
zswap kselftests" does as claimed.
- In the series "Introduce cpu_dcache_is_aliasing() to fix DAX
regression" Mathieu Desnoyers has cleaned up and fixed rather a mess
in our handling of DAX on archiecctures which have virtually aliasing
data caches. The arm architecture is the main beneficiary.
- Lokesh Gidra's series "per-vma locks in userfaultfd" provides
dramatic improvements in worst-case mmap_lock hold times during
certain userfaultfd operations.
- Some page_owner enhancements and maintenance work from Oscar Salvador
in his series
"page_owner: print stacks and their outstanding allocations"
"page_owner: Fixup and cleanup"
- Uladzislau Rezki has contributed some vmalloc scalability
improvements in his series "Mitigate a vmap lock contention". It
realizes a 12x improvement for a certain microbenchmark.
- Some kexec/crash cleanup work from Baoquan He in the series "Split
crash out from kexec and clean up related config items".
- Some zsmalloc maintenance work from Chengming Zhou in the series
"mm/zsmalloc: fix and optimize objects/page migration"
"mm/zsmalloc: some cleanup for get/set_zspage_mapping()"
- Zi Yan has taught the MM to perform compaction on folios larger than
order=0. This a step along the path to implementaton of the merging
of large anonymous folios. The series is named "Enable >0 order folio
memory compaction".
- Christoph Hellwig has done quite a lot of cleanup work in the
pagecache writeback code in his series "convert write_cache_pages()
to an iterator".
- Some modest hugetlb cleanups and speedups in Vishal Moola's series
"Handle hugetlb faults under the VMA lock".
- Zi Yan has changed the page splitting code so we can split huge pages
into sizes other than order-0 to better utilize large folios. The
series is named "Split a folio to any lower order folios".
- David Hildenbrand has contributed the series "mm: remove
total_mapcount()", a cleanup.
- Matthew Wilcox has sought to improve the performance of bulk memory
freeing in his series "Rearrange batched folio freeing".
- Gang Li's series "hugetlb: parallelize hugetlb page init on boot"
provides large improvements in bootup times on large machines which
are configured to use large numbers of hugetlb pages.
- Matthew Wilcox's series "PageFlags cleanups" does that.
- Qi Zheng's series "minor fixes and supplement for ptdesc" does that
also. S390 is affected.
- Cleanups to our pagemap utility functions from Peter Xu in his series
"mm/treewide: Replace pXd_large() with pXd_leaf()".
- Nico Pache has fixed a few things with our hugepage selftests in his
series "selftests/mm: Improve Hugepage Test Handling in MM
Selftests".
- Also, of course, many singleton patches to many things. Please see
the individual changelogs for details.
* tag 'mm-stable-2024-03-13-20-04' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (435 commits)
mm/zswap: remove the memcpy if acomp is not sleepable
crypto: introduce: acomp_is_async to expose if comp drivers might sleep
memtest: use {READ,WRITE}_ONCE in memory scanning
mm: prohibit the last subpage from reusing the entire large folio
mm: recover pud_leaf() definitions in nopmd case
selftests/mm: skip the hugetlb-madvise tests on unmet hugepage requirements
selftests/mm: skip uffd hugetlb tests with insufficient hugepages
selftests/mm: dont fail testsuite due to a lack of hugepages
mm/huge_memory: skip invalid debugfs new_order input for folio split
mm/huge_memory: check new folio order when split a folio
mm, vmscan: retry kswapd's priority loop with cache_trim_mode off on failure
mm: add an explicit smp_wmb() to UFFDIO_CONTINUE
mm: fix list corruption in put_pages_list
mm: remove folio from deferred split list before uncharging it
filemap: avoid unnecessary major faults in filemap_fault()
mm,page_owner: drop unnecessary check
mm,page_owner: check for null stack_record before bumping its refcount
mm: swap: fix race between free_swap_and_cache() and swapoff()
mm/treewide: align up pXd_leaf() retval across archs
mm/treewide: drop pXd_large()
...
|
||
|
Linus Torvalds
|
705c1da8fa |
pci-v6.9-changes
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Merge tag 'pci-v6.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration:
- Consolidate interrupt related code in irq.c (Ilpo Järvinen)
- Reduce kernel size by replacing sysfs resource macros with
functions (Ilpo Järvinen)
- Reduce kernel size by compiling sysfs support only when
CONFIG_SYSFS=y (Lukas Wunner)
- Avoid using Extended Tags on 3ware-9650SE Root Port to work around
an apparent hardware defect (Jörg Wedekind)
Resource management:
- Fix an MMIO mapping leak in pci_iounmap() (Philipp Stanner)
- Move pci_iomap.c and other PCI-specific devres code to drivers/pci
(Philipp Stanner)
- Consolidate PCI devres code in devres.c (Philipp Stanner)
Power management:
- Avoid D3cold on Asus B1400 PCI-NVMe bridge, where firmware doesn't
know how to return correctly to D0, and remove previous quirk that
wasn't as specific (Daniel Drake)
- Allow runtime PM when the driver enables it but doesn't need any
runtime PM callbacks (Raag Jadav)
- Drain runtime-idle callbacks before driver removal to avoid races
between .remove() and .runtime_idle(), which caused intermittent
page faults when the rtsx .runtime_idle() accessed registers that
its .remove() had already unmapped (Rafael J. Wysocki)
Virtualization:
- Avoid Secondary Bus Reset on LSI FW643 so it can be assigned to VMs
with VFIO, e.g., for professional audio software on many Apple
machines, at the cost of leaking state between VMs (Edmund Raile)
Error handling:
- Print all logged TLP Prefixes, not just the first, after AER or DPC
errors (Ilpo Järvinen)
- Quirk the DPC PIO log size for Intel Raptor Lake Root Ports, which
still don't advertise a legal size (Paul Menzel)
- Ignore expected DPC Surprise Down errors on hot removal (Smita
Koralahalli)
- Block runtime suspend while handling AER errors to avoid races that
prevent the device form being resumed from D3hot (Stanislaw
Gruszka)
Peer-to-peer DMA:
- Use atomic XA allocation in RCU read section (Christophe JAILLET)
ASPM:
- Collect bits of ASPM-related code that we need even without
CONFIG_PCIEASPM into aspm.c (David E. Box)
- Save/restore L1 PM Substates config for suspend/resume (David E.
Box)
- Update save_save when ASPM config is changed, so a .slot_reset()
during error recovery restores the changed config, not the
.probe()-time config (Vidya Sagar)
Endpoint framework:
- Refactor and improve pci_epf_alloc_space() API (Niklas Cassel)
- Clean up endpoint BAR descriptions (Niklas Cassel)
- Fix ntb_register_device() name leak in error path (Yang Yingliang)
- Return actual error code for pci_vntb_probe() failure (Yang
Yingliang)
Broadcom STB PCIe controller driver:
- Fix MDIO write polling, which previously never waited for
completion (Jonathan Bell)
Cadence PCIe endpoint driver:
- Clear the ARI "Next Function Number" of last function (Jasko-EXT
Wojciech)
Freescale i.MX6 PCIe controller driver:
- Simplify by replacing switch statements with function pointers for
different hardware variants (Frank Li)
- Simplify by using clk_bulk*() API (Frank Li)
- Remove redundant DT clock and reg/reg-name details (Frank Li)
- Add i.MX95 DT and driver support for both Root Complex and Endpoint
mode (Frank Li)
Microsoft Hyper-V host bridge driver:
- Reduce memory usage by limiting ring buffer size to 16KB instead of
4 pages (Michael Kelley)
Qualcomm PCIe controller driver:
- Add X1E80100 DT and driver support (Abel Vesa)
- Add DT 'required-opps' for SoCs that require a minimum performance
level (Johan Hovold)
- Make DT 'msi-map-mask' optional, depending on how MSI interrupts
are mapped (Johan Hovold)
- Disable ASPM L0s for sc8280xp, sa8540p and sa8295p because the PHY
configuration isn't tuned correctly for L0s (Johan Hovold)
- Split dt-binding qcom,pcie.yaml into qcom,pcie-common.yaml and
separate files for SA8775p, SC7280, SC8180X, SC8280XP, SM8150,
SM8250, SM8350, SM8450, SM8550 for easier reviewing (Krzysztof
Kozlowski)
- Enable BDF to SID translation by disabling bypass mode (Manivannan
Sadhasivam)
- Add endpoint MHI support for Snapdragon SA8775P SoC (Mrinmay
Sarkar)
Synopsys DesignWare PCIe controller driver:
- Allocate 64-bit MSI address if no 32-bit address is available (Ajay
Agarwal)
- Fix endpoint Resizable BAR to actually advertise the required 1MB
size (Niklas Cassel)
MicroSemi Switchtec management driver:
- Release resources if the .probe() fails (Christophe JAILLET)
Miscellaneous:
- Make pcie_port_bus_type const (Ricardo B. Marliere)"
* tag 'pci-v6.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (77 commits)
PCI/ASPM: Update save_state when configuration changes
PCI/ASPM: Disable L1 before configuring L1 Substates
PCI/ASPM: Call pci_save_ltr_state() from pci_save_pcie_state()
PCI/ASPM: Save L1 PM Substates Capability for suspend/resume
PCI: hv: Fix ring buffer size calculation
PCI: dwc: endpoint: Fix advertised resizable BAR size
PCI: cadence: Clear the ARI Capability Next Function Number of the last function
PCI: dwc: Strengthen the MSI address allocation logic
PCI: brcmstb: Fix broken brcm_pcie_mdio_write() polling
PCI: qcom: Add X1E80100 PCIe support
dt-bindings: PCI: qcom: Document the X1E80100 PCIe Controller
PCI: qcom: Enable BDF to SID translation properly
PCI/AER: Generalize TLP Header Log reading
PCI/AER: Use explicit register size for PCI_ERR_CAP
PCI: qcom: Disable ASPM L0s for sc8280xp, sa8540p and sa8295p
dt-bindings: PCI: qcom: Do not require 'msi-map-mask'
dt-bindings: PCI: qcom: Allow 'required-opps'
PCI/AER: Block runtime suspend when handling errors
PCI/ASPM: Move pci_save_ltr_state() to aspm.c
PCI/ASPM: Always build aspm.c
...
|
||
|
Kent Overstreet
|
3a319a2476 |
lib/generic-radix-tree.c: Make nodes more reasonably sized
this code originally used the page allocator directly, but most code shouldn't do that - PAGE_SIZE varies with architecture, and slab is faster. 4k is also on the large side for typical usage, 512 bytes is a better choice for typical usage that might be somewhat sparse. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
||
|
Linus Torvalds
|
ce0c1c9265 |
Modules changes for v6.9-rc1
Christophe Leroy did most of the work on this release, first with a few
cleanups on CONFIG_STRICT_KERNEL_RWX and ending with error handling for
when set_memory_XX() can fail. This is part of a larger effort to clean
up all these callers which can fail, modules is just part of it.
This has been sitting on linux-next for about a month without issues.
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Merge tag 'modules-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
Pull modules updates from Luis Chamberlain:
"Christophe Leroy did most of the work on this release, first with a
few cleanups on CONFIG_STRICT_KERNEL_RWX and ending with error
handling for when set_memory_XX() can fail.
This is part of a larger effort to clean up all these callers which
can fail, modules is just part of it"
* tag 'modules-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
module: Don't ignore errors from set_memory_XX()
lib/test_kmod: fix kernel-doc warnings
powerpc: Simplify strict_kernel_rwx_enabled()
modules: Remove #ifdef CONFIG_STRICT_MODULE_RWX around rodata_enabled
init: Declare rodata_enabled and mark_rodata_ro() at all time
module: Change module_enable_{nx/x/ro}() to more explicit names
module: Use set_memory_rox()
|
||
|
Robert Richter
|
c6c3187d66 |
lib/firmware_table: Provide buffer length argument to cdat_table_parse()
There exist card implementations with a CDAT table using a fixed size buffer, but with entries filled in that do not fill the whole table length size. Then, the last entry in the CDAT table may not mark the end of the CDAT table buffer specified by the length field in the CDAT header. It can be shorter with trailing unused (zero'ed) data. The actual table length is determined while reading all CDAT entries of the table with DOE. If the table is greater than expected (containing zero'ed trailing data), the CDAT parser fails with: [ 48.691717] Malformed DSMAS table length: (24:0) [ 48.702084] [CDAT:0x00] Invalid zero length [ 48.711460] cxl_port endpoint1: Failed to parse CDAT: -22 In addition, a check of the table buffer length is missing to prevent an out-of-bound access then parsing the CDAT table. Hardening code against device returning borked table. Fix that by providing an optional buffer length argument to acpi_parse_entries_array() that can be used by cdat_table_parse() to propagate the buffer size down to its users to check the buffer length. This also prevents a possible out-of-bound access mentioned. Add a check to warn about a malformed CDAT table length. Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Len Brown <lenb@kernel.org> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Robert Richter <rrichter@amd.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/ZdEnopFO0Tl3t2O1@rric.localdomain Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
||
|
Linus Torvalds
|
b0546776ad |
printk changes for 6.9
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Merge tag 'printk-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk updates from Petr Mladek:
"Improve the behavior during panic. The issues were found when testing
the ongoing changes introducing atomic consoles and printk kthreads:
- pr_flush() has to wait for the last reserved record instead of the
last finalized one. Note that records are finalized in random order
when generated by more CPUs in parallel.
- Ignore non-finalized records during panic(). Messages printed on
panic-CPU are always finalized. Messages printed by other CPUs
might never be finalized when the CPUs get stopped.
- Block new printk() calls on non-panic CPUs completely. Backtraces
are printed before entering the panic mode. Later messages would
just mess information printed by the panic CPU.
- Do not take console_lock in console_flush_on_panic() at all. The
original code did try_lock()/console_unlock(). The unlock part
might cause a deadlock when panic() happened in a scheduler code.
- Fix conversion of 64-bit sequence number for 32-bit atomic
operations"
* tag 'printk-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
dump_stack: Do not get cpu_sync for panic CPU
panic: Flush kernel log buffer at the end
printk: Avoid non-panic CPUs writing to ringbuffer
printk: Disable passing console lock owner completely during panic()
printk: ringbuffer: Skip non-finalized records in panic
printk: Wait for all reserved records with pr_flush()
printk: ringbuffer: Cleanup reader terminology
printk: Add this_cpu_in_panic()
printk: For @suppress_panic_printk check for other CPU in panic
printk: ringbuffer: Clarify special lpos values
printk: ringbuffer: Do not skip non-finalized records with prb_next_seq()
printk: Use prb_first_seq() as base for 32bit seq macros
printk: Adjust mapping for 32bit seq macros
printk: nbcon: Relocate 32bit seq macros
|
||
|
Linus Torvalds
|
9187210eee |
Networking changes for 6.9.
Core & protocols
----------------
- Large effort by Eric to lower rtnl_lock pressure and remove locks:
- Make commonly used parts of rtnetlink (address, route dumps etc.)
lockless, protected by RCU instead of rtnl_lock.
- Add a netns exit callback which already holds rtnl_lock,
allowing netns exit to take rtnl_lock once in the core
instead of once for each driver / callback.
- Remove locks / serialization in the socket diag interface.
- Remove 6 calls to synchronize_rcu() while holding rtnl_lock.
- Remove the dev_base_lock, depend on RCU where necessary.
- Support busy polling on a per-epoll context basis. Poll length
and budget parameters can be set independently of system defaults.
- Introduce struct net_hotdata, to make sure read-mostly global config
variables fit in as few cache lines as possible.
- Add optional per-nexthop statistics to ease monitoring / debug
of ECMP imbalance problems.
- Support TCP_NOTSENT_LOWAT in MPTCP.
- Ensure that IPv6 temporary addresses' preferred lifetimes are long
enough, compared to other configured lifetimes, and at least 2 sec.
- Support forwarding of ICMP Error messages in IPSec, per RFC 4301.
- Add support for the independent control state machine for bonding
per IEEE 802.1AX-2008 5.4.15 in addition to the existing coupled
control state machine.
- Add "network ID" to MCTP socket APIs to support hosts with multiple
disjoint MCTP networks.
- Re-use the mono_delivery_time skbuff bit for packets which user
space wants to be sent at a specified time. Maintain the timing
information while traversing veth links, bridge etc.
- Take advantage of MSG_SPLICE_PAGES for RxRPC DATA and ACK packets.
- Simplify many places iterating over netdevs by using an xarray
instead of a hash table walk (hash table remains in place, for
use on fastpaths).
- Speed up scanning for expired routes by keeping a dedicated list.
- Speed up "generic" XDP by trying harder to avoid large allocations.
- Support attaching arbitrary metadata to netconsole messages.
Things we sprinkled into general kernel code
--------------------------------------------
- Enforce VM_IOREMAP flag and range in ioremap_page_range and introduce
VM_SPARSE kind and vm_area_[un]map_pages (used by bpf_arena).
- Rework selftest harness to enable the use of the full range of
ksft exit code (pass, fail, skip, xfail, xpass).
Netfilter
---------
- Allow userspace to define a table that is exclusively owned by a daemon
(via netlink socket aliveness) without auto-removing this table when
the userspace program exits. Such table gets marked as orphaned and
a restarting management daemon can re-attach/regain ownership.
- Speed up element insertions to nftables' concatenated-ranges set type.
Compact a few related data structures.
BPF
---
- Add BPF token support for delegating a subset of BPF subsystem
functionality from privileged system-wide daemons such as systemd
through special mount options for userns-bound BPF fs to a trusted
& unprivileged application.
- Introduce bpf_arena which is sparse shared memory region between BPF
program and user space where structures inside the arena can have
pointers to other areas of the arena, and pointers work seamlessly
for both user-space programs and BPF programs.
- Introduce may_goto instruction that is a contract between the verifier
and the program. The verifier allows the program to loop assuming it's
behaving well, but reserves the right to terminate it.
- Extend the BPF verifier to enable static subprog calls in spin lock
critical sections.
- Support registration of struct_ops types from modules which helps
projects like fuse-bpf that seeks to implement a new struct_ops type.
- Add support for retrieval of cookies for perf/kprobe multi links.
- Support arbitrary TCP SYN cookie generation / validation in the TC
layer with BPF to allow creating SYN flood handling in BPF firewalls.
- Add code generation to inline the bpf_kptr_xchg() helper which
improves performance when stashing/popping the allocated BPF objects.
Wireless
--------
- Add SPP (signaling and payload protected) AMSDU support.
- Support wider bandwidth OFDMA, as required for EHT operation.
Driver API
----------
- Major overhaul of the Energy Efficient Ethernet internals to support
new link modes (2.5GE, 5GE), share more code between drivers
(especially those using phylib), and encourage more uniform behavior.
Convert and clean up drivers.
- Define an API for querying per netdev queue statistics from drivers.
- IPSec: account in global stats for fully offloaded sessions.
- Create a concept of Ethernet PHY Packages at the Device Tree level,
to allow parameterizing the existing PHY package code.
- Enable Rx hashing (RSS) on GTP protocol fields.
Misc
----
- Improvements and refactoring all over networking selftests.
- Create uniform module aliases for TC classifiers, actions,
and packet schedulers to simplify creating modprobe policies.
- Address all missing MODULE_DESCRIPTION() warnings in networking.
- Extend the Netlink descriptions in YAML to cover message encapsulation
or "Netlink polymorphism", where interpretation of nested attributes
depends on link type, classifier type or some other "class type".
Drivers
-------
- Ethernet high-speed NICs:
- Add a new driver for Marvell's Octeon PCI Endpoint NIC VF.
- Intel (100G, ice, idpf):
- support E825-C devices
- nVidia/Mellanox:
- support devices with one port and multiple PCIe links
- Broadcom (bnxt):
- support n-tuple filters
- support configuring the RSS key
- Wangxun (ngbe/txgbe):
- implement irq_domain for TXGBE's sub-interrupts
- Pensando/AMD:
- support XDP
- optimize queue submission and wakeup handling (+17% bps)
- optimize struct layout, saving 28% of memory on queues
- Ethernet NICs embedded and virtual:
- Google cloud vNIC:
- refactor driver to perform memory allocations for new queue
config before stopping and freeing the old queue memory
- Synopsys (stmmac):
- obey queueMaxSDU and implement counters required by 802.1Qbv
- Renesas (ravb):
- support packet checksum offload
- suspend to RAM and runtime PM support
- Ethernet switches:
- nVidia/Mellanox:
- support for nexthop group statistics
- Microchip:
- ksz8: implement PHY loopback
- add support for KSZ8567, a 7-port 10/100Mbps switch
- PTP:
- New driver for RENESAS FemtoClock3 Wireless clock generator.
- Support OCP PTP cards designed and built by Adva.
- CAN:
- Support recvmsg() flags for own, local and remote traffic
on CAN BCM sockets.
- Support for esd GmbH PCIe/402 CAN device family.
- m_can:
- Rx/Tx submission coalescing
- wake on frame Rx
- WiFi:
- Intel (iwlwifi):
- enable signaling and payload protected A-MSDUs
- support wider-bandwidth OFDMA
- support for new devices
- bump FW API to 89 for AX devices; 90 for BZ/SC devices
- MediaTek (mt76):
- mt7915: newer ADIE version support
- mt7925: radio temperature sensor support
- Qualcomm (ath11k):
- support 6 GHz station power modes: Low Power Indoor (LPI),
Standard Power) SP and Very Low Power (VLP)
- QCA6390 & WCN6855: support 2 concurrent station interfaces
- QCA2066 support
- Qualcomm (ath12k):
- refactoring in preparation for Multi-Link Operation (MLO) support
- 1024 Block Ack window size support
- firmware-2.bin support
- support having multiple identical PCI devices (firmware needs to
have ATH12K_FW_FEATURE_MULTI_QRTR_ID)
- QCN9274: support split-PHY devices
- WCN7850: enable Power Save Mode in station mode
- WCN7850: P2P support
- RealTek:
- rtw88: support for more rtw8811cu and rtw8821cu devices
- rtw89: support SCAN_RANDOM_SN and SET_SCAN_DWELL
- rtlwifi: speed up USB firmware initialization
- rtwl8xxxu:
- RTL8188F: concurrent interface support
- Channel Switch Announcement (CSA) support in AP mode
- Broadcom (brcmfmac):
- per-vendor feature support
- per-vendor SAE password setup
- DMI nvram filename quirk for ACEPC W5 Pro
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Large effort by Eric to lower rtnl_lock pressure and remove locks:
- Make commonly used parts of rtnetlink (address, route dumps
etc) lockless, protected by RCU instead of rtnl_lock.
- Add a netns exit callback which already holds rtnl_lock,
allowing netns exit to take rtnl_lock once in the core instead
of once for each driver / callback.
- Remove locks / serialization in the socket diag interface.
- Remove 6 calls to synchronize_rcu() while holding rtnl_lock.
- Remove the dev_base_lock, depend on RCU where necessary.
- Support busy polling on a per-epoll context basis. Poll length and
budget parameters can be set independently of system defaults.
- Introduce struct net_hotdata, to make sure read-mostly global
config variables fit in as few cache lines as possible.
- Add optional per-nexthop statistics to ease monitoring / debug of
ECMP imbalance problems.
- Support TCP_NOTSENT_LOWAT in MPTCP.
- Ensure that IPv6 temporary addresses' preferred lifetimes are long
enough, compared to other configured lifetimes, and at least 2 sec.
- Support forwarding of ICMP Error messages in IPSec, per RFC 4301.
- Add support for the independent control state machine for bonding
per IEEE 802.1AX-2008 5.4.15 in addition to the existing coupled
control state machine.
- Add "network ID" to MCTP socket APIs to support hosts with multiple
disjoint MCTP networks.
- Re-use the mono_delivery_time skbuff bit for packets which user
space wants to be sent at a specified time. Maintain the timing
information while traversing veth links, bridge etc.
- Take advantage of MSG_SPLICE_PAGES for RxRPC DATA and ACK packets.
- Simplify many places iterating over netdevs by using an xarray
instead of a hash table walk (hash table remains in place, for use
on fastpaths).
- Speed up scanning for expired routes by keeping a dedicated list.
- Speed up "generic" XDP by trying harder to avoid large allocations.
- Support attaching arbitrary metadata to netconsole messages.
Things we sprinkled into general kernel code:
- Enforce VM_IOREMAP flag and range in ioremap_page_range and
introduce VM_SPARSE kind and vm_area_[un]map_pages (used by
bpf_arena).
- Rework selftest harness to enable the use of the full range of ksft
exit code (pass, fail, skip, xfail, xpass).
Netfilter:
- Allow userspace to define a table that is exclusively owned by a
daemon (via netlink socket aliveness) without auto-removing this
table when the userspace program exits. Such table gets marked as
orphaned and a restarting management daemon can re-attach/regain
ownership.
- Speed up element insertions to nftables' concatenated-ranges set
type. Compact a few related data structures.
BPF:
- Add BPF token support for delegating a subset of BPF subsystem
functionality from privileged system-wide daemons such as systemd
through special mount options for userns-bound BPF fs to a trusted
& unprivileged application.
- Introduce bpf_arena which is sparse shared memory region between
BPF program and user space where structures inside the arena can
have pointers to other areas of the arena, and pointers work
seamlessly for both user-space programs and BPF programs.
- Introduce may_goto instruction that is a contract between the
verifier and the program. The verifier allows the program to loop
assuming it's behaving well, but reserves the right to terminate
it.
- Extend the BPF verifier to enable static subprog calls in spin lock
critical sections.
- Support registration of struct_ops types from modules which helps
projects like fuse-bpf that seeks to implement a new struct_ops
type.
- Add support for retrieval of cookies for perf/kprobe multi links.
- Support arbitrary TCP SYN cookie generation / validation in the TC
layer with BPF to allow creating SYN flood handling in BPF
firewalls.
- Add code generation to inline the bpf_kptr_xchg() helper which
improves performance when stashing/popping the allocated BPF
objects.
Wireless:
- Add SPP (signaling and payload protected) AMSDU support.
- Support wider bandwidth OFDMA, as required for EHT operation.
Driver API:
- Major overhaul of the Energy Efficient Ethernet internals to
support new link modes (2.5GE, 5GE), share more code between
drivers (especially those using phylib), and encourage more
uniform behavior. Convert and clean up drivers.
- Define an API for querying per netdev queue statistics from
drivers.
- IPSec: account in global stats for fully offloaded sessions.
- Create a concept of Ethernet PHY Packages at the Device Tree level,
to allow parameterizing the existing PHY package code.
- Enable Rx hashing (RSS) on GTP protocol fields.
Misc:
- Improvements and refactoring all over networking selftests.
- Create uniform module aliases for TC classifiers, actions, and
packet schedulers to simplify creating modprobe policies.
- Address all missing MODULE_DESCRIPTION() warnings in networking.
- Extend the Netlink descriptions in YAML to cover message
encapsulation or "Netlink polymorphism", where interpretation of
nested attributes depends on link type, classifier type or some
other "class type".
Drivers:
- Ethernet high-speed NICs:
- Add a new driver for Marvell's Octeon PCI Endpoint NIC VF.
- Intel (100G, ice, idpf):
- support E825-C devices
- nVidia/Mellanox:
- support devices with one port and multiple PCIe links
- Broadcom (bnxt):
- support n-tuple filters
- support configuring the RSS key
- Wangxun (ngbe/txgbe):
- implement irq_domain for TXGBE's sub-interrupts
- Pensando/AMD:
- support XDP
- optimize queue submission and wakeup handling (+17% bps)
- optimize struct layout, saving 28% of memory on queues
- Ethernet NICs embedded and virtual:
- Google cloud vNIC:
- refactor driver to perform memory allocations for new queue
config before stopping and freeing the old queue memory
- Synopsys (stmmac):
- obey queueMaxSDU and implement counters required by 802.1Qbv
- Renesas (ravb):
- support packet checksum offload
- suspend to RAM and runtime PM support
- Ethernet switches:
- nVidia/Mellanox:
- support for nexthop group statistics
- Microchip:
- ksz8: implement PHY loopback
- add support for KSZ8567, a 7-port 10/100Mbps switch
- PTP:
- New driver for RENESAS FemtoClock3 Wireless clock generator.
- Support OCP PTP cards designed and built by Adva.
- CAN:
- Support recvmsg() flags for own, local and remote traffic on CAN
BCM sockets.
- Support for esd GmbH PCIe/402 CAN device family.
- m_can:
- Rx/Tx submission coalescing
- wake on frame Rx
- WiFi:
- Intel (iwlwifi):
- enable signaling and payload protected A-MSDUs
- support wider-bandwidth OFDMA
- support for new devices
- bump FW API to 89 for AX devices; 90 for BZ/SC devices
- MediaTek (mt76):
- mt7915: newer ADIE version support
- mt7925: radio temperature sensor support
- Qualcomm (ath11k):
- support 6 GHz station power modes: Low Power Indoor (LPI),
Standard Power) SP and Very Low Power (VLP)
- QCA6390 & WCN6855: support 2 concurrent station interfaces
- QCA2066 support
- Qualcomm (ath12k):
- refactoring in preparation for Multi-Link Operation (MLO)
support
- 1024 Block Ack window size support
- firmware-2.bin support
- support having multiple identical PCI devices (firmware needs
to have ATH12K_FW_FEATURE_MULTI_QRTR_ID)
- QCN9274: support split-PHY devices
- WCN7850: enable Power Save Mode in station mode
- WCN7850: P2P support
- RealTek:
- rtw88: support for more rtw8811cu and rtw8821cu devices
- rtw89: support SCAN_RANDOM_SN and SET_SCAN_DWELL
- rtlwifi: speed up USB firmware initialization
- rtwl8xxxu:
- RTL8188F: concurrent interface support
- Channel Switch Announcement (CSA) support in AP mode
- Broadcom (brcmfmac):
- per-vendor feature support
- per-vendor SAE password setup
- DMI nvram filename quirk for ACEPC W5 Pro"
* tag 'net-next-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2255 commits)
nexthop: Fix splat with CONFIG_DEBUG_PREEMPT=y
nexthop: Fix out-of-bounds access during attribute validation
nexthop: Only parse NHA_OP_FLAGS for dump messages that require it
nexthop: Only parse NHA_OP_FLAGS for get messages that require it
bpf: move sleepable flag from bpf_prog_aux to bpf_prog
bpf: hardcode BPF_PROG_PACK_SIZE to 2MB * num_possible_nodes()
selftests/bpf: Add kprobe multi triggering benchmarks
ptp: Move from simple ida to xarray
vxlan: Remove generic .ndo_get_stats64
vxlan: Do not alloc tstats manually
devlink: Add comments to use netlink gen tool
nfp: flower: handle acti_netdevs allocation failure
net/packet: Add getsockopt support for PACKET_COPY_THRESH
net/netlink: Add getsockopt support for NETLINK_LISTEN_ALL_NSID
selftests/bpf: Add bpf_arena_htab test.
selftests/bpf: Add bpf_arena_list test.
selftests/bpf: Add unit tests for bpf_arena_alloc/free_pages
bpf: Add helper macro bpf_addr_space_cast()
libbpf: Recognize __arena global variables.
bpftool: Recognize arena map type
...
|
||
|
Linus Torvalds
|
216532e147 |
hardening updates for v6.9-rc1
- string.h and related header cleanups (Tanzir Hasan, Andy Shevchenko)
- VMCI memcpy() usage and struct_size() cleanups (Vasiliy Kovalev, Harshit
Mogalapalli)
- selftests/powerpc: Fix load_unaligned_zeropad build failure (Michael
Ellerman)
- hardened Kconfig fragment updates (Marco Elver, Lukas Bulwahn)
- Handle tail call optimization better in LKDTM (Douglas Anderson)
- Use long form types in overflow.h (Andy Shevchenko)
- Add flags param to string_get_size() (Andy Shevchenko)
- Add Coccinelle script for potential struct_size() use (Jacob Keller)
- Fix objtool corner case under KCFI (Josh Poimboeuf)
- Drop 13 year old backward compat CAP_SYS_ADMIN check (Jingzi Meng)
- Add str_plural() helper (Michal Wajdeczko, Kees Cook)
- Ignore relocations in .notes section
- Add comments to explain how __is_constexpr() works
- Fix m68k stack alignment expectations in stackinit Kunit test
- Convert string selftests to KUnit
- Add KUnit tests for fortified string functions
- Improve reporting during fortified string warnings
- Allow non-type arg to type_max() and type_min()
- Allow strscpy() to be called with only 2 arguments
- Add binary mode to leaking_addresses scanner
- Various small cleanups to leaking_addresses scanner
- Adding wrapping_*() arithmetic helper
- Annotate initial signed integer wrap-around in refcount_t
- Add explicit UBSAN section to MAINTAINERS
- Fix UBSAN self-test warnings
- Simplify UBSAN build via removal of CONFIG_UBSAN_SANITIZE_ALL
- Reintroduce UBSAN's signed overflow sanitizer
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Merge tag 'hardening-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
"As is pretty normal for this tree, there are changes all over the
place, especially for small fixes, selftest improvements, and improved
macro usability.
Some header changes ended up landing via this tree as they depended on
the string header cleanups. Also, a notable set of changes is the work
for the reintroduction of the UBSAN signed integer overflow sanitizer
so that we can continue to make improvements on the compiler side to
make this sanitizer a more viable future security hardening option.
Summary:
- string.h and related header cleanups (Tanzir Hasan, Andy
Shevchenko)
- VMCI memcpy() usage and struct_size() cleanups (Vasiliy Kovalev,
Harshit Mogalapalli)
- selftests/powerpc: Fix load_unaligned_zeropad build failure
(Michael Ellerman)
- hardened Kconfig fragment updates (Marco Elver, Lukas Bulwahn)
- Handle tail call optimization better in LKDTM (Douglas Anderson)
- Use long form types in overflow.h (Andy Shevchenko)
- Add flags param to string_get_size() (Andy Shevchenko)
- Add Coccinelle script for potential struct_size() use (Jacob
Keller)
- Fix objtool corner case under KCFI (Josh Poimboeuf)
- Drop 13 year old backward compat CAP_SYS_ADMIN check (Jingzi Meng)
- Add str_plural() helper (Michal Wajdeczko, Kees Cook)
- Ignore relocations in .notes section
- Add comments to explain how __is_constexpr() works
- Fix m68k stack alignment expectations in stackinit Kunit test
- Convert string selftests to KUnit
- Add KUnit tests for fortified string functions
- Improve reporting during fortified string warnings
- Allow non-type arg to type_max() and type_min()
- Allow strscpy() to be called with only 2 arguments
- Add binary mode to leaking_addresses scanner
- Various small cleanups to leaking_addresses scanner
- Adding wrapping_*() arithmetic helper
- Annotate initial signed integer wrap-around in refcount_t
- Add explicit UBSAN section to MAINTAINERS
- Fix UBSAN self-test warnings
- Simplify UBSAN build via removal of CONFIG_UBSAN_SANITIZE_ALL
- Reintroduce UBSAN's signed overflow sanitizer"
* tag 'hardening-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (51 commits)
selftests/powerpc: Fix load_unaligned_zeropad build failure
string: Convert helpers selftest to KUnit
string: Convert selftest to KUnit
sh: Fix build with CONFIG_UBSAN=y
compiler.h: Explain how __is_constexpr() works
overflow: Allow non-type arg to type_max() and type_min()
VMCI: Fix possible memcpy() run-time warning in vmci_datagram_invoke_guest_handler()
lib/string_helpers: Add flags param to string_get_size()
x86, relocs: Ignore relocations in .notes section
objtool: Fix UNWIND_HINT_{SAVE,RESTORE} across basic blocks
overflow: Use POD in check_shl_overflow()
lib: stackinit: Adjust target string to 8 bytes for m68k
sparc: vdso: Disable UBSAN instrumentation
kernel.h: Move lib/cmdline.c prototypes to string.h
leaking_addresses: Provide mechanism to scan binary files
leaking_addresses: Ignore input device status lines
leaking_addresses: Use File::Temp for /tmp files
MAINTAINERS: Update LEAKING_ADDRESSES details
fortify: Improve buffer overflow reporting
fortify: Add KUnit tests for runtime overflows
...
|
||
|
Roman Smirnov
|
bea0a58695 |
assoc_array: fix the return value in assoc_array_insert_mid_shortcut()
Returning the edit variable is redundant because it is dereferenced right before it is returned. It would be better to return true. Found by Linux Verification Center (linuxtesting.org) with Svace. Link: https://lkml.kernel.org/r/20240307071717.5318-1-r.smirnov@omp.ru Signed-off-by: Roman Smirnov <r.smirnov@omp.ru> Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peng Hao
|
c44f063e74 |
buildid: use kmap_local_page()
Use kmap_local_page() instead of kmap_atomic() which has been deprecated. Link: https://lkml.kernel.org/r/20240306034804.62087-1-flyingpeng@tencent.com Signed-off-by: Peng Hao <flyingpeng@tencent.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Uwe Kleine-König
|
8c86fb68ff |
mul_u64_u64_div_u64: increase precision by conditionally swapping a and b
As indicated in the added comment, the algorithm works better if b is big. As multiplication is commutative, a and b can be swapped. Do this if a is bigger than b. Link: https://lkml.kernel.org/r/20240303092408.662449-2-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Tested-by: Biju Das <biju.das.jz@bp.renesas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
691632f0e8 |
s390 updates for 6.9 merge window
- Various virtual vs physical address usage fixes
- Fix error handling in Processor Activity Instrumentation device driver, and
export number of counters with a sysfs file
- Allow for multiple events when Processor Activity Instrumentation counters
are monitored in system wide sampling
- Change multiplier and shift values of the Time-of-Day clock source to improve
steering precision
- Remove a couple of unneeded GFP_DMA flags from allocations
- Disable mmap alignment if randomize_va_space is also disabled, to avoid a too
small heap
- Various changes to allow s390 to be compiled with LLVM=1, since ld.lld and
llvm-objcopy will have proper s390 support witch clang 19
- Add __uninitialized macro to Compiler Attributes. This is helpful with s390's
FPU code where some users have up to 520 byte stack frames. Clearing such
stack frames (if INIT_STACK_ALL_PATTERN or INIT_STACK_ALL_ZERO is enabled)
before they are used contradicts the intention (performance improvement) of
such code sections.
- Convert switch_to() to an out-of-line function, and use the generic switch_to
header file
- Replace the usage of s390's debug feature with pr_debug() calls within the
zcrypt device driver
- Improve hotplug support of the Adjunct Processor device driver
- Improve retry handling in the zcrypt device driver
- Various changes to the in-kernel FPU code:
- Make in-kernel FPU sections preemptible
- Convert various larger inline assemblies and assembler files to C, mainly
by using singe instruction inline assemblies. This increases readability,
but also allows makes it easier to add proper instrumentation hooks
- Cleanup of the header files
- Provide fast variants of csum_partial() and csum_partial_copy_nocheck() based
on vector instructions
- Introduce and use a lock to synchronize accesses to zpci device data
structures to avoid inconsistent states caused by concurrent accesses
- Compile the kernel without -fPIE. This addresses the following problems if
the kernel is compiled with -fPIE:
- It uses dynamic symbols (.dynsym), for which the linker refuses to allow
more than 64k sections. This can break features which use
'-ffunction-sections' and '-fdata-sections', including kpatch-build and
function granular KASLR
- It unnecessarily uses GOT relocations, adding an extra layer of indirection
for many memory accesses
- Fix shared_cpu_list for CPU private L2 caches, which incorrectly were
reported as globally shared
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Merge tag 's390-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Heiko Carstens:
- Various virtual vs physical address usage fixes
- Fix error handling in Processor Activity Instrumentation device
driver, and export number of counters with a sysfs file
- Allow for multiple events when Processor Activity Instrumentation
counters are monitored in system wide sampling
- Change multiplier and shift values of the Time-of-Day clock source to
improve steering precision
- Remove a couple of unneeded GFP_DMA flags from allocations
- Disable mmap alignment if randomize_va_space is also disabled, to
avoid a too small heap
- Various changes to allow s390 to be compiled with LLVM=1, since
ld.lld and llvm-objcopy will have proper s390 support witch clang 19
- Add __uninitialized macro to Compiler Attributes. This is helpful
with s390's FPU code where some users have up to 520 byte stack
frames. Clearing such stack frames (if INIT_STACK_ALL_PATTERN or
INIT_STACK_ALL_ZERO is enabled) before they are used contradicts the
intention (performance improvement) of such code sections.
- Convert switch_to() to an out-of-line function, and use the generic
switch_to header file
- Replace the usage of s390's debug feature with pr_debug() calls
within the zcrypt device driver
- Improve hotplug support of the Adjunct Processor device driver
- Improve retry handling in the zcrypt device driver
- Various changes to the in-kernel FPU code:
- Make in-kernel FPU sections preemptible
- Convert various larger inline assemblies and assembler files to
C, mainly by using singe instruction inline assemblies. This
increases readability, but also allows makes it easier to add
proper instrumentation hooks
- Cleanup of the header files
- Provide fast variants of csum_partial() and
csum_partial_copy_nocheck() based on vector instructions
- Introduce and use a lock to synchronize accesses to zpci device data
structures to avoid inconsistent states caused by concurrent accesses
- Compile the kernel without -fPIE. This addresses the following
problems if the kernel is compiled with -fPIE:
- It uses dynamic symbols (.dynsym), for which the linker refuses
to allow more than 64k sections. This can break features which
use '-ffunction-sections' and '-fdata-sections', including
kpatch-build and function granular KASLR
- It unnecessarily uses GOT relocations, adding an extra layer of
indirection for many memory accesses
- Fix shared_cpu_list for CPU private L2 caches, which incorrectly were
reported as globally shared
* tag 's390-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (117 commits)
s390/tools: handle rela R_390_GOTPCDBL/R_390_GOTOFF64
s390/cache: prevent rebuild of shared_cpu_list
s390/crypto: remove retry loop with sleep from PAES pkey invocation
s390/pkey: improve pkey retry behavior
s390/zcrypt: improve zcrypt retry behavior
s390/zcrypt: introduce retries on in-kernel send CPRB functions
s390/ap: introduce mutex to lock the AP bus scan
s390/ap: rework ap_scan_bus() to return true on config change
s390/ap: clarify AP scan bus related functions and variables
s390/ap: rearm APQNs bindings complete completion
s390/configs: increase number of LOCKDEP_BITS
s390/vfio-ap: handle hardware checkstop state on queue reset operation
s390/pai: change sampling event assignment for PMU device driver
s390/boot: fix minor comment style damages
s390/boot: do not check for zero-termination relocation entry
s390/boot: make type of __vmlinux_relocs_64_start|end consistent
s390/boot: sanitize kaslr_adjust_relocs() function prototype
s390/boot: simplify GOT handling
s390: vmlinux.lds.S: fix .got.plt assertion
s390/boot: workaround current 'llvm-objdump -t -j ...' behavior
...
|
||
|
Ingo Molnar
|
9ab121d65e |
sched/debug: Allow CONFIG_SCHEDSTATS even on !KERNEL_DEBUG kernels
All major Linux distributions enable CONFIG_SCHEDSTATS, so make it more widely available. Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20240308105901.1096078-6-mingo@kernel.org |
||
|
Linus Torvalds
|
a5b1a017cb |
Locking changes for v6.9:
- Micro-optimize local_xchg() and the rtmutex code on x86 - Fix percpu-rwsem contention tracepoints - Simplify debugging Kconfig dependencies - Update/clarify the documentation of atomic primitives - Misc cleanups Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmXu6EARHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1i7og/8DY/pEGqa/9xYZNE+3NZypuri93XjzFKu i2yN1ymjSmjgQY83ImmP67gBBf7xd3kS0oiHM+lWnPE10pkzIPhleru4iExoyOB6 oMcQSyZALK3uRzxG/EwhuZhE0z9SadB/vkFUDJh677beMRsqfm2QXb4urEcTLUye z4+Tg5zjJvNpKpGoTO7sWj0AfvpEa40RFaGAZEBdmU5CrykLE9tIL6wBEP5RAUcI b8M+tr7D0JD0VGp4zhayEvq2TiwZhhxQ9C5HpVqck7LsfQvoXgBhGtxl/EkXVJ59 PiaLDJAY/D0ocyz1WNB7pFfOdZP6RV0a/5gEzp1uvmRdRV+gEhX88aBmtcc2072p Do5fQwoqNecpHdY1+QY4n5Bq5KYQz9JZl3U1M5g/5dAjDiCo1W+eKk4AlkdymLQQ 4jhCsBFnrQdcrxHIfyHi1ocggs0cUXTCDIRPZSsA1ij51UxcLK2kz/6Ba1jSnFGk iAfcF+Dj68/48zrz9yr+DS1od+oIsj4E+lr0btbj7xf2yiFXKbjPNE5Z8dk3JLay /Eyb5NSZzfT4cpjpwYAoQ/JJySm3i0Uu/llOOIlTTi94waFomFBaCAo7/ujoGOOJ /VHqouGVWaWtv6JhkjikgqzVj34Yr3rqZq9O3SbrZcu4YafKbaLNbzlt5z4zMkQv wSMAPFgvcZQ= =t84c -----END PGP SIGNATURE----- Merge tag 'locking-core-2024-03-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking updates from Ingo Molnar: - Micro-optimize local_xchg() and the rtmutex code on x86 - Fix percpu-rwsem contention tracepoints - Simplify debugging Kconfig dependencies - Update/clarify the documentation of atomic primitives - Misc cleanups * tag 'locking-core-2024-03-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/rtmutex: Use try_cmpxchg_relaxed() in mark_rt_mutex_waiters() locking/x86: Implement local_xchg() using CMPXCHG without the LOCK prefix locking/percpu-rwsem: Trigger contention tracepoints only if contended locking/rwsem: Make DEBUG_RWSEMS and PREEMPT_RT mutually exclusive locking/rwsem: Clarify that RWSEM_READER_OWNED is just a hint locking/mutex: Simplify <linux/mutex.h> locking/qspinlock: Fix 'wait_early' set but not used warning locking/atomic: scripts: Clarify ordering of conditional atomics |
||
|
Linus Torvalds
|
7ea65c89d8 |
vfs-6.9.misc
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Merge tag 'vfs-6.9.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"Misc features, cleanups, and fixes for vfs and individual filesystems.
Features:
- Support idmapped mounts for hugetlbfs.
- Add RWF_NOAPPEND flag for pwritev2(). This allows us to fix a bug
where the passed offset is ignored if the file is O_APPEND. The new
flag allows a caller to enforce that the offset is honored to
conform to posix even if the file was opened in append mode.
- Move i_mmap_rwsem in struct address_space to avoid false sharing
between i_mmap and i_mmap_rwsem.
- Convert efs, qnx4, and coda to use the new mount api.
- Add a generic is_dot_dotdot() helper that's used by various
filesystems and the VFS code instead of open-coding it multiple
times.
- Recently we've added stable offsets which allows stable ordering
when iterating directories exported through NFS on e.g., tmpfs
filesystems. Originally an xarray was used for the offset map but
that caused slab fragmentation issues over time. This switches the
offset map to the maple tree which has a dense mode that handles
this scenario a lot better. Includes tests.
- Finally merge the case-insensitive improvement series Gabriel has
been working on for a long time. This cleanly propagates case
insensitive operations through ->s_d_op which in turn allows us to
remove the quite ugly generic_set_encrypted_ci_d_ops() operations.
It also improves performance by trying a case-sensitive comparison
first and then fallback to case-insensitive lookup if that fails.
This also fixes a bug where overlayfs would be able to be mounted
over a case insensitive directory which would lead to all sort of
odd behaviors.
Cleanups:
- Make file_dentry() a simple accessor now that ->d_real() is
simplified because of the backing file work we did the last two
cycles.
- Use the dedicated file_mnt_idmap helper in ntfs3.
- Use smp_load_acquire/store_release() in the i_size_read/write
helpers and thus remove the hack to handle i_size reads in the
filemap code.
- The SLAB_MEM_SPREAD is a nop now. Remove it from various places in
fs/
- It's no longer necessary to perform a second built-in initramfs
unpack call because we retain the contents of the previous
extraction. Remove it.
- Now that we have removed various allocators kfree_rcu() always
works with kmem caches and kmalloc(). So simplify various places
that only use an rcu callback in order to handle the kmem cache
case.
- Convert the pipe code to use a lockdep comparison function instead
of open-coding the nesting making lockdep validation easier.
- Move code into fs-writeback.c that was located in a header but can
be made static as it's only used in that one file.
- Rewrite the alignment checking iterators for iovec and bvec to be
easier to read, and also significantly more compact in terms of
generated code. This saves 270 bytes of text on x86-64 (with
clang-18) and 224 bytes on arm64 (with gcc-13). In profiles it also
saves a bit of time for the same workload.
- Switch various places to use KMEM_CACHE instead of
kmem_cache_create().
- Use inode_set_ctime_to_ts() in inode_set_ctime_current()
- Use kzalloc() in name_to_handle_at() to avoid kernel infoleak.
- Various smaller cleanups for eventfds.
Fixes:
- Fix various comments and typos, and unneeded initializations.
- Fix stack allocation hack for clang in the select code.
- Improve dump_mapping() debug code on a best-effort basis.
- Fix build errors in various selftests.
- Avoid wrap-around instrumentation in various places.
- Don't allow user namespaces without an idmapping to be used for
idmapped mounts.
- Fix sysv sb_read() call.
- Fix fallback implementation of the get_name() export operation"
* tag 'vfs-6.9.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (70 commits)
hugetlbfs: support idmapped mounts
qnx4: convert qnx4 to use the new mount api
fs: use inode_set_ctime_to_ts to set inode ctime to current time
libfs: Drop generic_set_encrypted_ci_d_ops
ubifs: Configure dentry operations at dentry-creation time
f2fs: Configure dentry operations at dentry-creation time
ext4: Configure dentry operations at dentry-creation time
libfs: Add helper to choose dentry operations at mount-time
libfs: Merge encrypted_ci_dentry_ops and ci_dentry_ops
fscrypt: Drop d_revalidate once the key is added
fscrypt: Drop d_revalidate for valid dentries during lookup
fscrypt: Factor out a helper to configure the lookup dentry
ovl: Always reject mounting over case-insensitive directories
libfs: Attempt exact-match comparison first during casefolded lookup
efs: remove SLAB_MEM_SPREAD flag usage
jfs: remove SLAB_MEM_SPREAD flag usage
minix: remove SLAB_MEM_SPREAD flag usage
openpromfs: remove SLAB_MEM_SPREAD flag usage
proc: remove SLAB_MEM_SPREAD flag usage
qnx6: remove SLAB_MEM_SPREAD flag usage
...
|
||
|
Linus Torvalds
|
97ec9715a8 |
linux_kselftest-kunit-6.9-rc1
This KUnit next update for Linux 6.9-rc1 consists of:
-- fix to make kunit_bus_type const
-- kunit tool change to Print UML command
-- DRM device creation helpers are now using the new kunit device
creation helpers. This change resulted in DRM helpers switching
from using a platform_device, to a dedicated bus and device type
used by kunit. kunit devices don't set DMA mask and this caused
regression on some drm tests as they can't allocate DMA buffers.
Fix this problem by setting DMA masks on the kunit device during
initialization.
-- KUnit has several macros which accept a log message, which can
contain printf format specifiers. Some of these (the explicit
log macros) already use the __printf() gcc attribute to ensure
the format specifiers are valid, but those which could fail the
test, and hence used __kunit_do_failed_assertion() behind the scenes,
did not.
These include: KUNIT_EXPECT_*_MSG(), KUNIT_ASSERT_*_MSG(), and
KUNIT_FAIL()
A 9 patch series adds the __printf() attribute, and fixes all of
the issues uncovered.
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Merge tag 'linux_kselftest-kunit-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull KUnit updates from Shuah Khan:
- fix to make kunit_bus_type const
- kunit tool change to Print UML command
- DRM device creation helpers are now using the new kunit device
creation helpers. This change resulted in DRM helpers switching from
using a platform_device, to a dedicated bus and device type used by
kunit. kunit devices don't set DMA mask and this caused regression on
some drm tests as they can't allocate DMA buffers. Fix this problem
by setting DMA masks on the kunit device during initialization.
- KUnit has several macros which accept a log message, which can
contain printf format specifiers. Some of these (the explicit log
macros) already use the __printf() gcc attribute to ensure the format
specifiers are valid, but those which could fail the test, and hence
used __kunit_do_failed_assertion() behind the scenes, did not.
These include: KUNIT_EXPECT_*_MSG(), KUNIT_ASSERT_*_MSG(), and
KUNIT_FAIL()
A nine-patch series adds the __printf() attribute, and fixes all of
the issues uncovered.
* tag 'linux_kselftest-kunit-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: Annotate _MSG assertion variants with gnu printf specifiers
drm: tests: Fix invalid printf format specifiers in KUnit tests
drm/xe/tests: Fix printf format specifiers in xe_migrate test
net: test: Fix printf format specifier in skb_segment kunit test
rtc: test: Fix invalid format specifier.
time: test: Fix incorrect format specifier
lib: memcpy_kunit: Fix an invalid format specifier in an assertion msg
lib/cmdline: Fix an invalid format specifier in an assertion msg
kunit: test: Log the correct filter string in executor_test
kunit: Setup DMA masks on the kunit device
kunit: make kunit_bus_type const
kunit: Mark filter* params as rw
kunit: tool: Print UML command
|
||
|
Linus Torvalds
|
d451b075f7 |
linux_kselftest-next-6.9-rc1
This kselftest next update for Linux 6.9-rc1 consists of:
-- livepatch restructuring to move the module out of lib to be
built as a out-of-tree modules during kselftest build. This
change makes it easier change, debug and rebuild the tests by
running make on the selftests/livepatch directory, which is not
currently possible since the modules on lib/livepatch are build
and installed using the main makefile modules target.
-- livepatch restructuring fixes for problems found by kernel test
robot. The change skips the test if kernel-devel isn't installed
(default value of KDIR), or if KDIR variable passed doesn't exists.
-- resctrl test restructuring and new non-contiguous CBMs CAT test
-- new ktap_helpers to print diagnostic messages, pass/fail tests
based on exit code, abort test, and finish the test.
-- a new test verify power supply properties.
-- a new ftrace to exercise function tracer across cpu hotplug.
-- timeout increase for mqueue test to allow the test to run on
i3.metal AWS instances.
-- minor spelling corrections in several tests.
-- missing gitignore files and changes to existing gitignore files.
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Merge tag 'linux_kselftest-next-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest update from Shuah Khan:
- livepatch restructuring to move the module out of lib to be built as
a out-of-tree modules during kselftest build. This makes it easier
change, debug and rebuild the tests by running make on the
selftests/livepatch directory, which is not currently possible since
the modules on lib/livepatch are build and installed using the main
makefile modules target.
- livepatch restructuring fixes for problems found by kernel test
robot. The change skips the test if kernel-devel isn't installed
(default value of KDIR), or if KDIR variable passed doesn't exists.
- resctrl test restructuring and new non-contiguous CBMs CAT test
- new ktap_helpers to print diagnostic messages, pass/fail tests based
on exit code, abort test, and finish the test.
- a new test verify power supply properties.
- a new ftrace to exercise function tracer across cpu hotplug.
- timeout increase for mqueue test to allow the test to run on i3.metal
AWS instances.
- minor spelling corrections in several tests.
- missing gitignore files and changes to existing gitignore files.
* tag 'linux_kselftest-next-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (57 commits)
kselftest: Add basic test for probing the rust sample modules
selftests: lib.mk: Do not process TEST_GEN_MODS_DIR
selftests: livepatch: Avoid running the tests if kernel-devel is missing
selftests: livepatch: Add initial .gitignore
selftests/resctrl: Add non-contiguous CBMs CAT test
selftests/resctrl: Add resource_info_file_exists()
selftests/resctrl: Split validate_resctrl_feature_request()
selftests/resctrl: Add a helper for the non-contiguous test
selftests/resctrl: Add test groups and name L3 CAT test L3_CAT
selftests: sched: Fix spelling mistake "hiearchy" -> "hierarchy"
selftests/mqueue: Set timeout to 180 seconds
selftests/ftrace: Add test to exercize function tracer across cpu hotplug
selftest: ftrace: fix minor typo in log
selftests: thermal: intel: workload_hint: add missing gitignore
selftests: thermal: intel: power_floor: add missing gitignore
selftests: uevent: add missing gitignore
selftests: Add test to verify power supply properties
selftests: ktap_helpers: Add a helper to finish the test
selftests: ktap_helpers: Add a helper to abort the test
selftests: ktap_helpers: Add helper to pass/fail test based on exit code
...
|
||
|
Andy Shevchenko
|
de5f843389 |
lib/bitmap: Introduce bitmap_scatter() and bitmap_gather() helpers
These helpers scatters or gathers a bitmap with the help of the mask
position bits parameter.
bitmap_scatter() does the following:
src: 0000000001011010
||||||
+------+|||||
| +----+||||
| |+----+|||
| || +-+||
| || | ||
mask: ...v..vv...v..vv
...0..11...0..10
dst: 0000001100000010
and bitmap_gather() performs this one:
mask: ...v..vv...v..vv
src: 0000001100000010
^ ^^ ^ 0
| || | 10
| || > 010
| |+--> 1010
| +--> 11010
+----> 011010
dst: 0000000000011010
bitmap_gather() can the seen as the reverse bitmap_scatter() operation.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/lkml/20230926052007.3917389-3-andriy.shevchenko@linux.intel.com/
Co-developed-by: Herve Codina <herve.codina@bootlin.com>
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Acked-by: Yury Norov <yury.norov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||
|
Andreas Larsson
|
84b76d0582 |
lib/fonts: Allow Sparc console 8x16 font for sparc64 early boot text console
Allow FONT_SUN8x16 when EARLYFB is enabled for sparc64, even when
FRAMEBUFFER_CONSOLE is not to avoid the following warning for this case
WARNING: unmet direct dependencies detected for FONT_SUN8x16
Depends on [n]: FONT_SUPPORT [=y] && (FRAMEBUFFER_CONSOLE [=n] && (FONTS [=n] || SPARC [=y]) || BOOTX_TEXT)
Selected by [y]:
- EARLYFB [=y] && SPARC64 [=y]
by allowing it in the same manner as is done for powerpc in commit
|
||
|
Jakub Kicinski
|
6025b9135f |
net: dqs: add NIC stall detector based on BQL
softnet_data->time_squeeze is sometimes used as a proxy for host overload or indication of scheduling problems. In practice this statistic is very noisy and has hard to grasp units - e.g. is 10 squeezes a second to be expected, or high? Delaying network (NAPI) processing leads to drops on NIC queues but also RTT bloat, impacting pacing and CA decisions. Stalls are a little hard to detect on the Rx side, because there may simply have not been any packets received in given period of time. Packet timestamps help a little bit, but again we don't know if packets are stale because we're not keeping up or because someone (*cough* cgroups) disabled IRQs for a long time. We can, however, use Tx as a proxy for Rx stalls. Most drivers use combined Rx+Tx NAPIs so if Tx gets starved so will Rx. On the Tx side we know exactly when packets get queued, and completed, so there is no uncertainty. This patch adds stall checks to BQL. Why BQL? Because it's a convenient place to add such checks, already called by most drivers, and it has copious free space in its structures (this patch adds no extra cache references or dirtying to the fast path). The algorithm takes one parameter - max delay AKA stall threshold and increments a counter whenever NAPI got delayed for at least that amount of time. It also records the length of the longest stall. To be precise every time NAPI has not polled for at least stall thrs we check if there were any Tx packets queued between last NAPI run and now - stall_thrs/2. Unlike the classic Tx watchdog this mechanism does not ignore stalls caused by Tx being disabled, or loss of link. I don't think the check is worth the complexity, and stall is a stall, whether due to host overload, flow control, link down... doesn't matter much to the application. We have been running this detector in production at Meta for 2 years, with the threshold of 8ms. It's the lowest value where false positives become rare. There's still a constant stream of reported stalls (especially without the ksoftirqd deferral patches reverted), those who like their stall metrics to be 0 may prefer higher value. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Jakub Kicinski
|
e3afe5dd3a |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts. Adjacent changes: net/core/page_pool_user.c |
||
|
Andy Shevchenko
|
9bea6216f9 |
dyndbg: replace kstrdup() + strchr() with kstrdup_and_replace()
Replace open coded functionalify of kstrdup_and_replace() with a call. Link: https://lkml.kernel.org/r/20240213162741.3102810-1-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Cc: Jason Baron <jbaron@akamai.com> Cc: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
a50026bdb8
|
iov_iter: get rid of 'copy_mc' flag
This flag is only set by one single user: the magical core dumping code that looks up user pages one by one, and then writes them out using their kernel addresses (by using a BVEC_ITER). That actually ends up being a huge problem, because while we do use copy_mc_to_kernel() for this case and it is able to handle the possible machine checks involved, nothing else is really ready to handle the failures caused by the machine check. In particular, as reported by Tong Tiangen, we don't actually support fault_in_iov_iter_readable() on a machine check area. As a result, the usual logic for writing things to a file under a filesystem lock, which involves doing a copy with page faults disabled and then if that fails trying to fault pages in without holding the locks with fault_in_iov_iter_readable() does not work at all. We could decide to always just make the MC copy "succeed" (and filling the destination with zeroes), and that would then create a core dump file that just ignores any machine checks. But honestly, this single special case has been problematic before, and means that all the normal iov_iter code ends up slightly more complex and slower. See for example commit |
||
|
Kees Cook
|
fb57550fcb |
string: Convert helpers selftest to KUnit
Convert test-string_helpers.c to KUnit so it can be easily run with everything else. Failure reporting doesn't need to be open-coded in most places, for example, forcing a failure in the expected output for upper/lower testing looks like this: [12:18:43] # test_upper_lower: EXPECTATION FAILED at lib/string_helpers_kunit.c:579 [12:18:43] Expected dst == strings_upper[i].out, but [12:18:43] dst == "ABCDEFGH1234567890TEST" [12:18:43] strings_upper[i].out == "ABCDEFGH1234567890TeST" [12:18:43] [FAILED] test_upper_lower Currently passes without problems: $ ./tools/testing/kunit/kunit.py run string_helpers ... [12:23:55] Starting KUnit Kernel (1/1)... [12:23:55] ============================================================ [12:23:55] =============== string_helpers (3 subtests) ================ [12:23:55] [PASSED] test_get_size [12:23:55] [PASSED] test_upper_lower [12:23:55] [PASSED] test_unescape [12:23:55] ================= [PASSED] string_helpers ================== [12:23:55] ============================================================ [12:23:55] Testing complete. Ran 3 tests: passed: 3 [12:23:55] Elapsed time: 6.709s total, 0.001s configuring, 6.591s building, 0.066s running Link: https://lore.kernel.org/r/20240301202732.2688342-2-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> |
||
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Kees Cook
|
29d8568849 |
string: Convert selftest to KUnit
Convert test_string.c to KUnit so it can be easily run with everything else. Additional text context is retained for failure reporting. For example, when forcing a bad match, we can see the loop counters reported for the memset() tests: [09:21:52] # test_memset64: ASSERTION FAILED at lib/string_kunit.c:93 [09:21:52] Expected v == 0xa2a1a1a1a1a1a1a1ULL, but [09:21:52] v == -6799976246779207263 (0xa1a1a1a1a1a1a1a1) [09:21:52] 0xa2a1a1a1a1a1a1a1ULL == -6727918652741279327 (0xa2a1a1a1a1a1a1a1) [09:21:52] i:0 j:0 k:0 [09:21:52] [FAILED] test_memset64 Currently passes without problems: $ ./tools/testing/kunit/kunit.py run string ... [09:37:40] Starting KUnit Kernel (1/1)... [09:37:40] ============================================================ [09:37:40] =================== string (6 subtests) ==================== [09:37:40] [PASSED] test_memset16 [09:37:40] [PASSED] test_memset32 [09:37:40] [PASSED] test_memset64 [09:37:40] [PASSED] test_strchr [09:37:40] [PASSED] test_strnchr [09:37:40] [PASSED] test_strspn [09:37:40] ===================== [PASSED] string ====================== [09:37:40] ============================================================ [09:37:40] Testing complete. Ran 6 tests: passed: 6 [09:37:40] Elapsed time: 6.730s total, 0.001s configuring, 6.562s building, 0.131s running Link: https://lore.kernel.org/r/20240301202732.2688342-1-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> |
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Martin Kaiser
|
4c4a52544a |
lib/test_vmalloc.c: use unsigned long constant
Use an unsigned long constant instead of an int constant and a cast. This fixes the checkpatch warning WARNING: Unnecessary typecast of c90 int constant - '(unsigned long) 1' could be '1UL' + align = ((unsigned long) 1) << i; Link: https://lkml.kernel.org/r/20240226191159.39509-4-martin@kaiser.cx Signed-off-by: Martin Kaiser <martin@kaiser.cx> Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Martin Kaiser
|
e2c5bfebab |
lib/test_vmalloc.c: drop empty exit function
The module is never loaded successfully. Therefore, it'll never be unloaded and we can remove the exit function. Link: https://lkml.kernel.org/r/20240226191159.39509-3-martin@kaiser.cx Signed-off-by: Martin Kaiser <martin@kaiser.cx> Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Martin Kaiser
|
44503b97ad |
lib/test_vmalloc.c: fix typo in function name
Fix a typo and change the function name to init_test_configuration. Both caller and definition have the same typo, so the current code already works. Link: https://lkml.kernel.org/r/20240226191159.39509-2-martin@kaiser.cx Signed-off-by: Martin Kaiser <martin@kaiser.cx> Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Dan Carpenter
|
dc24559472 |
lib/stackdepot: off by one in depot_fetch_stack()
The stack_pools[] array has DEPOT_MAX_POOLS. The "pools_num" tracks the
number of pools which are initialized. See depot_init_pool() for more
details.
If pool_index == pools_num_cached, this will read one element beyond what
we want. If not all the pools are initialized, then the pool will be
NULL, triggering a WARN(), and if they are all initialized it will read
one element beyond the end of the array.
Link: https://lkml.kernel.org/r/361ac881-60b7-471f-91e5-5bf8fe8042b2@moroto.mountain
Fixes:
|
||
|
Andy Shevchenko
|
f0b7f8ade9 |
lib/string_helpers: Add flags param to string_get_size()
The new flags parameter allows controlling - Whether or not the units suffix is separated by a space, for compatibility with sort -h - Whether or not to append a B suffix - we're not always printing bytes. Co-developed-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Kent Overstreet <kent.overstreet@linux.dev> Link: https://lore.kernel.org/r/20240229205345.93902-1-andriy.shevchenko@linux.intel.com Signed-off-by: Kees Cook <keescook@chromium.org> |
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|
Jakub Kicinski
|
65f5dd4f02 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: net/mptcp/protocol.c |
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Kees Cook
|
c2efa5387c |
lib: stackinit: Adjust target string to 8 bytes for m68k
For reasons I cannot understand, m68k moves the start of the stack frame for consecutive calls to the same function if the function's test variable is larger than 8 bytes. This was only happening for the char array test (obviously), so adjust the length of the string for m68k only. I want the array size to be longer than "unsigned long" for every given architecture, so the other remain unchanged. Additionally adjust the error message to be a bit more clear about what's happened, and move the KUNIT check outside of the consecutive calls to minimize what happens between them. Reported-by: Guenter Roeck <linux@roeck-us.net> Closes: https://lore.kernel.org/lkml/a0d10d50-2720-4ecd-a2c6-c2c5e5aeee65@roeck-us.net/ Tested-by: Guenter Roeck <linux@roeck-us.net> Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Closes: https://lore.kernel.org/r/CAMuHMdX_g1tbiUL9PUQdqaegrEzCNN3GtbSvSBFYAL4TzvstFg@mail.gmail.com Closes: https://lore.kernel.org/r/CAMuHMdW6N40+0gGQ+LSrN64Mo4A0-ELAm0pR3gWQ0mNanyBuUQ@mail.gmail.com Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Link: https://lore.kernel.org/all/a4bf4063-194f-4740-9c1d-88f9ab38b778@roeck-us.net Signed-off-by: Kees Cook <keescook@chromium.org> |
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|
Kees Cook
|
3d965b33e4 |
fortify: Improve buffer overflow reporting
Improve the reporting of buffer overflows under CONFIG_FORTIFY_SOURCE to help accelerate debugging efforts. The calculations are all just sitting in registers anyway, so pass them along to the function to be reported. For example, before: detected buffer overflow in memcpy and after: memcpy: detected buffer overflow: 4096 byte read of buffer size 1 Link: https://lore.kernel.org/r/20230407192717.636137-10-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> |
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|
Kees Cook
|
fa4a3f86d4 |
fortify: Add KUnit tests for runtime overflows
With fortify overflows able to be redirected, we can use KUnit to exercise the overflow conditions. Add tests for every API covered by CONFIG_FORTIFY_SOURCE, except for memset() and memcpy(), which are special-cased for now. Disable warnings in the Makefile since we're explicitly testing known-bad string handling code patterns. Note that this makes the LKDTM FORTIFY_STR* tests obsolete, but those can be removed separately. Signed-off-by: Kees Cook <keescook@chromium.org> |
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|
Kees Cook
|
4ce615e798 |
fortify: Provide KUnit counters for failure testing
The standard C string APIs were not designed to have a failure mode; they were expected to always succeed without memory safety issues. Normally, CONFIG_FORTIFY_SOURCE will use fortify_panic() to stop processing, as truncating a read or write may provide an even worse system state. However, this creates a problem for testing under things like KUnit, which needs a way to survive failures. When building with CONFIG_KUNIT, provide a failure path for all users of fortify_panic, and track whether the failure was a read overflow or a write overflow, for KUnit tests to examine. Inspired by similar logic in the slab tests. Signed-off-by: Kees Cook <keescook@chromium.org> |
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|
Kees Cook
|
1a78f8cb5d |
fortify: Allow KUnit test to build without FORTIFY
In order for CI systems to notice all the skipped tests related to CONFIG_FORTIFY_SOURCE, allow the FORTIFY_SOURCE KUnit tests to build with or without CONFIG_FORTIFY_SOURCE. Signed-off-by: Kees Cook <keescook@chromium.org> |
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|
Kees Cook
|
475ddf1fce |
fortify: Split reporting and avoid passing string pointer
In preparation for KUnit testing and further improvements in fortify failure reporting, split out the report and encode the function and access failure (read or write overflow) into a single u8 argument. This mainly ends up saving a tiny bit of space in the data segment. For a defconfig with FORTIFY_SOURCE enabled: $ size gcc/vmlinux.before gcc/vmlinux.after text data bss dec hex filename 26132309 9760658 2195460 38088427 2452eeb gcc/vmlinux.before 26132386 9748382 2195460 38076228 244ff44 gcc/vmlinux.after Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com> Signed-off-by: Kees Cook <keescook@chromium.org> |
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|
Kees Cook
|
08d45ee84b |
overflow: Introduce wrapping_assign_add() and wrapping_assign_sub()
This allows replacements of the idioms "var += offset" and "var -= offset" with the wrapping_assign_add() and wrapping_assign_sub() helpers respectively. They will avoid wrap-around sanitizer instrumentation. Add to the selftests to validate behavior and lack of side-effects. Reviewed-by: Marco Elver <elver@google.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Kees Cook <keescook@chromium.org> |
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|
Kees Cook
|
d70de8054c |
overflow: Introduce wrapping_add(), wrapping_sub(), and wrapping_mul()
Provide helpers that will perform wrapping addition, subtraction, or multiplication without tripping the arithmetic wrap-around sanitizers. The first argument is the type under which the wrap-around should happen with. In other words, these two calls will get very different results: wrapping_mul(int, 50, 50) == 2500 wrapping_mul(u8, 50, 50) == 196 Add to the selftests to validate behavior and lack of side-effects. Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by: Marco Elver <elver@google.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Kees Cook <keescook@chromium.org> |
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|
Linus Torvalds
|
87adedeba5 |
Including fixes from bluetooth, WiFi and netfilter.
We have one outstanding issue with the stmmac driver, which may
be a LOCKDEP false positive, not a blocker.
Current release - regressions:
- netfilter: nf_tables: re-allow NFPROTO_INET in
nft_(match/target)_validate()
- eth: ionic: fix error handling in PCI reset code
Current release - new code bugs:
- eth: stmmac: complete meta data only when enabled, fix null-deref
- kunit: fix again checksum tests on big endian CPUs
Previous releases - regressions:
- veth: try harder when allocating queue memory
- Bluetooth:
- hci_bcm4377: do not mark valid bd_addr as invalid
- hci_event: fix handling of HCI_EV_IO_CAPA_REQUEST
Previous releases - always broken:
- info leak in __skb_datagram_iter() on netlink socket
- mptcp:
- map v4 address to v6 when destroying subflow
- fix potential wake-up event loss due to sndbuf auto-tuning
- fix double-free on socket dismantle
- wifi: nl80211: reject iftype change with mesh ID change
- fix small out-of-bound read when validating netlink be16/32 types
- rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back
- ipv6: fix potential "struct net" ref-leak in inet6_rtm_getaddr()
- ip_tunnel: prevent perpetual headroom growth with huge number of
tunnels on top of each other
- mctp: fix skb leaks on error paths of mctp_local_output()
- eth: ice: fixes for DPLL state reporting
- dpll: rely on rcu for netdev_dpll_pin() to prevent UaF
- eth: dpaa: accept phy-interface-type = "10gbase-r" in the device tree
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from bluetooth, WiFi and netfilter.
We have one outstanding issue with the stmmac driver, which may be a
LOCKDEP false positive, not a blocker.
Current release - regressions:
- netfilter: nf_tables: re-allow NFPROTO_INET in
nft_(match/target)_validate()
- eth: ionic: fix error handling in PCI reset code
Current release - new code bugs:
- eth: stmmac: complete meta data only when enabled, fix null-deref
- kunit: fix again checksum tests on big endian CPUs
Previous releases - regressions:
- veth: try harder when allocating queue memory
- Bluetooth:
- hci_bcm4377: do not mark valid bd_addr as invalid
- hci_event: fix handling of HCI_EV_IO_CAPA_REQUEST
Previous releases - always broken:
- info leak in __skb_datagram_iter() on netlink socket
- mptcp:
- map v4 address to v6 when destroying subflow
- fix potential wake-up event loss due to sndbuf auto-tuning
- fix double-free on socket dismantle
- wifi: nl80211: reject iftype change with mesh ID change
- fix small out-of-bound read when validating netlink be16/32 types
- rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back
- ipv6: fix potential "struct net" ref-leak in inet6_rtm_getaddr()
- ip_tunnel: prevent perpetual headroom growth with huge number of
tunnels on top of each other
- mctp: fix skb leaks on error paths of mctp_local_output()
- eth: ice: fixes for DPLL state reporting
- dpll: rely on rcu for netdev_dpll_pin() to prevent UaF
- eth: dpaa: accept phy-interface-type = '10gbase-r' in the device
tree"
* tag 'net-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (73 commits)
dpll: fix build failure due to rcu_dereference_check() on unknown type
kunit: Fix again checksum tests on big endian CPUs
tls: fix use-after-free on failed backlog decryption
tls: separate no-async decryption request handling from async
tls: fix peeking with sync+async decryption
tls: decrement decrypt_pending if no async completion will be called
gtp: fix use-after-free and null-ptr-deref in gtp_newlink()
net: hsr: Use correct offset for HSR TLV values in supervisory HSR frames
igb: extend PTP timestamp adjustments to i211
rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back
tools: ynl: fix handling of multiple mcast groups
selftests: netfilter: add bridge conntrack + multicast test case
netfilter: bridge: confirm multicast packets before passing them up the stack
netfilter: nf_tables: allow NFPROTO_INET in nft_(match/target)_validate()
Bluetooth: qca: Fix triggering coredump implementation
Bluetooth: hci_qca: Set BDA quirk bit if fwnode exists in DT
Bluetooth: qca: Fix wrong event type for patch config command
Bluetooth: Enforce validation on max value of connection interval
Bluetooth: hci_event: Fix handling of HCI_EV_IO_CAPA_REQUEST
Bluetooth: mgmt: Fix limited discoverable off timeout
...
|
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Christophe Leroy
|
3d6423ef8d |
kunit: Fix again checksum tests on big endian CPUs
Commit |
||
|
Waiman Long
|
f22f71322a |
locking/rwsem: Make DEBUG_RWSEMS and PREEMPT_RT mutually exclusive
The debugging code enabled by CONFIG_DEBUG_RWSEMS=y will only be compiled in when CONFIG_PREEMPT_RT isn't set. There is no point to allow CONFIG_DEBUG_RWSEMS to be set in a kernel configuration where CONFIG_PREEMPT_RT is also set. Make them mutually exclusive. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Boqun Feng <boqun.feng@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20240222150540.79981-5-longman@redhat.com |
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|
David Gow
|
0a549ed22c |
lib: memcpy_kunit: Fix an invalid format specifier in an assertion msg
The 'i' passed as an assertion message is a size_t, so should use '%zu',
not '%d'.
This was found by annotating the _MSG() variants of KUnit's assertions
to let gcc validate the format strings.
Fixes:
|
||
|
David Gow
|
d2733a026f |
lib/cmdline: Fix an invalid format specifier in an assertion msg
The correct format specifier for p - n (both p and n are pointers) is
%td, as the type should be ptrdiff_t.
This was discovered by annotating KUnit assertion macros with gcc's
printf specifier, but note that gcc incorrectly suggested a %d or %ld
specifier (depending on the pointer size of the architecture being
built).
Fixes:
|
||
|
David Gow
|
6f2f793fba |
kunit: test: Log the correct filter string in executor_test
KUnit's executor_test logs the filter string in KUNIT_ASSERT_EQ_MSG(),
but passed a random character from the filter, rather than the whole
string.
This was found by annotating KUNIT_ASSERT_EQ_MSG() to let gcc validate
the format string.
Fixes:
|
||
|
Maxime Ripard
|
c5215d54dc |
kunit: Setup DMA masks on the kunit device
Commit |
||
|
Ricardo B. Marliere
|
2fadeb950f |
kunit: make kunit_bus_type const
Since commit
|
||
|
Lucas De Marchi
|
a0dd82d6d8 |
kunit: Mark filter* params as rw
By allowing the filter_glob parameter to be written to, it's possible to tweak the testsuites that will be executed on new module loads. This makes it easier to run specific tests without having to reload kunit and provides a way to filter tests on real HW even if kunit is builtin. Example for xe driver: 1) Run just 1 test # echo -n xe_bo > /sys/module/kunit/parameters/filter_glob # modprobe -r xe_live_test # modprobe xe_live_test # ls /sys/kernel/debug/kunit/ xe_bo 2) Run all tests # echo \* > /sys/module/kunit/parameters/filter_glob # modprobe -r xe_live_test # modprobe xe_live_test # ls /sys/kernel/debug/kunit/ xe_bo xe_dma_buf xe_migrate xe_mocs For completeness and to cover other use cases, also change filter and filter_action to rw. Link: https://lore.kernel.org/intel-xe/dzacvbdditbneiu3e3fmstjmttcbne44yspumpkd6sjn56jqpk@vxu7sksbqrp6/ Reviewed-by: Rae Moar <rmoar@google.com> Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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|
Greg Kroah-Hartman
|
13a44ba0dc |
Merge 6.8-rc6 into tty-next
We need the tty/serial fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Baoquan He
|
443cbaf9e2 |
crash: split vmcoreinfo exporting code out from crash_core.c
Now move the relevant codes into separate files:
kernel/crash_reserve.c, include/linux/crash_reserve.h.
And add config item CRASH_RESERVE to control its enabling.
And also update the old ifdeffery of CONFIG_CRASH_CORE, including of
<linux/crash_core.h> and config item dependency on CRASH_CORE
accordingly.
And also do renaming as follows:
- arch/xxx/kernel/{crash_core.c => vmcore_info.c}
because they are only related to vmcoreinfo exporting on x86, arm64,
riscv.
And also Remove config item CRASH_CORE, and rely on CONFIG_KEXEC_CORE to
decide if build in crash_core.c.
[yang.lee@linux.alibaba.com: remove duplicated include in vmcore_info.c]
Link: https://lkml.kernel.org/r/20240126005744.16561-1-yang.lee@linux.alibaba.com
Link: https://lkml.kernel.org/r/20240124051254.67105-3-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Acked-by: Hari Bathini <hbathini@linux.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Pingfan Liu <piliu@redhat.com>
Cc: Klara Modin <klarasmodin@gmail.com>
Cc: Michael Kelley <mhklinux@outlook.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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Oscar Salvador
|
4bedfb314b |
mm,page_owner: maintain own list of stack_records structs
page_owner needs to increment a stack_record refcount when a new allocation occurs, and decrement it on a free operation. In order to do that, we need to have a way to get a stack_record from a handle. Implement __stack_depot_get_stack_record() which just does that, and make it public so page_owner can use it. Also, traversing all stackdepot buckets comes with its own complexity, plus we would have to implement a way to mark only those stack_records that were originated from page_owner, as those are the ones we are interested in. For that reason, page_owner maintains its own list of stack_records, because traversing that list is faster than traversing all buckets while keeping at the same time a low complexity. For now, add to stack_list only the stack_records of dummy_handle and failure_handle, and set their refcount of 1. Further patches will add code to increment or decrement stack_records count on allocation and free operation. Link: https://lkml.kernel.org/r/20240215215907.20121-4-osalvador@suse.de Signed-off-by: Oscar Salvador <osalvador@suse.de> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Marco Elver <elver@google.com> Acked-by: Andrey Konovalov <andreyknvl@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Oscar Salvador
|
8151c7a35d |
lib/stackdepot: move stack_record struct definition into the header
In order to move the heavy lifting into page_owner code, this one needs to have access to the stack_record structure, which right now sits in lib/stackdepot.c. Move it to the stackdepot.h header so page_owner can access stack_record's struct fields. Link: https://lkml.kernel.org/r/20240215215907.20121-3-osalvador@suse.de Signed-off-by: Oscar Salvador <osalvador@suse.de> Reviewed-by: Marco Elver <elver@google.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Andrey Konovalov <andreyknvl@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Oscar Salvador
|
3ee34eabac |
lib/stackdepot: fix first entry having a 0-handle
Patch series "page_owner: print stacks and their outstanding allocations",
v10.
page_owner is a great debug functionality tool that lets us know about all
pages that have been allocated/freed and their specific stacktrace. This
comes very handy when debugging memory leaks, since with some scripting we
can see the outstanding allocations, which might point to a memory leak.
In my experience, that is one of the most useful cases, but it can get
really tedious to screen through all pages and try to reconstruct the
stack <-> allocated/freed relationship, becoming most of the time a
daunting and slow process when we have tons of allocation/free operations.
This patchset aims to ease that by adding a new functionality into
page_owner. This functionality creates a new directory called
'page_owner_stacks' under 'sys/kernel//debug' with a read-only file called
'show_stacks', which prints out all the stacks followed by their
outstanding number of allocations (being that the times the stacktrace has
allocated but not freed yet). This gives us a clear and a quick overview
of stacks <-> allocated/free.
We take advantage of the new refcount_f field that stack_record struct
gained, and increment/decrement the stack refcount on every
__set_page_owner() (alloc operation) and __reset_page_owner (free
operation) call.
Unfortunately, we cannot use the new stackdepot api STACK_DEPOT_FLAG_GET
because it does not fulfill page_owner needs, meaning we would have to
special case things, at which point makes more sense for page_owner to do
its own {dec,inc}rementing of the stacks. E.g: Using
STACK_DEPOT_FLAG_PUT, once the refcount reaches 0, such stack gets
evicted, so page_owner would lose information.
This patchset also creates a new file called 'set_threshold' within
'page_owner_stacks' directory, and by writing a value to it, the stacks
which refcount is below such value will be filtered out.
A PoC can be found below:
# cat /sys/kernel/debug/page_owner_stacks/show_stacks > page_owner_full_stacks.txt
# head -40 page_owner_full_stacks.txt
prep_new_page+0xa9/0x120
get_page_from_freelist+0x801/0x2210
__alloc_pages+0x18b/0x350
alloc_pages_mpol+0x91/0x1f0
folio_alloc+0x14/0x50
filemap_alloc_folio+0xb2/0x100
page_cache_ra_unbounded+0x96/0x180
filemap_get_pages+0xfd/0x590
filemap_read+0xcc/0x330
blkdev_read_iter+0xb8/0x150
vfs_read+0x285/0x320
ksys_read+0xa5/0xe0
do_syscall_64+0x80/0x160
entry_SYSCALL_64_after_hwframe+0x6e/0x76
stack_count: 521
prep_new_page+0xa9/0x120
get_page_from_freelist+0x801/0x2210
__alloc_pages+0x18b/0x350
alloc_pages_mpol+0x91/0x1f0
folio_alloc+0x14/0x50
filemap_alloc_folio+0xb2/0x100
__filemap_get_folio+0x14a/0x490
ext4_write_begin+0xbd/0x4b0 [ext4]
generic_perform_write+0xc1/0x1e0
ext4_buffered_write_iter+0x68/0xe0 [ext4]
ext4_file_write_iter+0x70/0x740 [ext4]
vfs_write+0x33d/0x420
ksys_write+0xa5/0xe0
do_syscall_64+0x80/0x160
entry_SYSCALL_64_after_hwframe+0x6e/0x76
stack_count: 4609
...
...
# echo 5000 > /sys/kernel/debug/page_owner_stacks/set_threshold
# cat /sys/kernel/debug/page_owner_stacks/show_stacks > page_owner_full_stacks_5000.txt
# head -40 page_owner_full_stacks_5000.txt
prep_new_page+0xa9/0x120
get_page_from_freelist+0x801/0x2210
__alloc_pages+0x18b/0x350
alloc_pages_mpol+0x91/0x1f0
folio_alloc+0x14/0x50
filemap_alloc_folio+0xb2/0x100
__filemap_get_folio+0x14a/0x490
ext4_write_begin+0xbd/0x4b0 [ext4]
generic_perform_write+0xc1/0x1e0
ext4_buffered_write_iter+0x68/0xe0 [ext4]
ext4_file_write_iter+0x70/0x740 [ext4]
vfs_write+0x33d/0x420
ksys_pwrite64+0x75/0x90
do_syscall_64+0x80/0x160
entry_SYSCALL_64_after_hwframe+0x6e/0x76
stack_count: 6781
prep_new_page+0xa9/0x120
get_page_from_freelist+0x801/0x2210
__alloc_pages+0x18b/0x350
pcpu_populate_chunk+0xec/0x350
pcpu_balance_workfn+0x2d1/0x4a0
process_scheduled_works+0x84/0x380
worker_thread+0x12a/0x2a0
kthread+0xe3/0x110
ret_from_fork+0x30/0x50
ret_from_fork_asm+0x1b/0x30
stack_count: 8641
This patch (of 7):
The very first entry of stack_record gets a handle of 0, but this is wrong
because stackdepot treats a 0-handle as a non-valid one. E.g: See the
check in stack_depot_fetch()
Fix this by adding and offset of 1.
This bug has been lurking since the very beginning of stackdepot, but no
one really cared as it seems. Because of that I am not adding a Fixes
tag.
Link: https://lkml.kernel.org/r/20240215215907.20121-1-osalvador@suse.de
Link: https://lkml.kernel.org/r/20240215215907.20121-2-osalvador@suse.de
Co-developed-by: Marco Elver <elver@google.com>
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Andrew Morton
|
1f1183c4c0 | merge mm-hotfixes-stable into mm-nonmm-stable to pick up stackdepot changes | ||
|
Marco Elver
|
31639fd6ce |
stackdepot: use variable size records for non-evictable entries
With the introduction of stack depot evictions, each stack record is now
fixed size, so that future reuse after an eviction can safely store
differently sized stack traces. In all cases that do not make use of
evictions, this wastes lots of space.
Fix it by re-introducing variable size stack records (up to the max
allowed size) for entries that will never be evicted. We know if an entry
will never be evicted if the flag STACK_DEPOT_FLAG_GET is not provided,
since a later stack_depot_put() attempt is undefined behavior.
With my current kernel config that enables KASAN and also SLUB owner
tracking, I observe (after a kernel boot) a whopping reduction of 296
stack depot pools, which translates into 4736 KiB saved. The savings here
are from SLUB owner tracking only, because KASAN generic mode still uses
refcounting.
Before:
pools: 893
allocations: 29841
frees: 6524
in_use: 23317
freelist_size: 3454
After:
pools: 597
refcounted_allocations: 17547
refcounted_frees: 6477
refcounted_in_use: 11070
freelist_size: 3497
persistent_count: 12163
persistent_bytes: 1717008
[elver@google.com: fix -Wstringop-overflow warning]
Link: https://lore.kernel.org/all/20240201135747.18eca98e@canb.auug.org.au/
Link: https://lkml.kernel.org/r/20240201090434.1762340-1-elver@google.com
Link: https://lore.kernel.org/all/CABXGCsOzpRPZGg23QqJAzKnqkZPKzvieeg=W7sgjgi3q0pBo0g@mail.gmail.com/
Link: https://lkml.kernel.org/r/20240129100708.39460-1-elver@google.com
Link: https://lore.kernel.org/all/CABXGCsOzpRPZGg23QqJAzKnqkZPKzvieeg=W7sgjgi3q0pBo0g@mail.gmail.com/
Fixes:
|
||
|
Florian Westphal
|
9a0d18853c |
netlink: add nla be16/32 types to minlen array
BUG: KMSAN: uninit-value in nla_validate_range_unsigned lib/nlattr.c:222 [inline]
BUG: KMSAN: uninit-value in nla_validate_int_range lib/nlattr.c:336 [inline]
BUG: KMSAN: uninit-value in validate_nla lib/nlattr.c:575 [inline]
BUG: KMSAN: uninit-value in __nla_validate_parse+0x2e20/0x45c0 lib/nlattr.c:631
nla_validate_range_unsigned lib/nlattr.c:222 [inline]
nla_validate_int_range lib/nlattr.c:336 [inline]
validate_nla lib/nlattr.c:575 [inline]
...
The message in question matches this policy:
[NFTA_TARGET_REV] = NLA_POLICY_MAX(NLA_BE32, 255),
but because NLA_BE32 size in minlen array is 0, the validation
code will read past the malformed (too small) attribute.
Note: Other attributes, e.g. BITFIELD32, SINT, UINT.. are also missing:
those likely should be added too.
Reported-by: syzbot+3f497b07aa3baf2fb4d0@syzkaller.appspotmail.com
Reported-by: xingwei lee <xrivendell7@gmail.com>
Closes: https://lore.kernel.org/all/CABOYnLzFYHSnvTyS6zGa-udNX55+izqkOt2sB9WDqUcEGW6n8w@mail.gmail.com/raw
Fixes:
|
||
|
Nathan Chancellor
|
9feceff1d2 |
lib/Kconfig.debug: update Clang version check in CONFIG_KCOV
Now that the minimum supported version of LLVM for building the kernel has been bumped to 13.0.1, this condition can be changed to just CONFIG_CC_IS_CLANG, as the build will fail during the configuration stage for older LLVM versions. Link: https://lkml.kernel.org/r/20240125-bump-min-llvm-ver-to-13-0-1-v1-10-f5ff9bda41c5@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: "Aneesh Kumar K.V (IBM)" <aneesh.kumar@kernel.org> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Borislav Petkov (AMD) <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Conor Dooley <conor@kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Geert Uytterhoeven
|
f785785c0a |
lib: dhry: add missing closing parenthesis
The help text for the Dhrystone benchmark test lacks a matching closing parenthesis. Link: https://lkml.kernel.org/r/772b43271bcb3dd17a6aae671b2084f08c05b079.1705934853.git.geert+renesas@glider.be Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Geert Uytterhoeven
|
b8d1b82837 |
lib: dhry: use ktime_ms_delta() helper
Use the existing ktime_ms_delta() helper instead of open-coding the same operation. Link: https://lkml.kernel.org/r/bb43c67a7580de6152f5e6eb225071166d33b6e4.1705934853.git.geert+renesas@glider.be Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Geert Uytterhoeven
|
c3c6c20482 |
lib: dhry: remove unneeded <linux/mutex.h>
Patch series "lib: dhry: miscellaneous cleanups". This patch series contains a few miscellaneous cleanups for the Dhrystone benchmark test. This patch (of 3): The Dhrystone benchmark test does not use mutexes. Link: https://lkml.kernel.org/r/cover.1705934853.git.geert+renesas@glider.be Link: https://lkml.kernel.org/r/cf8fafaedccf96143f1513745c43a457480bfc24.1705934853.git.geert+renesas@glider.be Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kemeng Shi
|
d6bbab8f35 |
flex_proportions: remove unused fprop_local_single
The single variant of flex_proportions is not used. Simply remove it. Link: https://lkml.kernel.org/r/20240118201321.759174-1-shikemeng@huaweicloud.com Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kuan-Wei Chiu
|
0e02ca29a5 |
lib/sort: optimize heapsort with double-pop variation
Instead of popping only the maximum element from the heap during each iteration, we now pop the two largest elements at once. Although this introduces an additional comparison to determine the second largest element, it enables a reduction in the height of the tree by one during the heapify operations starting from root's left/right child. This reduction in tree height by one leads to a decrease of one comparison and one swap. This optimization results in saving approximately 0.5 * n swaps without increasing the number of comparisons. Additionally, the heap size during heapify is now one less than the original size, offering a chance for further reduction in comparisons and swaps. The following experimental data is based on the array generated using get_random_u32(). | N | swaps (old) | swaps (new) | comparisons (old) | comparisons (new) | |-------|-------------|-------------|-------------------|-------------------| | 1000 | 9054 | 8569 | 10328 | 10320 | | 2000 | 20137 | 19182 | 22634 | 22587 | | 3000 | 32062 | 30623 | 35833 | 35752 | | 4000 | 44274 | 42282 | 49332 | 49306 | | 5000 | 57195 | 54676 | 63300 | 63294 | | 6000 | 70205 | 67202 | 77599 | 77557 | | 7000 | 83276 | 79831 | 92113 | 92032 | | 8000 | 96630 | 92678 | 106635 | 106617 | | 9000 | 110349 | 105883 | 121505 | 121404 | | 10000 | 124165 | 119202 | 136628 | 136617 | Link: https://lkml.kernel.org/r/20240113031352.2395118-3-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Cc: George Spelvin <lkml@sdf.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kuan-Wei Chiu
|
db946a4222 |
lib/sort: optimize heapsort for equal elements in sift-down path
Patch series "lib/sort: Optimize the number of swaps and comparisons". This patch series aims to optimize the heapsort algorithm, specifically targeting a reduction in the number of swaps and comparisons required. This patch (of 2): Currently, when searching for the sift-down path and encountering equal elements, the algorithm chooses the left child. However, considering that the height of the right subtree may be one less than that of the left subtree, selecting the right child in such cases can potentially reduce the number of comparisons and swaps. For instance, when sorting an array of 10,000 identical elements, the current implementation requires 247,209 comparisons. With this patch, the number of comparisons can be reduced to 227,241. Link: https://lkml.kernel.org/r/20240113031352.2395118-1-visitorckw@gmail.com Link: https://lkml.kernel.org/r/20240113031352.2395118-2-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Nathan Chancellor
|
2947a4567f |
treewide: update LLVM Bugzilla links
LLVM moved their issue tracker from their own Bugzilla instance to GitHub issues. While all of the links are still valid, they may not necessarily show the most up to date information around the issues, as all updates will occur on GitHub, not Bugzilla. Another complication is that the Bugzilla issue number is not always the same as the GitHub issue number. Thankfully, LLVM maintains this mapping through two shortlinks: https://llvm.org/bz<num> -> https://bugs.llvm.org/show_bug.cgi?id=<num> https://llvm.org/pr<num> -> https://github.com/llvm/llvm-project/issues/<mapped_num> Switch all "https://bugs.llvm.org/show_bug.cgi?id=<num>" links to the "https://llvm.org/pr<num>" shortlink so that the links show the most up to date information. Each migrated issue links back to the Bugzilla entry, so there should be no loss of fidelity of information here. Link: https://lkml.kernel.org/r/20240109-update-llvm-links-v1-3-eb09b59db071@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Acked-by: Fangrui Song <maskray@google.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Mykola Lysenko <mykolal@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Jakub Kicinski
|
fecc51559a |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: net/ipv4/udp.c |
||
|
Daniel Gomez
|
e777ae44e3 |
XArray: add cmpxchg order test
XArray multi-index entries do not keep track of the order stored once the entry is being marked as used with cmpxchg (conditionally replaced with NULL). Add a test to check the order is actually lost. The test also verifies the order and entries for all the tied indexes before and after the NULL replacement with xa_cmpxchg. Add another entry at 1 << order that keeps the node around and the order information for the NULL-entry after xa_cmpxchg. Link: https://lkml.kernel.org/r/20240131225125.1370598-3-mcgrof@kernel.org Signed-off-by: Daniel Gomez <da.gomez@samsung.com> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Cc: Darrick J. Wong <djwong@kernel.org> Cc: Dave Chinner <david@fromorbit.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Pankaj Raghav <p.raghav@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Luis Chamberlain
|
a60cc288a1 |
test_xarray: add tests for advanced multi-index use
Patch series "test_xarray: advanced API multi-index tests", v2. This is a respin of the test_xarray multi-index tests [0] which use and demonstrate the advanced API which is used by the page cache. This should let folks more easily follow how we use multi-index to support for example a min order later in the page cache. It also lets us grow the selftests to mimic more of what we do in the page cache. This patch (of 2): The multi index selftests are great but they don't replicate how we deal with the page cache exactly, which makes it a bit hard to follow as the page cache uses the advanced API. Add tests which use the advanced API, mimicking what we do in the page cache, while at it, extend the example to do what is needed for min order support. [mcgrof@kernel.org: fix soft lockup for advanced-api tests] Link: https://lkml.kernel.org/r/20240216194329.840555-1-mcgrof@kernel.org [akpm@linux-foundation.org: s/i/loops/, make non-static] [akpm@linux-foundation.org: restore static storage for loop counter] Link: https://lkml.kernel.org/r/20240131225125.1370598-1-mcgrof@kernel.org Link: https://lkml.kernel.org/r/20240131225125.1370598-2-mcgrof@kernel.org Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Tested-by: Daniel Gomez <da.gomez@samsung.com> Cc: Darrick J. Wong <djwong@kernel.org> Cc: Dave Chinner <david@fromorbit.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Pankaj Raghav <p.raghav@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Lukas Bulwahn
|
8689d75000 |
maple_tree: avoid duplicate variable init in mast_spanning_rebalance()
The local variables r_tmp and l_tmp in mast_spanning_rebalance() are
already initialized at its declaration; there is no need to assign the
value again.
Remove the duplicate initialization of {r,l}_tmp. No functional change.
Due to common compiler optimizations, also no change to object code.
This issue was identified with clang-analyzer's dead stores analysis.
Link: https://lkml.kernel.org/r/20240122102000.29558-1-lukas.bulwahn@gmail.com
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Christian Brauner
|
4af6ccb469
|
Merge series 'Use Maple Trees for simple_offset utilities' of https://lore.kernel.org/r/170820083431.6328.16233178852085891453.stgit@91.116.238.104.host.secureserver.net
Pull simple offset series from Chuck Lever In an effort to address slab fragmentation issues reported a few months ago, I've replaced the use of xarrays for the directory offset map in "simple" file systems (including tmpfs). Thanks to Liam Howlett for helping me get this working with Maple Trees. * series 'Use Maple Trees for simple_offset utilities' of https://lore.kernel.org/r/170820083431.6328.16233178852085891453.stgit@91.116.238.104.host.secureserver.net: (6 commits) libfs: Convert simple directory offsets to use a Maple Tree test_maple_tree: testing the cyclic allocation maple_tree: Add mtree_alloc_cyclic() libfs: Add simple_offset_empty() libfs: Define a minimum directory offset libfs: Re-arrange locking in offset_iterate_dir() Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Sidhartha Kumar
|
e755c43eb4 |
maple_tree: fix comment describing mas_node_count_gfp()
The function description comment for mas_node_count_gfp() mistakingly refers to the function as mas_node_count(). Change it to refer to the correct function. Link: https://lkml.kernel.org/r/20240109223119.162357-1-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Liam R. Howlett
|
f92e1a829d |
test_maple_tree: testing the cyclic allocation
This tests the interactions of the cyclic allocations, the maple state index and last, and overflow. Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Link: https://lore.kernel.org/r/170820144894.6328.13052830860966450674.stgit@91.116.238.104.host.secureserver.net Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Chuck Lever
|
9b6713cc75 |
maple_tree: Add mtree_alloc_cyclic()
I need a cyclic allocator for the simple_offset implementation in fs/libfs.c. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Link: https://lore.kernel.org/r/170820144179.6328.12838600511394432325.stgit@91.116.238.104.host.secureserver.net Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Kees Cook
|
e6584c3964 |
string: Allow 2-argument strscpy()
Using sizeof(dst) for the "size" argument in strscpy() is the
overwhelmingly common case. Instead of requiring this everywhere, allow a
2-argument version to be used that will use the sizeof() internally. There
are other functions in the kernel with optional arguments[1], so this
isn't unprecedented, and improves readability. Update and relocate the
kern-doc for strscpy() too, and drop __HAVE_ARCH_STRSCPY as it is unused.
Adjust ARCH=um build to notice the changed export name, as it doesn't
do full header includes for the string helpers.
This could additionally let us save a few hundred lines of code:
1177 files changed, 2455 insertions(+), 3026 deletions(-)
with a treewide cleanup using Coccinelle:
@needless_arg@
expression DST, SRC;
@@
strscpy(DST, SRC
-, sizeof(DST)
)
Link: https://elixir.bootlin.com/linux/v6.7/source/include/linux/pci.h#L1517 [1]
Reviewed-by: Justin Stitt <justinstitt@google.com>
Cc: Andy Shevchenko <andy@kernel.org>
Cc: linux-hardening@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
|
||
|
Kees Cook
|
f478898e0a |
string: Redefine strscpy_pad() as a macro
In preparation for making strscpy_pad()'s 3rd argument optional, redefine it as a macro. This also has the benefit of allowing greater FORITFY introspection, as it couldn't see into the strscpy() nor the memset() within strscpy_pad(). Cc: Andy Shevchenko <andy@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: <linux-hardening@vger.kernel.org> Reviewed-by: Justin Stitt <justinstitt@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Kees Cook
|
557f8c582a |
ubsan: Reintroduce signed overflow sanitizer
In order to mitigate unexpected signed wrap-around[1], bring back the
signed integer overflow sanitizer. It was removed in commit
|
||
|
Guenter Roeck
|
1eb1e98437 |
lib/Kconfig.debug: TEST_IOV_ITER depends on MMU
Trying to run the iov_iter unit test on a nommu system such as the qemu
kc705-nommu emulation results in a crash.
KTAP version 1
# Subtest: iov_iter
# module: kunit_iov_iter
1..9
BUG: failure at mm/nommu.c:318/vmap()!
Kernel panic - not syncing: BUG!
The test calls vmap() directly, but vmap() is not supported on nommu
systems, causing the crash. TEST_IOV_ITER therefore needs to depend on
MMU.
Link: https://lkml.kernel.org/r/20240208153010.1439753-1-linux@roeck-us.net
Fixes:
|
||
|
Masahiro Yamada
|
cd14b01846 |
treewide: replace or remove redundant def_bool in Kconfig files
'def_bool X' is a shorthand for 'bool' plus 'default X'. 'def_bool' is redundant where 'bool' is already present, so 'def_bool X' can be replaced with 'default X', or removed if X is 'n'. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> |
||
|
Greg Kroah-Hartman
|
36d97cdaf4 |
Merge 6.8-rc5 into tty-next
We need the serial/tty fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Greg Kroah-Hartman
|
07749061b8 |
Linux 6.8-rc5
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmXSbvkeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGi3kH/iM5AcKeQfee07to TJP3WORLBt5UrUMgAQbJdNAruCj6brHA6YnZ6AjdhdNZ41RO06h69kTpb+y/CYJz +ogGK5qhWsC8ETM6rJCioo8uI4GU70p84fGiMfLw8o6vUvmtyI5qH3531Y30Edxt qqMVtQrVe9J5JcHQjJ/mQo8nAuvZdQQGM90zLGqFP+JheP3CzsCokraIITqoebDC PCVAsnSbXT/uMjwSr03kdnMnnY++fxz/TyHb/QRMPq/4xU8nz0Z2hlOOYrVkOINu lkIYtCDGTk0QR3hdDiO9yt+k1OsWi+oBkrhjAQmAk9x3riiXq1NKvZZLDArt7PH5 gSyo9sE= =h5Ei -----END PGP SIGNATURE----- Merge 6.8-rc5 into driver-core-next We need the driver core changes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Linus Torvalds
|
ced5905231 |
Driver core fixes for 6.8-rc5
Here are some driver core fixes, a kobject fix, and a documentation
update for 6.8-rc5. In detail these changes are:
- devlink fixes for reported issues with 6.8-rc1
- topology scheduling regression fix that has been reported by many
- kobject loosening of checks change in -rc1 is now reverted as some
codepaths seemed to need the checks
- documentation update for the CVE process. Has been reviewed by
many, the last minute change to the document was to bring the .rst
format back into the the new style rules, the contents did not
change.
All of these, except for the documentation update, have been in
linux-next for over a week. The documentation update has been reviewed
for weeks by a group of developers, and in public for a week and the
wording has stabilized for now. If future changes are needed, we can do
so before 6.8-final is out (or anytime after that.)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
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Merge tag 'driver-core-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are some driver core fixes, a kobject fix, and a documentation
update for 6.8-rc5. In detail these changes are:
- devlink fixes for reported issues with 6.8-rc1
- topology scheduling regression fix that has been reported by many
- kobject loosening of checks change in -rc1 is now reverted as some
codepaths seemed to need the checks
- documentation update for the CVE process. Has been reviewed by
many, the last minute change to the document was to bring the .rst
format back into the the new style rules, the contents did not
change.
All of these, except for the documentation update, have been in
linux-next for over a week. The documentation update has been reviewed
for weeks by a group of developers, and in public for a week and the
wording has stabilized for now. If future changes are needed, we can
do so before 6.8-final is out (or anytime after that)"
* tag 'driver-core-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
Documentation: Document the Linux Kernel CVE process
Revert "kobject: Remove redundant checks for whether ktype is NULL"
driver core: fw_devlink: Improve logs for cycle detection
driver core: fw_devlink: Improve detection of overlapping cycles
driver core: Fix device_link_flag_is_sync_state_only()
topology: Set capacity_freq_ref in all cases
|
||
|
Eric Dumazet
|
5c0941c55e |
kobject: reduce uevent_sock_mutex scope
This is a followup of commit
|
||
|
Eric Dumazet
|
2444a80c1c |
kobject: make uevent_seqnum atomic
We will soon no longer acquire uevent_sock_mutex for most kobject_uevent_net_broadcast() calls, and also while calling uevent_net_broadcast(). Make uevent_seqnum an atomic64_t to get its own protection. This fixes a race while reading /sys/kernel/uevent_seqnum. Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Christian Brauner <brauner@kernel.org> Reviewed-by: Christian Brauner <brauner@kernel.org> Link: https://lore.kernel.org/r/20240214084829.684541-2-edumazet@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Linus Torvalds
|
4b6f7c624e |
Tracing fixes for v6.8:
- Fix the #ifndef that didn't have CONFIG_ on HAVE_DYNAMIC_FTRACE_WITH_REGS The fix to have dynamic trampolines work with x86 broke arm64 as the config used in the #ifdef was HAVE_DYNAMIC_FTRACE_WITH_REGS and not CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS which removed the fix that the previous fix was to fix. - Fix tracing_on state The code to test if "tracing_on" is set used ring_buffer_record_is_on() which returns false if the ring buffer isn't able to be written to. But the ring buffer disable has several bits that disable it. One is internal disabling which is used for resizing and other modifications of the ring buffer. But the "tracing_on" user space visible flag should only report if tracing is actually on and not internally disabled, as this can cause confusion as writing "1" when it is disabled will not enable it. Instead use ring_buffer_record_is_set_on() which shows the user space visible settings. - Fix a false positive kmemleak on saved cmdlines Now that the saved_cmdlines structure is allocated via alloc_page() and not via kmalloc() it has become invisible to kmemleak. The allocation done to one of its pointers was flagged as a dangling allocation leak. Make kmemleak aware of this allocation and free. - Fix synthetic event dynamic strings. A update that cleaned up the synthetic event code removed the return value of trace_string(), and had it return zero instead of the length, causing dynamic strings in the synthetic event to always have zero size. - Clean up documentation and header files for seq_buf -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZc92CxQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qiD6AQCCtF9hBWq7slLlBQ+k07hWXOi1h4nR Ae6UmoGlu3u4ugEA6/g8mO2vjABagnK7RSk/R+s1SvSGqWkmAsWeEKirEAY= =Eqjs -----END PGP SIGNATURE----- Merge tag 'trace-v6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing fixes from Steven Rostedt: - Fix the #ifndef that didn't have the 'CONFIG_' prefix on HAVE_DYNAMIC_FTRACE_WITH_REGS The fix to have dynamic trampolines work with x86 broke arm64 as the config used in the #ifdef was HAVE_DYNAMIC_FTRACE_WITH_REGS and not CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS which removed the fix that the previous fix was to fix. - Fix tracing_on state The code to test if "tracing_on" is set incorrectly used ring_buffer_record_is_on() which returns false if the ring buffer isn't able to be written to. But the ring buffer disable has several bits that disable it. One is internal disabling which is used for resizing and other modifications of the ring buffer. But the "tracing_on" user space visible flag should only report if tracing is actually on and not internally disabled, as this can cause confusion as writing "1" when it is disabled will not enable it. Instead use ring_buffer_record_is_set_on() which shows the user space visible settings. - Fix a false positive kmemleak on saved cmdlines Now that the saved_cmdlines structure is allocated via alloc_page() and not via kmalloc() it has become invisible to kmemleak. The allocation done to one of its pointers was flagged as a dangling allocation leak. Make kmemleak aware of this allocation and free. - Fix synthetic event dynamic strings An update that cleaned up the synthetic event code removed the return value of trace_string(), and had it return zero instead of the length, causing dynamic strings in the synthetic event to always have zero size. - Clean up documentation and header files for seq_buf * tag 'trace-v6.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: seq_buf: Fix kernel documentation seq_buf: Don't use "proxy" headers tracing/synthetic: Fix trace_string() return value tracing: Inform kmemleak of saved_cmdlines allocation tracing: Use ring_buffer_record_is_set_on() in tracer_tracing_is_on() tracing: Fix HAVE_DYNAMIC_FTRACE_WITH_REGS ifdef |
||
|
Heiko Carstens
|
c8dde11df1 |
s390/raid6: convert to use standard fpu_*() inline assemblies
Move the s390 specific raid6 inline assemblies, make them generic, and reuse them to implement the raid6 gen/xor implementation. Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
||
|
Heiko Carstens
|
066c40918b |
s390/fpu: decrease stack usage for some cases
The kernel_fpu structure has a quite large size of 520 bytes. In order to reduce stack footprint introduce several kernel fpu structures with different and also smaller sizes. This way every kernel fpu user must use the correct variant. A compile time check verifies that the correct variant is used. There are several users which use only 16 instead of all 32 vector registers. For those users the new kernel_fpu_16 structure with a size of only 266 bytes can be used. Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
||
|
Heiko Carstens
|
fd2527f209 |
s390/fpu: move, rename, and merge header files
Move, rename, and merge the fpu and vx header files. This way fpu header files have a consistent naming scheme (fpu*.h). Also get rid of the fpu subdirectory and move header files to asm directory, so that all fpu and vx header files can be found at the same location. Merge internal.h header file into other header files, since the internal helpers are used at many locations. so those helper functions are really not internal. Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
||
|
Jakub Kicinski
|
73be9a3aab |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts. Adjacent changes: net/core/dev.c |
||
|
Andy Shevchenko
|
6efe4d1879 |
seq_buf: Fix kernel documentation
There are plenty of issues with the kernel documentation here: - misspelled word "sequence" - different style of returned value descriptions - missed Return sections - unaligned style of ASCII / NUL-terminated / etc - wrong function references Fix all these. Link: https://lkml.kernel.org/r/20240215152506.598340-1-andriy.shevchenko@linux.intel.com Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Andy Shevchenko
|
8a566f9410 |
seq_buf: Don't use "proxy" headers
Update header inclusions to follow IWYU (Include What You Use) principle. Link: https://lkml.kernel.org/r/20240215142255.400264-1-andriy.shevchenko@linux.intel.com Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Linus Torvalds
|
91f842ffe6 |
linux_kselftest-kunit-fixes-6.8-rc5
This KUnit update for Linux 6.8-rc5 consists of one important fix to unregister kunit_bus when KUnit module is unloaded. Not doing so causes an error when KUnit module tries to re-register the bus when it gets reloaded. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmXMAnoACgkQCwJExA0N Qxy7UA//bP1Igj6osQfBjpR+RRyI3x069Z6zFRKmMglsyXnG2OTmTECGFTKbXPWf TX6UVc6iwcYTZzu2n/Xn7+smS4x3kUzYYUUhwtQzgm8Cape/XpQV3s32rYFO7XVs KH1QpB38wHibW+8YiBuluAfNTsjEYqlhVGIBPfmsG9jP+sm7y+yFiIu4Eo/JwCTa 0KM4s+OFMcvC13RegOvK/mvBqqhcM7U3lMWQhRjLEXi0OjO65S4prTpM0NMO56Ar d8KNX718BvDY9MyihwioFE4VEIMIBNeqbzx1nbCFu7cUSS0n+VWK+41CeJBuYitm ub/meRILtAHbV9+9SY1REqIIrsWSC7v/+fbG05YOnTIMfVV1Ye1XvBZoJLAmiAGz VR1JbDbuk9xfwKU48NIS8CqH7VJjM74Rl3GJh0Meyn833BYHIfVHkRlLjBbiNDG5 qac0XyH3vRHvp4Ud3PAmLa8e3QDo5HIHDkvBag4XOrzKdHpcBAGghrNWbGbipaKI 7BTyvWu5c5riVo1GN81JqT1jsZF8Dld/QaS0mcvFHy5ORfCrLi2RTpYPJIRzv++a gUjAllyH/pqwHhB/Jj9Khi8OSv8/3jMIpMS3QE/ADwFfNslGWW63kycKeDuE9Jps gCVu9DHmm18OtLiYM+nSNjyWN1pvRvCV7uo8Atucbw4bBDFwZY8= =bDqz -----END PGP SIGNATURE----- Merge tag 'linux_kselftest-kunit-fixes-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull KUnit fix from Shuah Khan: "One important fix to unregister kunit_bus when KUnit module is unloaded. Not doing so causes an error when KUnit module tries to re-register the bus when it gets reloaded" * tag 'linux_kselftest-kunit-fixes-6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: device: Unregister the kunit_bus on shutdown |
||
|
Philipp Stanner
|
acc2364fe6 |
PCI: Move PCI-specific devres code to drivers/pci/
The pcim_*() functions in lib/devres.c are guarded by an #ifdef CONFIG_PCI and, thus, don't belong to this file. They are only ever used for PCI and are not generic infrastructure. Move all pcim_*() functions in lib/devres.c to drivers/pci/devres.c. Adjust the Makefile. Add drivers/pci/devres.c to Documentation. Link: https://lore.kernel.org/r/20240131090023.12331-4-pstanner@redhat.com Suggested-by: Danilo Krummrich <dakr@redhat.com> Signed-off-by: Philipp Stanner <pstanner@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> |
||
|
Philipp Stanner
|
ae87402752 |
PCI: Move pci_iomap.c to drivers/pci/
The entirety of pci_iomap.c is guarded by an #ifdef CONFIG_PCI. It, consequently, does not belong to lib/ because it is not generic infrastructure. Move pci_iomap.c to drivers/pci/ and implement the necessary changes to Makefiles and Kconfigs. Update MAINTAINERS file. Update Documentation. Link: https://lore.kernel.org/r/20240131090023.12331-3-pstanner@redhat.com [bhelgaas: squash in https://lore.kernel.org/r/20240212150934.24559-1-pstanner@redhat.com] Suggested-by: Danilo Krummrich <dakr@redhat.com> Signed-off-by: Philipp Stanner <pstanner@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> |
||
|
Heiko Carstens
|
8d16ce1488 |
s390/fpu: make use of __uninitialized macro
Code sections in s390 specific kernel code which use floating point or vector registers all come with a 520 byte stack variable to save already in use registers, if required. With INIT_STACK_ALL_PATTERN or INIT_STACK_ALL_ZERO enabled this variable will always be initialized on function entry in addition to saving register contents, which contradicts the intention (performance improvement) of such code sections. Therefore provide a DECLARE_KERNEL_FPU_ONSTACK() macro which provides struct kernel_fpu variables with an __uninitialized attribute, and convert all existing code to use this. This way only this specific type of stack variable will not be initialized, regardless of config options. Reviewed-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20240205154844.3757121-3-hca@linux.ibm.com Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
||
|
Greg Kroah-Hartman
|
3ca8fbabcc |
Revert "kobject: Remove redundant checks for whether ktype is NULL"
This reverts commit |
||
|
John Ogness
|
7412dc6d55 |
dump_stack: Do not get cpu_sync for panic CPU
dump_stack() is called in panic(). If for some reason another CPU is holding the printk_cpu_sync and is unable to release it, the panic CPU will be unable to continue and print the stacktrace. Since non-panic CPUs are not allowed to store new printk messages anyway, there is no need to synchronize the stacktrace output in a panic situation. For the panic CPU, do not get the printk_cpu_sync because it is not needed and avoids a potential deadlock scenario in panic(). Link: https://lore.kernel.org/lkml/ZcIGKU8sxti38Kok@alley Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20240207134103.1357162-15-john.ogness@linutronix.de Signed-off-by: Petr Mladek <pmladek@suse.com> |
||
|
David Gow
|
829388b725 |
kunit: device: Unregister the kunit_bus on shutdown
If KUnit is built as a module, and it's unloaded, the kunit_bus is not
unregistered. This causes an error if it's then re-loaded later, as we
try to re-register the bus.
Unregister the bus and root_device on shutdown, if it looks valid.
In addition, be more specific about the value of kunit_bus_device. It
is:
- a valid struct device* if the kunit_bus initialised correctly.
- an ERR_PTR if it failed to initialise.
- NULL before initialisation and after shutdown.
Fixes:
|
||
|
Kees Cook
|
918327e9b7 |
ubsan: Remove CONFIG_UBSAN_SANITIZE_ALL
For simplicity in splitting out UBSan options into separate rules, remove CONFIG_UBSAN_SANITIZE_ALL, effectively defaulting to "y", which is how it is generally used anyway. (There are no ":= y" cases beyond where a specific file is enabled when a top-level ":= n" is in effect.) Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Marco Elver <elver@google.com> Cc: linux-doc@vger.kernel.org Cc: linux-kbuild@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Kees Cook
|
30edbdf9b9 |
ubsan: Silence W=1 warnings in self-test
Silence a handful of W=1 warnings in the UBSan selftest, which set
variables without using them. For example:
lib/test_ubsan.c:101:6: warning: variable 'val1' set but not used [-Wunused-but-set-variable]
101 | int val1 = 10;
| ^
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202401310423.XpCIk6KO-lkp@intel.com/
Reviewed-by: Marco Elver <elver@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
|
||
|
Breno Leitao
|
843a8851e8 |
net: blackhole_dev: fix build warning for ethh set but not used
lib/test_blackhole_dev.c sets a variable that is never read, causing
this following building warning:
lib/test_blackhole_dev.c:32:17: warning: variable 'ethh' set but not used [-Wunused-but-set-variable]
Remove the variable struct ethhdr *ethh, which is unused.
Fixes:
|
||
|
Greg Kroah-Hartman
|
a802f50d6e |
Merge 6.8-rc3 into tty-next
We need the tty/serial fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Randy Dunlap
|
157285397f |
lib/test_kmod: fix kernel-doc warnings
Fix all kernel-doc warnings in test_kmod.c:
- Mark some enum values as private so that kernel-doc is not needed
for them
- s/thread_mutex/thread_lock/ in a struct's kernel-doc comments
- add kernel-doc info for @task_sync
test_kmod.c:67: warning: Enum value '__TEST_KMOD_INVALID' not described in enum 'kmod_test_case'
test_kmod.c:67: warning: Enum value '__TEST_KMOD_MAX' not described in enum 'kmod_test_case'
test_kmod.c💯 warning: Function parameter or member 'task_sync' not described in 'kmod_test_device_info'
test_kmod.c:134: warning: Function parameter or member 'thread_mutex' not described in 'kmod_test_device'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: <linux-modules@vger.kernel.org>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
|
||
|
Kees Cook
|
bd8c239c05 |
iov_iter: Avoid wrap-around instrumentation in copy_compat_iovec_from_user()
The loop counter "i" in copy_compat_iovec_from_user() is an int, but because the nr_segs argument is unsigned long, the signed overflow sanitizer got worried "i" could wrap around. Instead of making "i" an unsigned long (which may enlarge the type size), switch both nr_segs and i to u32. There is no truncation with nr_segs since it is never larger than UIO_MAXIOV anyway. This keeps sanitizer instrumentation[1] out of a UACCESS path: vmlinux.o: warning: objtool: copy_compat_iovec_from_user+0xa9: call to __ubsan_handle_add_overflow() with UACCESS enabled Link: https://github.com/KSPP/linux/issues/26 [1] Cc: Christian Brauner <brauner@kernel.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20240129183729.work.991-kees@kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Jakub Kicinski
|
cf244463a2 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Tanzir Hasan
|
38b9baf194 |
lib/string: shrink lib/string.i via IWYU
This diff uses an open source tool include-what-you-use (IWYU) to modify the include list, changing indirect includes to direct includes. IWYU is implemented using the IWYUScripts github repository which is a tool that is currently undergoing development. These changes seek to improve build times. This change to lib/string.c resulted in a preprocessed size of lib/string.i from 26371 lines to 5321 lines (-80%) for the x86 defconfig. Link: https://github.com/ClangBuiltLinux/IWYUScripts Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Tanzir Hasan <tanzirh@google.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20231226-libstringheader-v6-2-80aa08c7652c@google.com Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Yury Norov
|
c1f5204efc |
cpumask: add cpumask_weight_andnot()
Similarly to cpumask_weight_and(), cpumask_weight_andnot() is a handy helper that may help to avoid creating an intermediate mask just to calculate number of bits that set in a 1st given mask, and clear in 2nd one. Signed-off-by: Yury Norov <yury.norov@gmail.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
|
Philipp Stanner
|
7626913652 |
pci_iounmap(): Fix MMIO mapping leak
The #ifdef ARCH_HAS_GENERIC_IOPORT_MAP accidentally also guards iounmap(),
which means MMIO mappings are leaked.
Move the guard so we call iounmap() for MMIO mappings.
Fixes:
|
||
|
Linus Torvalds
|
2a6526c4f3 |
linux_kselftest-kunit-fixes-6.8-rc3
This kunit fixes update for Linux 6.8-rc3 consists of NULL vs IS_ERR() bug fixes, documentation update, MAINTAINERS file update to add Rae Moar as a reviewer, and a fix to run test suites only after module initialization completes. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmW5dOAACgkQCwJExA0N QxwvoQ/+LoNEP+yu0C/KSWdNsDCMJizbwoCtoImETVdxxxSXOLKlh6cVtFfZTenN lLMX7zfrdIZEKIqIPVa4URq2+M9cHLuFkA8z2h5a8wOLSYxR2EyFq63o0K0NJwuC eSA7zgf/YkfEp7AKdkmefCqyn3bB3910KBlComqdtFtc/d/doZkeo2zCpJ5WXPzr x0aUGPceUa59u44JCgb1JWjQnA50ST+DYFHbfUEQJs37XfkswaseyCBKzWFAZnzR cVFHBVTZRceMrVDaXfSlXLr7FFgh/bQKF9BDTNBOEg9b1TVZmVH5sY5qnXsBTJ86 nCf4J8bIzBOvLkDFGQVRs+6edvSli5wXWfM9O8hzGEbR+xs8GOrlHitM74hyhX7z iq6QZl0FjrGfc98DKTftwO7vDKZcFd2bhpw9ZV1cO4YzYnZVRcWwWYxPO+wS7r3q b+vcypxBmBhXDxxNJaJttxTcblNrxuLY1r7oJZaroE2ioKMY3uEqIA2hLagzPp9E /q6968b2tvFQrveFT3MJwRAAIq175xBRlNcpF8UkhnGXgZMF4er/teMN8coPeK4q N//sxYobNVIJYnz6npIQB6wSobWrc0Qq4AD6YTEYkhbaXiGo3VfdrjwrxTNxryBg wWAXvrSGUqWJXZqnSdFpmpdcOAo9r0Pf0NsByW5jpLiObIGQN5U= =BWfz -----END PGP SIGNATURE----- Merge tag 'linux_kselftest-kunit-fixes-6.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kunit fixes from Shuah Khan: "NULL vs IS_ERR() bug fixes, documentation update, MAINTAINERS file update to add Rae Moar as a reviewer, and a fix to run test suites only after module initialization completes" * tag 'linux_kselftest-kunit-fixes-6.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: Documentation: KUnit: Update the instructions on how to test static functions kunit: run test suites only after module initialization completes MAINTAINERS: kunit: Add Rae Moar as a reviewer kunit: device: Fix a NULL vs IS_ERR() check in init() kunit: Fix a NULL vs IS_ERR() bug |
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|
Lukas Bulwahn
|
5c49b6a4a4 |
vt: remove superfluous CONFIG_HW_CONSOLE
The config HW_CONSOLE is always identical to the config VT and is not visible in the kernel's build menuconfig. So, CONFIG_HW_CONSOLE is redundant. Replace all references to CONFIG_HW_CONSOLE with CONFIG_VT and remove CONFIG_HW_CONSOLE. Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Link: https://lore.kernel.org/r/20240108134102.601-1-lukas.bulwahn@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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|
Marco Elver
|
4434a56ec2 |
stackdepot: make fast paths lock-less again
With the introduction of the pool_rwlock (reader-writer lock), several
fast paths end up taking the pool_rwlock as readers. Furthermore,
stack_depot_put() unconditionally takes the pool_rwlock as a writer.
Despite allowing readers to make forward-progress concurrently,
reader-writer locks have inherent cache contention issues, which does not
scale well on systems with large CPU counts.
Rework the synchronization story of stack depot to again avoid taking any
locks in the fast paths. This is done by relying on RCU-protected list
traversal, and the NMI-safe subset of RCU to delay reuse of freed stack
records. See code comments for more details.
Along with the performance issues, this also fixes incorrect nesting of
rwlock within a raw_spinlock, given that stack depot should still be
usable from anywhere:
| [ BUG: Invalid wait context ]
| -----------------------------
| swapper/0/1 is trying to lock:
| ffffffff89869be8 (pool_rwlock){..--}-{3:3}, at: stack_depot_save_flags
| other info that might help us debug this:
| context-{5:5}
| 2 locks held by swapper/0/1:
| #0: ffffffff89632440 (rcu_read_lock){....}-{1:3}, at: __queue_work
| #1: ffff888100092018 (&pool->lock){-.-.}-{2:2}, at: __queue_work <-- raw_spin_lock
Stack depot usage stats are similar to the previous version after a KASAN
kernel boot:
$ cat /sys/kernel/debug/stackdepot/stats
pools: 838
allocations: 29865
frees: 6604
in_use: 23261
freelist_size: 1879
The number of pools is the same as previously. The freelist size is
minimally larger, but this may also be due to variance across system
boots. This shows that even though we do not eagerly wait for the next
RCU grace period (such as with synchronize_rcu() or call_rcu()) after
freeing a stack record - requiring depot_pop_free() to "poll" if an entry
may be used - new allocations are very likely to happen in later RCU grace
periods.
Link: https://lkml.kernel.org/r/20240118110216.2539519-2-elver@google.com
Fixes:
|
||
|
Marco Elver
|
c2a292545c |
stackdepot: add stats counters exported via debugfs
Add a few basic stats counters for stack depot that can be used to derive if stack depot is working as intended. This is a snapshot of the new stats after booting a system with a KASAN-enabled kernel: $ cat /sys/kernel/debug/stackdepot/stats pools: 838 allocations: 29861 frees: 6561 in_use: 23300 freelist_size: 1840 Generally, "pools" should be well below the max; once the system is booted, "in_use" should remain relatively steady. Link: https://lkml.kernel.org/r/20240118110216.2539519-1-elver@google.com Signed-off-by: Marco Elver <elver@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Alexander Potapenko <glider@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Jens Axboe
|
2263639f96 |
iov_iter: streamline iovec/bvec alignment iteration
Rewrite the alignment checking iterators for iovec and bvec to be easier
to read, and also significantly more compact in terms of generated code.
This saves 270 bytes of text on x86-64 for me (with clang-18) and 224
bytes on arm64 (with gcc-13).
In profiles, also saves a bit of time as well for the same workload:
0.81% -0.18% [kernel.vmlinux] [k] iov_iter_aligned_bvec
0.48% -0.09% [kernel.vmlinux] [k] iov_iter_is_aligned
which is a nice side benefit as well.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/544b31f7-6d4b-42f5-a544-1420501f081f@kernel.dk
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
v2: do the other half of the iterators too, as suggested by Keith.
This further saves some text.
|
||
|
Marcos Paulo de Souza
|
c4bbe83d27 |
livepatch: Move tests from lib/livepatch to selftests/livepatch
The modules are being moved from lib/livepatch to
tools/testing/selftests/livepatch/test_modules.
This code moving will allow writing more complex tests, like for example an
userspace C code that will call a livepatched kernel function.
The modules are now built as out-of-tree
modules, but being part of the kernel source means they will be maintained.
Another advantage of the code moving is to be able to easily change,
debug and rebuild the tests by running make on the selftests/livepatch
directory, which is not currently possible since the modules on
lib/livepatch are build and installed using the "modules" target.
The current approach also keeps the ability to execute the tests manually
by executing the scripts inside selftests/livepatch directory, as it's
currently supported. If the modules are modified, they needed to be
rebuilt before running the scripts though.
The modules are built before running the selftests when using the
kselftest invocations:
make kselftest TARGETS=livepatch
or
make -C tools/testing/selftests/livepatch run_tests
Having the modules being built as out-of-modules requires changing the
currently used 'modprobe' by 'insmod' and adapt the test scripts that
check for the kernel message buffer.
Now it is possible to only compile the modules by running:
make -C tools/testing/selftests/livepatch/
This way the test modules and other test program can be built in order
to be packaged if so desired.
As there aren't any modules being built on lib/livepatch, remove the
TEST_LIVEPATCH Kconfig and it's references.
Note: "make gen_tar" packages the pre-built binaries into the tarball.
It means that it will store the test modules pre-built for
the kernel running on the build host.
Note that these modules need not binary compatible with
the kernel built from the same sources. But the same
is true for other packaged selftest binaries.
The entire kernel sources are needed for rebuilding
the selftests on another system.
Reviewed-by: Joe Lawrence <joe.lawrence@redhat.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
|
||
|
Marco Pagani
|
a1af6a2bfa |
kunit: run test suites only after module initialization completes
Commit |
||
|
Dan Carpenter
|
083974ebb8 |
kunit: device: Fix a NULL vs IS_ERR() check in init()
The root_device_register() function does not return NULL, it returns
error pointers. Fix the check to match.
Fixes:
|
||
|
Dan Carpenter
|
ed1a72fb0d |
kunit: Fix a NULL vs IS_ERR() bug
The kunit_device_register() function doesn't return NULL, it returns
error pointers. Change the KUNIT_ASSERT_NOT_NULL() to check for
ERR_OR_NULL().
Fixes:
|
||
|
Linus Torvalds
|
e5075d8ec5 |
RISC-V Patches for the 6.8 Merge Window, Part 4
This includes everything from part 2: * Support for tuning for systems with fast misaligned accesses. * Support for SBI-based suspend. * Support for the new SBI debug console extension. * The T-Head CMOs now use PA-based flushes. * Support for enabling the V extension in kernel code. * Optimized IP checksum routines. * Various ftrace improvements. * Support for archrandom, which depends on the Zkr extension. and then also a fix for those: * The build is no longer broken under NET=n, KUNIT=y for ports that don't define their own ipv6 checksum. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAmWsCOMTHHBhbG1lckBk YWJiZWx0LmNvbQAKCRAuExnzX7sYieQND/0f+1gizTM0OzuqZG9+DOdWTtqmILyr sZaYXWBw6SPzbUSlwjoW4Qp/S3Ur7IhrbfttM2aMoS4GHZvSESAXOMXC4c7AnCaQ HOXBC2OuXvq6jA0ZjK5XPviR70A/7uD2iu5SNO1hyfJK08LSEu+AulxtkW50+wMc bHXSpZxEf8AtwOJK1cRtwhH4qy+Qcs3Nla3jG7OnDsPbhJVcydHx95eCtfwn2cQA KwJPN1fjRtm4ALZb91QcMDO8VAoanfPEkSR3DoNVE/UfdTItYk35VHmf4RWh7IWA qDnV5Mp/XMX2RmJqwi1ZmSHHX0rfVLL5UqgBhGHC8PuMpLJn5p9U6DZ0qD7YWxcB NDlrHsaXt112RHEEM/7CcLkqEexua/ezcC45E5tSQ4sRDZE3fvgbALao67xSQ22D lCpVAY0Z3o5oWaM/jISiQHjSNn5RrAwEYSvvv2pkW4QAMShA2eggmQaCF+Jl4EMp u6yqJpXxDI99C088uvM6Bi2gcX8fnBSmOzCB/sSU4a1I72UpWrGngqUpTYKHG8Jz cTZhbIKmQirBP0vC/UgMOS0sNuw/NykItfRXZ2g0qGKvw1TjJ6djdeZBKcAj3h0E fJpMxuhmeOFYE7DavnhSt3CResFTXZzXLChjxGbT+g10YzVEf9g7vBVnjxAwad9f tryMVpL/ipGpQQ== =Sjhj -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-6.8-mw4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull more RISC-V updates from Palmer Dabbelt: - Support for tuning for systems with fast misaligned accesses. - Support for SBI-based suspend. - Support for the new SBI debug console extension. - The T-Head CMOs now use PA-based flushes. - Support for enabling the V extension in kernel code. - Optimized IP checksum routines. - Various ftrace improvements. - Support for archrandom, which depends on the Zkr extension. - The build is no longer broken under NET=n, KUNIT=y for ports that don't define their own ipv6 checksum. * tag 'riscv-for-linus-6.8-mw4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (56 commits) lib: checksum: Fix build with CONFIG_NET=n riscv: lib: Check if output in asm goto supported riscv: Fix build error on rv32 + XIP riscv: optimize ELF relocation function in riscv RISC-V: Implement archrandom when Zkr is available riscv: Optimize hweight API with Zbb extension riscv: add dependency among Image(.gz), loader(.bin), and vmlinuz.efi samples: ftrace: Add RISC-V support for SAMPLE_FTRACE_DIRECT[_MULTI] riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support riscv: ftrace: Make function graph use ftrace directly riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY lib/Kconfig.debug: Update AS_HAS_NON_CONST_LEB128 comment and name riscv: Restrict DWARF5 when building with LLVM to known working versions riscv: Hoist linker relaxation disabling logic into Kconfig kunit: Add tests for csum_ipv6_magic and ip_fast_csum riscv: Add checksum library riscv: Add checksum header riscv: Add static key for misaligned accesses asm-generic: Improve csum_fold RISC-V: selftests: cbo: Ensure asm operands match constraints ... |
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|
Linus Torvalds
|
57f22c8dab |
strlcpy removal for v6.8-rc1
- Remove of the final (very recent) user of strlcpy() (in bcachefs). - Remove the strlcpy() API. Long live strscpy(). -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmWq5VgWHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJhsHD/9xfEA1YFC4WzTuX1RcsSwZQTGL L8ej9NuRiQ57vJA37PEV3wyTIVHLOJDjNr+8cmL1Pu0GR9K4R2s4YzdQtaK6pFeE BYuXUOUK9rkQsVLL0DrTv/YryjMah0DDb/M7kKZDRfTgii0yWZ1WqEmO2+9wbdKS n7O9oYZreiNkFg3/6yHPYlBve9QXt+VHN/NIxSQqps3BVXRPKcIwCCJq7IiazBpR xo7FkhTftmL1ZqGOGRcoY7YKWt7WFg9HPBB30WXkqCIqmaFWm4sBancArVgTgQ+r vES/QF4SsFXkprf4fPWuQZlcChc2hibREI9o3t3Qck4FG7W+alXSpj3IxFiZqNFu BvNZwKW5/MB2r+CugM12JUszxAVlcwqskoilGOVD65AJ26xUYh2oAr3kpU5L6Nur c3zcLSlpec9sYQMdXSGQWOF2juhEp2ikceP5dw5ONcj4P7UXadPnB4hsW8ulG844 Rh552sR0je5UCxzXNozec9X1JFZf7Z8lOjdRv1Xs549+F2rmzaZAt2eOnageCCO7 XKoqZ/auIwzj/3WqDxivjs3xT+1PpxJd3bALDXb/iIu10DMbNq7CRwHO+1OZo1e1 4OLE1gbM3Ldv2WgUe2o1dDURnmKq1aiYN8ThoOIVy9VTC0FOxujVXKsd//f6qpMu EGOypgqRBFpVd53DvQ== =DuKT -----END PGP SIGNATURE----- Merge tag 'strlcpy-removal-v6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull strlcpy removal from Kees Cook: "As promised, this is 'part 2' of the hardening tree, late in -rc1 now that all the other trees with strlcpy() removals have landed. One new user appeared (in bcachefs) but was a trivial refactor. The kernel is now free of the strlcpy() API! - Remove of the final (very recent) user of strlcpy() (in bcachefs) - Remove the strlcpy() API. Long live strscpy()" * tag 'strlcpy-removal-v6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: string: Remove strlcpy() bcachefs: Replace strlcpy() with strscpy() |
||
|
Kees Cook
|
d26270061a |
string: Remove strlcpy()
With all the users of strlcpy() removed[1] from the kernel, remove the API, self-tests, and other references. Leave mentions in Documentation (about its deprecation), and in checkpatch.pl (to help migrate host-only tools/ usage). Long live strscpy(). Link: https://github.com/KSPP/linux/issues/89 [1] Cc: Azeem Shaikh <azeemshaikh38@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Whitcroft <apw@canonical.com> Cc: Joe Perches <joe@perches.com> Cc: Dwaipayan Ray <dwaipayanray1@gmail.com> Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com> Cc: linux-hardening@vger.kernel.org Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> |
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|
Palmer Dabbelt
|
f24a70106d
|
lib: checksum: Fix build with CONFIG_NET=n
The generic ipv6 checksums are only defined with CONFIG_NET=y, so gate
the test as well.
Fixes:
|
||
|
Linus Torvalds
|
9d1694dc91 |
for-6.8/block-2024-01-18
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Merge tag 'for-6.8/block-2024-01-18' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
- NVMe pull request via Keith:
- tcp, fc, and rdma target fixes (Maurizio, Daniel, Hannes,
Christoph)
- discard fixes and improvements (Christoph)
- timeout debug improvements (Keith, Max)
- various cleanups (Daniel, Max, Giuxen)
- trace event string fixes (Arnd)
- shadow doorbell setup on reset fix (William)
- a write zeroes quirk for SK Hynix (Jim)
- MD pull request via Song:
- Sparse warning since v6.0 (Bart)
- /proc/mdstat regression since v6.7 (Yu Kuai)
- Use symbolic error value (Christian)
- IO Priority documentation update (Christian)
- Fix for accessing queue limits without having entered the queue
(Christoph, me)
- Fix for loop dio support (Christoph)
- Move null_blk off deprecated ida interface (Christophe)
- Ensure nbd initializes full msghdr (Eric)
- Fix for a regression with the folio conversion, which is now easier
to hit because of an unrelated change (Matthew)
- Remove redundant check in virtio-blk (Li)
- Fix for a potential hang in sbitmap (Ming)
- Fix for partial zone appending (Damien)
- Misc changes and fixes (Bart, me, Kemeng, Dmitry)
* tag 'for-6.8/block-2024-01-18' of git://git.kernel.dk/linux: (45 commits)
Documentation: block: ioprio: Update schedulers
loop: fix the the direct I/O support check when used on top of block devices
blk-mq: Remove the hctx 'run' debugfs attribute
nbd: always initialize struct msghdr completely
block: Fix iterating over an empty bio with bio_for_each_folio_all
block: bio-integrity: fix kcalloc() arguments order
virtio_blk: remove duplicate check if queue is broken in virtblk_done
sbitmap: remove stale comment in sbq_calc_wake_batch
block: Correct a documentation comment in blk-cgroup.c
null_blk: Remove usage of the deprecated ida_simple_xx() API
block: ensure we hold a queue reference when using queue limits
blk-mq: rename blk_mq_can_use_cached_rq
block: print symbolic error name instead of error code
blk-mq: fix IO hang from sbitmap wakeup race
nvmet-rdma: avoid circular locking dependency on install_queue()
nvmet-tcp: avoid circular locking dependency on install_queue()
nvme-pci: set doorbell config before unquiescing
block: fix partial zone append completion handling in req_bio_endio()
block/iocost: silence warning on 'last_period' potentially being unused
md/raid1: Use blk_opf_t for read and write operations
...
|
||
|
Linus Torvalds
|
db5ccb9eb2 |
cxl for v6.8
- Add support for parsing the Coherent Device Attribute Table (CDAT) - Add support for calculating a platform CXL QoS class from CDAT data - Unify the tracing of EFI CXL Events with native CXL Events. - Add Get Timestamp support - Miscellaneous cleanups and fixups -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSbo+XnGs+rwLz9XGXfioYZHlFsZwUCZaHVvAAKCRDfioYZHlFs Z3sCAQDPHSsHmj845k4lvKbWjys3eh78MKKEFyTXLQgYhOlsGAEAigQY2ZiSum52 nwdIgpOOADNt0Iq6yXuLsmn9xvY9bAU= =HjCl -----END PGP SIGNATURE----- Merge tag 'cxl-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl Pull CXL (Compute Express Link) updates from Dan Williams: "The bulk of this update is support for enumerating the performance capabilities of CXL memory targets and connecting that to a platform CXL memory QoS class. Some follow-on work remains to hook up this data into core-mm policy, but that is saved for v6.9. The next significant update is unifying how CXL event records (things like background scrub errors) are processed between so called "firmware first" and native error record retrieval. The CXL driver handler that processes the record retrieved from the device mailbox is now the handler for that same record format coming from an EFI/ACPI notification source. This also contains miscellaneous feature updates, like Get Timestamp, and other fixups. Summary: - Add support for parsing the Coherent Device Attribute Table (CDAT) - Add support for calculating a platform CXL QoS class from CDAT data - Unify the tracing of EFI CXL Events with native CXL Events. - Add Get Timestamp support - Miscellaneous cleanups and fixups" * tag 'cxl-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (41 commits) cxl/core: use sysfs_emit() for attr's _show() cxl/pci: Register for and process CPER events PCI: Introduce cleanup helpers for device reference counts and locks acpi/ghes: Process CXL Component Events cxl/events: Create a CXL event union cxl/events: Separate UUID from event structures cxl/events: Remove passing a UUID to known event traces cxl/events: Create common event UUID defines cxl/events: Promote CXL event structures to a core header cxl: Refactor to use __free() for cxl_root allocation in cxl_endpoint_port_probe() cxl: Refactor to use __free() for cxl_root allocation in cxl_find_nvdimm_bridge() cxl: Fix device reference leak in cxl_port_perf_data_calculate() cxl: Convert find_cxl_root() to return a 'struct cxl_root *' cxl: Introduce put_cxl_root() helper cxl/port: Fix missing target list lock cxl/port: Fix decoder initialization when nr_targets > interleave_ways cxl/region: fix x9 interleave typo cxl/trace: Pass UUID explicitly to event traces cxl/region: use %pap format to print resource_size_t cxl/region: Add dev_dbg() detail on failure to allocate HPA space ... |
||
|
Palmer Dabbelt
|
448857ec53
|
Merge patch series "RISC-V: Disable DWARF5 with known broken LLVM versions"
Nathan Chancellor <nathan@kernel.org> says:
This series disables DWARF5 for LLVM versions where it is known to be
broken due to linker relaxation.
* b4-shazam-merge:
lib/Kconfig.debug: Update AS_HAS_NON_CONST_LEB128 comment and name
riscv: Restrict DWARF5 when building with LLVM to known working versions
riscv: Hoist linker relaxation disabling logic into Kconfig
Link:
|
||
|
Nathan Chancellor
|
a4426641f0
|
lib/Kconfig.debug: Update AS_HAS_NON_CONST_LEB128 comment and name
Fangrui noted that the comment around CONFIG_AS_HAS_NON_CONST_LEB128 could be made more accurate because explicit .sleb128 directives are not emitted, only .uleb128 directives are. Rename the symbol to CONFIG_AS_HAS_NON_CONST_ULEB128 as a result. Further clarifications include replacing "symbol deltas" with the more accurate "label differences", noting that this issue has been resolved in newer binutils (2.41+), and it only occurs when a port uses RISC-V style linker relaxation. Suggested-by: Fangrui Song <maskray@google.com> Signed-off-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Charlie Jenkins <charlie@rivosinc.com> Link: https://lore.kernel.org/r/20231205-riscv-restrict-dwarf5-llvm-v2-3-aedf00a382ac@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> |
||
|
Nathan Chancellor
|
ae84ff9a14
|
riscv: Restrict DWARF5 when building with LLVM to known working versions
LLVM prior to 18.0.0 would generate incorrect debug info for DWARF5 due to linker relaxation, which was worked around in clang by defaulting RISC-V to DWARF4 [1]. Unfortunately, this workaround does not work for the kernel because the DWARF version can be independently changed from the default in Kconfig. Do not allow DWARF5 to be selected for RISC-V when using linker relaxation (ld.lld >= 15.0.0) and a version of LLVM that does not have the fixes (the integrated assembler [2] and ld.lld [3] < 18.0.0) necessary to generate the correct debug info. Link: |
||
|
Charlie Jenkins
|
6f4c45cbcb
|
kunit: Add tests for csum_ipv6_magic and ip_fast_csum
Supplement existing checksum tests with tests for csum_ipv6_magic and ip_fast_csum. Signed-off-by: Charlie Jenkins <charlie@rivosinc.com> Link: https://lore.kernel.org/r/20240108-optimize_checksum-v15-5-1c50de5f2167@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> |
||
|
Linus Torvalds
|
7f5e47f785 |
17 hotfixes. 10 address post-6.7 issues and the other 7 are cc:stable.
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZaHe5gAKCRDdBJ7gKXxA jrAiAQCYZQuwsNVyGJUuPD/GGQzqVUZNpWcuYwMXXAi6dO5rSAD+LDeFviun2K52 uHCz4iRq5EwNLA+MbdHtAnQzr+e5CQ8= =Jjkw -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2024-01-12-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc hotfixes from Andrew Morton: "For once not mostly MM-related. 17 hotfixes. 10 address post-6.7 issues and the other 7 are cc:stable" * tag 'mm-hotfixes-stable-2024-01-12-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: userfaultfd: avoid huge_zero_page in UFFDIO_MOVE MAINTAINERS: add entry for shrinker selftests: mm: hugepage-vmemmap fails on 64K page size systems mm/memory_hotplug: fix memmap_on_memory sysfs value retrieval mailmap: switch email for Tanzir Hasan mailmap: add old address mappings for Randy kernel/crash_core.c: make __crash_hotplug_lock static efi: disable mirror feature during crashkernel kexec: do syscore_shutdown() in kernel_kexec mailmap: update entry for Manivannan Sadhasivam fs/proc/task_mmu: move mmu notification mechanism inside mm lock mm: zswap: switch maintainers to recently active developers and reviewers scripts/decode_stacktrace.sh: optionally use LLVM utilities kasan: avoid resetting aux_lock lib/Kconfig.debug: disable CONFIG_DEBUG_INFO_BTF for Hexagon MAINTAINERS: update LTP maintainers kdump: defer the insertion of crashkernel resources |
||
|
Kemeng Shi
|
5c7fa5c8ad |
sbitmap: remove stale comment in sbq_calc_wake_batch
After commit
|
||
|
Nathan Chancellor
|
aaa2c9a97c |
lib/Kconfig.debug: disable CONFIG_DEBUG_INFO_BTF for Hexagon
pahole, which generates BTF, relies on elfutils to process DWARF debug info. Because kernel modules are relocatable files, elfutils needs to resolve relocations when processing the DWARF .debug sections. Hexagon is not supported in binutils or elfutils, so elfutils is unable to process relocations in kernel modules, causing pahole to crash during BTF generation. Do not allow CONFIG_DEBUG_INFO_BTF to be selected for Hexagon until it is supported in elfutils, so that there are no more cryptic build failures during BTF generation. Link: https://lkml.kernel.org/r/20240105-hexagon-disable-btf-v1-1-ddab073e7f74@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202312192107.wMIKiZWw-lkp@intel.com/ Suggested-by: Nick Desaulniers <ndesaulniers@google.com> Acked-by: Brian Cain <bcain@quicinc.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
3e7aeb78ab |
Networking changes for 6.8.
Core & protocols
----------------
- Analyze and reorganize core networking structs (socks, netdev,
netns, mibs) to optimize cacheline consumption and set up
build time warnings to safeguard against future header changes.
This improves TCP performances with many concurrent connections
up to 40%.
- Add page-pool netlink-based introspection, exposing the
memory usage and recycling stats. This helps indentify
bad PP users and possible leaks.
- Refine TCP/DCCP source port selection to no longer favor even
source port at connect() time when IP_LOCAL_PORT_RANGE is set.
This lowers the time taken by connect() for hosts having
many active connections to the same destination.
- Refactor the TCP bind conflict code, shrinking related socket
structs.
- Refactor TCP SYN-Cookie handling, as a preparation step to
allow arbitrary SYN-Cookie processing via eBPF.
- Tune optmem_max for 0-copy usage, increasing the default value
to 128KB and namespecifying it.
- Allow coalescing for cloned skbs coming from page pools, improving
RX performances with some common configurations.
- Reduce extension header parsing overhead at GRO time.
- Add bridge MDB bulk deletion support, allowing user-space to
request the deletion of matching entries.
- Reorder nftables struct members, to keep data accessed by the
datapath first.
- Introduce TC block ports tracking and use. This allows supporting
multicast-like behavior at the TC layer.
- Remove UAPI support for retired TC qdiscs (dsmark, CBQ and ATM) and
classifiers (RSVP and tcindex).
- More data-race annotations.
- Extend the diag interface to dump TCP bound-only sockets.
- Conditional notification of events for TC qdisc class and actions.
- Support for WPAN dynamic associations with nearby devices, to form
a sub-network using a specific PAN ID.
- Implement SMCv2.1 virtual ISM device support.
- Add support for Batman-avd mulicast packet type.
BPF
---
- Tons of verifier improvements:
- BPF register bounds logic and range support along with a large
test suite
- log improvements
- complete precision tracking support for register spills
- track aligned STACK_ZERO cases as imprecise spilled registers. It
improves the verifier "instructions processed" metric from single
digit to 50-60% for some programs
- support for user's global BPF subprogram arguments with few
commonly requested annotations for a better developer experience
- support tracking of BPF_JNE which helps cases when the compiler
transforms (unsigned) "a > 0" into "if a == 0 goto xxx" and the
like
- several fixes
- Add initial TX metadata implementation for AF_XDP with support in
mlx5 and stmmac drivers. Two types of offloads are supported right
now, that is, TX timestamp and TX checksum offload.
- Fix kCFI bugs in BPF all forms of indirect calls from BPF into
kernel and from kernel into BPF work with CFI enabled. This allows
BPF to work with CONFIG_FINEIBT=y.
- Change BPF verifier logic to validate global subprograms lazily
instead of unconditionally before the main program, so they can be
guarded using BPF CO-RE techniques.
- Support uid/gid options when mounting bpffs.
- Add a new kfunc which acquires the associated cgroup of a task
within a specific cgroup v1 hierarchy where the latter is identified
by its id.
- Extend verifier to allow bpf_refcount_acquire() of a map value field
obtained via direct load which is a use-case needed in sched_ext.
- Add BPF link_info support for uprobe multi link along with bpftool
integration for the latter.
- Support for VLAN tag in XDP hints.
- Remove deprecated bpfilter kernel leftovers given the project
is developed in user-space (https://github.com/facebook/bpfilter).
Misc
----
- Support for parellel TC self-tests execution.
- Increase MPTCP self-tests coverage.
- Updated the bridge documentation, including several so-far
undocumented features.
- Convert all the net self-tests to run in unique netns, to
avoid random failures due to conflict and allow concurrent
runs.
- Add TCP-AO self-tests.
- Add kunit tests for both cfg80211 and mac80211.
- Autogenerate Netlink families documentation from YAML spec.
- Add yml-gen support for fixed headers and recursive nests, the
tool can now generate user-space code for all genetlink families
for which we have specs.
- A bunch of additional module descriptions fixes.
- Catch incorrect freeing of pages belonging to a page pool.
Driver API
----------
- Rust abstractions for network PHY drivers; do not cover yet the
full C API, but already allow implementing functional PHY drivers
in rust.
- Introduce queue and NAPI support in the netdev Netlink interface,
allowing complete access to the device <> NAPIs <> queues
relationship.
- Introduce notifications filtering for devlink to allow control
application scale to thousands of instances.
- Improve PHY validation, requesting rate matching information for
each ethtool link mode supported by both the PHY and host.
- Add support for ethtool symmetric-xor RSS hash.
- ACPI based Wifi band RFI (WBRF) mitigation feature for the AMD
platform.
- Expose pin fractional frequency offset value over new DPLL generic
netlink attribute.
- Convert older drivers to platform remove callback returning void.
- Add support for PHY package MMD read/write.
New hardware / drivers
----------------------
- Ethernet:
- Octeon CN10K devices
- Broadcom 5760X P7
- Qualcomm SM8550 SoC
- Texas Instrument DP83TG720S PHY
- Bluetooth:
- IMC Networks Bluetooth radio
Removed
-------
- WiFi:
- libertas 16-bit PCMCIA support
- Atmel at76c50x drivers
- HostAP ISA/PCMCIA style 802.11b driver
- zd1201 802.11b USB dongles
- Orinoco ISA/PCMCIA 802.11b driver
- Aviator/Raytheon driver
- Planet WL3501 driver
- RNDIS USB 802.11b driver
Drivers
-------
- Ethernet high-speed NICs:
- Intel (100G, ice, idpf):
- allow one by one port representors creation and removal
- add temperature and clock information reporting
- add get/set for ethtool's header split ringparam
- add again FW logging
- adds support switchdev hardware packet mirroring
- iavf: implement symmetric-xor RSS hash
- igc: add support for concurrent physical and free-running timers
- i40e: increase the allowable descriptors
- nVidia/Mellanox:
- Preparation for Socket-Direct multi-dev netdev. That will allow
in future releases combining multiple PFs devices attached to
different NUMA nodes under the same netdev
- Broadcom (bnxt):
- TX completion handling improvements
- add basic ntuple filter support
- reduce MSIX vectors usage for MQPRIO offload
- add VXLAN support, USO offload and TX coalesce completion for P7
- Marvell Octeon EP:
- xmit-more support
- add PF-VF mailbox support and use it for FW notifications for VFs
- Wangxun (ngbe/txgbe):
- implement ethtool functions to operate pause param, ring param,
coalesce channel number and msglevel
- Netronome/Corigine (nfp):
- add flow-steering support
- support UDP segmentation offload
- Ethernet NICs embedded, slower, virtual:
- Xilinx AXI: remove duplicate DMA code adopting the dma engine driver
- stmmac: add support for HW-accelerated VLAN stripping
- TI AM654x sw: add mqprio, frame preemption & coalescing
- gve: add support for non-4k page sizes.
- virtio-net: support dynamic coalescing moderation
- nVidia/Mellanox Ethernet datacenter switches:
- allow firmware upgrade without a reboot
- more flexible support for bridge flooding via the compressed
FID flooding mode
- Ethernet embedded switches:
- Microchip:
- fine-tune flow control and speed configurations in KSZ8xxx
- KSZ88X3: enable setting rmii reference
- Renesas:
- add jumbo frames support
- Marvell:
- 88E6xxx: add "eth-mac" and "rmon" stats support
- Ethernet PHYs:
- aquantia: add firmware load support
- at803x: refactor the driver to simplify adding support for more
chip variants
- NXP C45 TJA11xx: Add MACsec offload support
- Wifi:
- MediaTek (mt76):
- NVMEM EEPROM improvements
- mt7996 Extremely High Throughput (EHT) improvements
- mt7996 Wireless Ethernet Dispatcher (WED) support
- mt7996 36-bit DMA support
- Qualcomm (ath12k):
- support for a single MSI vector
- WCN7850: support AP mode
- Intel (iwlwifi):
- new debugfs file fw_dbg_clear
- allow concurrent P2P operation on DFS channels
- Bluetooth:
- QCA2066: support HFP offload
- ISO: more broadcast-related improvements
- NXP: better recovery in case receiver/transmitter get out of sync
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"The most interesting thing is probably the networking structs
reorganization and a significant amount of changes is around
self-tests.
Core & protocols:
- Analyze and reorganize core networking structs (socks, netdev,
netns, mibs) to optimize cacheline consumption and set up build
time warnings to safeguard against future header changes
This improves TCP performances with many concurrent connections up
to 40%
- Add page-pool netlink-based introspection, exposing the memory
usage and recycling stats. This helps indentify bad PP users and
possible leaks
- Refine TCP/DCCP source port selection to no longer favor even
source port at connect() time when IP_LOCAL_PORT_RANGE is set. This
lowers the time taken by connect() for hosts having many active
connections to the same destination
- Refactor the TCP bind conflict code, shrinking related socket
structs
- Refactor TCP SYN-Cookie handling, as a preparation step to allow
arbitrary SYN-Cookie processing via eBPF
- Tune optmem_max for 0-copy usage, increasing the default value to
128KB and namespecifying it
- Allow coalescing for cloned skbs coming from page pools, improving
RX performances with some common configurations
- Reduce extension header parsing overhead at GRO time
- Add bridge MDB bulk deletion support, allowing user-space to
request the deletion of matching entries
- Reorder nftables struct members, to keep data accessed by the
datapath first
- Introduce TC block ports tracking and use. This allows supporting
multicast-like behavior at the TC layer
- Remove UAPI support for retired TC qdiscs (dsmark, CBQ and ATM) and
classifiers (RSVP and tcindex)
- More data-race annotations
- Extend the diag interface to dump TCP bound-only sockets
- Conditional notification of events for TC qdisc class and actions
- Support for WPAN dynamic associations with nearby devices, to form
a sub-network using a specific PAN ID
- Implement SMCv2.1 virtual ISM device support
- Add support for Batman-avd mulicast packet type
BPF:
- Tons of verifier improvements:
- BPF register bounds logic and range support along with a large
test suite
- log improvements
- complete precision tracking support for register spills
- track aligned STACK_ZERO cases as imprecise spilled registers.
This improves the verifier "instructions processed" metric from
single digit to 50-60% for some programs
- support for user's global BPF subprogram arguments with few
commonly requested annotations for a better developer
experience
- support tracking of BPF_JNE which helps cases when the compiler
transforms (unsigned) "a > 0" into "if a == 0 goto xxx" and the
like
- several fixes
- Add initial TX metadata implementation for AF_XDP with support in
mlx5 and stmmac drivers. Two types of offloads are supported right
now, that is, TX timestamp and TX checksum offload
- Fix kCFI bugs in BPF all forms of indirect calls from BPF into
kernel and from kernel into BPF work with CFI enabled. This allows
BPF to work with CONFIG_FINEIBT=y
- Change BPF verifier logic to validate global subprograms lazily
instead of unconditionally before the main program, so they can be
guarded using BPF CO-RE techniques
- Support uid/gid options when mounting bpffs
- Add a new kfunc which acquires the associated cgroup of a task
within a specific cgroup v1 hierarchy where the latter is
identified by its id
- Extend verifier to allow bpf_refcount_acquire() of a map value
field obtained via direct load which is a use-case needed in
sched_ext
- Add BPF link_info support for uprobe multi link along with bpftool
integration for the latter
- Support for VLAN tag in XDP hints
- Remove deprecated bpfilter kernel leftovers given the project is
developed in user-space (https://github.com/facebook/bpfilter)
Misc:
- Support for parellel TC self-tests execution
- Increase MPTCP self-tests coverage
- Updated the bridge documentation, including several so-far
undocumented features
- Convert all the net self-tests to run in unique netns, to avoid
random failures due to conflict and allow concurrent runs
- Add TCP-AO self-tests
- Add kunit tests for both cfg80211 and mac80211
- Autogenerate Netlink families documentation from YAML spec
- Add yml-gen support for fixed headers and recursive nests, the tool
can now generate user-space code for all genetlink families for
which we have specs
- A bunch of additional module descriptions fixes
- Catch incorrect freeing of pages belonging to a page pool
Driver API:
- Rust abstractions for network PHY drivers; do not cover yet the
full C API, but already allow implementing functional PHY drivers
in rust
- Introduce queue and NAPI support in the netdev Netlink interface,
allowing complete access to the device <> NAPIs <> queues
relationship
- Introduce notifications filtering for devlink to allow control
application scale to thousands of instances
- Improve PHY validation, requesting rate matching information for
each ethtool link mode supported by both the PHY and host
- Add support for ethtool symmetric-xor RSS hash
- ACPI based Wifi band RFI (WBRF) mitigation feature for the AMD
platform
- Expose pin fractional frequency offset value over new DPLL generic
netlink attribute
- Convert older drivers to platform remove callback returning void
- Add support for PHY package MMD read/write
New hardware / drivers:
- Ethernet:
- Octeon CN10K devices
- Broadcom 5760X P7
- Qualcomm SM8550 SoC
- Texas Instrument DP83TG720S PHY
- Bluetooth:
- IMC Networks Bluetooth radio
Removed:
- WiFi:
- libertas 16-bit PCMCIA support
- Atmel at76c50x drivers
- HostAP ISA/PCMCIA style 802.11b driver
- zd1201 802.11b USB dongles
- Orinoco ISA/PCMCIA 802.11b driver
- Aviator/Raytheon driver
- Planet WL3501 driver
- RNDIS USB 802.11b driver
Driver updates:
- Ethernet high-speed NICs:
- Intel (100G, ice, idpf):
- allow one by one port representors creation and removal
- add temperature and clock information reporting
- add get/set for ethtool's header split ringparam
- add again FW logging
- adds support switchdev hardware packet mirroring
- iavf: implement symmetric-xor RSS hash
- igc: add support for concurrent physical and free-running
timers
- i40e: increase the allowable descriptors
- nVidia/Mellanox:
- Preparation for Socket-Direct multi-dev netdev. That will
allow in future releases combining multiple PFs devices
attached to different NUMA nodes under the same netdev
- Broadcom (bnxt):
- TX completion handling improvements
- add basic ntuple filter support
- reduce MSIX vectors usage for MQPRIO offload
- add VXLAN support, USO offload and TX coalesce completion
for P7
- Marvell Octeon EP:
- xmit-more support
- add PF-VF mailbox support and use it for FW notifications
for VFs
- Wangxun (ngbe/txgbe):
- implement ethtool functions to operate pause param, ring
param, coalesce channel number and msglevel
- Netronome/Corigine (nfp):
- add flow-steering support
- support UDP segmentation offload
- Ethernet NICs embedded, slower, virtual:
- Xilinx AXI: remove duplicate DMA code adopting the dma engine
driver
- stmmac: add support for HW-accelerated VLAN stripping
- TI AM654x sw: add mqprio, frame preemption & coalescing
- gve: add support for non-4k page sizes.
- virtio-net: support dynamic coalescing moderation
- nVidia/Mellanox Ethernet datacenter switches:
- allow firmware upgrade without a reboot
- more flexible support for bridge flooding via the compressed
FID flooding mode
- Ethernet embedded switches:
- Microchip:
- fine-tune flow control and speed configurations in KSZ8xxx
- KSZ88X3: enable setting rmii reference
- Renesas:
- add jumbo frames support
- Marvell:
- 88E6xxx: add "eth-mac" and "rmon" stats support
- Ethernet PHYs:
- aquantia: add firmware load support
- at803x: refactor the driver to simplify adding support for more
chip variants
- NXP C45 TJA11xx: Add MACsec offload support
- Wifi:
- MediaTek (mt76):
- NVMEM EEPROM improvements
- mt7996 Extremely High Throughput (EHT) improvements
- mt7996 Wireless Ethernet Dispatcher (WED) support
- mt7996 36-bit DMA support
- Qualcomm (ath12k):
- support for a single MSI vector
- WCN7850: support AP mode
- Intel (iwlwifi):
- new debugfs file fw_dbg_clear
- allow concurrent P2P operation on DFS channels
- Bluetooth:
- QCA2066: support HFP offload
- ISO: more broadcast-related improvements
- NXP: better recovery in case receiver/transmitter get out of sync"
* tag 'net-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1714 commits)
lan78xx: remove redundant statement in lan78xx_get_eee
lan743x: remove redundant statement in lan743x_ethtool_get_eee
bnxt_en: Fix RCU locking for ntuple filters in bnxt_rx_flow_steer()
bnxt_en: Fix RCU locking for ntuple filters in bnxt_srxclsrldel()
bnxt_en: Remove unneeded variable in bnxt_hwrm_clear_vnic_filter()
tcp: Revert no longer abort SYN_SENT when receiving some ICMP
Revert "mlx5 updates 2023-12-20"
Revert "net: stmmac: Enable Per DMA Channel interrupt"
ipvlan: Remove usage of the deprecated ida_simple_xx() API
ipvlan: Fix a typo in a comment
net/sched: Remove ipt action tests
net: stmmac: Use interrupt mode INTM=1 for per channel irq
net: stmmac: Add support for TX/RX channel interrupt
net: stmmac: Make MSI interrupt routine generic
dt-bindings: net: snps,dwmac: per channel irq
net: phy: at803x: make read_status more generic
net: phy: at803x: add support for cdt cross short test for qca808x
net: phy: at803x: refactor qca808x cable test get status function
net: phy: at803x: generalize cdt fault length function
net: ethernet: cortina: Drop TSO support
...
|
||
|
Linus Torvalds
|
de927f6c0b |
s390 updates for 6.8 merge window
- Add machine variable capacity information to /proc/sysinfo. - Limit the waste of page tables and always align vmalloc area size and base address on segment boundary. - Fix a memory leak when an attempt to register interruption sub class (ISC) for the adjunct-processor (AP) guest failed. - Reset response code AP_RESPONSE_INVALID_GISA to understandable by guest AP_RESPONSE_INVALID_ADDRESS in response to a failed interruption sub class (ISC) registration attempt. - Improve reaction to adjunct-processor (AP) AP_RESPONSE_OTHERWISE_CHANGED response code when enabling interrupts on behalf of a guest. - Fix incorrect sysfs 'status' attribute of adjunct-processor (AP) queue device bound to the vfio_ap device driver when the mediated device is attached to a guest, but the queue device is not passed through. - Rework struct ap_card to hold the whole adjunct-processor (AP) card hardware information. As result, all the ugly bit checks are replaced by simple evaluations of the required bit fields. - Improve handling of some weird scenarios between service element (SE) host and SE guest with adjunct-processor (AP) pass-through support. - Change local_ctl_set_bit() and local_ctl_clear_bit() so they return the previous value of the to be changed control register. This is useful if a bit is only changed temporarily and the previous content needs to be restored. - The kernel starts with machine checks disabled and is expected to enable it once trap_init() is called. However the implementation allows machine checks early. Consistently enable it in trap_init() only. - local_mcck_disable() and local_mcck_enable() assume that machine checks are always enabled. Instead implement and use local_mcck_save() and local_mcck_restore() to disable machine checks and restore the previous state. - Modification of floating point control (FPC) register of a traced process using ptrace interface may lead to corruption of the FPC register of the tracing process. Fix this. - kvm_arch_vcpu_ioctl_set_fpu() allows to set the floating point control (FPC) register in vCPU, but may lead to corruption of the FPC register of the host process. Fix this. - Use READ_ONCE() to read a vCPU floating point register value from the memory mapped area. This avoids that, depending on code generation, a different value is tested for validity than the one that is used. - Get rid of test_fp_ctl(), since it is quite subtle to use it correctly. Instead copy a new floating point control register value into its save area and test the validity of the new value when loading it. - Remove superfluous save_fpu_regs() call. - Remove s390 support for ARCH_WANTS_DYNAMIC_TASK_STRUCT. All machines provide the vector facility since many years and the need to make the task structure size dependent on the vector facility does not exist. - Remove the "novx" kernel command line option, as the vector code runs without any problems since many years. - Add the vector facility to the z13 architecture level set (ALS). All hypervisors support the vector facility since many years. This allows compile time optimizations of the kernel. - Get rid of MACHINE_HAS_VX and replace it with cpu_has_vx(). As result, the compiled code will have less runtime checks and less code. - Convert pgste_get_lock() and pgste_set_unlock() ASM inlines to C. - Convert the struct subchannel spinlock from pointer to member. -----BEGIN PGP SIGNATURE----- iI0EABYIADUWIQQrtrZiYVkVzKQcYivNdxKlNrRb8AUCZZxnchccYWdvcmRlZXZA bGludXguaWJtLmNvbQAKCRDNdxKlNrRb8PyGAP9Z0Z1Pm3hPf24M4FgY5uuRqBHo VoiuohOZRGONwifnsgEAmN/3ba/7d/j0iMwpUdUFouiqtwTUihh15wYx1sH2IA8= =F6YD -----END PGP SIGNATURE----- Merge tag 's390-6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Alexander Gordeev: - Add machine variable capacity information to /proc/sysinfo. - Limit the waste of page tables and always align vmalloc area size and base address on segment boundary. - Fix a memory leak when an attempt to register interruption sub class (ISC) for the adjunct-processor (AP) guest failed. - Reset response code AP_RESPONSE_INVALID_GISA to understandable by guest AP_RESPONSE_INVALID_ADDRESS in response to a failed interruption sub class (ISC) registration attempt. - Improve reaction to adjunct-processor (AP) AP_RESPONSE_OTHERWISE_CHANGED response code when enabling interrupts on behalf of a guest. - Fix incorrect sysfs 'status' attribute of adjunct-processor (AP) queue device bound to the vfio_ap device driver when the mediated device is attached to a guest, but the queue device is not passed through. - Rework struct ap_card to hold the whole adjunct-processor (AP) card hardware information. As result, all the ugly bit checks are replaced by simple evaluations of the required bit fields. - Improve handling of some weird scenarios between service element (SE) host and SE guest with adjunct-processor (AP) pass-through support. - Change local_ctl_set_bit() and local_ctl_clear_bit() so they return the previous value of the to be changed control register. This is useful if a bit is only changed temporarily and the previous content needs to be restored. - The kernel starts with machine checks disabled and is expected to enable it once trap_init() is called. However the implementation allows machine checks early. Consistently enable it in trap_init() only. - local_mcck_disable() and local_mcck_enable() assume that machine checks are always enabled. Instead implement and use local_mcck_save() and local_mcck_restore() to disable machine checks and restore the previous state. - Modification of floating point control (FPC) register of a traced process using ptrace interface may lead to corruption of the FPC register of the tracing process. Fix this. - kvm_arch_vcpu_ioctl_set_fpu() allows to set the floating point control (FPC) register in vCPU, but may lead to corruption of the FPC register of the host process. Fix this. - Use READ_ONCE() to read a vCPU floating point register value from the memory mapped area. This avoids that, depending on code generation, a different value is tested for validity than the one that is used. - Get rid of test_fp_ctl(), since it is quite subtle to use it correctly. Instead copy a new floating point control register value into its save area and test the validity of the new value when loading it. - Remove superfluous save_fpu_regs() call. - Remove s390 support for ARCH_WANTS_DYNAMIC_TASK_STRUCT. All machines provide the vector facility since many years and the need to make the task structure size dependent on the vector facility does not exist. - Remove the "novx" kernel command line option, as the vector code runs without any problems since many years. - Add the vector facility to the z13 architecture level set (ALS). All hypervisors support the vector facility since many years. This allows compile time optimizations of the kernel. - Get rid of MACHINE_HAS_VX and replace it with cpu_has_vx(). As result, the compiled code will have less runtime checks and less code. - Convert pgste_get_lock() and pgste_set_unlock() ASM inlines to C. - Convert the struct subchannel spinlock from pointer to member. * tag 's390-6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (24 commits) Revert "s390: update defconfigs" s390/cio: make sch->lock spinlock pointer a member s390: update defconfigs s390/mm: convert pgste locking functions to C s390/fpu: get rid of MACHINE_HAS_VX s390/als: add vector facility to z13 architecture level set s390/fpu: remove "novx" option s390/fpu: remove ARCH_WANTS_DYNAMIC_TASK_STRUCT support KVM: s390: remove superfluous save_fpu_regs() call s390/fpu: get rid of test_fp_ctl() KVM: s390: use READ_ONCE() to read fpc register value KVM: s390: fix setting of fpc register s390/ptrace: handle setting of fpc register correctly s390/nmi: implement and use local_mcck_save() / local_mcck_restore() s390/nmi: consistently enable machine checks in trap_init() s390/ctlreg: return old register contents when changing bits s390/ap: handle outband SE bind state change s390/ap: store TAPQ hwinfo in struct ap_card s390/vfio-ap: fix sysfs status attribute for AP queue devices s390/vfio-ap: improve reaction to response code 07 from PQAP(AQIC) command ... |
||
|
Linus Torvalds
|
a05aea98d4 |
sysctl-6.8-rc1
To help make the move of sysctls out of kernel/sysctl.c not incur a size
penalty sysctl has been changed to allow us to not require the sentinel, the
final empty element on the sysctl array. Joel Granados has been doing all this
work. On the v6.6 kernel we got the major infrastructure changes required to
support this. For v6.7 we had all arch/ and drivers/ modified to remove
the sentinel. For v6.8-rc1 we get a few more updates for fs/ directory only.
The kernel/ directory is left but we'll save that for v6.9-rc1 as those patches
are still being reviewed. After that we then can expect also the removal of the
no longer needed check for procname == NULL.
Let us recap the purpose of this work:
- this helps reduce the overall build time size of the kernel and run time
memory consumed by the kernel by about ~64 bytes per array
- the extra 64-byte penalty is no longer inncurred now when we move sysctls
out from kernel/sysctl.c to their own files
Thomas Weißschuh also sent a few cleanups, for v6.9-rc1 we expect to see further
work by Thomas Weißschuh with the constificatin of the struct ctl_table.
Due to Joel Granados's work, and to help bring in new blood, I have suggested
for him to become a maintainer and he's accepted. So for v6.9-rc1 I look forward
to seeing him sent you a pull request for further sysctl changes. This also
removes Iurii Zaikin as a maintainer as he has moved on to other projects and
has had no time to help at all.
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Merge tag 'sysctl-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
Pull sysctl updates from Luis Chamberlain:
"To help make the move of sysctls out of kernel/sysctl.c not incur a
size penalty sysctl has been changed to allow us to not require the
sentinel, the final empty element on the sysctl array. Joel Granados
has been doing all this work.
In the v6.6 kernel we got the major infrastructure changes required to
support this. For v6.7 we had all arch/ and drivers/ modified to
remove the sentinel. For v6.8-rc1 we get a few more updates for fs/
directory only.
The kernel/ directory is left but we'll save that for v6.9-rc1 as
those patches are still being reviewed. After that we then can expect
also the removal of the no longer needed check for procname == NULL.
Let us recap the purpose of this work:
- this helps reduce the overall build time size of the kernel and run
time memory consumed by the kernel by about ~64 bytes per array
- the extra 64-byte penalty is no longer inncurred now when we move
sysctls out from kernel/sysctl.c to their own files
Thomas Weißschuh also sent a few cleanups, for v6.9-rc1 we expect to
see further work by Thomas Weißschuh with the constificatin of the
struct ctl_table.
Due to Joel Granados's work, and to help bring in new blood, I have
suggested for him to become a maintainer and he's accepted. So for
v6.9-rc1 I look forward to seeing him sent you a pull request for
further sysctl changes. This also removes Iurii Zaikin as a maintainer
as he has moved on to other projects and has had no time to help at
all"
* tag 'sysctl-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
sysctl: remove struct ctl_path
sysctl: delete unused define SYSCTL_PERM_EMPTY_DIR
coda: Remove the now superfluous sentinel elements from ctl_table array
sysctl: Remove the now superfluous sentinel elements from ctl_table array
fs: Remove the now superfluous sentinel elements from ctl_table array
cachefiles: Remove the now superfluous sentinel element from ctl_table array
sysclt: Clarify the results of selftest run
sysctl: Add a selftest for handling empty dirs
sysctl: Fix out of bounds access for empty sysctl registers
MAINTAINERS: Add Joel Granados as co-maintainer for proc sysctl
MAINTAINERS: remove Iurii Zaikin from proc sysctl
|
||
|
Linus Torvalds
|
78273df7f6 |
header cleanups for 6.8
The goal is to get sched.h down to a type only header, so the main thing happening in this patchset is splitting out various _types.h headers and dependency fixups, as well as moving some things out of sched.h to better locations. This is prep work for the memory allocation profiling patchset which adds new sched.h interdepencencies. Testing - it's been in -next, and fixes from pretty much all architectures have percolated in - nothing major. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKnAFLkS8Qha+jvQrE6szbY3KbnYFAmWfBwwACgkQE6szbY3K bnZPwBAAmuRojXaeWxi01IPIOehSGDe68vw44PR9glEMZvxdnZuPOdvE4/+245/L bRKU2WBCjBUokUbV9msIShwRkFTZAmEMPNfPAAsFMA+VXeDYHKB+ZRdwTggNAQ+I SG6fZgh5m0HsewCDxU8oqVHkjVq4fXn0cy+aL6xLEd9gu67GoBzX2pDieS2Kvy6j jnyoKTxFwb+LTQgph0P4EIpq5I2umAsdLwdSR8EJ+8e9NiNvMo1pI00Lx/ntAnFZ JftWUJcMy3TQ5u1GkyfQN9y/yThX1bZK5GvmHS9SJ2Dkacaus5d+xaKCHtRuFS1I 7C6b8PsNgRczUMumBXus44HdlNfNs1yU3lvVxFvBIPE1qC9pYRHrkWIXXIocXLLC oxTEJ6B2G3BQZVQgLIA4fOaxMVhmvKffi/aEZLi9vN9VVosd1a6XNKI6KbyRnXFp GSs9qDqszhn5I3GYNlDNQTc/8UsRlhPFgS6nS0By6QnvxtGi9QkU2tBRBsXvqwCy cLoCYIhc2tvugHvld70dz26umiJ4rnmxGlobStNoigDvIKAIUt1UmIdr1so8P8eH xehnL9ZcOX6xnANDL0AqMFFHV6I58CJynhFdUoXfVQf/DWLGX48mpi9LVNsYBzsI CAwVOAQ0UjGrpdWmJ9ueY/ABYqg9vRjzaDEXQ+MhAYO55CLaVsg= =3tyT -----END PGP SIGNATURE----- Merge tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs Pull header cleanups from Kent Overstreet: "The goal is to get sched.h down to a type only header, so the main thing happening in this patchset is splitting out various _types.h headers and dependency fixups, as well as moving some things out of sched.h to better locations. This is prep work for the memory allocation profiling patchset which adds new sched.h interdepencencies" * tag 'header_cleanup-2024-01-10' of https://evilpiepirate.org/git/bcachefs: (51 commits) Kill sched.h dependency on rcupdate.h kill unnecessary thread_info.h include Kill unnecessary kernel.h include preempt.h: Kill dependency on list.h rseq: Split out rseq.h from sched.h LoongArch: signal.c: add header file to fix build error restart_block: Trim includes lockdep: move held_lock to lockdep_types.h sem: Split out sem_types.h uidgid: Split out uidgid_types.h seccomp: Split out seccomp_types.h refcount: Split out refcount_types.h uapi/linux/resource.h: fix include x86/signal: kill dependency on time.h syscall_user_dispatch.h: split out *_types.h mm_types_task.h: Trim dependencies Split out irqflags_types.h ipc: Kill bogus dependency on spinlock.h shm: Slim down dependencies workqueue: Split out workqueue_types.h ... |
||
|
Linus Torvalds
|
0cb552aa97 |
This update includes the following changes:
API: - Add incremental lskcipher/skcipher processing. Algorithms: - Remove SHA1 from drbg. - Remove CFB and OFB. Drivers: - Add comp high perf mode configuration in hisilicon/zip. - Add support for 420xx devices in qat. - Add IAA Compression Accelerator driver. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEn51F/lCuNhUwmDeSxycdCkmxi6cFAmWdxR4ACgkQxycdCkmx i6fAjg//SqOwxeUYWpT4KdMCxGMn7U9iE3wJeX8nqfma3a62Wt2soey7H3GB9G7v gEh0OraOKIGeBtS8giIX83SZJOirMlgeE2tngxMmR9O95EUNR0XGnywF/emyt96z WcSN1IrRZ8qQzTASBF0KpV2Ir5mNzBiOwU9tVHIztROufA4C1fwKl7yhPM67C3MU 88vf1R+ZeWUbNbzQNC8oYIqU11dcNaMNhOVPiZCECKbIR6LqwUf3Swexz+HuPR/D WTSrb4J3Eeg77SMhI959/Hi53WeEyVW1vWYAVMgfTEFw6PESiOXyPeImfzUMFos6 fFYIAoQzoG5GlQeYwLLSoZAwtfY+f7gTNoaE+bnPk5317EFzFDijaXrkjjVKqkS2 OOBfxrMMIGNmxp7pPkt6HPnIvGNTo+SnbAdVIm6M3EN1K+BTGrj7/CTJkcT6XSyK nCBL6nbP7zMB1GJfCFGPvlIdW4oYnAfB1Q5YJ9tzYbEZ0t5NWxDKZ45RnM9xQp4Y 2V1zdfALdqmGRKBWgyUcqp1T4/AYRU0+WaQxz7gHw3BPR4QmfVLPRqiiR7OT0Z+P XFotOYD3epVXS1OUyZdLBn5+FXLnRd1uylQ+j8FNfnddr4Nr+tH1J6edK71NMvXG Tj7p5rP5bbgvVkD43ywsVnCI0w+9NS55mH5UP2Y4fSLS6p2tJAw= =yMmO -----END PGP SIGNATURE----- Merge tag 'v6.8-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "API: - Add incremental lskcipher/skcipher processing Algorithms: - Remove SHA1 from drbg - Remove CFB and OFB Drivers: - Add comp high perf mode configuration in hisilicon/zip - Add support for 420xx devices in qat - Add IAA Compression Accelerator driver" * tag 'v6.8-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (172 commits) crypto: iaa - Account for cpu-less numa nodes crypto: scomp - fix req->dst buffer overflow crypto: sahara - add support for crypto_engine crypto: sahara - remove error message for bad aes request size crypto: sahara - remove unnecessary NULL assignments crypto: sahara - remove 'active' flag from sahara_aes_reqctx struct crypto: sahara - use dev_err_probe() crypto: sahara - use devm_clk_get_enabled() crypto: sahara - use BIT() macro crypto: sahara - clean up macro indentation crypto: sahara - do not resize req->src when doing hash operations crypto: sahara - fix processing hash requests with req->nbytes < sg->length crypto: sahara - improve error handling in sahara_sha_process() crypto: sahara - fix wait_for_completion_timeout() error handling crypto: sahara - fix ahash reqsize crypto: sahara - handle zero-length aes requests crypto: skcipher - remove excess kerneldoc members crypto: shash - remove excess kerneldoc members crypto: qat - generate dynamically arbiter mappings crypto: qat - add support for ring pair level telemetry ... |
||
|
Linus Torvalds
|
41daf06ea1 |
linux_kselftest-kunit-6.8-rc1
This KUnit update for Linux 6.8-rc1 consists of:
- a new feature that adds APIs for managing devices introducing
a set of helper functions which allow devices (internally a
struct kunit_device) to be created and managed by KUnit.
These devices will be automatically unregistered on
test exit. These helpers can either use a user-provided
struct device_driver, or have one automatically created and
managed by KUnit. In both cases, the device lives on a new
kunit_bus.
- changes to switch drm/tests to use kunit devices
- several fixes and enhancements to attribute feature
- changes to reorganize deferred action function introducing
KUNIT_DEFINE_ACTION_WRAPPER
- new feature adds ability to run tests after boot using debugfs
- fixes and enhancements to string-stream-test:
- parse ERR_PTR in string_stream_destroy()
- unchecked dereference in bug fix in debugfs_print_results()
- handling errors from alloc_string_stream()
- NULL-dereference bug fix in kunit_init_suite()
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Merge tag 'linux_kselftest-kunit-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull KUnit updates from Shuah Khan:
- a new feature that adds APIs for managing devices introducing a set
of helper functions which allow devices (internally a struct
kunit_device) to be created and managed by KUnit.
These devices will be automatically unregistered on test exit. These
helpers can either use a user-provided struct device_driver, or have
one automatically created and managed by KUnit. In both cases, the
device lives on a new kunit_bus.
- changes to switch drm/tests to use kunit devices
- several fixes and enhancements to attribute feature
- changes to reorganize deferred action function introducing
KUNIT_DEFINE_ACTION_WRAPPER
- new feature adds ability to run tests after boot using debugfs
- fixes and enhancements to string-stream-test:
- parse ERR_PTR in string_stream_destroy()
- unchecked dereference in bug fix in debugfs_print_results()
- handling errors from alloc_string_stream()
- NULL-dereference bug fix in kunit_init_suite()
* tag 'linux_kselftest-kunit-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (27 commits)
kunit: Fix some comments which were mistakenly kerneldoc
kunit: Protect string comparisons against NULL
kunit: Add example of kunit_activate_static_stub() with pointer-to-function
kunit: Allow passing function pointer to kunit_activate_static_stub()
kunit: Fix NULL-dereference in kunit_init_suite() if suite->log is NULL
kunit: Reset test->priv after each param iteration
kunit: Add example for using test->priv
drm/tests: Switch to kunit devices
ASoC: topology: Replace fake root_device with kunit_device in tests
overflow: Replace fake root_device with kunit_device
fortify: test: Use kunit_device
kunit: Add APIs for managing devices
Documentation: Add debugfs docs with run after boot
kunit: add ability to run tests after boot using debugfs
kunit: add is_init test attribute
kunit: add example suite to test init suites
kunit: add KUNIT_INIT_TABLE to init linker section
kunit: move KUNIT_TABLE out of INIT_DATA
kunit: tool: add test for parsing attributes
kunit: tool: fix parsing of test attributes
...
|
||
|
Linus Torvalds
|
bd012f3a5b |
ACPI updates for 6.8-rc1
- Add CSI-2 and DisCo for Imaging support to the ACPI device
enumeration code (Sakari Ailus, Rafael J. Wysocki).
- Adjust the cpufreq thermal reduction algorithm in the ACPI processor
driver for Tegra241 (Srikar Srimath Tirumala, Arnd Bergmann).
- Make acpi_proc_quirk_mwait_check() x86-specific (Rafael J. Wysocki).
- Switch over ACPI to using a threaded interrupt handler for the
SCI (Rafael J. Wysocki).
- Allow ACPI Notify () handlers to run on all CPUs and clean up the
ACPI interface for deferred events processing (Rafael J. Wysocki).
- Switch over the ACPI EC driver to using a threaded handler for the
dedicated IRQ on systems without the EC GPE (Rafael J. Wysocki).
- Adjust code using ACPICA spinlocks and the ACPI EC driver spinlock to
keep local interrupts on (Rafael J. Wysocki).
- Adjust the USB4 _OSC handshake to correctly handle cases in which
certain types of OS control are denied by the platform (Mika
Westerberg).
- Correct and clean up the generic function for parsing ACPI data-only
tables with array structure (Yuntao Wang).
- Modify acpi_dev_uid_match() to support different types of its second
argument and adjust its users accordingly (Raag Jadav).
- Clean up code related to acpi_evaluate_reference() and ACPI device
lists (Rafael J. Wysocki).
- Use generic ACPI helpers for evaluating trip point temperature
objects in the ACPI thermal zone driver (Rafael J. Wysockii, Arnd
Bergmann).
- Add Thermal fast Sampling Period (_TFP) support to the ACPI thermal
zone driver (Jeff Brasen).
- Modify the ACPI LPIT table handling code to avoid u32 multiplication
overflows in state residency computations (Nikita Kiryushin).
- Drop an unused helper function from the ACPI backlight (video) driver
and add a clarifying comment to it (Hans de Goede).
- Update the ACPI backlight driver to avoid using uninitialized memory
in some cases (Nikita Kiryushin).
- Add ACPI backlight quirk for the Colorful X15 AT 23 laptop (Yuluo
Qiu).
- Add support for vendor-defined error types to the ACPI APEI error
injection code (Avadhut Naik).
- Adjust APEI to properly set MF_ACTION_REQUIRED on synchronous memory
failure events, so they are handled differently from the asynchronous
ones (Shuai Xue).
- Fix NULL pointer dereference check in the ACPI extlog driver (Prarit
Bhargava).
- Adjust the ACPI extlog driver to clear the Extended Error Log status
when RAS_CEC handled the error (Tony Luck).
- Add IRQ override quirks for some Infinity laptops and for TongFang
GMxXGxx (David McFarland, Hans de Goede).
- Clean up the ACPI NUMA code and fix it to ensure that fake_pxm is not
the same as one of the real pxm values (Yuntao Wang).
- Fix the fractional clock divider flags in the ACPI LPSS (Intel SoC)
driver so as to prevent miscalculation of the values in the clock
divider (Andy Shevchenko).
- Adjust comments in the ACPI watchdog driver to prevent kernel-doc
from complaining during documentation builds (Randy Dunlap).
- Make the ACPI button driver send wakeup key events to user space in
addition to power button events on systems that can be woken up by
the power button (Ken Xue).
- Adjust pnpacpi_parse_allocated_vendor() to use memcpy() on a full
structure field (Dmitry Antipov).
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Merge tag 'acpi-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"From the new features standpoint, the most significant change here is
the addition of CSI-2 and MIPI DisCo for Imaging support to the ACPI
device enumeration code that will allow MIPI cameras to be enumerated
through the platform firmware on systems using ACPI.
Also significant is the switch-over to threaded interrupt handlers for
the ACPI SCI and the dedicated EC interrupt (on systems where the
former is not used) which essentially allows all ACPI code to run with
local interrupts enabled. That should improve responsiveness
significantly on systems where multiple GPEs are enabled and the
handling of one SCI involves many I/O address space accesses which
previously had to be carried out in one go with disabled interrupts on
the local CPU.
Apart from the above, the ACPI thermal zone driver will use the
Thermal fast Sampling Period (_TFP) object if available, which should
allow temperature changes to be followed more accurately on some
systems, the ACPI Notify () handlers can run on all CPUs (not just on
CPU0), which should generally speed up the processing of events
signaled through the ACPI SCI, and the ACPI power button driver will
trigger wakeup key events via the input subsystem (on systems where it
is a system wakeup device)
In addition to that, there are the usual bunch of fixes and cleanups.
Specifics:
- Add CSI-2 and DisCo for Imaging support to the ACPI device
enumeration code (Sakari Ailus, Rafael J. Wysocki)
- Adjust the cpufreq thermal reduction algorithm in the ACPI
processor driver for Tegra241 (Srikar Srimath Tirumala, Arnd
Bergmann)
- Make acpi_proc_quirk_mwait_check() x86-specific (Rafael J. Wysocki)
- Switch over ACPI to using a threaded interrupt handler for the SCI
(Rafael J. Wysocki)
- Allow ACPI Notify () handlers to run on all CPUs and clean up the
ACPI interface for deferred events processing (Rafael J. Wysocki)
- Switch over the ACPI EC driver to using a threaded handler for the
dedicated IRQ on systems without the EC GPE (Rafael J. Wysocki)
- Adjust code using ACPICA spinlocks and the ACPI EC driver spinlock
to keep local interrupts on (Rafael J. Wysocki)
- Adjust the USB4 _OSC handshake to correctly handle cases in which
certain types of OS control are denied by the platform (Mika
Westerberg)
- Correct and clean up the generic function for parsing ACPI
data-only tables with array structure (Yuntao Wang)
- Modify acpi_dev_uid_match() to support different types of its
second argument and adjust its users accordingly (Raag Jadav)
- Clean up code related to acpi_evaluate_reference() and ACPI device
lists (Rafael J. Wysocki)
- Use generic ACPI helpers for evaluating trip point temperature
objects in the ACPI thermal zone driver (Rafael J. Wysockii, Arnd
Bergmann)
- Add Thermal fast Sampling Period (_TFP) support to the ACPI thermal
zone driver (Jeff Brasen)
- Modify the ACPI LPIT table handling code to avoid u32
multiplication overflows in state residency computations (Nikita
Kiryushin)
- Drop an unused helper function from the ACPI backlight (video)
driver and add a clarifying comment to it (Hans de Goede)
- Update the ACPI backlight driver to avoid using uninitialized
memory in some cases (Nikita Kiryushin)
- Add ACPI backlight quirk for the Colorful X15 AT 23 laptop (Yuluo
Qiu)
- Add support for vendor-defined error types to the ACPI APEI error
injection code (Avadhut Naik)
- Adjust APEI to properly set MF_ACTION_REQUIRED on synchronous
memory failure events, so they are handled differently from the
asynchronous ones (Shuai Xue)
- Fix NULL pointer dereference check in the ACPI extlog driver
(Prarit Bhargava)
- Adjust the ACPI extlog driver to clear the Extended Error Log
status when RAS_CEC handled the error (Tony Luck)
- Add IRQ override quirks for some Infinity laptops and for TongFang
GMxXGxx (David McFarland, Hans de Goede)
- Clean up the ACPI NUMA code and fix it to ensure that fake_pxm is
not the same as one of the real pxm values (Yuntao Wang)
- Fix the fractional clock divider flags in the ACPI LPSS (Intel SoC)
driver so as to prevent miscalculation of the values in the clock
divider (Andy Shevchenko)
- Adjust comments in the ACPI watchdog driver to prevent kernel-doc
from complaining during documentation builds (Randy Dunlap)
- Make the ACPI button driver send wakeup key events to user space in
addition to power button events on systems that can be woken up by
the power button (Ken Xue)
- Adjust pnpacpi_parse_allocated_vendor() to use memcpy() on a full
structure field (Dmitry Antipov)"
* tag 'acpi-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (56 commits)
ACPI: resource: Add Infinity laptops to irq1_edge_low_force_override
ACPI: button: trigger wakeup key events
ACPI: resource: Add another DMI match for the TongFang GMxXGxx
ACPI: EC: Use a spin lock without disabing interrupts
ACPI: EC: Use a threaded handler for dedicated IRQ
ACPI: OSL: Use spin locks without disabling interrupts
ACPI: APEI: set memory failure flags as MF_ACTION_REQUIRED on synchronous events
ACPI: utils: Introduce helper for _DEP list lookup
ACPI: utils: Fix white space in struct acpi_handle_list definition
ACPI: utils: Refine acpi_handle_list_equal() slightly
ACPI: utils: Return bool from acpi_evaluate_reference()
ACPI: utils: Rearrange in acpi_evaluate_reference()
ACPI: arm64: export acpi_arch_thermal_cpufreq_pctg()
ACPI: extlog: Clear Extended Error Log status when RAS_CEC handled the error
ACPI: LPSS: Fix the fractional clock divider flags
ACPI: NUMA: Fix the logic of getting the fake_pxm value
ACPI: NUMA: Optimize the check for the availability of node values
ACPI: NUMA: Remove unnecessary check in acpi_parse_gi_affinity()
ACPI: watchdog: fix kernel-doc warnings
ACPI: extlog: fix NULL pointer dereference check
...
|
||
|
Linus Torvalds
|
9f2a635235 |
Quite a lot of kexec work this time around. Many singleton patches in
many places. The notable patch series are:
- nilfs2 folio conversion from Matthew Wilcox in "nilfs2: Folio
conversions for file paths".
- Additional nilfs2 folio conversion from Ryusuke Konishi in "nilfs2:
Folio conversions for directory paths".
- IA64 remnant removal in Heiko Carstens's "Remove unused code after
IA-64 removal".
- Arnd Bergmann has enabled the -Wmissing-prototypes warning everywhere
in "Treewide: enable -Wmissing-prototypes". This had some followup
fixes:
- Nathan Chancellor has cleaned up the hexagon build in the series
"hexagon: Fix up instances of -Wmissing-prototypes".
- Nathan also addressed some s390 warnings in "s390: A couple of
fixes for -Wmissing-prototypes".
- Arnd Bergmann addresses the same warnings for MIPS in his series
"mips: address -Wmissing-prototypes warnings".
- Baoquan He has made kexec_file operate in a top-down-fitting manner
similar to kexec_load in the series "kexec_file: Load kernel at top of
system RAM if required"
- Baoquan He has also added the self-explanatory "kexec_file: print out
debugging message if required".
- Some checkstack maintenance work from Tiezhu Yang in the series
"Modify some code about checkstack".
- Douglas Anderson has disentangled the watchdog code's logging when
multiple reports are occurring simultaneously. The series is "watchdog:
Better handling of concurrent lockups".
- Yuntao Wang has contributed some maintenance work on the crash code in
"crash: Some cleanups and fixes".
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Merge tag 'mm-nonmm-stable-2024-01-09-10-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
"Quite a lot of kexec work this time around. Many singleton patches in
many places. The notable patch series are:
- nilfs2 folio conversion from Matthew Wilcox in 'nilfs2: Folio
conversions for file paths'.
- Additional nilfs2 folio conversion from Ryusuke Konishi in 'nilfs2:
Folio conversions for directory paths'.
- IA64 remnant removal in Heiko Carstens's 'Remove unused code after
IA-64 removal'.
- Arnd Bergmann has enabled the -Wmissing-prototypes warning
everywhere in 'Treewide: enable -Wmissing-prototypes'. This had
some followup fixes:
- Nathan Chancellor has cleaned up the hexagon build in the series
'hexagon: Fix up instances of -Wmissing-prototypes'.
- Nathan also addressed some s390 warnings in 's390: A couple of
fixes for -Wmissing-prototypes'.
- Arnd Bergmann addresses the same warnings for MIPS in his series
'mips: address -Wmissing-prototypes warnings'.
- Baoquan He has made kexec_file operate in a top-down-fitting manner
similar to kexec_load in the series 'kexec_file: Load kernel at top
of system RAM if required'
- Baoquan He has also added the self-explanatory 'kexec_file: print
out debugging message if required'.
- Some checkstack maintenance work from Tiezhu Yang in the series
'Modify some code about checkstack'.
- Douglas Anderson has disentangled the watchdog code's logging when
multiple reports are occurring simultaneously. The series is
'watchdog: Better handling of concurrent lockups'.
- Yuntao Wang has contributed some maintenance work on the crash code
in 'crash: Some cleanups and fixes'"
* tag 'mm-nonmm-stable-2024-01-09-10-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (157 commits)
crash_core: fix and simplify the logic of crash_exclude_mem_range()
x86/crash: use SZ_1M macro instead of hardcoded value
x86/crash: remove the unused image parameter from prepare_elf_headers()
kdump: remove redundant DEFAULT_CRASH_KERNEL_LOW_SIZE
scripts/decode_stacktrace.sh: strip unexpected CR from lines
watchdog: if panicking and we dumped everything, don't re-enable dumping
watchdog/hardlockup: use printk_cpu_sync_get_irqsave() to serialize reporting
watchdog/softlockup: use printk_cpu_sync_get_irqsave() to serialize reporting
watchdog/hardlockup: adopt softlockup logic avoiding double-dumps
kexec_core: fix the assignment to kimage->control_page
x86/kexec: fix incorrect end address passed to kernel_ident_mapping_init()
lib/trace_readwrite.c:: replace asm-generic/io with linux/io
nilfs2: cpfile: fix some kernel-doc warnings
stacktrace: fix kernel-doc typo
scripts/checkstack.pl: fix no space expression between sp and offset
x86/kexec: fix incorrect argument passed to kexec_dprintk()
x86/kexec: use pr_err() instead of kexec_dprintk() when an error occurs
nilfs2: add missing set_freezable() for freezable kthread
kernel: relay: remove relay_file_splice_read dead code, doesn't work
docs: submit-checklist: remove all of "make namespacecheck"
...
|
||
|
Linus Torvalds
|
fb46e22a9e |
Many singleton patches against the MM code. The patch series which
are included in this merge do the following:
- Peng Zhang has done some mapletree maintainance work in the
series
"maple_tree: add mt_free_one() and mt_attr() helpers"
"Some cleanups of maple tree"
- In the series "mm: use memmap_on_memory semantics for dax/kmem"
Vishal Verma has altered the interworking between memory-hotplug
and dax/kmem so that newly added 'device memory' can more easily
have its memmap placed within that newly added memory.
- Matthew Wilcox continues folio-related work (including a few
fixes) in the patch series
"Add folio_zero_tail() and folio_fill_tail()"
"Make folio_start_writeback return void"
"Fix fault handler's handling of poisoned tail pages"
"Convert aops->error_remove_page to ->error_remove_folio"
"Finish two folio conversions"
"More swap folio conversions"
- Kefeng Wang has also contributed folio-related work in the series
"mm: cleanup and use more folio in page fault"
- Jim Cromie has improved the kmemleak reporting output in the
series "tweak kmemleak report format".
- In the series "stackdepot: allow evicting stack traces" Andrey
Konovalov to permits clients (in this case KASAN) to cause
eviction of no longer needed stack traces.
- Charan Teja Kalla has fixed some accounting issues in the page
allocator's atomic reserve calculations in the series "mm:
page_alloc: fixes for high atomic reserve caluculations".
- Dmitry Rokosov has added to the samples/ dorectory some sample
code for a userspace memcg event listener application. See the
series "samples: introduce cgroup events listeners".
- Some mapletree maintanance work from Liam Howlett in the series
"maple_tree: iterator state changes".
- Nhat Pham has improved zswap's approach to writeback in the
series "workload-specific and memory pressure-driven zswap
writeback".
- DAMON/DAMOS feature and maintenance work from SeongJae Park in
the series
"mm/damon: let users feed and tame/auto-tune DAMOS"
"selftests/damon: add Python-written DAMON functionality tests"
"mm/damon: misc updates for 6.8"
- Yosry Ahmed has improved memcg's stats flushing in the series
"mm: memcg: subtree stats flushing and thresholds".
- In the series "Multi-size THP for anonymous memory" Ryan Roberts
has added a runtime opt-in feature to transparent hugepages which
improves performance by allocating larger chunks of memory during
anonymous page faults.
- Matthew Wilcox has also contributed some cleanup and maintenance
work against eh buffer_head code int he series "More buffer_head
cleanups".
- Suren Baghdasaryan has done work on Andrea Arcangeli's series
"userfaultfd move option". UFFDIO_MOVE permits userspace heap
compaction algorithms to move userspace's pages around rather than
UFFDIO_COPY'a alloc/copy/free.
- Stefan Roesch has developed a "KSM Advisor", in the series
"mm/ksm: Add ksm advisor". This is a governor which tunes KSM's
scanning aggressiveness in response to userspace's current needs.
- Chengming Zhou has optimized zswap's temporary working memory
use in the series "mm/zswap: dstmem reuse optimizations and
cleanups".
- Matthew Wilcox has performed some maintenance work on the
writeback code, both code and within filesystems. The series is
"Clean up the writeback paths".
- Andrey Konovalov has optimized KASAN's handling of alloc and
free stack traces for secondary-level allocators, in the series
"kasan: save mempool stack traces".
- Andrey also performed some KASAN maintenance work in the series
"kasan: assorted clean-ups".
- David Hildenbrand has gone to town on the rmap code. Cleanups,
more pte batching, folio conversions and more. See the series
"mm/rmap: interface overhaul".
- Kinsey Ho has contributed some maintenance work on the MGLRU
code in the series "mm/mglru: Kconfig cleanup".
- Matthew Wilcox has contributed lruvec page accounting code
cleanups in the series "Remove some lruvec page accounting
functions".
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Merge tag 'mm-stable-2024-01-08-15-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"Many singleton patches against the MM code. The patch series which are
included in this merge do the following:
- Peng Zhang has done some mapletree maintainance work in the series
'maple_tree: add mt_free_one() and mt_attr() helpers'
'Some cleanups of maple tree'
- In the series 'mm: use memmap_on_memory semantics for dax/kmem'
Vishal Verma has altered the interworking between memory-hotplug
and dax/kmem so that newly added 'device memory' can more easily
have its memmap placed within that newly added memory.
- Matthew Wilcox continues folio-related work (including a few fixes)
in the patch series
'Add folio_zero_tail() and folio_fill_tail()'
'Make folio_start_writeback return void'
'Fix fault handler's handling of poisoned tail pages'
'Convert aops->error_remove_page to ->error_remove_folio'
'Finish two folio conversions'
'More swap folio conversions'
- Kefeng Wang has also contributed folio-related work in the series
'mm: cleanup and use more folio in page fault'
- Jim Cromie has improved the kmemleak reporting output in the series
'tweak kmemleak report format'.
- In the series 'stackdepot: allow evicting stack traces' Andrey
Konovalov to permits clients (in this case KASAN) to cause eviction
of no longer needed stack traces.
- Charan Teja Kalla has fixed some accounting issues in the page
allocator's atomic reserve calculations in the series 'mm:
page_alloc: fixes for high atomic reserve caluculations'.
- Dmitry Rokosov has added to the samples/ dorectory some sample code
for a userspace memcg event listener application. See the series
'samples: introduce cgroup events listeners'.
- Some mapletree maintanance work from Liam Howlett in the series
'maple_tree: iterator state changes'.
- Nhat Pham has improved zswap's approach to writeback in the series
'workload-specific and memory pressure-driven zswap writeback'.
- DAMON/DAMOS feature and maintenance work from SeongJae Park in the
series
'mm/damon: let users feed and tame/auto-tune DAMOS'
'selftests/damon: add Python-written DAMON functionality tests'
'mm/damon: misc updates for 6.8'
- Yosry Ahmed has improved memcg's stats flushing in the series 'mm:
memcg: subtree stats flushing and thresholds'.
- In the series 'Multi-size THP for anonymous memory' Ryan Roberts
has added a runtime opt-in feature to transparent hugepages which
improves performance by allocating larger chunks of memory during
anonymous page faults.
- Matthew Wilcox has also contributed some cleanup and maintenance
work against eh buffer_head code int he series 'More buffer_head
cleanups'.
- Suren Baghdasaryan has done work on Andrea Arcangeli's series
'userfaultfd move option'. UFFDIO_MOVE permits userspace heap
compaction algorithms to move userspace's pages around rather than
UFFDIO_COPY'a alloc/copy/free.
- Stefan Roesch has developed a 'KSM Advisor', in the series 'mm/ksm:
Add ksm advisor'. This is a governor which tunes KSM's scanning
aggressiveness in response to userspace's current needs.
- Chengming Zhou has optimized zswap's temporary working memory use
in the series 'mm/zswap: dstmem reuse optimizations and cleanups'.
- Matthew Wilcox has performed some maintenance work on the writeback
code, both code and within filesystems. The series is 'Clean up the
writeback paths'.
- Andrey Konovalov has optimized KASAN's handling of alloc and free
stack traces for secondary-level allocators, in the series 'kasan:
save mempool stack traces'.
- Andrey also performed some KASAN maintenance work in the series
'kasan: assorted clean-ups'.
- David Hildenbrand has gone to town on the rmap code. Cleanups, more
pte batching, folio conversions and more. See the series 'mm/rmap:
interface overhaul'.
- Kinsey Ho has contributed some maintenance work on the MGLRU code
in the series 'mm/mglru: Kconfig cleanup'.
- Matthew Wilcox has contributed lruvec page accounting code cleanups
in the series 'Remove some lruvec page accounting functions'"
* tag 'mm-stable-2024-01-08-15-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (361 commits)
mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER
mm, treewide: introduce NR_PAGE_ORDERS
selftests/mm: add separate UFFDIO_MOVE test for PMD splitting
selftests/mm: skip test if application doesn't has root privileges
selftests/mm: conform test to TAP format output
selftests: mm: hugepage-mmap: conform to TAP format output
selftests/mm: gup_test: conform test to TAP format output
mm/selftests: hugepage-mremap: conform test to TAP format output
mm/vmstat: move pgdemote_* out of CONFIG_NUMA_BALANCING
mm: zsmalloc: return -ENOSPC rather than -EINVAL in zs_malloc while size is too large
mm/memcontrol: remove __mod_lruvec_page_state()
mm/khugepaged: use a folio more in collapse_file()
slub: use a folio in __kmalloc_large_node
slub: use folio APIs in free_large_kmalloc()
slub: use alloc_pages_node() in alloc_slab_page()
mm: remove inc/dec lruvec page state functions
mm: ratelimit stat flush from workingset shrinker
kasan: stop leaking stack trace handles
mm/mglru: remove CONFIG_TRANSPARENT_HUGEPAGE
mm/mglru: add dummy pmd_dirty()
...
|
||
|
Linus Torvalds
|
d30e51aa7b |
slab updates for 6.8
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Merge tag 'slab-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab updates from Vlastimil Babka:
- SLUB: delayed freezing of CPU partial slabs (Chengming Zhou)
Freezing is an operation involving double_cmpxchg() that makes a slab
exclusive for a particular CPU. Chengming noticed that we use it also
in situations where we are not yet installing the slab as the CPU
slab, because freezing also indicates that the slab is not on the
shared list. This results in redundant freeze/unfreeze operation and
can be avoided by marking separately the shared list presence by
reusing the PG_workingset flag.
This approach neatly avoids the issues described in
|
||
|
Linus Torvalds
|
ab9517fa9a |
Debugobject changes for v6.8:
- Make tracking object use more robust: it's not safe to access a
tracking object after releasing the hashbucket lock. Create a
persistent copy for debug printouts instead.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'core-debugobjects-2024-01-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull debugobject update from Ingo Molnar:
- Make tracking object use more robust: it's not safe to access a
tracking object after releasing the hashbucket lock. Create a
persistent copy for debug printouts instead.
* tag 'core-debugobjects-2024-01-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
debugobjects: Stop accessing objects after releasing hash bucket lock
|
||
|
Kirill A. Shutemov
|
fd37721803 |
mm, treewide: introduce NR_PAGE_ORDERS
NR_PAGE_ORDERS defines the number of page orders supported by the page allocator, ranging from 0 to MAX_ORDER, MAX_ORDER + 1 in total. NR_PAGE_ORDERS assists in defining arrays of page orders and allows for more natural iteration over them. [kirill.shutemov@linux.intel.com: fixup for kerneldoc warning] Link: https://lkml.kernel.org/r/20240101111512.7empzyifq7kxtzk3@box Link: https://lkml.kernel.org/r/20231228144704.14033-1-kirill.shutemov@linux.intel.com Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
5db8752c3b |
vfs-6.8.iov_iter
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCZZUzBQAKCRCRxhvAZXjc ot+3AQCZw1PBD4azVxFMWH76qwlAGoVIFug4+ogKU/iUa4VLygEA2FJh1vLJw5iI LpgBEIUTPVkwtzinAW94iJJo1Vr7NAI= =p6PB -----END PGP SIGNATURE----- Merge tag 'vfs-6.8.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull vfs iov_iter cleanups from Christian Brauner: "This contains a minor cleanup. The patches drop an unused argument from import_single_range() allowing to replace import_single_range() with import_ubuf() and dropping import_single_range() completely" * tag 'vfs-6.8.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: iov_iter: replace import_single_range() with import_ubuf() iov_iter: remove unused 'iov' argument from import_single_range() |
||
|
Dan Williams
|
80dda9a69a |
Merge branch 'for-6.8/cxl-misc' into for-6.8/cxl
Pick up some miscellaneous fixups for v6.8. |
||
|
Jakub Kicinski
|
e63c1822ac |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/ethernet/broadcom/bnxt/bnxt.c |
||
|
Rafael J. Wysocki
|
8be056a2c0 |
Merge branches 'acpi-osl', 'acpi-bus' and 'acpi-tables'
Merge low-level ACPICA interface changes, an _SB-scope _OSC handshake update and a data-only ACPI tables parsing code update for 6.8-rc1: - Switch over ACPI to using a threaded interrupt handler for the SCI (Rafael J. Wysocki). - Allow ACPI Notify () handlers to run on all CPUs and clean up the ACPI interface for deferred events processing (Rafael J. Wysocki). - Switch over the ACPI EC driver to using a threaded handler for the dedicated IRQ on systems without the EC GPE (Rafael J. Wysocki). - Adjust code using ACPICA spinlocks and the ACPI EC driver spinlock to keep local interrupts on (Rafael J. Wysocki). - Adjust the USB4 _OSC handshake to correctly handle cases in which certain types of OS control are denied by the platform (Mika Westerberg). - Correct and clean up the generic function for parsing ACPI data-only tables with array structure (Yuntao Wang). * acpi-osl: ACPI: EC: Use a spin lock without disabing interrupts ACPI: EC: Use a threaded handler for dedicated IRQ ACPI: OSL: Use spin locks without disabling interrupts ACPI: OSL: Allow Notify () handlers to run on all CPUs ACPI: OSL: Rearrange workqueue selection in acpi_os_execute() ACPI: OSL: Rework error handling in acpi_os_execute() ACPI: OSL: Use a threaded interrupt handler for SCI * acpi-bus: ACPI: Run USB4 _OSC() first with query bit set * acpi-tables: ACPI: tables: Correct and clean up the logic of acpi_parse_entries_array() |
||
|
David Gow
|
539e582a37 |
kunit: Fix some comments which were mistakenly kerneldoc
The KUnit device helpers are documented with kerneldoc in their header
file, but also have short comments over their implementation. These were
mistakenly formatted as kerneldoc comments, even though they're not
valid kerneldoc. It shouldn't cause any serious problems -- this file
isn't included in the docs -- but it could be confusing, and causes
warnings.
Remove the extra '*' so that these aren't treated as kerneldoc.
Fixes:
|
||
|
Richard Fitzgerald
|
5fb1a8c671 |
kunit: Add example of kunit_activate_static_stub() with pointer-to-function
Adds a variant of example_static_stub_test() that shows use of a pointer-to-function with kunit_activate_static_stub(). A const pointer to the add_one() function is declared. This pointer-to-function is passed to kunit_activate_static_stub() and kunit_deactivate_static_stub() instead of passing add_one directly. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Richard Fitzgerald
|
a0b84213f9 |
kunit: Fix NULL-dereference in kunit_init_suite() if suite->log is NULL
suite->log must be checked for NULL before passing it to
string_stream_clear(). This was done in kunit_init_test() but was missing
from kunit_init_suite().
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Fixes: 6d696c4695c5 ("kunit: add ability to run tests after boot using debugfs")
Reviewed-by: Rae Moar <rmoar@google.com>
Acked-by: David Gow <davidgow@google.com>
Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
|
||
|
Tanzir Hasan
|
037d88f0dd |
lib/trace_readwrite.c:: replace asm-generic/io with linux/io
asm-generic/io.h can be replaced with linux/io.h and the file will still build correctly. It is an asm-generic file which should be avoided if possible. Link: https://lkml.kernel.org/r/20231221-tracereadwrite-v1-1-a434f25180c7@google.com Signed-off-by: Tanzir Hasan <tanzirh@google.com> Suggested-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Mathis Marion
|
90ca22513e |
lib: crc_ccitt_false() is identical to crc_itu_t()
crc_ccitt_false() was introduced in commit
|
||
|
Uwe Kleine-König
|
bc09d1dea8 |
lib: add note about process exit message for DEBUG_STACK_USAGE
DEBUG_STACK_USAGE doesn't only have an influence on the output of sysrq-T and sysrq-P, it also enables a message at process exit. See check_stack_usage() in kernel/exit.c where this is implemented. Link: https://lkml.kernel.org/r/20231219182808.210284-2-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Douglas Anderson <dianders@chromium.org> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Kees Cook <keescook@chromium.org> Cc: Marco Elver <elver@google.com> Cc: "Paul E. McKenney" <paulmck@kernel.org> Cc: Pengutronix Kernel Team <kernel@pengutronix.de> Cc: Petr Mladek <pmladek@suse.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Stephen Boyd <sboyd@kernel.org> Cc: Zhaoyang Huang <zhaoyang.huang@unisoc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Andrey Konovalov
|
a914d8d6cf |
lib/stackdepot: add printk_deferred_enter/exit guards
Patch series "lib/stackdepot, kasan: fixes for stack eviction series", v3.
A few fixes for the stack depot eviction series ("stackdepot: allow
evicting stack traces").
This patch (of 5):
Stack depot functions can be called from various contexts that do
allocations, including with console locks taken. At the same time, stack
depot functions might print WARNING's or refcount-related failures.
This can cause a deadlock on console locks.
Add printk_deferred_enter/exit guards to stack depot to avoid this.
Link: https://lkml.kernel.org/r/cover.1703020707.git.andreyknvl@google.com
Link: https://lkml.kernel.org/r/82092f9040d075a161d1264377d51e0bac847e8a.1703020707.git.andreyknvl@google.com
Fixes:
|
||
|
Joel Granados
|
c8a65501d3 |
sysctl: Remove the now superfluous sentinel elements from ctl_table array
This commit comes at the tail end of a greater effort to remove the empty elements at the end of the ctl_table arrays (sentinels) which will reduce the overall build time size of the kernel and run time memory bloat by ~64 bytes per sentinel (further information Link : https://lore.kernel.org/all/ZO5Yx5JFogGi%2FcBo@bombadil.infradead.org/) Remove empty sentinel element from test_table and test_table_unregister. Signed-off-by: Joel Granados <j.granados@samsung.com> Acked-by: Christian Brauner <brauner@kernel.org> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
||
|
Joel Granados
|
777740779e |
sysctl: Add a selftest for handling empty dirs
Basic test to ensure that empty directories can be registered and that they in turn can serve as a base dir for other registrations. Add one test to the sysctl selftest module. It first registers an empty directory under "empty_add" and then uses that as a base to register another empty dir. The sysctl bash script then checks that "empty_add" is present and that there an empty directory within it. Signed-off-by: Joel Granados <j.granados@samsung.com> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
||
|
Linus Torvalds
|
f5837722ff |
11 hotfixes. 7 are cc:stable and the other 4 address post-6.6 issues or
are not considered backporting material. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZYys4AAKCRDdBJ7gKXxA jtmaAQC+o04Ia7IfB8MIqp1p7dNZQo64x/EnGA8YjUnQ8N6IwQD+ImU7dHl9g9Oo ROiiAbtMRBUfeJRsExX/Yzc1DV9E9QM= =ZGcs -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2023-12-27-15-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "11 hotfixes. 7 are cc:stable and the other 4 address post-6.6 issues or are not considered backporting material" * tag 'mm-hotfixes-stable-2023-12-27-15-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mailmap: add an old address for Naoya Horiguchi mm/memory-failure: cast index to loff_t before shifting it mm/memory-failure: check the mapcount of the precise page mm/memory-failure: pass the folio and the page to collect_procs() selftests: secretmem: floor the memory size to the multiple of page_size mm: migrate high-order folios in swap cache correctly maple_tree: do not preallocate nodes for slot stores mm/filemap: avoid buffered read/write race to read inconsistent data kunit: kasan_test: disable fortify string checker on kmalloc_oob_memset kexec: select CRYPTO from KEXEC_FILE instead of depending on it kexec: fix KEXEC_FILE dependencies |
||
|
Kent Overstreet
|
1e2f2d3199 |
Kill sched.h dependency on rcupdate.h
by moving cond_resched_rcu() to rcupdate_wait.h, we can kill another big sched.h dependency. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
||
|
Dave Jiang
|
60e43fe528 |
lib/firmware_table: tables: Add CDAT table parsing support
The CDAT table is very similar to ACPI tables when it comes to sub-table and entry structures. The helper functions can be also used to parse the CDAT table. Add support to the helper functions to deal with an external CDAT table, and also handle the endieness since CDAT can be processed by a BE host. Export a function cdat_table_parse() for CXL driver to parse a CDAT table. In order to minimize ACPICA code changes, __force is being utilized to deal with the case of a big endian (BE) host parsing a CDAT. All CDAT data structure variables are being force casted to __leX as appropriate. Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Len Brown <lenb@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://lore.kernel.org/r/170319615131.2212653.10932785667981494238.stgit@djiang5-mobl3 Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
||
|
Linus Torvalds
|
c0f65a7c11 |
printk changes for 6.8
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||
|
Tianjia Zhang
|
ba3c557420 |
crypto: lib/mpi - Fix unexpected pointer access in mpi_ec_init
When the mpi_ec_ctx structure is initialized, some fields are not
cleared, causing a crash when referencing the field when the
structure was released. Initially, this issue was ignored because
memory for mpi_ec_ctx is allocated with the __GFP_ZERO flag.
For example, this error will be triggered when calculating the
Za value for SM2 separately.
Fixes:
|
||
|
Paolo Abeni
|
56794e5358 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Adjacent changes: drivers/net/ethernet/broadcom/bnxt/bnxt_xdp.c |
||
|
Matthew Wilcox (Oracle)
|
af73483f4e |
ida: Fix crash in ida_free when the bitmap is empty
The IDA usually detects double-frees, but that detection failed to consider the case when there are no nearby IDs allocated and so we have a NULL bitmap rather than simply having a clear bit. Add some tests to the test-suite to be sure we don't inadvertently reintroduce this problem. Unfortunately they're quite noisy so include a message to disregard the warnings. Reported-by: Zhenghan Wang <wzhmmmmm@gmail.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Mark Rutland
|
0df52582e0 |
kcov: remove stale RANDOMIZE_BASE text
The Kconfig help text for CONFIG_KCOV describes that recorded PC values will not be stable across machines or reboots when RANDOMIZE_BASE is selected. This was the case when KCOV was introduced in commit: |
||
|
Borislav Petkov (AMD)
|
ffda655682 |
UBSAN: use the kernel panic message markers
Use the same splat markers as panic does for easier matching by external tools scanning kernel dmesg for splats. Link: https://lkml.kernel.org/r/20231218135339.23209-1-bp@alien8.de Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peng Zhang
|
7e552dcd80 |
maple_tree: avoid checking other gaps after getting the largest gap
The last range stored in maple tree is typically quite large. By checking if it exceeds the sum of the remaining ranges in that node, it is possible to avoid checking all other gaps. Running the maple tree test suite in user mode almost always results in a near 100% hit rate for this optimization. Link: https://lkml.kernel.org/r/20231215074632.82045-1-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Randy Dunlap
|
d5f6057cf0 |
maple_tree: fix typos/spellos etc
Fix typos/grammar and spellos in documentation. Link: https://lkml.kernel.org/r/20231210063839.29967-1-rdunlap@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Andrew Morton
|
5143eecd2a |
lib/maple_tree.c: fix build error due to hotfix alteration
Commit |
||
|
Andrew Morton
|
a721aeac8b | sync mm-stable with mm-hotfixes-stable to pick up depended-upon changes | ||
|
Sidhartha Kumar
|
4249f13c11 |
maple_tree: do not preallocate nodes for slot stores
mas_preallocate() defaults to requesting 1 node for preallocation and then
,depending on the type of store, will update the request variable. There
isn't a check for a slot store type, so slot stores are preallocating the
default 1 node. Slot stores do not require any additional nodes, so add a
check for the slot store case that will bypass node_count_gfp(). Update
the tests to reflect that slot stores do not require allocations.
User visible effects of this bug include increased memory usage from the
unneeded node that was allocated.
Link: https://lkml.kernel.org/r/20231213205058.386589-1-sidhartha.kumar@oracle.com
Fixes:
|
||
|
Jakub Kicinski
|
c49b292d03 |
netdev
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE+soXsSLHKoYyzcli6rmadz2vbToFAmWAz2EACgkQ6rmadz2v bToqrw/9EwroZCc8GEHOKAlb/fzrMvn92rLo0ZW/cGN84QJPnx4zM6Zo0+fgLaaN oqqztwMUwdzGC3uX3FfVXaaLKbJ/MeHeL9BXFZNW8zkRHciw4R7kIBhOdPnHyET7 uT+rQ4xPe1Mt7e9PjepKlSL5mEsxWfBkdUgsdn19Z2Vjdfr9mZMhYWYMJGcfTCD1 TwxHKBPhq5fN3IsshmMBB8IrRp1HStUKb65MgZ4dI22LJXxTsFkx5XMFXcmuqvkH NhKj8jDcPEEh31bYcb6aG2Z4onw5F2lquygjk1Qyy5cyw45m/ipJKAXKdAyvJG+R VZCWOET/9wbRwFSK5wxwihCuKghFiofK52i2PcGtXZh0PCouyZZneSJOKM0yVWKO BvuJBxK4ETRnQyN6ZxhuJiEXG3/YMBBhyR2TX1LntVK9ct/k7qFVzATG49J39/sR SYMbptBRj4a5oMJ1qn0nFVEDFkg0jTnTDNnsEpcz60Ayt6EsJ1XosO5yz2huf861 xgRMTKMseyG1/uV45tQ8ZPzbSPpBxjUi9Dl3coYsIm1a+y6clWUXcarONY5KVrpS CR98DuFgl+E7dXuisd/Kz2p2KxxSPq8nytsmLlgOvrUqhwiXqB+TKN8EHgIapVOt l1A5LrzXFTcGlT9MlaWBqEIy83Bu1nqQqbxrAFOE0k8A5jomXaw= =stU2 -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Alexei Starovoitov says: ==================== pull-request: bpf-next 2023-12-18 This PR is larger than usual and contains changes in various parts of the kernel. The main changes are: 1) Fix kCFI bugs in BPF, from Peter Zijlstra. End result: all forms of indirect calls from BPF into kernel and from kernel into BPF work with CFI enabled. This allows BPF to work with CONFIG_FINEIBT=y. 2) Introduce BPF token object, from Andrii Nakryiko. It adds an ability to delegate a subset of BPF features from privileged daemon (e.g., systemd) through special mount options for userns-bound BPF FS to a trusted unprivileged application. The design accommodates suggestions from Christian Brauner and Paul Moore. Example: $ sudo mkdir -p /sys/fs/bpf/token $ sudo mount -t bpf bpffs /sys/fs/bpf/token \ -o delegate_cmds=prog_load:MAP_CREATE \ -o delegate_progs=kprobe \ -o delegate_attachs=xdp 3) Various verifier improvements and fixes, from Andrii Nakryiko, Andrei Matei. - Complete precision tracking support for register spills - Fix verification of possibly-zero-sized stack accesses - Fix access to uninit stack slots - Track aligned STACK_ZERO cases as imprecise spilled registers. It improves the verifier "instructions processed" metric from single digit to 50-60% for some programs. - Fix verifier retval logic 4) Support for VLAN tag in XDP hints, from Larysa Zaremba. 5) Allocate BPF trampoline via bpf_prog_pack mechanism, from Song Liu. End result: better memory utilization and lower I$ miss for calls to BPF via BPF trampoline. 6) Fix race between BPF prog accessing inner map and parallel delete, from Hou Tao. 7) Add bpf_xdp_get_xfrm_state() kfunc, from Daniel Xu. It allows BPF interact with IPSEC infra. The intent is to support software RSS (via XDP) for the upcoming ipsec pcpu work. Experiments on AWS demonstrate single tunnel pcpu ipsec reaching line rate on 100G ENA nics. 8) Expand bpf_cgrp_storage to support cgroup1 non-attach, from Yafang Shao. 9) BPF file verification via fsverity, from Song Liu. It allows BPF progs get fsverity digest. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (164 commits) bpf: Ensure precise is reset to false in __mark_reg_const_zero() selftests/bpf: Add more uprobe multi fail tests bpf: Fail uprobe multi link with negative offset selftests/bpf: Test the release of map btf s390/bpf: Fix indirect trampoline generation selftests/bpf: Temporarily disable dummy_struct_ops test on s390 x86/cfi,bpf: Fix bpf_exception_cb() signature bpf: Fix dtor CFI cfi: Add CFI_NOSEAL() x86/cfi,bpf: Fix bpf_struct_ops CFI x86/cfi,bpf: Fix bpf_callback_t CFI x86/cfi,bpf: Fix BPF JIT call cfi: Flip headers selftests/bpf: Add test for abnormal cnt during multi-kprobe attachment selftests/bpf: Don't use libbpf_get_error() in kprobe_multi_test selftests/bpf: Add test for abnormal cnt during multi-uprobe attachment bpf: Limit the number of kprobes when attaching program to multiple kprobes bpf: Limit the number of uprobes when attaching program to multiple uprobes bpf: xdp: Register generic_kfunc_set with XDP programs selftests/bpf: utilize string values for delegate_xxx mount options ... ==================== Link: https://lore.kernel.org/r/20231219000520.34178-1-alexei.starovoitov@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Michal Wajdeczko
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342fb97892 |
kunit: Reset test->priv after each param iteration
If we run parameterized test that uses test->priv to prepare some custom data, then value of test->priv will leak to the next param iteration and may be unexpected. This could be easily seen if we promote example_priv_test to parameterized test as then only first test iteration will be successful: $ ./tools/testing/kunit/kunit.py run \ --kunitconfig ./lib/kunit/.kunitconfig *.example_priv* [ ] Starting KUnit Kernel (1/1)... [ ] ============================================================ [ ] =================== example (1 subtest) ==================== [ ] ==================== example_priv_test ==================== [ ] [PASSED] example value 3 [ ] # example_priv_test: initializing [ ] # example_priv_test: ASSERTION FAILED at lib/kunit/kunit-example-test.c:230 [ ] Expected test->priv == ((void *)0), but [ ] test->priv == 0000000060dfe290 [ ] ((void *)0) == 0000000000000000 [ ] # example_priv_test: cleaning up [ ] [FAILED] example value 2 [ ] # example_priv_test: initializing [ ] # example_priv_test: ASSERTION FAILED at lib/kunit/kunit-example-test.c:230 [ ] Expected test->priv == ((void *)0), but [ ] test->priv == 0000000060dfe290 [ ] ((void *)0) == 0000000000000000 [ ] # example_priv_test: cleaning up [ ] [FAILED] example value 1 [ ] # example_priv_test: initializing [ ] # example_priv_test: ASSERTION FAILED at lib/kunit/kunit-example-test.c:230 [ ] Expected test->priv == ((void *)0), but [ ] test->priv == 0000000060dfe290 [ ] ((void *)0) == 0000000000000000 [ ] # example_priv_test: cleaning up [ ] [FAILED] example value 0 [ ] # example_priv_test: initializing [ ] # example_priv_test: cleaning up [ ] # example_priv_test: pass:1 fail:3 skip:0 total:4 [ ] ================ [FAILED] example_priv_test ================ [ ] # example: initializing suite [ ] # module: kunit_example_test [ ] # example: exiting suite [ ] # Totals: pass:1 fail:3 skip:0 total:4 [ ] ===================== [FAILED] example ===================== Fix that by resetting test->priv after each param iteration, in similar way what we did for the test->status. Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: David Gow <davidgow@google.com> Cc: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Michal Wajdeczko
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2b61582acd |
kunit: Add example for using test->priv
In a test->priv field the user can store arbitrary data. Add example how to use this feature in the test code. Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: David Gow <davidgow@google.com> Cc: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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davidgow@google.com
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837018388e |
overflow: Replace fake root_device with kunit_device
Using struct root_device to create fake devices for tests is something of a hack. The new struct kunit_device is meant for this purpose, so use it instead. Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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davidgow@google.com
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46ee8f688e |
fortify: test: Use kunit_device
Using struct root_device to create fake devices for tests is something of a hack. The new struct kunit_device is meant for this purpose, so use it instead. Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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davidgow@google.com
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d03c720e03 |
kunit: Add APIs for managing devices
Tests for drivers often require a struct device to pass to other functions. While it's possible to create these with root_device_register(), or to use something like a platform device, this is both a misuse of those APIs, and can be difficult to clean up after, for example, a failed assertion. Add some KUnit-specific functions for registering and unregistering a struct device: - kunit_device_register() - kunit_device_register_with_driver() - kunit_device_unregister() These helpers allocate a on a 'kunit' bus which will either probe the driver passed in (kunit_device_register_with_driver), or will create a stub driver (kunit_device_register) which is cleaned up on test shutdown. Devices are automatically unregistered on test shutdown, but can be manually unregistered earlier with kunit_device_unregister() in order to, for example, test device release code. Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com> Reviewed-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: David Gow <davidgow@google.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Rae Moar
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c72a870926 |
kunit: add ability to run tests after boot using debugfs
Add functionality to run built-in tests after boot by writing to a debugfs file. Add a new debugfs file labeled "run" for each test suite to use for this purpose. As an example, write to the file using the following: echo "any string" > /sys/kernel/debugfs/kunit/<testsuite>/run This will trigger the test suite to run and will print results to the kernel log. To guard against running tests concurrently with this feature, add a mutex lock around running kunit. This supports the current practice of not allowing tests to be run concurrently on the same kernel. This new functionality could be used to design a parameter injection feature in the future. Fixed up merge conflict duing rebase to Linux 6.7-rc6 Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Rae Moar <rmoar@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Rae Moar
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6c4ea2f48d |
kunit: add is_init test attribute
Add is_init test attribute of type bool. Add to_string, get, and filter methods to lib/kunit/attributes.c. Mark each of the tests in the init section with the is_init=true attribute. Add is_init to the attributes documentation. Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Rae Moar <rmoar@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Rae Moar
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2cf4528157 |
kunit: add example suite to test init suites
Add example_init_test_suite to allow for testing the feature of running test suites marked as init to indicate they use init data and/or functions. This suite should always pass and uses a simple init function. This suite can also be used to test the is_init attribute introduced in the next patch. Signed-off-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Rae Moar
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d81f0d7b8b |
kunit: add KUNIT_INIT_TABLE to init linker section
Add KUNIT_INIT_TABLE to the INIT_DATA linker section. Alter the KUnit macros to create init tests: kunit_test_init_section_suites Update lib/kunit/executor.c to run both the suites in KUNIT_TABLE and KUNIT_INIT_TABLE. Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Rae Moar <rmoar@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Richard Fitzgerald
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1557e89d3a |
kunit: debugfs: Handle errors from alloc_string_stream()
In kunit_debugfs_create_suite() give up and skip creating the debugfs
file if any of the alloc_string_stream() calls return an error or NULL.
Only put a value in the log pointer of kunit_suite and kunit_test if it
is a valid pointer to a log.
This prevents the potential invalid dereference reported by smatch:
lib/kunit/debugfs.c:115 kunit_debugfs_create_suite() error: 'suite->log'
dereferencing possible ERR_PTR()
lib/kunit/debugfs.c:119 kunit_debugfs_create_suite() error: 'test_case->log'
dereferencing possible ERR_PTR()
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Fixes:
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Richard Fitzgerald
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34dfd5bb2e |
kunit: debugfs: Fix unchecked dereference in debugfs_print_results()
Move the call to kunit_suite_has_succeeded() after the check that
the kunit_suite pointer is valid.
This was found by smatch:
lib/kunit/debugfs.c:66 debugfs_print_results() warn: variable
dereferenced before check 'suite' (see line 63)
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Fixes:
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Richard Fitzgerald
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15bf000014 |
kunit: string-stream: Allow ERR_PTR to be passed to string_stream_destroy()
Check the stream pointer passed to string_stream_destroy() for IS_ERR_OR_NULL() instead of only NULL. Whatever alloc_string_stream() returns should be safe to pass to string_stream_destroy(), and that will be an ERR_PTR. It's obviously good practise and generally helpful to also check for NULL pointers so that client cleanup code can call string_stream_destroy() unconditionally - which could include pointers that have never been set to anything and so are NULL. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Richard Fitzgerald
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37f0d37ffc |
kunit: string-stream-test: Avoid cast warning when testing gfp_t flags
Passing a gfp_t to KUNIT_EXPECT_EQ() causes a cast warning:
lib/kunit/string-stream-test.c:73:9: sparse: sparse: incorrect type in
initializer (different base types) expected long long right_value
got restricted gfp_t const __right
Avoid this by testing stream->gfp for the expected value and passing the
boolean result of this comparison to KUNIT_EXPECT_TRUE(), as was already
done a few lines above in string_stream_managed_init_test().
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Fixes:
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David Gow
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56778b49c9 |
kunit: Add a macro to wrap a deferred action function
KUnit's deferred action API accepts a void(*)(void *) function pointer which is called when the test is exited. However, we very frequently want to use existing functions which accept a single pointer, but which may not be of type void*. While this is probably dodgy enough to be on the wrong side of the C standard, it's been often used for similar callbacks, and gcc's -Wcast-function-type seems to ignore cases where the only difference is the type of the argument, assuming it's compatible (i.e., they're both pointers to data). However, clang 16 has introduced -Wcast-function-type-strict, which no longer permits any deviation in function pointer type. This seems to be because it'd break CFI, which validates the type of function calls. This rather ruins our attempts to cast functions to defer them, and leaves us with a few options. The one we've chosen is to implement a macro which will generate a wrapper function which accepts a void*, and casts the argument to the appropriate type. For example, if you were trying to wrap: void foo_close(struct foo *handle); you could use: KUNIT_DEFINE_ACTION_WRAPPER(kunit_action_foo_close, foo_close, struct foo *); This would create a new kunit_action_foo_close() function, of type kunit_action_t, which could be passed into kunit_add_action() and similar functions. In addition to defining this macro, update KUnit and its tests to use it. Link: https://github.com/ClangBuiltLinux/linux/issues/1750 Reviewed-by: Nathan Chancellor <nathan@kernel.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Acked-by: Daniel Vetter <daniel@ffwll.ch> Reviewed-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Jens Axboe
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ae1914174a |
cred: get rid of CONFIG_DEBUG_CREDENTIALS
This code is rarely (never?) enabled by distros, and it hasn't caught anything in decades. Let's kill off this legacy debug code. Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Jakub Kicinski
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8f674972d6 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/ethernet/intel/iavf/iavf_ethtool.c |
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Levi Yun
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d9d9bd979c |
maple_tree: change return type of mas_split_final_node as void.
mas_split_final_node() always returns true and its return value is never checked. Change return type to void. Link: https://lkml.kernel.org/r/20231109160821.16248-2-ppbuk5246@gmail.com Signed-off-by: Levi Yun <ppbuk5246@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peng Zhang
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330018fe69 |
maple_tree: simplify mas_leaf_set_meta()
Now it seems that the incoming 'end' is already pointing to the last item, so we can simplify this function, considering only whether the last slot is being used. This has passed the maple tree test suite. Link: https://lkml.kernel.org/r/20231120070937.35481-6-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peng Zhang
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026b935cd9 |
maple_tree: delete one of the two identical checks
There are two identical checks, delete one of them. Link: https://lkml.kernel.org/r/20231120070937.35481-5-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peng Zhang
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c5e9412138 |
maple_tree: remove an unused parameter for ma_meta_end()
The parameter maple_type is not used, so remove it. Link: https://lkml.kernel.org/r/20231120070937.35481-4-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peng Zhang
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3f05fcdebf |
maple_tree: avoid ascending when mas->min is also the parent's minimum
When the child node is the first child of its parent node, mas->min does not need to be updated. This can reduce the number of ascending times in some cases. Link: https://lkml.kernel.org/r/20231120070937.35481-3-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peng Zhang
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2e783f0c1a |
maple_tree: move the check forward to avoid static check warning
Patch series "Some cleanups of maple tree", v2. These are some small cleanups of maple tree. This patch (of 5): Put the check for gap before its reference to avoid Smatch static check warnings. This is not a bug, it's just a validation program. Even with this change, Smatch may still generate warnings because MT_BUG_ON() doesn't necessarily stop the program. It may require fixing Smatch itself to avoid these warnings. Link: https://lkml.kernel.org/r/20231120070937.35481-1-zhangpeng.00@bytedance.com Link: https://lkml.kernel.org/r/20231120070937.35481-2-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reported-by: Dan Carpenter <dan.carpenter@linaro.org> Closes: http://lists.infradead.org/pipermail/maple-tree/2023-November/003046.html Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Jiapeng Chong
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d1fefa3d22 |
maple_tree: remove unused function
The function are defined in the maple_tree.c file, but not called elsewhere, so delete the unused function. lib/maple_tree.c:689:29: warning: unused function 'mas_pivot'. Link: https://lkml.kernel.org/r/20231027084944.24888-1-jiapeng.chong@linux.alibaba.com Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Reported-by: Abaci Robot <abaci@linux.alibaba.com> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=7064 Acked-by: David Hildenbrand <david@redhat.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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a3c63c8c5d |
maple_tree: mtree_range_walk() clean up
mtree_range_walk() needed to be updated to avoid checking if there was a pivot value. On closer examination, the code could avoid setting min or max in certain scenarios. The commit removes the extra check for pivot[offset] before setting max and only sets max when necessary. It also only sets min if it is necessary by checking offset 0 prior to the loop (as it has always done). The commit also drops a dead node check since the end of the node will return the array size when the last slot is occupied (by a potential reuse in a dead node). The data will be discarded later if the node is marked dead. Benchmarking these changes results in an increase in performance of 5.45% using the BENCH_WALK in the maple tree test code. Link: https://lkml.kernel.org/r/20231101171629.3612299-13-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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24662decdd |
maple_tree: don't find node end in mtree_lookup_walk()
Since the pivot being set is now reliable, the optimized loop no longer needs to find the node end. The redundant check for a dead node can also be avoided as there is no danger of using the wrong pivot since the results will be thrown out in the case of a dead node by the later check. This patch also adds a benchmark test for the function to the maple tree test framework. The benchmark shows an average increase performance of 5.98% over 3 runs with this commit. Link: https://lkml.kernel.org/r/20231101171629.3612299-12-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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0de56e38b3 |
maple_tree: use maple state end for write operations
ma_wr_state was previously tracking the end of the node for writing. Since the implementation of the ma_state end tracking, this is duplicated work. This patch removes the maple write state tracking of the end of the node and uses the maple state end instead. Link: https://lkml.kernel.org/r/20231101171629.3612299-11-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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9a40d45c1f |
maple_tree: remove mas_searchable()
Now that the status of the maple state is outside of the node, the mas_searchable() function can be dropped for easier open-coding of what is going on. Link: https://lkml.kernel.org/r/20231101171629.3612299-10-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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067311d33e |
maple_tree: separate ma_state node from status
The maple tree node is overloaded to keep status as well as the active node. This, unfortunately, results in a re-walk on underflow or overflow. Since the maple state has room, the status can be placed in its own enum in the structure. Once an underflow/overflow is detected, certain modes can restore the status to active and others may need to re-walk just that one node to see the entry. The status being an enum has the benefit of detecting unhandled status in switch statements. [Liam.Howlett@oracle.com: fix comments about MAS_*] Link: https://lkml.kernel.org/r/20231106154124.614247-1-Liam.Howlett@oracle.com [Liam.Howlett@oracle.com: update forking to separate maple state and node] Link: https://lkml.kernel.org/r/20231106154551.615042-1-Liam.Howlett@oracle.com [Liam.Howlett@oracle.com: fix mas_prev() state separation code] Link: https://lkml.kernel.org/r/20231207193319.4025462-1-Liam.Howlett@oracle.com Link: https://lkml.kernel.org/r/20231101171629.3612299-9-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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271f61a8b4 |
maple_tree: clean up inlines for some functions
There are a few functions which were inlined but are somewhat too large to inline, so remove the inline key word. There are also several very small functions which are used in critical code sections which gcc was not inlining, so make this more strict and use __always_line for these functions. Link: https://lkml.kernel.org/r/20231101171629.3612299-8-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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1f41ef12ab |
maple_tree: use cached node end in mas_destroy()
The node end is set during the walk, so use the resulting end instead of re-fetching it. Link: https://lkml.kernel.org/r/20231101171629.3612299-7-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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e9c52d8940 |
maple_tree: use cached node end in mas_next()
When looking for the next entry, don't recalculate the node end as it is now tracked in the maple state. Link: https://lkml.kernel.org/r/20231101171629.3612299-6-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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31c532a8af |
maple_tree: add end of node tracking to the maple state
Analysis of the mas_for_each() iteration showed that there is a significant time spent finding the end of a node. This time can be greatly reduced if the end of the node is cached in the maple state. Care must be taken to update & invalidate as necessary. Link: https://lkml.kernel.org/r/20231101171629.3612299-5-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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f7a5901895 |
maple_tree: make mas_erase() more robust
mas_erase() may not deal correctly with all maple states. Make the function more robust by ensuring the state is in one of the two acceptable states. Link: https://lkml.kernel.org/r/20231101171629.3612299-3-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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37a8ab24d3 |
maple_tree: remove unnecessary default labels from switch statements
Patch series "maple_tree: iterator state changes". These patches have some general cleanup and a change to separate the maple state status tracking from the maple state node. The maple state status change allows for walks to continue from previous places when the status needs to be recorded to make logical sense for the next call to the maple state. For instance, it allows for prev/next to function in a way that better resembles the linked list. It also allows switch statements to be used to detect missed states during compile, and the addition of fast-path "active" state is cleaner as an enum. While making the status change, perf showed some very small (one line) functions that were not inlined even with the inline key word. Making these small functions __always_inline is less expensive according to perf. As part of that change, some inlines have been dropped from larger functions. Perf also showed that the commonly used mas_for_each() iterator was spending a lot of time finding the end of the node. This series introduces caching of the end of the node in the maple state (and updating it during writes). This caching along with the inline changes yielded at 23.25% improvement on the BENCH_MAS_FOR_EACH maple tree test framework benchmark. I've also included a change to mtree_range_walk and mtree_lookup_walk to take advantage of Peng's change [1] to the initial pivot setup. mmtests did not produce any significant gains. [1] https://lore.kernel.org/all/20230711035444.526-1-zhangpeng.00@bytedance.com/T/#u This patch (of 12): Removing the default types from the switch statements will cause compile warnings on missing cases. Link: https://lkml.kernel.org/r/20231101171629.3612299-2-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Heiko Carstens
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18564756ab |
s390/fpu: get rid of MACHINE_HAS_VX
Get rid of MACHINE_HAS_VX and replace it with cpu_has_vx() which is a short readable wrapper for "test_facility(129)". Facility bit 129 is set if the vector facility is present. test_facility() returns also true for all bits which are set in the architecture level set of the cpu that the kernel is compiled for. This means that test_facility(129) is a compile time constant which returns true for z13 and later, since the vector facility bit is part of the z13 kernel ALS. In result the compiled code will have less runtime checks, and less code. Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> |
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Arnd Bergmann
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fd6f52e3fa |
ida: make 'ida_dump' static
Patch series "Treewide: enable -Wmissing-prototypes", v3.
At this point, there are five architectures with a number of known
regressions: alpha, nios2, mips, sh and sparc. In the previous version of
this patch, I had turned off the missing prototype warnings for the 15
architectures that still had issues, but since there are only five left, I
think we can leave the rest to the maintainers (Cc'd here) as well.
The series is also likely to cause occasional build regressions on
linux-next as developers add new code that misses prototypes. Hopefully
this should be resolved by the time the patches make it into a release and
everyone gets the warnings right away.
This patch (of 6):
There is no global declaration for ida_dump() and no other callers, so
make it static to avoid this warning:
lib/test_ida.c:16:6: error: no previous prototype for 'ida_dump'
Link: https://lkml.kernel.org/r/20231123110506.707903-1-arnd@kernel.org
Link: https://lkml.kernel.org/r/20231123110506.707903-2-arnd@kernel.org
Fixes:
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Juntong Deng
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5d4c6ac946 |
kasan: record and report more information
Record and report more information to help us find the cause of the bug and to help us correlate the error with other system events. This patch adds recording and showing CPU number and timestamp at allocation and free (controlled by CONFIG_KASAN_EXTRA_INFO). The timestamps in the report use the same format and source as printk. Error occurrence timestamp is already implicit in the printk log, and CPU number is already shown by dump_stack_lvl, so there is no need to add it. In order to record CPU number and timestamp at allocation and free, corresponding members need to be added to the relevant data structures, which will lead to increased memory consumption. In Generic KASAN, members are added to struct kasan_track. Since in most cases, alloc meta is stored in the redzone and free meta is stored in the object or the redzone, memory consumption will not increase much. In SW_TAGS KASAN and HW_TAGS KASAN, members are added to struct kasan_stack_ring_entry. Memory consumption increases as the size of struct kasan_stack_ring_entry increases (this part of the memory is allocated by memblock), but since this is configurable, it is up to the user to choose. Link: https://lkml.kernel.org/r/VI1P193MB0752BD991325D10E4AB1913599BDA@VI1P193MB0752.EURP193.PROD.OUTLOOK.COM Signed-off-by: Juntong Deng <juntong.deng@outlook.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
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bd9d9624b7 |
lib/stackdepot: adjust DEPOT_POOLS_CAP for KMSAN
KMSAN is frequently used in fuzzing scenarios and thus saves a lot of stack traces. As KMSAN does not support evicting stack traces from the stack depot, the stack depot capacity might be reached quickly with large stack records. Adjust the maximum number of stack depot pools for this case. The average size of a stack trace saved into the stack depot is ~16 frames. Thus, adjust the maximum pools number accordingly to keep the maximum number of stack traces that can be saved into the stack depot similar to the one that was allowed before the stack trace eviction changes. Link: https://lkml.kernel.org/r/301a115cf7ce8ddb42ef6de9151c2bb76ba728fc.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
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108be8def4 |
lib/stackdepot: allow users to evict stack traces
Add stack_depot_put, a function that decrements the reference counter on a stack record and removes it from the stack depot once the counter reaches 0. Internally, when removing a stack record, the function unlinks it from the hash table bucket and returns to the freelist. With this change, the users of stack depot can call stack_depot_put when keeping a stack trace in the stack depot is not needed anymore. This allows avoiding polluting the stack depot with irrelevant stack traces and thus have more space to store the relevant ones before the stack depot reaches its capacity. Link: https://lkml.kernel.org/r/1d1ad5692ee43d4fc2b3fd9d221331d30b36123f.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
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410b764f89 |
lib/stackdepot: add refcount for records
Add a reference counter for how many times a stack records has been added to stack depot. Add a new STACK_DEPOT_FLAG_GET flag to stack_depot_save_flags that instructs the stack depot to increment the refcount. Do not yet decrement the refcount; this is implemented in one of the following patches. Do not yet enable any users to use the flag to avoid overflowing the refcount. This is preparatory patch for implementing the eviction of stack records from the stack depot. Link: https://lkml.kernel.org/r/a3fc14a2359d019d2a008d4ff8b46a665371ffee.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
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022012dcf4 |
lib/stackdepot, kasan: add flags to __stack_depot_save and rename
Change the bool can_alloc argument of __stack_depot_save to a u32 argument that accepts a set of flags. The following patch will add another flag to stack_depot_save_flags besides the existing STACK_DEPOT_FLAG_CAN_ALLOC. Also rename the function to stack_depot_save_flags, as __stack_depot_save is a cryptic name, Link: https://lkml.kernel.org/r/645fa15239621eebbd3a10331e5864b718839512.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
|
4805180bc1 |
lib/stackdepot: use list_head for stack record links
Switch stack_record to use list_head for links in the hash table and in the freelist. This will allow removing entries from the hash table buckets. This is preparatory patch for implementing the eviction of stack records from the stack depot. Link: https://lkml.kernel.org/r/4787d9a584cd33433d9ee1846b17fa3d3e1987ad.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
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a6cd957021 |
lib/stackdepot: use read/write lock
Currently, stack depot uses the following locking scheme: 1. Lock-free accesses when looking up a stack record, which allows to have multiple users to look up records in parallel; 2. Spinlock for protecting the stack depot pools and the hash table when adding a new record. For implementing the eviction of stack traces from stack depot, the lock-free approach is not going to work anymore, as we will need to be able to also remove records from the hash table. Convert the spinlock into a read/write lock, and drop the atomic accesses, as they are no longer required. Looking up stack traces is now protected by the read lock and adding new records - by the write lock. One of the following patches will add a new function for evicting stack records, which will be protected by the write lock as well. With this change, multiple users can still look up records in parallel. This is preparatory patch for implementing the eviction of stack records from the stack depot. Link: https://lkml.kernel.org/r/9f81ffcc4bb422ebb6326a65a770bf1918634cbb.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
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b29d318858 |
lib/stackdepot: store free stack records in a freelist
Instead of using the global pool_offset variable to find a free slot when storing a new stack record, mainlain a freelist of free slots within the allocated stack pools. A global next_stack variable is used as the head of the freelist, and the next field in the stack_record struct is reused as freelist link (when the record is not in the freelist, this field is used as a link in the hash table). This is preparatory patch for implementing the eviction of stack records from the stack depot. Link: https://lkml.kernel.org/r/b9e4c79955c2121b69301778643b203d3fb09ccc.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
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a5d21f7171 |
lib/stackdepot: store next pool pointer in new_pool
Instead of using the last pointer in stack_pools for storing the pointer to a new pool (which does not yet store any stack records), use a new new_pool variable. This a purely code readability change: it seems more logical to store the pointer to a pool with a special meaning in a dedicated variable. Link: https://lkml.kernel.org/r/448bc18296c16bef95cb3167697be6583dcc8ce3.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
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b6a353d3eb |
lib/stackdepot: rename next_pool_required to new_pool_required
Rename next_pool_required to new_pool_required. This a purely code readability change: the following patch will change stack depot to store the pointer to the new pool in a separate variable, and "new" seems like a more logical name. Link: https://lkml.kernel.org/r/fd7cd6c6eb250c13ec5d2009d75bb4ddd1470db9.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
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94b7d32870 |
lib/stackdepot: rework helpers for depot_alloc_stack
Split code in depot_alloc_stack and depot_init_pool into 3 functions: 1. depot_keep_next_pool that keeps preallocated memory for the next pool if required. 2. depot_update_pools that moves on to the next pool if there's no space left in the current pool, uses preallocated memory for the new current pool if required, and calls depot_keep_next_pool otherwise. 3. depot_alloc_stack that calls depot_update_pools and then allocates a stack record as before. This makes it somewhat easier to follow the logic of depot_alloc_stack and also serves as a preparation for implementing the eviction of stack records from the stack depot. Link: https://lkml.kernel.org/r/71fb144d42b701fcb46708d7f4be6801a4a8270e.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
|
fcccc41ecb |
lib/stackdepot: fix and clean-up atomic annotations
Drop smp_load_acquire from next_pool_required in depot_init_pool, as both depot_init_pool and the all smp_store_release's to this variable are executed under the stack depot lock. Also simplify and clean up comments accompanying the use of atomic accesses in the stack depot code. Link: https://lkml.kernel.org/r/c118ef044d8db80248d9e1f14592c72e8429e9d9.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
|
fc60e0caa9 |
lib/stackdepot: use fixed-sized slots for stack records
Instead of storing stack records in stack depot pools one right after another, use fixed-sized slots. Add a new Kconfig option STACKDEPOT_MAX_FRAMES that allows to select the size of the slot in frames. Use 64 as the default value, which is the maximum stack trace size both KASAN and KMSAN use right now. Also add descriptions for other stack depot Kconfig options. This is preparatory patch for implementing the eviction of stack records from the stack depot. Link: https://lkml.kernel.org/r/dce7d030a99ff61022509665187fac45b0827298.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
|
83130ab2d8 |
lib/stackdepot: add depot_fetch_stack helper
Add a helper depot_fetch_stack function that fetches the pointer to a stack record. With this change, all static depot_* functions now operate on stack pools and the exported stack_depot_* functions operate on the hash table. Link: https://lkml.kernel.org/r/170d8c202f29dc8e3d5491ee074d1e9e029a46db.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
|
5f9ce55e02 |
lib/stackdepot: drop valid bit from handles
Stack depot doesn't use the valid bit in handles in any way, so drop it. Link: https://lkml.kernel.org/r/34969bba2ca6e012c6ad071767197dee64dc5723.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
|
603c000c11 |
lib/stackdepot: simplify __stack_depot_save
The retval local variable in __stack_depot_save has the union type handle_parts, but the function never uses anything but the union's handle field. Define retval simply as depot_stack_handle_t to simplify the code. Link: https://lkml.kernel.org/r/3b0763c8057a1cf2f200ff250a5f9580ee36a28c.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
|
0c5d44a814 |
lib/stackdepot: check disabled flag when fetching
Do not try fetching a stack trace from the stack depot if the stack_depot_disabled flag is enabled. Link: https://lkml.kernel.org/r/c3bfa3b7ab00b2e48ab75a3fbb9c67555777cb08.1700502145.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Marco Elver <elver@google.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrey Konovalov
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4d07a03723 |
lib/stackdepot: print disabled message only if truly disabled
Patch series "stackdepot: allow evicting stack traces", v4.
Currently, the stack depot grows indefinitely until it reaches its
capacity. Once that happens, the stack depot stops saving new stack
traces.
This creates a problem for using the stack depot for in-field testing and
in production.
For such uses, an ideal stack trace storage should:
1. Allow saving fresh stack traces on systems with a large uptime while
limiting the amount of memory used to store the traces;
2. Have a low performance impact.
Implementing #1 in the stack depot is impossible with the current
keep-forever approach. This series targets to address that. Issue #2 is
left to be addressed in a future series.
This series changes the stack depot implementation to allow evicting
unneeded stack traces from the stack depot. The users of the stack depot
can do that via new stack_depot_save_flags(STACK_DEPOT_FLAG_GET) and
stack_depot_put APIs.
Internal changes to the stack depot code include:
1. Storing stack traces in fixed-frame-sized slots (vs precisely-sized
slots in the current implementation); the slot size is controlled via
CONFIG_STACKDEPOT_MAX_FRAMES (default: 64 frames);
2. Keeping available slots in a freelist (vs keeping an offset to the next
free slot);
3. Using a read/write lock for synchronization (vs a lock-free approach
combined with a spinlock).
This series also integrates the eviction functionality into KASAN: the
tag-based modes evict stack traces when the corresponding entry leaves the
stack ring, and Generic KASAN evicts stack traces for objects once those
leave the quarantine.
With KASAN, despite wasting some space on rounding up the size of each
stack record, the total memory consumed by stack depot gets saturated due
to the eviction of irrelevant stack traces from the stack depot.
With the tag-based KASAN modes, the average total amount of memory used
for stack traces becomes ~0.5 MB (with the current default stack ring size
of 32k entries and the default CONFIG_STACKDEPOT_MAX_FRAMES of 64). With
Generic KASAN, the stack traces take up ~1 MB per 1 GB of RAM (as the
quarantine's size depends on the amount of RAM).
However, with KMSAN, the stack depot ends up using ~4x more memory per a
stack trace than before. Thus, for KMSAN, the stack depot capacity is
increased accordingly. KMSAN uses a lot of RAM for shadow memory anyway,
so the increased stack depot memory usage will not make a significant
difference.
Other users of the stack depot do not save stack traces as often as KASAN
and KMSAN. Thus, the increased memory usage is taken as an acceptable
trade-off. In the future, these other users can take advantage of the
eviction API to limit the memory waste.
There is no measurable boot time performance impact of these changes for
KASAN on x86-64. I haven't done any tests for arm64 modes (the stack
depot without performance optimizations is not suitable for intended use
of those anyway), but I expect a similar result. Obtaining and copying
stack trace frames when saving them into stack depot is what takes the
most time.
This series does not yet provide a way to configure the maximum size of
the stack depot externally (e.g. via a command-line parameter). This
will be added in a separate series, possibly together with the performance
improvement changes.
This patch (of 22):
Currently, if stack_depot_disable=off is passed to the kernel command-line
after stack_depot_disable=on, stack depot prints a message that it is
disabled, while it is actually enabled.
Fix this by moving printing the disabled message to
stack_depot_early_init. Place it before the
__stack_depot_early_init_requested check, so that the message is printed
even if early stack depot init has not been requested.
Also drop the stack_table = NULL assignment from disable_stack_depot, as
stack_table is NULL by default.
Link: https://lkml.kernel.org/r/cover.1700502145.git.andreyknvl@google.com
Link: https://lkml.kernel.org/r/73a25c5fff29f3357cd7a9330e85e09bc8da2cbe.1700502145.git.andreyknvl@google.com
Fixes:
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Paul Heidekrüger
|
83a6fdd6c2 |
kasan: default to inline instrumentation
KASan inline instrumentation can yield up to a 2x performance gain at the cost of a larger binary. Make inline instrumentation the default, as suggested in the bug report below. When an architecture does not support inline instrumentation, it should set ARCH_DISABLE_KASAN_INLINE, as done by PowerPC, for instance. Link: https://lkml.kernel.org/r/20231109155101.186028-1-paul.heidekrueger@tum.de Signed-off-by: Paul Heidekrüger <paul.heidekrueger@tum.de> Reported-by: Andrey Konovalov <andreyknvl@gmail.com> Reviewed-by: Marco Elver <elver@google.com> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=203495 Acked-by: Andrey Konovalov <andreyknvl@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peng Zhang
|
8e50d32c7a |
maple_tree: preserve the tree attributes when destroying maple tree
When destroying maple tree, preserve its attributes and then turn it into an empty tree. This allows it to be reused without needing to be reinitialized. Link: https://lkml.kernel.org/r/20231027033845.90608-10-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Mike Christie <michael.christie@oracle.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peng Zhang
|
446e1867e6 |
maple_tree: update check_forking() and bench_forking()
Updated check_forking() and bench_forking() to use __mt_dup() to duplicate maple tree. Link: https://lkml.kernel.org/r/20231027033845.90608-9-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Mike Christie <michael.christie@oracle.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peng Zhang
|
f670fa1caa |
maple_tree: skip other tests when BENCH is enabled
Skip other tests when BENCH is enabled so that performance can be measured in user space. Link: https://lkml.kernel.org/r/20231027033845.90608-8-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Mike Christie <michael.christie@oracle.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peng Zhang
|
fd32e4e9b7 |
maple_tree: introduce interfaces __mt_dup() and mtree_dup()
Introduce interfaces __mt_dup() and mtree_dup(), which are used to duplicate a maple tree. They duplicate a maple tree in Depth-First Search (DFS) pre-order traversal. It uses memcopy() to copy nodes in the source tree and allocate new child nodes in non-leaf nodes. The new node is exactly the same as the source node except for all the addresses stored in it. It will be faster than traversing all elements in the source tree and inserting them one by one into the new tree. The time complexity of these two functions is O(n). The difference between __mt_dup() and mtree_dup() is that mtree_dup() handles locks internally. Analysis of the average time complexity of this algorithm: For simplicity, let's assume that the maximum branching factor of all non-leaf nodes is 16 (in allocation mode, it is 10), and the tree is a full tree. Under the given conditions, if there is a maple tree with n elements, the number of its leaves is n/16. From bottom to top, the number of nodes in each level is 1/16 of the number of nodes in the level below. So the total number of nodes in the entire tree is given by the sum of n/16 + n/16^2 + n/16^3 + ... + 1. This is a geometric series, and it has log(n) terms with base 16. According to the formula for the sum of a geometric series, the sum of this series can be calculated as (n-1)/15. Each node has only one parent node pointer, which can be considered as an edge. In total, there are (n-1)/15-1 edges. This algorithm consists of two operations: 1. Traversing all nodes in DFS order. 2. For each node, making a copy and performing necessary modifications to create a new node. For the first part, DFS traversal will visit each edge twice. Let T(ascend) represent the cost of taking one step downwards, and T(descend) represent the cost of taking one step upwards. And both of them are constants (although mas_ascend() may not be, as it contains a loop, but here we ignore it and treat it as a constant). So the time spent on the first part can be represented as ((n-1)/15-1) * (T(ascend) + T(descend)). For the second part, each node will be copied, and the cost of copying a node is denoted as T(copy_node). For each non-leaf node, it is necessary to reallocate all child nodes, and the cost of this operation is denoted as T(dup_alloc). The behavior behind memory allocation is complex and not specific to the maple tree operation. Here, we assume that the time required for a single allocation is constant. Since the size of a node is fixed, both of these symbols are also constants. We can calculate that the time spent on the second part is ((n-1)/15) * T(copy_node) + ((n-1)/15 - n/16) * T(dup_alloc). Adding both parts together, the total time spent by the algorithm can be represented as: ((n-1)/15) * (T(ascend) + T(descend) + T(copy_node) + T(dup_alloc)) - n/16 * T(dup_alloc) - (T(ascend) + T(descend)) Let C1 = T(ascend) + T(descend) + T(copy_node) + T(dup_alloc) Let C2 = T(dup_alloc) Let C3 = T(ascend) + T(descend) Finally, the expression can be simplified as: ((16 * C1 - 15 * C2) / (15 * 16)) * n - (C1 / 15 + C3). This is a linear function, so the average time complexity is O(n). Link: https://lkml.kernel.org/r/20231027033845.90608-4-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Suggested-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Mike Christie <michael.christie@oracle.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peng Zhang
|
4f2267b58a |
maple_tree: add mt_free_one() and mt_attr() helpers
Patch series "Introduce __mt_dup() to improve the performance of fork()", v7.
This series introduces __mt_dup() to improve the performance of fork().
During the duplication process of mmap, all VMAs are traversed and
inserted one by one into the new maple tree, causing the maple tree to be
rebalanced multiple times. Balancing the maple tree is a costly
operation. To duplicate VMAs more efficiently, mtree_dup() and __mt_dup()
are introduced for the maple tree. They can efficiently duplicate a maple
tree.
Here are some algorithmic details about {mtree,__mt}_dup(). We perform a
DFS pre-order traversal of all nodes in the source maple tree. During
this process, we fully copy the nodes from the source tree to the new
tree. This involves memory allocation, and when encountering a new node,
if it is a non-leaf node, all its child nodes are allocated at once.
This idea was originally from Liam R. Howlett's Maple Tree Work email,
and I added some of my own ideas to implement it. Some previous
discussions can be found in [1]. For a more detailed analysis of the
algorithm, please refer to the logs for patch [3/10] and patch [10/10].
There is a "spawn" in byte-unixbench[2], which can be used to test the
performance of fork(). I modified it slightly to make it work with
different number of VMAs.
Below are the test results. The first row shows the number of VMAs. The
second and third rows show the number of fork() calls per ten seconds,
corresponding to next-20231006 and the this patchset, respectively. The
test results were obtained with CPU binding to avoid scheduler load
balancing that could cause unstable results. There are still some
fluctuations in the test results, but at least they are better than the
original performance.
21 121 221 421 821 1621 3221 6421 12821 25621 51221
112100 76261 54227 34035 20195 11112 6017 3161 1606 802 393
114558 83067 65008 45824 28751 16072 8922 4747 2436 1233 599
2.19% 8.92% 19.88% 34.64% 42.37% 44.64% 48.28% 50.17% 51.68% 53.74% 52.42%
Thanks to Liam and Matthew for the review.
This patch (of 10):
Add two helpers:
1. mt_free_one(), used to free a maple node.
2. mt_attr(), used to obtain the attributes of maple tree.
Link: https://lkml.kernel.org/r/20231027033845.90608-1-zhangpeng.00@bytedance.com
Link: https://lkml.kernel.org/r/20231027033845.90608-2-zhangpeng.00@bytedance.com
Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Mike Christie <michael.christie@oracle.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Tiezhu Yang
|
5181dc08f7 |
test_bpf: Rename second ALU64_SMOD_X to ALU64_SMOD_K
Currently, there are two test cases with same name
"ALU64_SMOD_X: -7 % 2 = -1", the first one is right,
the second one should be ALU64_SMOD_K because its
code is BPF_ALU64 | BPF_MOD | BPF_K.
Before:
test_bpf: #170 ALU64_SMOD_X: -7 % 2 = -1 jited:1 4 PASS
test_bpf: #171 ALU64_SMOD_X: -7 % 2 = -1 jited:1 4 PASS
After:
test_bpf: #170 ALU64_SMOD_X: -7 % 2 = -1 jited:1 4 PASS
test_bpf: #171 ALU64_SMOD_K: -7 % 2 = -1 jited:1 4 PASS
Fixes:
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Linus Torvalds
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8e819a7623 |
31 hotfixes. 10 of these address pre-6.6 issues and are marked cc:stable.
The remainder address post-6.6 issues or aren't considered serious enough to justify backporting. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZXKEfwAKCRDdBJ7gKXxA jlRpAQCiAp1nSqIz/fOKTzoQRaTDXU/m+C+6ZAXdKLDfvQBhpwEAnxxjZ8IgF+8Z Klz/GirHX5w5o7jE2wb8iObo1nR75Qo= =omRq -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2023-12-07-18-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "31 hotfixes. Ten of these address pre-6.6 issues and are marked cc:stable. The remainder address post-6.6 issues or aren't considered serious enough to justify backporting" * tag 'mm-hotfixes-stable-2023-12-07-18-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (31 commits) mm/madvise: add cond_resched() in madvise_cold_or_pageout_pte_range() nilfs2: prevent WARNING in nilfs_sufile_set_segment_usage() mm/hugetlb: have CONFIG_HUGETLB_PAGE select CONFIG_XARRAY_MULTI scripts/gdb: fix lx-device-list-bus and lx-device-list-class MAINTAINERS: drop Antti Palosaari highmem: fix a memory copy problem in memcpy_from_folio nilfs2: fix missing error check for sb_set_blocksize call kernel/Kconfig.kexec: drop select of KEXEC for CRASH_DUMP units: add missing header drivers/base/cpu: crash data showing should depends on KEXEC_CORE mm/damon/sysfs-schemes: add timeout for update_schemes_tried_regions scripts/gdb/tasks: fix lx-ps command error mm/Kconfig: make userfaultfd a menuconfig selftests/mm: prevent duplicate runs caused by TEST_GEN_PROGS mm/damon/core: copy nr_accesses when splitting region lib/group_cpus.c: avoid acquiring cpu hotplug lock in group_cpus_evenly checkstack: fix printed address mm/memory_hotplug: fix error handling in add_memory_resource() mm/memory_hotplug: add missing mem_hotplug_lock .mailmap: add a new address mapping for Chester Lin ... |
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Jakub Kicinski
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2483e7f04c |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/ethernet/stmicro/stmmac/dwmac5.c drivers/net/ethernet/stmicro/stmmac/dwmac5.h drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c drivers/net/ethernet/stmicro/stmmac/hwif.h |
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Andrew Morton
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0c92218f4e | Merge branch 'master' into mm-hotfixes-stable | ||
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Ming Lei
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0263f92fad |
lib/group_cpus.c: avoid acquiring cpu hotplug lock in group_cpus_evenly
group_cpus_evenly() could be part of storage driver's error handler, such as nvme driver, when may happen during CPU hotplug, in which storage queue has to drain its pending IOs because all CPUs associated with the queue are offline and the queue is becoming inactive. And handling IO needs error handler to provide forward progress. Then deadlock is caused: 1) inside CPU hotplug handler, CPU hotplug lock is held, and blk-mq's handler is waiting for inflight IO 2) error handler is waiting for CPU hotplug lock 3) inflight IO can't be completed in blk-mq's CPU hotplug handler because error handling can't provide forward progress. Solve the deadlock by not holding CPU hotplug lock in group_cpus_evenly(), in which two stage spreads are taken: 1) the 1st stage is over all present CPUs; 2) the end stage is over all other CPUs. Turns out the two stage spread just needs consistent 'cpu_present_mask', and remove the CPU hotplug lock by storing it into one local cache. This way doesn't change correctness, because all CPUs are still covered. Link: https://lkml.kernel.org/r/20231120083559.285174-1-ming.lei@redhat.com Signed-off-by: Ming Lei <ming.lei@redhat.com> Reported-by: Yi Zhang <yi.zhang@redhat.com> Reported-by: Guangwu Zhang <guazhang@redhat.com> Tested-by: Guangwu Zhang <guazhang@redhat.com> Reviewed-by: Chengming Zhou <zhouchengming@bytedance.com> Reviewed-by: Jens Axboe <axboe@kernel.dk> Cc: Keith Busch <kbusch@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Yuntao Wang
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4b3805daaa |
ACPI: tables: Correct and clean up the logic of acpi_parse_entries_array()
The original intention of acpi_parse_entries_array() is to return the number of all matching entries on success. This number may be greater than the value of the max_entries parameter. When this happens, the function will output a warning message, indicating that `count - max_entries` matching entries remain unprocessed and have been ignored. However, commit |
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Herve Codina
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5c47251e8c |
lib/vsprintf: Fix %pfwf when current node refcount == 0
A refcount issue can appeared in __fwnode_link_del() due to the
pr_debug() call:
WARNING: CPU: 0 PID: 901 at lib/refcount.c:25 refcount_warn_saturate+0xe5/0x110
Call Trace:
<TASK>
...
of_node_get+0x1e/0x30
of_fwnode_get+0x28/0x40
fwnode_full_name_string+0x34/0x90
fwnode_string+0xdb/0x140
...
vsnprintf+0x17b/0x630
...
__fwnode_link_del+0x25/0xa0
fwnode_links_purge+0x39/0xb0
of_node_release+0xd9/0x180
...
Indeed, an fwnode (of_node) is being destroyed and so, of_node_release()
is called because the of_node refcount reached 0.
From of_node_release() several function calls are done and lead to
a pr_debug() calls with %pfwf to print the fwnode full name.
The issue is not present if we change %pfwf to %pfwP.
To print the full name, %pfwf iterates over the current node and its
parents and obtain/drop a reference to all nodes involved.
In order to allow to print the full name (%pfwf) of a node while it is
being destroyed, do not obtain/drop a reference to this current node.
Fixes:
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Jens Axboe
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9fd7874c0e
|
iov_iter: replace import_single_range() with import_ubuf()
With the removal of the 'iov' argument to import_single_range(), the two functions are now fully identical. Convert the import_single_range() callers to import_ubuf(), and remove the former fully. Signed-off-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/r/20231204174827.1258875-3-axboe@kernel.dk Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Jens Axboe
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6ac805d138
|
iov_iter: remove unused 'iov' argument from import_single_range()
It is entirely unused, just get rid of it. Signed-off-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/r/20231204174827.1258875-2-axboe@kernel.dk Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Vlastimil Babka
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2a19be61a6 |
mm/slab: remove CONFIG_SLAB from all Kconfig and Makefile
Remove CONFIG_SLAB, CONFIG_DEBUG_SLAB, CONFIG_SLAB_DEPRECATED and everything in Kconfig files and mm/Makefile that depends on those. Since SLUB is the only remaining allocator, remove the allocator choice, make CONFIG_SLUB a "def_bool y" for now and remove all explicit dependencies on SLUB or SLAB as it's now always enabled. Make every option's verbose name and description refer to "the slab allocator" without refering to the specific implementation. Do not rename the CONFIG_ option names yet. Everything under #ifdef CONFIG_SLAB, and mm/slab.c is now dead code, all code under #ifdef CONFIG_SLUB is now always compiled. Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Christoph Lameter <cl@linux.com> Acked-by: David Rientjes <rientjes@google.com> Tested-by: David Rientjes <rientjes@google.com> Reviewed-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Tested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Signed-off-by: Vlastimil Babka <vbabka@suse.cz> |
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Linus Torvalds
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669fc83452 |
Probes fixes for v6.7-r3:
- objpool: Fix objpool overrun case on memory/cache access delay especially on the big.LITTLE SoC. The objpool uses a copy of object slot index internal loop, but the slot index can be changed on another processor in parallel. In that case, the difference of 'head' local copy and the 'slot->last' index will be bigger than local slot size. In that case, we need to re-read the slot::head to update it. - kretprobe: Fix to use appropriate rcu API for kretprobe holder. Since kretprobe_holder::rp is RCU managed, it should use rcu_assign_pointer() and rcu_dereference_check() correctly. Also adding __rcu tag for finding wrong usage by sparse. - rethook: Fix to use appropriate rcu API for rethook::handler. The same as kretprobe, rethook::handler is RCU managed and it should use rcu_assign_pointer() and rcu_dereference_check(). This also adds __rcu tag for finding wrong usage by sparse. -----BEGIN PGP SIGNATURE----- iQFPBAABCgA5FiEEh7BulGwFlgAOi5DV2/sHvwUrPxsFAmVpfBobHG1hc2FtaS5o aXJhbWF0c3VAZ21haWwuY29tAAoJENv7B78FKz8bNyMIAJSLICKQNuFiBJEn/rty ACWJ9QMOnwi0DoVaepG/m9QJh6AIUUFW4//9helmSm0GIVzxQ2+f8UeKU+sYiVtH ro9atea4W4+FMTvtEB1cU8oG5CDVT4WQdUXbjMktqYe3+WB8Zt8+fIP0mnbTFAVr yStpliGPecmlupJVRYqrJGyDdbkUxXxVlPsP/eDrHFgbBWv8Incw0f+MLGSi6LSE sZ1MaKCdi2tlHbtD/fiowfLoBMZwQAKY4hq/XguVsWh+BGaGUgwtif+8ESwPeu22 KEZLyWDQ1N8XBHyOBotV7vsBEwh6LKtLGVXIBsO4KxVyGw6msxWBis0dt/tkn+kk LEg= =B9WK -----END PGP SIGNATURE----- Merge tag 'probes-fixes-v6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull probes fixes from Masami Hiramatsu: - objpool: Fix objpool overrun case on memory/cache access delay especially on the big.LITTLE SoC. The objpool uses a copy of object slot index internal loop, but the slot index can be changed on another processor in parallel. In that case, the difference of 'head' local copy and the 'slot->last' index will be bigger than local slot size. In that case, we need to re-read the slot::head to update it. - kretprobe: Fix to use appropriate rcu API for kretprobe holder. Since kretprobe_holder::rp is RCU managed, it should use rcu_assign_pointer() and rcu_dereference_check() correctly. Also adding __rcu tag for finding wrong usage by sparse. - rethook: Fix to use appropriate rcu API for rethook::handler. The same as kretprobe, rethook::handler is RCU managed and it should use rcu_assign_pointer() and rcu_dereference_check(). This also adds __rcu tag for finding wrong usage by sparse. * tag 'probes-fixes-v6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: rethook: Use __rcu pointer for rethook::handler kprobes: consistent rcu api usage for kretprobe holder lib: objpool: fix head overrun on RK3588 SBC |
||
|
Linus Torvalds
|
ce474ae7d0 |
ACPI fixes for 6.7-rc4
- Fix a recently introduced build issue on ARM32 platforms caused by an
inadvertent header file breakage (Dave Jiang).
- Eliminate questionable usage of acpi_driver_data() in the ACPI
backlight cooling device code that leads to NULL pointer dereferences
after recent ACPI core changes (Hans de Goede).
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Merge tag 'acpi-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"This fixes a recently introduced build issue on ARM32 and a NULL
pointer dereference in the ACPI backlight driver due to a design issue
exposed by a recent change in the ACPI bus type code.
Specifics:
- Fix a recently introduced build issue on ARM32 platforms caused by
an inadvertent header file breakage (Dave Jiang)
- Eliminate questionable usage of acpi_driver_data() in the ACPI
backlight cooling device code that leads to NULL pointer
dereferences after recent ACPI core changes (Hans de Goede)"
* tag 'acpi-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: video: Use acpi_video_device for cooling-dev driver data
ACPI: Fix ARM32 platforms compile issue introduced by fw_table changes
|
||
|
Linus Torvalds
|
e6861be452 |
More bcachefs bugfixes for 6.7
Bigger/user visible fixes:
- bcache & bcachefs were broken with CFI enabled; patch for closures to
fix type punning
- mark erasure coding as extra-experimental; there are incompatible
disk space accounting changes coming for erasure coding, and I'm
still seeing checksum errors in some tests
- several fixes for durability-related issues (durability is a device
specific setting where we can tell bcachefs that data on a given
device should be counted as replicated x times )
- a fix for a rare livelock when a btree node merge then updates a
parent node that is almost full
- fix a race in the device removal path, where dropping a pointer in a
btree node to a device would be clobbered by an in flight btree write
updating the btree node key on completion
- fix one SRCU lock hold time warning in the btree gc code - ther's
still a bunch more of these to fix
- fix a rare race where we'd start copygc before initializing the "are
we rw" percpu refcount; copygc would think we were already ro and die
immediately
https://evilpiepirate.org/~testdashboard/ci?branch=bcachefs-for-upstream
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Merge tag 'bcachefs-2023-11-29' of https://evilpiepirate.org/git/bcachefs
Pull more bcachefs bugfixes from Kent Overstreet:
- bcache & bcachefs were broken with CFI enabled; patch for closures to
fix type punning
- mark erasure coding as extra-experimental; there are incompatible
disk space accounting changes coming for erasure coding, and I'm
still seeing checksum errors in some tests
- several fixes for durability-related issues (durability is a device
specific setting where we can tell bcachefs that data on a given
device should be counted as replicated x times)
- a fix for a rare livelock when a btree node merge then updates a
parent node that is almost full
- fix a race in the device removal path, where dropping a pointer in a
btree node to a device would be clobbered by an in flight btree write
updating the btree node key on completion
- fix one SRCU lock hold time warning in the btree gc code - ther's
still a bunch more of these to fix
- fix a rare race where we'd start copygc before initializing the "are
we rw" percpu refcount; copygc would think we were already ro and die
immediately
* tag 'bcachefs-2023-11-29' of https://evilpiepirate.org/git/bcachefs: (23 commits)
bcachefs: Extra kthread_should_stop() calls for copygc
bcachefs: Convert gc_alloc_start() to for_each_btree_key2()
bcachefs: Fix race between btree writes and metadata drop
bcachefs: move journal seq assertion
bcachefs: -EROFS doesn't count as move_extent_start_fail
bcachefs: trace_move_extent_start_fail() now includes errcode
bcachefs: Fix split_race livelock
bcachefs: Fix bucket data type for stripe buckets
bcachefs: Add missing validation for jset_entry_data_usage
bcachefs: Fix zstd compress workspace size
bcachefs: bpos is misaligned on big endian
bcachefs: Fix ec + durability calculation
bcachefs: Data update path won't accidentaly grow replicas
bcachefs: deallocate_extra_replicas()
bcachefs: Proper refcounting for journal_keys
bcachefs: preserve device path as device name
bcachefs: Fix an endianness conversion
bcachefs: Start gc, copygc, rebalance threads after initing writes ref
bcachefs: Don't stop copygc thread on device resize
bcachefs: Make sure bch2_move_ratelimit() also waits for move_ops
...
|
||
|
Rafael J. Wysocki
|
7d4c44a53d |
Merge branch 'acpi-tables'
Merge a fix for a recently introduced build issue on ARM32 platforms caused by an inadvertent header file breakage (Dave Jiang). * acpi-tables: ACPI: Fix ARM32 platforms compile issue introduced by fw_table changes |
||
|
wuqiang.matt
|
d67f39d2b8 |
lib: objpool: fix head overrun on RK3588 SBC
objpool overrun stress with test_objpool on OrangePi5+ SBC triggered the
following kernel warnings:
WARNING: CPU: 6 PID: 3115 at lib/objpool.c:168 objpool_push+0xc0/0x100
This message is from objpool.c:168:
WARN_ON_ONCE(tail - head > pool->nr_objs);
The overrun test case is to validate the case that pre-allocated objects
are insufficient: 8 objects are pre-allocated for each node and consumer
thread per node tries to grab 16 objects in a row. The testing system is
OrangePI 5+, with RK3588, a big.LITTLE SOC with 4x A76 and 4x A55. When
disabling either all 4 big or 4 little cores, the overrun tests run well,
and once with big and little cores mixed together, the overrun test would
always cause an overrun loop. It's likely the memory timing differences
of big and little cores cause this trouble. Here are the debugging data
of objpool_try_get_slot after try_cmpxchg_release:
objpool_pop: cpu: 4/0 0:0 head: 278/279 tail:278 last:276/278
The local copies of 'head' and 'last' were 278 and 276, and reloading of
'slot->head' and 'slot->last' got 279 and 278. After try_cmpxchg_release
'slot->head' became 'head + 1', which is correct. But what's wrong here
is the stale value of 'last', and that stale value of 'last' finally led
the overrun of 'head'.
Memory updating of 'last' and 'head' are performed in push() and pop()
independently, which could be the culprit leading this out of order
visibility of 'last' and 'head'. So for objpool_try_get_slot(), it's
not enough only checking the condition of 'head != slot', the implicit
condition 'last - head <= nr_objs' must also be explicitly asserted to
guarantee 'last' is always behind 'head' before the object retrieving.
This patch will check and try reloading of 'head' and 'last' to ensure
'last' is behind 'head' at the time of object retrieving. Performance
testings show the average impact is about 0.1% for X86_64 and 1.12% for
ARM64. Here are the results:
OS: Debian 10 X86_64, Linux 6.6rc
HW: XEON 8336C x 2, 64 cores/128 threads, DDR4 3200MT/s
1T 2T 4T 8T 16T
native: 49543304 99277826 199017659 399070324 795185848
objpool: 29909085 59865637 119692073 239750369 478005250
objpool+: 29879313 59230743 119609856 239067773 478509029
32T 48T 64T 96T 128T
native: 1596927073 2390099988 2929397330 3183875848 3257546602
objpool: 957553042 1435814086 1680872925 2043126796 2165424198
objpool+: 956476281 1434491297 1666055740 2041556569 2157415622
OS: Debian 11 AARCH64, Linux 6.6rc
HW: Kunpeng-920 96 cores/2 sockets/4 NUMA nodes, DDR4 2933 MT/s
1T 2T 4T 8T 16T
native:
|
||
|
Linus Torvalds
|
47669f40b1 |
linux_kselftest-kunit-fixes-6.7-rc4
This KUnit fixes update for Linux 6.7-rc4 consists of three fixes to warnings and run-time test behavior. With these fixes, test suite counter will be reset correctly before running tests, kunit will warn if tests are too slow, and eliminate warning when kfree() as an action. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmVosvIACgkQCwJExA0N QxyzqxAAtXffplLUm7saZW7bXW3IB5Bugzu5qjp8Zw0YR7WNhgXMimCVHotWhuHX CrQiRIf1ZyXt6+qnUYXMIsEpMri03qhun2E8lmsA6Ws7xAHgQh5nORPEZOgBEV+3 HnyPJTT2RBPBoOZuRTipYeu6MZE1YSnmpGdftYWHWENThqG+qb5WJ/Rs33JSZAnx O/XnCHZigqc7aCxZHnm8HcFWfikn4pFg2f76XU7j6uvH+ZIuQJEZvCdukzjWvGeC AP47AaZ04rqbkRZAA5nOew7SIgb0fK3dYdxsWfv3ai1gJMReUwqwQQ/44tnxtPs2 s0d2FzH8+OL3MIQ0PFMH/E16bmAwcGXFlRmJvJFdbMoWa+zji8mhUSw7qIqJaFTI 6oMHd4XdHGwHYHrLgQgLdIzuggTRSusnaMBubGJe0xo2xCgFI6CjNUzLNk1zsY2L OeKNlTUH2l3oOnlia4CsOPzx5HOe204ZCZwQR1fkSQVmfkl5cfz17Mr/lKshxH+Q X+t56bLy5rhyUI6LxrAj7AC6E8MVQ/fiial3v1lDmJKD6Bh5YL0n6wAl5eWv3Hcq Com0maVlGCaPIErzjaSM9RqBCYT7Le89J/p3lJ7rXF3zUY8B1Miv7IVCeHDOxzpl AwMI9PavdHOvh2NeaDku/fQwzID7ytdT7dAktQIviUReqWnZRGU= =g2ql -----END PGP SIGNATURE----- Merge tag 'linux_kselftest-kunit-fixes-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull KUnit fixes from Shuah Khan: "Three fixes to warnings and run-time test behavior. With these fixes, test suite counter will be reset correctly before running tests, kunit will warn if tests are too slow, and eliminate warning when kfree() as an action" * tag 'linux_kselftest-kunit-fixes-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: test: Avoid cast warning when adding kfree() as an action kunit: Reset suite counter right before running tests kunit: Warn if tests are slow |
||
|
Jakub Kicinski
|
753c8608f3 |
bpf-next-for-netdev
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZWiCPAAKCRDbK58LschI g4djAQC1FdqCRIFkhbiIRNHTgHjnfQShELQbd9ofJqzylLqmmgD+JI1E7D9SXagm pIXQ26EGmq8/VcCT3VLncA8EsC76Gg4= =Xowm -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2023-11-30 We've added 30 non-merge commits during the last 7 day(s) which contain a total of 58 files changed, 1598 insertions(+), 154 deletions(-). The main changes are: 1) Add initial TX metadata implementation for AF_XDP with support in mlx5 and stmmac drivers. Two types of offloads are supported right now, that is, TX timestamp and TX checksum offload, from Stanislav Fomichev with stmmac implementation from Song Yoong Siang. 2) Change BPF verifier logic to validate global subprograms lazily instead of unconditionally before the main program, so they can be guarded using BPF CO-RE techniques, from Andrii Nakryiko. 3) Add BPF link_info support for uprobe multi link along with bpftool integration for the latter, from Jiri Olsa. 4) Use pkg-config in BPF selftests to determine ld flags which is in particular needed for linking statically, from Akihiko Odaki. 5) Fix a few BPF selftest failures to adapt to the upcoming LLVM18, from Yonghong Song. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (30 commits) bpf/tests: Remove duplicate JSGT tests selftests/bpf: Add TX side to xdp_hw_metadata selftests/bpf: Convert xdp_hw_metadata to XDP_USE_NEED_WAKEUP selftests/bpf: Add TX side to xdp_metadata selftests/bpf: Add csum helpers selftests/xsk: Support tx_metadata_len xsk: Add option to calculate TX checksum in SW xsk: Validate xsk_tx_metadata flags xsk: Document tx_metadata_len layout net: stmmac: Add Tx HWTS support to XDP ZC net/mlx5e: Implement AF_XDP TX timestamp and checksum offload tools: ynl: Print xsk-features from the sample xsk: Add TX timestamp and TX checksum offload support xsk: Support tx_metadata_len selftests/bpf: Use pkg-config for libelf selftests/bpf: Override PKG_CONFIG for static builds selftests/bpf: Choose pkg-config for the target bpftool: Add support to display uprobe_multi links selftests/bpf: Add link_info test for uprobe_multi link selftests/bpf: Use bpf_link__destroy in fill_link_info tests ... ==================== Conflicts: Documentation/netlink/specs/netdev.yaml: |
||
|
Jakub Kicinski
|
975f2d73a9 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Yujie Liu
|
f690ff9122 |
bpf/tests: Remove duplicate JSGT tests
It seems unnecessary that JSGT is tested twice (one before JSGE and one
after JSGE) since others are tested only once. Remove the duplicate JSGT
tests.
Fixes:
|
||
|
Linus Torvalds
|
d2da77f431 |
parisc architecture fixes for kernel v6.7-rc3:
- Drop HP-UX ENOSYM and EREMOTERELEASE return codes to avoid glibc
build issues
- Fix section alignments for ex_table, altinstructions, parisc unwind
table, jump_table and bug_table
- Reduce size of bug_table on 64-bit kernel by using relative
pointers
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Merge tag 'parisc-for-6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc architecture fixes from Helge Deller:
"This patchset fixes and enforces correct section alignments for the
ex_table, altinstructions, parisc_unwind, jump_table and bug_table
which are created by inline assembly.
Due to not being correctly aligned at link & load time they can
trigger unnecessarily the kernel unaligned exception handler at
runtime. While at it, I switched the bug table to use relative
addresses which reduces the size of the table by half on 64-bit.
We still had the ENOSYM and EREMOTERELEASE errno symbols as left-overs
from HP-UX, which now trigger build-issues with glibc. We can simply
remove them.
Most of the patches are tagged for stable kernel series.
Summary:
- Drop HP-UX ENOSYM and EREMOTERELEASE return codes to avoid glibc
build issues
- Fix section alignments for ex_table, altinstructions, parisc unwind
table, jump_table and bug_table
- Reduce size of bug_table on 64-bit kernel by using relative
pointers"
* tag 'parisc-for-6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Reduce size of the bug_table on 64-bit kernel by half
parisc: Drop the HP-UX ENOSYM and EREMOTERELEASE error codes
parisc: Use natural CPU alignment for bug_table
parisc: Ensure 32-bit alignment on parisc unwind section
parisc: Mark lock_aligned variables 16-byte aligned on SMP
parisc: Mark jump_table naturally aligned
parisc: Mark altinstructions read-only and 32-bit aligned
parisc: Mark ex_table entries 32-bit aligned in uaccess.h
parisc: Mark ex_table entries 32-bit aligned in assembly.h
|
||
|
Helge Deller
|
e5f3e299a2 |
parisc: Drop the HP-UX ENOSYM and EREMOTERELEASE error codes
Those return codes are only defined for the parisc architecture and are leftovers from when we wanted to be HP-UX compatible. They are not returned by any Linux kernel syscall but do trigger problems with the glibc strerrorname_np() and strerror() functions as reported in glibc issue #31080. There is no need to keep them, so simply remove them. Signed-off-by: Helge Deller <deller@gmx.de> Reported-by: Bruno Haible <bruno@clisp.org> Closes: https://sourceware.org/bugzilla/show_bug.cgi?id=31080 Cc: stable@vger.kernel.org |
||
|
Jakub Kicinski
|
53775da0b4 |
Merge branch 'firmware_loader'
Kory says: ==================== This patch was initially submitted as part of a net patch series. Conor expressed interest in using it in a different subsystem. https://lore.kernel.org/netdev/20231116-feature_poe-v1-7-be48044bf249@bootlin.com/ Consequently, I extracted it from the series and submitted it separately. I first tried to send it to driver-core but it seems also not the best choice: https://lore.kernel.org/lkml/2023111720-slicer-exes-7d9f@gregkh/ ==================== Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Kory Maincent
|
a066f906ba |
firmware_loader: Expand Firmware upload error codes with firmware invalid error
No error code are available to signal an invalid firmware content. Drivers that can check the firmware content validity can not return this specific failure to the user-space Expand the firmware error code with an additional code: - "firmware invalid" code which can be used when the provided firmware is invalid Sync lib/test_firmware.c file accordingly. Acked-by: Luis Chamberlain <mcgrof@kernel.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Kory Maincent <kory.maincent@bootlin.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/20231122-feature_firmware_error_code-v3-1-04ec753afb71@bootlin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Linus Torvalds
|
fa2b906f51 |
vfs-6.7-rc3.fixes
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Merge tag 'vfs-6.7-rc3.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
- Avoid calling back into LSMs from vfs_getattr_nosec() calls.
IMA used to query inode properties accessing raw inode fields without
dedicated helpers. That was finally fixed a few releases ago by
forcing IMA to use vfs_getattr_nosec() helpers.
The goal of the vfs_getattr_nosec() helper is to query for attributes
without calling into the LSM layer which would be quite problematic
because incredibly IMA is called from __fput()...
__fput()
-> ima_file_free()
What it does is to call back into the filesystem to update the file's
IMA xattr. Querying the inode without using vfs_getattr_nosec() meant
that IMA didn't handle stacking filesystems such as overlayfs
correctly. So the switch to vfs_getattr_nosec() is quite correct. But
the switch to vfs_getattr_nosec() revealed another bug when used on
stacking filesystems:
__fput()
-> ima_file_free()
-> vfs_getattr_nosec()
-> i_op->getattr::ovl_getattr()
-> vfs_getattr()
-> i_op->getattr::$WHATEVER_UNDERLYING_FS_getattr()
-> security_inode_getattr() # calls back into LSMs
Now, if that __fput() happens from task_work_run() of an exiting task
current->fs and various other pointer could already be NULL. So
anything in the LSM layer relying on that not being NULL would be
quite surprised.
Fix that by passing the information that this is a security request
through to the stacking filesystem by adding a new internal
ATT_GETATTR_NOSEC flag. Now the callchain becomes:
__fput()
-> ima_file_free()
-> vfs_getattr_nosec()
-> i_op->getattr::ovl_getattr()
-> if (AT_GETATTR_NOSEC)
vfs_getattr_nosec()
else
vfs_getattr()
-> i_op->getattr::$WHATEVER_UNDERLYING_FS_getattr()
- Fix a bug introduced with the iov_iter rework from last cycle.
This broke /proc/kcore by copying too much and without the correct
offset.
- Add a missing NULL check when allocating the root inode in
autofs_fill_super().
- Fix stable writes for multi-device filesystems (xfs, btrfs etc) and
the block device pseudo filesystem.
Stable writes used to be a superblock flag only, making it a per
filesystem property. Add an additional AS_STABLE_WRITES mapping flag
to allow for fine-grained control.
- Ensure that offset_iterate_dir() returns 0 after reaching the end of
a directory so it adheres to getdents() convention.
* tag 'vfs-6.7-rc3.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
libfs: getdents() should return 0 after reaching EOD
xfs: respect the stable writes flag on the RT device
xfs: clean up FS_XFLAG_REALTIME handling in xfs_ioctl_setattr_xflags
block: update the stable_writes flag in bdev_add
filemap: add a per-mapping stable writes flag
autofs: add: new_inode check in autofs_fill_super()
iov_iter: fix copy_page_to_iter_nofault()
fs: Pass AT_GETATTR_NOSEC flag to getattr interface function
|
||
|
Kent Overstreet
|
d4e3b928ab |
closures: CLOSURE_CALLBACK() to fix type punning
Control flow integrity is now checking that type signatures match on indirect function calls. That breaks closures, which embed a work_struct in a closure in such a way that a closure_fn may also be used as a workqueue fn by the underlying closure code. So we have to change closure fns to take a work_struct as their argument - but that results in a loss of clarity, as closure fns have different semantics from normal workqueue functions (they run owning a ref on the closure, which must be released with continue_at() or closure_return()). Thus, this patc introduces CLOSURE_CALLBACK() and closure_type() macros as suggested by Kees, to smooth things over a bit. Suggested-by: Kees Cook <keescook@chromium.org> Cc: Coly Li <colyli@suse.de> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
||
|
Dave Jiang
|
35732699f5 |
ACPI: Fix ARM32 platforms compile issue introduced by fw_table changes
Linus reported that: After commit |
||
|
Andrzej Hajda
|
9bb6362652 |
debugobjects: Stop accessing objects after releasing hash bucket lock
After release of the hashbucket lock the tracking object can be modified or
freed by a concurrent thread. Using it in such a case is error prone, even
for printing the object state:
1. T1 tries to deactivate destroyed object, debugobjects detects it,
hash bucket lock is released.
2. T2 preempts T1 and frees the tracking object.
3. The freed tracking object is allocated and initialized for a
different to be tracked kernel object.
4. T1 resumes and reports error for wrong kernel object.
Create a local copy of the tracking object before releasing the hash bucket
lock and use the local copy for reporting and fixups to prevent this.
Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20231025-debugobjects_fix-v3-1-2bc3bf7084c2@intel.com
|
||
|
Jakub Kicinski
|
53475287da |
bpf-next-for-netdev
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZV0kjgAKCRDbK58LschI gy0EAP9XwncW2OhO72DpITluFzvWPgB0N97OANKBXjzKJrRAlQD/aUe9nlvBQuad WsbMKLeC4wvI2X/4PEIR4ukbuZ3ypAA= =LMVg -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2023-11-21 We've added 85 non-merge commits during the last 12 day(s) which contain a total of 63 files changed, 4464 insertions(+), 1484 deletions(-). The main changes are: 1) Huge batch of verifier changes to improve BPF register bounds logic and range support along with a large test suite, and verifier log improvements, all from Andrii Nakryiko. 2) Add a new kfunc which acquires the associated cgroup of a task within a specific cgroup v1 hierarchy where the latter is identified by its id, from Yafang Shao. 3) Extend verifier to allow bpf_refcount_acquire() of a map value field obtained via direct load which is a use-case needed in sched_ext, from Dave Marchevsky. 4) Fix bpf_get_task_stack() helper to add the correct crosstask check for the get_perf_callchain(), from Jordan Rome. 5) Fix BPF task_iter internals where lockless usage of next_thread() was wrong. The rework also simplifies the code, from Oleg Nesterov. 6) Fix uninitialized tail padding via LIBBPF_OPTS_RESET, and another fix for certain BPF UAPI structs to fix verifier failures seen in bpf_dynptr usage, from Yonghong Song. 7) Add BPF selftest fixes for map_percpu_stats flakes due to per-CPU BPF memory allocator not being able to allocate per-CPU pointer successfully, from Hou Tao. 8) Add prep work around dynptr and string handling for kfuncs which is later going to be used by file verification via BPF LSM and fsverity, from Song Liu. 9) Improve BPF selftests to update multiple prog_tests to use ASSERT_* macros, from Yuran Pereira. 10) Optimize LPM trie lookup to check prefixlen before walking the trie, from Florian Lehner. 11) Consolidate virtio/9p configs from BPF selftests in config.vm file given they are needed consistently across archs, from Manu Bretelle. 12) Small BPF verifier refactor to remove register_is_const(), from Shung-Hsi Yu. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (85 commits) selftests/bpf: Replaces the usage of CHECK calls for ASSERTs in vmlinux selftests/bpf: Replaces the usage of CHECK calls for ASSERTs in bpf_obj_id selftests/bpf: Replaces the usage of CHECK calls for ASSERTs in bind_perm selftests/bpf: Replaces the usage of CHECK calls for ASSERTs in bpf_tcp_ca selftests/bpf: reduce verboseness of reg_bounds selftest logs bpf: bpf_iter_task_next: use next_task(kit->task) rather than next_task(kit->pos) bpf: bpf_iter_task_next: use __next_thread() rather than next_thread() bpf: task_group_seq_get_next: use __next_thread() rather than next_thread() bpf: emit frameno for PTR_TO_STACK regs if it differs from current one bpf: smarter verifier log number printing logic bpf: omit default off=0 and imm=0 in register state log bpf: emit map name in register state if applicable and available bpf: print spilled register state in stack slot bpf: extract register state printing bpf: move verifier state printing code to kernel/bpf/log.c bpf: move verbose_linfo() into kernel/bpf/log.c bpf: rename BPF_F_TEST_SANITY_STRICT to BPF_F_TEST_REG_INVARIANTS bpf: Remove test for MOVSX32 with offset=32 selftests/bpf: add iter test requiring range x range logic veristat: add ability to set BPF_F_TEST_SANITY_STRICT flag with -r flag ... ==================== Link: https://lore.kernel.org/r/20231122000500.28126-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Omar Sandoval
|
fe2c34bab6 |
iov_iter: fix copy_page_to_iter_nofault()
The recent conversion to inline functions made two mistakes:
1. It tries to copy the full amount requested (bytes), not just what's
available in the kmap'd page (n).
2. It's not applying the offset in the first page.
Note that copy_page_to_iter_nofault() is only used by /proc/kcore. This
was detected by drgn's test suite.
Fixes:
|
||
|
Sagar Vashnav
|
239e27a983 |
crypto: lib/aesgcm - Add kernel docs for aesgcm_mac
Add kernel documentation for the aesgcm_mac. This function generates the authentication tag using the AES-GCM algorithm. Signed-off-by: Sagar Vashnav <sagarvashnav72427@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Puranjay Mohan
|
5fa201f37c |
bpf: Remove test for MOVSX32 with offset=32
MOVSX32 only supports sign extending 8-bit and 16-bit operands into 32
bit operands. The "ALU_MOVSX | BPF_W" test tries to sign extend a 32 bit
operand into a 32 bit operand which is equivalent to a normal BPF_MOV.
Remove this test as it tries to run an invalid instruction.
Fixes:
|
||
|
Linus Torvalds
|
86d11b0e20 |
Zstd fixes for v6.7
Only a single line change to fix a benign UBSAN warning that has been baking in linux-next for a month. I just missed the merge window, but I think it is worthwhile to include this fix in the v6.7 kernel. If you would like me to wait for v6.8 please let me know. Signed-off-by: Nick Terrell <terrelln@fb.com> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEmIwAqlFIzbQodPwyuzRpqaNEqPUFAmVUG20ACgkQuzRpqaNE qPXx2Q/9GSGokNZm3+ZgINijpxsSz/+WT34ZJ4n14ns97PiiiSLQ10Nzpy3xGfHC gQTXYUoRJhuTUsid8QDsbgoLzybOxgZsxQWECrWEioXS+AiGCqGLnC85JdZNpJO3 hWrxO6j0XfLb6Sgl5gm0CBWVuGkdKSUCCd91iHIZ9vKwFWSsQizGsdyYVXB4gZn4 qYYGhka5TunDXgaTeqBGlNe3x6b/RvsPTBsX3SnAI3aBd88I6xrpcURrYru3NerZ 16V2t5+GpiDz8cm7IHwEekh4JNaMwRLO8jhkThdErbLjFs/TU0s2hXkvG0m/yujs 4Yklv+j0wIJv7f0IMSEZi+msnun+ajx8Mg4P1hi6WEiyylHC7aGAT55ShKhO8Qzx FD1kNiNR9svfHL83fJAZ3iEuhOQokRnt2qADutYmp0kq6BCcEnNuMBOpSyw+hzDZ MHDCkTujDTobE8gzZBEwUYPiw9kX6c3vsvb/mmNv8+y2LUxyb0GShinw3od0RlKQ T5xF6yq9neAxbARFJ9e3Zs51e5OXnCbb+K+pMNqR+nw89hUXiscynN93o4jMCzpn VBmhjzaSUTiTABG2TrqWNa5Vr6J3l77sr6T5bvC5aNpQQZ9KZFFPmpup8Z4BtBrG 89BZqDsrUDRlMpS4Z2ECbl5GUELP3EBSV1NHRgVM4BB7t/UzvzU= =w0Q0 -----END PGP SIGNATURE----- Merge tag 'zstd-linus-v6.7-rc2' of https://github.com/terrelln/linux Pull Zstd fix from Nick Terrell: "Only a single line change to fix a benign UBSAN warning" * tag 'zstd-linus-v6.7-rc2' of https://github.com/terrelln/linux: zstd: Fix array-index-out-of-bounds UBSAN warning |
||
|
Nick Terrell
|
77618db346 |
zstd: Fix array-index-out-of-bounds UBSAN warning
Zstd used an array of length 1 to mean a flexible array for C89 compatibility. Switch to a C99 flexible array to fix the UBSAN warning. Tested locally by booting the kernel and writing to and reading from a BtrFS filesystem with zstd compression enabled. I was unable to reproduce the issue before the fix, however it is a trivial change. Link: https://lkml.kernel.org/r/20231012213428.1390905-1-nickrterrell@gmail.com Reported-by: syzbot+1f2eb3e8cd123ffce499@syzkaller.appspotmail.com Reported-by: Eric Biggers <ebiggers@kernel.org> Reported-by: Kees Cook <keescook@chromium.org> Signed-off-by: Nick Terrell <terrelln@fb.com> Reviewed-by: Kees Cook <keescook@chromium.org> |
||
|
Richard Fitzgerald
|
1bddcf77ce |
kunit: test: Avoid cast warning when adding kfree() as an action
In kunit_log_test() pass the kfree_wrapper() function to kunit_add_action()
instead of directly passing kfree().
This prevents a cast warning:
lib/kunit/kunit-test.c:565:25: warning: cast from 'void (*)(const void *)'
to 'kunit_action_t *' (aka 'void (*)(void *)') converts to incompatible
function type [-Wcast-function-type-strict]
564 full_log = string_stream_get_string(test->log);
> 565 kunit_add_action(test, (kunit_action_t *)kfree, full_log);
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202311070041.kWVYx7YP-lkp@intel.com/
Fixes:
|
||
|
Michal Wajdeczko
|
2e3c94aed5 |
kunit: Reset suite counter right before running tests
Today we reset the suite counter as part of the suite cleanup, called from the module exit callback, but it might not work that well as one can try to collect results without unloading a previous test (either unintentionally or due to dependencies). For easy reproduction try to load the kunit-test.ko and then collect and parse results from the kunit-example-test.ko load. Parser will complain about mismatch of expected test number: [ ] KTAP version 1 [ ] 1..1 [ ] # example: initializing suite [ ] KTAP version 1 [ ] # Subtest: example .. [ ] # example: pass:5 fail:0 skip:4 total:9 [ ] # Totals: pass:6 fail:0 skip:6 total:12 [ ] ok 7 example [ ] [ERROR] Test: example: Expected test number 1 but found 7 [ ] ===================== [PASSED] example ===================== [ ] ============================================================ [ ] Testing complete. Ran 12 tests: passed: 6, skipped: 6, errors: 1 Since we are now printing suite test plan on every module load, right before running suite tests, we should make sure that suite counter will also start from 1. Easiest solution seems to be move counter reset to the __kunit_test_suites_init() function. Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: David Gow <davidgow@google.com> Cc: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Maxime Ripard
|
f8f2847f73 |
kunit: Warn if tests are slow
Kunit recently gained support to setup attributes, the first one being the speed of a given test, then allowing to filter out slow tests. A slow test is defined in the documentation as taking more than one second. There's an another speed attribute called "super slow" but whose definition is less clear. Add support to the test runner to check the test execution time, and report tests that should be marked as slow but aren't. Signed-off-by: Maxime Ripard <mripard@kernel.org> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
wuqiang.matt
|
3afe733729 |
lib: test_objpool: make global variables static
Kernel test robot reported build warnings that structures g_ot_sync_ops, g_ot_async_ops and g_testcases should be static. These definitions are only used in test_objpool.c, so make them static Link: https://lore.kernel.org/all/20231108012248.313574-1-wuqiang.matt@bytedance.com/ Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202311071229.WGrWUjM1-lkp@intel.com/ Signed-off-by: wuqiang.matt <wuqiang.matt@bytedance.com> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> |
||
|
Linus Torvalds
|
c9d01179e1 |
Second bcachefs pull request for 6.7-rc1
Here's the second big bcachefs pull request. This brings your tree up to date with my master branch, which is what existing bcachefs users are currently running. All but the last few patches have been in linux-next, those being small fixes. Test results from my dashboard: https://evilpiepirate.org/~testdashboard/ci?commit=c7046ed0cf9bb33599aa7e72e7b67bba4be42d64 New features: - rebalance_work btree (and metadata version 1.3): the rebalance thread no longer has to scan to find extents that need processing - big scalability improvement. - sb_errors superblock section: this adds counters for each fsck error type, since filesystem creation, along with the date of the most recent error. It'll get us better bug reports (since users do not typically report errors that fsck was able to fix), and I might add telemetry for this in the future. Fixes include: - multiple snapshot deletion fixes - members_v2 fixups - deleted_inodes btree fixes - copygc thread no longer spins when a device is full but has no fragmented buckets (i.e. rebalance needs to move data around instead) - a fix for a memory reclaim issue with the btree key cache: we're now careful not to hold the srcu read lock that blocks key cache reclaim for too long - an early allocator locking fix, from Brian - endianness fixes, from Brian - CONFIG_BCACHEFS_DEBUG_TRANSACTIONS no longer defaults to y, a big performance improvement on multithreaded workloads -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEKnAFLkS8Qha+jvQrE6szbY3KbnYFAmVH9xYACgkQE6szbY3K bnahLRAAiNRZL73SQ+MW79o4yPqGwt0Eyy/mvoiGpZf1B8uXp0oZ55j2w3l887Uf LeM03mInAYCPdyp/d4vxqIr96j9BODmRRl8sEkkGdJDzokLG+22F0ovOe45KWTxL kBoNdng/O/oeOe/1K7taP3KzBvMx2nOF6oA+xfgyCjECMArAIXek0iocyEUR4Ywd vGKhLNn1k2c+94wacnDYwjjdcLBxoqxsFXlpu6V0BcaY+DX4J3aBaGmj75KEoCI0 VbBOzxrOO4QzJrzW2+hxZZWgGyvReCkBJvqfORfuPxiSbFobTim10MdfZOAMQA1U Xr1FTEpK1wMX0/pPVgZRqaOsttC+yc/SsfPNgSxybgHPbDlMLaakDHjvYssbKOYG urDWSMG5yCsktSLj95SXsvUFKZaZFD72SKBNdgdt/nZjwTHuNQ7IkdrMwIrCQ/PT Ifn50UrR/Ahd8RAd5tyNCPw6U9VfwnxACSNl2KA7ONKpvHb+gSt1JsJTDyz1+gN9 nFVrw1SHKQ6EIV6XhVon/5DEuRTzqoYGWoN08FHEUq9fBlvnVpmbJErCQMplOjz9 OQnAfpJH4YqkpXyjFAjP1V0An+RUn8QvDgXNqC9TyvCYuOliVFuil4y7/c+7oIQU NEoz+jVLenqsGOGAbduI4/Q567COojRgwEvbebSIxSImXuhCNj4= =Lo4N -----END PGP SIGNATURE----- Merge tag 'bcachefs-2023-11-5' of https://evilpiepirate.org/git/bcachefs Pull more bcachefs updates from Kent Overstreet: "Here's the second big bcachefs pull request. This brings your tree up to date with my master branch, which is what existing bcachefs users are currently running. New features: - rebalance_work btree (and metadata version 1.3): the rebalance thread no longer has to scan to find extents that need processing - big scalability improvement. - sb_errors superblock section: this adds counters for each fsck error type, since filesystem creation, along with the date of the most recent error. It'll get us better bug reports (since users do not typically report errors that fsck was able to fix), and I might add telemetry for this in the future. Fixes include: - multiple snapshot deletion fixes - members_v2 fixups - deleted_inodes btree fixes - copygc thread no longer spins when a device is full but has no fragmented buckets (i.e. rebalance needs to move data around instead) - a fix for a memory reclaim issue with the btree key cache: we're now careful not to hold the srcu read lock that blocks key cache reclaim for too long - an early allocator locking fix, from Brian - endianness fixes, from Brian - CONFIG_BCACHEFS_DEBUG_TRANSACTIONS no longer defaults to y, a big performance improvement on multithreaded workloads" * tag 'bcachefs-2023-11-5' of https://evilpiepirate.org/git/bcachefs: (70 commits) bcachefs: Improve stripe checksum error message bcachefs: Simplify, fix bch2_backpointer_get_key() bcachefs: kill thing_it_points_to arg to backpointer_not_found() bcachefs: bch2_ec_read_extent() now takes btree_trans bcachefs: bch2_stripe_to_text() now prints ptr gens bcachefs: Don't iterate over journal entries just for btree roots bcachefs: Break up bch2_journal_write() bcachefs: Replace ERANGE with private error codes bcachefs: bkey_copy() is no longer a macro bcachefs: x-macro-ify inode flags enum bcachefs: Convert bch2_fs_open() to darray bcachefs: Move __bch2_members_v2_get_mut to sb-members.h bcachefs: bch2_prt_datetime() bcachefs: CONFIG_BCACHEFS_DEBUG_TRANSACTIONS no longer defaults to y bcachefs: Add a comment for BTREE_INSERT_NOJOURNAL usage bcachefs: rebalance_work btree is not a snapshots btree bcachefs: Add missing printk newlines bcachefs: Fix recovery when forced to use JSET_NO_FLUSH journal entry bcachefs: .get_parent() should return an error pointer bcachefs: Fix bch2_delete_dead_inodes() ... |
||
|
Linus Torvalds
|
b8cc56d041 |
cxl for v6.7
- Add support for RCH (Restricted CXL Host) Error recovery
- Fix several region assembly bugs
- Fix mem-device lifetime issues relative to the sanitize command and
RCH topology.
- Refactor ACPI table parsing for CDAT parsing re-use in preparation for
CXL QOS support.
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Merge tag 'cxl-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull CXL (Compute Express Link) updates from Dan Williams:
"The main new functionality this time is work to allow Linux to
natively handle CXL link protocol errors signalled via PCIe AER for
current generation CXL platforms. This required some enlightenment of
the PCIe AER core to workaround the fact that current generation RCH
(Restricted CXL Host) platforms physically hide topology details and
registers via a mechanism called RCRB (Root Complex Register Block).
The next major highlight is reworks to address bugs in parsing region
configurations for next generation VH (Virtual Host) topologies. The
old broken algorithm is replaced with a simpler one that significantly
increases the number of region configurations supported by Linux. This
is again relevant for error handling so that forward and reverse
address translation of memory errors can be carried out by Linux for
memory regions instantiated by platform firmware.
As for other cross-tree work, the ACPI table parsing code has been
refactored for reuse parsing the "CDAT" structure which is an
ACPI-like data structure that is reported by CXL devices. That work is
in preparation for v6.8 support for CXL QoS. Think of this as dynamic
generation of NUMA node topology information generated by Linux rather
than platform firmware.
Lastly, a number of internal object lifetime issues have been resolved
along with misc. fixes and feature updates (decoders_committed sysfs
ABI).
Summary:
- Add support for RCH (Restricted CXL Host) Error recovery
- Fix several region assembly bugs
- Fix mem-device lifetime issues relative to the sanitize command and
RCH topology.
- Refactor ACPI table parsing for CDAT parsing re-use in preparation
for CXL QOS support"
* tag 'cxl-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (50 commits)
lib/fw_table: Remove acpi_parse_entries_array() export
cxl/pci: Change CXL AER support check to use native AER
cxl/hdm: Remove broken error path
cxl/hdm: Fix && vs || bug
acpi: Move common tables helper functions to common lib
cxl: Add support for reading CXL switch CDAT table
cxl: Add checksum verification to CDAT from CXL
cxl: Export QTG ids from CFMWS to sysfs as qos_class attribute
cxl: Add decoders_committed sysfs attribute to cxl_port
cxl: Add cxl_decoders_committed() helper
cxl/core/regs: Rework cxl_map_pmu_regs() to use map->dev for devm
cxl/core/regs: Rename phys_addr in cxl_map_component_regs()
PCI/AER: Unmask RCEC internal errors to enable RCH downstream port error handling
PCI/AER: Forward RCH downstream port-detected errors to the CXL.mem dev handler
cxl/pci: Disable root port interrupts in RCH mode
cxl/pci: Add RCH downstream port error logging
cxl/pci: Map RCH downstream AER registers for logging protocol errors
cxl/pci: Update CXL error logging to use RAS register address
PCI/AER: Refactor cper_print_aer() for use by CXL driver module
cxl/pci: Add RCH downstream port AER register discovery
...
|
||
|
Linus Torvalds
|
707df298cb |
powerpc updates for 6.7
- Add support for KVM running as a nested hypervisor under development versions
of PowerVM, using the new PAPR nested virtualisation API.
- Add support for the BPF prog pack allocator.
- A rework of the non-server MMU handling to support execute-only on all platforms.
- Some optimisations & cleanups for the powerpc qspinlock code.
- Various other small features and fixes.
Thanks to: Aboorva Devarajan, Aditya Gupta, Amit Machhiwal, Benjamin Gray,
Christophe Leroy, Dr. David Alan Gilbert, Gaurav Batra, Gautam Menghani, Geert
Uytterhoeven, Haren Myneni, Hari Bathini, Joel Stanley, Jordan Niethe, Julia
Lawall, Kautuk Consul, Kuan-Wei Chiu, Michael Neuling, Minjie Du, Muhammad
Muzammil, Naveen N Rao, Nicholas Piggin, Nick Child, Nysal Jan K.A, Peter
Lafreniere, Rob Herring, Sachin Sant, Sebastian Andrzej Siewior, Shrikanth
Hegde, Srikar Dronamraju, Stanislav Kinsburskii, Vaibhav Jain, Wang Yufen, Yang
Yingliang, Yuan Tan.
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Merge tag 'powerpc-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- Add support for KVM running as a nested hypervisor under development
versions of PowerVM, using the new PAPR nested virtualisation API
- Add support for the BPF prog pack allocator
- A rework of the non-server MMU handling to support execute-only on
all platforms
- Some optimisations & cleanups for the powerpc qspinlock code
- Various other small features and fixes
Thanks to Aboorva Devarajan, Aditya Gupta, Amit Machhiwal, Benjamin
Gray, Christophe Leroy, Dr. David Alan Gilbert, Gaurav Batra, Gautam
Menghani, Geert Uytterhoeven, Haren Myneni, Hari Bathini, Joel Stanley,
Jordan Niethe, Julia Lawall, Kautuk Consul, Kuan-Wei Chiu, Michael
Neuling, Minjie Du, Muhammad Muzammil, Naveen N Rao, Nicholas Piggin,
Nick Child, Nysal Jan K.A, Peter Lafreniere, Rob Herring, Sachin Sant,
Sebastian Andrzej Siewior, Shrikanth Hegde, Srikar Dronamraju, Stanislav
Kinsburskii, Vaibhav Jain, Wang Yufen, Yang Yingliang, and Yuan Tan.
* tag 'powerpc-6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (100 commits)
powerpc/vmcore: Add MMU information to vmcoreinfo
Revert "powerpc: add `cur_cpu_spec` symbol to vmcoreinfo"
powerpc/bpf: use bpf_jit_binary_pack_[alloc|finalize|free]
powerpc/bpf: rename powerpc64_jit_data to powerpc_jit_data
powerpc/bpf: implement bpf_arch_text_invalidate for bpf_prog_pack
powerpc/bpf: implement bpf_arch_text_copy
powerpc/code-patching: introduce patch_instructions()
powerpc/32s: Implement local_flush_tlb_page_psize()
powerpc/pseries: use kfree_sensitive() in plpks_gen_password()
powerpc/code-patching: Perform hwsync in __patch_instruction() in case of failure
powerpc/fsl_msi: Use device_get_match_data()
powerpc: Remove cpm_dp...() macros
powerpc/qspinlock: Rename yield_propagate_owner tunable
powerpc/qspinlock: Propagate sleepy if previous waiter is preempted
powerpc/qspinlock: don't propagate the not-sleepy state
powerpc/qspinlock: propagate owner preemptedness rather than CPU number
powerpc/qspinlock: stop queued waiters trying to set lock sleepy
powerpc/perf: Fix disabling BHRB and instruction sampling
powerpc/trace: Add support for HAVE_FUNCTION_ARG_ACCESS_API
powerpc/tools: Pass -mabi=elfv2 to gcc-check-mprofile-kernel.sh
...
|
||
|
Linus Torvalds
|
31e5f934ff |
Tracing updates for v6.7:
- Remove eventfs_file descriptor This is the biggest change, and the second part of making eventfs create its files dynamically. In 6.6 the first part was added, and that maintained a one to one mapping between eventfs meta descriptors and the directories and file inodes and dentries that were dynamically created. The directories were represented by a eventfs_inode and the files were represented by a eventfs_file. In v6.7 the eventfs_file is removed. As all events have the same directory make up (sched_switch has an "enable", "id", "format", etc files), the handing of what files are underneath each leaf eventfs directory is moved back to the tracing subsystem via a callback. When a event is added to the eventfs, it registers an array of evenfs_entry's. These hold the names of the files and the callbacks to call when the file is referenced. The callback gets the name so that the same callback may be used by multiple files. The callback then supplies the filesystem_operations structure needed to create this file. This has brought the memory footprint of creating multiple eventfs instances down by 2 megs each! - User events now has persistent events that are not associated to a single processes. These are privileged events that hang around even if no process is attached to them. - Clean up of seq_buf. There's talk about using seq_buf more to replace strscpy() and friends. But this also requires some minor modifications of seq_buf to be able to do this. - Expand instance ring buffers individually Currently if boot up creates an instance, and a trace event is enabled on that instance, the ring buffer for that instance and the top level ring buffer are expanded (1.4 MB per CPU). This wastes memory as this happens when nothing is using the top level instance. - Other minor clean ups and fixes. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZUMrBBQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6quzVAQCed/kPM7X9j2QZamJVDruMf2CmVxpu /TOvKvSKV584GgEAxLntf5VKx1Q98bc68y3Zkg+OCi8jSgORos1ROmURhws= =iIgb -----END PGP SIGNATURE----- Merge tag 'trace-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing updates from Steven Rostedt: - Remove eventfs_file descriptor This is the biggest change, and the second part of making eventfs create its files dynamically. In 6.6 the first part was added, and that maintained a one to one mapping between eventfs meta descriptors and the directories and file inodes and dentries that were dynamically created. The directories were represented by a eventfs_inode and the files were represented by a eventfs_file. In v6.7 the eventfs_file is removed. As all events have the same directory make up (sched_switch has an "enable", "id", "format", etc files), the handing of what files are underneath each leaf eventfs directory is moved back to the tracing subsystem via a callback. When an event is added to the eventfs, it registers an array of evenfs_entry's. These hold the names of the files and the callbacks to call when the file is referenced. The callback gets the name so that the same callback may be used by multiple files. The callback then supplies the filesystem_operations structure needed to create this file. This has brought the memory footprint of creating multiple eventfs instances down by 2 megs each! - User events now has persistent events that are not associated to a single processes. These are privileged events that hang around even if no process is attached to them - Clean up of seq_buf There's talk about using seq_buf more to replace strscpy() and friends. But this also requires some minor modifications of seq_buf to be able to do this - Expand instance ring buffers individually Currently if boot up creates an instance, and a trace event is enabled on that instance, the ring buffer for that instance and the top level ring buffer are expanded (1.4 MB per CPU). This wastes memory as this happens when nothing is using the top level instance - Other minor clean ups and fixes * tag 'trace-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (34 commits) seq_buf: Export seq_buf_puts() seq_buf: Export seq_buf_putc() eventfs: Use simple_recursive_removal() to clean up dentries eventfs: Remove special processing of dput() of events directory eventfs: Delete eventfs_inode when the last dentry is freed eventfs: Hold eventfs_mutex when calling callback functions eventfs: Save ownership and mode eventfs: Test for ei->is_freed when accessing ei->dentry eventfs: Have a free_ei() that just frees the eventfs_inode eventfs: Remove "is_freed" union with rcu head eventfs: Fix kerneldoc of eventfs_remove_rec() tracing: Have the user copy of synthetic event address use correct context eventfs: Remove extra dget() in eventfs_create_events_dir() tracing: Have trace_event_file have ref counters seq_buf: Introduce DECLARE_SEQ_BUF and seq_buf_str() eventfs: Fix typo in eventfs_inode union comment eventfs: Fix WARN_ON() in create_file_dentry() powerpc: Remove initialisation of readpos tracing/histograms: Simplify last_cmd_set() seq_buf: fix a misleading comment ... |
||
|
Linus Torvalds
|
2a80532c07 |
printk changes for 6.7
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Merge tag 'printk-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk updates from Petr Mladek:
- Another preparation step for introducing printk kthreads. The main
piece is a per-console lock with several features:
- Support three priorities: normal, emergency, and panic. They will
be defined by a context where the lock is taken. A context with a
higher priority is allowed to take over the lock from a context
with a lower one.
The plan is to use the emergency context for Oops and WARN()
messages, and also by watchdogs.
The panic() context will be used on panic CPU.
- The owner might enter/exit regions where it is not safe to take
over the lock. It allows the take over the lock a safe way in the
middle of a message.
For example, serial drivers emit characters one by one. And the
serial port is in a safe state in between.
Only the final console_flush_in_panic() will be allowed to take
over the lock even in the unsafe state (last chance, pray, and
hope).
- A higher priority context might busy wait with a timeout. The
current owner is informed about the waiter and releases the lock
on exit from the unsafe state.
- The new lock is safe even in atomic contexts, including NMI.
Another change is a safe manipulation of per-console sequence number
counter under the new lock.
- simple_strntoull() micro-optimization
- Reduce pr_flush() pooling time.
- Calm down false warning about possible buffer invalid access to
console buffers when CONFIG_PRINTK is disabled.
[ .. and Thomas Gleixner wants to point out that while several of the
commits are attributed to him, he only authored the early versions of
said commits, and that John Ogness and Petr Mladek have been the ones
who sorted out the details and really should be those who get the
credit - Linus ]
* tag 'printk-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
vsprintf: uninline simple_strntoull(), reorder arguments
printk: printk: Remove unnecessary statements＇len = 0;＇
printk: Reduce pr_flush() pooling time
printk: fix illegal pbufs access for !CONFIG_PRINTK
printk: nbcon: Allow drivers to mark unsafe regions and check state
printk: nbcon: Add emit function and callback function for atomic printing
printk: nbcon: Add sequence handling
printk: nbcon: Add ownership state functions
printk: nbcon: Add buffer management
printk: Make static printk buffers available to nbcon
printk: nbcon: Add acquire/release logic
printk: Add non-BKL (nbcon) console basic infrastructure
|
||
|
Linus Torvalds
|
9a719c2145 |
bitmap patches for v6.7
Hi Linus,
Please pull patches for v6.7.
This request includes "bitmap: cleanup bitmap_*_region() implementation"
series, and scattered cleanup patches.
Thanks,
Yury
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Merge tag 'bitmap-for-6.7' of https://github.com/norov/linux
Pull bitmap updates from Yury Norov:
"This includes the 'bitmap: cleanup bitmap_*_region() implementation'
series, and scattered cleanup patches"
* tag 'bitmap-for-6.7' of https://github.com/norov/linux:
buildid: reduce header file dependencies for module
bitmap: move bitmap_*_region() functions to bitmap.h
bitmap: drop _reg_op() function
bitmap: replace _reg_op(REG_OP_ISFREE) with find_next_bit()
bitmap: replace _reg_op(REG_OP_RELEASE) with bitmap_clear()
bitmap: replace _reg_op(REG_OP_ALLOC) with bitmap_set()
bitmap: fix opencoded bitmap_allocate_region()
bitmap: add test for bitmap_*_region() functions
bitmap: align __reg_op() wrappers with modern coding style
lib/bitmap: split-out string-related operations to a separate files
bitmap: Remove dead code, i.e. bitmap_copy_le()
bitmap: Fix a typo ("identify map")
cpumask: kernel-doc cleanups and additions
|
||
|
Linus Torvalds
|
8f6f76a6a2 |
As usual, lots of singleton and doubleton patches all over the tree and
there's little I can say which isn't in the individual changelogs.
The lengthier patch series are
- "kdump: use generic functions to simplify crashkernel reservation in
arch", from Baoquan He. This is mainly cleanups and consolidation of
the "crashkernel=" kernel parameter handling.
- After much discussion, David Laight's "minmax: Relax type checks in
min() and max()" is here. Hopefully reduces some typecasting and the
use of min_t() and max_t().
- A group of patches from Oleg Nesterov which clean up and slightly fix
our handling of reads from /proc/PID/task/... and which remove
task_struct.therad_group.
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Merge tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
"As usual, lots of singleton and doubleton patches all over the tree
and there's little I can say which isn't in the individual changelogs.
The lengthier patch series are
- 'kdump: use generic functions to simplify crashkernel reservation
in arch', from Baoquan He. This is mainly cleanups and
consolidation of the 'crashkernel=' kernel parameter handling
- After much discussion, David Laight's 'minmax: Relax type checks in
min() and max()' is here. Hopefully reduces some typecasting and
the use of min_t() and max_t()
- A group of patches from Oleg Nesterov which clean up and slightly
fix our handling of reads from /proc/PID/task/... and which remove
task_struct.thread_group"
* tag 'mm-nonmm-stable-2023-11-02-14-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (64 commits)
scripts/gdb/vmalloc: disable on no-MMU
scripts/gdb: fix usage of MOD_TEXT not defined when CONFIG_MODULES=n
.mailmap: add address mapping for Tomeu Vizoso
mailmap: update email address for Claudiu Beznea
tools/testing/selftests/mm/run_vmtests.sh: lower the ptrace permissions
.mailmap: map Benjamin Poirier's address
scripts/gdb: add lx_current support for riscv
ocfs2: fix a spelling typo in comment
proc: test ProtectionKey in proc-empty-vm test
proc: fix proc-empty-vm test with vsyscall
fs/proc/base.c: remove unneeded semicolon
do_io_accounting: use sig->stats_lock
do_io_accounting: use __for_each_thread()
ocfs2: replace BUG_ON() at ocfs2_num_free_extents() with ocfs2_error()
ocfs2: fix a typo in a comment
scripts/show_delta: add __main__ judgement before main code
treewide: mark stuff as __ro_after_init
fs: ocfs2: check status values
proc: test /proc/${pid}/statm
compiler.h: move __is_constexpr() to compiler.h
...
|
||
|
Linus Torvalds
|
ecae0bd517 |
Many singleton patches against the MM code. The patch series which are
included in this merge do the following:
- Kemeng Shi has contributed some compation maintenance work in the
series "Fixes and cleanups to compaction".
- Joel Fernandes has a patchset ("Optimize mremap during mutual
alignment within PMD") which fixes an obscure issue with mremap()'s
pagetable handling during a subsequent exec(), based upon an
implementation which Linus suggested.
- More DAMON/DAMOS maintenance and feature work from SeongJae Park i the
following patch series:
mm/damon: misc fixups for documents, comments and its tracepoint
mm/damon: add a tracepoint for damos apply target regions
mm/damon: provide pseudo-moving sum based access rate
mm/damon: implement DAMOS apply intervals
mm/damon/core-test: Fix memory leaks in core-test
mm/damon/sysfs-schemes: Do DAMOS tried regions update for only one apply interval
- In the series "Do not try to access unaccepted memory" Adrian Hunter
provides some fixups for the recently-added "unaccepted memory' feature.
To increase the feature's checking coverage. "Plug a few gaps where
RAM is exposed without checking if it is unaccepted memory".
- In the series "cleanups for lockless slab shrink" Qi Zheng has done
some maintenance work which is preparation for the lockless slab
shrinking code.
- Qi Zheng has redone the earlier (and reverted) attempt to make slab
shrinking lockless in the series "use refcount+RCU method to implement
lockless slab shrink".
- David Hildenbrand contributes some maintenance work for the rmap code
in the series "Anon rmap cleanups".
- Kefeng Wang does more folio conversions and some maintenance work in
the migration code. Series "mm: migrate: more folio conversion and
unification".
- Matthew Wilcox has fixed an issue in the buffer_head code which was
causing long stalls under some heavy memory/IO loads. Some cleanups
were added on the way. Series "Add and use bdev_getblk()".
- In the series "Use nth_page() in place of direct struct page
manipulation" Zi Yan has fixed a potential issue with the direct
manipulation of hugetlb page frames.
- In the series "mm: hugetlb: Skip initialization of gigantic tail
struct pages if freed by HVO" has improved our handling of gigantic
pages in the hugetlb vmmemmep optimizaton code. This provides
significant boot time improvements when significant amounts of gigantic
pages are in use.
- Matthew Wilcox has sent the series "Small hugetlb cleanups" - code
rationalization and folio conversions in the hugetlb code.
- Yin Fengwei has improved mlock()'s handling of large folios in the
series "support large folio for mlock"
- In the series "Expose swapcache stat for memcg v1" Liu Shixin has
added statistics for memcg v1 users which are available (and useful)
under memcg v2.
- Florent Revest has enhanced the MDWE (Memory-Deny-Write-Executable)
prctl so that userspace may direct the kernel to not automatically
propagate the denial to child processes. The series is named "MDWE
without inheritance".
- Kefeng Wang has provided the series "mm: convert numa balancing
functions to use a folio" which does what it says.
- In the series "mm/ksm: add fork-exec support for prctl" Stefan Roesch
makes is possible for a process to propagate KSM treatment across
exec().
- Huang Ying has enhanced memory tiering's calculation of memory
distances. This is used to permit the dax/kmem driver to use "high
bandwidth memory" in addition to Optane Data Center Persistent Memory
Modules (DCPMM). The series is named "memory tiering: calculate
abstract distance based on ACPI HMAT"
- In the series "Smart scanning mode for KSM" Stefan Roesch has
optimized KSM by teaching it to retain and use some historical
information from previous scans.
- Yosry Ahmed has fixed some inconsistencies in memcg statistics in the
series "mm: memcg: fix tracking of pending stats updates values".
- In the series "Implement IOCTL to get and optionally clear info about
PTEs" Peter Xu has added an ioctl to /proc/<pid>/pagemap which permits
us to atomically read-then-clear page softdirty state. This is mainly
used by CRIU.
- Hugh Dickins contributed the series "shmem,tmpfs: general maintenance"
- a bunch of relatively minor maintenance tweaks to this code.
- Matthew Wilcox has increased the use of the VMA lock over file-backed
page faults in the series "Handle more faults under the VMA lock". Some
rationalizations of the fault path became possible as a result.
- In the series "mm/rmap: convert page_move_anon_rmap() to
folio_move_anon_rmap()" David Hildenbrand has implemented some cleanups
and folio conversions.
- In the series "various improvements to the GUP interface" Lorenzo
Stoakes has simplified and improved the GUP interface with an eye to
providing groundwork for future improvements.
- Andrey Konovalov has sent along the series "kasan: assorted fixes and
improvements" which does those things.
- Some page allocator maintenance work from Kemeng Shi in the series
"Two minor cleanups to break_down_buddy_pages".
- In thes series "New selftest for mm" Breno Leitao has developed
another MM self test which tickles a race we had between madvise() and
page faults.
- In the series "Add folio_end_read" Matthew Wilcox provides cleanups
and an optimization to the core pagecache code.
- Nhat Pham has added memcg accounting for hugetlb memory in the series
"hugetlb memcg accounting".
- Cleanups and rationalizations to the pagemap code from Lorenzo
Stoakes, in the series "Abstract vma_merge() and split_vma()".
- Audra Mitchell has fixed issues in the procfs page_owner code's new
timestamping feature which was causing some misbehaviours. In the
series "Fix page_owner's use of free timestamps".
- Lorenzo Stoakes has fixed the handling of new mappings of sealed files
in the series "permit write-sealed memfd read-only shared mappings".
- Mike Kravetz has optimized the hugetlb vmemmap optimization in the
series "Batch hugetlb vmemmap modification operations".
- Some buffer_head folio conversions and cleanups from Matthew Wilcox in
the series "Finish the create_empty_buffers() transition".
- As a page allocator performance optimization Huang Ying has added
automatic tuning to the allocator's per-cpu-pages feature, in the series
"mm: PCP high auto-tuning".
- Roman Gushchin has contributed the patchset "mm: improve performance
of accounted kernel memory allocations" which improves their performance
by ~30% as measured by a micro-benchmark.
- folio conversions from Kefeng Wang in the series "mm: convert page
cpupid functions to folios".
- Some kmemleak fixups in Liu Shixin's series "Some bugfix about
kmemleak".
- Qi Zheng has improved our handling of memoryless nodes by keeping them
off the allocation fallback list. This is done in the series "handle
memoryless nodes more appropriately".
- khugepaged conversions from Vishal Moola in the series "Some
khugepaged folio conversions".
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Merge tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"Many singleton patches against the MM code. The patch series which are
included in this merge do the following:
- Kemeng Shi has contributed some compation maintenance work in the
series 'Fixes and cleanups to compaction'
- Joel Fernandes has a patchset ('Optimize mremap during mutual
alignment within PMD') which fixes an obscure issue with mremap()'s
pagetable handling during a subsequent exec(), based upon an
implementation which Linus suggested
- More DAMON/DAMOS maintenance and feature work from SeongJae Park i
the following patch series:
mm/damon: misc fixups for documents, comments and its tracepoint
mm/damon: add a tracepoint for damos apply target regions
mm/damon: provide pseudo-moving sum based access rate
mm/damon: implement DAMOS apply intervals
mm/damon/core-test: Fix memory leaks in core-test
mm/damon/sysfs-schemes: Do DAMOS tried regions update for only one apply interval
- In the series 'Do not try to access unaccepted memory' Adrian
Hunter provides some fixups for the recently-added 'unaccepted
memory' feature. To increase the feature's checking coverage. 'Plug
a few gaps where RAM is exposed without checking if it is
unaccepted memory'
- In the series 'cleanups for lockless slab shrink' Qi Zheng has done
some maintenance work which is preparation for the lockless slab
shrinking code
- Qi Zheng has redone the earlier (and reverted) attempt to make slab
shrinking lockless in the series 'use refcount+RCU method to
implement lockless slab shrink'
- David Hildenbrand contributes some maintenance work for the rmap
code in the series 'Anon rmap cleanups'
- Kefeng Wang does more folio conversions and some maintenance work
in the migration code. Series 'mm: migrate: more folio conversion
and unification'
- Matthew Wilcox has fixed an issue in the buffer_head code which was
causing long stalls under some heavy memory/IO loads. Some cleanups
were added on the way. Series 'Add and use bdev_getblk()'
- In the series 'Use nth_page() in place of direct struct page
manipulation' Zi Yan has fixed a potential issue with the direct
manipulation of hugetlb page frames
- In the series 'mm: hugetlb: Skip initialization of gigantic tail
struct pages if freed by HVO' has improved our handling of gigantic
pages in the hugetlb vmmemmep optimizaton code. This provides
significant boot time improvements when significant amounts of
gigantic pages are in use
- Matthew Wilcox has sent the series 'Small hugetlb cleanups' - code
rationalization and folio conversions in the hugetlb code
- Yin Fengwei has improved mlock()'s handling of large folios in the
series 'support large folio for mlock'
- In the series 'Expose swapcache stat for memcg v1' Liu Shixin has
added statistics for memcg v1 users which are available (and
useful) under memcg v2
- Florent Revest has enhanced the MDWE (Memory-Deny-Write-Executable)
prctl so that userspace may direct the kernel to not automatically
propagate the denial to child processes. The series is named 'MDWE
without inheritance'
- Kefeng Wang has provided the series 'mm: convert numa balancing
functions to use a folio' which does what it says
- In the series 'mm/ksm: add fork-exec support for prctl' Stefan
Roesch makes is possible for a process to propagate KSM treatment
across exec()
- Huang Ying has enhanced memory tiering's calculation of memory
distances. This is used to permit the dax/kmem driver to use 'high
bandwidth memory' in addition to Optane Data Center Persistent
Memory Modules (DCPMM). The series is named 'memory tiering:
calculate abstract distance based on ACPI HMAT'
- In the series 'Smart scanning mode for KSM' Stefan Roesch has
optimized KSM by teaching it to retain and use some historical
information from previous scans
- Yosry Ahmed has fixed some inconsistencies in memcg statistics in
the series 'mm: memcg: fix tracking of pending stats updates
values'
- In the series 'Implement IOCTL to get and optionally clear info
about PTEs' Peter Xu has added an ioctl to /proc/<pid>/pagemap
which permits us to atomically read-then-clear page softdirty
state. This is mainly used by CRIU
- Hugh Dickins contributed the series 'shmem,tmpfs: general
maintenance', a bunch of relatively minor maintenance tweaks to
this code
- Matthew Wilcox has increased the use of the VMA lock over
file-backed page faults in the series 'Handle more faults under the
VMA lock'. Some rationalizations of the fault path became possible
as a result
- In the series 'mm/rmap: convert page_move_anon_rmap() to
folio_move_anon_rmap()' David Hildenbrand has implemented some
cleanups and folio conversions
- In the series 'various improvements to the GUP interface' Lorenzo
Stoakes has simplified and improved the GUP interface with an eye
to providing groundwork for future improvements
- Andrey Konovalov has sent along the series 'kasan: assorted fixes
and improvements' which does those things
- Some page allocator maintenance work from Kemeng Shi in the series
'Two minor cleanups to break_down_buddy_pages'
- In thes series 'New selftest for mm' Breno Leitao has developed
another MM self test which tickles a race we had between madvise()
and page faults
- In the series 'Add folio_end_read' Matthew Wilcox provides cleanups
and an optimization to the core pagecache code
- Nhat Pham has added memcg accounting for hugetlb memory in the
series 'hugetlb memcg accounting'
- Cleanups and rationalizations to the pagemap code from Lorenzo
Stoakes, in the series 'Abstract vma_merge() and split_vma()'
- Audra Mitchell has fixed issues in the procfs page_owner code's new
timestamping feature which was causing some misbehaviours. In the
series 'Fix page_owner's use of free timestamps'
- Lorenzo Stoakes has fixed the handling of new mappings of sealed
files in the series 'permit write-sealed memfd read-only shared
mappings'
- Mike Kravetz has optimized the hugetlb vmemmap optimization in the
series 'Batch hugetlb vmemmap modification operations'
- Some buffer_head folio conversions and cleanups from Matthew Wilcox
in the series 'Finish the create_empty_buffers() transition'
- As a page allocator performance optimization Huang Ying has added
automatic tuning to the allocator's per-cpu-pages feature, in the
series 'mm: PCP high auto-tuning'
- Roman Gushchin has contributed the patchset 'mm: improve
performance of accounted kernel memory allocations' which improves
their performance by ~30% as measured by a micro-benchmark
- folio conversions from Kefeng Wang in the series 'mm: convert page
cpupid functions to folios'
- Some kmemleak fixups in Liu Shixin's series 'Some bugfix about
kmemleak'
- Qi Zheng has improved our handling of memoryless nodes by keeping
them off the allocation fallback list. This is done in the series
'handle memoryless nodes more appropriately'
- khugepaged conversions from Vishal Moola in the series 'Some
khugepaged folio conversions'"
[ bcachefs conflicts with the dynamically allocated shrinkers have been
resolved as per Stephen Rothwell in
https://lore.kernel.org/all/20230913093553.4290421e@canb.auug.org.au/
with help from Qi Zheng.
The clone3 test filtering conflict was half-arsed by yours truly ]
* tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (406 commits)
mm/damon/sysfs: update monitoring target regions for online input commit
mm/damon/sysfs: remove requested targets when online-commit inputs
selftests: add a sanity check for zswap
Documentation: maple_tree: fix word spelling error
mm/vmalloc: fix the unchecked dereference warning in vread_iter()
zswap: export compression failure stats
Documentation: ubsan: drop "the" from article title
mempolicy: migration attempt to match interleave nodes
mempolicy: mmap_lock is not needed while migrating folios
mempolicy: alloc_pages_mpol() for NUMA policy without vma
mm: add page_rmappable_folio() wrapper
mempolicy: remove confusing MPOL_MF_LAZY dead code
mempolicy: mpol_shared_policy_init() without pseudo-vma
mempolicy trivia: use pgoff_t in shared mempolicy tree
mempolicy trivia: slightly more consistent naming
mempolicy trivia: delete those ancient pr_debug()s
mempolicy: fix migrate_pages(2) syscall return nr_failed
kernfs: drop shared NUMA mempolicy hooks
hugetlbfs: drop shared NUMA mempolicy pretence
mm/damon/sysfs-test: add a unit test for damon_sysfs_set_targets()
...
|
||
|
Dan Williams
|
4b92894064 |
lib/fw_table: Remove acpi_parse_entries_array() export
Stephen reports that the ACPI helper library rework,
CONFIG_FIRMWARE_TABLE, introduces a new compiler warning:
WARNING: modpost: vmlinux: acpi_parse_entries_array: EXPORT_SYMBOL used
for init symbol. Remove __init or EXPORT_SYMBOL.
Delete this export as it turns out it is unneeded, and future work wraps
this in another exported helper. Note that in general
EXPORT_SYMBOL_ACPI_LIB() is needed for exporting symbols that are marked
__init_or_acpilib, but in this case no export is required.
Fixes:
|
||
|
Christophe JAILLET
|
70a9affa93 |
seq_buf: Export seq_buf_puts()
Mark seq_buf_puts() which is part of the seq_buf API to be exported to kernel loadable GPL modules. Link: https://lkml.kernel.org/r/b9e3737f66ec2450221b492048ce0d9c65c84953.1698861216.git.christophe.jaillet@wanadoo.fr Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Christophe JAILLET
|
685b38c765 |
seq_buf: Export seq_buf_putc()
Mark seq_buf_putc() which is part of the seq_buf API to be exported to kernel loadable GPL modules. Link: https://lkml.kernel.org/r/5c9a5ed97ac37dbdcd9c1e7bcbdec9ac166e79be.1698861216.git.christophe.jaillet@wanadoo.fr Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Linus Torvalds
|
5eda8f2537 |
linux_kselftest-kunit-6.7-rc1
This kunit update for Linux 6.7-rc1 consists of: -- string-stream testing enhancements -- several fixes memory leaks -- fix to reset status during parameter handling -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmVClgAACgkQCwJExA0N QxwXhA//Yn2nL5an6A9ZQire8S0HmxqdAwgROBVb7AaCkJ9L4cY+BYyt+VzTkaGO DJ3x5TwBi6BUkDSmAjppu+KhSQqbRvtmC5xIwH5zbSqKesftklJDhNC6SBd8ZFSC W5w+wwK8xxqFni2NAQu/ZMHrxgllUlR7ZbCE31U/IUYvW4NP4izz9oX3rqkvgjEU aZOQpe3GBVn3jkX+gYopoCqegbSiobjeE83cq8NwFX22rxA8FRDKeJF6/5fv3N1h vJF0KR14QIxc+Y50KHLNMpCXLIM8/IXEiPXd0bqzFVEB+/uyikM8BRPQRHaq9PfA VhaRSDAe9rYgAQYZcayAPLHlrsrFXS/gFs2x15QxzeLfrke7uJg1jEa8CoxV50f3 ImAOxbtxXcW0Oz0lU4J5iX6Kq1gwhv/GP/Rgr8Cf2xMo4dWy3k6/dt8Ep7FwuwWk +ReDNPBw+FMrRLN3hWTXr2Y7k4avOmCDmjj5L1YVVG9yug0WI4ZD3OelbcXtzAA6 XUAuB/EjCQYNB8XrOGd7+xX8eZraA/68xgf9gtNM3ycoIQ2UAfGnQnaZm3BXjvGk zjnvG8JpaCBObvonK22y1t60Ive1PbZgpdtU2Za1QTUjZWUPPudLHr7oU30crOaW +aqtCam6UGU6GlsiMWzbN8cv/q5fo/gCWkfKLGEry2NCz/71mwc= =Nn2t -----END PGP SIGNATURE----- Merge tag 'linux_kselftest-kunit-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kunit updates from Shuah Khan: - string-stream testing enhancements - several fixes memory leaks - fix to reset status during parameter handling * tag 'linux_kselftest-kunit-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: test: Fix the possible memory leak in executor_test kunit: Fix possible memory leak in kunit_filter_suites() kunit: Fix the wrong kfree of copy for kunit_filter_suites() kunit: Fix missed memory release in kunit_free_suite_set() kunit: Reset test status on each param iteration kunit: string-stream: Test performance of string_stream kunit: Use string_stream for test log kunit: string-stream: Add tests for freeing resource-managed string_stream kunit: string-stream: Decouple string_stream from kunit kunit: string-stream: Add kunit_alloc_string_stream() kunit: Don't use a managed alloc in is_literal() kunit: string-stream-test: Add cases for string_stream newline appending kunit: string-stream: Add option to make all lines end with newline kunit: string-stream: Improve testing of string_stream kunit: string-stream: Don't create a fragment for empty strings |
||
|
Linus Torvalds
|
05bf73aa27 |
Probes updates for v6.7:
- cleanups:
. kprobes: Fixes typo in kprobes samples.
. tracing/eprobes: Remove 'break' after return.
- kretprobe/fprobe performance improvements:
. lib: Introduce new `objpool`, which is a high performance lockless
object queue. This uses per-cpu ring array to allocate/release
objects from the pre-allocated object pool. Since the index of ring
array is a 32bit sequential counter, we can retry to push/pop the
object pointer from the ring without lock (as seq-lock does).
. lib: Add an objpool test module to test the functionality and
evaluate the performance under some circumstances.
. kprobes/fprobe: Improve kretprobe and rethook scalability
performance with objpool.
This improves both legacy kretprobe and fprobe exit handler (which
is based on rethook) to be scalable on SMP systems. Even with
8-threads parallel test, it shows a great scalability improvement.
. Remove unneeded freelist.h which is replaced by objpool.
. objpool: Add maintainers entry for the objpool.
. objpool: Fix to remove unused include header lines.
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Merge tag 'probes-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes updates from Masami Hiramatsu:
"Cleanups:
- kprobes: Fixes typo in kprobes samples
- tracing/eprobes: Remove 'break' after return
kretprobe/fprobe performance improvements:
- lib: Introduce new `objpool`, which is a high performance lockless
object queue. This uses per-cpu ring array to allocate/release
objects from the pre-allocated object pool.
Since the index of ring array is a 32bit sequential counter, we can
retry to push/pop the object pointer from the ring without lock (as
seq-lock does)
- lib: Add an objpool test module to test the functionality and
evaluate the performance under some circumstances
- kprobes/fprobe: Improve kretprobe and rethook scalability
performance with objpool.
This improves both legacy kretprobe and fprobe exit handler (which
is based on rethook) to be scalable on SMP systems. Even with
8-threads parallel test, it shows a great scalability improvement
- Remove unneeded freelist.h which is replaced by objpool
- objpool: Add maintainers entry for the objpool
- objpool: Fix to remove unused include header lines"
* tag 'probes-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
kprobes: unused header files removed
MAINTAINERS: objpool added
kprobes: freelist.h removed
kprobes: kretprobe scalability improvement
lib: objpool test module added
lib: objpool added: ring-array based lockless MPMC
tracing/eprobe: drop unneeded breaks
samples: kprobes: Fixes a typo
|
||
|
Linus Torvalds
|
1e0c505e13 |
asm-generic updates for v6.7
The ia64 architecture gets its well-earned retirement as planned, now that there is one last (mostly) working release that will be maintained as an LTS kernel. The architecture specific system call tables are updated for the added map_shadow_stack() syscall and to remove references to the long-gone sys_lookup_dcookie() syscall. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmVC40IACgkQYKtH/8kJ Uidhmw/9EX+aWSXGoObJ3fngaNSMw+PmrEuP8qEKBHxfKHcCdX3hc451Oh4GlhaQ tru91pPwgNvN2/rfoKusxT+V4PemGIzfNni/04rp+P0kvmdw5otQ2yNhsQNsfVmq XGWvkxF4P2GO6bkjjfR/1dDq7GtlyXtwwPDKeLbYb6TnJOZjtx+EAN27kkfSn1Ms R4Sa3zJ+DfHUmHL5S9g+7UD/CZ5GfKNmIskI4Mz5GsfoUz/0iiU+Bge/9sdcdSJQ kmbLy5YnVzfooLZ3TQmBFsO3iAMWb0s/mDdtyhqhTVmTUshLolkPYyKnPFvdupyv shXcpEST2XJNeaDRnL2K4zSCdxdbnCZHDpjfl9wfioBg7I8NfhXKpf1jYZHH1de4 LXq8ndEFEOVQw/zSpYWfQq1sux8Jiqr+UK/ukbVeFWiGGIUs91gEWtPAf8T0AZo9 ujkJvaWGl98O1g5wmBu0/dAR6QcFJMDfVwbmlIFpU8O+MEaz6X8mM+O5/T0IyTcD eMbAUjj4uYcU7ihKzHEv/0SS9Of38kzff67CLN5k8wOP/9NlaGZ78o1bVle9b52A BdhrsAefFiWHp1jT6Y9Rg4HOO/TguQ9e6EWSKOYFulsiLH9LEFaB9RwZLeLytV0W vlAgY9rUW77g1OJcb7DoNv33nRFuxsKqsnz3DEIXtgozo9CzbYI= =H1vH -----END PGP SIGNATURE----- Merge tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull ia64 removal and asm-generic updates from Arnd Bergmann: - The ia64 architecture gets its well-earned retirement as planned, now that there is one last (mostly) working release that will be maintained as an LTS kernel. - The architecture specific system call tables are updated for the added map_shadow_stack() syscall and to remove references to the long-gone sys_lookup_dcookie() syscall. * tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: hexagon: Remove unusable symbols from the ptrace.h uapi asm-generic: Fix spelling of architecture arch: Reserve map_shadow_stack() syscall number for all architectures syscalls: Cleanup references to sys_lookup_dcookie() Documentation: Drop or replace remaining mentions of IA64 lib/raid6: Drop IA64 support Documentation: Drop IA64 from feature descriptions kernel: Drop IA64 support from sig_fault handlers arch: Remove Itanium (IA-64) architecture |
||
|
Linus Torvalds
|
385903a7ec |
SoC driver updates for 6.7
The highlights for the driver support this time are
- Qualcomm platforms gain support for the Qualcomm Secure Execution
Environment firmware interface to access EFI variables on certain
devices, and new features for multiple platform and firmware drivers.
- Arm FF-A firmware support gains support for v1.1 specification features,
in particular notification and memory transaction descriptor changes.
- SCMI firmware support now support v3.2 features for clock and DVFS
configuration and a new transport for Qualcomm platforms.
- Minor cleanups and bugfixes are added to pretty much all the active
platforms: qualcomm, broadcom, dove, ti-k3, rockchip, sifive, amlogic,
atmel, tegra, aspeed, vexpress, mediatek, samsung and more.
In particular, this contains portions of the treewide conversion to
use __counted_by annotations and the device_get_match_data helper.
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Merge tag 'soc-drivers-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC driver updates from Arnd Bergmann:
"The highlights for the driver support this time are
- Qualcomm platforms gain support for the Qualcomm Secure Execution
Environment firmware interface to access EFI variables on certain
devices, and new features for multiple platform and firmware
drivers.
- Arm FF-A firmware support gains support for v1.1 specification
features, in particular notification and memory transaction
descriptor changes.
- SCMI firmware support now support v3.2 features for clock and DVFS
configuration and a new transport for Qualcomm platforms.
- Minor cleanups and bugfixes are added to pretty much all the active
platforms: qualcomm, broadcom, dove, ti-k3, rockchip, sifive,
amlogic, atmel, tegra, aspeed, vexpress, mediatek, samsung and
more.
In particular, this contains portions of the treewide conversion to
use __counted_by annotations and the device_get_match_data helper"
* tag 'soc-drivers-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (156 commits)
soc: qcom: pmic_glink_altmode: Print return value on error
firmware: qcom: scm: remove unneeded 'extern' specifiers
firmware: qcom: scm: add a missing forward declaration for struct device
firmware: qcom: move Qualcomm code into its own directory
soc: samsung: exynos-chipid: Convert to platform remove callback returning void
soc: qcom: apr: Add __counted_by for struct apr_rx_buf and use struct_size()
soc: qcom: pmic_glink: fix connector type to be DisplayPort
soc: ti: k3-socinfo: Avoid overriding return value
soc: ti: k3-socinfo: Fix typo in bitfield documentation
soc: ti: knav_qmss_queue: Use device_get_match_data()
firmware: ti_sci: Use device_get_match_data()
firmware: qcom: qseecom: add missing include guards
soc/pxa: ssp: Convert to platform remove callback returning void
soc/mediatek: mtk-mmsys: Convert to platform remove callback returning void
soc/mediatek: mtk-devapc: Convert to platform remove callback returning void
soc/loongson: loongson2_guts: Convert to platform remove callback returning void
soc/litex: litex_soc_ctrl: Convert to platform remove callback returning void
soc/ixp4xx: ixp4xx-qmgr: Convert to platform remove callback returning void
soc/ixp4xx: ixp4xx-npe: Convert to platform remove callback returning void
soc/hisilicon: kunpeng_hccs: Convert to platform remove callback returning void
...
|
||
|
Alexey Dobriyan
|
72fcce70fa |
vsprintf: uninline simple_strntoull(), reorder arguments
* uninline simple_strntoull(), gcc overinlines and this function is not performance critical * reorder arguments, so that appending INT_MAX as 4th argument generates very efficient tail call Space savings: add/remove: 1/0 grow/shrink: 0/3 up/down: 27/-179 (-152) Function old new delta simple_strntoll - 27 +27 simple_strtoull 15 10 -5 simple_strtoll 41 7 -34 vsscanf 1930 1790 -140 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/all/82a2af6e-9b6c-4a09-89d7-ca90cc1cdad1@p183/ |
||
|
Linus Torvalds
|
89ed67ef12 |
Networking changes for 6.7.
Core & protocols
----------------
- Support usec resolution of TCP timestamps, enabled selectively by
a route attribute.
- Defer regular TCP ACK while processing socket backlog, try to send
a cumulative ACK at the end. Increase single TCP flow performance
on a 200Gbit NIC by 20% (100Gbit -> 120Gbit).
- The Fair Queuing (FQ) packet scheduler:
- add built-in 3 band prio / WRR scheduling
- support bypass if the qdisc is mostly idle (5% speed up for TCP RR)
- improve inactive flow reporting
- optimize the layout of structures for better cache locality
- Support TCP Authentication Option (RFC 5925, TCP-AO), a more modern
replacement for the old MD5 option.
- Add more retransmission timeout (RTO) related statistics to TCP_INFO.
- Support sending fragmented skbs over vsock sockets.
- Make sure we send SIGPIPE for vsock sockets if socket was shutdown().
- Add sysctl for ignoring lower limit on lifetime in Router
Advertisement PIO, based on an in-progress IETF draft.
- Add sysctl to control activation of TCP ping-pong mode.
- Add sysctl to make connection timeout in MPTCP configurable.
- Support rcvlowat and notsent_lowat on MPTCP sockets, to help apps
limit the number of wakeups.
- Support netlink GET for MDB (multicast forwarding), allowing user
space to request a single MDB entry instead of dumping the entire
table.
- Support selective FDB flushing in the VXLAN tunnel driver.
- Allow limiting learned FDB entries in bridges, prevent OOM attacks.
- Allow controlling via configfs netconsole targets which were created
via the kernel cmdline at boot, rather than via configfs at runtime.
- Support multiple PTP timestamp event queue readers with different
filters.
- MCTP over I3C.
BPF
---
- Add new veth-like netdevice where BPF program defines the logic
of the xmit routine. It can operate in L3 and L2 mode.
- Support exceptions - allow asserting conditions which should
never be true but are hard for the verifier to infer.
With some extra flexibility around handling of the exit / failure.
https://lwn.net/Articles/938435/
- Add support for local per-cpu kptr, allow allocating and storing
per-cpu objects in maps. Access to those objects operates on
the value for the current CPU. This allows to deprecate local
one-off implementations of per-CPU storage like
BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE maps.
- Extend cgroup BPF sockaddr hooks for UNIX sockets. The use case is
for systemd to re-implement the LogNamespace feature which allows
running multiple instances of systemd-journald to process the logs
of different services.
- Enable open-coded task_vma iteration, after maple tree conversion
made it hard to directly walk VMAs in tracing programs.
- Add open-coded task, css_task and css iterator support.
One of the use cases is customizable OOM victim selection via BPF.
- Allow source address selection with bpf_*_fib_lookup().
- Add ability to pin BPF timer to the current CPU.
- Prevent creation of infinite loops by combining tail calls and
fentry/fexit programs.
- Add missed stats for kprobes to retrieve the number of missed kprobe
executions and subsequent executions of BPF programs.
- Inherit system settings for CPU security mitigations.
- Add BPF v4 CPU instruction support for arm32 and s390x.
Changes to common code
----------------------
- overflow: add DEFINE_FLEX() for on-stack definition of structs
with flexible array members.
- Process doc update with more guidance for reviewers.
Driver API
----------
- Simplify locking in WiFi (cfg80211 and mac80211 layers), use wiphy
mutex in most places and remove a lot of smaller locks.
- Create a common DPLL configuration API. Allow configuring
and querying state of PLL circuits used for clock syntonization,
in network time distribution.
- Unify fragmented and full page allocation APIs in page pool code.
Let drivers be ignorant of PAGE_SIZE.
- Rework PHY state machine to avoid races with calls to phy_stop().
- Notify DSA drivers of MAC address changes on user ports, improve
correctness of offloads which depend on matching port MAC addresses.
- Allow antenna control on injected WiFi frames.
- Reduce the number of variants of napi_schedule().
- Simplify error handling when composing devlink health messages.
Misc
----
- A lot of KCSAN data race "fixes", from Eric.
- A lot of __counted_by() annotations, from Kees.
- A lot of strncpy -> strscpy and printf format fixes.
- Replace master/slave terminology with conduit/user in DSA drivers.
- Handful of KUnit tests for netdev and WiFi core.
Removed
-------
- AppleTalk COPS.
- AppleTalk ipddp.
- TI AR7 CPMAC Ethernet driver.
Drivers
-------
- Ethernet high-speed NICs:
- Intel (100G, ice, idpf):
- add a driver for the Intel E2000 IPUs
- make CRC/FCS stripping configurable
- cross-timestamping for E823 devices
- basic support for E830 devices
- use aux-bus for managing client drivers
- i40e: report firmware versions via devlink
- nVidia/Mellanox:
- support 4-port NICs
- increase max number of channels to 256
- optimize / parallelize SF creation flow
- Broadcom (bnxt):
- enhance NIC temperature reporting
- support PAM4 speeds and lane configuration
- Marvell OcteonTX2:
- PTP pulse-per-second output support
- enable hardware timestamping for VFs
- Solarflare/AMD:
- conntrack NAT offload and offload for tunnels
- Wangxun (ngbe/txgbe):
- expose HW statistics
- Pensando/AMD:
- support PCI level reset
- narrow down the condition under which skbs are linearized
- Netronome/Corigine (nfp):
- support CHACHA20-POLY1305 crypto in IPsec offload
- Ethernet NICs embedded, slower, virtual:
- Synopsys (stmmac):
- add Loongson-1 SoC support
- enable use of HW queues with no offload capabilities
- enable PPS input support on all 5 channels
- increase TX coalesce timer to 5ms
- RealTek USB (r8152): improve efficiency of Rx by using GRO frags
- xen: support SW packet timestamping
- add drivers for implementations based on TI's PRUSS (AM64x EVM)
- nVidia/Mellanox Ethernet datacenter switches:
- avoid poor HW resource use on Spectrum-4 by better block selection
for IPv6 multicast forwarding and ordering of blocks in ACL region
- Ethernet embedded switches:
- Microchip:
- support configuring the drive strength for EMI compliance
- ksz9477: partial ACL support
- ksz9477: HSR offload
- ksz9477: Wake on LAN
- Realtek:
- rtl8366rb: respect device tree config of the CPU port
- Ethernet PHYs:
- support Broadcom BCM5221 PHYs
- TI dp83867: support hardware LED blinking
- CAN:
- add support for Linux-PHY based CAN transceivers
- at91_can: clean up and use rx-offload helpers
- WiFi:
- MediaTek (mt76):
- new sub-driver for mt7925 USB/PCIe devices
- HW wireless <> Ethernet bridging in MT7988 chips
- mt7603/mt7628 stability improvements
- Qualcomm (ath12k):
- WCN7850:
- enable 320 MHz channels in 6 GHz band
- hardware rfkill support
- enable IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS
to make scan faster
- read board data variant name from SMBIOS
- QCN9274: mesh support
- RealTek (rtw89):
- TDMA-based multi-channel concurrency (MCC)
- Silicon Labs (wfx):
- Remain-On-Channel (ROC) support
- Bluetooth:
- ISO: many improvements for broadcast support
- mark BCM4378/BCM4387 as BROKEN_LE_CODED
- add support for QCA2066
- btmtksdio: enable Bluetooth wakeup from suspend
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Support usec resolution of TCP timestamps, enabled selectively by a
route attribute.
- Defer regular TCP ACK while processing socket backlog, try to send
a cumulative ACK at the end. Increase single TCP flow performance
on a 200Gbit NIC by 20% (100Gbit -> 120Gbit).
- The Fair Queuing (FQ) packet scheduler:
- add built-in 3 band prio / WRR scheduling
- support bypass if the qdisc is mostly idle (5% speed up for TCP RR)
- improve inactive flow reporting
- optimize the layout of structures for better cache locality
- Support TCP Authentication Option (RFC 5925, TCP-AO), a more modern
replacement for the old MD5 option.
- Add more retransmission timeout (RTO) related statistics to
TCP_INFO.
- Support sending fragmented skbs over vsock sockets.
- Make sure we send SIGPIPE for vsock sockets if socket was
shutdown().
- Add sysctl for ignoring lower limit on lifetime in Router
Advertisement PIO, based on an in-progress IETF draft.
- Add sysctl to control activation of TCP ping-pong mode.
- Add sysctl to make connection timeout in MPTCP configurable.
- Support rcvlowat and notsent_lowat on MPTCP sockets, to help apps
limit the number of wakeups.
- Support netlink GET for MDB (multicast forwarding), allowing user
space to request a single MDB entry instead of dumping the entire
table.
- Support selective FDB flushing in the VXLAN tunnel driver.
- Allow limiting learned FDB entries in bridges, prevent OOM attacks.
- Allow controlling via configfs netconsole targets which were
created via the kernel cmdline at boot, rather than via configfs at
runtime.
- Support multiple PTP timestamp event queue readers with different
filters.
- MCTP over I3C.
BPF:
- Add new veth-like netdevice where BPF program defines the logic of
the xmit routine. It can operate in L3 and L2 mode.
- Support exceptions - allow asserting conditions which should never
be true but are hard for the verifier to infer. With some extra
flexibility around handling of the exit / failure:
https://lwn.net/Articles/938435/
- Add support for local per-cpu kptr, allow allocating and storing
per-cpu objects in maps. Access to those objects operates on the
value for the current CPU.
This allows to deprecate local one-off implementations of per-CPU
storage like BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE maps.
- Extend cgroup BPF sockaddr hooks for UNIX sockets. The use case is
for systemd to re-implement the LogNamespace feature which allows
running multiple instances of systemd-journald to process the logs
of different services.
- Enable open-coded task_vma iteration, after maple tree conversion
made it hard to directly walk VMAs in tracing programs.
- Add open-coded task, css_task and css iterator support. One of the
use cases is customizable OOM victim selection via BPF.
- Allow source address selection with bpf_*_fib_lookup().
- Add ability to pin BPF timer to the current CPU.
- Prevent creation of infinite loops by combining tail calls and
fentry/fexit programs.
- Add missed stats for kprobes to retrieve the number of missed
kprobe executions and subsequent executions of BPF programs.
- Inherit system settings for CPU security mitigations.
- Add BPF v4 CPU instruction support for arm32 and s390x.
Changes to common code:
- overflow: add DEFINE_FLEX() for on-stack definition of structs with
flexible array members.
- Process doc update with more guidance for reviewers.
Driver API:
- Simplify locking in WiFi (cfg80211 and mac80211 layers), use wiphy
mutex in most places and remove a lot of smaller locks.
- Create a common DPLL configuration API. Allow configuring and
querying state of PLL circuits used for clock syntonization, in
network time distribution.
- Unify fragmented and full page allocation APIs in page pool code.
Let drivers be ignorant of PAGE_SIZE.
- Rework PHY state machine to avoid races with calls to phy_stop().
- Notify DSA drivers of MAC address changes on user ports, improve
correctness of offloads which depend on matching port MAC
addresses.
- Allow antenna control on injected WiFi frames.
- Reduce the number of variants of napi_schedule().
- Simplify error handling when composing devlink health messages.
Misc:
- A lot of KCSAN data race "fixes", from Eric.
- A lot of __counted_by() annotations, from Kees.
- A lot of strncpy -> strscpy and printf format fixes.
- Replace master/slave terminology with conduit/user in DSA drivers.
- Handful of KUnit tests for netdev and WiFi core.
Removed:
- AppleTalk COPS.
- AppleTalk ipddp.
- TI AR7 CPMAC Ethernet driver.
Drivers:
- Ethernet high-speed NICs:
- Intel (100G, ice, idpf):
- add a driver for the Intel E2000 IPUs
- make CRC/FCS stripping configurable
- cross-timestamping for E823 devices
- basic support for E830 devices
- use aux-bus for managing client drivers
- i40e: report firmware versions via devlink
- nVidia/Mellanox:
- support 4-port NICs
- increase max number of channels to 256
- optimize / parallelize SF creation flow
- Broadcom (bnxt):
- enhance NIC temperature reporting
- support PAM4 speeds and lane configuration
- Marvell OcteonTX2:
- PTP pulse-per-second output support
- enable hardware timestamping for VFs
- Solarflare/AMD:
- conntrack NAT offload and offload for tunnels
- Wangxun (ngbe/txgbe):
- expose HW statistics
- Pensando/AMD:
- support PCI level reset
- narrow down the condition under which skbs are linearized
- Netronome/Corigine (nfp):
- support CHACHA20-POLY1305 crypto in IPsec offload
- Ethernet NICs embedded, slower, virtual:
- Synopsys (stmmac):
- add Loongson-1 SoC support
- enable use of HW queues with no offload capabilities
- enable PPS input support on all 5 channels
- increase TX coalesce timer to 5ms
- RealTek USB (r8152): improve efficiency of Rx by using GRO frags
- xen: support SW packet timestamping
- add drivers for implementations based on TI's PRUSS (AM64x EVM)
- nVidia/Mellanox Ethernet datacenter switches:
- avoid poor HW resource use on Spectrum-4 by better block
selection for IPv6 multicast forwarding and ordering of blocks
in ACL region
- Ethernet embedded switches:
- Microchip:
- support configuring the drive strength for EMI compliance
- ksz9477: partial ACL support
- ksz9477: HSR offload
- ksz9477: Wake on LAN
- Realtek:
- rtl8366rb: respect device tree config of the CPU port
- Ethernet PHYs:
- support Broadcom BCM5221 PHYs
- TI dp83867: support hardware LED blinking
- CAN:
- add support for Linux-PHY based CAN transceivers
- at91_can: clean up and use rx-offload helpers
- WiFi:
- MediaTek (mt76):
- new sub-driver for mt7925 USB/PCIe devices
- HW wireless <> Ethernet bridging in MT7988 chips
- mt7603/mt7628 stability improvements
- Qualcomm (ath12k):
- WCN7850:
- enable 320 MHz channels in 6 GHz band
- hardware rfkill support
- enable IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS to
make scan faster
- read board data variant name from SMBIOS
- QCN9274: mesh support
- RealTek (rtw89):
- TDMA-based multi-channel concurrency (MCC)
- Silicon Labs (wfx):
- Remain-On-Channel (ROC) support
- Bluetooth:
- ISO: many improvements for broadcast support
- mark BCM4378/BCM4387 as BROKEN_LE_CODED
- add support for QCA2066
- btmtksdio: enable Bluetooth wakeup from suspend"
* tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1816 commits)
net: pcs: xpcs: Add 2500BASE-X case in get state for XPCS drivers
net: bpf: Use sockopt_lock_sock() in ip_sock_set_tos()
net: mana: Use xdp_set_features_flag instead of direct assignment
vxlan: Cleanup IFLA_VXLAN_PORT_RANGE entry in vxlan_get_size()
iavf: delete the iavf client interface
iavf: add a common function for undoing the interrupt scheme
iavf: use unregister_netdev
iavf: rely on netdev's own registered state
iavf: fix the waiting time for initial reset
iavf: in iavf_down, don't queue watchdog_task if comms failed
iavf: simplify mutex_trylock+sleep loops
iavf: fix comments about old bit locks
doc/netlink: Update schema to support cmd-cnt-name and cmd-max-name
tools: ynl: introduce option to process unknown attributes or types
ipvlan: properly track tx_errors
netdevsim: Block until all devices are released
nfp: using napi_build_skb() to replace build_skb()
net: dsa: microchip: ksz9477: Fix spelling mistake "Enery" -> "Energy"
net: dsa: microchip: Ensure Stable PME Pin State for Wake-on-LAN
net: dsa: microchip: Refactor switch shutdown routine for WoL preparation
...
|
||
|
Linus Torvalds
|
befaa609f4 |
hardening updates for v6.7-rc1
- Add LKDTM test for stuck CPUs (Mark Rutland)
- Improve LKDTM selftest behavior under UBSan (Ricardo Cañuelo)
- Refactor more 1-element arrays into flexible arrays (Gustavo A. R. Silva)
- Analyze and replace strlcpy and strncpy uses (Justin Stitt, Azeem Shaikh)
- Convert group_info.usage to refcount_t (Elena Reshetova)
- Add __counted_by annotations (Kees Cook, Gustavo A. R. Silva)
- Add Kconfig fragment for basic hardening options (Kees Cook, Lukas Bulwahn)
- Fix randstruct GCC plugin performance mode to stay in groups (Kees Cook)
- Fix strtomem() compile-time check for small sources (Kees Cook)
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Merge tag 'hardening-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
"One of the more voluminous set of changes is for adding the new
__counted_by annotation[1] to gain run-time bounds checking of
dynamically sized arrays with UBSan.
- Add LKDTM test for stuck CPUs (Mark Rutland)
- Improve LKDTM selftest behavior under UBSan (Ricardo Cañuelo)
- Refactor more 1-element arrays into flexible arrays (Gustavo A. R.
Silva)
- Analyze and replace strlcpy and strncpy uses (Justin Stitt, Azeem
Shaikh)
- Convert group_info.usage to refcount_t (Elena Reshetova)
- Add __counted_by annotations (Kees Cook, Gustavo A. R. Silva)
- Add Kconfig fragment for basic hardening options (Kees Cook, Lukas
Bulwahn)
- Fix randstruct GCC plugin performance mode to stay in groups (Kees
Cook)
- Fix strtomem() compile-time check for small sources (Kees Cook)"
* tag 'hardening-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (56 commits)
hwmon: (acpi_power_meter) replace open-coded kmemdup_nul
reset: Annotate struct reset_control_array with __counted_by
kexec: Annotate struct crash_mem with __counted_by
virtio_console: Annotate struct port_buffer with __counted_by
ima: Add __counted_by for struct modsig and use struct_size()
MAINTAINERS: Include stackleak paths in hardening entry
string: Adjust strtomem() logic to allow for smaller sources
hardening: x86: drop reference to removed config AMD_IOMMU_V2
randstruct: Fix gcc-plugin performance mode to stay in group
mailbox: zynqmp: Annotate struct zynqmp_ipi_pdata with __counted_by
drivers: thermal: tsens: Annotate struct tsens_priv with __counted_by
irqchip/imx-intmux: Annotate struct intmux_data with __counted_by
KVM: Annotate struct kvm_irq_routing_table with __counted_by
virt: acrn: Annotate struct vm_memory_region_batch with __counted_by
hwmon: Annotate struct gsc_hwmon_platform_data with __counted_by
sparc: Annotate struct cpuinfo_tree with __counted_by
isdn: kcapi: replace deprecated strncpy with strscpy_pad
isdn: replace deprecated strncpy with strscpy
NFS/flexfiles: Annotate struct nfs4_ff_layout_segment with __counted_by
nfs41: Annotate struct nfs4_file_layout_dsaddr with __counted_by
...
|
||
|
Kent Overstreet
|
ee526b88ca |
closures: Fix race in closure_sync()
As pointed out by Linus, closure_sync() was racy; we could skip blocking immediately after a get() and a put(), but then that would skip any barrier corresponding to the other thread's put() barrier. To fix this, always do the full __closure_sync() sequence whenever any get() has happened and the closure might have been used by other threads. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
||
|
Kent Overstreet
|
2bce6368c4 |
closures: Better memory barriers
atomic_(dec|sub)_return_release() are a thing now - use them. Also, delete the useless barrier in set_closure_fn(): it's redundant with the memory barrier in closure_put(0. Since closure_put() would now otherwise just have a release barrier, we also need a new barrier when the ref hits 0 - smp_acquire__after_ctrl_dep(). Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
||
|
Linus Torvalds
|
63ce50fff9 |
Scheduler changes for v6.7 are:
- Fair scheduler (SCHED_OTHER) improvements:
- Remove the old and now unused SIS_PROP code & option
- Scan cluster before LLC in the wake-up path
- Use candidate prev/recent_used CPU if scanning failed for cluster wakeup
- NUMA scheduling improvements:
- Improve the VMA access-PID code to better skip/scan VMAs
- Extend tracing to cover VMA-skipping decisions
- Improve/fix the recently introduced sched_numa_find_nth_cpu() code
- Generalize numa_map_to_online_node()
- Energy scheduling improvements:
- Remove the EM_MAX_COMPLEXITY limit
- Add tracepoints to track energy computation
- Make the behavior of the 'sched_energy_aware' sysctl more consistent
- Consolidate and clean up access to a CPU's max compute capacity
- Fix uclamp code corner cases
- RT scheduling improvements:
- Drive dl_rq->overloaded with dl_rq->pushable_dl_tasks updates
- Drive the ->rto_mask with rt_rq->pushable_tasks updates
- Scheduler scalability improvements:
- Rate-limit updates to tg->load_avg
- On x86 disable IBRS when CPU is offline to improve single-threaded performance
- Micro-optimize in_task() and in_interrupt()
- Micro-optimize the PSI code
- Avoid updating PSI triggers and ->rtpoll_total when there are no state changes
- Core scheduler infrastructure improvements:
- Use saved_state to reduce some spurious freezer wakeups
- Bring in a handful of fast-headers improvements to scheduler headers
- Make the scheduler UAPI headers more widely usable by user-space
- Simplify the control flow of scheduler syscalls by using lock guards
- Fix sched_setaffinity() vs. CPU hotplug race
- Scheduler debuggability improvements:
- Disallow writing invalid values to sched_rt_period_us
- Fix a race in the rq-clock debugging code triggering warnings
- Fix a warning in the bandwidth distribution code
- Micro-optimize in_atomic_preempt_off() checks
- Enforce that the tasklist_lock is held in for_each_thread()
- Print the TGID in sched_show_task()
- Remove the /proc/sys/kernel/sched_child_runs_first sysctl
- Misc cleanups & fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Fair scheduler (SCHED_OTHER) improvements:
- Remove the old and now unused SIS_PROP code & option
- Scan cluster before LLC in the wake-up path
- Use candidate prev/recent_used CPU if scanning failed for cluster
wakeup
NUMA scheduling improvements:
- Improve the VMA access-PID code to better skip/scan VMAs
- Extend tracing to cover VMA-skipping decisions
- Improve/fix the recently introduced sched_numa_find_nth_cpu() code
- Generalize numa_map_to_online_node()
Energy scheduling improvements:
- Remove the EM_MAX_COMPLEXITY limit
- Add tracepoints to track energy computation
- Make the behavior of the 'sched_energy_aware' sysctl more
consistent
- Consolidate and clean up access to a CPU's max compute capacity
- Fix uclamp code corner cases
RT scheduling improvements:
- Drive dl_rq->overloaded with dl_rq->pushable_dl_tasks updates
- Drive the ->rto_mask with rt_rq->pushable_tasks updates
Scheduler scalability improvements:
- Rate-limit updates to tg->load_avg
- On x86 disable IBRS when CPU is offline to improve single-threaded
performance
- Micro-optimize in_task() and in_interrupt()
- Micro-optimize the PSI code
- Avoid updating PSI triggers and ->rtpoll_total when there are no
state changes
Core scheduler infrastructure improvements:
- Use saved_state to reduce some spurious freezer wakeups
- Bring in a handful of fast-headers improvements to scheduler
headers
- Make the scheduler UAPI headers more widely usable by user-space
- Simplify the control flow of scheduler syscalls by using lock
guards
- Fix sched_setaffinity() vs. CPU hotplug race
Scheduler debuggability improvements:
- Disallow writing invalid values to sched_rt_period_us
- Fix a race in the rq-clock debugging code triggering warnings
- Fix a warning in the bandwidth distribution code
- Micro-optimize in_atomic_preempt_off() checks
- Enforce that the tasklist_lock is held in for_each_thread()
- Print the TGID in sched_show_task()
- Remove the /proc/sys/kernel/sched_child_runs_first sysctl
... and misc cleanups & fixes"
* tag 'sched-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (82 commits)
sched/fair: Remove SIS_PROP
sched/fair: Use candidate prev/recent_used CPU if scanning failed for cluster wakeup
sched/fair: Scan cluster before scanning LLC in wake-up path
sched: Add cpus_share_resources API
sched/core: Fix RQCF_ACT_SKIP leak
sched/fair: Remove unused 'curr' argument from pick_next_entity()
sched/nohz: Update comments about NEWILB_KICK
sched/fair: Remove duplicate #include
sched/psi: Update poll => rtpoll in relevant comments
sched: Make PELT acronym definition searchable
sched: Fix stop_one_cpu_nowait() vs hotplug
sched/psi: Bail out early from irq time accounting
sched/topology: Rename 'DIE' domain to 'PKG'
sched/psi: Delete the 'update_total' function parameter from update_triggers()
sched/psi: Avoid updating PSI triggers and ->rtpoll_total when there are no state changes
sched/headers: Remove comment referring to rq::cpu_load, since this has been removed
sched/numa: Complete scanning of inactive VMAs when there is no alternative
sched/numa: Complete scanning of partial VMAs regardless of PID activity
sched/numa: Move up the access pid reset logic
sched/numa: Trace decisions related to skipping VMAs
...
|
||
|
Linus Torvalds
|
3cf3fabccb |
Locking changes in this cycle are:
- Futex improvements:
- Add the 'futex2' syscall ABI, which is an attempt to get away from the
multiplex syscall and adds a little room for extentions, while lifting
some limitations.
- Fix futex PI recursive rt_mutex waiter state bug
- Fix inter-process shared futexes on no-MMU systems
- Use folios instead of pages
- Micro-optimizations of locking primitives:
- Improve arch_spin_value_unlocked() on asm-generic ticket spinlock
architectures, to improve lockref code generation.
- Improve the x86-32 lockref_get_not_zero() main loop by adding
build-time CMPXCHG8B support detection for the relevant lockref code,
and by better interfacing the CMPXCHG8B assembly code with the compiler.
- Introduce arch_sync_try_cmpxchg() on x86 to improve sync_try_cmpxchg()
code generation. Convert some sync_cmpxchg() users to sync_try_cmpxchg().
- Micro-optimize rcuref_put_slowpath()
- Locking debuggability improvements:
- Improve CONFIG_DEBUG_RT_MUTEXES=y to have a fast-path as well
- Enforce atomicity of sched_submit_work(), which is de-facto atomic but
was un-enforced previously.
- Extend <linux/cleanup.h>'s no_free_ptr() with __must_check semantics
- Fix ww_mutex self-tests
- Clean up const-propagation in <linux/seqlock.h> and simplify
the API-instantiation macros a bit.
- RT locking improvements:
- Provide the rt_mutex_*_schedule() primitives/helpers and use them
in the rtmutex code to avoid recursion vs. rtlock on the PI state.
- Add nested blocking lockdep asserts to rt_mutex_lock(), rtlock_lock()
and rwbase_read_lock().
- Plus misc fixes & cleanups
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Info Molnar:
"Futex improvements:
- Add the 'futex2' syscall ABI, which is an attempt to get away from
the multiplex syscall and adds a little room for extentions, while
lifting some limitations.
- Fix futex PI recursive rt_mutex waiter state bug
- Fix inter-process shared futexes on no-MMU systems
- Use folios instead of pages
Micro-optimizations of locking primitives:
- Improve arch_spin_value_unlocked() on asm-generic ticket spinlock
architectures, to improve lockref code generation
- Improve the x86-32 lockref_get_not_zero() main loop by adding
build-time CMPXCHG8B support detection for the relevant lockref
code, and by better interfacing the CMPXCHG8B assembly code with
the compiler
- Introduce arch_sync_try_cmpxchg() on x86 to improve
sync_try_cmpxchg() code generation. Convert some sync_cmpxchg()
users to sync_try_cmpxchg().
- Micro-optimize rcuref_put_slowpath()
Locking debuggability improvements:
- Improve CONFIG_DEBUG_RT_MUTEXES=y to have a fast-path as well
- Enforce atomicity of sched_submit_work(), which is de-facto atomic
but was un-enforced previously.
- Extend <linux/cleanup.h>'s no_free_ptr() with __must_check
semantics
- Fix ww_mutex self-tests
- Clean up const-propagation in <linux/seqlock.h> and simplify the
API-instantiation macros a bit
RT locking improvements:
- Provide the rt_mutex_*_schedule() primitives/helpers and use them
in the rtmutex code to avoid recursion vs. rtlock on the PI state.
- Add nested blocking lockdep asserts to rt_mutex_lock(),
rtlock_lock() and rwbase_read_lock()
.. plus misc fixes & cleanups"
* tag 'locking-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits)
futex: Don't include process MM in futex key on no-MMU
locking/seqlock: Fix grammar in comment
alpha: Fix up new futex syscall numbers
locking/seqlock: Propagate 'const' pointers within read-only methods, remove forced type casts
locking/lockdep: Fix string sizing bug that triggers a format-truncation compiler-warning
locking/seqlock: Change __seqprop() to return the function pointer
locking/seqlock: Simplify SEQCOUNT_LOCKNAME()
locking/atomics: Use atomic_try_cmpxchg_release() to micro-optimize rcuref_put_slowpath()
locking/atomic, xen: Use sync_try_cmpxchg() instead of sync_cmpxchg()
locking/atomic/x86: Introduce arch_sync_try_cmpxchg()
locking/atomic: Add generic support for sync_try_cmpxchg() and its fallback
locking/seqlock: Fix typo in comment
futex/requeue: Remove unnecessary ‘NULL’ initialization from futex_proxy_trylock_atomic()
locking/local, arch: Rewrite local_add_unless() as a static inline function
locking/debug: Fix debugfs API return value checks to use IS_ERR()
locking/ww_mutex/test: Make sure we bail out instead of livelock
locking/ww_mutex/test: Fix potential workqueue corruption
locking/ww_mutex/test: Use prng instead of rng to avoid hangs at bootup
futex: Add sys_futex_requeue()
futex: Add flags2 argument to futex_requeue()
...
|
||
|
Linus Torvalds
|
9e87705289 |
Initial bcachefs pull request for 6.7-rc1
Here's the bcachefs filesystem pull request. One new patch since last week: the exportfs constants ended up conflicting with other filesystems that are also getting added to the global enum, so switched to new constants picked by Amir. I'll also be sending another pull request later on in the cycle bringing things up to date my master branch that people are currently running; that will be restricted to fs/bcachefs/, naturally. Testing - fstests as well as the bcachefs specific tests in ktest: https://evilpiepirate.org/~testdashboard/ci?branch=bcachefs-for-upstream It's also been soaking in linux-next, which resulted in a whole bunch of smatch complaints and fixes and a patch or two from Kees. The only new non fs/bcachefs/ patch is the objtool patch that adds bcachefs functions to the list of noreturns. The patch that exports osq_lock() has been dropped for now, per Ingo. Prereq patch list: |
||
|
Linus Torvalds
|
8b16da681e |
NFSD 6.7 Release Notes
This release completes the SunRPC thread scheduler work that was begun in v6.6. The scheduler can now find an svc thread to wake in constant time and without a list walk. Thanks again to Neil Brown for this overhaul. Lorenzo Bianconi contributed infrastructure for a netlink-based NFSD control plane. The long-term plan is to provide the same functionality as found in /proc/fs/nfsd, plus some interesting additions, and then migrate the NFSD user space utilities to netlink. A long series to overhaul NFSD's NFSv4 operation encoding was applied in this release. The goals are to bring this family of encoding functions in line with the matching NFSv4 decoding functions and with the NFSv2 and NFSv3 XDR functions, preparing the way for better memory safety and maintainability. A further improvement to NFSD's write delegation support was contributed by Dai Ngo. This adds a CB_GETATTR callback, enabling the server to retrieve cached size and mtime data from clients holding write delegations. If the server can retrieve this information, it does not have to recall the delegation in some cases. The usual panoply of bug fixes and minor improvements round out this release. As always I am grateful to all contributors, reviewers, and testers. -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEKLLlsBKG3yQ88j7+M2qzM29mf5cFAmU5IuoACgkQM2qzM29m f5eVsg//bVp8S93ci/oDlKfzOwH2fO5e5rna91wrDpJxkd51h6KTx55dSRG5sjAZ EywIVOann6xCtsixAPyff5Cweg2dWvzQRsy1ZnvWQ1qZBzD5KAJY5LPkeSFUCKBo Zani/qTOYbxzgFMjZx+yDSXDPKG68WYZBQK59SI7mURu4SYdk8aRyNY8mjHfr0Vh Aqrcny4oVtXV4sL5P5G/2FUW7WKT3olA3jSYlRRNMhbs2qpEemRCCrspOEMMad+b t1+ZCg+U27PMranvOJnof4RU7peZbaxDWA0gyiUbivVXVtZn9uOs0ffhktkvechL ePc33dqdp2ITdKIPA6JlaRv5WflKXQw0YYM9Kv5mcR4A2el7owL4f/pMlPhtbYwJ IOJv15KdKVN979G2e6WMYiKK+iHfaUUguhMEXnfnGoAajHOZNQiUEo3iFQAD7LDc DvMF8d9QqYmB9IW8FOYaRRfZGJOQHf3TL79Nd08z/bn5swvlvfj77leux9Sb+0/m Luk2Xvz2AJVSXE31wzabaGHkizN+BtH+e4MMbXUHBPW5jE9v7XOnEUFr4UdZyr9P Gl87A7NcrzNjJWT5TrnzM4sOslNsx46Aeg+VuNt2fSRn2dm6iBu2B8s0N4imx6dV PX1y9VSLq5WRhjrFZ1qeiZdsuTaQtrEiNDoRIQR6nCJPAV80iFk= =B4wJ -----END PGP SIGNATURE----- Merge tag 'nfsd-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux Pull nfsd updates from Chuck Lever: "This release completes the SunRPC thread scheduler work that was begun in v6.6. The scheduler can now find an svc thread to wake in constant time and without a list walk. Thanks again to Neil Brown for this overhaul. Lorenzo Bianconi contributed infrastructure for a netlink-based NFSD control plane. The long-term plan is to provide the same functionality as found in /proc/fs/nfsd, plus some interesting additions, and then migrate the NFSD user space utilities to netlink. A long series to overhaul NFSD's NFSv4 operation encoding was applied in this release. The goals are to bring this family of encoding functions in line with the matching NFSv4 decoding functions and with the NFSv2 and NFSv3 XDR functions, preparing the way for better memory safety and maintainability. A further improvement to NFSD's write delegation support was contributed by Dai Ngo. This adds a CB_GETATTR callback, enabling the server to retrieve cached size and mtime data from clients holding write delegations. If the server can retrieve this information, it does not have to recall the delegation in some cases. The usual panoply of bug fixes and minor improvements round out this release. As always I am grateful to all contributors, reviewers, and testers" * tag 'nfsd-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (127 commits) svcrdma: Fix tracepoint printk format svcrdma: Drop connection after an RDMA Read error NFSD: clean up alloc_init_deleg() NFSD: Fix frame size warning in svc_export_parse() NFSD: Rewrite synopsis of nfsd_percpu_counters_init() nfsd: Clean up errors in nfs3proc.c nfsd: Clean up errors in nfs4state.c NFSD: Clean up errors in stats.c NFSD: simplify error paths in nfsd_svc() NFSD: Clean up nfsd4_encode_seek() NFSD: Clean up nfsd4_encode_offset_status() NFSD: Clean up nfsd4_encode_copy_notify() NFSD: Clean up nfsd4_encode_copy() NFSD: Clean up nfsd4_encode_test_stateid() NFSD: Clean up nfsd4_encode_exchange_id() NFSD: Clean up nfsd4_do_encode_secinfo() NFSD: Clean up nfsd4_encode_access() NFSD: Clean up nfsd4_encode_readdir() NFSD: Clean up nfsd4_encode_entry4() NFSD: Add an nfsd4_encode_nfs_cookie4() helper ... |
||
|
Linus Torvalds
|
df9c65b5fc |
vfs-6.7.iov_iter
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Merge tag 'vfs-6.7.iov_iter' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
Pull iov_iter updates from Christian Brauner:
"This contain's David's iov_iter cleanup work to convert the iov_iter
iteration macros to inline functions:
- Remove last_offset from iov_iter as it was only used by ITER_PIPE
- Add a __user tag on copy_mc_to_user()'s dst argument on x86 to
match that on powerpc and get rid of a sparse warning
- Convert iter->user_backed to user_backed_iter() in the sound PCM
driver
- Convert iter->user_backed to user_backed_iter() in a couple of
infiniband drivers
- Renumber the type enum so that the ITER_* constants match the order
in iterate_and_advance*()
- Since the preceding patch puts UBUF and IOVEC at 0 and 1, change
user_backed_iter() to just use the type value and get rid of the
extra flag
- Convert the iov_iter iteration macros to always-inline functions to
make the code easier to follow. It uses function pointers, but they
get optimised away
- Move the check for ->copy_mc to _copy_from_iter() and
copy_page_from_iter_atomic() rather than in memcpy_from_iter_mc()
where it gets repeated for every segment. Instead, we check once
and invoke a side function that can use iterate_bvec() rather than
iterate_and_advance() and supply a different step function
- Move the copy-and-csum code to net/ where it can be in proximity
with the code that uses it
- Fold memcpy_and_csum() in to its two users
- Move csum_and_copy_from_iter_full() out of line and merge in
csum_and_copy_from_iter() since the former is the only caller of
the latter
- Move hash_and_copy_to_iter() to net/ where it can be with its only
caller"
* tag 'vfs-6.7.iov_iter' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs:
iov_iter, net: Move hash_and_copy_to_iter() to net/
iov_iter, net: Merge csum_and_copy_from_iter{,_full}() together
iov_iter, net: Fold in csum_and_memcpy()
iov_iter, net: Move csum_and_copy_to/from_iter() to net/
iov_iter: Don't deal with iter->copy_mc in memcpy_from_iter_mc()
iov_iter: Convert iterate*() to inline funcs
iov_iter: Derive user-backedness from the iterator type
iov_iter: Renumber ITER_* constants
infiniband: Use user_backed_iter() to see if iterator is UBUF/IOVEC
sound: Fix snd_pcm_readv()/writev() to use iov access functions
iov_iter, x86: Be consistent about the __user tag on copy_mc_to_user()
iov_iter: Remove last_offset from iov_iter as it was for ITER_PIPE
|
||
|
Kees Cook
|
dcc4e5728e |
seq_buf: Introduce DECLARE_SEQ_BUF and seq_buf_str()
Solve two ergonomic issues with struct seq_buf; 1) Too much boilerplate is required to initialize: struct seq_buf s; char buf[32]; seq_buf_init(s, buf, sizeof(buf)); Instead, we can build this directly on the stack. Provide DECLARE_SEQ_BUF() macro to do this: DECLARE_SEQ_BUF(s, 32); 2) %NUL termination is fragile and requires 2 steps to get a valid C String (and is a layering violation exposing the "internals" of seq_buf): seq_buf_terminate(s); do_something(s->buffer); Instead, we can just return s->buffer directly after terminating it in the refactored seq_buf_terminate(), now known as seq_buf_str(): do_something(seq_buf_str(s)); Link: https://lore.kernel.org/linux-trace-kernel/20231027155634.make.260-kees@kernel.org Link: https://lore.kernel.org/linux-trace-kernel/20231026194033.it.702-kees@kernel.org/ Cc: Yosry Ahmed <yosryahmed@google.com> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Justin Stitt <justinstitt@google.com> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Petr Mladek <pmladek@suse.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Yun Zhou <yun.zhou@windriver.com> Cc: Jacob Keller <jacob.e.keller@intel.com> Cc: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Dave Jiang
|
a103f46633 |
acpi: Move common tables helper functions to common lib
Some of the routines in ACPI driver/acpi/tables.c can be shared with parsing CDAT. CDAT is a device-provided data structure that is formatted similar to a platform provided ACPI table. CDAT is used by CXL and can exist on platforms that do not use ACPI. Split out the common routine from ACPI to accommodate platforms that do not support ACPI and move that to /lib. The common routines can be built outside of ACPI if FIRMWARE_TABLES is selected. Link: https://lore.kernel.org/linux-cxl/CAJZ5v0jipbtTNnsA0-o5ozOk8ZgWnOg34m34a9pPenTyRLj=6A@mail.gmail.com/ Suggested-by: "Rafael J. Wysocki" <rafael@kernel.org> Reviewed-by: Hanjun Guo <guohanjun@huawei.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Acked-by: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com> Link: https://lore.kernel.org/r/169713683430.2205276.17899451119920103445.stgit@djiang5-mobl3 Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
||
|
Jakub Kicinski
|
ec4c20ca09 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: net/mac80211/rx.c |
||
|
wuqiang.matt
|
4758560fa2 |
kprobes: unused header files removed
As kernel test robot reported, lib/test_objpool.c (trace:probes/for-next) has linux/version.h included, but version.h is not used at all. Then more unused headers are found in test_objpool.c and rethook.c, and all of them should be removed. Link: https://lore.kernel.org/all/20231023112245.6112-1-wuqiang.matt@bytedance.com/ Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202310191512.vvypKU5Z-lkp@intel.com/ Signed-off-by: wuqiang.matt <wuqiang.matt@bytedance.com> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> |
||
|
Matthew Wilcox (Oracle)
|
d0ed46b603 |
tracing: Move readpos from seq_buf to trace_seq
To make seq_buf more lightweight as a string buf, move the readpos member from seq_buf to its container, trace_seq. That puts the responsibility of maintaining the readpos entirely in the tracing code. If some future users want to package up the readpos with a seq_buf, we can define a new struct then. Link: https://lore.kernel.org/linux-trace-kernel/20231020033545.2587554-2-willy@infradead.org Cc: Kees Cook <keescook@chromium.org> Cc: Justin Stitt <justinstitt@google.com> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Petr Mladek <pmladek@suse.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Jakub Kicinski
|
374d345d9b |
netlink: add variable-length / auto integers
We currently push everyone to use padding to align 64b values in netlink. Un-padded nla_put_u64() doesn't even exist any more. The story behind this possibly start with this thread: https://lore.kernel.org/netdev/20121204.130914.1457976839967676240.davem@davemloft.net/ where DaveM was concerned about the alignment of a structure containing 64b stats. If user space tries to access such struct directly: struct some_stats *stats = nla_data(attr); printf("A: %llu", stats->a); lack of alignment may become problematic for some architectures. These days we most often put every single member in a separate attribute, meaning that the code above would use a helper like nla_get_u64(), which can deal with alignment internally. Even for arches which don't have good unaligned access - access aligned to 4B should be pretty efficient. Kernel and well known libraries deal with unaligned input already. Padded 64b is quite space-inefficient (64b + pad means at worst 16B per attr vs 32b which takes 8B). It is also more typing: if (nla_put_u64_pad(rsp, NETDEV_A_SOMETHING_SOMETHING, value, NETDEV_A_SOMETHING_PAD)) Create a new attribute type which will use 32 bits at netlink level if value is small enough (probably most of the time?), and (4B-aligned) 64 bits otherwise. Kernel API is just: if (nla_put_uint(rsp, NETDEV_A_SOMETHING_SOMETHING, value)) Calling this new type "just" sint / uint with no specific size will hopefully also make people more comfortable with using it. Currently telling people "don't use u8, you may need the bits, and netlink will round up to 4B, anyway" is the #1 comment we give to newcomers. In terms of netlink layout it looks like this: 0 4 8 12 16 32b: [nlattr][ u32 ] 64b: [ pad ][nlattr][ u64 ] uint(32) [nlattr][ u32 ] uint(64) [nlattr][ u64 ] Signed-off-by: Jakub Kicinski <kuba@kernel.org> Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Kent Overstreet
|
73badee428 |
lib/generic-radix-tree.c: Add peek_prev()
This patch adds genradix_peek_prev(), genradix_iter_rewind(), and genradix_for_each_reverse(), for iterating backwards over a generic radix tree. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
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Kent Overstreet
|
9492261ff2 |
lib/generic-radix-tree.c: Don't overflow in peek()
When we started spreading new inode numbers throughout most of the 64 bit inode space, that triggered some corner case bugs, in particular some integer overflows related to the radix tree code. Oops. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> |
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Kent Overstreet
|
b414e8ecd4 |
closures: Add a missing include
Fixes building in userspace. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
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Kent Overstreet
|
8c8d2d9670 |
bcache: move closures to lib/
Prep work for bcachefs - being a fork of bcache it also uses closures Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Acked-by: Coly Li <colyli@suse.de> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> |
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Alexey Dobriyan
|
68279f9c9f |
treewide: mark stuff as __ro_after_init
__read_mostly predates __ro_after_init. Many variables which are marked __read_mostly should have been __ro_after_init from day 1. Also, mark some stuff as "const" and "__init" while I'm at it. [akpm@linux-foundation.org: revert sysctl_nr_open_min, sysctl_nr_open_max changes due to arm warning] [akpm@linux-foundation.org: coding-style cleanups] Link: https://lkml.kernel.org/r/4f6bb9c0-abba-4ee4-a7aa-89265e886817@p183 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Hugh Dickins
|
1431996bf9 |
percpu_counter: extend _limited_add() to negative amounts
Though tmpfs does not need it, percpu_counter_limited_add() can be twice as useful if it works sensibly with negative amounts (subs) - typically decrements towards a limit of 0 or nearby: as suggested by Dave Chinner. And in the course of that reworking, skip the percpu counter sum if it is already obvious that the limit would be passed: as suggested by Tim Chen. Extend the comment above __percpu_counter_limited_add(), defining the behaviour with positive and negative amounts, allowing negative limits, but not bothering about overflow beyond S64_MAX. Link: https://lkml.kernel.org/r/8f86083b-c452-95d4-365b-f16a2e4ebcd4@google.com Signed-off-by: Hugh Dickins <hughd@google.com> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Carlos Maiolino <cem@kernel.org> Cc: Christian Brauner <brauner@kernel.org> Cc: Chuck Lever <chuck.lever@oracle.com> Cc: Darrick J. Wong <djwong@kernel.org> Cc: Dave Chinner <dchinner@redhat.com> Cc: Jan Kara <jack@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Tim Chen <tim.c.chen@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Hugh Dickins
|
beb9868628 |
shmem,percpu_counter: add _limited_add(fbc, limit, amount)
Percpu counter's compare and add are separate functions: without locking around them (which would defeat their purpose), it has been possible to overflow the intended limit. Imagine all the other CPUs fallocating tmpfs huge pages to the limit, in between this CPU's compare and its add. I have not seen reports of that happening; but tmpfs's recent addition of dquot_alloc_block_nodirty() in between the compare and the add makes it even more likely, and I'd be uncomfortable to leave it unfixed. Introduce percpu_counter_limited_add(fbc, limit, amount) to prevent it. I believe this implementation is correct, and slightly more efficient than the combination of compare and add (taking the lock once rather than twice when nearing full - the last 128MiB of a tmpfs volume on a machine with 128 CPUs and 4KiB pages); but it does beg for a better design - when nearing full, there is no new batching, but the costly percpu counter sum across CPUs still has to be done, while locked. Follow __percpu_counter_sum()'s example, including cpu_dying_mask as well as cpu_online_mask: but shouldn't __percpu_counter_compare() and __percpu_counter_limited_add() then be adding a num_dying_cpus() to num_online_cpus(), when they calculate the maximum which could be held across CPUs? But the times when it matters would be vanishingly rare. Link: https://lkml.kernel.org/r/bb817848-2d19-bcc8-39ca-ea179af0f0b4@google.com Signed-off-by: Hugh Dickins <hughd@google.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Tim Chen <tim.c.chen@intel.com> Cc: Dave Chinner <dchinner@redhat.com> Cc: Darrick J. Wong <djwong@kernel.org> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Carlos Maiolino <cem@kernel.org> Cc: Christian Brauner <brauner@kernel.org> Cc: Chuck Lever <chuck.lever@oracle.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
|
099d7439ce |
maple_tree: add GFP_KERNEL to allocations in mas_expected_entries()
Users complained about OOM errors during fork without triggering
compaction. This can be fixed by modifying the flags used in
mas_expected_entries() so that the compaction will be triggered in low
memory situations. Since mas_expected_entries() is only used during fork,
the extra argument does not need to be passed through.
Additionally, the two test_maple_tree test cases and one benchmark test
were altered to use the correct locking type so that allocations would not
trigger sleeping and thus fail. Testing was completed with lockdep atomic
sleep detection.
The additional locking change requires rwsem support additions to the
tools/ directory through the use of pthreads pthread_rwlock_t. With this
change test_maple_tree works in userspace, as a module, and in-kernel.
Users may notice that the system gave up early on attempting to start new
processes instead of attempting to reclaim memory.
Link: https://lkml.kernel.org/r/20230915093243epcms1p46fa00bbac1ab7b7dca94acb66c44c456@epcms1p4
Link: https://lkml.kernel.org/r/20231012155233.2272446-1-Liam.Howlett@oracle.com
Fixes:
|
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Arnd Bergmann
|
57e06f8c1f |
Qualcomm driver updates for v6.7
This introduces partial support for the Qualcomm Secure Execution Environment SCM interface, and uses this to implement EFI variable access on the Windows On Snapdragon devices (for now). The 32/64-bit calling convention detector of the SCM interface is updated to not choose 64-bit convention when Linux is 32-bit. The "extern" specifier is dropped from the interface include file. The LLCC driver gains support for carrying configuration for multiple different system/DDR configurations for a given platform, and selecting between them. Support for Q[DR]U1000 is added to the driver. All exported symbols are transitioned to EXPORT_SYMBOL_GPL(). The platform_drivers in the Qualcomm SoC are transitioned to the void-returning remove_new implementation. The rmtfs memory driver gains support for leaving guard pages around the used area, to avoid issues if the allocation happens to be placed adjacent to another protected memory region. The socinfo driver gains knowledge about IPQ8174, QCM6490, SM7150P and various PMICs used together with SM8550. -----BEGIN PGP SIGNATURE----- iQJJBAABCAAzFiEEBd4DzF816k8JZtUlCx85Pw2ZrcUFAmUsTdwVHGFuZGVyc3Nv bkBrZXJuZWwub3JnAAoJEAsfOT8Nma3FffsQAMcY5NKBZqbQu5wNr2zPnKW5m/30 lYi4bW42mlY6Mo3h97LLxjGM9bqsmPasfAxv/84viN0JYxrSVye/zNtD35qTQBtu t8O8vdOaOYXIc8dwqC16Fl0kI5pm9tl7p5SJmGAUZBvIGUIGngy3gZOYM+HzyMQr UXFO6dO0tQvjowd1t0xE51UNm4J79Vm8HjtuR1pc4i+fZhsy5XhZYq9e4531Yc7o lNacBugjXhurw/rz0odNuRzKn+He+7KQR/hSNv8B2MbH0ZUP+k4VUaRSD9TZyBgC cOahbCfVLkGwepPFGuaaJUUgo8/aa4HiAbdyOrNL2ozYkoLv/PbRrLF0R9KgXK5v LPXpqXt97+rWPnq2iPrfZlo4LAj6JVSCUCxIRZFcWyDFv+wHsYuRbO64s1+MC7+M CPpvup31PLGCeR9Joo/WTt9iAUPJ4BY9v4mkjIdmJF371WRryP4um5Ln6xMC+fIe U/Ss8mPNpSM+guDo8LbdCGAcxWTDk8TOXxa/888y/4Q5Mg97nn0hY2KK4JBmJ7I3 Thd0n9vXjM3oOwPGLC7Y2zj9ZQI5k7JKn331yPS4Hb20SKGEztlaJp4B1DdA5/ul 4BUoh3HWV7dB4l+felrAmPAzAUXvyfGrDBJhXe2dabRJjMhouQ6Wudn3OlC4VP/l fjszjVvPFt7CE30C =B1Kn -----END PGP SIGNATURE----- gpgsig -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmUv9yoACgkQYKtH/8kJ UifTOQ/+NUj5Y/sAZfMLY3Q3e8s2nsKZLHHUCH7O/DOR6ILc5DZcTI5a23kfIA9V VVluTEnRUzbSHCb3WPW3Yfgy5HpZoaLgXWXGgCsRVKRIODN745TOm2Hn/dFZF0Z7 Fso0oPplGKrvuxSlaxg+1fbJ7c5r8kE/TDu+ok0eiZGvzwfnVas4bB+27thdH/le tY/wS9BhHmBrs6k7gqCfEFWF7M6kS29FOPILIlAfxgUevgSIvAUMBH/KUAGw1Qo/ UNd372TwXkdw0pG2KOx8xR4iKFBfWX4PbHBtBbUZzAnqerDnNrh7p0qTlhfKXOpb jQWx3eqQIwFbbWZ39DxiLE8/h5ig3jF29u1s/vAG2Zb5o5cYwiRM7OjWW8Q8Ha1E ha2NSWMEaNniegnMeoy1VTN8uSYY+dUseKmLmP5vCobmYVKuX96iQx5pNBYhsrwN YOlkOkF1fXINFqSD5v2N4s4AdGx634GgP7azkjm6fGS+hlwKgWNzwH4HHgXNx/u/ IPRPw7U/hji2R++oNPtEOlNHoHWM6Zx0ema38qGTC69uAFHETxbFUmOBaX6q/7Ot AwpP25YozehwDoUVZRwR6CpHcVbKDl4oJhWaruflkxC+6YFTGYS2hPFiF6zbnQw9 u36QDkgNzhBG2LINlmqCAAoGWmC+mqwsqYN/DyKsUUSVEODyUng= =7XXT -----END PGP SIGNATURE----- Merge tag 'qcom-drivers-for-6.7' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into soc/drivers Qualcomm driver updates for v6.7 This introduces partial support for the Qualcomm Secure Execution Environment SCM interface, and uses this to implement EFI variable access on the Windows On Snapdragon devices (for now). The 32/64-bit calling convention detector of the SCM interface is updated to not choose 64-bit convention when Linux is 32-bit. The "extern" specifier is dropped from the interface include file. The LLCC driver gains support for carrying configuration for multiple different system/DDR configurations for a given platform, and selecting between them. Support for Q[DR]U1000 is added to the driver. All exported symbols are transitioned to EXPORT_SYMBOL_GPL(). The platform_drivers in the Qualcomm SoC are transitioned to the void-returning remove_new implementation. The rmtfs memory driver gains support for leaving guard pages around the used area, to avoid issues if the allocation happens to be placed adjacent to another protected memory region. The socinfo driver gains knowledge about IPQ8174, QCM6490, SM7150P and various PMICs used together with SM8550. * tag 'qcom-drivers-for-6.7' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux: (44 commits) soc: qcom: socinfo: Convert to platform remove callback returning void soc: qcom: smsm: Convert to platform remove callback returning void soc: qcom: smp2p: Convert to platform remove callback returning void soc: qcom: smem: Convert to platform remove callback returning void soc: qcom: rmtfs_mem: Convert to platform remove callback returning void soc: qcom: qcom_stats: Convert to platform remove callback returning void soc: qcom: qcom_gsbi: Convert to platform remove callback returning void soc: qcom: qcom_aoss: Convert to platform remove callback returning void soc: qcom: pmic_glink: Convert to platform remove callback returning void soc: qcom: ocmem: Convert to platform remove callback returning void soc: qcom: llcc-qcom: Convert to platform remove callback returning void soc: qcom: icc-bwmon: Convert to platform remove callback returning void firmware: qcom_scm: use 64-bit calling convention only when client is 64-bit soc: qcom: llcc: Handle a second device without data corruption soc: qcom: Switch to EXPORT_SYMBOL_GPL() soc: qcom: smem: Annotate struct qcom_smem with __counted_by soc: qcom: rmtfs: Support discarding guard pages dt-bindings: reserved-memory: rmtfs: Allow guard pages dt-bindings: firmware: qcom,scm: document IPQ5018 compatible firmware: qcom_scm: disable SDI if required ... Link: https://lore.kernel.org/r/20231015204014.855672-1-andersson@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
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wuqiang.matt
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92f90d3b0d |
lib: objpool test module added
The test_objpool module (test_objpool) will run several testcases for objpool stress and performance evaluation. Each testcase will have all available cpu cores involved to create a situation of high parallel and high contention. As of now there are 5 groups and 5 * 2 testcases in total: 1) group 1: synchronous mode objpool is managed synchronously, that is, all objects are to be reclaimed before objpool finalization and the objpool owner makes sure of it. All threads on different cores run in the same pace 2) group 2: synchronous mode + hrtimer this case have 2 customers: normal threads and hrtimer softirqs 3) group 3: synchronous + overrun mode This test group is mainly for performance evaluation of missing cases when pre-allocated objects are less than the requested 4) group 4: asynchronous mode This case is just an emulation of kretprobe, with refcount used to control the objpool lifecycle 5) group 5: asynchronous mode with hrtimer hrtimer softirq is introduced to stress async objpool operations Link: https://lore.kernel.org/all/20231017135654.82270-3-wuqiang.matt@bytedance.com/ Signed-off-by: wuqiang.matt <wuqiang.matt@bytedance.com> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> |
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wuqiang.matt
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b4edb8d2d4 |
lib: objpool added: ring-array based lockless MPMC
objpool is a scalable implementation of high performance queue for object allocation and reclamation, such as kretprobe instances. With leveraging percpu ring-array to mitigate hot spots of memory contention, it delivers near-linear scalability for high parallel scenarios. The objpool is best suited for the following cases: 1) Memory allocation or reclamation are prohibited or too expensive 2) Consumers are of different priorities, such as irqs and threads Limitations: 1) Maximum objects (capacity) is fixed after objpool creation 2) All pre-allocated objects are managed in percpu ring array, which consumes more memory than linked lists Link: https://lore.kernel.org/all/20231017135654.82270-2-wuqiang.matt@bytedance.com/ Signed-off-by: wuqiang.matt <wuqiang.matt@bytedance.com> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> |
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|
Yury Norov
|
6cb42f91aa |
bitmap: move bitmap_*_region() functions to bitmap.h
Now that bitmap_*_region() functions are implemented as thin wrappers around others, it's worth to move them to the header, as it opens room for compile-time optimizations. CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com> CC: Rasmus Villemoes <linux@rasmusvillemoes.dk> CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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NeilBrown
|
de9e82c355 |
lib: add light-weight queuing mechanism.
lwq is a FIFO single-linked queue that only requires a spinlock for dequeueing, which happens in process context. Enqueueing is atomic with no spinlock and can happen in any context. This is particularly useful when work items are queued from BH or IRQ context, and when they are handled one at a time by dedicated threads. Avoiding any locking when enqueueing means there is no need to disable BH or interrupts, which is generally best avoided (particularly when there are any RT tasks on the machine). This solution is superior to using "list_head" links because we need half as many pointers in the data structures, and because list_head lists would need locking to add items to the queue. This solution is superior to a bespoke solution as all locking and container_of casting is integrated, so the interface is simple. Despite the similar name, this solution meets a distinctly different need to kfifo. kfifo provides a fixed sized circular buffer to which data can be added at one end and removed at the other, and does not provide any locking. lwq does not have any size limit and works with data structures (objects?) rather than data (bytes). A unit test for basic functionality, which runs at boot time, is included. Signed-off-by: NeilBrown <neilb@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com> Cc: Kees Cook <keescook@chromium.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: David Gow <davidgow@google.com> Cc: linux-kernel@vger.kernel.org Message-Id: <20230911111333.4d1a872330e924a00acb905b@linux-foundation.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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NeilBrown
|
8a3e5975ed |
llist: add llist_del_first_this()
llist_del_first_this() deletes a specific entry from an llist, providing it is at the head of the list. Multiple threads can call this concurrently providing they each offer a different entry. This can be uses for a set of worker threads which are on the llist when they are idle. The head can always be woken, and when it is woken it can remove itself, and possibly wake the next if there is an excess of work to do. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
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Yury Norov
|
1d4836527d |
bitmap: drop _reg_op() function
Now that all _reg_op() users are switched to alternative functions, _reg_op() machinery is not needed anymore. CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com> CC: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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Yury Norov
|
9276819a68 |
bitmap: replace _reg_op(REG_OP_ISFREE) with find_next_bit()
_reg_op(REG_OP_ISFREE) can be trivially replaced with find_next_bit(). Doing that opens room for potential small_const_nbits() optimization. CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com> CC: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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Yury Norov
|
add00c76ee |
bitmap: replace _reg_op(REG_OP_RELEASE) with bitmap_clear()
_reg_op(REG_OP_RELEASE) duplicates bitmap_clear(). CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com> CC: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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Yury Norov
|
eae5acbd75 |
bitmap: replace _reg_op(REG_OP_ALLOC) with bitmap_set()
_reg_op(REG_OP_ALLOC) duplicates bitmap_set(). CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com> CC: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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Yury Norov
|
b085f969ed |
bitmap: fix opencoded bitmap_allocate_region()
bitmap_find_region() opencodes bitmap_allocate_region(). CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com> CC: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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Yury Norov
|
6d5d3a0c33 |
bitmap: add test for bitmap_*_region() functions
Test basic functionality of bitmap_{allocate,release,find_free}_region()
functions.
CC: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Yury Norov <yury.norov@gmail.com>
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Yury Norov
|
82bf9bdfbc |
bitmap: align __reg_op() wrappers with modern coding style
Fix comments so that scripts/kernel-doc doesn't warn, and fix for-loop stype in bitmap_find_free_region(). CC: Rasmus Villemoes <linux@rasmusvillemoes.dk> Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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Yury Norov
|
aae06fc1b5 |
lib/bitmap: split-out string-related operations to a separate files
lib/bitmap.c and corresponding include/linux/bitmap.h are intended to hold functions related to operations on bitmaps, like bitmap_shift or bitmap_set. Historically, some string-related operations like bitmap_parse are also reside in lib/bitmap.c. Now that the subsystem evolves, string-related bitmap operations became a significant part of the file. Because they are quite different from the other bitmap functions by nature, it's worth to split them to a separate source/header files. CC: Andrew Morton <akpm@linux-foundation.org> CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com> CC: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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Andy Shevchenko
|
7733aa8938 |
bitmap: Remove dead code, i.e. bitmap_copy_le()
Besides the fact it's not used anywhere it should be implemented differently, i.e. via helpers from linux/byteorder/generic.h. Yet the helpers themselves need to be introduced first. Also note, the function lacks of the test cases, they must be provided. Hence, drop the current dead code for good. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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Jonathan Neuschäfer
|
8ed13a762c |
bitmap: Fix a typo ("identify map")
A map in which each element is mapped to itself is called an "identity map". Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
||
|
Randy Dunlap
|
57f728d59f |
cpumask: kernel-doc cleanups and additions
Clean up some punctutation and abbreviations. Add kernel-doc notation for one function and function return value for 39 functions. cpumask.h: Fix some punctuation (plural vs. possessive). Fix some abbreviations (ie. -> i.e., id -> ID). Fix 35 warnings like this: include/linux/cpumask.h:161: warning: No description found for return value of 'cpumask_first' cpumask.c: Add Return: value for 4 functions. Add kernel-doc for cpumask_any_distribute(). Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
||
|
Uros Bizjak
|
4fbf8b136d |
locking/atomics: Use atomic_try_cmpxchg_release() to micro-optimize rcuref_put_slowpath()
Use atomic_try_cmpxchg() instead of atomic_cmpxchg(*ptr, old, new) == old in rcuref_put_slowpath(). On x86 the CMPXCHG instruction returns success in the ZF flag, so this change saves a compare after CMPXCHG. Additionaly, the compiler reorders some code blocks to follow likely/unlikely annotations in the atomic_try_cmpxchg() macro, improving the code from: 9a: f0 0f b1 0b lock cmpxchg %ecx,(%rbx) 9e: 83 f8 ff cmp $0xffffffff,%eax a1: 74 04 je a7 <rcuref_put_slowpath+0x27> a3: 31 c0 xor %eax,%eax to: 9a: f0 0f b1 0b lock cmpxchg %ecx,(%rbx) 9e: 75 4c jne ec <rcuref_put_slowpath+0x6c> a0: b0 01 mov $0x1,%al No functional change intended. Signed-off-by: Uros Bizjak <ubizjak@gmail.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul E. McKenney <paulmck@kernel.org> Link: https://lore.kernel.org/r/20230509150255.3691-1-ubizjak@gmail.com |
||
|
David Howells
|
b5f0e20f44
|
iov_iter, net: Move hash_and_copy_to_iter() to net/
Move hash_and_copy_to_iter() to be with its only caller in networking code. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20230925120309.1731676-13-dhowells@redhat.com cc: Alexander Viro <viro@zeniv.linux.org.uk> cc: Jens Axboe <axboe@kernel.dk> cc: Christoph Hellwig <hch@lst.de> cc: Christian Brauner <christian@brauner.io> cc: Matthew Wilcox <willy@infradead.org> cc: Linus Torvalds <torvalds@linux-foundation.org> cc: David Laight <David.Laight@ACULAB.COM> cc: "David S. Miller" <davem@davemloft.net> cc: Eric Dumazet <edumazet@google.com> cc: Jakub Kicinski <kuba@kernel.org> cc: Paolo Abeni <pabeni@redhat.com> cc: linux-block@vger.kernel.org cc: linux-fsdevel@vger.kernel.org cc: linux-mm@kvack.org cc: netdev@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
David Howells
|
6d0d419914
|
iov_iter, net: Move csum_and_copy_to/from_iter() to net/
Move csum_and_copy_to/from_iter() to net code now that the iteration framework can be #included. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20230925120309.1731676-10-dhowells@redhat.com cc: Alexander Viro <viro@zeniv.linux.org.uk> cc: Jens Axboe <axboe@kernel.dk> cc: Christoph Hellwig <hch@lst.de> cc: Christian Brauner <christian@brauner.io> cc: Matthew Wilcox <willy@infradead.org> cc: Linus Torvalds <torvalds@linux-foundation.org> cc: David Laight <David.Laight@ACULAB.COM> cc: "David S. Miller" <davem@davemloft.net> cc: Eric Dumazet <edumazet@google.com> cc: Jakub Kicinski <kuba@kernel.org> cc: Paolo Abeni <pabeni@redhat.com> cc: linux-block@vger.kernel.org cc: linux-fsdevel@vger.kernel.org cc: linux-mm@kvack.org cc: netdev@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
David Howells
|
c9eec08bac
|
iov_iter: Don't deal with iter->copy_mc in memcpy_from_iter_mc()
iter->copy_mc is only used with a bvec iterator and only by dump_emit_page() in fs/coredump.c so rather than handle this in memcpy_from_iter_mc() where it is checked repeatedly by _copy_from_iter() and copy_page_from_iter_atomic(), Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20230925120309.1731676-9-dhowells@redhat.com cc: Alexander Viro <viro@zeniv.linux.org.uk> cc: Jens Axboe <axboe@kernel.dk> cc: Christoph Hellwig <hch@lst.de> cc: Christian Brauner <christian@brauner.io> cc: Matthew Wilcox <willy@infradead.org> cc: Linus Torvalds <torvalds@linux-foundation.org> cc: David Laight <David.Laight@ACULAB.COM> cc: linux-block@vger.kernel.org cc: linux-fsdevel@vger.kernel.org cc: linux-mm@kvack.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Ingo Molnar
|
8db30574db |
Merge branch 'sched/urgent' into sched/core, to pick up fixes and refresh the branch
Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Jakub Kicinski
|
2606cf059c |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts (or adjacent changes of note). Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Dr. David Alan Gilbert
|
0ebc7feae7 |
powerpc: Use shared font data
PowerPC has a 'btext' font used for the console which is almost identical
to the shared font_sun8x16, so use it rather than duplicating the data.
They were actually identical until about a decade ago when
commit
|
||
|
Liam R. Howlett
|
a8091f039c |
maple_tree: add MAS_UNDERFLOW and MAS_OVERFLOW states
When updating the maple tree iterator to avoid rewalks, an issue was
introduced when shifting beyond the limits. This can be seen by trying to
go to the previous address of 0, which would set the maple node to
MAS_NONE and keep the range as the last entry.
Subsequent calls to mas_find() would then search upwards from mas->last
and skip the value at mas->index/mas->last. This showed up as a bug in
mprotect which skips the actual VMA at the current range after attempting
to go to the previous VMA from 0.
Since MAS_NONE may already be set when searching for a value that isn't
contained within a node, changing the handling of MAS_NONE in mas_find()
would make the code more complicated and error prone. Furthermore, there
was no way to tell which limit was hit, and thus which action to take
(next or the entry at the current range).
This solution is to add two states to track what happened with the
previous iterator action. This allows for the expected behaviour of the
next command to return the correct item (either the item at the range
requested, or the next/previous).
Tests are also added and updated accordingly.
Link: https://lkml.kernel.org/r/20230921181236.509072-3-Liam.Howlett@oracle.com
Link: https://gist.github.com/heatd/85d2971fae1501b55b6ea401fbbe485b
Link: https://lore.kernel.org/linux-mm/20230921181236.509072-1-Liam.Howlett@oracle.com/
Fixes:
|
||
|
Jinjie Ruan
|
8040345fda |
kunit: test: Fix the possible memory leak in executor_test
When CONFIG_KUNIT_ALL_TESTS=y, making CONFIG_DEBUG_KMEMLEAK=y and
CONFIG_DEBUG_KMEMLEAK_AUTO_SCAN=y, the below memory leak is detected.
If kunit_filter_suites() succeeds, not only copy but also filtered_suite
and filtered_suite->test_cases should be freed.
So as Rae suggested, to avoid the suite set never be freed when
KUNIT_ASSERT_EQ() fails and exits after kunit_filter_suites() succeeds,
update kfree_at_end() func to free_suite_set_at_end() to use
kunit_free_suite_set() to free them as kunit_module_exit() and
kunit_run_all_tests() do it. As the second arg got of
free_suite_set_at_end() is a local variable, copy it for free to avoid
wild-memory-access. After applying this patch, the following memory leak
is never detected.
unreferenced object 0xffff8881001de400 (size 1024):
comm "kunit_try_catch", pid 1396, jiffies 4294720452 (age 932.801s)
hex dump (first 32 bytes):
73 75 69 74 65 32 00 00 00 00 00 00 00 00 00 00 suite2..........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff817db753>] __kmalloc_node_track_caller+0x53/0x150
[<ffffffff817bd242>] kmemdup+0x22/0x50
[<ffffffff829e961d>] kunit_filter_suites+0x44d/0xcc0
[<ffffffff829eb69f>] filter_suites_test+0x12f/0x360
[<ffffffff829e802a>] kunit_generic_run_threadfn_adapter+0x4a/0x90
[<ffffffff81236fc6>] kthread+0x2b6/0x380
[<ffffffff81096afd>] ret_from_fork+0x2d/0x70
[<ffffffff81003511>] ret_from_fork_asm+0x11/0x20
unreferenced object 0xffff8881052cd388 (size 192):
comm "kunit_try_catch", pid 1396, jiffies 4294720452 (age 932.801s)
hex dump (first 32 bytes):
a0 85 9e 82 ff ff ff ff 80 cd 7c 84 ff ff ff ff ..........|.....
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff817dbad2>] __kmalloc+0x52/0x150
[<ffffffff829e9651>] kunit_filter_suites+0x481/0xcc0
[<ffffffff829eb69f>] filter_suites_test+0x12f/0x360
[<ffffffff829e802a>] kunit_generic_run_threadfn_adapter+0x4a/0x90
[<ffffffff81236fc6>] kthread+0x2b6/0x380
[<ffffffff81096afd>] ret_from_fork+0x2d/0x70
[<ffffffff81003511>] ret_from_fork_asm+0x11/0x20
unreferenced object 0xffff888100da8400 (size 1024):
comm "kunit_try_catch", pid 1398, jiffies 4294720454 (age 781.945s)
hex dump (first 32 bytes):
73 75 69 74 65 32 00 00 00 00 00 00 00 00 00 00 suite2..........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff817db753>] __kmalloc_node_track_caller+0x53/0x150
[<ffffffff817bd242>] kmemdup+0x22/0x50
[<ffffffff829e961d>] kunit_filter_suites+0x44d/0xcc0
[<ffffffff829eb13f>] filter_suites_test_glob_test+0x12f/0x560
[<ffffffff829e802a>] kunit_generic_run_threadfn_adapter+0x4a/0x90
[<ffffffff81236fc6>] kthread+0x2b6/0x380
[<ffffffff81096afd>] ret_from_fork+0x2d/0x70
[<ffffffff81003511>] ret_from_fork_asm+0x11/0x20
unreferenced object 0xffff888105117878 (size 96):
comm "kunit_try_catch", pid 1398, jiffies 4294720454 (age 781.945s)
hex dump (first 32 bytes):
a0 85 9e 82 ff ff ff ff a0 ac 7c 84 ff ff ff ff ..........|.....
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff817dbad2>] __kmalloc+0x52/0x150
[<ffffffff829e9651>] kunit_filter_suites+0x481/0xcc0
[<ffffffff829eb13f>] filter_suites_test_glob_test+0x12f/0x560
[<ffffffff829e802a>] kunit_generic_run_threadfn_adapter+0x4a/0x90
[<ffffffff81236fc6>] kthread+0x2b6/0x380
[<ffffffff81096afd>] ret_from_fork+0x2d/0x70
[<ffffffff81003511>] ret_from_fork_asm+0x11/0x20
unreferenced object 0xffff888102c31c00 (size 1024):
comm "kunit_try_catch", pid 1404, jiffies 4294720460 (age 781.948s)
hex dump (first 32 bytes):
6e 6f 72 6d 61 6c 5f 73 75 69 74 65 00 00 00 00 normal_suite....
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff817db753>] __kmalloc_node_track_caller+0x53/0x150
[<ffffffff817bd242>] kmemdup+0x22/0x50
[<ffffffff829ecf17>] kunit_filter_attr_tests+0xf7/0x860
[<ffffffff829e99ff>] kunit_filter_suites+0x82f/0xcc0
[<ffffffff829ea975>] filter_attr_test+0x195/0x5f0
[<ffffffff829e802a>] kunit_generic_run_threadfn_adapter+0x4a/0x90
[<ffffffff81236fc6>] kthread+0x2b6/0x380
[<ffffffff81096afd>] ret_from_fork+0x2d/0x70
[<ffffffff81003511>] ret_from_fork_asm+0x11/0x20
unreferenced object 0xffff8881052cd250 (size 192):
comm "kunit_try_catch", pid 1404, jiffies 4294720460 (age 781.948s)
hex dump (first 32 bytes):
a0 85 9e 82 ff ff ff ff 00 a9 7c 84 ff ff ff ff ..........|.....
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff817dbad2>] __kmalloc+0x52/0x150
[<ffffffff829ecfc1>] kunit_filter_attr_tests+0x1a1/0x860
[<ffffffff829e99ff>] kunit_filter_suites+0x82f/0xcc0
[<ffffffff829ea975>] filter_attr_test+0x195/0x5f0
[<ffffffff829e802a>] kunit_generic_run_threadfn_adapter+0x4a/0x90
[<ffffffff81236fc6>] kthread+0x2b6/0x380
[<ffffffff81096afd>] ret_from_fork+0x2d/0x70
[<ffffffff81003511>] ret_from_fork_asm+0x11/0x20
unreferenced object 0xffff888104f4e400 (size 1024):
comm "kunit_try_catch", pid 1408, jiffies 4294720464 (age 781.944s)
hex dump (first 32 bytes):
73 75 69 74 65 00 00 00 00 00 00 00 00 00 00 00 suite...........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff817db753>] __kmalloc_node_track_caller+0x53/0x150
[<ffffffff817bd242>] kmemdup+0x22/0x50
[<ffffffff829ecf17>] kunit_filter_attr_tests+0xf7/0x860
[<ffffffff829e99ff>] kunit_filter_suites+0x82f/0xcc0
[<ffffffff829e9fc3>] filter_attr_skip_test+0x133/0x6e0
[<ffffffff829e802a>] kunit_generic_run_threadfn_adapter+0x4a/0x90
[<ffffffff81236fc6>] kthread+0x2b6/0x380
[<ffffffff81096afd>] ret_from_fork+0x2d/0x70
[<ffffffff81003511>] ret_from_fork_asm+0x11/0x20
unreferenced object 0xffff8881052cc620 (size 192):
comm "kunit_try_catch", pid 1408, jiffies 4294720464 (age 781.944s)
hex dump (first 32 bytes):
a0 85 9e 82 ff ff ff ff c0 a8 7c 84 ff ff ff ff ..........|.....
00 00 00 00 00 00 00 00 02 00 00 00 02 00 00 00 ................
backtrace:
[<ffffffff817dbad2>] __kmalloc+0x52/0x150
[<ffffffff829ecfc1>] kunit_filter_attr_tests+0x1a1/0x860
[<ffffffff829e99ff>] kunit_filter_suites+0x82f/0xcc0
[<ffffffff829e9fc3>] filter_attr_skip_test+0x133/0x6e0
[<ffffffff829e802a>] kunit_generic_run_threadfn_adapter+0x4a/0x90
[<ffffffff81236fc6>] kthread+0x2b6/0x380
[<ffffffff81096afd>] ret_from_fork+0x2d/0x70
[<ffffffff81003511>] ret_from_fork_asm+0x11/0x20
Fixes:
|
||
|
Jinjie Ruan
|
24de14c98b |
kunit: Fix possible memory leak in kunit_filter_suites()
If the outer layer for loop is iterated more than once and it fails not
in the first iteration, the filtered_suite and filtered_suite->test_cases
allocated in the last kunit_filter_attr_tests() in last inner for loop
is leaked.
So add a new free_filtered_suite err label and free the filtered_suite
and filtered_suite->test_cases so far. And change kmalloc_array of copy
to kcalloc to Clear the copy to make the kfree safe.
Fixes:
|
||
|
Jinjie Ruan
|
e44679515a |
kunit: Fix the wrong kfree of copy for kunit_filter_suites()
If the outer layer for loop is iterated more than once and it fails not
in the first iteration, the copy pointer has been moved. So it should free
the original copy's backup copy_start.
Fixes:
|
||
|
Jinjie Ruan
|
a6074cf012 |
kunit: Fix missed memory release in kunit_free_suite_set()
modprobe cpumask_kunit and rmmod cpumask_kunit, kmemleak detect
a suspected memory leak as below.
If kunit_filter_suites() in kunit_module_init() succeeds, the
suite_set.start will not be NULL and the kunit_free_suite_set() in
kunit_module_exit() should free all the memory which has not
been freed. However the test_cases in suites is left out.
unreferenced object 0xffff54ac47e83200 (size 512):
comm "modprobe", pid 592, jiffies 4294913238 (age 1367.612s)
hex dump (first 32 bytes):
84 13 1a f0 d3 b6 ff ff 30 68 1a f0 d3 b6 ff ff ........0h......
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000008dec63a2>] slab_post_alloc_hook+0xb8/0x368
[<00000000ec280d8e>] __kmem_cache_alloc_node+0x174/0x290
[<00000000896c7740>] __kmalloc+0x60/0x2c0
[<000000007a50fa06>] kunit_filter_suites+0x254/0x5b8
[<0000000078cc98e2>] kunit_module_notify+0xf4/0x240
[<0000000033cea952>] notifier_call_chain+0x98/0x17c
[<00000000973d05cc>] notifier_call_chain_robust+0x4c/0xa4
[<000000005f95895f>] blocking_notifier_call_chain_robust+0x4c/0x74
[<0000000048e36fa7>] load_module+0x1a2c/0x1c40
[<0000000004eb8a91>] init_module_from_file+0x94/0xcc
[<0000000037dbba28>] idempotent_init_module+0x184/0x278
[<00000000161b75cb>] __arm64_sys_finit_module+0x68/0xa8
[<000000006dc1669b>] invoke_syscall+0x44/0x100
[<00000000fa87e304>] el0_svc_common.constprop.1+0x68/0xe0
[<000000009d8ad866>] do_el0_svc+0x1c/0x28
[<000000005b83c607>] el0_svc+0x3c/0xc4
Fixes:
|
||
|
David Howells
|
f1982740f5
|
iov_iter: Convert iterate*() to inline funcs
Convert the iov_iter iteration macros to inline functions to make the code easier to follow. The functions are marked __always_inline as we don't want to end up with indirect calls in the code. This, however, leaves dealing with ->copy_mc in an awkard situation since the step function (memcpy_from_iter_mc()) needs to test the flag in the iterator, but isn't passed the iterator. This will be dealt with in a follow-up patch. The variable names in the per-type iterator functions have been harmonised as much as possible and made clearer as to the variable purpose. The iterator functions are also moved to a header file so that other operations that need to scan over an iterator can be added. For instance, the rbd driver could use this to scan a buffer to see if it is all zeros and libceph could use this to generate a crc. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/3710261.1691764329@warthog.procyon.org.uk/ # v1 Link: https://lore.kernel.org/r/855.1692047347@warthog.procyon.org.uk/ # v2 Link: https://lore.kernel.org/r/20230816120741.534415-1-dhowells@redhat.com/ # v3 Link: https://lore.kernel.org/r/20230925120309.1731676-8-dhowells@redhat.com cc: Alexander Viro <viro@zeniv.linux.org.uk> cc: Jens Axboe <axboe@kernel.dk> cc: Christoph Hellwig <hch@lst.de> cc: Christian Brauner <christian@brauner.io> cc: Matthew Wilcox <willy@infradead.org> cc: Linus Torvalds <torvalds@linux-foundation.org> cc: David Laight <David.Laight@ACULAB.COM> cc: linux-block@vger.kernel.org cc: linux-fsdevel@vger.kernel.org cc: linux-mm@kvack.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
David Howells
|
f1b4cb650b
|
iov_iter: Derive user-backedness from the iterator type
Use the iterator type to determine whether an iterator is user-backed or not rather than using a special flag for it. Now that ITER_UBUF and ITER_IOVEC are 0 and 1, they can be checked with a single comparison. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20230925120309.1731676-7-dhowells@redhat.com cc: Alexander Viro <viro@zeniv.linux.org.uk> cc: Jens Axboe <axboe@kernel.dk> cc: Christoph Hellwig <hch@lst.de> cc: Christian Brauner <christian@brauner.io> cc: Matthew Wilcox <willy@infradead.org> cc: Linus Torvalds <torvalds@linux-foundation.org> cc: David Laight <David.Laight@ACULAB.COM> cc: linux-block@vger.kernel.org cc: linux-fsdevel@vger.kernel.org cc: linux-mm@kvack.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Azeem Shaikh
|
6cd59324c6 |
kobject: Replace strlcpy with strscpy
strlcpy() reads the entire source buffer first. This read may exceed the destination size limit. This is both inefficient and can lead to linear read overflows if a source string is not NUL-terminated [1]. In an effort to remove strlcpy() completely [2], replace strlcpy() here with strscpy(). Direct replacement is safe here since return value of -errno is used to check for truncation instead of sizeof(dest). [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy [2] https://github.com/KSPP/linux/issues/89 Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230831140104.207019-1-azeemshaikh38@gmail.com Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Randy Dunlap
|
36ee98b555 |
argv_split: fix kernel-doc warnings
Use proper kernel-doc notation to prevent build warnings: lib/argv_split.c:36: warning: Function parameter or member 'argv' not described in 'argv_free' lib/argv_split.c:61: warning: No description found for return value of 'argv_split' Link: https://lkml.kernel.org/r/20230912060838.3794-1-rdunlap@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Randy Dunlap
|
c80da1fb85 |
scatterlist: add missing function params to kernel-doc
Describe missing function parameters to prevent kernel-doc warnings: lib/scatterlist.c:288: warning: Function parameter or member 'first_chunk' not described in '__sg_alloc_table' lib/scatterlist.c:800: warning: Function parameter or member 'flags' not described in 'sg_miter_start' Link: https://lkml.kernel.org/r/20230912060848.4673-1-rdunlap@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Michal Wajdeczko
|
ee5f8cc277 |
kunit: Reset test status on each param iteration
If we skip one parametrized test case then test status remains
SKIP for all subsequent test params leading to wrong reports:
$ ./tools/testing/kunit/kunit.py run \
--kunitconfig ./lib/kunit/.kunitconfig *.example_params*
--raw_output \
[ ] Starting KUnit Kernel (1/1)...
KTAP version 1
1..1
# example: initializing suite
KTAP version 1
# Subtest: example
# module: kunit_example_test
1..1
KTAP version 1
# Subtest: example_params_test
# example_params_test: initializing
# example_params_test: cleaning up
ok 1 example value 3 # SKIP unsupported param value 3
# example_params_test: initializing
# example_params_test: cleaning up
ok 2 example value 2 # SKIP unsupported param value 3
# example_params_test: initializing
# example_params_test: cleaning up
ok 3 example value 1 # SKIP unsupported param value 3
# example_params_test: initializing
# example_params_test: cleaning up
ok 4 example value 0 # SKIP unsupported param value 0
# example_params_test: pass:0 fail:0 skip:4 total:4
ok 1 example_params_test # SKIP unsupported param value 0
# example: exiting suite
ok 1 example # SKIP
Reset test status and status comment after each param iteration
to avoid using stale results.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: David Gow <davidgow@google.com>
Cc: Rae Moar <rmoar@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
|
||
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Richard Fitzgerald
|
53568b720c |
kunit: string-stream: Test performance of string_stream
Add a test of the speed and memory use of string_stream. string_stream_performance_test() doesn't actually "test" anything (it cannot fail unless the system has run out of allocatable memory) but it measures the speed and memory consumption of the string_stream and reports the result. This allows changes in the string_stream implementation to be compared. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
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Richard Fitzgerald
|
05e2006ce4 |
kunit: Use string_stream for test log
Replace the fixed-size log buffer with a string_stream so that the log can grow as lines are added. The existing kunit log tests have been updated for using a string_stream as the log. No new test have been added because there are already tests for the underlying string_stream. As the log tests now depend on string_stream functions they cannot build when kunit-test is a module. They have been surrounded by a #if to replace them with skipping version when the test is build as a module. Though this isn't pretty, it avoids moving code to another file while that code is also being changed. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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|
Richard Fitzgerald
|
d1a0d699bf |
kunit: string-stream: Add tests for freeing resource-managed string_stream
string_stream_managed_free_test() allocates a resource-managed string_stream and tests that kunit_free_string_stream() calls string_stream_destroy(). string_stream_resource_free_test() allocates a resource-managed string_stream and tests that string_stream_destroy() is called when the test resources are cleaned up. The old string_stream_init_test() has been split into two tests, one for kunit_alloc_string_stream() and the other for alloc_string_stream(). Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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|
Richard Fitzgerald
|
a3fdf78478 |
kunit: string-stream: Decouple string_stream from kunit
Re-work string_stream so that it is not tied to a struct kunit. This is
to allow using it for the log of struct kunit_suite.
Instead of resource-managing individual allocations the whole string_stream
can be resource-managed, if required.
alloc_string_stream() now allocates a string stream that is
not resource-managed.
string_stream_destroy() now works on an unmanaged string_stream
allocated by alloc_string_stream() and frees the entire
string_stream (previously it only freed the fragments).
string_stream_clear() has been made public for callers that
want to free the fragments without destroying the string_stream.
For resource-managed allocations use kunit_alloc_string_stream()
and kunit_free_string_stream().
In addition to this, string_stream_get_string() now returns an
unmanaged buffer that the caller must kfree().
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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||
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Richard Fitzgerald
|
20631e154c |
kunit: string-stream: Add kunit_alloc_string_stream()
Add function kunit_alloc_string_stream() to do a resource-managed allocation of a string stream, and corresponding kunit_free_string_stream() to free the resource-managed stream. This is preparing for decoupling the string_stream implementation from struct kunit, to reduce the amount of code churn when that happens. Currently: - kunit_alloc_string_stream() only calls alloc_string_stream(). - kunit_free_string_stream() takes a struct kunit* which isn't used yet. Callers of the old alloc_string_stream() and string_stream_destroy() are all requesting a managed allocation so have been changed to use the new functions. alloc_string_stream() has been temporarily made static because its current behavior has been replaced with kunit_alloc_string_stream(). Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Richard Fitzgerald
|
7b4481cbe7 |
kunit: Don't use a managed alloc in is_literal()
There is no need to use a test-managed alloc in is_literal(). The function frees the temporary buffer before returning. This removes the only use of the test and gfp members of struct string_stream outside of the string_stream implementation. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Richard Fitzgerald
|
1f58cdb173 |
kunit: string-stream-test: Add cases for string_stream newline appending
Add test cases for testing the string_stream feature that appends a newline to strings that do not already end with a newline. string_stream_no_auto_newline_test() tests with this feature disabled. Newlines should not be added or dropped. string_stream_auto_newline_test() tests with this feature enabled. Newlines should be added to lines that do not end with a newline. string_stream_append_auto_newline_test() tests appending the content of one stream to another stream when the target stream has newline appending enabled. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Richard Fitzgerald
|
a5abe7b201 |
kunit: string-stream: Add option to make all lines end with newline
Add an optional feature to string_stream that will append a newline to any added string that does not already end with a newline. The purpose of this is so that string_stream can be used to collect log lines. This is enabled/disabled by calling string_stream_set_append_newlines(). Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Richard Fitzgerald
|
4551caca6a |
kunit: string-stream: Improve testing of string_stream
Replace the minimal tests with more-thorough testing. string_stream_init_test() tests that struct string_stream is initialized correctly. string_stream_line_add_test() adds a series of numbered lines and checks that the resulting string contains all the lines. string_stream_variable_length_line_test() adds a large number of lines of varying length to create many fragments, then tests that all lines are present. string_stream_append_test() tests various cases of using string_stream_append() to append the content of one stream to another. Adds string_stream_append_empty_string_test() to test that adding an empty string to a string_stream doesn't create a new empty fragment. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Richard Fitzgerald
|
5c54c9ebb1 |
kunit: string-stream: Don't create a fragment for empty strings
If the result of the formatted string is an empty string just return instead of creating an empty fragment. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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|
David S. Miller
|
685c6d5b2c |
Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Alexei Starovoitov says: ==================== The following pull-request contains BPF updates for your *net-next* tree. We've added 73 non-merge commits during the last 9 day(s) which contain a total of 79 files changed, 5275 insertions(+), 600 deletions(-). The main changes are: 1) Basic BTF validation in libbpf, from Andrii Nakryiko. 2) bpf_assert(), bpf_throw(), exceptions in bpf progs, from Kumar Kartikeya Dwivedi. 3) next_thread cleanups, from Oleg Nesterov. 4) Add mcpu=v4 support to arm32, from Puranjay Mohan. 5) Add support for __percpu pointers in bpf progs, from Yonghong Song. 6) Fix bpf tailcall interaction with bpf trampoline, from Leon Hwang. 7) Raise irq_work in bpf_mem_alloc while irqs are disabled to improve refill probabablity, from Hou Tao. Please consider pulling these changes from: git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git Thanks a lot! Also thanks to reporters, reviewers and testers of commits in this pull-request: Alan Maguire, Andrey Konovalov, Dave Marchevsky, "Eric W. Biederman", Jiri Olsa, Maciej Fijalkowski, Quentin Monnet, Russell King (Oracle), Song Liu, Stanislav Fomichev, Yonghong Song ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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Puranjay Mohan
|
daabb2b098 |
bpf/tests: add tests for cpuv4 instructions
The BPF JITs now support cpuv4 instructions. Add tests for these new instructions to the test suite: 1. Sign extended Load 2. Sign extended Mov 3. Unconditional byte swap 4. Unconditional jump with 32-bit offset 5. Signed division and modulo Signed-off-by: Puranjay Mohan <puranjay12@gmail.com> Link: https://lore.kernel.org/r/20230907230550.1417590-9-puranjay12@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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|
Yury Norov
|
9ecea9ae4d |
sched/topology: Handle NUMA_NO_NODE in sched_numa_find_nth_cpu()
sched_numa_find_nth_cpu() doesn't handle NUMA_NO_NODE properly, and may crash kernel if passed with it. On the other hand, the only user of sched_numa_find_nth_cpu() has to check NUMA_NO_NODE case explicitly. It would be easier for users if this logic will get moved into sched_numa_find_nth_cpu(). Signed-off-by: Yury Norov <yury.norov@gmail.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Mel Gorman <mgorman@suse.de> Link: https://lore.kernel.org/r/20230819141239.287290-6-yury.norov@gmail.com |
||
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Maximilian Luz
|
e4c89f9380 |
lib/ucs2_string: Add UCS-2 strscpy function
Add a ucs2_strscpy() function for UCS-2 strings. The behavior is equivalent to the standard strscpy() function, just for 16-bit character UCS-2 strings. Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com> Reviewed-by: Bjorn Andersson <andersson@kernel.org> Link: https://lore.kernel.org/r/20230827211408.689076-2-luzmaximilian@gmail.com Signed-off-by: Bjorn Andersson <andersson@kernel.org> |
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Linus Torvalds
|
fb52c87a06 |
linux-kselftest-kunit-6.6-rc2
This kunit update for Linux 6.6-rc2 consists of important fixes to possible memory leak, null-ptr-deref, wild-memory-access, and error path bugs. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmT/PB8ACgkQCwJExA0N QxwWCg//fPTPHu59xQ/SOeVFEeaKGB77FwnmG+JIdryd+4oVEnBehk/4TZCZTvMe v7wLwaB9WOxkFWztWIlEEsYApZoFbLSWYx8iEua5QPaPBI81XAZGYv1j9u6z/vCn 62boIq+TVusokEuNzS6zb8ZKd8A44zUTswdfVmiZ7Itf0HSe4xYNFdhDU93AtZOo oHtR3ok6dTj/lYp4Sp5BC4JRog3OhSdme2+whLfgH9YY1HRTHBxScSHYDCTn9OPT ZbaZJW4PJsw1mx7fF/ZS5Zuo1zey27LoPuEJu9C46kTLSXEGWAO8L5rV9G2gJLHg LAMjvcgfkEDgWhrWRaFcP2tsYqn+Dxsb/Yvmrtq3tFJDYbatUTABxhuO/6T8wbfY YS8ksIdXz8koDTI2ShpSd+1Gv7KEjXM7XhoO8GVcVg3pVL/niKgPLdxEsE8dgaoE XRip1IJBs8A+9c0xE7325wR6op6IKD0xM0xGTTjYEbGHqKjZJgg72zbCBPMGcWDZ mGlv53sPlDTRh0B8B/M+LnUpdJ5gRMf800CgDl3mKUN1b8fvqmsW3HjO5wWNo/cw I9JSJUrSxkYHUbJVtMasrhseRHY+V+ysvvzl/Z39RoVMPMonh+EIY6dG07aAU6lA jIIL6k1KwJnox4+dFgkShrnNqcZF/6INok0wzzSnJBwBKKD8Aac= =wiS6 -----END PGP SIGNATURE----- Merge tag 'linux-kselftest-kunit-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kunit fixes from Shuah Khan: "Fixes to possible memory leak, null-ptr-deref, wild-memory-access, and error path bugs" * tag 'linux-kselftest-kunit-6.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: Fix possible memory leak in kunit_filter_suites() kunit: Fix possible null-ptr-deref in kunit_parse_glob_filter() kunit: Fix the wrong err path and add goto labels in kunit_filter_suites() kunit: Fix wild-memory-access bug in kunit_free_suite_set() kunit: test: Make filter strings in executor_test writable |
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Kent Overstreet
|
21db931445 |
lib: Export errname
errname() returns the name of an errcode; this functionality is otherwise only available for error pointers via %pE - bcachefs uses this for better error messages. Signed-off-by: Christopher James Halse Rogers <raof@ubuntu.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
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Kent Overstreet
|
83feeb1955 |
lib/string_helpers: string_get_size() now returns characters wrote
printbuf now needs to know the number of characters that would have been written if the buffer was too small, like snprintf(); this changes string_get_size() to return the the return value of snprintf(). Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> |
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Ard Biesheuvel
|
b089ea3cc3 |
lib/raid6: Drop IA64 support
Drop Itanium support from the RAID6 code, and along with it, the 16x and 32x unrolled versions, which were only used by IA64. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> |
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Ard Biesheuvel
|
cf8e865810 |
arch: Remove Itanium (IA-64) architecture
The Itanium architecture is obsolete, and an informal survey [0] reveals that any residual use of Itanium hardware in production is mostly HP-UX or OpenVMS based. The use of Linux on Itanium appears to be limited to enthusiasts that occasionally boot a fresh Linux kernel to see whether things are still working as intended, and perhaps to churn out some distro packages that are rarely used in practice. None of the original companies behind Itanium still produce or support any hardware or software for the architecture, and it is listed as 'Orphaned' in the MAINTAINERS file, as apparently, none of the engineers that contributed on behalf of those companies (nor anyone else, for that matter) have been willing to support or maintain the architecture upstream or even be responsible for applying the odd fix. The Intel firmware team removed all IA-64 support from the Tianocore/EDK2 reference implementation of EFI in 2018. (Itanium is the original architecture for which EFI was developed, and the way Linux supports it deviates significantly from other architectures.) Some distros, such as Debian and Gentoo, still maintain [unofficial] ia64 ports, but many have dropped support years ago. While the argument is being made [1] that there is a 'for the common good' angle to being able to build and run existing projects such as the Grid Community Toolkit [2] on Itanium for interoperability testing, the fact remains that none of those projects are known to be deployed on Linux/ia64, and very few people actually have access to such a system in the first place. Even if there were ways imaginable in which Linux/ia64 could be put to good use today, what matters is whether anyone is actually doing that, and this does not appear to be the case. There are no emulators widely available, and so boot testing Itanium is generally infeasible for ordinary contributors. GCC still supports IA-64 but its compile farm [3] no longer has any IA-64 machines. GLIBC would like to get rid of IA-64 [4] too because it would permit some overdue code cleanups. In summary, the benefits to the ecosystem of having IA-64 be part of it are mostly theoretical, whereas the maintenance overhead of keeping it supported is real. So let's rip off the band aid, and remove the IA-64 arch code entirely. This follows the timeline proposed by the Debian/ia64 maintainer [5], which removes support in a controlled manner, leaving IA-64 in a known good state in the most recent LTS release. Other projects will follow once the kernel support is removed. [0] https://lore.kernel.org/all/CAMj1kXFCMh_578jniKpUtx_j8ByHnt=s7S+yQ+vGbKt9ud7+kQ@mail.gmail.com/ [1] https://lore.kernel.org/all/0075883c-7c51-00f5-2c2d-5119c1820410@web.de/ [2] https://gridcf.org/gct-docs/latest/index.html [3] https://cfarm.tetaneutral.net/machines/list/ [4] https://lore.kernel.org/all/87bkiilpc4.fsf@mid.deneb.enyo.de/ [5] https://lore.kernel.org/all/ff58a3e76e5102c94bb5946d99187b358def688a.camel@physik.fu-berlin.de/ Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> |
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|
David Howells
|
a3c57ab79a |
iov_iter: Kunit tests for page extraction
Add some kunit tests for page extraction for ITER_BVEC, ITER_KVEC and ITER_XARRAY type iterators. ITER_UBUF and ITER_IOVEC aren't dealt with as they require userspace VM interaction. ITER_DISCARD isn't dealt with either as that can't be extracted. Signed-off-by: David Howells <dhowells@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Christian Brauner <brauner@kernel.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: David Hildenbrand <david@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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|
David Howells
|
2d71340ff1 |
iov_iter: Kunit tests for copying to/from an iterator
Add some kunit tests for page extraction for ITER_BVEC, ITER_KVEC and ITER_XARRAY type iterators. ITER_UBUF and ITER_IOVEC aren't dealt with as they require userspace VM interaction. ITER_DISCARD isn't dealt with either as that does nothing. Signed-off-by: David Howells <dhowells@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Christian Brauner <brauner@kernel.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: David Hildenbrand <david@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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|
David Howells
|
f741bd7178 |
iov_iter: Fix iov_iter_extract_pages() with zero-sized entries
iov_iter_extract_pages() doesn't correctly handle skipping over initial
zero-length entries in ITER_KVEC and ITER_BVEC-type iterators.
The problem is that it accidentally reduces maxsize to 0 when it
skipping and thus runs to the end of the array and returns 0.
Fix this by sticking the calculated size-to-copy in a new variable
rather than back in maxsize.
Fixes:
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||
|
Linus Torvalds
|
3095dd99dd |
XArray/IDA updates for 6.6
- Fix a bug encountered by people using bittorrent where they'd get
NULL pointer dereferences on page cache lookups when using XFS
- Two documentation fixes
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Merge tag 'xarray-6.6' of git://git.infradead.org/users/willy/xarray
Pull xarray fixes from Matthew Wilcox:
- Fix a bug encountered by people using bittorrent where they'd get
NULL pointer dereferences on page cache lookups when using XFS
- Two documentation fixes
* tag 'xarray-6.6' of git://git.infradead.org/users/willy/xarray:
idr: fix param name in idr_alloc_cyclic() doc
xarray: Document necessary flag in alloc functions
XArray: Do not return sibling entries from xa_load()
|
||
|
Linus Torvalds
|
12952b6bbd |
LoongArch changes for v6.6
1, Allow usage of LSX/LASX in the kernel;
2, Add SIMD-optimized RAID5/RAID6 routines;
3, Add Loongson Binary Translation (LBT) extension support;
4, Add basic KGDB & KDB support;
5, Add building with kcov coverage;
6, Add KFENCE (Kernel Electric-Fence) support;
7, Add KASAN (Kernel Address Sanitizer) support;
8, Some bug fixes and other small changes;
9, Update the default config file.
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Merge tag 'loongarch-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- Allow usage of LSX/LASX in the kernel, and use them for
SIMD-optimized RAID5/RAID6 routines
- Add Loongson Binary Translation (LBT) extension support
- Add basic KGDB & KDB support
- Add building with kcov coverage
- Add KFENCE (Kernel Electric-Fence) support
- Add KASAN (Kernel Address Sanitizer) support
- Some bug fixes and other small changes
- Update the default config file
* tag 'loongarch-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (25 commits)
LoongArch: Update Loongson-3 default config file
LoongArch: Add KASAN (Kernel Address Sanitizer) support
LoongArch: Simplify the processing of jumping new kernel for KASLR
kasan: Add (pmd|pud)_init for LoongArch zero_(pud|p4d)_populate process
kasan: Add __HAVE_ARCH_SHADOW_MAP to support arch specific mapping
LoongArch: Add KFENCE (Kernel Electric-Fence) support
LoongArch: Get partial stack information when providing regs parameter
LoongArch: mm: Add page table mapped mode support for virt_to_page()
kfence: Defer the assignment of the local variable addr
LoongArch: Allow building with kcov coverage
LoongArch: Provide kaslr_offset() to get kernel offset
LoongArch: Add basic KGDB & KDB support
LoongArch: Add Loongson Binary Translation (LBT) extension support
raid6: Add LoongArch SIMD recovery implementation
raid6: Add LoongArch SIMD syndrome calculation
LoongArch: Add SIMD-optimized XOR routines
LoongArch: Allow usage of LSX/LASX in the kernel
LoongArch: Define symbol 'fault' as a local label in fpu.S
LoongArch: Adjust {copy, clear}_user exception handler behavior
LoongArch: Use static defined zero page rather than allocated
...
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||
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WANG Xuerui
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f209132104 |
raid6: Add LoongArch SIMD recovery implementation
Similar to the syndrome calculation, the recovery algorithms also work on 64 bytes at a time to align with the L1 cache line size of current and future LoongArch cores (that we care about). Which means unrolled-by-4 LSX and unrolled-by-2 LASX code. The assembly is originally based on the x86 SSSE3/AVX2 ports, but register allocation has been redone to take advantage of LSX/LASX's 32 vector registers, and instruction sequence has been optimized to suit (e.g. LoongArch can perform per-byte srl and andi on vectors, but x86 cannot). Performance numbers measured by instrumenting the raid6test code, on a 3A5000 system clocked at 2.5GHz: > lasx 2data: 354.987 MiB/s > lasx datap: 350.430 MiB/s > lsx 2data: 340.026 MiB/s > lsx datap: 337.318 MiB/s > intx1 2data: 164.280 MiB/s > intx1 datap: 187.966 MiB/s Because recovery algorithms are chosen solely based on priority and availability, lasx is marked as priority 2 and lsx priority 1. At least for the current generation of LoongArch micro-architectures, LASX should always be faster than LSX whenever supported, and have similar power consumption characteristics (because the only known LASX-capable uarch, the LA464, always compute the full 256-bit result for vector ops). Acked-by: Song Liu <song@kernel.org> Signed-off-by: WANG Xuerui <git@xen0n.name> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> |
||
|
WANG Xuerui
|
8f3f06dfd6 |
raid6: Add LoongArch SIMD syndrome calculation
The algorithms work on 64 bytes at a time, which is the L1 cache line size of all current and future LoongArch cores (that we care about), as confirmed by Huacai. The code is based on the generic int.uc algorithm, unrolled 4 times for LSX and 2 times for LASX. Further unrolling does not meaningfully improve the performance according to experiments. Performance numbers measured during system boot on a 3A5000 @ 2.5GHz: > raid6: lasx gen() 12726 MB/s > raid6: lsx gen() 10001 MB/s > raid6: int64x8 gen() 2876 MB/s > raid6: int64x4 gen() 3867 MB/s > raid6: int64x2 gen() 2531 MB/s > raid6: int64x1 gen() 1945 MB/s Comparison of xor() speeds (from different boots but meaningful anyway): > lasx: 11226 MB/s > lsx: 6395 MB/s > int64x4: 2147 MB/s Performance as measured by raid6test: > raid6: lasx gen() 25109 MB/s > raid6: lsx gen() 13233 MB/s > raid6: int64x8 gen() 4164 MB/s > raid6: int64x4 gen() 6005 MB/s > raid6: int64x2 gen() 5781 MB/s > raid6: int64x1 gen() 4119 MB/s > raid6: using algorithm lasx gen() 25109 MB/s > raid6: .... xor() 14439 MB/s, rmw enabled Acked-by: Song Liu <song@kernel.org> Signed-off-by: WANG Xuerui <git@xen0n.name> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> |
||
|
Ariel Marcovitch
|
2a15de80dd |
idr: fix param name in idr_alloc_cyclic() doc
The relevant parameter is 'start' and not 'nextid'
Fixes:
|
||
|
Philipp Stanner
|
e7716c74e3 |
xarray: Document necessary flag in alloc functions
Adds a new line to the docstrings of functions wrapping __xa_alloc() and __xa_alloc_cyclic(), informing about the necessity of flag XA_FLAGS_ALLOC being set previously. The documentation so far says that functions wrapping __xa_alloc() and __xa_alloc_cyclic() are supposed to return either -ENOMEM or -EBUSY in case of an error. If the xarray has been initialized without the flag XA_FLAGS_ALLOC, however, they fail with a different, undocumented error code. As hinted at in Documentation/core-api/xarray.rst, wrappers around these functions should only be invoked when the flag has been set. The functions' documentation should reflect that as well. Signed-off-by: Philipp Stanner <pstanner@redhat.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> |
||
|
Jinjie Ruan
|
9076bc476d |
kunit: Fix possible memory leak in kunit_filter_suites()
If both filter_glob and filters are not NULL, and kunit_parse_glob_filter()
succeed, but kcalloc parsed_filters fails, the suite_glob and test_glob of
parsed kzalloc in kunit_parse_glob_filter() will be leaked.
As Rae suggested, assign -ENOMEM to *err to correctly free copy and goto
free_parsed_glob to free the suite/test_glob of parsed.
Fixes:
|
||
|
Jinjie Ruan
|
2b56a4b79b |
kunit: Fix possible null-ptr-deref in kunit_parse_glob_filter()
Inject fault while probing kunit-example-test.ko, if kzalloc fails
in kunit_parse_glob_filter(), strcpy() or strncpy() to NULL will
cause below null-ptr-deref bug. So check NULL for kzalloc() and
return int instead of void for kunit_parse_glob_filter().
Unable to handle kernel paging request at virtual address dfff800000000000
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
Mem abort info:
ESR = 0x0000000096000005
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x05: level 1 translation fault
Data abort info:
ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
CM = 0, WnR = 0, TnD = 0, TagAccess = 0
GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[dfff800000000000] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in: kunit_example_test cfg80211 rfkill 8021q garp mrp stp llc ipv6 [last unloaded: kunit_example_test]
CPU: 4 PID: 6047 Comm: modprobe Tainted: G W N 6.5.0-next-20230829+ #141
Hardware name: linux,dummy-virt (DT)
pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : strncpy+0x58/0xc0
lr : kunit_filter_suites+0x15c/0xa84
sp : ffff800082a17420
x29: ffff800082a17420 x28: 0000000000000000 x27: 0000000000000004
x26: 0000000000000000 x25: ffffa847e40a5320 x24: 0000000000000001
x23: 0000000000000000 x22: 0000000000000001 x21: dfff800000000000
x20: 000000000000002a x19: 0000000000000000 x18: 00000000750b3b54
x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000000 x13: 34393178302f3039 x12: ffff7508fcea4ec1
x11: 1ffff508fcea4ec0 x10: ffff7508fcea4ec0 x9 : dfff800000000000
x8 : ffff6051b1a7f86a x7 : ffff800082a17270 x6 : 0000000000000002
x5 : 0000000000000098 x4 : ffff028d9817b250 x3 : 0000000000000000
x2 : 0000000000000000 x1 : ffffa847e40a5320 x0 : 0000000000000000
Call trace:
strncpy+0x58/0xc0
kunit_filter_suites+0x15c/0xa84
kunit_module_notify+0x1b0/0x3ac
blocking_notifier_call_chain+0xc4/0x128
do_init_module+0x250/0x594
load_module+0x37b0/0x44b4
init_module_from_file+0xd4/0x128
idempotent_init_module+0x2c8/0x524
__arm64_sys_finit_module+0xac/0x100
invoke_syscall+0x6c/0x258
el0_svc_common.constprop.0+0x160/0x22c
do_el0_svc+0x44/0x5c
el0_svc+0x38/0x78
el0t_64_sync_handler+0x13c/0x158
el0t_64_sync+0x190/0x194
Code: 5400028a d343fe63 12000a62 39400034 (38f56863)
---[ end trace 0000000000000000 ]---
Kernel panic - not syncing: Oops: Fatal exception
SMP: stopping secondary CPUs
Kernel Offset: 0x284761400000 from 0xffff800080000000
PHYS_OFFSET: 0xfffffd7380000000
CPU features: 0x88000203,3c020000,1000421b
Memory Limit: none
Rebooting in 1 seconds..
Fixes:
|
||
|
Jinjie Ruan
|
4b00920da1 |
kunit: Fix the wrong err path and add goto labels in kunit_filter_suites()
Take the last kfree(parsed_filters) and add it to be the first. Take the first kfree(copy) and add it to be the last. The Best practice is to return these errors reversely. And as David suggested, add several labels which target only the things which actually have been allocated so far. Fixes: |
||
|
Jinjie Ruan
|
2810c1e998 |
kunit: Fix wild-memory-access bug in kunit_free_suite_set()
Inject fault while probing kunit-example-test.ko, if kstrdup()
fails in mod_sysfs_setup() in load_module(), the mod->state will
switch from MODULE_STATE_COMING to MODULE_STATE_GOING instead of
from MODULE_STATE_LIVE to MODULE_STATE_GOING, so only
kunit_module_exit() will be called without kunit_module_init(), and
the mod->kunit_suites is no set correctly and the free in
kunit_free_suite_set() will cause below wild-memory-access bug.
The mod->state state machine when load_module() succeeds:
MODULE_STATE_UNFORMED ---> MODULE_STATE_COMING ---> MODULE_STATE_LIVE
^ |
| | delete_module
+---------------- MODULE_STATE_GOING <---------+
The mod->state state machine when load_module() fails at
mod_sysfs_setup():
MODULE_STATE_UNFORMED ---> MODULE_STATE_COMING ---> MODULE_STATE_GOING
^ |
| |
+-----------------------------------------------+
Call kunit_module_init() at MODULE_STATE_COMING state to fix the issue
because MODULE_STATE_LIVE is transformed from it.
Unable to handle kernel paging request at virtual address ffffff341e942a88
KASAN: maybe wild-memory-access in range [0x0003f9a0f4a15440-0x0003f9a0f4a15447]
Mem abort info:
ESR = 0x0000000096000004
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x04: level 0 translation fault
Data abort info:
ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
CM = 0, WnR = 0, TnD = 0, TagAccess = 0
GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000441ea000
[ffffff341e942a88] pgd=0000000000000000, p4d=0000000000000000
Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
Modules linked in: kunit_example_test(-) cfg80211 rfkill 8021q garp mrp stp llc ipv6 [last unloaded: kunit_example_test]
CPU: 3 PID: 2035 Comm: modprobe Tainted: G W N 6.5.0-next-20230828+ #136
Hardware name: linux,dummy-virt (DT)
pstate: a0000005 (NzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : kfree+0x2c/0x70
lr : kunit_free_suite_set+0xcc/0x13c
sp : ffff8000829b75b0
x29: ffff8000829b75b0 x28: ffff8000829b7b90 x27: 0000000000000000
x26: dfff800000000000 x25: ffffcd07c82a7280 x24: ffffcd07a50ab300
x23: ffffcd07a50ab2e8 x22: 1ffff00010536ec0 x21: dfff800000000000
x20: ffffcd07a50ab2f0 x19: ffffcd07a50ab2f0 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000 x15: ffffcd07c24b6764
x14: ffffcd07c24b63c0 x13: ffffcd07c4cebb94 x12: ffff700010536ec7
x11: 1ffff00010536ec6 x10: ffff700010536ec6 x9 : dfff800000000000
x8 : 00008fffefac913a x7 : 0000000041b58ab3 x6 : 0000000000000000
x5 : 1ffff00010536ec5 x4 : ffff8000829b7628 x3 : dfff800000000000
x2 : ffffff341e942a80 x1 : ffffcd07a50aa000 x0 : fffffc0000000000
Call trace:
kfree+0x2c/0x70
kunit_free_suite_set+0xcc/0x13c
kunit_module_notify+0xd8/0x360
blocking_notifier_call_chain+0xc4/0x128
load_module+0x382c/0x44a4
init_module_from_file+0xd4/0x128
idempotent_init_module+0x2c8/0x524
__arm64_sys_finit_module+0xac/0x100
invoke_syscall+0x6c/0x258
el0_svc_common.constprop.0+0x160/0x22c
do_el0_svc+0x44/0x5c
el0_svc+0x38/0x78
el0t_64_sync_handler+0x13c/0x158
el0t_64_sync+0x190/0x194
Code: aa0003e1 b25657e0 d34cfc42 8b021802 (f9400440)
---[ end trace 0000000000000000 ]---
Kernel panic - not syncing: Oops: Fatal exception
SMP: stopping secondary CPUs
Kernel Offset: 0x4d0742200000 from 0xffff800080000000
PHYS_OFFSET: 0xffffee43c0000000
CPU features: 0x88000203,3c020000,1000421b
Memory Limit: none
Rebooting in 1 seconds..
Fixes:
|
||
|
Linus Torvalds
|
3c31041e37 |
printk changes for 6.6
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEESH4wyp42V4tXvYsjUqAMR0iAlPIFAmT1pbAACgkQUqAMR0iA lPLoxBAAl18gKo6C8zIBNBoYNl7FxvChrJORjK7RQONs5RYKt8drHjSrJGazhjiV TIdbZt9juqs+UT/f6DnkJznrqQ0W70fQsgUpw+q7n7+cnkIoXAiAs+plexdQXigB 6nx67b2oub41jTwzn/uV7R/eTwq2VnoZqudS/o9iAI/Ia9JzkqmGx08hQedvOoqX 2SWs140iY/zXsFUyEfe8UTXwJUnC/n9pwtpe5sLpmtyupGc/KumUimTQ+LFJbV9o n8QhcQn10CE93M5fH/R2JXjZO7wuSmCHt/V8oSnoOwdCBBe7Tc6aBx5wUwc4XCuC 450h5hlYBKq97lA1PnWGC01uAkeDTRw8963LVRRqWvohoFuHXR0cisF9FTM9LXfs bg90XjzYAK7Ns9fJ0dZHOSbUtRaa06hiExUnO3ctyv2G6h8qKfv86LCuP0CMFmQU rflfk1dPiMW20HT3ZJNtMCy3Vu6kVQSdSaGKTnwzTcUWop5tCQxhmWYBXH6q/1LH aD7xT1xJnBGqLUqq5C8twoOea+w47x/vtjTLi7mJarP5Wfh8xv6axdkwE8N4NrYp cc2RR83a1BZ7At3YkAjfjHmhaZ97gSSe6+Yqk9UzvUEQY/WILEGnb0DKO1jCSB34 D2NPh1MHF5MFQjazdt/dSyMJVxDlTeY/S5wqfLLhNZts48LJ8n0= =D7ZU -----END PGP SIGNATURE----- Merge tag 'printk-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux Pull printk updates from Petr Mladek: - Do not try to get the console lock when it is not need or useful in panic() - Replace the global console_suspended state by a per-console flag - Export symbols needed for dumping the raw printk buffer in panic() - Fix documentation of printf formats for integer types - Moved Sergey Senozhatsky to the reviewer role - Misc cleanups * tag 'printk-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux: printk: export symbols for debug modules lib: test_scanf: Add explicit type cast to result initialization in test_number_prefix() printk: ringbuffer: Fix truncating buffer size min_t cast printk: Rename abandon_console_lock_in_panic() to other_cpu_in_panic() printk: Add per-console suspended state printk: Consolidate console deferred printing printk: Do not take console lock for console_flush_on_panic() printk: Keep non-panic-CPUs out of console lock printk: Reduce console_unblank() usage in unsafe scenarios kdb: Do not assume write() callback available docs: printk-formats: Treat char as always unsigned docs: printk-formats: Fix hex printing of signed values MAINTAINERS: adjust printk/vsprintf entries |
||
|
Linus Torvalds
|
e987af4546 |
percpu: changes for v6.6
percpu * A couple cleanups by Baoquan He and Bibo Mao. The only behavior change is to start printing messages if we're under the warn limit for failed atomic allocations. percpu_counter * Shakeel introduced percpu counters into mm_struct which caused percpu allocations be on the hot path [1]. Originally I spent some time trying to improve the percpu allocator, but instead preferred what Mateusz Guzik proposed grouping at the allocation site, percpu_counter_init_many(). This allows a single percpu allocation to be shared by the counters. I like this approach because it creates a shared lifetime by the allocations. Additionally, I believe many inits have higher level synchronization requirements, like percpu_counter does against HOTPLUG_CPU. Therefore we can group these optimizations together. [1] https://lore.kernel.org/linux-mm/20221024052841.3291983-1-shakeelb@google.com/ -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE3hZPHJdcVwe+yTTtiDc0yuoFPR0FAmTv2IUACgkQiDc0yuoF PR0+gg//U430Y9jRSKQtbh3dEPaAeWGcTfSTnVHbQGfBj3A4ePJyWl/Tgzri31AC rzr8SRs0yX8b82TbECWsV67i/GrntLJyz4yQ52S/RRqVwnQqSn/wicEdCY00lJBt Tye8zApOnYBouaYqIOxm/M7ofvKzJ3gWOVeF/zBwM6hwvNaXXtY5r86fSDxoEbhY HOFnCDmg5Spf0U50j1G7nV5KfAb7BNA3/HFyzfzH+w+OWi4IGbThsfrg1qvjyFot KlEK/kF8Af2xj2A2se4XFsLc2D/Tj+29juYVQqIPBJzVPrZ2uerKSszK5Zcr+Use kMiG7tRWKE+2vkOM1RQ5Y5NCVEBhlXlienz1gf/C7247SEGs6OIyqvyDAgPTRx6p oR2/vx9hMtaSMf4aHWd+fYS5gNZ05iMvOIbRZnI1wZkQglQVkJvXhzuLaJ+dIGSP ypv6XOepik7vDjZ3p3xJXd0TAn4NSkn3jWRetrymdtMFanF99qw1VqjmkLecSil0 Gr0UhRL1oiMde6niVJrOpdOGLwt/M4N99Y5rksw6NCnktRJ99coFGj7LglZGMsu+ YkOyjD8MVJXTkBtBNGeqHTKe6nyVkHFq9ad5EmWjPkefP5JziH8i18k7JlF1dLA5 c8peq3ES659D5f0mU2jilD9PsCsBfSn6Of4ruMZa2Zr1XDD8snI= =vcA1 -----END PGP SIGNATURE----- Merge tag 'percpu-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu Pull percpu updates from Dennis Zhou: "One bigger change to percpu_counter's api allowing for init and destroy of multiple counters via percpu_counter_init_many() and percpu_counter_destroy_many(). This is used to help begin remediating a performance regression with percpu rss stats. Additionally, it seems larger core count machines are feeling the burden of the single threaded allocation of percpu. Mateusz is thinking about it and I will spend some time on it too. percpu: - A couple cleanups by Baoquan He and Bibo Mao. The only behavior change is to start printing messages if we're under the warn limit for failed atomic allocations. percpu_counter: - Shakeel introduced percpu counters into mm_struct which caused percpu allocations be on the hot path [1]. Originally I spent some time trying to improve the percpu allocator, but instead preferred what Mateusz Guzik proposed grouping at the allocation site, percpu_counter_init_many(). This allows a single percpu allocation to be shared by the counters. I like this approach because it creates a shared lifetime by the allocations. Additionally, I believe many inits have higher level synchronization requirements, like percpu_counter does against HOTPLUG_CPU. Therefore we can group these optimizations together" Link: https://lore.kernel.org/linux-mm/20221024052841.3291983-1-shakeelb@google.com/ [1] * tag 'percpu-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu: kernel/fork: group allocation/free of per-cpu counters for mm struct pcpcntr: add group allocation/free mm/percpu.c: print error message too if atomic alloc failed mm/percpu.c: optimize the code in pcpu_setup_first_chunk() a little bit mm/percpu.c: remove redundant check mm/percpu: Remove some local variables in pcpu_populate_pte |
||
|
Linus Torvalds
|
1c9f8dff62 |
Char/Misc driver changes for 6.6-rc1
Here is the big set of char/misc and other small driver subsystem changes for 6.6-rc1. Stuff all over the place here, lots of driver updates and changes and new additions. Short summary is: - new IIO drivers and updates - Interconnect driver updates - fpga driver updates and additions - fsi driver updates - mei driver updates - coresight driver updates - nvmem driver updates - counter driver updates - lots of smaller misc and char driver updates and additions All of these have been in linux-next for a long time with no reported problems. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZPH64g8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ynr2QCfd3RKeR+WnGzyEOFhksl30UJJhiIAoNZtYT5+ t9KG0iMDXRuTsOqeEQbd =tVnk -----END PGP SIGNATURE----- Merge tag 'char-misc-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the big set of char/misc and other small driver subsystem changes for 6.6-rc1. Stuff all over the place here, lots of driver updates and changes and new additions. Short summary is: - new IIO drivers and updates - Interconnect driver updates - fpga driver updates and additions - fsi driver updates - mei driver updates - coresight driver updates - nvmem driver updates - counter driver updates - lots of smaller misc and char driver updates and additions All of these have been in linux-next for a long time with no reported problems" * tag 'char-misc-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (267 commits) nvmem: core: Notify when a new layout is registered nvmem: core: Do not open-code existing functions nvmem: core: Return NULL when no nvmem layout is found nvmem: core: Create all cells before adding the nvmem device nvmem: u-boot-env:: Replace zero-length array with DECLARE_FLEX_ARRAY() helper nvmem: sec-qfprom: Add Qualcomm secure QFPROM support dt-bindings: nvmem: sec-qfprom: Add bindings for secure qfprom dt-bindings: nvmem: Add compatible for QCM2290 nvmem: Kconfig: Fix typo "drive" -> "driver" nvmem: Explicitly include correct DT includes nvmem: add new NXP QorIQ eFuse driver dt-bindings: nvmem: Add t1023-sfp efuse support dt-bindings: nvmem: qfprom: Add compatible for MSM8226 nvmem: uniphier: Use devm_platform_get_and_ioremap_resource() nvmem: qfprom: do some cleanup nvmem: stm32-romem: Use devm_platform_get_and_ioremap_resource() nvmem: rockchip-efuse: Use devm_platform_get_and_ioremap_resource() nvmem: meson-mx-efuse: Convert to devm_platform_ioremap_resource() nvmem: lpc18xx_otp: Convert to devm_platform_ioremap_resource() nvmem: brcm_nvram: Use devm_platform_get_and_ioremap_resource() ... |
||
|
Linus Torvalds
|
28a4f91f5f |
Driver core changes for 6.6-rc1
Here is a small set of driver core updates and additions for 6.6-rc1. Included in here are: - stable kernel documentation updates - class structure const work from Ivan on various subsystems - kernfs tweaks - driver core tests! - kobject sanity cleanups - kobject structure reordering to save space - driver core error code handling fixups - other minor driver core cleanups All of these have been in linux-next for a while with no reported problems. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZPH77Q8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ylZMACePk8SitfaJc6FfFf5I7YK7Nq0V8MAn0nUjgsR i8NcNpu/Yv4HGrDgTdh/ =PJbk -----END PGP SIGNATURE----- Merge tag 'driver-core-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is a small set of driver core updates and additions for 6.6-rc1. Included in here are: - stable kernel documentation updates - class structure const work from Ivan on various subsystems - kernfs tweaks - driver core tests! - kobject sanity cleanups - kobject structure reordering to save space - driver core error code handling fixups - other minor driver core cleanups All of these have been in linux-next for a while with no reported problems" * tag 'driver-core-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (32 commits) driver core: Call in reversed order in device_platform_notify_remove() driver core: Return proper error code when dev_set_name() fails kobject: Remove redundant checks for whether ktype is NULL kobject: Add sanity check for kset->kobj.ktype in kset_register() drivers: base: test: Add missing MODULE_* macros to root device tests drivers: base: test: Add missing MODULE_* macros for platform devices tests drivers: base: Free devm resources when unregistering a device drivers: base: Add basic devm tests for platform devices drivers: base: Add basic devm tests for root devices kernfs: fix missing kernfs_iattr_rwsem locking docs: stable-kernel-rules: mention that regressions must be prevented docs: stable-kernel-rules: fine-tune various details docs: stable-kernel-rules: make the examples for option 1 a proper list docs: stable-kernel-rules: move text around to improve flow docs: stable-kernel-rules: improve structure by changing headlines base/node: Remove duplicated include kernfs: attach uuid for every kernfs and report it in fsid kernfs: add stub helper for kernfs_generic_poll() x86/resctrl: make pseudo_lock_class a static const structure x86/MSR: make msr_class a static const structure ... |
||
|
Linus Torvalds
|
e0152e7481 |
RISC-V Patches for the 6.6 Merge Window, Part 1
* Support for the new "riscv,isa-extensions" and "riscv,isa-base" device tree interfaces for probing extensions. * Support for userspace access to the performance counters. * Support for more instructions in kprobes. * Crash kernels can be allocated above 4GiB. * Support for KCFI. * Support for ELFs in !MMU configurations. * ARCH_KMALLOC_MINALIGN has been reduced to 8. * mmap() defaults to sv48-sized addresses, with longer addresses hidden behind a hint (similar to Arm and Intel). * Also various fixes and cleanups. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAmTx96kTHHBhbG1lckBk YWJiZWx0LmNvbQAKCRAuExnzX7sYiVjRD/9DYVLlkQ/OEDJjPaEcYCP49xgIVUUU lhs3XbSs2VNHBaiG114f6Q0AaT/uNi+uqSej3CeTmEot2kZkBk/f2yu+UNIriPZ9 GQiZsdyXhu921C+5VFtiI47KDWOVZ+Jpy3M1ll61IWt3yPSQHr1xOP0AOiyHHqe3 cmqpNnzjajlfVDoXPc2mGGzUJt/7ar4thcwnMNi98raXR5Qh7SP6rrHjoQhE1oFk LMP3CHqEAcHE2tE4CxZVpc6HOQ5m0LpQIOK7ypufGMyoIYESm5dt/JOT4MlhTtDw 6JzyVKtiM7lartUnUaW3ZoX4trQYT5gbXxWrJ2gCnUGy3VulikoXr1Rpz0qfdeOR XN8OLkVAqHfTGFI7oKk24f9Adw96R5NPZcdCay90h4J/kMfCiC7ZyUUI1XIa5iy1 np5pZCkf8HNcdywML7qcFd5n2O0wchyFnRLFZo6kJP9Ls5cEi6kBx/1jSdTcNgx/ fUKXyoEcriGoQiiwn29+4RZnU69gJV3zqQNLPpuwDQ5F/Q1zHTlrr+dqzezKkzcO dRTV2d2Q4A5vIDXPptzNNLlRQdrc8qxPJ1lxQVkPIU4/mtqczmZBwlyY2u9zwPyS sehJgJZnoAf+jm71NgQAKLck4MUBsMnMogOWunhXkVRCoZlbbkUWX4ECZYwPKsVk W7zVPmLvSM0l5g== =/tXb -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-6.6-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Palmer Dabbelt: - Support for the new "riscv,isa-extensions" and "riscv,isa-base" device tree interfaces for probing extensions - Support for userspace access to the performance counters - Support for more instructions in kprobes - Crash kernels can be allocated above 4GiB - Support for KCFI - Support for ELFs in !MMU configurations - ARCH_KMALLOC_MINALIGN has been reduced to 8 - mmap() defaults to sv48-sized addresses, with longer addresses hidden behind a hint (similar to Arm and Intel) - Also various fixes and cleanups * tag 'riscv-for-linus-6.6-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (51 commits) lib/Kconfig.debug: Restrict DEBUG_INFO_SPLIT for RISC-V riscv: support PREEMPT_DYNAMIC with static keys riscv: Move create_tmp_mapping() to init sections riscv: Mark KASAN tmp* page tables variables as static riscv: mm: use bitmap_zero() API riscv: enable DEBUG_FORCE_FUNCTION_ALIGN_64B riscv: remove redundant mv instructions RISC-V: mm: Document mmap changes RISC-V: mm: Update pgtable comment documentation RISC-V: mm: Add tests for RISC-V mm RISC-V: mm: Restrict address space for sv39,sv48,sv57 riscv: enable DMA_BOUNCE_UNALIGNED_KMALLOC for !dma_coherent riscv: allow kmalloc() caches aligned to the smallest value riscv: support the elf-fdpic binfmt loader binfmt_elf_fdpic: support 64-bit systems riscv: Allow CONFIG_CFI_CLANG to be selected riscv/purgatory: Disable CFI riscv: Add CFI error handling riscv: Add ftrace_stub_graph riscv: Add types to indirectly called assembly functions ... |
||
|
David Gow
|
dce19a3fed |
kunit: test: Make filter strings in executor_test writable
KUnit's attribute filtering feature needs the filter strings passed in
to be writable, as it modifies them in-place during parsing. This works
for the filters passed on the kernel command line, but the string
literals used in the executor tests are at least theoretically read-only
(though they work on x86_64 for some reason). s390 wasn't fooled, and
crashed when these tests were run.
Use a 'char[]' instead, (and make an explicit variable for the current
filter in parse_filter_attr_test), which will store the string in a
writable segment.
Fixes:
|
||
|
Nathan Chancellor
|
89775a27ff
|
lib/Kconfig.debug: Restrict DEBUG_INFO_SPLIT for RISC-V
When building for ARCH=riscv using LLVM < 14, there is an error with CONFIG_DEBUG_INFO_SPLIT=y: error: A dwo section may not contain relocations This was worked around in LLVM 15 by disallowing '-gsplit-dwarf' with '-mrelax' (the default), so CONFIG_DEBUG_INFO_SPLIT is not selectable with newer versions of LLVM: $ clang --target=riscv64-linux-gnu -gsplit-dwarf -c -o /dev/null -x c /dev/null clang: error: -gsplit-dwarf is unsupported with RISC-V linker relaxation (-mrelax) GCC silently had a similar issue that was resolved with GCC 12.x. Restrict CONFIG_DEBUG_INFO_SPLIT for RISC-V when using LLVM or GCC < 12.x to avoid these known issues. Link: https://github.com/ClangBuiltLinux/linux/issues/1914 Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99090 Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/all/202308090204.9yZffBWo-lkp@intel.com/ Signed-off-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Fangrui Song <maskray@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Link: https://lore.kernel.org/r/20230816-riscv-debug_info_split-v1-1-d1019d6ccc11@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> |
||
|
Jisheng Zhang
|
3ed8513cae
|
riscv: enable DEBUG_FORCE_FUNCTION_ALIGN_64B
Allow to force all function address 64B aligned as it is possible for
other architectures. This may be useful when verify if performance
bump is caused by function alignment changes.
Before commit
|
||
|
Linus Torvalds
|
f8fd5c2483 |
This pull request is full of clk driver changes. In fact, there aren't any
changes to the clk framework this time around. That's probably because everyone
was on vacation (yours truly included). We did lose a couple clk drivers this
time around because nobody was using those devices. That skews the diffstat a
bit, but either way, nothing looks out of the ordinary here. The usual suspects
are chugging along adding support for more SoCs and fixing bugs.
If I had to choose, I'd say the theme for the past few months has been
"polish". There's quite a few patches that migrate to
devm_platform_ioremap_resource() in here. And there's more than a handful of
patches that move the NR_CLKS define from the DT binding header to the driver.
There's even patches that migrate drivers to use clk_parent_data and clk_hw to
describe clk tree topology. It seems that the spring (summer?) cleaning bug got
some folks, or the semiconductor shortage finally hit the software side.
New Drivers:
- StarFive JH7110 SoC clock drivers
- Qualcomm IPQ5018 Global Clock Controller driver
- Versa3 clk generator to support 48KHz playback/record with audio codec on
RZ/G2L SMARC EVK
Removed Drivers:
- Remove non-OF mmp clk drivers
- Remove OXNAS clk driver
Updates:
- Add __counted_by to struct clk_hw_onecell_data and struct spmi_pmic_div_clk_cc
- Move defines for numbers of clks (NR_CLKS) from DT headers to drivers
- Introduce kstrdup_and_replace() and use it
- Add PLL rates for Rockchip rk3568
- Add the display clock tree for Rockchip rv1126
- Add Audio Clock Generator (ADG) clocks on Renesas R-Car Gen3 and RZ/G2 SoCs
- Convert sun9i-mmc clock to use devm_platform_get_and_ioremap_resource()
- Fix function name in a comment in ccu_mmc_timing.c
- Parameter name correction for ccu_nkm_round_rate()
- Implement CLK_SET_RATE_PARENT for Allwinner NKM clocks, i.e. consider alternative
parent rates when determining clock rates
- Set CLK_SET_RATE_PARENT for Allwinner A64 pll-mipi
- Support finding closest (as opposed to closest but not higher) clock rate
for NM, NKM, mux and div type clocks, as use it for Allwinner A64 pll-video0
- Prefer current parent rate if able to generate ideal clock rate for Allwinner NKM clocks
- Clean up Qualcomm SMD RPM driver, with interconnect bus clocks moved out to
the interconnect drivers
- Fix various PM runtime bugs across many Qualcomm clk drivers
- Migrate Qualcomm MDM9615 is to parent_hw and parent_data
- Add network related resets on Qualcomm IPQ4019
- Add a couple missing USB related clocks to Qualcomm IPQ9574
- Add missing gpll0_sleep_clk_src to Qualcomm MSM8917 global clock controller
- In the Qualcomm QDU1000 global clock controller, GDSCs, clkrefs, and GPLL1 are
added, while PCIe pipe clock, SDCC rcg ops are corrected
- Add missing GDSCs to and correct GDSCs for the SC8280XP global clock controller driver
- Support retention for the Qualcomm SC8280XP display clock controller GDSCs.
- Qualcommm's SDCC apps_clk_src is marked with CLK_OPS_PARENT_ENABLE to fix
issues with missing parent clocks across sc7180, sm7150, sm6350 and sm8250,
while sm8450 is corrected to use floor ops
- Correct Qualcomm SM6350 GPU clock controller's clock supplies
- Drop unwanted clocks from the Qualcomm IPQ5332 GCC driver
- Add missing OXILICX GDSC to Qualcomm MSM8226 GCC
- Change the delay in the Qualcomm reset controller to fsleep() for correctness
- Extend the Qualcomm SM83550 Video clock controller to support SC8280XP
- Add graphics clock support on Renesas RZ/G2M, RZ/G2N, RZ/G2E, and R-Car H3,
M3-W, and M3-N SoCs
- Add Clocked Serial Interface (CSI) clocks on Renesas RZ/V2M
- Add PWM (MTU3) clock and reset on Renesas RZ/G2UL and RZ/Five
- Add the PDM IPC clock for i.MX93
- Add 519.75MHz frequency support for i.MX9 PLL
- Simplify the .determine_rate() implementation for i.MX GPR mux
- Make the i.MX8QXP LPCG clock use devm_platform_ioremap_resource()
- Add the audio mux clock to i.MX8
- Fix the SPLL2 MULT range for PLLv4
- Update the SPLL2 type in i.MX8ULP
- Fix the SAI4 clock on i.MX8MP
- Add silicon revision print for i.MX25 on clocks init
- Drop the return value from __mx25_clocks_init()
- Fix the clock pauses on no-op set_rate for i.MX8M composite clock
- Drop restrictions for i.MX PLL14xx and fix its max prediv value
- Drop the 393216000 and 361267200 from i.MX PLL14xx rate table to allow
glitch free switching
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk subsystem updates from Stephen Boyd:
"This pull request is full of clk driver changes. In fact, there aren't
any changes to the clk framework this time around. That's probably
because everyone was on vacation (yours truly included). We did lose a
couple clk drivers this time around because nobody was using those
devices. That skews the diffstat a bit, but either way, nothing looks
out of the ordinary here. The usual suspects are chugging along adding
support for more SoCs and fixing bugs.
If I had to choose, I'd say the theme for the past few months has been
"polish". There's quite a few patches that migrate to
devm_platform_ioremap_resource() in here. And there's more than a
handful of patches that move the NR_CLKS define from the DT binding
header to the driver. There's even patches that migrate drivers to use
clk_parent_data and clk_hw to describe clk tree topology. It seems
that the spring (summer?) cleaning bug got some folks, or the
semiconductor shortage finally hit the software side.
New Drivers:
- StarFive JH7110 SoC clock drivers
- Qualcomm IPQ5018 Global Clock Controller driver
- Versa3 clk generator to support 48KHz playback/record with audio
codec on RZ/G2L SMARC EVK
Removed Drivers:
- Remove non-OF mmp clk drivers
- Remove OXNAS clk driver
Updates:
- Add __counted_by to struct clk_hw_onecell_data and struct
spmi_pmic_div_clk_cc
- Move defines for numbers of clks (NR_CLKS) from DT headers to
drivers
- Introduce kstrdup_and_replace() and use it
- Add PLL rates for Rockchip rk3568
- Add the display clock tree for Rockchip rv1126
- Add Audio Clock Generator (ADG) clocks on Renesas R-Car Gen3 and
RZ/G2 SoCs
- Convert sun9i-mmc clock to use
devm_platform_get_and_ioremap_resource()
- Fix function name in a comment in ccu_mmc_timing.c
- Parameter name correction for ccu_nkm_round_rate()
- Implement CLK_SET_RATE_PARENT for Allwinner NKM clocks, i.e.
consider alternative parent rates when determining clock rates
- Set CLK_SET_RATE_PARENT for Allwinner A64 pll-mipi
- Support finding closest (as opposed to closest but not higher)
clock rate for NM, NKM, mux and div type clocks, as use it for
Allwinner A64 pll-video0
- Prefer current parent rate if able to generate ideal clock rate for
Allwinner NKM clocks
- Clean up Qualcomm SMD RPM driver, with interconnect bus clocks
moved out to the interconnect drivers
- Fix various PM runtime bugs across many Qualcomm clk drivers
- Migrate Qualcomm MDM9615 is to parent_hw and parent_data
- Add network related resets on Qualcomm IPQ4019
- Add a couple missing USB related clocks to Qualcomm IPQ9574
- Add missing gpll0_sleep_clk_src to Qualcomm MSM8917 global clock
controller
- In the Qualcomm QDU1000 global clock controller, GDSCs, clkrefs,
and GPLL1 are added, while PCIe pipe clock, SDCC rcg ops are
corrected
- Add missing GDSCs to and correct GDSCs for the SC8280XP global
clock controller driver
- Support retention for the Qualcomm SC8280XP display clock
controller GDSCs.
- Qualcommm's SDCC apps_clk_src is marked with CLK_OPS_PARENT_ENABLE
to fix issues with missing parent clocks across sc7180, sm7150,
sm6350 and sm8250, while sm8450 is corrected to use floor ops
- Correct Qualcomm SM6350 GPU clock controller's clock supplies
- Drop unwanted clocks from the Qualcomm IPQ5332 GCC driver
- Add missing OXILICX GDSC to Qualcomm MSM8226 GCC
- Change the delay in the Qualcomm reset controller to fsleep() for
correctness
- Extend the Qualcomm SM83550 Video clock controller to support
SC8280XP
- Add graphics clock support on Renesas RZ/G2M, RZ/G2N, RZ/G2E, and
R-Car H3, M3-W, and M3-N SoCs
- Add Clocked Serial Interface (CSI) clocks on Renesas RZ/V2M
- Add PWM (MTU3) clock and reset on Renesas RZ/G2UL and RZ/Five
- Add the PDM IPC clock for i.MX93
- Add 519.75MHz frequency support for i.MX9 PLL
- Simplify the .determine_rate() implementation for i.MX GPR mux
- Make the i.MX8QXP LPCG clock use devm_platform_ioremap_resource()
- Add the audio mux clock to i.MX8
- Fix the SPLL2 MULT range for PLLv4
- Update the SPLL2 type in i.MX8ULP
- Fix the SAI4 clock on i.MX8MP
- Add silicon revision print for i.MX25 on clocks init
- Drop the return value from __mx25_clocks_init()
- Fix the clock pauses on no-op set_rate for i.MX8M composite clock
- Drop restrictions for i.MX PLL14xx and fix its max prediv value
- Drop the 393216000 and 361267200 from i.MX PLL14xx rate table to
allow glitch free switching"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (207 commits)
clk: qcom: Fix SM_GPUCC_8450 dependencies
clk: lmk04832: Support using PLL1_LD as SPI readback pin
clk: lmk04832: Don't disable vco clock on probe fail
clk: lmk04832: Set missing parent_names for output clocks
clk: mvebu: Convert to devm_platform_ioremap_resource()
clk: nuvoton: Convert to devm_platform_ioremap_resource()
clk: socfpga: agilex: Convert to devm_platform_ioremap_resource()
clk: ti: Use devm_platform_get_and_ioremap_resource()
clk: mediatek: Convert to devm_platform_ioremap_resource()
clk: hsdk-pll: Convert to devm_platform_ioremap_resource()
clk: gemini: Convert to devm_platform_ioremap_resource()
clk: fsl-sai: Convert to devm_platform_ioremap_resource()
clk: bm1880: Convert to devm_platform_ioremap_resource()
clk: axm5516: Convert to devm_platform_ioremap_resource()
clk: actions: Convert to devm_platform_ioremap_resource()
clk: cdce925: Remove redundant of_match_ptr()
clk: pxa910: Move number of clocks to driver source
clk: pxa1928: Move number of clocks to driver source
clk: pxa168: Move number of clocks to driver source
clk: mmp2: Move number of clocks to driver source
...
|
||
|
Linus Torvalds
|
ef2a0b7cdb |
Devicetree include cleanups for v6.6:
These are the remaining few clean-ups of DT related includes which didn't get applied to subsystem trees. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEktVUI4SxYhzZyEuo+vtdtY28YcMFAmTucUoACgkQ+vtdtY28 YcOYoQ//RwIPeWc74PHQbOb6eQR95eTHDcDE1MR9Fw8amqxFaomGlSMpbyVyP4ag 8p82c6qfJIZautyEikbKFO+iYjFMua0KuOTMVuDxHErQOl6ym4P4Uk3+1h5stVSj IdfK4CACtMKxKBOPAcyxJU6HKoWcUtMKsKV6OLdDh7M2Fy/G4RCjv4w1Xf3VAn59 VOa0KF7FhHU3dhIB/tGsj0t13+3e3kF5+l4+pdoMoZWhR4gac5FJRxiR5dMZG6jr VY8i9FZb7DW2VtY78FVVOaYDDVf4vNrc+0kqnCbWUaKACHPgNXC375LvS7jFGXvc HYVN3teqhFxNOyoSehn2bdBVwJxjQFgy2gTt2vRWTa/CaUDES90cue2R9GT2Sz0b eBc3DQtNeT5m8mrLkuEfZrJjKjaEy2Pr6FjNDhNcmkJak7dkMMgkG/Y/SpNmpZOe 2C3T6i4i6FUxni/2/rWHSVLnYBGfhPNdwWAZcQOi8rqtzp3tF46wVa345+Ev3VDG ECDndH8Qk3gtOmGyeTIvPc51yDP6Hpuh7+0jydtehkXHB+cUJtR+g0efIGf7BDgo sQpa1vRxkOolrCxyzKwcogEY7jjeccv/FM7BwaZQKXEibiKGkxeDuahdwbfvDuVq br16Uj9VzG8Jl6KK0gexV7kzZAAdw1y3JqPGUZf7hn4zmk099ow= =eLMf -----END PGP SIGNATURE----- Merge tag 'devicetree-header-cleanups-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree include cleanups from Rob Herring: "These are the remaining few clean-ups of DT related includes which didn't get applied to subsystem trees" * tag 'devicetree-header-cleanups-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: ipmi: Explicitly include correct DT includes tpm: Explicitly include correct DT includes lib/genalloc: Explicitly include correct DT includes parport: Explicitly include correct DT includes sbus: Explicitly include correct DT includes mux: Explicitly include correct DT includes macintosh: Explicitly include correct DT includes hte: Explicitly include correct DT includes EDAC: Explicitly include correct DT includes clocksource: Explicitly include correct DT includes sparc: Explicitly include correct DT includes riscv: Explicitly include correct DT includes |
||
|
Linus Torvalds
|
4fb0dacb78 |
sound updates for 6.6-rc1
We've received a fairly wide range of changes at this time, including
for ALSA and ASoC core, but all of them are rather small changes.
Here are some highlights:
ALSA / ASoC Core:
- Fixes of inconsistent locking around control API helpers
- A few new control API functions and cleanups
- Workarounds for potential UAFs by delayed kobj releases
- Unified PCM copy ops with iov_iter
- Continued efforts for ASoC API cleanups
ASoC:
- An adaptor to allow use of IIO DACs and ADCs in ASoC which pulls in
some IIO changes
- Create a library function for intlog10() and use it in the NAU8825
driver
- Convert drivers to use the more modern maple tree register cache
- Lots of work on the SOF framework, AMD and Intel drivers, including a
lot of cleanup and new device support
- Standardization of the presentation of jacks from drivers
- Provision of some generic sound card DT properties
- Support for AMD Van Gogh, AMD machines with MAX98388 and NAU8821,
AWInic AW88261, Cirrus Logic CS35L36 and CS42L43, various Intel
platforms including AVS machines with ES8336 and RT5663, Mediatek
MT7986, NXP i.MX93, RealTek RT1017 and StarFive JH7110
Others:
- New test coverage including ASoC and topology tests in KUnit;
this also involves enabling UML builds of ALSA since that's the
default KUnit test environment which pulls in the addition of some
stubs to the driver
- More enhancement of pcmtest driver
- A few fixes / enhancements of MIDI 2.0 UMP core
- Using PCI definitions in allover HD-audio code
- Support for Cirrus CS35L56 and TI TAS2781 HD-audio sub-codecs
- CS35L41 HD-audio sub-codec improvements
- Continued emu10k1 improvements
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Merge tag 'sound-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"We've received a fairly wide range of changes at this time, including
for ALSA and ASoC core, but all of them are rather small changes.
Here are some highlights:
ALSA / ASoC Core:
- Fixes of inconsistent locking around control API helpers
- A few new control API functions and cleanups
- Workarounds for potential UAFs by delayed kobj releases
- Unified PCM copy ops with iov_iter
- Continued efforts for ASoC API cleanups
ASoC:
- An adaptor to allow use of IIO DACs and ADCs in ASoC which pulls in
some IIO changes
- Create a library function for intlog10() and use it in the NAU8825
driver
- Convert drivers to use the more modern maple tree register cache
- Lots of work on the SOF framework, AMD and Intel drivers, including
a lot of cleanup and new device support
- Standardization of the presentation of jacks from drivers
- Provision of some generic sound card DT properties
- Support for AMD Van Gogh, AMD machines with MAX98388 and NAU8821,
AWInic AW88261, Cirrus Logic CS35L36 and CS42L43, various Intel
platforms including AVS machines with ES8336 and RT5663, Mediatek
MT7986, NXP i.MX93, RealTek RT1017 and StarFive JH7110
Others:
- New test coverage including ASoC and topology tests in KUnit; this
also involves enabling UML builds of ALSA since that's the default
KUnit test environment which pulls in the addition of some stubs to
the driver
- More enhancement of pcmtest driver
- A few fixes / enhancements of MIDI 2.0 UMP core
- Using PCI definitions in allover HD-audio code
- Support for Cirrus CS35L56 and TI TAS2781 HD-audio sub-codecs
- CS35L41 HD-audio sub-codec improvements
- Continued emu10k1 improvements"
* tag 'sound-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (693 commits)
ALSA: pcm: Fix missing fixup call in compat hw_refine ioctl
ASoC: dwc: i2s: Fix unused functions
ALSA: usb-audio: Don't try to submit URBs after disconnection
ALSA: emu10k1: add separate documentation for E-MU cards
ALSA: emu10k1: more documentation updates
ALSA: emu10k1: de-duplicate audigy-mixer.rst vs. sb-live-mixer.rst
ALSA: ump: Fix -Wformat-truncation warnings
ALSA: hda: Add missing dependency on CONFIG_EFI for Cirrus/TI sub-codecs
ALSA: doc: Fix missing backquote in midi-2.0.rst
ALSA: hda/realtek: Add quirk for mute LEDs on HP ENVY x360 15-eu0xxx
ALSA: hda/tas2781: Switch back to use struct i2c_driver's .probe()
ASoC: soc-core.c: Do not error if a DAI link component is not found
ASoC: codecs: Fix error code in aw88261_i2c_probe()
ASoC: audio-graph-card.c: move audio_graph_parse_of()
ASoC: cs42l43: Use new-style PM runtime macros
ALSA: documentation: Add description for USB MIDI 2.0 gadget driver
ALSA: ump: Don't create unused substreams for static blocks
ALSA: ump: Fill group names for legacy rawmidi substreams
ALSA: usb-audio: Attach legacy rawmidi after probing all UMP EPs
ALSA: ac97: Fix possible error value of *rac97
...
|
||
|
Huacai Chen
|
9d1785590b |
Merge tag 'md-next-20230814-resend' into loongarch-next
LoongArch architecture changes for 6.5 (raid5/6 optimization) depend on the md changes to fix build and work, so merge them to create a base. |
||
|
Linus Torvalds
|
3d3dfeb3ae |
for-6.6/block-2023-08-28
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Merge tag 'for-6.6/block-2023-08-28' of git://git.kernel.dk/linux
Pull block updates from Jens Axboe:
"Pretty quiet round for this release. This contains:
- Add support for zoned storage to ublk (Andreas, Ming)
- Series improving performance for drivers that mark themselves as
needing a blocking context for issue (Bart)
- Cleanup the flush logic (Chengming)
- sed opal keyring support (Greg)
- Fixes and improvements to the integrity support (Jinyoung)
- Add some exports for bcachefs that we can hopefully delete again in
the future (Kent)
- deadline throttling fix (Zhiguo)
- Series allowing building the kernel without buffer_head support
(Christoph)
- Sanitize the bio page adding flow (Christoph)
- Write back cache fixes (Christoph)
- MD updates via Song:
- Fix perf regression for raid0 large sequential writes (Jan)
- Fix split bio iostat for raid0 (David)
- Various raid1 fixes (Heinz, Xueshi)
- raid6test build fixes (WANG)
- Deprecate bitmap file support (Christoph)
- Fix deadlock with md sync thread (Yu)
- Refactor md io accounting (Yu)
- Various non-urgent fixes (Li, Yu, Jack)
- Various fixes and cleanups (Arnd, Azeem, Chengming, Damien, Li,
Ming, Nitesh, Ruan, Tejun, Thomas, Xu)"
* tag 'for-6.6/block-2023-08-28' of git://git.kernel.dk/linux: (113 commits)
block: use strscpy() to instead of strncpy()
block: sed-opal: keyring support for SED keys
block: sed-opal: Implement IOC_OPAL_REVERT_LSP
block: sed-opal: Implement IOC_OPAL_DISCOVERY
blk-mq: prealloc tags when increase tagset nr_hw_queues
blk-mq: delete redundant tagset map update when fallback
blk-mq: fix tags leak when shrink nr_hw_queues
ublk: zoned: support REQ_OP_ZONE_RESET_ALL
md: raid0: account for split bio in iostat accounting
md/raid0: Fix performance regression for large sequential writes
md/raid0: Factor out helper for mapping and submitting a bio
md raid1: allow writebehind to work on any leg device set WriteMostly
md/raid1: hold the barrier until handle_read_error() finishes
md/raid1: free the r1bio before waiting for blocked rdev
md/raid1: call free_r1bio() before allow_barrier() in raid_end_bio_io()
blk-cgroup: Fix NULL deref caused by blkg_policy_data being installed before init
drivers/rnbd: restore sysfs interface to rnbd-client
md/raid5-cache: fix null-ptr-deref for r5l_flush_stripe_to_raid()
raid6: test: only check for Altivec if building on powerpc hosts
raid6: test: make sure all intermediate and artifact files are .gitignored
...
|
||
|
Linus Torvalds
|
d68b4b6f30 |
- An extensive rework of kexec and crash Kconfig from Eric DeVolder
("refactor Kconfig to consolidate KEXEC and CRASH options").
- kernel.h slimming work from Andy Shevchenko ("kernel.h: Split out a
couple of macros to args.h").
- gdb feature work from Kuan-Ying Lee ("Add GDB memory helper
commands").
- vsprintf inclusion rationalization from Andy Shevchenko
("lib/vsprintf: Rework header inclusions").
- Switch the handling of kdump from a udev scheme to in-kernel handling,
by Eric DeVolder ("crash: Kernel handling of CPU and memory hot
un/plug").
- Many singleton patches to various parts of the tree
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Merge tag 'mm-nonmm-stable-2023-08-28-22-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- An extensive rework of kexec and crash Kconfig from Eric DeVolder
("refactor Kconfig to consolidate KEXEC and CRASH options")
- kernel.h slimming work from Andy Shevchenko ("kernel.h: Split out a
couple of macros to args.h")
- gdb feature work from Kuan-Ying Lee ("Add GDB memory helper
commands")
- vsprintf inclusion rationalization from Andy Shevchenko
("lib/vsprintf: Rework header inclusions")
- Switch the handling of kdump from a udev scheme to in-kernel
handling, by Eric DeVolder ("crash: Kernel handling of CPU and memory
hot un/plug")
- Many singleton patches to various parts of the tree
* tag 'mm-nonmm-stable-2023-08-28-22-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (81 commits)
document while_each_thread(), change first_tid() to use for_each_thread()
drivers/char/mem.c: shrink character device's devlist[] array
x86/crash: optimize CPU changes
crash: change crash_prepare_elf64_headers() to for_each_possible_cpu()
crash: hotplug support for kexec_load()
x86/crash: add x86 crash hotplug support
crash: memory and CPU hotplug sysfs attributes
kexec: exclude elfcorehdr from the segment digest
crash: add generic infrastructure for crash hotplug support
crash: move a few code bits to setup support of crash hotplug
kstrtox: consistently use _tolower()
kill do_each_thread()
nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse
scripts/bloat-o-meter: count weak symbol sizes
treewide: drop CONFIG_EMBEDDED
lockdep: fix static memory detection even more
lib/vsprintf: declare no_hash_pointers in sprintf.h
lib/vsprintf: split out sprintf() and friends
kernel/fork: stop playing lockless games for exe_file replacement
adfs: delete unused "union adfs_dirtail" definition
...
|
||
|
Linus Torvalds
|
b96a3e9142 |
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
- Peter Xu has a series (mm/gup: Unify hugetlb, speed up thp") which
reduces the special-case code for handling hugetlb pages in GUP. It
also speeds up GUP handling of transparent hugepages.
- Peng Zhang provides some maple tree speedups ("Optimize the fast path
of mas_store()").
- Sergey Senozhatsky has improved te performance of zsmalloc during
compaction (zsmalloc: small compaction improvements").
- Domenico Cerasuolo has developed additional selftest code for zswap
("selftests: cgroup: add zswap test program").
- xu xin has doe some work on KSM's handling of zero pages. These
changes are mainly to enable the user to better understand the
effectiveness of KSM's treatment of zero pages ("ksm: support tracking
KSM-placed zero-pages").
- Jeff Xu has fixes the behaviour of memfd's
MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED sysctl ("mm/memfd: fix sysctl
MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED").
- David Howells has fixed an fscache optimization ("mm, netfs, fscache:
Stop read optimisation when folio removed from pagecache").
- Axel Rasmussen has given userfaultfd the ability to simulate memory
poisoning ("add UFFDIO_POISON to simulate memory poisoning with UFFD").
- Miaohe Lin has contributed some routine maintenance work on the
memory-failure code ("mm: memory-failure: remove unneeded PageHuge()
check").
- Peng Zhang has contributed some maintenance work on the maple tree
code ("Improve the validation for maple tree and some cleanup").
- Hugh Dickins has optimized the collapsing of shmem or file pages into
THPs ("mm: free retracted page table by RCU").
- Jiaqi Yan has a patch series which permits us to use the healthy
subpages within a hardware poisoned huge page for general purposes
("Improve hugetlbfs read on HWPOISON hugepages").
- Kemeng Shi has done some maintenance work on the pagetable-check code
("Remove unused parameters in page_table_check").
- More folioification work from Matthew Wilcox ("More filesystem folio
conversions for 6.6"), ("Followup folio conversions for zswap"). And
from ZhangPeng ("Convert several functions in page_io.c to use a
folio").
- page_ext cleanups from Kemeng Shi ("minor cleanups for page_ext").
- Baoquan He has converted some architectures to use the GENERIC_IOREMAP
ioremap()/iounmap() code ("mm: ioremap: Convert architectures to take
GENERIC_IOREMAP way").
- Anshuman Khandual has optimized arm64 tlb shootdown ("arm64: support
batched/deferred tlb shootdown during page reclamation/migration").
- Better maple tree lockdep checking from Liam Howlett ("More strict
maple tree lockdep"). Liam also developed some efficiency improvements
("Reduce preallocations for maple tree").
- Cleanup and optimization to the secondary IOMMU TLB invalidation, from
Alistair Popple ("Invalidate secondary IOMMU TLB on permission
upgrade").
- Ryan Roberts fixes some arm64 MM selftest issues ("selftests/mm fixes
for arm64").
- Kemeng Shi provides some maintenance work on the compaction code ("Two
minor cleanups for compaction").
- Some reduction in mmap_lock pressure from Matthew Wilcox ("Handle most
file-backed faults under the VMA lock").
- Aneesh Kumar contributes code to use the vmemmap optimization for DAX
on ppc64, under some circumstances ("Add support for DAX vmemmap
optimization for ppc64").
- page-ext cleanups from Kemeng Shi ("add page_ext_data to get client
data in page_ext"), ("minor cleanups to page_ext header").
- Some zswap cleanups from Johannes Weiner ("mm: zswap: three
cleanups").
- kmsan cleanups from ZhangPeng ("minor cleanups for kmsan").
- VMA handling cleanups from Kefeng Wang ("mm: convert to
vma_is_initial_heap/stack()").
- DAMON feature work from SeongJae Park ("mm/damon/sysfs-schemes:
implement DAMOS tried total bytes file"), ("Extend DAMOS filters for
address ranges and DAMON monitoring targets").
- Compaction work from Kemeng Shi ("Fixes and cleanups to compaction").
- Liam Howlett has improved the maple tree node replacement code
("maple_tree: Change replacement strategy").
- ZhangPeng has a general code cleanup - use the K() macro more widely
("cleanup with helper macro K()").
- Aneesh Kumar brings memmap-on-memory to ppc64 ("Add support for memmap
on memory feature on ppc64").
- pagealloc cleanups from Kemeng Shi ("Two minor cleanups for pcp list
in page_alloc"), ("Two minor cleanups for get pageblock migratetype").
- Vishal Moola introduces a memory descriptor for page table tracking,
"struct ptdesc" ("Split ptdesc from struct page").
- memfd selftest maintenance work from Aleksa Sarai ("memfd: cleanups
for vm.memfd_noexec").
- MM include file rationalization from Hugh Dickins ("arch: include
asm/cacheflush.h in asm/hugetlb.h").
- THP debug output fixes from Hugh Dickins ("mm,thp: fix sloppy text
output").
- kmemleak improvements from Xiaolei Wang ("mm/kmemleak: use
object_cache instead of kmemleak_initialized").
- More folio-related cleanups from Matthew Wilcox ("Remove _folio_dtor
and _folio_order").
- A VMA locking scalability improvement from Suren Baghdasaryan
("Per-VMA lock support for swap and userfaults").
- pagetable handling cleanups from Matthew Wilcox ("New page table range
API").
- A batch of swap/thp cleanups from David Hildenbrand ("mm/swap: stop
using page->private on tail pages for THP_SWAP + cleanups").
- Cleanups and speedups to the hugetlb fault handling from Matthew
Wilcox ("Change calling convention for ->huge_fault").
- Matthew Wilcox has also done some maintenance work on the MM subsystem
documentation ("Improve mm documentation").
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Merge tag 'mm-stable-2023-08-28-18-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in
add_to_avail_list")
- Peter Xu has a series (mm/gup: Unify hugetlb, speed up thp") which
reduces the special-case code for handling hugetlb pages in GUP. It
also speeds up GUP handling of transparent hugepages.
- Peng Zhang provides some maple tree speedups ("Optimize the fast path
of mas_store()").
- Sergey Senozhatsky has improved te performance of zsmalloc during
compaction (zsmalloc: small compaction improvements").
- Domenico Cerasuolo has developed additional selftest code for zswap
("selftests: cgroup: add zswap test program").
- xu xin has doe some work on KSM's handling of zero pages. These
changes are mainly to enable the user to better understand the
effectiveness of KSM's treatment of zero pages ("ksm: support
tracking KSM-placed zero-pages").
- Jeff Xu has fixes the behaviour of memfd's
MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED sysctl ("mm/memfd: fix sysctl
MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED").
- David Howells has fixed an fscache optimization ("mm, netfs, fscache:
Stop read optimisation when folio removed from pagecache").
- Axel Rasmussen has given userfaultfd the ability to simulate memory
poisoning ("add UFFDIO_POISON to simulate memory poisoning with
UFFD").
- Miaohe Lin has contributed some routine maintenance work on the
memory-failure code ("mm: memory-failure: remove unneeded PageHuge()
check").
- Peng Zhang has contributed some maintenance work on the maple tree
code ("Improve the validation for maple tree and some cleanup").
- Hugh Dickins has optimized the collapsing of shmem or file pages into
THPs ("mm: free retracted page table by RCU").
- Jiaqi Yan has a patch series which permits us to use the healthy
subpages within a hardware poisoned huge page for general purposes
("Improve hugetlbfs read on HWPOISON hugepages").
- Kemeng Shi has done some maintenance work on the pagetable-check code
("Remove unused parameters in page_table_check").
- More folioification work from Matthew Wilcox ("More filesystem folio
conversions for 6.6"), ("Followup folio conversions for zswap"). And
from ZhangPeng ("Convert several functions in page_io.c to use a
folio").
- page_ext cleanups from Kemeng Shi ("minor cleanups for page_ext").
- Baoquan He has converted some architectures to use the
GENERIC_IOREMAP ioremap()/iounmap() code ("mm: ioremap: Convert
architectures to take GENERIC_IOREMAP way").
- Anshuman Khandual has optimized arm64 tlb shootdown ("arm64: support
batched/deferred tlb shootdown during page reclamation/migration").
- Better maple tree lockdep checking from Liam Howlett ("More strict
maple tree lockdep"). Liam also developed some efficiency
improvements ("Reduce preallocations for maple tree").
- Cleanup and optimization to the secondary IOMMU TLB invalidation,
from Alistair Popple ("Invalidate secondary IOMMU TLB on permission
upgrade").
- Ryan Roberts fixes some arm64 MM selftest issues ("selftests/mm fixes
for arm64").
- Kemeng Shi provides some maintenance work on the compaction code
("Two minor cleanups for compaction").
- Some reduction in mmap_lock pressure from Matthew Wilcox ("Handle
most file-backed faults under the VMA lock").
- Aneesh Kumar contributes code to use the vmemmap optimization for DAX
on ppc64, under some circumstances ("Add support for DAX vmemmap
optimization for ppc64").
- page-ext cleanups from Kemeng Shi ("add page_ext_data to get client
data in page_ext"), ("minor cleanups to page_ext header").
- Some zswap cleanups from Johannes Weiner ("mm: zswap: three
cleanups").
- kmsan cleanups from ZhangPeng ("minor cleanups for kmsan").
- VMA handling cleanups from Kefeng Wang ("mm: convert to
vma_is_initial_heap/stack()").
- DAMON feature work from SeongJae Park ("mm/damon/sysfs-schemes:
implement DAMOS tried total bytes file"), ("Extend DAMOS filters for
address ranges and DAMON monitoring targets").
- Compaction work from Kemeng Shi ("Fixes and cleanups to compaction").
- Liam Howlett has improved the maple tree node replacement code
("maple_tree: Change replacement strategy").
- ZhangPeng has a general code cleanup - use the K() macro more widely
("cleanup with helper macro K()").
- Aneesh Kumar brings memmap-on-memory to ppc64 ("Add support for
memmap on memory feature on ppc64").
- pagealloc cleanups from Kemeng Shi ("Two minor cleanups for pcp list
in page_alloc"), ("Two minor cleanups for get pageblock
migratetype").
- Vishal Moola introduces a memory descriptor for page table tracking,
"struct ptdesc" ("Split ptdesc from struct page").
- memfd selftest maintenance work from Aleksa Sarai ("memfd: cleanups
for vm.memfd_noexec").
- MM include file rationalization from Hugh Dickins ("arch: include
asm/cacheflush.h in asm/hugetlb.h").
- THP debug output fixes from Hugh Dickins ("mm,thp: fix sloppy text
output").
- kmemleak improvements from Xiaolei Wang ("mm/kmemleak: use
object_cache instead of kmemleak_initialized").
- More folio-related cleanups from Matthew Wilcox ("Remove _folio_dtor
and _folio_order").
- A VMA locking scalability improvement from Suren Baghdasaryan
("Per-VMA lock support for swap and userfaults").
- pagetable handling cleanups from Matthew Wilcox ("New page table
range API").
- A batch of swap/thp cleanups from David Hildenbrand ("mm/swap: stop
using page->private on tail pages for THP_SWAP + cleanups").
- Cleanups and speedups to the hugetlb fault handling from Matthew
Wilcox ("Change calling convention for ->huge_fault").
- Matthew Wilcox has also done some maintenance work on the MM
subsystem documentation ("Improve mm documentation").
* tag 'mm-stable-2023-08-28-18-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (489 commits)
maple_tree: shrink struct maple_tree
maple_tree: clean up mas_wr_append()
secretmem: convert page_is_secretmem() to folio_is_secretmem()
nios2: fix flush_dcache_page() for usage from irq context
hugetlb: add documentation for vma_kernel_pagesize()
mm: add orphaned kernel-doc to the rst files.
mm: fix clean_record_shared_mapping_range kernel-doc
mm: fix get_mctgt_type() kernel-doc
mm: fix kernel-doc warning from tlb_flush_rmaps()
mm: remove enum page_entry_size
mm: allow ->huge_fault() to be called without the mmap_lock held
mm: move PMD_ORDER to pgtable.h
mm: remove checks for pte_index
memcg: remove duplication detection for mem_cgroup_uncharge_swap
mm/huge_memory: work on folio->swap instead of page->private when splitting folio
mm/swap: inline folio_set_swap_entry() and folio_swap_entry()
mm/swap: use dedicated entry for swap in folio
mm/swap: stop using page->private on tail pages for THP_SWAP
selftests/mm: fix WARNING comparing pointer to 0
selftests: cgroup: fix test_kmem_memcg_deletion kernel mem check
...
|
||
|
Linus Torvalds
|
bd6c11bc43 |
Networking changes for 6.6.
Core
----
- Increase size limits for to-be-sent skb frag allocations. This
allows tun, tap devices and packet sockets to better cope with large
writes operations.
- Store netdevs in an xarray, to simplify iterating over netdevs.
- Refactor nexthop selection for multipath routes.
- Improve sched class lifetime handling.
- Add backup nexthop ID support for bridge.
- Implement drop reasons support in openvswitch.
- Several data races annotations and fixes.
- Constify the sk parameter of routing functions.
- Prepend kernel version to netconsole message.
Protocols
---------
- Implement support for TCP probing the peer being under memory
pressure.
- Remove hard coded limitation on IPv6 specific info placement
inside the socket struct.
- Get rid of sysctl_tcp_adv_win_scale and use an auto-estimated
per socket scaling factor.
- Scaling-up the IPv6 expired route GC via a separated list of
expiring routes.
- In-kernel support for the TLS alert protocol.
- Better support for UDP reuseport with connected sockets.
- Add NEXT-C-SID support for SRv6 End.X behavior, reducing the SR
header size.
- Get rid of additional ancillary per MPTCP connection struct socket.
- Implement support for BPF-based MPTCP packet schedulers.
- Format MPTCP subtests selftests results in TAP.
- Several new SMC 2.1 features including unique experimental options,
max connections per lgr negotiation, max links per lgr negotiation.
BPF
---
- Multi-buffer support in AF_XDP.
- Add multi uprobe BPF links for attaching multiple uprobes
and usdt probes, which is significantly faster and saves extra fds.
- Implement an fd-based tc BPF attach API (TCX) and BPF link support on
top of it.
- Add SO_REUSEPORT support for TC bpf_sk_assign.
- Support new instructions from cpu v4 to simplify the generated code and
feature completeness, for x86, arm64, riscv64.
- Support defragmenting IPv(4|6) packets in BPF.
- Teach verifier actual bounds of bpf_get_smp_processor_id()
and fix perf+libbpf issue related to custom section handling.
- Introduce bpf map element count and enable it for all program types.
- Add a BPF hook in sys_socket() to change the protocol ID
from IPPROTO_TCP to IPPROTO_MPTCP to cover migration for legacy.
- Introduce bpf_me_mcache_free_rcu() and fix OOM under stress.
- Add uprobe support for the bpf_get_func_ip helper.
- Check skb ownership against full socket.
- Support for up to 12 arguments in BPF trampoline.
- Extend link_info for kprobe_multi and perf_event links.
Netfilter
---------
- Speed-up process exit by aborting ruleset validation if a
fatal signal is pending.
- Allow NLA_POLICY_MASK to be used with BE16/BE32 types.
Driver API
----------
- Page pool optimizations, to improve data locality and cache usage.
- Introduce ndo_hwtstamp_get() and ndo_hwtstamp_set() to avoid the need
for raw ioctl() handling in drivers.
- Simplify genetlink dump operations (doit/dumpit) providing them
the common information already populated in struct genl_info.
- Extend and use the yaml devlink specs to [re]generate the split ops.
- Introduce devlink selective dumps, to allow SF filtering SF based on
handle and other attributes.
- Add yaml netlink spec for netlink-raw families, allow route, link and
address related queries via the ynl tool.
- Remove phylink legacy mode support.
- Support offload LED blinking to phy.
- Add devlink port function attributes for IPsec.
New hardware / drivers
----------------------
- Ethernet:
- Broadcom ASP 2.0 (72165) ethernet controller
- MediaTek MT7988 SoC
- Texas Instruments AM654 SoC
- Texas Instruments IEP driver
- Atheros qca8081 phy
- Marvell 88Q2110 phy
- NXP TJA1120 phy
- WiFi:
- MediaTek mt7981 support
- Can:
- Kvaser SmartFusion2 PCI Express devices
- Allwinner T113 controllers
- Texas Instruments tcan4552/4553 chips
- Bluetooth:
- Intel Gale Peak
- Qualcomm WCN3988 and WCN7850
- NXP AW693 and IW624
- Mediatek MT2925
Drivers
-------
- Ethernet NICs:
- nVidia/Mellanox:
- mlx5:
- support UDP encapsulation in packet offload mode
- IPsec packet offload support in eswitch mode
- improve aRFS observability by adding new set of counters
- extends MACsec offload support to cover RoCE traffic
- dynamic completion EQs
- mlx4:
- convert to use auxiliary bus instead of custom interface logic
- Intel
- ice:
- implement switchdev bridge offload, even for LAG interfaces
- implement SRIOV support for LAG interfaces
- igc:
- add support for multiple in-flight TX timestamps
- Broadcom:
- bnxt:
- use the unified RX page pool buffers for XDP and non-XDP
- use the NAPI skb allocation cache
- OcteonTX2:
- support Round Robin scheduling HTB offload
- TC flower offload support for SPI field
- Freescale:
- add XDP_TX feature support
- AMD:
- ionic: add support for PCI FLR event
- sfc:
- basic conntrack offload
- introduce eth, ipv4 and ipv6 pedit offloads
- ST Microelectronics:
- stmmac: maximze PTP timestamping resolution
- Virtual NICs:
- Microsoft vNIC:
- batch ringing RX queue doorbell on receiving packets
- add page pool for RX buffers
- Virtio vNIC:
- add per queue interrupt coalescing support
- Google vNIC:
- add queue-page-list mode support
- Ethernet high-speed switches:
- nVidia/Mellanox (mlxsw):
- add port range matching tc-flower offload
- permit enslavement to netdevices with uppers
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- convert to phylink_pcs
- Renesas:
- r8A779fx: add speed change support
- rzn1: enables vlan support
- Ethernet PHYs:
- convert mv88e6xxx to phylink_pcs
- WiFi:
- Qualcomm Wi-Fi 7 (ath12k):
- extremely High Throughput (EHT) PHY support
- RealTek (rtl8xxxu):
- enable AP mode for: RTL8192FU, RTL8710BU (RTL8188GU),
RTL8192EU and RTL8723BU
- RealTek (rtw89):
- Introduce Time Averaged SAR (TAS) support
- Connector:
- support for event filtering
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"Core:
- Increase size limits for to-be-sent skb frag allocations. This
allows tun, tap devices and packet sockets to better cope with
large writes operations
- Store netdevs in an xarray, to simplify iterating over netdevs
- Refactor nexthop selection for multipath routes
- Improve sched class lifetime handling
- Add backup nexthop ID support for bridge
- Implement drop reasons support in openvswitch
- Several data races annotations and fixes
- Constify the sk parameter of routing functions
- Prepend kernel version to netconsole message
Protocols:
- Implement support for TCP probing the peer being under memory
pressure
- Remove hard coded limitation on IPv6 specific info placement inside
the socket struct
- Get rid of sysctl_tcp_adv_win_scale and use an auto-estimated per
socket scaling factor
- Scaling-up the IPv6 expired route GC via a separated list of
expiring routes
- In-kernel support for the TLS alert protocol
- Better support for UDP reuseport with connected sockets
- Add NEXT-C-SID support for SRv6 End.X behavior, reducing the SR
header size
- Get rid of additional ancillary per MPTCP connection struct socket
- Implement support for BPF-based MPTCP packet schedulers
- Format MPTCP subtests selftests results in TAP
- Several new SMC 2.1 features including unique experimental options,
max connections per lgr negotiation, max links per lgr negotiation
BPF:
- Multi-buffer support in AF_XDP
- Add multi uprobe BPF links for attaching multiple uprobes and usdt
probes, which is significantly faster and saves extra fds
- Implement an fd-based tc BPF attach API (TCX) and BPF link support
on top of it
- Add SO_REUSEPORT support for TC bpf_sk_assign
- Support new instructions from cpu v4 to simplify the generated code
and feature completeness, for x86, arm64, riscv64
- Support defragmenting IPv(4|6) packets in BPF
- Teach verifier actual bounds of bpf_get_smp_processor_id() and fix
perf+libbpf issue related to custom section handling
- Introduce bpf map element count and enable it for all program types
- Add a BPF hook in sys_socket() to change the protocol ID from
IPPROTO_TCP to IPPROTO_MPTCP to cover migration for legacy
- Introduce bpf_me_mcache_free_rcu() and fix OOM under stress
- Add uprobe support for the bpf_get_func_ip helper
- Check skb ownership against full socket
- Support for up to 12 arguments in BPF trampoline
- Extend link_info for kprobe_multi and perf_event links
Netfilter:
- Speed-up process exit by aborting ruleset validation if a fatal
signal is pending
- Allow NLA_POLICY_MASK to be used with BE16/BE32 types
Driver API:
- Page pool optimizations, to improve data locality and cache usage
- Introduce ndo_hwtstamp_get() and ndo_hwtstamp_set() to avoid the
need for raw ioctl() handling in drivers
- Simplify genetlink dump operations (doit/dumpit) providing them the
common information already populated in struct genl_info
- Extend and use the yaml devlink specs to [re]generate the split ops
- Introduce devlink selective dumps, to allow SF filtering SF based
on handle and other attributes
- Add yaml netlink spec for netlink-raw families, allow route, link
and address related queries via the ynl tool
- Remove phylink legacy mode support
- Support offload LED blinking to phy
- Add devlink port function attributes for IPsec
New hardware / drivers:
- Ethernet:
- Broadcom ASP 2.0 (72165) ethernet controller
- MediaTek MT7988 SoC
- Texas Instruments AM654 SoC
- Texas Instruments IEP driver
- Atheros qca8081 phy
- Marvell 88Q2110 phy
- NXP TJA1120 phy
- WiFi:
- MediaTek mt7981 support
- Can:
- Kvaser SmartFusion2 PCI Express devices
- Allwinner T113 controllers
- Texas Instruments tcan4552/4553 chips
- Bluetooth:
- Intel Gale Peak
- Qualcomm WCN3988 and WCN7850
- NXP AW693 and IW624
- Mediatek MT2925
Drivers:
- Ethernet NICs:
- nVidia/Mellanox:
- mlx5:
- support UDP encapsulation in packet offload mode
- IPsec packet offload support in eswitch mode
- improve aRFS observability by adding new set of counters
- extends MACsec offload support to cover RoCE traffic
- dynamic completion EQs
- mlx4:
- convert to use auxiliary bus instead of custom interface
logic
- Intel
- ice:
- implement switchdev bridge offload, even for LAG
interfaces
- implement SRIOV support for LAG interfaces
- igc:
- add support for multiple in-flight TX timestamps
- Broadcom:
- bnxt:
- use the unified RX page pool buffers for XDP and non-XDP
- use the NAPI skb allocation cache
- OcteonTX2:
- support Round Robin scheduling HTB offload
- TC flower offload support for SPI field
- Freescale:
- add XDP_TX feature support
- AMD:
- ionic: add support for PCI FLR event
- sfc:
- basic conntrack offload
- introduce eth, ipv4 and ipv6 pedit offloads
- ST Microelectronics:
- stmmac: maximze PTP timestamping resolution
- Virtual NICs:
- Microsoft vNIC:
- batch ringing RX queue doorbell on receiving packets
- add page pool for RX buffers
- Virtio vNIC:
- add per queue interrupt coalescing support
- Google vNIC:
- add queue-page-list mode support
- Ethernet high-speed switches:
- nVidia/Mellanox (mlxsw):
- add port range matching tc-flower offload
- permit enslavement to netdevices with uppers
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- convert to phylink_pcs
- Renesas:
- r8A779fx: add speed change support
- rzn1: enables vlan support
- Ethernet PHYs:
- convert mv88e6xxx to phylink_pcs
- WiFi:
- Qualcomm Wi-Fi 7 (ath12k):
- extremely High Throughput (EHT) PHY support
- RealTek (rtl8xxxu):
- enable AP mode for: RTL8192FU, RTL8710BU (RTL8188GU),
RTL8192EU and RTL8723BU
- RealTek (rtw89):
- Introduce Time Averaged SAR (TAS) support
- Connector:
- support for event filtering"
* tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1806 commits)
net: ethernet: mtk_wed: minor change in wed_{tx,rx}info_show
net: ethernet: mtk_wed: add some more info in wed_txinfo_show handler
net: stmmac: clarify difference between "interface" and "phy_interface"
r8152: add vendor/device ID pair for D-Link DUB-E250
devlink: move devlink_notify_register/unregister() to dev.c
devlink: move small_ops definition into netlink.c
devlink: move tracepoint definitions into core.c
devlink: push linecard related code into separate file
devlink: push rate related code into separate file
devlink: push trap related code into separate file
devlink: use tracepoint_enabled() helper
devlink: push region related code into separate file
devlink: push param related code into separate file
devlink: push resource related code into separate file
devlink: push dpipe related code into separate file
devlink: move and rename devlink_dpipe_send_and_alloc_skb() helper
devlink: push shared buffer related code into separate file
devlink: push port related code into separate file
devlink: push object register/unregister notifications into separate helpers
inet: fix IP_TRANSPARENT error handling
...
|
||
|
Linus Torvalds
|
68cf01760b |
This update includes the following changes:
API: - Move crypto engine callback from tfm ctx into algorithm object. - Fix atomic sleep bug in crypto_destroy_instance. - Move lib/mpi into lib/crypto. Algorithms: - Add chacha20 and poly1305 implementation for powerpc p10. Drivers: - Add AES skcipher and aead support to starfive. - Add Dynamic Boost Control support to ccp. - Add support for STM32P13 platform to stm32. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEn51F/lCuNhUwmDeSxycdCkmxi6cFAmTsZkMACgkQxycdCkmx i6furw//e6kYK1CTOqidPM6nI0KK1Ok204VXu56H0wM4THZ09ZwcbDNKpvI6vjMi XZkKthiayl/1okmpRVP0rPqMWDtxajeu6IUAQqqFGUFU8R7AqCDrOd+te+zlSFWG 16ySNQO47RND0OzNqZ4ojgCC0n9RpP+zOfndmderZ4EnfXSbodwGUwkcuE7Z96cP jNoainO2iwlyMZPlVynrw61O3RxGu/s/ch+uY1mV+TyvAAWoOlzt57gYUs3eGduz 4Ky+0Ubctg3sfBaqA2Hg6GjtAqG/QUssRyj8YgsFMrgXPHDTbLh6abej39wWo4gz ZdC7Bm47hV/yfVdWe2iq3/5iqdILEdPBh3fDh6NNsZ1Jlm3aEZpH9rEXm0k4X2MJ A9NDAFVj8dAYVZza7+Y8jPc8FNe+HqN9HYip/2K7g68WAJGWnMc9lq9qGwGmg1Gl dn6yM27AgH8B+UljWYM9FS1ZFsc8KCudJavRZqA2d0W3rbXVWAoBBp83ii0yX1Nm ZPAblAYMZCDeCtrVrDYKLtGn566rfpCrv3R5cppwHLksGJsDxgWrjG47l9uy5HXI u05jiXT11R+pjIU2Wv5qsiUIhyvli6AaiFYHIdZ8fWaovPAOdhrCrN3IryvUVHj/ LqMcnmW1rWGNYN9pqHn0sQZ730ZJIma0klhTZOn8HPJNbiK68X0= =LbcA -----END PGP SIGNATURE----- Merge tag 'v6.6-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "API: - Move crypto engine callback from tfm ctx into algorithm object - Fix atomic sleep bug in crypto_destroy_instance - Move lib/mpi into lib/crypto Algorithms: - Add chacha20 and poly1305 implementation for powerpc p10 Drivers: - Add AES skcipher and aead support to starfive - Add Dynamic Boost Control support to ccp - Add support for STM32P13 platform to stm32" * tag 'v6.6-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (149 commits) Revert "dt-bindings: crypto: qcom,prng: Add SM8450" crypto: chelsio - Remove unused declarations X.509: if signature is unsupported skip validation crypto: qat - fix crypto capability detection for 4xxx crypto: drivers - Explicitly include correct DT includes crypto: engine - Remove crypto_engine_ctx crypto: zynqmp - Use new crypto_engine_op interface crypto: virtio - Use new crypto_engine_op interface crypto: stm32 - Use new crypto_engine_op interface crypto: jh7110 - Use new crypto_engine_op interface crypto: rk3288 - Use new crypto_engine_op interface crypto: omap - Use new crypto_engine_op interface crypto: keembay - Use new crypto_engine_op interface crypto: sl3516 - Use new crypto_engine_op interface crypto: caam - Use new crypto_engine_op interface crypto: aspeed - Remove non-standard sha512 algorithms crypto: aspeed - Use new crypto_engine_op interface crypto: amlogic - Use new crypto_engine_op interface crypto: sun8i-ss - Use new crypto_engine_op interface crypto: sun8i-ce - Use new crypto_engine_op interface ... |
||
|
Linus Torvalds
|
815c24a085 |
linux-kselftest-kunit-6.6-rc1
This kunit update for Linux 6.6.rc1 consists of:
-- Adds support for running Rust documentation tests as KUnit tests
-- Makes init, str, sync, types doctests compilable/testable
-- Adds support for attributes API which include speed, modules
attributes, ability to filter and report attributes.
-- Adds support for marking tests slow using attributes API.
-- Adds attributes API documentation
-- Fixes to wild-memory-access bug in kunit_filter_suites() and
a possible memory leak in kunit_filter_suites()
-- Adds support for counting number of test suites in a module, list
action to kunit test modules, and test filtering on module tests.
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Merge tag 'linux-kselftest-kunit-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit updates from Shuah Khan:
- add support for running Rust documentation tests as KUnit tests
- make init, str, sync, types doctests compilable/testable
- add support for attributes API which include speed, modules
attributes, ability to filter and report attributes
- add support for marking tests slow using attributes API
- add attributes API documentation
- fix a wild-memory-access bug in kunit_filter_suites() and a possible
memory leak in kunit_filter_suites()
- add support for counting number of test suites in a module, list
action to kunit test modules, and test filtering on module tests
* tag 'linux-kselftest-kunit-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (25 commits)
kunit: fix struct kunit_attr header
kunit: replace KUNIT_TRIGGER_STATIC_STUB maro with KUNIT_STATIC_STUB_REDIRECT
kunit: Allow kunit test modules to use test filtering
kunit: Make 'list' action available to kunit test modules
kunit: Report the count of test suites in a module
kunit: fix uninitialized variables bug in attributes filtering
kunit: fix possible memory leak in kunit_filter_suites()
kunit: fix wild-memory-access bug in kunit_filter_suites()
kunit: Add documentation of KUnit test attributes
kunit: add tests for filtering attributes
kunit: time: Mark test as slow using test attributes
kunit: memcpy: Mark tests as slow using test attributes
kunit: tool: Add command line interface to filter and report attributes
kunit: Add ability to filter attributes
kunit: Add module attribute
kunit: Add speed attribute
kunit: Add test attributes API structure
MAINTAINERS: add Rust KUnit files to the KUnit entry
rust: support running Rust documentation tests as KUnit ones
rust: types: make doctests compilable/testable
...
|
||
|
Linus Torvalds
|
d637fce034 |
Simplify the locking self-tests via using the new <linux/cleanup.h>
facilities for lock guards. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmTtBG4RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1j8HBAAjCRultcDtiX9GF1KvaHWBVxpSn1Esbl0 NM2hySE9DbZZXG5xDWDFW/levAMq8CzrdQ0uSEgSJU0tneiFtp3li5B5BuSBFUJ6 f837sT8mKEieydahZKL9i8mbiYLuXMwpLPiW+RVS8nXwZokhljqPw8zJ7TKCmMpG naQCJdtYDulUhdnOLKvYB+CXTcOyhGQn92zYUaO71xmjhqNR1+JzMWcheuOsWXK1 UlfW7q+JeFmrbPu90u7WRw3xkGo9BvRv7acatDJ7vInZDbhE0aNrOeq0f9S/zPb0 4TkdjV+EjmHUputkbYahzYFUUmU8v474lSbZYNuH2YUpqplHKwciNec9iDhiXZe0 0JrggpZqhNtNkNarzpsEV2hBBxT5DjlOdBXHhLk8sDIWS0TeyN+ryxlfwICMW0sC UO83ncYfXajJ+jXjzk2y3pf/YG+AKOZT/L4+0hkuXrXf0Ag9Ig3sqUR4VEfB3W5+ uzBolKceoXpxEXP5gLsozsAF6zLNC7x8zYnz/WHn8RJDK50oVEHbO6f+3UapSear e29D7+GG+evTUPxZoQl5EkUfTRBz+xf1ewMTd3OcIgoJpnjGc8qJlpErtkwUJJzn jsus7xGMBRmZwWYK0tdRbVJyG3NmpKTxpqw/kwSnrQTFuOtpoP6ykY7S4d1rBNwR wJmwIfKi1/k= =V/7H -----END PGP SIGNATURE----- Merge tag 'locking-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking update from Ingo Molnar: "Simplify the locking self-tests via using the new <linux/cleanup.h> facilities for lock guards" * tag 'locking-core-2023-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: lockdep/selftests: Use SBRM APIs for wait context tests |
||
|
Linus Torvalds
|
727dbda16b |
hardening updates for v6.6-rc1
- Carve out the new CONFIG_LIST_HARDENED as a more focused subset of
CONFIG_DEBUG_LIST (Marco Elver).
- Fix kallsyms lookup failure under Clang LTO (Yonghong Song).
- Clarify documentation for CONFIG_UBSAN_TRAP (Jann Horn).
- Flexible array member conversion not carried in other tree (Gustavo
A. R. Silva).
- Various strlcpy() and strncpy() removals not carried in other trees
(Azeem Shaikh, Justin Stitt).
- Convert nsproxy.count to refcount_t (Elena Reshetova).
- Add handful of __counted_by annotations not carried in other trees,
as well as an LKDTM test.
- Fix build failure with gcc-plugins on GCC 14+.
- Fix selftests to respect SKIP for signal-delivery tests.
- Fix CFI warning for paravirt callback prototype.
- Clarify documentation for seq_show_option_n() usage.
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Merge tag 'hardening-v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
"As has become normal, changes are scattered around the tree (either
explicitly maintainer Acked or for trivial stuff that went ignored):
- Carve out the new CONFIG_LIST_HARDENED as a more focused subset of
CONFIG_DEBUG_LIST (Marco Elver)
- Fix kallsyms lookup failure under Clang LTO (Yonghong Song)
- Clarify documentation for CONFIG_UBSAN_TRAP (Jann Horn)
- Flexible array member conversion not carried in other tree (Gustavo
A. R. Silva)
- Various strlcpy() and strncpy() removals not carried in other trees
(Azeem Shaikh, Justin Stitt)
- Convert nsproxy.count to refcount_t (Elena Reshetova)
- Add handful of __counted_by annotations not carried in other trees,
as well as an LKDTM test
- Fix build failure with gcc-plugins on GCC 14+
- Fix selftests to respect SKIP for signal-delivery tests
- Fix CFI warning for paravirt callback prototype
- Clarify documentation for seq_show_option_n() usage"
* tag 'hardening-v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (23 commits)
LoadPin: Annotate struct dm_verity_loadpin_trusted_root_digest with __counted_by
kallsyms: Change func signature for cleanup_symbol_name()
kallsyms: Fix kallsyms_selftest failure
nsproxy: Convert nsproxy.count to refcount_t
integrity: Annotate struct ima_rule_opt_list with __counted_by
lkdtm: Add FAM_BOUNDS test for __counted_by
Compiler Attributes: counted_by: Adjust name and identifier expansion
um: refactor deprecated strncpy to memcpy
um: vector: refactor deprecated strncpy
alpha: Replace one-element array with flexible-array member
hardening: Move BUG_ON_DATA_CORRUPTION to hardening options
list: Introduce CONFIG_LIST_HARDENED
list_debug: Introduce inline wrappers for debug checks
compiler_types: Introduce the Clang __preserve_most function attribute
gcc-plugins: Rename last_stmt() for GCC 14+
selftests/harness: Actually report SKIP for signal tests
x86/paravirt: Fix tlb_remove_table function callback prototype warning
EISA: Replace all non-returning strlcpy with strscpy
perf: Replace strlcpy with strscpy
um: Remove strlcpy declaration
...
|
||
|
Linus Torvalds
|
6016fc9162 |
New code for 6.6:
* Make large writes to the page cache fill sparse parts of the cache
with large folios, then use large memcpy calls for the large folio.
* Track the per-block dirty state of each large folio so that a
buffered write to a single byte on a large folio does not result in a
(potentially) multi-megabyte writeback IO.
* Allow some directio completions to be performed in the initiating
task's context instead of punting through a workqueue. This will
reduce latency for some io_uring requests.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Merge tag 'iomap-6.6-merge-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull iomap updates from Darrick Wong:
"We've got some big changes for this release -- I'm very happy to be
landing willy's work to enable large folios for the page cache for
general read and write IOs when the fs can make contiguous space
allocations, and Ritesh's work to track sub-folio dirty state to
eliminate the write amplification problems inherent in using large
folios.
As a bonus, io_uring can now process write completions in the caller's
context instead of bouncing through a workqueue, which should reduce
io latency dramatically. IOWs, XFS should see a nice performance bump
for both IO paths.
Summary:
- Make large writes to the page cache fill sparse parts of the cache
with large folios, then use large memcpy calls for the large folio.
- Track the per-block dirty state of each large folio so that a
buffered write to a single byte on a large folio does not result in
a (potentially) multi-megabyte writeback IO.
- Allow some directio completions to be performed in the initiating
task's context instead of punting through a workqueue. This will
reduce latency for some io_uring requests"
* tag 'iomap-6.6-merge-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (26 commits)
iomap: support IOCB_DIO_CALLER_COMP
io_uring/rw: add write support for IOCB_DIO_CALLER_COMP
fs: add IOCB flags related to passing back dio completions
iomap: add IOMAP_DIO_INLINE_COMP
iomap: only set iocb->private for polled bio
iomap: treat a write through cache the same as FUA
iomap: use an unsigned type for IOMAP_DIO_* defines
iomap: cleanup up iomap_dio_bio_end_io()
iomap: Add per-block dirty state tracking to improve performance
iomap: Allocate ifs in ->write_begin() early
iomap: Refactor iomap_write_delalloc_punch() function out
iomap: Use iomap_punch_t typedef
iomap: Fix possible overflow condition in iomap_write_delalloc_scan
iomap: Add some uptodate state handling helpers for ifs state bitmap
iomap: Drop ifs argument from iomap_set_range_uptodate()
iomap: Rename iomap_page to iomap_folio_state and others
iomap: Copy larger chunks from userspace
iomap: Create large folios in the buffered write path
filemap: Allow __filemap_get_folio to allocate large folios
filemap: Add fgf_t typedef
...
|
||
|
Rob Herring
|
077ca0408c |
lib/genalloc: Explicitly include correct DT includes
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it was merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Link: https://lore.kernel.org/r/20230714175056.4066297-1-robh@kernel.org Signed-off-by: Rob Herring <robh@kernel.org> |
||
|
Takashi Iwai
|
692f551015 |
ASoC: Updates for v6.6
The rest of the updates for v6.6, some of the highlights include:
- A big API cleanup from Morimoto-san, rationalising the places we put
functions.
- Lots of work on the SOF framework, AMD and Intel drivers, including a
lot of cleanup and new device support.
- Standardisation of the presentation of jacks from drivers.
- Provision of some generic sound card DT properties.
- Conversion oof more drivers to the maple tree register cache.
- New drivers for AMD Van Gogh, AWInic AW88261, Cirrus Logic cs42l43,
various Intel platforms, Mediatek MT7986, RealTek RT1017 and StarFive
JH7110.
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Merge tag 'asoc-v6.6' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Updates for v6.6
The rest of the updates for v6.6, some of the highlights include:
- A big API cleanup from Morimoto-san, rationalising the places we put
functions.
- Lots of work on the SOF framework, AMD and Intel drivers, including a
lot of cleanup and new device support.
- Standardisation of the presentation of jacks from drivers.
- Provision of some generic sound card DT properties.
- Conversion oof more drivers to the maple tree register cache.
- New drivers for AMD Van Gogh, AWInic AW88261, Cirrus Logic cs42l43,
various Intel platforms, Mediatek MT7986, RealTek RT1017 and StarFive
JH7110.
|
||
|
Jakub Kicinski
|
bebfbf07c7 |
bpf-next-for-netdev
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZOjkTAAKCRDbK58LschI gx32AP9gaaHFBtOYBfoenKTJfMgv1WhtQHIBas+WN9ItmBx9MAEA4gm/VyQ6oD7O EBjJKJQ2CZ/QKw7cNacXw+l5jF7/+Q0= =8P7g -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2023-08-25 We've added 87 non-merge commits during the last 8 day(s) which contain a total of 104 files changed, 3719 insertions(+), 4212 deletions(-). The main changes are: 1) Add multi uprobe BPF links for attaching multiple uprobes and usdt probes, which is significantly faster and saves extra fds, from Jiri Olsa. 2) Add support BPF cpu v4 instructions for arm64 JIT compiler, from Xu Kuohai. 3) Add support BPF cpu v4 instructions for riscv64 JIT compiler, from Pu Lehui. 4) Fix LWT BPF xmit hooks wrt their return values where propagating the result from skb_do_redirect() would trigger a use-after-free, from Yan Zhai. 5) Fix a BPF verifier issue related to bpf_kptr_xchg() with local kptr where the map's value kptr type and locally allocated obj type mismatch, from Yonghong Song. 6) Fix BPF verifier's check_func_arg_reg_off() function wrt graph root/node which bypassed reg->off == 0 enforcement, from Kumar Kartikeya Dwivedi. 7) Lift BPF verifier restriction in networking BPF programs to treat comparison of packet pointers not as a pointer leak, from Yafang Shao. 8) Remove unmaintained XDP BPF samples as they are maintained in xdp-tools repository out of tree, from Toke Høiland-Jørgensen. 9) Batch of fixes for the tracing programs from BPF samples in order to make them more libbpf-aware, from Daniel T. Lee. 10) Fix a libbpf signedness determination bug in the CO-RE relocation handling logic, from Andrii Nakryiko. 11) Extend libbpf to support CO-RE kfunc relocations. Also follow-up fixes for bpf_refcount shared ownership implementation, both from Dave Marchevsky. 12) Add a new bpf_object__unpin() API function to libbpf, from Daniel Xu. 13) Fix a memory leak in libbpf to also free btf_vmlinux when the bpf_object gets closed, from Hao Luo. 14) Small error output improvements to test_bpf module, from Helge Deller. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (87 commits) selftests/bpf: Add tests for rbtree API interaction in sleepable progs bpf: Allow bpf_spin_{lock,unlock} in sleepable progs bpf: Consider non-owning refs to refcounted nodes RCU protected bpf: Reenable bpf_refcount_acquire bpf: Use bpf_mem_free_rcu when bpf_obj_dropping refcounted nodes bpf: Consider non-owning refs trusted bpf: Ensure kptr_struct_meta is non-NULL for collection insert and refcount_acquire selftests/bpf: Enable cpu v4 tests for RV64 riscv, bpf: Support unconditional bswap insn riscv, bpf: Support signed div/mod insns riscv, bpf: Support 32-bit offset jmp insn riscv, bpf: Support sign-extension mov insns riscv, bpf: Support sign-extension load insns riscv, bpf: Fix missing exception handling and redundant zext for LDX_B/H/W samples/bpf: Add note to README about the XDP utilities moved to xdp-tools samples/bpf: Cleanup .gitignore samples/bpf: Remove the xdp_sample_pkts utility samples/bpf: Remove the xdp1 and xdp2 utilities samples/bpf: Remove the xdp_rxq_info utility samples/bpf: Remove the xdp_redirect* utilities ... ==================== Link: https://lore.kernel.org/r/20230825194319.12727-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Helge Deller
|
382d4cd184 |
lib/clz_ctz.c: Fix __clzdi2() and __ctzdi2() for 32-bit kernels
The gcc compiler translates on some architectures the 64-bit
__builtin_clzll() function to a call to the libgcc function __clzdi2(),
which should take a 64-bit parameter on 32- and 64-bit platforms.
But in the current kernel code, the built-in __clzdi2() function is
defined to operate (wrongly) on 32-bit parameters if BITS_PER_LONG ==
32, thus the return values on 32-bit kernels are in the range from
[0..31] instead of the expected [0..63] range.
This patch fixes the in-kernel functions __clzdi2() and __ctzdi2() to
take a 64-bit parameter on 32-bit kernels as well, thus it makes the
functions identical for 32- and 64-bit kernels.
This bug went unnoticed since kernel 3.11 for over 10 years, and here
are some possible reasons for that:
a) Some architectures have assembly instructions to count the bits and
which are used instead of calling __clzdi2(), e.g. on x86 the bsr
instruction and on ppc cntlz is used. On such architectures the
wrong __clzdi2() implementation isn't used and as such the bug has
no effect and won't be noticed.
b) Some architectures link to libgcc.a, and the in-kernel weak
functions get replaced by the correct 64-bit variants from libgcc.a.
c) __builtin_clzll() and __clzdi2() doesn't seem to be used in many
places in the kernel, and most likely only in uncritical functions,
e.g. when printing hex values via seq_put_hex_ll(). The wrong return
value will still print the correct number, but just in a wrong
formatting (e.g. with too many leading zeroes).
d) 32-bit kernels aren't used that much any longer, so they are less
tested.
A trivial testcase to verify if the currently running 32-bit kernel is
affected by the bug is to look at the output of /proc/self/maps:
Here the kernel uses a correct implementation of __clzdi2():
root@debian:~# cat /proc/self/maps
00010000-00019000 r-xp 00000000 08:05 787324 /usr/bin/cat
00019000-0001a000 rwxp 00009000 08:05 787324 /usr/bin/cat
0001a000-0003b000 rwxp 00000000 00:00 0 [heap]
f7551000-f770d000 r-xp 00000000 08:05 794765 /usr/lib/hppa-linux-gnu/libc.so.6
...
and this kernel uses the broken implementation of __clzdi2():
root@debian:~# cat /proc/self/maps
0000000010000-0000000019000 r-xp 00000000 000000008:000000005 787324 /usr/bin/cat
0000000019000-000000001a000 rwxp 000000009000 000000008:000000005 787324 /usr/bin/cat
000000001a000-000000003b000 rwxp 00000000 00:00 0 [heap]
00000000f73d1000-00000000f758d000 r-xp 00000000 000000008:000000005 794765 /usr/lib/hppa-linux-gnu/libc.so.6
...
Signed-off-by: Helge Deller <deller@gmx.de>
Fixes:
|
||
|
Linus Torvalds
|
6f0edbb833 |
18 hotfixes. 13 are cc:stable and the remainder pertain to post-6.4 issues
or aren't considered suitable for a -stable backport. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZOjuGgAKCRDdBJ7gKXxA jkLlAQDY9sYxhQZp1PFLirUIPeOBjEyifVy6L6gCfk9j0snLggEA2iK+EtuJt2Dc SlMfoTq29zyU/YgfKKwZEVKtPJZOHQU= =oTcj -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2023-08-25-11-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "18 hotfixes. 13 are cc:stable and the remainder pertain to post-6.4 issues or aren't considered suitable for a -stable backport" * tag 'mm-hotfixes-stable-2023-08-25-11-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: shmem: fix smaps BUG sleeping while atomic selftests: cachestat: catch failing fsync test on tmpfs selftests: cachestat: test for cachestat availability maple_tree: disable mas_wr_append() when other readers are possible madvise:madvise_free_pte_range(): don't use mapcount() against large folio for sharing check madvise:madvise_free_huge_pmd(): don't use mapcount() against large folio for sharing check madvise:madvise_cold_or_pageout_pte_range(): don't use mapcount() against large folio for sharing check mm: multi-gen LRU: don't spin during memcg release mm: memory-failure: fix unexpected return value in soft_offline_page() radix tree: remove unused variable mm: add a call to flush_cache_vmap() in vmap_pfn() selftests/mm: FOLL_LONGTERM need to be updated to 0x100 nilfs2: fix general protection fault in nilfs_lookup_dirty_data_buffers() mm/gup: handle cont-PTE hugetlb pages correctly in gup_must_unshare() via GUP-fast selftests: cgroup: fix test_kmem_basic less than error mm: enable page walking API to lock vmas during the walk smaps: use vm_normal_page_pmd() instead of follow_trans_huge_pmd() mm/gup: reintroduce FOLL_NUMA as FOLL_HONOR_NUMA_FAULT |
||
|
Mateusz Guzik
|
c439d5e8a0 |
pcpcntr: add group allocation/free
Allocations and frees are globally serialized on the pcpu lock (and the CPU hotplug lock if enabled, which is the case on Debian). At least one frequent consumer allocates 4 back-to-back counters (and frees them in the same manner), exacerbating the problem. While this does not fully remedy scalability issues, it is a step towards that goal and provides immediate relief. Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> Reviewed-by: Dennis Zhou <dennis@kernel.org> Reviewed-by: Vegard Nossum <vegard.nossum@oracle.com> Link: https://lore.kernel.org/r/20230823050609.2228718-2-mjguzik@gmail.com [Dennis: reflowed a few lines] Signed-off-by: Dennis Zhou <dennis@kernel.org> |
||
|
Christophe Leroy
|
b38460bc46 |
kunit: Fix checksum tests on big endian CPUs
On powerpc64le checksum kunit tests work:
[ 2.011457][ T1] KTAP version 1
[ 2.011662][ T1] # Subtest: checksum
[ 2.011848][ T1] 1..3
[ 2.034710][ T1] ok 1 test_csum_fixed_random_inputs
[ 2.079325][ T1] ok 2 test_csum_all_carry_inputs
[ 2.127102][ T1] ok 3 test_csum_no_carry_inputs
[ 2.127202][ T1] # checksum: pass:3 fail:0 skip:0 total:3
[ 2.127533][ T1] # Totals: pass:3 fail:0 skip:0 total:3
[ 2.127956][ T1] ok 1 checksum
But on powerpc64 and powerpc32 they fail:
[ 1.859890][ T1] KTAP version 1
[ 1.860041][ T1] # Subtest: checksum
[ 1.860201][ T1] 1..3
[ 1.861927][ T58] # test_csum_fixed_random_inputs: ASSERTION FAILED at lib/checksum_kunit.c:243
[ 1.861927][ T58] Expected result == expec, but
[ 1.861927][ T58] result == 54991 (0xd6cf)
[ 1.861927][ T58] expec == 33316 (0x8224)
[ 1.863742][ T1] not ok 1 test_csum_fixed_random_inputs
[ 1.864520][ T60] # test_csum_all_carry_inputs: ASSERTION FAILED at lib/checksum_kunit.c:267
[ 1.864520][ T60] Expected result == expec, but
[ 1.864520][ T60] result == 255 (0xff)
[ 1.864520][ T60] expec == 65280 (0xff00)
[ 1.868820][ T1] not ok 2 test_csum_all_carry_inputs
[ 1.869977][ T62] # test_csum_no_carry_inputs: ASSERTION FAILED at lib/checksum_kunit.c:306
[ 1.869977][ T62] Expected result == expec, but
[ 1.869977][ T62] result == 64515 (0xfc03)
[ 1.869977][ T62] expec == 0 (0x0)
[ 1.872060][ T1] not ok 3 test_csum_no_carry_inputs
[ 1.872102][ T1] # checksum: pass:0 fail:3 skip:0 total:3
[ 1.872458][ T1] # Totals: pass:0 fail:3 skip:0 total:3
[ 1.872791][ T1] not ok 3 checksum
This is because all expected values were calculated for X86 which
is little endian. On big endian systems all precalculated 16 bits
halves must be byte swapped.
And this is confirmed by a huge amount of sparse errors when building
with C=2
So fix all sparse errors and it will naturally work on all endianness.
Fixes:
|
||
|
Liam R. Howlett
|
432af5c966 |
maple_tree: clean up mas_wr_append()
Avoid setting the variables until necessary, and actually use the variables where applicable. Introducing a variable for the slots array avoids spanning multiple lines. Add the missing argument to the documentation. Use the node type when setting the metadata instead of blindly assuming the type. Finally, add a trace point to the function for successful store. Link: https://lkml.kernel.org/r/20230819004356.1454718-3-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Matthew Wilcox (Oracle)
|
f9bff0e318 |
minmax: add in_range() macro
Patch series "New page table range API", v6.
This patchset changes the API used by the MM to set up page table entries.
The four APIs are:
set_ptes(mm, addr, ptep, pte, nr)
update_mmu_cache_range(vma, addr, ptep, nr)
flush_dcache_folio(folio)
flush_icache_pages(vma, page, nr)
flush_dcache_folio() isn't technically new, but no architecture
implemented it, so I've done that for them. The old APIs remain around
but are mostly implemented by calling the new interfaces.
The new APIs are based around setting up N page table entries at once.
The N entries belong to the same PMD, the same folio and the same VMA, so
ptep++ is a legitimate operation, and locking is taken care of for you.
Some architectures can do a better job of it than just a loop, but I have
hesitated to make too deep a change to architectures I don't understand
well.
One thing I have changed in every architecture is that PG_arch_1 is now a
per-folio bit instead of a per-page bit when used for dcache clean/dirty
tracking. This was something that would have to happen eventually, and it
makes sense to do it now rather than iterate over every page involved in a
cache flush and figure out if it needs to happen.
The point of all this is better performance, and Fengwei Yin has measured
improvement on x86. I suspect you'll see improvement on your architecture
too. Try the new will-it-scale test mentioned here:
https://lore.kernel.org/linux-mm/20230206140639.538867-5-fengwei.yin@intel.com/
You'll need to run it on an XFS filesystem and have
CONFIG_TRANSPARENT_HUGEPAGE set.
This patchset is the basis for much of the anonymous large folio work
being done by Ryan, so it's received quite a lot of testing over the last
few months.
This patch (of 38):
Determine if a value lies within a range more efficiently (subtraction +
comparison vs two comparisons and an AND). It also has useful (under some
circumstances) behaviour if the range exceeds the maximum value of the
type. Convert all the conflicting definitions of in_range() within the
kernel; some can use the generic definition while others need their own
definition.
Link: https://lkml.kernel.org/r/20230802151406.3735276-1-willy@infradead.org
Link: https://lkml.kernel.org/r/20230802151406.3735276-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Andrew Morton
|
fcbc329fa3 | merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes | ||
|
Liam R. Howlett
|
cfeb6ae8bc |
maple_tree: disable mas_wr_append() when other readers are possible
The current implementation of append may cause duplicate data and/or
incorrect ranges to be returned to a reader during an update. Although
this has not been reported or seen, disable the append write operation
while the tree is in rcu mode out of an abundance of caution.
During the analysis of the mas_next_slot() the following was
artificially created by separating the writer and reader code:
Writer: reader:
mas_wr_append
set end pivot
updates end metata
Detects write to last slot
last slot write is to start of slot
store current contents in slot
overwrite old end pivot
mas_next_slot():
read end metadata
read old end pivot
return with incorrect range
store new value
Alternatively:
Writer: reader:
mas_wr_append
set end pivot
updates end metata
Detects write to last slot
last lost write to end of slot
store value
mas_next_slot():
read end metadata
read old end pivot
read new end pivot
return with incorrect range
set old end pivot
There may be other accesses that are not safe since we are now updating
both metadata and pointers, so disabling append if there could be rcu
readers is the safest action.
Link: https://lkml.kernel.org/r/20230819004356.1454718-2-Liam.Howlett@oracle.com
Fixes:
|
||
|
Takashi Iwai
|
a057efde80 |
Merge branch 'for-linus' into for-next
Back-merge the 6.5-devel branch for the clean patch application for 6.6 and resolving merge conflicts. Signed-off-by: Takashi Iwai <tiwai@suse.de> |
||
|
Mark Brown
|
0bbe06493b
|
Add cs42l43 PC focused SoundWire CODEC
Merge series from Charles Keepax <ckeepax@opensource.cirrus.com>: This patch chain adds support for the Cirrus Logic cs42l43 PC focused SoundWire CODEC. The chain is currently based of Lee's for-mfd-next branch. This series is mostly just a resend keeping pace with the kernel under it, except for a minor fixup in the ASoC stuff. Thanks, Charles Charles Keepax (4): dt-bindings: mfd: cirrus,cs42l43: Add initial DT binding mfd: cs42l43: Add support for cs42l43 core driver pinctrl: cs42l43: Add support for the cs42l43 ASoC: cs42l43: Add support for the cs42l43 Lucas Tanure (2): soundwire: bus: Allow SoundWire peripherals to register IRQ handlers spi: cs42l43: Add SPI controller support .../bindings/sound/cirrus,cs42l43.yaml | 313 +++ MAINTAINERS | 4 + drivers/mfd/Kconfig | 23 + drivers/mfd/Makefile | 3 + drivers/mfd/cs42l43-i2c.c | 98 + drivers/mfd/cs42l43-sdw.c | 239 ++ drivers/mfd/cs42l43.c | 1188 +++++++++ drivers/mfd/cs42l43.h | 28 + drivers/pinctrl/cirrus/Kconfig | 11 + drivers/pinctrl/cirrus/Makefile | 2 + drivers/pinctrl/cirrus/pinctrl-cs42l43.c | 609 +++++ drivers/soundwire/bus.c | 32 + drivers/soundwire/bus_type.c | 12 + drivers/spi/Kconfig | 7 + drivers/spi/Makefile | 1 + drivers/spi/spi-cs42l43.c | 284 ++ include/linux/mfd/cs42l43-regs.h | 1184 +++++++++ include/linux/mfd/cs42l43.h | 102 + include/linux/soundwire/sdw.h | 9 + include/sound/cs42l43.h | 17 + sound/soc/codecs/Kconfig | 16 + sound/soc/codecs/Makefile | 4 + sound/soc/codecs/cs42l43-jack.c | 946 +++++++ sound/soc/codecs/cs42l43-sdw.c | 74 + sound/soc/codecs/cs42l43.c | 2278 +++++++++++++++++ sound/soc/codecs/cs42l43.h | 131 + 26 files changed, 7615 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/cirrus,cs42l43.yaml create mode 100644 drivers/mfd/cs42l43-i2c.c create mode 100644 drivers/mfd/cs42l43-sdw.c create mode 100644 drivers/mfd/cs42l43.c create mode 100644 drivers/mfd/cs42l43.h create mode 100644 drivers/pinctrl/cirrus/pinctrl-cs42l43.c create mode 100644 drivers/spi/spi-cs42l43.c create mode 100644 include/linux/mfd/cs42l43-regs.h create mode 100644 include/linux/mfd/cs42l43.h create mode 100644 include/sound/cs42l43.h create mode 100644 sound/soc/codecs/cs42l43-jack.c create mode 100644 sound/soc/codecs/cs42l43-sdw.c create mode 100644 sound/soc/codecs/cs42l43.c create mode 100644 sound/soc/codecs/cs42l43.h -- 2.30.2 |
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Andrew Morton
|
5994eabf3b | merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes | ||
|
Andy Shevchenko
|
3d0b713984 |
kstrtox: consistently use _tolower()
We already use _tolower() in other places, so convert the one which open codes it. Link: https://lkml.kernel.org/r/20230817145919.543251-1-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Andy Shevchenko
|
6655360923 |
lib/vsprintf: declare no_hash_pointers in sprintf.h
Sparse is not happy to see non-static variable without declaration: lib/vsprintf.c:61:6: warning: symbol 'no_hash_pointers' was not declared. Should it be static? Declare respective variable in the sprintf.h. With this, add a comment to discourage its use if no real need. Link: https://lkml.kernel.org/r/20230814163344.17429-3-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Marco Elver <elver@google.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Andy Shevchenko
|
39ced19b9e |
lib/vsprintf: split out sprintf() and friends
Patch series "lib/vsprintf: Rework header inclusions", v3. Some patches that reduce the mess with the header inclusions related to vsprintf.c module. Each patch has its own description, and has no dependencies to each other, except the collisions over modifications of the same places. Hence the series. This patch (of 2): kernel.h is being used as a dump for all kinds of stuff for a long time. sprintf() and friends are used in many drivers without need of the full kernel.h dependency train with it. Here is the attempt on cleaning it up by splitting out sprintf() and friends. Link: https://lkml.kernel.org/r/20230814163344.17429-1-andriy.shevchenko@linux.intel.com Link: https://lkml.kernel.org/r/20230814163344.17429-2-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Marco Elver <elver@google.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Liam R. Howlett
|
530f745c76 |
maple_tree: replace data before marking dead in split and spanning store
Reorder the operations for split and spanning stores so that new data is placed in the tree prior to marking the old data as dead. This will limit re-walks on dead data to just once instead of a retry loop. The order of operations is as follows: Create the new data, put the new data in place, mark the top node of the old data as dead. Then repair parent links in the reused nodes through all levels of the tree, following the new nodes downwards. Finally walk the top dead node looking for nodes that are no longer used, or subtrees that should be destroyed (marked dead throughout then freed), follow the partially used nodes downwards to discover other dead nodes and subtrees. Link: https://lkml.kernel.org/r/20230804165951.2661157-7-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Liam R. Howlett
|
068bafcac0 |
maple_tree: change mas_adopt_children() parent usage
All calls to mas_adopt_children() currently pass the parent as the node in the maple state. Allow for the parent pointer that is passed in to be used instead. Link: https://lkml.kernel.org/r/20230804165951.2661157-6-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Liam R. Howlett
|
4ffc2ee2cf |
maple_tree: introduce mas_tree_parent() definition
Add a definition to shorten long code lines and clarify what the code is doing. Use the new definition to get the maple tree parent pointer from the maple state where possible. Link: https://lkml.kernel.org/r/20230804165951.2661157-5-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
|
1238f6a226 |
maple_tree: introduce mas_put_in_tree()
mas_replace() has a single user that takes a flag which is now always true. Replace this function with mas_put_in_tree() to better align with mas_replace_node(). Inline the remaining logic into the only caller; mas_wmb_replace(). Link: https://lkml.kernel.org/r/20230804165951.2661157-4-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
|
72bcf4aa86 |
maple_tree: reorder replacement of nodes to avoid live lock
Replacing nodes may cause a live lock-up if CPU resources are saturated by write operations on the tree by continuously retrying on dead nodes. To avoid the continuous retry scenario, ensure the new node is inserted into the tree prior to marking the old data as dead. This will define a window where old and new data is swapped. When reusing lower level nodes, ensure the parent pointer is updated after the parent is marked dead. This ensures that the child is still reachable from the top of the tree, but walking up to a dead node will result in a single retry that will start a fresh walk from the top down through the new node. Link: https://lkml.kernel.org/r/20230804165951.2661157-3-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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83d97f620f |
maple_tree: add hex output to maple_arange64 dump
Patch series "maple_tree: Change replacement strategy". The maple tree marks nodes dead as soon as they are going to be replaced. This could be problematic when used in the RCU context since the writer may be starved of CPU time by the readers. This patch set addresses the issue by switching the data replacement strategy to one that will only mark data as dead once the new data is available. This series changes the ordering of the node replacement so that the new data is live before the old data is marked 'dead'. When readers hit 'dead' nodes, they will restart from the top of the tree and end up in the new data. In more complex scenarios, the replacement strategy means a subtree is built and graphed into the tree leaving some nodes to point to the old parent. The view of tasks into the old data will either remain with the old data, or see the new data once the old data is marked 'dead'. Iterators will see the 'dead' node and restart on their own and switch to the new data. There is no risk of the reader seeing old data in these cases. The 'dead' subtree of data is then fully marked dead, but reused nodes will still point to the dead nodes until the parent pointer is updated. Walking up to a 'dead' node will cause a re-walk from the top of the tree and enter the new data area where old data is not reachable. Once the parent pointers are fully up to date in the active data, the 'dead' subtree is iterated to collect entirely 'dead' subtrees, and dead nodes (nodes that partially contained reused data). This patch (of 6): When dumping the tree, honour formatting request to output hex for the maple node type arange64. Link: https://lkml.kernel.org/r/20230804165951.2661157-1-Liam.Howlett@oracle.com Link: https://lkml.kernel.org/r/20230804165951.2661157-2-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Arnd Bergmann
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d59070d107 |
radix tree: remove unused variable
Recent versions of clang warn about an unused variable, though older
versions saw the 'slot++' as a use and did not warn:
radix-tree.c:1136:50: error: parameter 'slot' set but not used [-Werror,-Wunused-but-set-parameter]
It's clearly not needed any more, so just remove it.
Link: https://lkml.kernel.org/r/20230811131023.2226509-1-arnd@kernel.org
Fixes:
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||
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Rae Moar
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25e324bc9c |
kunit: fix struct kunit_attr header
Add parameter descriptions to struct kunit_attr header for the
parameters attr_default and print.
Fixes:
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||
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Zhen Lei
|
1b28cb81da |
kobject: Remove redundant checks for whether ktype is NULL
When adding koject or kset, we have made sure that ktype cannot be NULL. Therefore, after adding koject or kset, there is no need to worry about ktype being NULL. Clear all ktype-related redundancy checks. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/r/20230805084114.1298-3-thunder.leizhen@huaweicloud.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Zhen Lei
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4d0fe8c52b |
kobject: Add sanity check for kset->kobj.ktype in kset_register()
When I register a kset in the following way:
static struct kset my_kset;
kobject_set_name(&my_kset.kobj, "my_kset");
ret = kset_register(&my_kset);
A null pointer dereference exception is occurred:
[ 4453.568337] Unable to handle kernel NULL pointer dereference at \
virtual address 0000000000000028
... ...
[ 4453.810361] Call trace:
[ 4453.813062] kobject_get_ownership+0xc/0x34
[ 4453.817493] kobject_add_internal+0x98/0x274
[ 4453.822005] kset_register+0x5c/0xb4
[ 4453.825820] my_kobj_init+0x44/0x1000 [my_kset]
... ...
Because I didn't initialize my_kset.kobj.ktype.
According to the description in Documentation/core-api/kobject.rst:
- A ktype is the type of object that embeds a kobject. Every structure
that embeds a kobject needs a corresponding ktype.
So add sanity check to make sure kset->kobj.ktype is not NULL.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20230805084114.1298-2-thunder.leizhen@huaweicloud.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Jakub Kicinski
|
7ff57803d2 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/ethernet/sfc/tc.c |
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Douglas Anderson
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8d539b84f1 |
nmi_backtrace: allow excluding an arbitrary CPU
The APIs that allow backtracing across CPUs have always had a way to exclude the current CPU. This convenience means callers didn't need to find a place to allocate a CPU mask just to handle the common case. Let's extend the API to take a CPU ID to exclude instead of just a boolean. This isn't any more complex for the API to handle and allows the hardlockup detector to exclude a different CPU (the one it already did a trace for) without needing to find space for a CPU mask. Arguably, this new API also encourages safer behavior. Specifically if the caller wants to avoid tracing the current CPU (maybe because they already traced the current CPU) this makes it more obvious to the caller that they need to make sure that the current CPU ID can't change. [akpm@linux-foundation.org: fix trigger_allbutcpu_cpu_backtrace() stub] Link: https://lkml.kernel.org/r/20230804065935.v4.1.Ia35521b91fc781368945161d7b28538f9996c182@changeid Signed-off-by: Douglas Anderson <dianders@chromium.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: kernel test robot <lkp@intel.com> Cc: Lecopzer Chen <lecopzer.chen@mediatek.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Pingfan Liu <kernelfans@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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John Sanpe
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02d7f74a04 |
lib/bch.c: use bitrev instead of internal logic
Replace internal logic with separate bitrev library. Link: https://lkml.kernel.org/r/20230730081717.1498217-1-sanpeqf@gmail.com Signed-off-by: John Sanpe <sanpeqf@gmail.com> Cc: Bhaskar Chowdhury <unixbhaskar@gmail.com> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Wang Ming
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a7284b0e75 |
lib: error-inject: remove error checking for debugfs_create_dir()
It is expected that most callers should _ignore_ the errors return by debugfs_create_dir() in ei_debugfs_init(). Link: https://lkml.kernel.org/r/20230719144355.6720-1-machel@vivo.com Signed-off-by: Wang Ming <machel@vivo.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Wang Ming
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c3d2d45b06 |
lib: remove error checking for debugfs_create_dir()
It is expected that most callers should _ignore_ the errors return by debugfs_create_dir() in err_inject_init(). Link: https://lkml.kernel.org/r/20230713082455.2415-1-machel@vivo.com Signed-off-by: Wang Ming <machel@vivo.com> Cc: Akinobu Mita <akinobu.mita@gmail.com> Cc: David Hildenbrand <david@redhat.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Sumitra Sharma
|
ae96e0cdc7 |
lib: replace kmap() with kmap_local_page()
kmap() has been deprecated in favor of the kmap_local_page() due to high cost, restricted mapping space, the overhead of a global lock for synchronization, and making the process sleep in the absence of free slots. kmap_local_page() is faster than kmap() and offers thread-local and CPU-local mappings, take pagefaults in a local kmap region and preserves preemption by saving the mappings of outgoing tasks and restoring those of the incoming one during a context switch. The mappings are kept thread local in the functions “dmirror_do_read” and “dmirror_do_write” in test_hmm.c Therefore, replace kmap() with kmap_local_page() and use mempcy_from/to_page() to avoid open coding kmap_local_page() + memcpy() + kunmap_local(). Remove the unused variable “tmp”. Link: https://lkml.kernel.org/r/20230610175712.GA348514@sumitra.com Signed-off-by: Sumitra Sharma <sumitraartsy@gmail.com> Suggested-by: Fabio M. De Francesco <fmdefrancesco@gmail.com> Reviewed-by: Fabio M. De Francesco <fmdefrancesco@gmail.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Cc: Deepak R Varma <drv@mailo.com> Cc: Jérôme Glisse <jglisse@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
|
fec2936434 |
maple_tree: reduce resets during store setup
mas_prealloc() may walk partially down the tree before finding that a split or spanning store is needed. When the write occurs, relax the logic on resetting the walk so that partial walks will not restart, but walks that have gone too far (a store that affects beyond the current node) should be restarted. Link: https://lkml.kernel.org/r/20230724183157.3939892-15-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
|
17983dc617 |
maple_tree: refine mas_preallocate() node calculations
Calculate the number of nodes based on the pending write action instead of assuming the worst case. This addresses a performance regression introduced in platforms that have longer allocation timing. Link: https://lkml.kernel.org/r/20230724183157.3939892-14-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
|
a7496ad529 |
maple_tree: move mas_wr_end_piv() below mas_wr_extend_null()
Relocate it and call mas_wr_extend_null() from within mas_wr_end_piv(). Extending the NULL may affect the end pivot value so call mas_wr_endtend_null() from within mas_wr_end_piv() to keep it all together. Link: https://lkml.kernel.org/r/20230724183157.3939892-12-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
|
c108df767f |
maple_tree: adjust node allocation on mas_rebalance()
mas_rebalance() is called to rebalance an insufficient node into a single node or two sufficient nodes. The preallocation estimate is always too many in this case as the height of the tree will never grow and there is no possibility to have a three way split in this case, so revise the node allocation count. Link: https://lkml.kernel.org/r/20230724183157.3939892-9-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Liam R. Howlett
|
da0892547b |
maple_tree: re-introduce entry to mas_preallocate() arguments
The current preallocation strategy is to preallocate the absolute worst-case allocation for a tree modification. The entry (or NULL) is needed to know how many nodes are needed to write to the tree. Start by adding the argument to the mas_preallocate() definition. Link: https://lkml.kernel.org/r/20230724183157.3939892-8-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Liam R. Howlett
|
8c314f3b55 |
maple_tree: add benchmarking for mas_prev()
Add some benchmarking functions in testing for mas_prev(). This is useful to ensure there are no regressions added during modifications. Link: https://lkml.kernel.org/r/20230724183157.3939892-3-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Liam R. Howlett
|
361c678be7 |
maple_tree: add benchmarking for mas_for_each
Patch series "Reduce preallocations for maple tree", v3. Initial work on preallocations showed no regression in performance during testing, but recently some users (both on [1] and off [android] list) have reported that preallocating the worst-case number of nodes has caused some slow down. This patch set addresses the number of allocations in a few ways. During munmap() most munmap() operations will remove a single VMA, so leverage the fact that the maple tree can place a single pointer at range 0 - 0 without allocating. This is done by changing the index of the VMAs to be indexed by the count, starting at 0. Re-introduce the entry argument to mas_preallocate() so that a more intelligent guess of the node count can be made. Implement the more intelligent guess of the node count, although there is more work to be done. During development of v2 of this patch set, I also noticed that the number of nodes being allocated for a rebalance was beyond what could possibly be needed. This is addressed in patch 0008. This patch (of 15): Add a way to test the speed of mas_for_each() to the testing code. Link: https://lkml.kernel.org/r/20230724183157.3939892-1-Liam.Howlett@oracle.com Link: https://lkml.kernel.org/r/20230724183157.3939892-2-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Liam R. Howlett
|
19a462f06e |
maple_tree: Be more strict about locking
Use lockdep to check the write path in the maple tree holds the lock in write mode. Introduce mt_write_lock_is_held() to check if the lock is held for writing. Update the necessary checks for rcu_dereference_protected() to use the new write lock check. Link: https://lkml.kernel.org/r/20230714195551.894800-5-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oliver Sang <oliver.sang@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Mike Rapoport (IBM)
|
4ae6944d15 |
maple_tree: mtree_insert: fix typo in kernel-doc description of GFP flags
Replace FGP_FLAGS with GFP_FLAGS Link: https://lkml.kernel.org/r/20230715084038.987955-1-rppt@kernel.org Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Mike Rapoport (IBM)
|
4445e58264 |
maple_tree: mtree_insert*: fix typo in kernel-doc description
Replace "Insert and entry at a give index" with "Insert an entry at a given index" Link: https://lkml.kernel.org/r/20230715143920.994812-1-rppt@kernel.org Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Andrew Donnellan
|
efb78fa86e |
lib/test_meminit: allocate pages up to order MAX_ORDER
test_pages() tests the page allocator by calling alloc_pages() with
different orders up to order 10.
However, different architectures and platforms support different maximum
contiguous allocation sizes. The default maximum allocation order
(MAX_ORDER) is 10, but architectures can use CONFIG_ARCH_FORCE_MAX_ORDER
to override this. On platforms where this is less than 10, test_meminit()
will blow up with a WARN(). This is expected, so let's not do that.
Replace the hardcoded "10" with the MAX_ORDER macro so that we test
allocations up to the expected platform limit.
Link: https://lkml.kernel.org/r/20230714015238.47931-1-ajd@linux.ibm.com
Fixes:
|
||
|
Peng Zhang
|
6783bd4b5f |
maple_tree: drop mas_first_entry()
The internal function mas_first_entry() is no longer used, so drop it. Link: https://lkml.kernel.org/r/20230711035444.526-9-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peng Zhang
|
29b2681f1a |
maple_tree: replace mas_logical_pivot() with mas_safe_pivot()
Replace mas_logical_pivot() with mas_safe_pivot() and drop mas_logical_pivot() since it won't be used anymore. We can do this since now all nodes will have node limit pivot (if it is not full node). Link: https://lkml.kernel.org/r/20230711035444.526-8-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peng Zhang
|
a489539e33 |
maple_tree: update mt_validate()
Instead of using mas_first_entry() to find the leftmost leaf, use a simple loop instead. Remove an unneeded check for root node. To make the error message more accurate, check pivots first and then slots, because checking slots depend on the node limit pivot to break the loop. Link: https://lkml.kernel.org/r/20230711035444.526-7-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peng Zhang
|
33af39d024 |
maple_tree: make mas_validate_limits() check root node and node limit
Update mas_validate_limits() to check root node, check node limit pivot if there is enough room for it to exist and check data_end. Remove the check for child existence as it is done in mas_validate_child_slot(). Link: https://lkml.kernel.org/r/20230711035444.526-6-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Peng Zhang
|
e93fda5a1a |
maple_tree: fix mas_validate_child_slot() to check last missed slot
Don't break the loop before checking the last slot. Also here check if non-leaf nodes are missing children. Link: https://lkml.kernel.org/r/20230711035444.526-5-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peng Zhang
|
f8e5eac8ab |
maple_tree: make mas_validate_gaps() to check metadata
Make mas_validate_gaps() check whether the offset in the metadata points to the largest gap. By the way, simplify this function. Add the verification that gaps beyond the node limit are zero. Link: https://lkml.kernel.org/r/20230711035444.526-4-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Peng Zhang
|
d695c30a8c |
maple_tree: don't use MAPLE_ARANGE64_META_MAX to indicate no gap
Patch series "Improve the validation for maple tree and some cleanup", v2. This patch (of 7): Do not use a special offset to indicate that there is no gap. When there is no gap, offset can point to any valid slots because its gap is 0. Link: https://lkml.kernel.org/r/20230711035444.526-1-zhangpeng.00@bytedance.com Link: https://lkml.kernel.org/r/20230711035444.526-3-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Peng Zhang
|
64891ba3e5 |
maple_tree: add a fast path case in mas_wr_slot_store()
When expanding a range in two directions, only partially overwriting the previous and next ranges, the number of entries will not be increased, so we can just update the pivots as a fast path. However, it may introduce potential risks in RCU mode, because it updates two pivots. We only enable it in non-RCU mode. Link: https://lkml.kernel.org/r/20230628073657.75314-5-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Peng Zhang
|
23e9dde0b2 |
maple_tree: optimize mas_wr_append(), also improve duplicating VMAs
When the new range can be completely covered by the original last range without touching the boundaries on both sides, two new entries can be appended to the end as a fast path. We update the original last pivot at the end, and the newly appended two entries will not be accessed before this, so it is also safe in RCU mode. This is useful for sequential insertion, which is what we do in dup_mmap(). Enabling BENCH_FORK in test_maple_tree and just running bench_forking() gives the following time-consuming numbers: before: after: 17,874.83 msec 15,738.38 msec It shows about a 12% performance improvement for duplicating VMAs. Link: https://lkml.kernel.org/r/20230628073657.75314-4-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Peng Zhang
|
d6e8d0dc19 |
maple_tree: add test for mas_wr_modify() fast path
Patch series "Optimize the fast path of mas_store()", v4. Add fast paths for mas_wr_append() and mas_wr_slot_store() respectively. The newly added fast path of mas_wr_append() is used in fork() and how much it benefits fork() depends on how many VMAs are duplicated. Thanks Liam for the review. This patch (of 4): Add tests for all cases of mas_wr_append() and mas_wr_slot_store(). Link: https://lkml.kernel.org/r/20230628073657.75314-1-zhangpeng.00@bytedance.com Link: https://lkml.kernel.org/r/20230628073657.75314-2-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Thomas Gleixner
|
fad9c80e63 |
maple_tree: fix a few documentation issues
The documentation of mt_next() claims that it starts the search at the provided index. That's incorrect as it starts the search after the provided index. The documentation of mt_find() is slightly confusing. "Handles locking" is not really helpful as it does not explain how the "locking" works. Also the documentation of index talks about a range, while in reality the index is updated on a succesful search to the index of the found entry plus one. Fix similar issues for mt_find_after() and mt_prev(). Reword the confusing "Note: Will not return the zero entry." comment on mt_for_each() and document @__index correctly. Link: https://lkml.kernel.org/r/87ttw2n556.ffs@tglx Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Shanker Donthineni <sdonthineni@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Helge Deller
|
b6594a17ec |
bpf/tests: Enhance output on error and fix typos
If a testcase returns a wrong (unexpected) value, print the expected and returned value in hex notation in addition to the decimal notation. This is very useful in tests which bit-shift hex values left or right and helped me a lot while developing the JIT compiler for the hppa architecture. Additionally fix two typos: dowrd -> dword, tall calls -> tail calls. Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/ZN6ZAAVoWZpsD1Jf@p100 |
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|
Takashi Iwai
|
70e969eb23 |
iov_iter: Export import_ubuf()
Export import_ubuf() to be used in sound subsystem for generic memory handling as Linus suggested. It's used for constructing an iov_iter of a single segment user-space copy for PCM data. Cc: Alexander Viro <viro@zeniv.linux.org.uk> Link: https://lore.kernel.org/r/CAHk-=wh-mUL6mp4chAc6E_UjwpPLyCPRCJK+iB4ZMD2BqjwGHA@mail.gmail.com Link: https://lore.kernel.org/r/20230815190136.8987-2-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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|
Nathan Chancellor
|
92382d7441 |
lib: test_scanf: Add explicit type cast to result initialization in test_number_prefix()
A recent change in clang allows it to consider more expressions as
compile time constants, which causes it to point out an implicit
conversion in the scanf tests:
lib/test_scanf.c:661:2: warning: implicit conversion from 'int' to 'unsigned char' changes value from -168 to 88 [-Wconstant-conversion]
661 | test_number_prefix(unsigned char, "0xA7", "%2hhx%hhx", 0, 0xa7, 2, check_uchar);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
lib/test_scanf.c:609:29: note: expanded from macro 'test_number_prefix'
609 | T result[2] = {~expect[0], ~expect[1]}; \
| ~ ^~~~~~~~~~
1 warning generated.
The result of the bitwise negation is the type of the operand after
going through the integer promotion rules, so this truncation is
expected but harmless, as the initial values in the result array get
overwritten by _test() anyways. Add an explicit cast to the expected
type in test_number_prefix() to silence the warning. There is no
functional change, as all the tests still pass with GCC 13.1.0 and clang
18.0.0.
Cc: stable@vger.kernel.org
Link: https://github.com/ClangBuiltLinux/linuxq/issues/1899
Link:
|
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|
Marco Elver
|
aa9f10d570 |
hardening: Move BUG_ON_DATA_CORRUPTION to hardening options
BUG_ON_DATA_CORRUPTION is turning detected corruptions of list data structures from WARNings into BUGs. This can be useful to stop further corruptions or even exploitation attempts. However, the option has less to do with debugging than with hardening. With the introduction of LIST_HARDENED, it makes more sense to move it to the hardening options, where it selects LIST_HARDENED instead. Without this change, combining BUG_ON_DATA_CORRUPTION with LIST_HARDENED alone wouldn't be possible, because DEBUG_LIST would always be selected by BUG_ON_DATA_CORRUPTION. Signed-off-by: Marco Elver <elver@google.com> Link: https://lore.kernel.org/r/20230811151847.1594958-4-elver@google.com Signed-off-by: Kees Cook <keescook@chromium.org> |
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|
Marco Elver
|
aebc7b0d8d |
list: Introduce CONFIG_LIST_HARDENED
Numerous production kernel configs (see [1, 2]) are choosing to enable
CONFIG_DEBUG_LIST, which is also being recommended by KSPP for hardened
configs [3]. The motivation behind this is that the option can be used
as a security hardening feature (e.g. CVE-2019-2215 and CVE-2019-2025
are mitigated by the option [4]).
The feature has never been designed with performance in mind, yet common
list manipulation is happening across hot paths all over the kernel.
Introduce CONFIG_LIST_HARDENED, which performs list pointer checking
inline, and only upon list corruption calls the reporting slow path.
To generate optimal machine code with CONFIG_LIST_HARDENED:
1. Elide checking for pointer values which upon dereference would
result in an immediate access fault (i.e. minimal hardening
checks). The trade-off is lower-quality error reports.
2. Use the __preserve_most function attribute (available with Clang,
but not yet with GCC) to minimize the code footprint for calling
the reporting slow path. As a result, function size of callers is
reduced by avoiding saving registers before calling the rarely
called reporting slow path.
Note that all TUs in lib/Makefile already disable function tracing,
including list_debug.c, and __preserve_most's implied notrace has
no effect in this case.
3. Because the inline checks are a subset of the full set of checks in
__list_*_valid_or_report(), always return false if the inline
checks failed. This avoids redundant compare and conditional
branch right after return from the slow path.
As a side-effect of the checks being inline, if the compiler can prove
some condition to always be true, it can completely elide some checks.
Since DEBUG_LIST is functionally a superset of LIST_HARDENED, the
Kconfig variables are changed to reflect that: DEBUG_LIST selects
LIST_HARDENED, whereas LIST_HARDENED itself has no dependency on
DEBUG_LIST.
Running netperf with CONFIG_LIST_HARDENED (using a Clang compiler with
"preserve_most") shows throughput improvements, in my case of ~7% on
average (up to 20-30% on some test cases).
Link: https://r.android.com/1266735 [1]
Link: https://gitlab.archlinux.org/archlinux/packaging/packages/linux/-/blob/main/config [2]
Link: https://kernsec.org/wiki/index.php/Kernel_Self_Protection_Project/Recommended_Settings [3]
Link: https://googleprojectzero.blogspot.com/2019/11/bad-binder-android-in-wild-exploit.html [4]
Signed-off-by: Marco Elver <elver@google.com>
Link: https://lore.kernel.org/r/20230811151847.1594958-3-elver@google.com
Signed-off-by: Kees Cook <keescook@chromium.org>
|
||
|
Marco Elver
|
b16c42c8fd |
list_debug: Introduce inline wrappers for debug checks
Turn the list debug checking functions __list_*_valid() into inline functions that wrap the out-of-line functions. Care is taken to ensure the inline wrappers are always inlined, so that additional compiler instrumentation (such as sanitizers) does not result in redundant outlining. This change is preparation for performing checks in the inline wrappers. No functional change intended. Signed-off-by: Marco Elver <elver@google.com> Link: https://lore.kernel.org/r/20230811151847.1594958-2-elver@google.com Signed-off-by: Kees Cook <keescook@chromium.org> |
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|
WANG Xuerui
|
7b3c70c43c |
raid6: test: only check for Altivec if building on powerpc hosts
Altivec is only available for powerpc hosts, so only check for its availability when the host is powerpc, to avoid error messages being shown on architectures other than x86, arm or powerpc. Signed-off-by: WANG Xuerui <git@xen0n.name> Link: https://lore.kernel.org/r/20230731104911.411964-6-kernel@xen0n.name Signed-off-by: Song Liu <song@kernel.org> |
||
|
WANG Xuerui
|
6601f5e122 |
raid6: test: make sure all intermediate and artifact files are .gitignored
Currently when the raid6test utility is built, the resulting binary and an int.uc file are not being ignored, which can get inadvertently committed as a result when one works on the raid6 code. Ignore them to make `git status` clean at all times. Signed-off-by: WANG Xuerui <git@xen0n.name> Link: https://lore.kernel.org/r/20230731104911.411964-5-kernel@xen0n.name Signed-off-by: Song Liu <song@kernel.org> |
||
|
WANG Xuerui
|
2008d89fb6 |
raid6: test: cosmetic cleanups for the test Makefile
Use tabs/spaces consistently: hard tabs for marking recipe lines only, spaces for everything else. Also, the OPTFLAGS declaration actually included the tabs preceding the line comment, making compiler invocation lines unnecessarily long. As the entire block of declarations are meant for ad-hoc customization (otherwise they would probably make use of `?=` instead of `=`), move the "Adjust as desired" comment above the block too to fix the long invocation lines. Signed-off-by: WANG Xuerui <git@xen0n.name> Link: https://lore.kernel.org/r/20230731104911.411964-4-kernel@xen0n.name Signed-off-by: Song Liu <song@kernel.org> |
||
|
WANG Xuerui
|
9dd6e1da81 |
raid6: guard the tables.c include of <linux/export.h> with __KERNEL__
The export directives for the tables are already emitted with __KERNEL__ guards, but the <linux/export.h> include is not, causing errors when building the raid6test program. Guard this include too to fix the raid6test build. Signed-off-by: WANG Xuerui <git@xen0n.name> Link: https://lore.kernel.org/r/20230731104911.411964-3-kernel@xen0n.name Signed-off-by: Song Liu <song@kernel.org> |
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|
WANG Xuerui
|
5afcf28d07 |
raid6: remove the <linux/export.h> include from recov.c
There is no exported symbol left in recov.c, so the include is now unnecessary, and breaks the raid6test build. Remove it. Signed-off-by: WANG Xuerui <git@xen0n.name> Link: https://lore.kernel.org/r/20230731104911.411964-2-kernel@xen0n.name Signed-off-by: Song Liu <song@kernel.org> |
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|
Greg Kroah-Hartman
|
e75850b457 |
Merge 6.5-rc6 into char-misc-next
We need the char/misc fixes in here as well to build on top of. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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|
Linus Torvalds
|
190bf7b14b |
14 hotfixes. 11 of these are cc:stable and the remainder address post-6.4
issues, or are not considered suitable for -stable backporting. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZNad/gAKCRDdBJ7gKXxA jmw6AP9u6k8XcS8ec3/u0IUEuh7ckHx5Vvjfmo5YgWlIJDeWegD9G2fh3ZJgcjMO jMssklfXmP+QSijCIxUva1TlzwtPDAQ= =MqiN -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2023-08-11-13-44' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "14 hotfixes. 11 of these are cc:stable and the remainder address post-6.4 issues, or are not considered suitable for -stable backporting" * tag 'mm-hotfixes-stable-2023-08-11-13-44' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm/damon/core: initialize damo_filter->list from damos_new_filter() nilfs2: fix use-after-free of nilfs_root in dirtying inodes via iput selftests: cgroup: fix test_kmem_basic false positives fs/proc/kcore: reinstate bounce buffer for KCORE_TEXT regions MAINTAINERS: add maple tree mailing list mm: compaction: fix endless looping over same migrate block selftests: mm: ksm: fix incorrect evaluation of parameter hugetlb: do not clear hugetlb dtor until allocating vmemmap mm: memory-failure: avoid false hwpoison page mapped error info mm: memory-failure: fix potential unexpected return value from unpoison_memory() mm/swapfile: fix wrong swap entry type for hwpoisoned swapcache page radix tree test suite: fix incorrect allocation size for pthreads crypto, cifs: fix error handling in extract_iter_to_sg() zsmalloc: fix races between modifications of fullness and isolated |
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|
Mark O'Donovan
|
9e47a758b7 |
crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui()
During NVMeTCP Authentication a controller can trigger a kernel oops by specifying the 8192 bit Diffie Hellman group and passing a correctly sized, but zeroed Diffie Hellamn value. mpi_cmp_ui() was detecting this if the second parameter was 0, but 1 is passed from dh_is_pubkey_valid(). This causes the null pointer u->d to be dereferenced towards the end of mpi_cmp_ui() Signed-off-by: Mark O'Donovan <shiftee@posteo.net> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Herbert Xu
|
2a598d0b28 |
crypto: lib - Move mpi into lib/crypto
As lib/mpi is mostly used by crypto code, move it under lib/crypto so that patches touching it get directed to the right mailing list. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Reviewed-by: Mimi Zohar <zohar@linux.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Jakub Kicinski
|
4d016ae42e |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts. Adjacent changes: drivers/net/ethernet/intel/igc/igc_main.c |
||
|
Janusz Krzysztofik
|
b67abaad4d |
kunit: Allow kunit test modules to use test filtering
External tools, e.g., Intel GPU tools (IGT), support execution of
individual selftests provided by kernel modules. That could be also
applicable to kunit test modules if they provided test filtering. But
test filtering is now possible only when kunit code is built into the
kernel. Moreover, a filter can be specified only at boot time, then
reboot is required each time a different filter is needed.
Build the test filtering code also when kunit is configured as a module,
expose test filtering functions to other kunit source files, and use them
in kunit module notifier callback functions. Userspace can then reload
the kunit module with a value of the filter_glob parameter tuned to a
specific kunit test module every time it wants to limit the scope of tests
executed on that module load. Make the kunit.filter* parameters visible
in sysfs for user convenience.
v5: Refresh on tpp of attributes filtering fix
v4: Refresh on top of newly applied attributes patches and changes
introdced by new versions of other patches submitted in series with
this one.
v3: Fix CONFIG_GLOB, required by filtering functions, not selected when
building as a module (lkp@intel.com).
v2: Fix new name of a structure moved to kunit namespace not updated
across all uses (lkp@intel.com).
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
|
||
|
Janusz Krzysztofik
|
18258c60f8 |
kunit: Make 'list' action available to kunit test modules
Results from kunit tests reported via dmesg may be interleaved with other
kernel messages. When parsing dmesg for modular kunit results in real
time, external tools, e.g., Intel GPU tools (IGT), may want to insert
their own test name markers into dmesg at the start of each test, before
any kernel message related to that test appears there, so existing upper
level test result parsers have no doubt which test to blame for a specific
kernel message. Unfortunately, kunit reports names of tests only at their
completion (with the exeption of a not standarized "# Subtest: <name>"
header above a test plan of each test suite or parametrized test).
External tools could be able to insert their own "start of the test"
markers with test names included if they new those names in advance.
Test names could be learned from a list if provided by a kunit test
module.
There exists a feature of listing kunit tests without actually executing
them, but it is now limited to configurations with the kunit module built
in and covers only built-in tests, already available at boot time.
Moreover, switching from list to normal mode requires reboot. If that
feature was also available when kunit is built as a module, userspace
could load the module with action=list parameter, load some kunit test
modules they are interested in and learn about the list of tests provided
by those modules, then unload them, reload the kunit module in normal mode
and execute the tests with their lists already known.
Extend kunit module notifier initialization callback with a processing
path for only listing the tests provided by a module if the kunit action
parameter is set to "list" or "list_attr". For user convenience, make the
kunit.action parameter visible in sysfs.
v2: Don't use a different format, use kunit_exec_list_tests() (Rae),
- refresh on top of new attributes patches, handle newly introduced
kunit.action=list_attr case (Rae).
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Rae Moar <rmoar@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
|
||
|
Janusz Krzysztofik
|
c95e7c05c1 |
kunit: Report the count of test suites in a module
According to KTAP specification[1], results should always start from a
header that provides a TAP protocol version, followed by a test plan with
a count of items to be executed. That pattern should be followed at each
nesting level. In the current implementation of the top-most, i.e., test
suite level, those rules apply only for test suites built into the kernel,
executed and reported on boot. Results submitted to dmesg from kunit test
modules loaded later are missing those top-level headers.
As a consequence, if a kunit test module provides more than one test suite
then, without the top level test plan, external tools that are parsing
dmesg for kunit test output are not able to tell how many test suites
should be expected and whether to continue parsing after complete output
from the first test suite is collected.
Submit the top-level headers also from the kunit test module notifier
initialization callback.
v3: Fix new name of a structure moved to kunit namespace not updated in
executor_test functions (lkp@intel.com).
v2: Use kunit_exec_run_tests() (Mauro, Rae), but prevent it from
emitting the headers when called on load of non-test modules.
[1] https://docs.kernel.org/dev-tools/ktap.html#
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Rae Moar <rmoar@google.com>
Reviewed-by: Rae Moar <rmoar@google.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
|
||
|
Linus Torvalds
|
14f9643dc9 |
workqueue: Fixes for v6.5-rc5
Two commits: * The recently added cpu_intensive auto detection and warning mechanism was spuriously triggered on slow CPUs. While not causing serious issues, it's still a nuisance and can cause unintended concurrency management behaviors. Relax the threshold on machines with lower BogoMIPS. While BogoMIPS is not an accurate measure of performance by most measures, we don't have to be accurate and it has rough but strong enough correlation. * A correction in Kconfig help text. -----BEGIN PGP SIGNATURE----- iIQEABYIACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCZNFMTQ4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGb+4AQCniWx3rwWWmLgviPR0AfYWbcQ8/P/qGh++fmsR tEF3sQD/bLdeWcVa1pSzXjhGtRVGsTis6oOhk81A0zIZlx0v2Qg= =sThu -----END PGP SIGNATURE----- Merge tag 'wq-for-6.5-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq Pull workqueue fixes from Tejun Heo: - The recently added cpu_intensive auto detection and warning mechanism was spuriously triggered on slow CPUs. While not causing serious issues, it's still a nuisance and can cause unintended concurrency management behaviors. Relax the threshold on machines with lower BogoMIPS. While BogoMIPS is not an accurate measure of performance by most measures, we don't have to be accurate and it has rough but strong enough correlation. - A correction in Kconfig help text * tag 'wq-for-6.5-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: Scale up wq_cpu_intensive_thresh_us if BogoMIPS is below 4000 workqueue: Fix cpu_intensive_thresh_us name in help text |
||
|
Zhen Lei
|
e2dfa1d522 |
kobject: Add helper kobj_ns_type_is_valid()
There are too many "(type > KOBJ_NS_TYPE_NONE) && (type < KOBJ_NS_TYPES)" and "(type <= KOBJ_NS_TYPE_NONE) || (type >= KOBJ_NS_TYPES)", add helper kobj_ns_type_is_valid() to eliminate duplicate code and improve readability. Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/r/20230726062508.950-1-thunder.leizhen@huaweicloud.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Andy Shevchenko
|
045ad46441 |
lib/string_helpers: Add kstrdup_and_replace() helper
Duplicate a NULL-terminated string and replace all occurrences of the old character with a new one. In other words, provide functionality of kstrdup() + strreplace(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230804143910.15504-2-andriy.shevchenko@linux.intel.com Signed-off-by: Stephen Boyd <sboyd@kernel.org> |
||
|
David Howells
|
f443fd5af5 |
crypto, cifs: fix error handling in extract_iter_to_sg()
Fix error handling in extract_iter_to_sg(). Pages need to be unpinned, not
put in extract_user_to_sg() when handling IOVEC/UBUF sources.
The bug may result in a warning like the following:
WARNING: CPU: 1 PID: 20384 at mm/gup.c:229 __lse_atomic_add arch/arm64/include/asm/atomic_lse.h:27 [inline]
WARNING: CPU: 1 PID: 20384 at mm/gup.c:229 arch_atomic_add arch/arm64/include/asm/atomic.h:28 [inline]
WARNING: CPU: 1 PID: 20384 at mm/gup.c:229 raw_atomic_add include/linux/atomic/atomic-arch-fallback.h:537 [inline]
WARNING: CPU: 1 PID: 20384 at mm/gup.c:229 atomic_add include/linux/atomic/atomic-instrumented.h:105 [inline]
WARNING: CPU: 1 PID: 20384 at mm/gup.c:229 try_grab_page+0x108/0x160 mm/gup.c:252
...
pc : try_grab_page+0x108/0x160 mm/gup.c:229
lr : follow_page_pte+0x174/0x3e4 mm/gup.c:651
...
Call trace:
__lse_atomic_add arch/arm64/include/asm/atomic_lse.h:27 [inline]
arch_atomic_add arch/arm64/include/asm/atomic.h:28 [inline]
raw_atomic_add include/linux/atomic/atomic-arch-fallback.h:537 [inline]
atomic_add include/linux/atomic/atomic-instrumented.h:105 [inline]
try_grab_page+0x108/0x160 mm/gup.c:252
follow_pmd_mask mm/gup.c:734 [inline]
follow_pud_mask mm/gup.c:765 [inline]
follow_p4d_mask mm/gup.c:782 [inline]
follow_page_mask+0x12c/0x2e4 mm/gup.c:839
__get_user_pages+0x174/0x30c mm/gup.c:1217
__get_user_pages_locked mm/gup.c:1448 [inline]
__gup_longterm_locked+0x94/0x8f4 mm/gup.c:2142
internal_get_user_pages_fast+0x970/0xb60 mm/gup.c:3140
pin_user_pages_fast+0x4c/0x60 mm/gup.c:3246
iov_iter_extract_user_pages lib/iov_iter.c:1768 [inline]
iov_iter_extract_pages+0xc8/0x54c lib/iov_iter.c:1831
extract_user_to_sg lib/scatterlist.c:1123 [inline]
extract_iter_to_sg lib/scatterlist.c:1349 [inline]
extract_iter_to_sg+0x26c/0x6fc lib/scatterlist.c:1339
hash_sendmsg+0xc0/0x43c crypto/algif_hash.c:117
sock_sendmsg_nosec net/socket.c:725 [inline]
sock_sendmsg+0x54/0x60 net/socket.c:748
____sys_sendmsg+0x270/0x2ac net/socket.c:2494
___sys_sendmsg+0x80/0xdc net/socket.c:2548
__sys_sendmsg+0x68/0xc4 net/socket.c:2577
__do_sys_sendmsg net/socket.c:2586 [inline]
__se_sys_sendmsg net/socket.c:2584 [inline]
__arm64_sys_sendmsg+0x24/0x30 net/socket.c:2584
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:52
el0_svc_common.constprop.0+0x44/0xe4 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x38/0xa4 arch/arm64/kernel/syscall.c:191
el0_svc+0x2c/0xb0 arch/arm64/kernel/entry-common.c:647
el0t_64_sync_handler+0xc0/0xc4 arch/arm64/kernel/entry-common.c:665
el0t_64_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:591
Link: https://lkml.kernel.org/r/20571.1690369076@warthog.procyon.org.uk
Fixes:
|
||
|
Rae Moar
|
1c9fd080df |
kunit: fix uninitialized variables bug in attributes filtering
Fix smatch warnings regarding uninitialized variables in the filtering
patch of the new KUnit Attributes feature.
Fixes:
|
||
|
Ruan Jinjie
|
abbf73816b |
kunit: fix possible memory leak in kunit_filter_suites()
Inject fault while probing drm_kunit_helpers.ko, if one of
kunit_next_attr_filter(), kunit_filter_glob_tests() and
kunit_filter_attr_tests() fails, parsed_filters,
parsed_glob.suite_glob/test_glob alloced in
kunit_parse_glob_filter() is leaked.
And the filtered_suite->test_cases alloced in kunit_filter_glob_tests()
or kunit_filter_attr_tests() may also be leaked.
unreferenced object 0xff110001067e4800 (size 1024):
comm "kunit_try_catch", pid 96, jiffies 4294671796 (age 763.547s)
hex dump (first 32 bytes):
73 75 69 74 65 32 00 00 00 00 00 00 00 00 00 00 suite2..........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<00000000116e8eba>] __kmalloc_node_track_caller+0x4e/0x140
[<00000000e2f9cce9>] kmemdup+0x2c/0x60
[<000000002a36710b>] kunit_filter_suites+0x3e4/0xa50
[<0000000045779fb9>] filter_suites_test+0x1b7/0x440
[<00000000cd1104a7>] kunit_try_run_case+0x119/0x270
[<00000000c654c917>] kunit_generic_run_threadfn_adapter+0x4e/0xa0
[<00000000d195ac13>] kthread+0x2c7/0x3c0
[<00000000b79c1ee9>] ret_from_fork+0x2c/0x70
[<000000001167f7e6>] ret_from_fork_asm+0x1b/0x30
unreferenced object 0xff11000105d79b00 (size 192):
comm "kunit_try_catch", pid 96, jiffies 4294671796 (age 763.547s)
hex dump (first 32 bytes):
f0 e1 5a 88 ff ff ff ff 60 59 bb 8a ff ff ff ff ..Z.....`Y......
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000000d6e4891>] __kmalloc+0x4d/0x140
[<000000006afe50bd>] kunit_filter_suites+0x424/0xa50
[<0000000045779fb9>] filter_suites_test+0x1b7/0x440
[<00000000cd1104a7>] kunit_try_run_case+0x119/0x270
[<00000000c654c917>] kunit_generic_run_threadfn_adapter+0x4e/0xa0
[<00000000d195ac13>] kthread+0x2c7/0x3c0
[<00000000b79c1ee9>] ret_from_fork+0x2c/0x70
[<000000001167f7e6>] ret_from_fork_asm+0x1b/0x30
unreferenced object 0xff110001067e6000 (size 1024):
comm "kunit_try_catch", pid 98, jiffies 4294671798 (age 763.545s)
hex dump (first 32 bytes):
73 75 69 74 65 32 00 00 00 00 00 00 00 00 00 00 suite2..........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<00000000116e8eba>] __kmalloc_node_track_caller+0x4e/0x140
[<00000000e2f9cce9>] kmemdup+0x2c/0x60
[<000000002a36710b>] kunit_filter_suites+0x3e4/0xa50
[<00000000f452f130>] filter_suites_test_glob_test+0x1b7/0x660
[<00000000cd1104a7>] kunit_try_run_case+0x119/0x270
[<00000000c654c917>] kunit_generic_run_threadfn_adapter+0x4e/0xa0
[<00000000d195ac13>] kthread+0x2c7/0x3c0
[<00000000b79c1ee9>] ret_from_fork+0x2c/0x70
[<000000001167f7e6>] ret_from_fork_asm+0x1b/0x30
unreferenced object 0xff11000103f3a800 (size 96):
comm "kunit_try_catch", pid 98, jiffies 4294671798 (age 763.545s)
hex dump (first 32 bytes):
f0 e1 5a 88 ff ff ff ff 40 39 bb 8a ff ff ff ff ..Z.....@9......
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000000d6e4891>] __kmalloc+0x4d/0x140
[<000000006afe50bd>] kunit_filter_suites+0x424/0xa50
[<00000000f452f130>] filter_suites_test_glob_test+0x1b7/0x660
[<00000000cd1104a7>] kunit_try_run_case+0x119/0x270
[<00000000c654c917>] kunit_generic_run_threadfn_adapter+0x4e/0xa0
[<00000000d195ac13>] kthread+0x2c7/0x3c0
[<00000000b79c1ee9>] ret_from_fork+0x2c/0x70
[<000000001167f7e6>] ret_from_fork_asm+0x1b/0x30
unreferenced object 0xff11000101a72ac0 (size 16):
comm "kunit_try_catch", pid 104, jiffies 4294671814 (age 763.529s)
hex dump (first 16 bytes):
00 00 00 00 00 00 00 00 e0 2a a7 01 01 00 11 ff .........*......
backtrace:
[<000000000d6e4891>] __kmalloc+0x4d/0x140
[<00000000c7b724e7>] kunit_filter_suites+0x108/0xa50
[<00000000bad5427d>] filter_attr_test+0x1e9/0x6a0
[<00000000cd1104a7>] kunit_try_run_case+0x119/0x270
[<00000000c654c917>] kunit_generic_run_threadfn_adapter+0x4e/0xa0
[<00000000d195ac13>] kthread+0x2c7/0x3c0
[<00000000b79c1ee9>] ret_from_fork+0x2c/0x70
[<000000001167f7e6>] ret_from_fork_asm+0x1b/0x30
unreferenced object 0xff11000103caf880 (size 32):
comm "kunit_try_catch", pid 104, jiffies 4294671814 (age 763.547s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000000d6e4891>] __kmalloc+0x4d/0x140
[<00000000c47b0f75>] kunit_filter_suites+0x189/0xa50
[<00000000bad5427d>] filter_attr_test+0x1e9/0x6a0
[<00000000cd1104a7>] kunit_try_run_case+0x119/0x270
[<00000000c654c917>] kunit_generic_run_threadfn_adapter+0x4e/0xa0
[<00000000d195ac13>] kthread+0x2c7/0x3c0
[<00000000b79c1ee9>] ret_from_fork+0x2c/0x70
[<000000001167f7e6>] ret_from_fork_asm+0x1b/0x30
unreferenced object 0xff11000101a72ae0 (size 16):
comm "kunit_try_catch", pid 106, jiffies 4294671823 (age 763.538s)
hex dump (first 16 bytes):
00 00 00 00 00 00 00 00 00 2b a7 01 01 00 11 ff .........+......
backtrace:
[<000000000d6e4891>] __kmalloc+0x4d/0x140
[<00000000c7b724e7>] kunit_filter_suites+0x108/0xa50
[<0000000096255c51>] filter_attr_empty_test+0x1b0/0x310
[<00000000cd1104a7>] kunit_try_run_case+0x119/0x270
[<00000000c654c917>] kunit_generic_run_threadfn_adapter+0x4e/0xa0
[<00000000d195ac13>] kthread+0x2c7/0x3c0
[<00000000b79c1ee9>] ret_from_fork+0x2c/0x70
[<000000001167f7e6>] ret_from_fork_asm+0x1b/0x30
unreferenced object 0xff11000103caf9c0 (size 32):
comm "kunit_try_catch", pid 106, jiffies 4294671823 (age 763.538s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000000d6e4891>] __kmalloc+0x4d/0x140
[<00000000c47b0f75>] kunit_filter_suites+0x189/0xa50
[<0000000096255c51>] filter_attr_empty_test+0x1b0/0x310
[<00000000cd1104a7>] kunit_try_run_case+0x119/0x270
[<00000000c654c917>] kunit_generic_run_threadfn_adapter+0x4e/0xa0
[<00000000d195ac13>] kthread+0x2c7/0x3c0
[<00000000b79c1ee9>] ret_from_fork+0x2c/0x70
[<000000001167f7e6>] ret_from_fork_asm+0x1b/0x30
unreferenced object 0xff11000101a72b00 (size 16):
comm "kunit_try_catch", pid 108, jiffies 4294671832 (age 763.529s)
hex dump (first 16 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<000000000d6e4891>] __kmalloc+0x4d/0x140
[<00000000c47b0f75>] kunit_filter_suites+0x189/0xa50
[<00000000881258cc>] filter_attr_skip_test+0x148/0x770
[<00000000cd1104a7>] kunit_try_run_case+0x119/0x270
[<00000000c654c917>] kunit_generic_run_threadfn_adapter+0x4e/0xa0
[<00000000d195ac13>] kthread+0x2c7/0x3c0
[<00000000b79c1ee9>] ret_from_fork+0x2c/0x70
[<000000001167f7e6>] ret_from_fork_asm+0x1b/0x30
Fixes:
|
||
|
Thomas Weißschuh
|
31ed379b7c |
dyndbg: add source filename to prefix
Printing the line number without the file is of limited usefulness.
Knowing the filename also makes it also easier to relate the logged
information to the controlfile.
Example:
# modprobe test_dynamic_debug
# echo 'file test_dynamic_debug.c =pfsl' > /proc/dynamic_debug/control
# echo 1 > /sys/module/test_dynamic_debug/parameters/do_prints
# dmesg | tail -2
[ 71.802212] do_cats:lib/test_dynamic_debug.c:103: test_dd: doing categories
[ 71.802227] do_levels:lib/test_dynamic_debug.c:123: test_dd: doing levels
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Jim Cromie <jim.cromie@gmail.com>
Acked-by: Jason Baron <jbaron@akamai.com>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20230709-dyndbg-filename-v2-3-fd83beef0925@weissschuh.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||
|
Thomas Weißschuh
|
3bdaf73905 |
dyndbg: increase PREFIX_SIZE to 128
A follow-up patch will add the possibility to print the filename as part of the prefix. Increase the maximum prefix size to accommodate this. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Link: https://lore.kernel.org/r/20230709-dyndbg-filename-v2-2-fd83beef0925@weissschuh.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Thomas Weißschuh
|
882f7a64ed |
dyndbg: constify opt_array
It is never modified, so mark it const. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Link: https://lore.kernel.org/r/20230709-dyndbg-filename-v2-1-fd83beef0925@weissschuh.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Jakub Kicinski
|
35b1b1fd96 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: net/dsa/port.c |
||
|
Linus Torvalds
|
a4e98a30bc |
bitmap fixes for v6.5
- Fix for bitmap documentation; - Fix for kernel build under certain configuration. -----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEEi8GdvG6xMhdgpu/4sUSA/TofvsgFAmTIHIcACgkQsUSA/Tof vsjjWQv/cRLlsolIBc3gmV6YGYZuXc99SGALLp+2BjGz63GQ1YNaIPPHZWFNeH7f fATEZCXUssgbRRSOQWAqt+9Zbzkz85nU/L/WDC63/eMaBNL5bueYKbRnivixb6CK 0N7ruQUxW9D+n/ioXuvNecRTjOI8zPKDrcXYTVbcWcTd2cUd+VsrXnhBibcsnkiF /d/svVVO7S/wNjHbOTm9Miru34CP5KxBJMrgCALJy9wS4NY9NohnoACxli3Igp8/ JGYBg5JuWIk+Adw7rGRPCsJUuAgyNltb5BlP/JrjDW0Ra6SntLafE+kcwQu2lIwi WPoKqZz+CdHGVP8hkbsDxg+UCR+gkUm/RoImcYLhl0RvHF6eaDckUBWvU9DUi41N VRvB+yjVTvubM4rbrbsSJp3vIAjLqjLlCyv6Z3XGrwl/B3TXfwpEEHfSTq0lSnnv HRNOcjZHedTT2xTljHsW7yc/xv3877h+smzXl07qMXR3Tj6kUMxGcLS9VuZwoBA4 b8nLoKm1 =5IbU -----END PGP SIGNATURE----- Merge tag 'bitmap-6.5-rc5' of https://github.com:/norov/linux Pull bitmap fixes from Yury Norov: - Fix for bitmap documentation - Fix for kernel build under certain configurations * tag 'bitmap-6.5-rc5' of https://github.com:/norov/linux: lib/bitmap: workaround const_eval test build failure cpumask: eliminate kernel-doc warnings |
||
|
Ruan Jinjie
|
5a175d369c |
kunit: fix wild-memory-access bug in kunit_filter_suites()
As for kunit_filter_suites(), When the filters arg = NULL, such as
the call of kunit_filter_suites(&suite_set, "suite2", NULL, NULL, &err)
in filter_suites_test() tese case in kunit, both filter_count and
parsed_filters will not be initialized.
So it's possible to enter kunit_filter_attr_tests(), and the use of
uninitialized parsed_filters will cause below wild-memory-access.
RIP: 0010:kunit_filter_suites+0x780/0xa40
Code: fe ff ff e8 42 87 4d ff 41 83 c6 01 49 83 c5 10 49 89 dc 44 39 74 24 50 0f 8e 81 fe ff ff e8 27 87 4d ff 4c 89 e8 48 c1 e8 03 <66> 42 83 3c 38 00 0f 85 af 01 00 00 49 8b 75 00 49 8b 55 08 4c 89
RSP: 0000:ff1100010743fc38 EFLAGS: 00010203
RAX: 03fc4400041d0ff1 RBX: ff1100010389a900 RCX: ffffffff9f940ad9
RDX: ff11000107429740 RSI: 0000000000000000 RDI: ff110001037ec920
RBP: ff1100010743fd50 R08: 0000000000000000 R09: ffe21c0020e87f1e
R10: 0000000000000003 R11: 0000000000032001 R12: ff110001037ec800
R13: 1fe2200020e87f8c R14: 0000000000000000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ff1100011b000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ff11000115201000 CR3: 0000000113066001 CR4: 0000000000771ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
<TASK>
? die_addr+0x3c/0xa0
? exc_general_protection+0x148/0x220
? asm_exc_general_protection+0x26/0x30
? kunit_filter_suites+0x779/0xa40
? kunit_filter_suites+0x780/0xa40
? kunit_filter_suites+0x779/0xa40
? __pfx_kunit_filter_suites+0x10/0x10
? __pfx_kfree+0x10/0x10
? kunit_add_action_or_reset+0x3d/0x50
filter_suites_test+0x1b7/0x440
? __pfx_filter_suites_test+0x10/0x10
? __pfx___schedule+0x10/0x10
? try_to_wake_up+0xa8e/0x1210
? _raw_spin_lock_irqsave+0x86/0xe0
? __pfx__raw_spin_lock_irqsave+0x10/0x10
? set_cpus_allowed_ptr+0x7c/0xb0
kunit_try_run_case+0x119/0x270
? __kthread_parkme+0xdc/0x160
? __pfx_kunit_try_run_case+0x10/0x10
kunit_generic_run_threadfn_adapter+0x4e/0xa0
? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10
kthread+0x2c7/0x3c0
? __pfx_kthread+0x10/0x10
ret_from_fork+0x2c/0x70
? __pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1b/0x30
</TASK>
Modules linked in:
Dumping ftrace buffer:
(ftrace buffer empty)
---[ end trace 0000000000000000 ]---
RIP: 0010:kunit_filter_suites+0x780/0xa40
Code: fe ff ff e8 42 87 4d ff 41 83 c6 01 49 83 c5 10 49 89 dc 44 39 74 24 50 0f 8e 81 fe ff ff e8 27 87 4d ff 4c 89 e8 48 c1 e8 03 <66> 42 83 3c 38 00 0f 85 af 01 00 00 49 8b 75 00 49 8b 55 08 4c 89
RSP: 0000:ff1100010743fc38 EFLAGS: 00010203
RAX: 03fc4400041d0ff1 RBX: ff1100010389a900 RCX: ffffffff9f940ad9
RDX: ff11000107429740 RSI: 0000000000000000 RDI: ff110001037ec920
RBP: ff1100010743fd50 R08: 0000000000000000 R09: ffe21c0020e87f1e
R10: 0000000000000003 R11: 0000000000032001 R12: ff110001037ec800
R13: 1fe2200020e87f8c R14: 0000000000000000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ff1100011b000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ff11000115201000 CR3: 0000000113066001 CR4: 0000000000771ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
(ftrace buffer empty)
Kernel Offset: 0x1da00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Rebooting in 1 seconds..
Fixes:
|
||
|
Mark Brown
|
2cddb06cb0 |
Linux 6.5-rc4
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||
|
Linus Torvalds
|
cf270e7b75 |
Char driver and Documentation fixes for 6.5-rc4
Here is a char driver fix and some documentation updates for 6.5-rc4
that contain the following changes:
- sram/genalloc bugfix for reported problem
- security-bugs.rst update based on recent discussions
- embargoed-hardware-issues minor cleanups and then partial revert for
the project/company lists
All of these have been in linux-next for a while with no reported
problems, and the documentation updates have all been reviewed by the
relevant developers.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char driver and Documentation fixes from Greg KH:
"Here is a char driver fix and some documentation updates for 6.5-rc4
that contain the following changes:
- sram/genalloc bugfix for reported problem
- security-bugs.rst update based on recent discussions
- embargoed-hardware-issues minor cleanups and then partial revert
for the project/company lists
All of these have been in linux-next for a while with no reported
problems, and the documentation updates have all been reviewed by the
relevant developers"
* tag 'char-misc-6.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
misc/genalloc: Name subpools by of_node_full_name()
Documentation: embargoed-hardware-issues.rst: add AMD to the list
Documentation: embargoed-hardware-issues.rst: clean out empty and unused entries
Documentation: security-bugs.rst: clarify CVE handling
Documentation: security-bugs.rst: update preferences when dealing with the linux-distros group
|
||
|
Matthew Wilcox (Oracle)
|
cbc0285433 |
XArray: Do not return sibling entries from xa_load()
It is possible for xa_load() to observe a sibling entry pointing to
another sibling entry. An example:
Thread A: Thread B:
xa_store_range(xa, entry, 188, 191, gfp);
xa_load(xa, 191);
entry = xa_entry(xa, node, 63);
[entry is a sibling of 188]
xa_store_range(xa, entry, 184, 191, gfp);
if (xa_is_sibling(entry))
offset = xa_to_sibling(entry);
entry = xa_entry(xas->xa, node, offset);
[entry is now a sibling of 184]
It is sufficient to go around this loop until we hit a non-sibling entry.
Sibling entries always point earlier in the node, so we are guaranteed
to terminate this search.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Fixes:
|
||
|
Jakub Kicinski
|
5908a4c47c |
netfilter net-next pull request 2023-07-27
-----BEGIN PGP SIGNATURE----- iQJBBAABCAArFiEEgKkgxbID4Gn1hq6fcJGo2a1f9gAFAmTCcgkNHGZ3QHN0cmxl bi5kZQAKCRBwkajZrV/2AJmMD/9IPWnzSNLUgoAhSo0h2OkCKl2iIdRnkrPrruhE Su8bD8ohmU100iN1DMXT2a7C9o0BTog4EB7WtF21z+06dUhROiZizrSt8bTk/rRi 0+Sm9xlDAdl3CZcU8fnVjwf6PLYgUv5zVjcQc4Ggf15MwEIdpviKCps2bbBtrozF PJEK6+UwTU6+z4GSTc957nhFHstEcwktyxoaAote98CD78G2YCQT5yVbfctHgRm0 9qovT8S/zZmqHvqvUfrqJd+N5V/+40O7ZuFls93kYxK9Bttx9wRwEqALPldxXudU o0kG4QZ8NAwiIVsGqPwKu/cKi9PF0z/PUXYgVdnkKK+XofBDHbHyfR+BJO1ejOdX +ea9AoQ6lD6NVmvX01+lF9OI4D1zgc6pLGyjSsyVgv3x0iKJeZ8QOgb0DTGFiG1U MnFIeckedrh/dt3NXLG/blZvuAzhofHqEhH/DlvbI/QBtN2zEgIMJKxRfBAMs3OO WAIlaHASQFVbyrHOr/X3FoNDTsvZyrTppo9WwJVTj9F41lYXzWoiBY+nVj2brGDR SMW1M13sufRBQlk0aTpPYPvcS5FhsMf6ggxygi2rNxX5/AdFE02nnEU9ybpHAqcy NiZ8kCxJ2J9+aCj7yvJ7QQcAD7l2tAIeAZCKSlKteigqTI0PWoTUc0IYPT85URLm cy/l4A== =fgLz -----END PGP SIGNATURE----- Merge tag 'nf-next-23-07-27' of https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next Florian Westphal says: ==================== netfilter updates for net-next 1. silence a harmless warning for CONFIG_NF_CONNTRACK_PROCFS=n builds, from Zhu Wang. 2, 3: Allow NLA_POLICY_MASK to be used with BE16/BE32 types, and replace a few manual checks with nla_policy based one in nf_tables, from myself. 4: cleanup in ctnetlink to validate while parsing rather than using two steps, from Lin Ma. 5: refactor boyer-moore textsearch by moving a small chunk to a helper function, rom Jeremy Sowden. * tag 'nf-next-23-07-27' of https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf-next: lib/ts_bm: add helper to reduce indentation and improve readability netfilter: conntrack: validate cta_ip via parsing netfilter: nf_tables: use NLA_POLICY_MASK to test for valid flag options netlink: allow be16 and be32 types in all uint policy checks nf_conntrack: fix -Wunused-const-variable= ==================== Link: https://lore.kernel.org/r/20230727133604.8275-1-fw@strlen.de Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jakub Kicinski
|
014acf2668 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jeremy Sowden
|
86e9c9aa23 |
lib/ts_bm: add helper to reduce indentation and improve readability
The flow-control of `bm_find` is very deeply nested with a conditional comparing a ternary expression against the pattern inside a for-loop inside a while-loop inside a for-loop. Move the inner for-loop into a helper function to reduce the amount of indentation and make the code easier to read. Fix indentation and trailing white-space in preceding debug logging statement. Signed-off-by: Jeremy Sowden <jeremy@azazel.net> Signed-off-by: Florian Westphal <fw@strlen.de> |
||
|
Florian Westphal
|
5fac9b7c16 |
netlink: allow be16 and be32 types in all uint policy checks
__NLA_IS_BEINT_TYPE(tp) isn't useful. NLA_BE16/32 are identical to NLA_U16/32, the only difference is that it tells the netlink validation functions that byteorder conversion might be needed before comparing the value to the policy min/max ones. After this change all policy macros that can be used with UINT types, such as NLA_POLICY_MASK() can also be used with NLA_BE16/32. This will be used to validate nf_tables flag attributes which are in bigendian byte order. Signed-off-by: Florian Westphal <fw@strlen.de> |
||
|
Rae Moar
|
76066f93f1 |
kunit: add tests for filtering attributes
Add four tests to executor_test.c to test behavior of filtering attributes. - parse_filter_attr_test - to test the parsing of inputted filters - filter_attr_test - to test the filtering procedure on attributes - filter_attr_empty_test - to test the behavior when all tests are filtered out - filter_attr_skip_test - to test the configurable filter_action=skip option Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Rae Moar <rmoar@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Rae Moar
|
d055c6a2cc |
kunit: memcpy: Mark tests as slow using test attributes
Mark slow memcpy KUnit tests using test attributes. Tests marked as slow are as follows: memcpy_large_test, memmove_test, memmove_large_test, and memmove_overlap_test. These tests were the slowest of the memcpy tests and relatively slower to most other KUnit tests. Most of these tests are already skipped when CONFIG_MEMCPY_SLOW_KUNIT_TEST is not enabled. These tests can now be filtered using the KUnit test attribute filtering feature. Example: --filter "speed>slow". This will run only the tests that have speeds faster than slow. The slow attribute will also be outputted in KTAP. Note: This patch is intended to replace the use of CONFIG_MEMCPY_SLOW_KUNIT_TEST and to potentially deprecate this feature. This patch does not remove the config option but does add a note to the config definition commenting on this future shift. Reviewed-by: David Gow <davidgow@google.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Rae Moar <rmoar@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Rae Moar
|
529534e8cb |
kunit: Add ability to filter attributes
Add filtering of test attributes. Users can filter tests using the module_param called "filter". Filters are imputed in the format: <attribute_name><operation><value> Example: kunit.filter="speed>slow" Operations include: >, <, >=, <=, !=, and =. These operations will act the same for attributes of the same type but may not between types. Note multiple filters can be inputted by separating them with a comma. Example: kunit.filter="speed=slow, module!=example" Since both suites and test cases can have attributes, there may be conflicts. The process of filtering follows these rules: - Filtering always operates at a per-test level. - If a test has an attribute set, then the test's value is filtered on. - Otherwise, the value falls back to the suite's value. - If neither are set, the attribute has a global "default" value, which is used. Filtered tests will not be run or show in output. The tests can instead be skipped using the configurable option "kunit.filter_action=skip". Note the default settings for running tests remains unfiltered. Finally, add "filter" methods for the speed and module attributes to parse and compare attribute values. Note this filtering functionality will be added to kunit.py in the next patch. Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Rae Moar <rmoar@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Rae Moar
|
a00a727091 |
kunit: Add module attribute
Add module attribute to the test attribute API. This attribute stores the module name associated with the test using KBUILD_MODNAME. The name of a test suite and the module name often do not match. A reference to the module name associated with the suite could be extremely helpful in running tests as modules without needing to check the codebase. This attribute will be printed for each suite. Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Rae Moar <rmoar@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Rae Moar
|
02c2d0c2a8 |
kunit: Add speed attribute
Add speed attribute to the test attribute API. This attribute will allow users to mark tests with a category of speed. Currently the categories of speed proposed are: normal, slow, and very_slow (outlined in enum kunit_speed). These are outlined in the enum kunit_speed. The assumed default speed for tests is "normal". This indicates that the test takes a relatively trivial amount of time (less than 1 second), regardless of the machine it is running on. Any test slower than this could be marked as "slow" or "very_slow". Add the macro KUNIT_CASE_SLOW to set a test as slow, as this is likely a common use of the attributes API. Add an example of marking a slow test to kunit-example-test.c. Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Rae Moar <rmoar@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Rae Moar
|
39e92cb1e4 |
kunit: Add test attributes API structure
Add the basic structure of the test attribute API to KUnit, which can be used to save and access test associated data. Add attributes.c and attributes.h to hold associated structs and functions for the API. Create a struct that holds a variety of associated helper functions for each test attribute. These helper functions will be used to get the attribute value, convert the value to a string, and filter based on the value. This struct is flexible by design to allow for attributes of numerous types and contexts. Add a method to print test attributes in the format of "# [<test_name if not suite>.]<attribute_name>: <attribute_value>". Example for a suite: "# speed: slow" Example for a test case: "# test_case.speed: very_slow" Use this method to report attributes in the KTAP output (KTAP spec: https://docs.kernel.org/dev-tools/ktap.html) and _list_tests output when kernel's new kunit.action=list_attr option is used. Note this is derivative of the kunit.action=list option. In test.h, add fields and associated helper functions to test cases and suites to hold user-inputted test attributes. Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Rae Moar <rmoar@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Boqun Feng
|
f66c538098 |
lockdep/selftests: Use SBRM APIs for wait context tests
The "__cleanup__" attribute is already used for wait context tests, so using it for locking tests has already been proven working. Now since SBRM APIs are merged, let's use these APIs instead of a local guard framework. This also helps testing SBRM APIs. Note that originally the tests don't rely on the cleanup ordering of two variables in the same scope, but since now it's something we'd like to assume and rely on[1], drop the extra scope in inner_in_outer() function. Again this gives us another opportunity to test the compiler behavior. [1]: https://lore.kernel.org/lkml/CAHk-=whEsr6fuVSdsoNPokLR2fZiGuo_hCLyrS-LCw7hT_N7cQ@mail.gmail.com/ Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20230715235257.110325-1-boqun.feng@gmail.com |
||
|
Linus Walleij
|
f8ea950210 |
misc/genalloc: Name subpools by of_node_full_name()
A previous commit tried to come up with more generic subpool
names, but this isn't quite working: the node name was used
elsewhere to match pools to consumers which regressed the
nVidia Tegra 2/3 video decoder.
Revert back to an earlier approach using of_node_full_name()
instead of just the name to make sure the pool name is more
unique, and change both sites using this in the kernel.
It is not perfect since two SRAM nodes could have the same
subpool name but it makes the situation better than before.
Reported-by: Dmitry Osipenko <digetx@gmail.com>
Fixes:
|
||
|
Matthew Wilcox (Oracle)
|
1b0306981e |
iov_iter: Add copy_folio_from_iter_atomic()
Add a folio wrapper around copy_page_from_iter_atomic(). Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Darrick J. Wong <djwong@kernel.org> |
||
|
Matthew Wilcox (Oracle)
|
908a1ad894 |
iov_iter: Handle compound highmem pages in copy_page_from_iter_atomic()
copy_page_from_iter_atomic() already handles !highmem compound pages correctly, but if we are passed a highmem compound page, each base page needs to be mapped & unmapped individually. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Kent Overstreet <kent.overstreet@linux.dev> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Tested-by: Kent Overstreet <kent.overstreet@linux.dev> |
||
|
Matthew Wilcox (Oracle)
|
f7f9a0c873 |
iov_iter: Map the page later in copy_page_from_iter_atomic()
Remove a couple of calls to kunmap_atomic() in the rare error cases. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Kent Overstreet <kent.overstreet@linux.dev> Reviewed-by: Darrick J. Wong <djwong@kernel.org> |
||
|
Mark Brown
|
de1b43a57a |
Linux 6.5-rc3
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||
|
Linus Torvalds
|
f036d67c02 |
block-6.5-2023-07-21
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||
|
David Jeffery
|
106397376c |
sbitmap: fix batching wakeup
Current code supposes that it is enough to provide forward progress by just waking up one wait queue after one completion batch is done. Unfortunately this way isn't enough, cause waiter can be added to wait queue just after it is woken up. Follows one example(64 depth, wake_batch is 8) 1) all 64 tags are active 2) in each wait queue, there is only one single waiter 3) each time one completion batch(8 completions) wakes up just one waiter in each wait queue, then immediately one new sleeper is added to this wait queue 4) after 64 completions, 8 waiters are wakeup, and there are still 8 waiters in each wait queue 5) after another 8 active tags are completed, only one waiter can be wakeup, and the other 7 can't be waken up anymore. Turns out it isn't easy to fix this problem, so simply wakeup enough waiters for single batch. Cc: Kemeng Shi <shikemeng@huaweicloud.com> Cc: Chengming Zhou <zhouchengming@bytedance.com> Cc: Jan Kara <jack@suse.cz> Signed-off-by: David Jeffery <djeffery@redhat.com> Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de> Reviewed-by: Keith Busch <kbusch@kernel.org> Link: https://lore.kernel.org/r/20230721095715.232728-1-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Jakub Kicinski
|
59be3baa8d |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. No conflicts or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Miguel Ojeda
|
a66d733da8 |
rust: support running Rust documentation tests as KUnit ones
Rust has documentation tests: these are typically examples of
usage of any item (e.g. function, struct, module...).
They are very convenient because they are just written
alongside the documentation. For instance:
/// Sums two numbers.
///
/// ```
/// assert_eq!(mymod::f(10, 20), 30);
/// ```
pub fn f(a: i32, b: i32) -> i32 {
a + b
}
In userspace, the tests are collected and run via `rustdoc`.
Using the tool as-is would be useful already, since it allows
to compile-test most tests (thus enforcing they are kept
in sync with the code they document) and run those that do not
depend on in-kernel APIs.
However, by transforming the tests into a KUnit test suite,
they can also be run inside the kernel. Moreover, the tests
get to be compiled as other Rust kernel objects instead of
targeting userspace.
On top of that, the integration with KUnit means the Rust
support gets to reuse the existing testing facilities. For
instance, the kernel log would look like:
KTAP version 1
1..1
KTAP version 1
# Subtest: rust_doctests_kernel
1..59
# rust_doctest_kernel_build_assert_rs_0.location: rust/kernel/build_assert.rs:13
ok 1 rust_doctest_kernel_build_assert_rs_0
# rust_doctest_kernel_build_assert_rs_1.location: rust/kernel/build_assert.rs:56
ok 2 rust_doctest_kernel_build_assert_rs_1
# rust_doctest_kernel_init_rs_0.location: rust/kernel/init.rs:122
ok 3 rust_doctest_kernel_init_rs_0
...
# rust_doctest_kernel_types_rs_2.location: rust/kernel/types.rs:150
ok 59 rust_doctest_kernel_types_rs_2
# rust_doctests_kernel: pass:59 fail:0 skip:0 total:59
# Totals: pass:59 fail:0 skip:0 total:59
ok 1 rust_doctests_kernel
Therefore, add support for running Rust documentation tests
in KUnit. Some other notes about the current implementation
and support follow.
The transformation is performed by a couple scripts written
as Rust hostprogs.
Tests using the `?` operator are also supported as usual, e.g.:
/// ```
/// # use kernel::{spawn_work_item, workqueue};
/// spawn_work_item!(workqueue::system(), || pr_info!("x"))?;
/// # Ok::<(), Error>(())
/// ```
The tests are also compiled with Clippy under `CLIPPY=1`, just
like normal code, thus also benefitting from extra linting.
The names of the tests are currently automatically generated.
This allows to reduce the burden for documentation writers,
while keeping them fairly stable for bisection. This is an
improvement over the `rustdoc`-generated names, which include
the line number; but ideally we would like to get `rustdoc` to
provide the Rust item path and a number (for multiple examples
in a single documented Rust item).
In order for developers to easily see from which original line
a failed doctests came from, a KTAP diagnostic line is printed
to the log, containing the location (file and line) of the
original test (i.e. instead of the location in the generated
Rust file):
# rust_doctest_kernel_types_rs_2.location: rust/kernel/types.rs:150
This line follows the syntax for declaring test metadata in the
proposed KTAP v2 spec [1], which may be used for the proposed
KUnit test attributes API [2]. Thus hopefully this will make
migration easier later on (suggested by David [3]).
The original line in that test attribute is figured out by
providing an anchor (suggested by Boqun [4]). The original file
is found by walking the filesystem, checking directory prefixes
to reduce the amount of combinations to check, and it is only
done once per file. Ambiguities are detected and reported.
A notable difference from KUnit C tests is that the Rust tests
appear to assert using the usual `assert!` and `assert_eq!`
macros from the Rust standard library (`core`). We provide
a custom version that forwards the call to KUnit instead.
Importantly, these macros do not require passing context,
unlike the KUnit C ones (i.e. `struct kunit *`). This makes
them easier to use, and readers of the documentation do not need
to care about which testing framework is used. In addition, it
may allow us to test third-party code more easily in the future.
However, a current limitation is that KUnit does not support
assertions in other tasks. Thus we presently simply print an
error to the kernel log if an assertion actually failed. This
should be revisited to properly fail the test, perhaps saving
the context somewhere else, or letting KUnit handle it.
Link: https://lore.kernel.org/lkml/20230420205734.1288498-1-rmoar@google.com/ [1]
Link: https://lore.kernel.org/linux-kselftest/20230707210947.1208717-1-rmoar@google.com/ [2]
Link: https://lore.kernel.org/rust-for-linux/CABVgOSkOLO-8v6kdAGpmYnZUb+LKOX0CtYCo-Bge7r_2YTuXDQ@mail.gmail.com/ [3]
Link: https://lore.kernel.org/rust-for-linux/ZIps86MbJF%2FiGIzd@boqun-archlinux/ [4]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
|
||
|
Mark Brown
|
4619dd77e6
|
ASoC: Improve coverage in default KUnit runs
Merge series from Mark Brown <broonie@kernel.org>: We have some KUnit tests for ASoC but they're not being run as much as they should be since ASoC isn't enabled in the configs used by default with KUnit and in the case of the topology tests there is no way to enable them without enabling drivers that use them. This series provides a Kconfig option which KUnit can use directly rather than worry about drivers. Further, since KUnit is typically run in UML but ALSA prevents build with UML we need to remove that Kconfig conflict. As far as I can tell the motiviation for this is that many ALSA drivers use iomem APIs which are not available under UML and it's more trouble than it's worth to go through and add per driver dependencies. In order to avoid these issues we also provide stubs for these APIs so there are no build time issues if a driver relies on iomem but does not depend on it. With these stubs I am able to build all the sound drivers available in a UML defconfig (UML allmodconfig appears to have substantial other issues in a quick test). With this series I am able to run the topology KUnit tests as part of a kunit --alltests run. |
||
|
Linus Torvalds
|
4806364acf |
Seven hotfixes, six of which are cc:stable and one of which addresses a
post-6.5 issue. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZLboHQAKCRDdBJ7gKXxA jqwtAP4m3MQNcYzQk8qbV+EQat/csTnrefytyD0ogFRoxcMAFAD/XT784sZzn4SU s/mL1HLk1BsubT/yQmY3lISXHDPuPAo= =5W3V -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2023-07-18-12-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull hotfixes from Andrew Morton: "Seven hotfixes, six of which are cc:stable and one of which addresses a post-6.5 issue" * tag 'mm-hotfixes-stable-2023-07-18-12-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: maple_tree: fix node allocation testing on 32 bit maple_tree: fix 32 bit mas_next testing selftests/mm: mkdirty: fix incorrect position of #endif maple_tree: set the node limit when creating a new root node mm/mlock: fix vma iterator conversion of apply_vma_lock_flags() prctl: move PR_GET_AUXV out of PR_MCE_KILL selftests/mm: give scripts execute permission |
||
|
Yury Norov
|
2356d198d2 |
lib/bitmap: workaround const_eval test build failure
When building with Clang, and when KASAN and GCOV_PROFILE_ALL are both
enabled, the test fails to build [1]:
>> lib/test_bitmap.c:920:2: error: call to '__compiletime_assert_239' declared with 'error' attribute: BUILD_BUG_ON failed: !__builtin_constant_p(res)
BUILD_BUG_ON(!__builtin_constant_p(res));
^
include/linux/build_bug.h:50:2: note: expanded from macro 'BUILD_BUG_ON'
BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
^
include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^
include/linux/compiler_types.h:352:2: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
include/linux/compiler_types.h:340:2: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^
include/linux/compiler_types.h:333:4: note: expanded from macro '__compiletime_assert'
prefix ## suffix(); \
^
<scratch space>:185:1: note: expanded from here
__compiletime_assert_239
Originally it was attributed to s390, which now looks seemingly wrong. The
issue is not related to bitmap code itself, but it breaks build for a given
configuration.
Disabling the const_eval test under that config may potentially hide other
bugs. Instead, workaround it by disabling GCOV for the test_bitmap unless
the compiler will get fixed.
[1] https://github.com/ClangBuiltLinux/linux/issues/1874
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202307171254.yFcH97ej-lkp@intel.com/
Fixes:
|
||
|
Jann Horn
|
ce6616724f |
ubsan: Clarify Kconfig text for CONFIG_UBSAN_TRAP
Make it clearer in the one-line description and the verbose description text that CONFIG_UBSAN_TRAP as currently implemented involves a tradeoff of much less helpful oops messages in exchange for a smaller kernel image. (With the additional effect of turning UBSAN warnings into crashes, which may or may not be desired.) Signed-off-by: Jann Horn <jannh@google.com> Link: https://lore.kernel.org/r/20230705215128.486054-1-jannh@google.com Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Randy Dunlap
|
dcb60f9c40 |
cpumask: eliminate kernel-doc warnings
Update lib/cpumask.c and <linux/cpumask.h> to fix all kernel-doc warnings: include/linux/cpumask.h:185: warning: Function parameter or member 'srcp1' not described in 'cpumask_first_and' include/linux/cpumask.h:185: warning: Function parameter or member 'srcp2' not described in 'cpumask_first_and' include/linux/cpumask.h:185: warning: Excess function parameter 'src1p' description in 'cpumask_first_and' include/linux/cpumask.h:185: warning: Excess function parameter 'src2p' description in 'cpumask_first_and' lib/cpumask.c:59: warning: Function parameter or member 'node' not described in 'alloc_cpumask_var_node' lib/cpumask.c:169: warning: Function parameter or member 'src1p' not described in 'cpumask_any_and_distribute' lib/cpumask.c:169: warning: Function parameter or member 'src2p' not described in 'cpumask_any_and_distribute' Fixes: |
||
|
Liam R. Howlett
|
7a93c71a67 |
maple_tree: fix 32 bit mas_next testing
The test setup of mas_next is dependent on node entry size to create a 2
level tree, but the tests did not account for this in the expected value
when shifting beyond the scope of the tree.
Fix this by setting up the test to succeed depending on the node entries
which is dependent on the 32/64 bit setup.
Link: https://lkml.kernel.org/r/20230712173916.168805-1-Liam.Howlett@oracle.com
Fixes:
|
||
|
Peng Zhang
|
3c769fd88b |
maple_tree: set the node limit when creating a new root node
Set the node limit of the root node so that the last pivot of all nodes is
the node limit (if the node is not full).
This patch also fixes a bug in mas_rev_awalk(). Effectively, always
setting a maximum makes mas_logical_pivot() behave as mas_safe_pivot().
Without this fix, it is possible that very small tasks would fail to find
the correct gap. Although this has not been observed with real tasks, it
has been reported to happen in m68k nommu running the maple tree tests.
Link: https://lkml.kernel.org/r/20230711035444.526-1-zhangpeng.00@bytedance.com
Link: https://lore.kernel.org/linux-mm/CAMuHMdV4T53fOw7VPoBgPR7fP6RYqf=CBhD_y_vOg53zZX_DnA@mail.gmail.com/
Link: https://lkml.kernel.org/r/20230711035444.526-2-zhangpeng.00@bytedance.com
Fixes:
|
||
|
Jakub Kicinski
|
d2afa89f66 |
for-netdev
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE+soXsSLHKoYyzcli6rmadz2vbToFAmSwqwoACgkQ6rmadz2v bTqOHRAAn+fzTLqUqsveFQcxOkie5MPHxKoOTjG4+yFR7rzPkU6Mn5RX3w5yFzSn RqutwykF9OgipAzC3QXv4pRJuq6Gia5nvwUSDP4CX273ljyeF54DK7HfopE1+YrK HXyBWZvVvMZP6q7qQyQ3qtbHZSjs5XP/M6YBlJ5zo/BTLFCyvbSDP14YKEqcBkWG ld72ElXFxlnr/zEfRjzBCfMlbmgeHLO0SiHS/9827zEmNP1AAH5/ETA7/rJ7yCJs QNQUIoJWob8xm5FMJ6CU/+sOqXR1CY053meGJFFBX5pvVD/CLRhrwHn0IMCyQqmh wKR5waeXhpl/CKNeFuxXVMNFiXbqBb/0LYJaJtrMysjMLTsQ9X7NkrDBa/+kYGyZ +ghGlaMQvPqUGg0rLH2nl9JNB8Ne/8prLMsAKUWnPuOo+Q03j054gnqhGeNtDd5b gpSk+7x93PlhGcegBV1Wk8dkiGC5V9nTVNxg40XQUCs4k9L/8Vjc35Tjqx7nBTNH DiFD24DDKUZacw9L6nEqvLF/N2fiRjtUZnVPC0yn/annyBcfX1s+ZH2Tu1F6Qk38 QMfBCnt12exmsiDoxdzzGJtjHnS/k5fsaKjlR21mOyMrIH7ipltr5UHHrdr1hBP6 24uSeTImvQQKDi+9IuXN127jZDOupKqVS6csrA0ZXrlKWh2HR+U= =GVUB -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Alexei Starovoitov says: ==================== pull-request: bpf-next 2023-07-13 We've added 67 non-merge commits during the last 15 day(s) which contain a total of 106 files changed, 4444 insertions(+), 619 deletions(-). The main changes are: 1) Fix bpftool build in presence of stale vmlinux.h, from Alexander Lobakin. 2) Introduce bpf_me_mcache_free_rcu() and fix OOM under stress, from Alexei Starovoitov. 3) Teach verifier actual bounds of bpf_get_smp_processor_id() and fix perf+libbpf issue related to custom section handling, from Andrii Nakryiko. 4) Introduce bpf map element count, from Anton Protopopov. 5) Check skb ownership against full socket, from Kui-Feng Lee. 6) Support for up to 12 arguments in BPF trampoline, from Menglong Dong. 7) Export rcu_request_urgent_qs_task, from Paul E. McKenney. 8) Fix BTF walking of unions, from Yafang Shao. 9) Extend link_info for kprobe_multi and perf_event links, from Yafang Shao. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (67 commits) selftests/bpf: Add selftest for PTR_UNTRUSTED bpf: Fix an error in verifying a field in a union selftests/bpf: Add selftests for nested_trust bpf: Fix an error around PTR_UNTRUSTED selftests/bpf: add testcase for TRACING with 6+ arguments bpf, x86: allow function arguments up to 12 for TRACING bpf, x86: save/restore regs with BPF_DW size bpftool: Use "fallthrough;" keyword instead of comments bpf: Add object leak check. bpf: Convert bpf_cpumask to bpf_mem_cache_free_rcu. bpf: Introduce bpf_mem_free_rcu() similar to kfree_rcu(). selftests/bpf: Improve test coverage of bpf_mem_alloc. rcu: Export rcu_request_urgent_qs_task() bpf: Allow reuse from waiting_for_gp_ttrace list. bpf: Add a hint to allocated objects. bpf: Change bpf_mem_cache draining process. bpf: Further refactor alloc_bulk(). bpf: Factor out inc/dec of active flag into helpers. bpf: Refactor alloc_bulk(). bpf: Let free_all() return the number of freed elements. ... ==================== Link: https://lore.kernel.org/r/20230714020910.80794-1-alexei.starovoitov@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Geert Uytterhoeven
|
b2ec116aad |
workqueue: Fix cpu_intensive_thresh_us name in help text
There exists no parameter called "cpu_intensive_threshold_us".
The actual parameter name is "cpu_intensive_thresh_us".
Fixes:
|
||
|
Peter Zijlstra
|
719a937b70 |
iov_iter: Mark copy_iovec_from_user() noclone
Extend commit |
||
|
Andy Shevchenko
|
9ab04d7ed8
|
lib/math/int_log: Replace LGPL-2.1-or-later boilerplate with SPDX identifier
Replace license boilerplate in udftime.c with SPDX identifier for LGPL-2.1-or-later. Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org> Link: https://lore.kernel.org/r/20230619172019.21457-4-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230703135211.87416-4-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Andy Shevchenko
|
08f6a14b2d
|
lib/math/int_log: Use ARRAY_SIZE(logtable) where makes sense
Use ARRAY_SIZE(logtable) where makes sense. Reviewed-by: Mauro Carvalho Chehab <mchehab@kernel.org> Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org> Link: https://lore.kernel.org/r/20230619172019.21457-3-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230703135211.87416-3-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Andy Shevchenko
|
f97fa3dcb2
|
lib/math: Move dvb_math.c into lib/math/int_log.c
Some existing and new users may benefit from the intlog2() and intlog10() APIs, make them wide available. Reviewed-by: Mauro Carvalho Chehab <mchehab@kernel.org> Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org> Link: https://lore.kernel.org/r/20230619172019.21457-2-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20230703135211.87416-2-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Linus Torvalds
|
946c6b59c5 |
16 hotfixes. Six are cc:stable and the remainder address post-6.4 issues.
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZKmgXAAKCRDdBJ7gKXxA joqDAP0V520Jy0cyJrRMvaQRFMqtVeDOdTpAue7ZOQHSi/LZnAD9EEAxDpYF/V4x PO27ixXQ4Glm2iYgH7bDX7J73WiA3wg= =JsYW -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2023-07-08-10-43' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull hotfixes from Andrew Morton: "16 hotfixes. Six are cc:stable and the remainder address post-6.4 issues" The merge undoes the disabling of the CONFIG_PER_VMA_LOCK feature, since it was all hopefully fixed in mainline. * tag 'mm-hotfixes-stable-2023-07-08-10-43' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: lib: dhry: fix sleeping allocations inside non-preemptable section kasan, slub: fix HW_TAGS zeroing with slub_debug kasan: fix type cast in memory_is_poisoned_n mailmap: add entries for Heiko Stuebner mailmap: update manpage link bootmem: remove the vmemmap pages from kmemleak in free_bootmem_page MAINTAINERS: add linux-next info mailmap: add Markus Schneider-Pargmann writeback: account the number of pages written back mm: call arch_swap_restore() from do_swap_page() squashfs: fix cache race with migration mm/hugetlb.c: fix a bug within a BUG(): inconsistent pte comparison docs: update ocfs2-devel mailing list address MAINTAINERS: update ocfs2-devel mailing list address mm: disable CONFIG_PER_VMA_LOCK until its fixed fork: lock VMAs of the parent process when forking |
||
|
Linus Torvalds
|
8fc3b8f082 |
hardening fixes for v6.5-rc1
- Check for NULL bdev in LoadPin (Matthias Kaehlcke) - Revert unwanted KUnit FORTIFY build default - Fix 1-element array causing boot warnings with xhci-hub -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmSoVSsWHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJjyuD/9Sgr+T3VJyROJdKouYO8tLUqaO g0A6+WE0L7XyO4ZYk4FOadeihsVEPuhB0fpDTwriKCKdPB35+Nhq8YfWPPQcGdjQ 0IAT5AjsjYDDFGABRtsNRcL+KXyR+QRVUnSllEsZuwb3lyq6HRbdTF2QBjToAbyO QOgEnFJNqPp2w9y2KSzpMuYL4I9o1WbyM+huVSfoKe/3d2WnVKiARMpV+0EJgUAy BvORp55+c1w77IRbQduACWszdCLXfkQyI+p5ii3M7cZmePDe4q8LHN01WtIMEnHy cln7AnwU4daxzfdeAWIQMLFjOXTLHlkRhC18KSobeBc5Zkudtcg5LxtFGiDsDgOU mUWB/Ow8rgr6KlYkMFmFrW/GAVX12KbPXDATECa/4Yhl55Ydl/1bChJWWnX2pppU mRRnwIcY7MfhRLeB284Gst81wOHy408arJsm/vck5kdya0Ys1y38rgNQm7iKfXVu FYMrDU9qqGmeIVk2namjQYoWH5ei670PXndtrcvSffeZOhpzk2FnFphtraPe0mrl l1lcUonZwEoTJ4wDiOR9cjSphoDVom9LgwygQVb4KGHBjuCfRABDV2DGy9duBMtv Akcet48VkCX6wF91+30fFmTs5haRiF/5kkx5fGuxhFlQO8QHYVjIOH55VqhAt3mw d0OWiZaNRvbNfjPSkQ== =R3uK -----END PGP SIGNATURE----- Merge tag 'hardening-v6.5-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening fixes from Kees Cook: - Check for NULL bdev in LoadPin (Matthias Kaehlcke) - Revert unwanted KUnit FORTIFY build default - Fix 1-element array causing boot warnings with xhci-hub * tag 'hardening-v6.5-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: usb: ch9: Replace bmSublinkSpeedAttr 1-element array with flexible array Revert "fortify: Allow KUnit test to build without FORTIFY" dm: verity-loadpin: Add NULL pointer check for 'bdev' parameter |
||
|
Linus Torvalds
|
ad8258e877 |
bitmap patches for v6.5
Fixes for different bitmap pieces:
- lib/test_bitmap: increment failure counter properly
The tests that don't use expect_eq() macro to determine that a test is
failured must increment failed_tests explicitly.
- lib/bitmap: drop optimization of bitmap_{from,to}_arr64
bitmap_{from,to}_arr64() optimization is overly optimistic on 32-bit LE
architectures when it's wired to bitmap_copy_clear_tail().
- nodemask: Drop duplicate check in for_each_node_mask()
As the return value type of first_node() became unsigned, the node >= 0
became unnecessary.
- cpumask: fix function description kernel-doc notation
- MAINTAINERS: Add bits.h to the BITMAP API record
- MAINTAINERS: Add bitfield.h to the BITMAP API record
Add linux/bits.h and linux/bitfield.h for visibility
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Merge tag 'bitmap-6.5-rc1' of https://github.com/norov/linux
Pull bitmap updates from Yury Norov:
"Fixes for different bitmap pieces:
- lib/test_bitmap: increment failure counter properly
The tests that don't use expect_eq() macro to determine that a test
is failured must increment failed_tests explicitly.
- lib/bitmap: drop optimization of bitmap_{from,to}_arr64
bitmap_{from,to}_arr64() optimization is overly optimistic
on 32-bit LE architectures when it's wired to
bitmap_copy_clear_tail().
- nodemask: Drop duplicate check in for_each_node_mask()
As the return value type of first_node() became unsigned, the node
>= 0 became unnecessary.
- cpumask: fix function description kernel-doc notation
- MAINTAINERS: Add bits.h and bitfield.h to the BITMAP API record
Add linux/bits.h and linux/bitfield.h for visibility"
* tag 'bitmap-6.5-rc1' of https://github.com/norov/linux:
MAINTAINERS: Add bitfield.h to the BITMAP API record
MAINTAINERS: Add bits.h to the BITMAP API record
cpumask: fix function description kernel-doc notation
nodemask: Drop duplicate check in for_each_node_mask()
lib/bitmap: drop optimization of bitmap_{from,to}_arr64
lib/test_bitmap: increment failure counter properly
|
||
|
Geert Uytterhoeven
|
8ba388c06b |
lib: dhry: fix sleeping allocations inside non-preemptable section
The Smatch static checker reports the following warnings:
lib/dhry_run.c:38 dhry_benchmark() warn: sleeping in atomic context
lib/dhry_run.c:43 dhry_benchmark() warn: sleeping in atomic context
Indeed, dhry() does sleeping allocations inside the non-preemptable
section delimited by get_cpu()/put_cpu().
Fix this by using atomic allocations instead.
Add error handling, as atomic these allocations may fail.
Link: https://lkml.kernel.org/r/bac6d517818a7cd8efe217c1ad649fffab9cc371.1688568764.git.geert+renesas@glider.be
Fixes:
|
||
|
Linus Torvalds
|
7b82e90411 |
asm-generic updates for 6.5
These are cleanups for architecture specific header files:
- the comments in include/linux/syscalls.h have gone out of sync
and are really pointless, so these get removed
- The asm/bitsperlong.h header no longer needs to be architecture
specific on modern compilers, so use a generic version for newer
architectures that use new enough userspace compilers
- A cleanup for virt_to_pfn/virt_to_bus to have proper type
checking, forcing the use of pointers
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Merge tag 'asm-generic-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic updates from Arnd Bergmann:
"These are cleanups for architecture specific header files:
- the comments in include/linux/syscalls.h have gone out of sync and
are really pointless, so these get removed
- The asm/bitsperlong.h header no longer needs to be architecture
specific on modern compilers, so use a generic version for newer
architectures that use new enough userspace compilers
- A cleanup for virt_to_pfn/virt_to_bus to have proper type checking,
forcing the use of pointers"
* tag 'asm-generic-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
syscalls: Remove file path comments from headers
tools arch: Remove uapi bitsperlong.h of hexagon and microblaze
asm-generic: Unify uapi bitsperlong.h for arm64, riscv and loongarch
m68k/mm: Make pfn accessors static inlines
arm64: memory: Make virt_to_pfn() a static inline
ARM: mm: Make virt_to_pfn() a static inline
asm-generic/page.h: Make pfn accessors static inlines
xen/netback: Pass (void *) to virt_to_page()
netfs: Pass a pointer to virt_to_page()
cifs: Pass a pointer to virt_to_page() in cifsglob
cifs: Pass a pointer to virt_to_page()
riscv: mm: init: Pass a pointer to virt_to_page()
ARC: init: Pass a pointer to virt_to_pfn() in init
m68k: Pass a pointer to virt_to_pfn() virt_to_page()
fs/proc/kcore.c: Pass a pointer to virt_addr_valid()
|
||
|
Kees Cook
|
5e2956ee46 |
Revert "fortify: Allow KUnit test to build without FORTIFY"
This reverts commit
|
||
|
Linus Torvalds
|
44aeec836d |
Char/Misc and other driver subsystem updates for 6.5-rc1
Here is the big set of char/misc and other driver subsystem updates for
6.5-rc1.
Lots of different, tiny, stuff in here, from a range of smaller driver
subsystems, including pulls from some substems directly:
- IIO driver updates and additions
- W1 driver updates and fixes (and a new maintainer!)
- FPGA driver updates and fixes
- Counter driver updates
- Extcon driver updates
- Interconnect driver updates
- Coresight driver updates
- mfd tree tag merge needed for other updates
on top of that, lots of small driver updates as patches, including:
- static const updates for class structures
- nvmem driver updates
- pcmcia driver fix
- lots of other small driver updates and fixes
All of these have been in linux-next for a while with no reported
problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull Char/Misc updates from Greg KH:
"Here is the big set of char/misc and other driver subsystem updates
for 6.5-rc1.
Lots of different, tiny, stuff in here, from a range of smaller driver
subsystems, including pulls from some substems directly:
- IIO driver updates and additions
- W1 driver updates and fixes (and a new maintainer!)
- FPGA driver updates and fixes
- Counter driver updates
- Extcon driver updates
- Interconnect driver updates
- Coresight driver updates
- mfd tree tag merge needed for other updates on top of that, lots of
small driver updates as patches, including:
- static const updates for class structures
- nvmem driver updates
- pcmcia driver fix
- lots of other small driver updates and fixes
All of these have been in linux-next for a while with no reported
problems"
* tag 'char-misc-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (243 commits)
bsr: fix build problem with bsr_class static cleanup
comedi: make all 'class' structures const
char: xillybus: make xillybus_class a static const structure
xilinx_hwicap: make icap_class a static const structure
virtio_console: make port class a static const structure
ppdev: make ppdev_class a static const structure
char: misc: make misc_class a static const structure
/dev/mem: make mem_class a static const structure
char: lp: make lp_class a static const structure
dsp56k: make dsp56k_class a static const structure
bsr: make bsr_class a static const structure
oradax: make 'cl' a static const structure
hwtracing: hisi_ptt: Fix potential sleep in atomic context
hwtracing: hisi_ptt: Advertise PERF_PMU_CAP_NO_EXCLUDE for PTT PMU
hwtracing: hisi_ptt: Export available filters through sysfs
hwtracing: hisi_ptt: Add support for dynamically updating the filter list
hwtracing: hisi_ptt: Factor out filter allocation and release operation
samples: pfsm: add CC_CAN_LINK dependency
misc: fastrpc: check return value of devm_kasprintf()
coresight: dummy: Update type of mode parameter in dummy_{sink,source}_enable()
...
|
||
|
Linus Torvalds
|
5d95ff84e6 |
This update includes the following changes:
API: - Add linear akcipher/sig API. - Add tfm cloning (hmac, cmac). - Add statesize to crypto_ahash. Algorithms: - Allow only odd e and restrict value in FIPS mode for RSA. - Replace LFSR with SHA3-256 in jitter. - Add interface for gathering of raw entropy in jitter. Drivers: - Fix race on data_avail and actual data in hwrng/virtio. - Add hash and HMAC support in starfive. - Add RSA algo support in starfive. - Add support for PCI device 0x156E in ccp. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEn51F/lCuNhUwmDeSxycdCkmxi6cFAmSdECcACgkQxycdCkmx i6dW3g//a4DR6aaqYF8pU4svAzO56a0Plx3DVHUiJ4ygRB7xOzrQqXjCren6wY2a LFuetwxebAhIAPsC79vI+3j8VAIlU9cNVqOxBIJHGY7wFO4m1AjqBjlealzqLrth +nEIeUibqLeRw7imOO4adzSsKuSQgyU5rPtKWfrGqqI3RhuMgfWroCtmJ82jmq5l uMZgB+aGGkzyXztxubHRPeJ3nOFEzo95SscpJ43lOjMcURRBhEa+20jXDhUGwpI7 9ycFV31AW+tfkIprAcliiIzZuwIbzlCkte6AxjAVsN100T/wh9JS1Y+uf1P0oZ9y AUQQKyc8/QpSkzHZPTncat5P6zta28r8Q5neCvEEEGGuOE8Oc6kb0Os+RE5ANMU4 2A/zrKGOMIWeEWwXGc51xT3gxyl/Rn5wLw1pW7Lm4d5osGT9jiVXx/g66hKLpagJ jegI6CqgvUajkRNi7JPVnSAauu0Ay8O6pU37/8gLOXNGVZBqONpRimk9qB05LNSF QYzM2sgYv1tQEmjnG8jLhF5Z8brnqYTv2TZwBX43W10EDQNqUYUDff9Flean5xCb +2mxJc81rgtUffnMXyYvQwKLhVKoLpeLR6Ts455S5aP06WAfoyEJyYTA/LHG24GX H2HdS9g5y/K15k9yygMWaXgAx7O7MjM9gEa2VQakhnByj/eQM0s= =rOLu -----END PGP SIGNATURE----- Merge tag 'v6.5-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "API: - Add linear akcipher/sig API - Add tfm cloning (hmac, cmac) - Add statesize to crypto_ahash Algorithms: - Allow only odd e and restrict value in FIPS mode for RSA - Replace LFSR with SHA3-256 in jitter - Add interface for gathering of raw entropy in jitter Drivers: - Fix race on data_avail and actual data in hwrng/virtio - Add hash and HMAC support in starfive - Add RSA algo support in starfive - Add support for PCI device 0x156E in ccp" * tag 'v6.5-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (85 commits) crypto: akcipher - Do not copy dst if it is NULL crypto: sig - Fix verify call crypto: akcipher - Set request tfm on sync path crypto: sm2 - Provide sm2_compute_z_digest when sm2 is disabled hwrng: imx-rngc - switch to DEFINE_SIMPLE_DEV_PM_OPS hwrng: st - keep clock enabled while hwrng is registered hwrng: st - support compile-testing hwrng: imx-rngc - fix the timeout for init and self check KEYS: asymmetric: Use new crypto interface without scatterlists KEYS: asymmetric: Move sm2 code into x509_public_key KEYS: Add forward declaration in asymmetric-parser.h crypto: sig - Add interface for sign/verify crypto: akcipher - Add sync interface without SG lists crypto: cipher - On clone do crypto_mod_get() crypto: api - Add __crypto_alloc_tfmgfp crypto: api - Remove crypto_init_ops() crypto: rsa - allow only odd e and restrict value in FIPS mode crypto: geniv - Split geniv out of AEAD Kconfig option crypto: algboss - Add missing dependency on RNG2 crypto: starfive - Add RSA algo support ... |
||
|
Linus Torvalds
|
d2a6fd45c5 |
Probes updates for v6.5:
- fprobe: Pass return address to the fprobe entry/exit callbacks so that
the callbacks don't need to analyze pt_regs/stack to find the function
return address.
- kprobe events: cleanup usage of TPARG_FL_FENTRY and TPARG_FL_RETURN
flags so that those are not set at once.
- fprobe events:
. Add a new fprobe events for tracing arbitrary function entry and
exit as a trace event.
. Add a new tracepoint events for tracing raw tracepoint as a trace
event. This allows user to trace non user-exposed tracepoints.
. Move eprobe's event parser code into probe event common file.
. Introduce BTF (BPF type format) support to kernel probe (kprobe,
fprobe and tracepoint probe) events so that user can specify traced
function arguments by name. This also applies the type of argument
when fetching the argument.
. Introduce '$arg*' wildcard support if BTF is available. This expands
the '$arg*' meta argument to all function argument automatically.
. Check the return value types by BTF. If the function returns 'void',
'$retval' is rejected.
. Add some selftest script for fprobe events, tracepoint events and
BTF support.
. Update documentation about the fprobe events.
. Some fixes for above features, document and selftests.
- selftests for ftrace (except for new fprobe events):
. Add a test case for multiple consecutive probes in a function which
checks if ftrace based kprobe, optimized kprobe and normal kprobe
can be defined in the same target function.
. Add a test case for optimized probe, which checks whether kprobe
can be optimized or not.
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Merge tag 'probes-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes updates from Masami Hiramatsu:
- fprobe: Pass return address to the fprobe entry/exit callbacks so
that the callbacks don't need to analyze pt_regs/stack to find the
function return address.
- kprobe events: cleanup usage of TPARG_FL_FENTRY and TPARG_FL_RETURN
flags so that those are not set at once.
- fprobe events:
- Add a new fprobe events for tracing arbitrary function entry and
exit as a trace event.
- Add a new tracepoint events for tracing raw tracepoint as a
trace event. This allows user to trace non user-exposed
tracepoints.
- Move eprobe's event parser code into probe event common file.
- Introduce BTF (BPF type format) support to kernel probe (kprobe,
fprobe and tracepoint probe) events so that user can specify
traced function arguments by name. This also applies the type of
argument when fetching the argument.
- Introduce '$arg*' wildcard support if BTF is available. This
expands the '$arg*' meta argument to all function argument
automatically.
- Check the return value types by BTF. If the function returns
'void', '$retval' is rejected.
- Add some selftest script for fprobe events, tracepoint events
and BTF support.
- Update documentation about the fprobe events.
- Some fixes for above features, document and selftests.
- selftests for ftrace (in addition to the new fprobe events):
- Add a test case for multiple consecutive probes in a function
which checks if ftrace based kprobe, optimized kprobe and normal
kprobe can be defined in the same target function.
- Add a test case for optimized probe, which checks whether kprobe
can be optimized or not.
* tag 'probes-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing/probes: Fix tracepoint event with $arg* to fetch correct argument
Documentation: Fix typo of reference file name
tracing/probes: Fix to return NULL and keep using current argc
selftests/ftrace: Add new test case which checks for optimized probes
selftests/ftrace: Add new test case which adds multiple consecutive probes in a function
Documentation: tracing/probes: Add fprobe event tracing document
selftests/ftrace: Add BTF arguments test cases
selftests/ftrace: Add tracepoint probe test case
tracing/probes: Add BTF retval type support
tracing/probes: Add $arg* meta argument for all function args
tracing/probes: Support function parameters if BTF is available
tracing/probes: Move event parameter fetching code to common parser
tracing/probes: Add tracepoint support on fprobe_events
selftests/ftrace: Add fprobe related testcases
tracing/probes: Add fprobe events for tracing function entry and exit.
tracing/probes: Avoid setting TPARG_FL_FENTRY and TPARG_FL_RETURN
fprobe: Pass return address to the handlers
|
||
|
Sumitra Sharma
|
da1a055d01 |
lib/test_bpf: Call page_address() on page acquired with GFP_KERNEL flag
generate_test_data() acquires a page with alloc_page(GFP_KERNEL). The GFP_KERNEL is typical for kernel-internal allocations. The caller requires ZONE_NORMAL or a lower zone for direct access. Therefore the page cannot come from ZONE_HIGHMEM. Thus there's no need to map it with kmap(). Also, the kmap() is being deprecated in favor of kmap_local_page() [1]. Hence, use a plain page_address() directly. Since the page passed to the page_address() is not from the highmem zone, the page_address() function will always return a valid kernel virtual address and will not return NULL. Hence, remove the check 'if (!ptr)'. Remove the unused variable 'ptr' and label 'err_free_page'. [1] https://lore.kernel.org/all/20220813220034.806698-1-ira.weiny@intel.com/ Reported-by: kernel test robot <lkp@intel.com> Suggested-by: Fabio M. De Francesco <fmdefrancesco@gmail.com> Signed-off-by: Sumitra Sharma <sumitraartsy@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Fabio M. De Francesco <fmdefrancesco@gmail.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Link: https://lore.kernel.org/bpf/20230623151644.GA434468@sumitra.com |
||
|
Linus Torvalds
|
3a8a670eee |
Networking changes for 6.5.
Core
----
- Rework the sendpage & splice implementations. Instead of feeding
data into sockets page by page extend sendmsg handlers to support
taking a reference on the data, controlled by a new flag called
MSG_SPLICE_PAGES. Rework the handling of unexpected-end-of-file
to invoke an additional callback instead of trying to predict what
the right combination of MORE/NOTLAST flags is.
Remove the MSG_SENDPAGE_NOTLAST flag completely.
- Implement SCM_PIDFD, a new type of CMSG type analogous to
SCM_CREDENTIALS, but it contains pidfd instead of plain pid.
- Enable socket busy polling with CONFIG_RT.
- Improve reliability and efficiency of reporting for ref_tracker.
- Auto-generate a user space C library for various Netlink families.
Protocols
---------
- Allow TCP to shrink the advertised window when necessary, prevent
sk_rcvbuf auto-tuning from growing the window all the way up to
tcp_rmem[2].
- Use per-VMA locking for "page-flipping" TCP receive zerocopy.
- Prepare TCP for device-to-device data transfers, by making sure
that payloads are always attached to skbs as page frags.
- Make the backoff time for the first N TCP SYN retransmissions
linear. Exponential backoff is unnecessarily conservative.
- Create a new MPTCP getsockopt to retrieve all info (MPTCP_FULL_INFO).
- Avoid waking up applications using TLS sockets until we have
a full record.
- Allow using kernel memory for protocol ioctl callbacks, paving
the way to issuing ioctls over io_uring.
- Add nolocalbypass option to VxLAN, forcing packets to be fully
encapsulated even if they are destined for a local IP address.
- Make TCPv4 use consistent hash in TIME_WAIT and SYN_RECV. Ensure
in-kernel ECMP implementation (e.g. Open vSwitch) select the same
link for all packets. Support L4 symmetric hashing in Open vSwitch.
- PPPoE: make number of hash bits configurable.
- Allow DNS to be overwritten by DHCPACK in the in-kernel DHCP client
(ipconfig).
- Add layer 2 miss indication and filtering, allowing higher layers
(e.g. ACL filters) to make forwarding decisions based on whether
packet matched forwarding state in lower devices (bridge).
- Support matching on Connectivity Fault Management (CFM) packets.
- Hide the "link becomes ready" IPv6 messages by demoting their
printk level to debug.
- HSR: don't enable promiscuous mode if device offloads the proto.
- Support active scanning in IEEE 802.15.4.
- Continue work on Multi-Link Operation for WiFi 7.
BPF
---
- Add precision propagation for subprogs and callbacks. This allows
maintaining verification efficiency when subprograms are used,
or in fact passing the verifier at all for complex programs,
especially those using open-coded iterators.
- Improve BPF's {g,s}setsockopt() length handling. Previously BPF
assumed the length is always equal to the amount of written data.
But some protos allow passing a NULL buffer to discover what
the output buffer *should* be, without writing anything.
- Accept dynptr memory as memory arguments passed to helpers.
- Add routing table ID to bpf_fib_lookup BPF helper.
- Support O_PATH FDs in BPF_OBJ_PIN and BPF_OBJ_GET commands.
- Drop bpf_capable() check in BPF_MAP_FREEZE command (used to mark
maps as read-only).
- Show target_{obj,btf}_id in tracing link fdinfo.
- Addition of several new kfuncs (most of the names are self-explanatory):
- Add a set of new dynptr kfuncs: bpf_dynptr_adjust(),
bpf_dynptr_is_null(), bpf_dynptr_is_rdonly(), bpf_dynptr_size()
and bpf_dynptr_clone().
- bpf_task_under_cgroup()
- bpf_sock_destroy() - force closing sockets
- bpf_cpumask_first_and(), rework bpf_cpumask_any*() kfuncs
Netfilter
---------
- Relax set/map validation checks in nf_tables. Allow checking
presence of an entry in a map without using the value.
- Increase ip_vs_conn_tab_bits range for 64BIT builds.
- Allow updating size of a set.
- Improve NAT tuple selection when connection is closing.
Driver API
----------
- Integrate netdev with LED subsystem, to allow configuring HW
"offloaded" blinking of LEDs based on link state and activity
(i.e. packets coming in and out).
- Support configuring rate selection pins of SFP modules.
- Factor Clause 73 auto-negotiation code out of the drivers, provide
common helper routines.
- Add more fool-proof helpers for managing lifetime of MDIO devices
associated with the PCS layer.
- Allow drivers to report advanced statistics related to Time Aware
scheduler offload (taprio).
- Allow opting out of VF statistics in link dump, to allow more VFs
to fit into the message.
- Split devlink instance and devlink port operations.
New hardware / drivers
----------------------
- Ethernet:
- Synopsys EMAC4 IP support (stmmac)
- Marvell 88E6361 8 port (5x1GE + 3x2.5GE) switches
- Marvell 88E6250 7 port switches
- Microchip LAN8650/1 Rev.B0 PHYs
- MediaTek MT7981/MT7988 built-in 1GE PHY driver
- WiFi:
- Realtek RTL8192FU, 2.4 GHz, b/g/n mode, 2T2R, 300 Mbps
- Realtek RTL8723DS (SDIO variant)
- Realtek RTL8851BE
- CAN:
- Fintek F81604
Drivers
-------
- Ethernet NICs:
- Intel (100G, ice):
- support dynamic interrupt allocation
- use meta data match instead of VF MAC addr on slow-path
- nVidia/Mellanox:
- extend link aggregation to handle 4, rather than just 2 ports
- spawn sub-functions without any features by default
- OcteonTX2:
- support HTB (Tx scheduling/QoS) offload
- make RSS hash generation configurable
- support selecting Rx queue using TC filters
- Wangxun (ngbe/txgbe):
- add basic Tx/Rx packet offloads
- add phylink support (SFP/PCS control)
- Freescale/NXP (enetc):
- report TAPRIO packet statistics
- Solarflare/AMD:
- support matching on IP ToS and UDP source port of outer header
- VxLAN and GENEVE tunnel encapsulation over IPv4 or IPv6
- add devlink dev info support for EF10
- Virtual NICs:
- Microsoft vNIC:
- size the Rx indirection table based on requested configuration
- support VLAN tagging
- Amazon vNIC:
- try to reuse Rx buffers if not fully consumed, useful for ARM
servers running with 16kB pages
- Google vNIC:
- support TCP segmentation of >64kB frames
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- enable USXGMII (88E6191X)
- Microchip:
- lan966x: add support for Egress Stage 0 ACL engine
- lan966x: support mapping packet priority to internal switch
priority (based on PCP or DSCP)
- Ethernet PHYs:
- Broadcom PHYs:
- support for Wake-on-LAN for BCM54210E/B50212E
- report LPI counter
- Microsemi PHYs: support RGMII delay configuration (VSC85xx)
- Micrel PHYs: receive timestamp in the frame (LAN8841)
- Realtek PHYs: support optional external PHY clock
- Altera TSE PCS: merge the driver into Lynx PCS which it is
a variant of
- CAN: Kvaser PCIEcan:
- support packet timestamping
- WiFi:
- Intel (iwlwifi):
- major update for new firmware and Multi-Link Operation (MLO)
- configuration rework to drop test devices and split
the different families
- support for segmented PNVM images and power tables
- new vendor entries for PPAG (platform antenna gain) feature
- Qualcomm 802.11ax (ath11k):
- Multiple Basic Service Set Identifier (MBSSID) and
Enhanced MBSSID Advertisement (EMA) support in AP mode
- support factory test mode
- RealTek (rtw89):
- add RSSI based antenna diversity
- support U-NII-4 channels on 5 GHz band
- RealTek (rtl8xxxu):
- AP mode support for 8188f
- support USB RX aggregation for the newer chips
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking changes from Jakub Kicinski:
"WiFi 7 and sendpage changes are the biggest pieces of work for this
release. The latter will definitely require fixes but I think that we
got it to a reasonable point.
Core:
- Rework the sendpage & splice implementations
Instead of feeding data into sockets page by page extend sendmsg
handlers to support taking a reference on the data, controlled by a
new flag called MSG_SPLICE_PAGES
Rework the handling of unexpected-end-of-file to invoke an
additional callback instead of trying to predict what the right
combination of MORE/NOTLAST flags is
Remove the MSG_SENDPAGE_NOTLAST flag completely
- Implement SCM_PIDFD, a new type of CMSG type analogous to
SCM_CREDENTIALS, but it contains pidfd instead of plain pid
- Enable socket busy polling with CONFIG_RT
- Improve reliability and efficiency of reporting for ref_tracker
- Auto-generate a user space C library for various Netlink families
Protocols:
- Allow TCP to shrink the advertised window when necessary, prevent
sk_rcvbuf auto-tuning from growing the window all the way up to
tcp_rmem[2]
- Use per-VMA locking for "page-flipping" TCP receive zerocopy
- Prepare TCP for device-to-device data transfers, by making sure
that payloads are always attached to skbs as page frags
- Make the backoff time for the first N TCP SYN retransmissions
linear. Exponential backoff is unnecessarily conservative
- Create a new MPTCP getsockopt to retrieve all info
(MPTCP_FULL_INFO)
- Avoid waking up applications using TLS sockets until we have a full
record
- Allow using kernel memory for protocol ioctl callbacks, paving the
way to issuing ioctls over io_uring
- Add nolocalbypass option to VxLAN, forcing packets to be fully
encapsulated even if they are destined for a local IP address
- Make TCPv4 use consistent hash in TIME_WAIT and SYN_RECV. Ensure
in-kernel ECMP implementation (e.g. Open vSwitch) select the same
link for all packets. Support L4 symmetric hashing in Open vSwitch
- PPPoE: make number of hash bits configurable
- Allow DNS to be overwritten by DHCPACK in the in-kernel DHCP client
(ipconfig)
- Add layer 2 miss indication and filtering, allowing higher layers
(e.g. ACL filters) to make forwarding decisions based on whether
packet matched forwarding state in lower devices (bridge)
- Support matching on Connectivity Fault Management (CFM) packets
- Hide the "link becomes ready" IPv6 messages by demoting their
printk level to debug
- HSR: don't enable promiscuous mode if device offloads the proto
- Support active scanning in IEEE 802.15.4
- Continue work on Multi-Link Operation for WiFi 7
BPF:
- Add precision propagation for subprogs and callbacks. This allows
maintaining verification efficiency when subprograms are used, or
in fact passing the verifier at all for complex programs,
especially those using open-coded iterators
- Improve BPF's {g,s}setsockopt() length handling. Previously BPF
assumed the length is always equal to the amount of written data.
But some protos allow passing a NULL buffer to discover what the
output buffer *should* be, without writing anything
- Accept dynptr memory as memory arguments passed to helpers
- Add routing table ID to bpf_fib_lookup BPF helper
- Support O_PATH FDs in BPF_OBJ_PIN and BPF_OBJ_GET commands
- Drop bpf_capable() check in BPF_MAP_FREEZE command (used to mark
maps as read-only)
- Show target_{obj,btf}_id in tracing link fdinfo
- Addition of several new kfuncs (most of the names are
self-explanatory):
- Add a set of new dynptr kfuncs: bpf_dynptr_adjust(),
bpf_dynptr_is_null(), bpf_dynptr_is_rdonly(), bpf_dynptr_size()
and bpf_dynptr_clone().
- bpf_task_under_cgroup()
- bpf_sock_destroy() - force closing sockets
- bpf_cpumask_first_and(), rework bpf_cpumask_any*() kfuncs
Netfilter:
- Relax set/map validation checks in nf_tables. Allow checking
presence of an entry in a map without using the value
- Increase ip_vs_conn_tab_bits range for 64BIT builds
- Allow updating size of a set
- Improve NAT tuple selection when connection is closing
Driver API:
- Integrate netdev with LED subsystem, to allow configuring HW
"offloaded" blinking of LEDs based on link state and activity
(i.e. packets coming in and out)
- Support configuring rate selection pins of SFP modules
- Factor Clause 73 auto-negotiation code out of the drivers, provide
common helper routines
- Add more fool-proof helpers for managing lifetime of MDIO devices
associated with the PCS layer
- Allow drivers to report advanced statistics related to Time Aware
scheduler offload (taprio)
- Allow opting out of VF statistics in link dump, to allow more VFs
to fit into the message
- Split devlink instance and devlink port operations
New hardware / drivers:
- Ethernet:
- Synopsys EMAC4 IP support (stmmac)
- Marvell 88E6361 8 port (5x1GE + 3x2.5GE) switches
- Marvell 88E6250 7 port switches
- Microchip LAN8650/1 Rev.B0 PHYs
- MediaTek MT7981/MT7988 built-in 1GE PHY driver
- WiFi:
- Realtek RTL8192FU, 2.4 GHz, b/g/n mode, 2T2R, 300 Mbps
- Realtek RTL8723DS (SDIO variant)
- Realtek RTL8851BE
- CAN:
- Fintek F81604
Drivers:
- Ethernet NICs:
- Intel (100G, ice):
- support dynamic interrupt allocation
- use meta data match instead of VF MAC addr on slow-path
- nVidia/Mellanox:
- extend link aggregation to handle 4, rather than just 2 ports
- spawn sub-functions without any features by default
- OcteonTX2:
- support HTB (Tx scheduling/QoS) offload
- make RSS hash generation configurable
- support selecting Rx queue using TC filters
- Wangxun (ngbe/txgbe):
- add basic Tx/Rx packet offloads
- add phylink support (SFP/PCS control)
- Freescale/NXP (enetc):
- report TAPRIO packet statistics
- Solarflare/AMD:
- support matching on IP ToS and UDP source port of outer
header
- VxLAN and GENEVE tunnel encapsulation over IPv4 or IPv6
- add devlink dev info support for EF10
- Virtual NICs:
- Microsoft vNIC:
- size the Rx indirection table based on requested
configuration
- support VLAN tagging
- Amazon vNIC:
- try to reuse Rx buffers if not fully consumed, useful for ARM
servers running with 16kB pages
- Google vNIC:
- support TCP segmentation of >64kB frames
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- enable USXGMII (88E6191X)
- Microchip:
- lan966x: add support for Egress Stage 0 ACL engine
- lan966x: support mapping packet priority to internal switch
priority (based on PCP or DSCP)
- Ethernet PHYs:
- Broadcom PHYs:
- support for Wake-on-LAN for BCM54210E/B50212E
- report LPI counter
- Microsemi PHYs: support RGMII delay configuration (VSC85xx)
- Micrel PHYs: receive timestamp in the frame (LAN8841)
- Realtek PHYs: support optional external PHY clock
- Altera TSE PCS: merge the driver into Lynx PCS which it is a
variant of
- CAN: Kvaser PCIEcan:
- support packet timestamping
- WiFi:
- Intel (iwlwifi):
- major update for new firmware and Multi-Link Operation (MLO)
- configuration rework to drop test devices and split the
different families
- support for segmented PNVM images and power tables
- new vendor entries for PPAG (platform antenna gain) feature
- Qualcomm 802.11ax (ath11k):
- Multiple Basic Service Set Identifier (MBSSID) and Enhanced
MBSSID Advertisement (EMA) support in AP mode
- support factory test mode
- RealTek (rtw89):
- add RSSI based antenna diversity
- support U-NII-4 channels on 5 GHz band
- RealTek (rtl8xxxu):
- AP mode support for 8188f
- support USB RX aggregation for the newer chips"
* tag 'net-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1602 commits)
net: scm: introduce and use scm_recv_unix helper
af_unix: Skip SCM_PIDFD if scm->pid is NULL.
net: lan743x: Simplify comparison
netlink: Add __sock_i_ino() for __netlink_diag_dump().
net: dsa: avoid suspicious RCU usage for synced VLAN-aware MAC addresses
Revert "af_unix: Call scm_recv() only after scm_set_cred()."
phylink: ReST-ify the phylink_pcs_neg_mode() kdoc
libceph: Partially revert changes to support MSG_SPLICE_PAGES
net: phy: mscc: fix packet loss due to RGMII delays
net: mana: use vmalloc_array and vcalloc
net: enetc: use vmalloc_array and vcalloc
ionic: use vmalloc_array and vcalloc
pds_core: use vmalloc_array and vcalloc
gve: use vmalloc_array and vcalloc
octeon_ep: use vmalloc_array and vcalloc
net: usb: qmi_wwan: add u-blox 0x1312 composition
perf trace: fix MSG_SPLICE_PAGES build error
ipvlan: Fix return value of ipvlan_queue_xmit()
netfilter: nf_tables: fix underflow in chain reference counter
netfilter: nf_tables: unbind non-anonymous set if rule construction fails
...
|
||
|
Linus Torvalds
|
6a8cbd9253 |
v6.5-rc1-sysctl-next
The changes queued up for v6.5-rc1 for sysctl are in line with prior efforts to stop usage of deprecated routines which incur recursion and also make it hard to remove the empty array element in each sysctl array declaration. The most difficult user to modify was parport which required a bit of re-thinking of how to declare shared sysctls there, Joel Granados has stepped up to the plate to do most of this work and eventual removal of register_sysctl_table(). That work ended up saving us about 1465 bytes according to bloat-o-meter. Since we gained a few bloat-o-meter karma points I moved two rather small sysctl arrays from kernel/sysctl.c leaving us only two more sysctl arrays to move left. Most changes have been tested on linux-next for about a month. The last straggler patches are a minor parport fix, changes to the sysctl kernel selftest so to verify correctness and prevent regressions for the future change he made to provide an alternative solution for the special sysctl mount point target which was using the now deprecated sysctl child element. This is all prep work to now finally be able to remove the empty array element in all sysctl declarations / registrations which is expected to save us a bit of bytes all over the kernel. That work will be tested early after v6.5-rc1 is out. -----BEGIN PGP SIGNATURE----- iQJGBAABCgAwFiEENnNq2KuOejlQLZofziMdCjCSiKcFAmSceh0SHG1jZ3JvZkBr ZXJuZWwub3JnAAoJEM4jHQowkoinBFQQAK9WdpcU8ODoDzoSls4jsCQpZUCfZ+ED pbCgQqUqu9VPs6bnJ+aXVa6Fh3uCr6+TIfNFM55qI/Sbo2issZ7bm0nvKmGgc6/m giqDP7btvHqiAsEootci8DVdbBXKkdH4dx3pSwleyN8pdinewH0hrKImaPpahyo6 1mB1du0iI89yjsZmheHVVSyfXXYAnP0PqRVy5Y+qxY7yYlIegQ5uAZmwRE62lfTf TuiV7OFuDZ2DBYOmqIhfGKGRnfOL5ZVF3iHCrfUpX3p+fEFzDmwvm3vr73PTSrFw /aRRLa/hOWr5ilw1bvnMcazgQzFEOlQb3DMhBKH7gLl3XHVrM+TaaqYHjUia1+6Y e2axz/duA2q9uLMW81daRApvHMCgy0exkpC7prfOxF5bgTe4TjA7ZWvGpqG1kPKT PPSxw80XvG5hLZm4tB0ZWJ5rOfFpiUGGneSeRQwyuClBt73SIO+F03jyGpt83slU jFE50ac14Zwh1oxpCQtYoR1+bXWdq1QwM5vQBNEuaoTSnJfVjrXqBz/BnqJChtjr m1vA27+4/dfki2P3gVWF1lGx43ir3uJvqk+BjWXm2CDDJqpRi3N0qcUwZwLuqAAz /LEgFqK61bpHi/C8c2NWAxIoeWRU4NUOaoiKmZwyt0sKAWU1Yzg70xssYeg7VYqZ 3pvFNVBqkV+F =sXUU -----END PGP SIGNATURE----- Merge tag 'v6.5-rc1-sysctl-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux Pull sysctl updates from Luis Chamberlain: "The changes for sysctl are in line with prior efforts to stop usage of deprecated routines which incur recursion and also make it hard to remove the empty array element in each sysctl array declaration. The most difficult user to modify was parport which required a bit of re-thinking of how to declare shared sysctls there, Joel Granados has stepped up to the plate to do most of this work and eventual removal of register_sysctl_table(). That work ended up saving us about 1465 bytes according to bloat-o-meter. Since we gained a few bloat-o-meter karma points I moved two rather small sysctl arrays from kernel/sysctl.c leaving us only two more sysctl arrays to move left. Most changes have been tested on linux-next for about a month. The last straggler patches are a minor parport fix, changes to the sysctl kernel selftest so to verify correctness and prevent regressions for the future change he made to provide an alternative solution for the special sysctl mount point target which was using the now deprecated sysctl child element. This is all prep work to now finally be able to remove the empty array element in all sysctl declarations / registrations which is expected to save us a bit of bytes all over the kernel. That work will be tested early after v6.5-rc1 is out" * tag 'v6.5-rc1-sysctl-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux: sysctl: replace child with an enumeration sysctl: Remove debugging dump_stack test_sysclt: Test for registering a mount point test_sysctl: Add an option to prevent test skip test_sysctl: Add an unregister sysctl test test_sysctl: Group node sysctl test under one func test_sysctl: Fix test metadata getters parport: plug a sysctl register leak sysctl: move security keys sysctl registration to its own file sysctl: move umh sysctl registration to its own file signal: move show_unhandled_signals sysctl to its own file sysctl: remove empty dev table sysctl: Remove register_sysctl_table sysctl: Refactor base paths registrations sysctl: stop exporting register_sysctl_table parport: Removed sysctl related defines parport: Remove register_sysctl_table from parport_default_proc_register parport: Remove register_sysctl_table from parport_device_proc_register parport: Remove register_sysctl_table from parport_proc_register parport: Move magic number "15" to a define |
||
|
Linus Torvalds
|
77b1a7f7a0 |
- Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in
top-level directories. - Douglas Anderson has added a new "buddy" mode to the hardlockup detector. It permits the detector to work on architectures which cannot provide the required interrupts, by having CPUs periodically perform checks on other CPUs. - Zhen Lei has enhanced kexec's ability to support two crash regions. - Petr Mladek has done a lot of cleanup on the hard lockup detector's Kconfig entries. - And the usual bunch of singleton patches in various places. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZJelTAAKCRDdBJ7gKXxA juDkAP0VXWynzkXoojdS/8e/hhi+htedmQ3v2dLZD+vBrctLhAEA7rcH58zAVoWa 2ejqO6wDrRGUC7JQcO9VEjT0nv73UwU= =F293 -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2023-06-24-19-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-mm updates from Andrew Morton: - Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in top-level directories - Douglas Anderson has added a new "buddy" mode to the hardlockup detector. It permits the detector to work on architectures which cannot provide the required interrupts, by having CPUs periodically perform checks on other CPUs - Zhen Lei has enhanced kexec's ability to support two crash regions - Petr Mladek has done a lot of cleanup on the hard lockup detector's Kconfig entries - And the usual bunch of singleton patches in various places * tag 'mm-nonmm-stable-2023-06-24-19-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (72 commits) kernel/time/posix-stubs.c: remove duplicated include ocfs2: remove redundant assignment to variable bit_off watchdog/hardlockup: fix typo in config HARDLOCKUP_DETECTOR_PREFER_BUDDY powerpc: move arch_trigger_cpumask_backtrace from nmi.h to irq.h devres: show which resource was invalid in __devm_ioremap_resource() watchdog/hardlockup: define HARDLOCKUP_DETECTOR_ARCH watchdog/sparc64: define HARDLOCKUP_DETECTOR_SPARC64 watchdog/hardlockup: make HAVE_NMI_WATCHDOG sparc64-specific watchdog/hardlockup: declare arch_touch_nmi_watchdog() only in linux/nmi.h watchdog/hardlockup: make the config checks more straightforward watchdog/hardlockup: sort hardlockup detector related config values a logical way watchdog/hardlockup: move SMP barriers from common code to buddy code watchdog/buddy: simplify the dependency for HARDLOCKUP_DETECTOR_PREFER_BUDDY watchdog/buddy: don't copy the cpumask in watchdog_next_cpu() watchdog/buddy: cleanup how watchdog_buddy_check_hardlockup() is called watchdog/hardlockup: remove softlockup comment in touch_nmi_watchdog() watchdog/hardlockup: in watchdog_hardlockup_check() use cpumask_copy() watchdog/hardlockup: don't use raw_cpu_ptr() in watchdog_hardlockup_kick() watchdog/hardlockup: HAVE_NMI_WATCHDOG must implement watchdog_hardlockup_probe() watchdog/hardlockup: keep kernel.nmi_watchdog sysctl as 0444 if probe fails ... |
||
|
Linus Torvalds
|
6e17c6de3d |
- Yosry Ahmed brought back some cgroup v1 stats in OOM logs.
- Yosry has also eliminated cgroup's atomic rstat flushing. - Nhat Pham adds the new cachestat() syscall. It provides userspace with the ability to query pagecache status - a similar concept to mincore() but more powerful and with improved usability. - Mel Gorman provides more optimizations for compaction, reducing the prevalence of page rescanning. - Lorenzo Stoakes has done some maintanance work on the get_user_pages() interface. - Liam Howlett continues with cleanups and maintenance work to the maple tree code. Peng Zhang also does some work on maple tree. - Johannes Weiner has done some cleanup work on the compaction code. - David Hildenbrand has contributed additional selftests for get_user_pages(). - Thomas Gleixner has contributed some maintenance and optimization work for the vmalloc code. - Baolin Wang has provided some compaction cleanups, - SeongJae Park continues maintenance work on the DAMON code. - Huang Ying has done some maintenance on the swap code's usage of device refcounting. - Christoph Hellwig has some cleanups for the filemap/directio code. - Ryan Roberts provides two patch series which yield some rationalization of the kernel's access to pte entries - use the provided APIs rather than open-coding accesses. - Lorenzo Stoakes has some fixes to the interaction between pagecache and directio access to file mappings. - John Hubbard has a series of fixes to the MM selftesting code. - ZhangPeng continues the folio conversion campaign. - Hugh Dickins has been working on the pagetable handling code, mainly with a view to reducing the load on the mmap_lock. - Catalin Marinas has reduced the arm64 kmalloc() minimum alignment from 128 to 8. - Domenico Cerasuolo has improved the zswap reclaim mechanism by reorganizing the LRU management. - Matthew Wilcox provides some fixups to make gfs2 work better with the buffer_head code. - Vishal Moola also has done some folio conversion work. - Matthew Wilcox has removed the remnants of the pagevec code - their functionality is migrated over to struct folio_batch. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZJejewAKCRDdBJ7gKXxA joggAPwKMfT9lvDBEUnJagY7dbDPky1cSYZdJKxxM2cApGa42gEA6Cl8HRAWqSOh J0qXCzqaaN8+BuEyLGDVPaXur9KirwY= =B7yQ -----END PGP SIGNATURE----- Merge tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull mm updates from Andrew Morton: - Yosry Ahmed brought back some cgroup v1 stats in OOM logs - Yosry has also eliminated cgroup's atomic rstat flushing - Nhat Pham adds the new cachestat() syscall. It provides userspace with the ability to query pagecache status - a similar concept to mincore() but more powerful and with improved usability - Mel Gorman provides more optimizations for compaction, reducing the prevalence of page rescanning - Lorenzo Stoakes has done some maintanance work on the get_user_pages() interface - Liam Howlett continues with cleanups and maintenance work to the maple tree code. Peng Zhang also does some work on maple tree - Johannes Weiner has done some cleanup work on the compaction code - David Hildenbrand has contributed additional selftests for get_user_pages() - Thomas Gleixner has contributed some maintenance and optimization work for the vmalloc code - Baolin Wang has provided some compaction cleanups, - SeongJae Park continues maintenance work on the DAMON code - Huang Ying has done some maintenance on the swap code's usage of device refcounting - Christoph Hellwig has some cleanups for the filemap/directio code - Ryan Roberts provides two patch series which yield some rationalization of the kernel's access to pte entries - use the provided APIs rather than open-coding accesses - Lorenzo Stoakes has some fixes to the interaction between pagecache and directio access to file mappings - John Hubbard has a series of fixes to the MM selftesting code - ZhangPeng continues the folio conversion campaign - Hugh Dickins has been working on the pagetable handling code, mainly with a view to reducing the load on the mmap_lock - Catalin Marinas has reduced the arm64 kmalloc() minimum alignment from 128 to 8 - Domenico Cerasuolo has improved the zswap reclaim mechanism by reorganizing the LRU management - Matthew Wilcox provides some fixups to make gfs2 work better with the buffer_head code - Vishal Moola also has done some folio conversion work - Matthew Wilcox has removed the remnants of the pagevec code - their functionality is migrated over to struct folio_batch * tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (380 commits) mm/hugetlb: remove hugetlb_set_page_subpool() mm: nommu: correct the range of mmap_sem_read_lock in task_mem() hugetlb: revert use of page_cache_next_miss() Revert "page cache: fix page_cache_next/prev_miss off by one" mm/vmscan: fix root proactive reclaim unthrottling unbalanced node mm: memcg: rename and document global_reclaim() mm: kill [add|del]_page_to_lru_list() mm: compaction: convert to use a folio in isolate_migratepages_block() mm: zswap: fix double invalidate with exclusive loads mm: remove unnecessary pagevec includes mm: remove references to pagevec mm: rename invalidate_mapping_pagevec to mapping_try_invalidate mm: remove struct pagevec net: convert sunrpc from pagevec to folio_batch i915: convert i915_gpu_error to use a folio_batch pagevec: rename fbatch_count() mm: remove check_move_unevictable_pages() drm: convert drm_gem_put_pages() to use a folio_batch i915: convert shmem_sg_free_table() to use a folio_batch scatterlist: add sg_set_folio() ... |
||
|
Linus Torvalds
|
582c161cf3 |
hardening updates for v6.5-rc1
- Fix KMSAN vs FORTIFY in strlcpy/strlcat (Alexander Potapenko) - Convert strreplace() to return string start (Andy Shevchenko) - Flexible array conversions (Arnd Bergmann, Wyes Karny, Kees Cook) - Add missing function prototypes seen with W=1 (Arnd Bergmann) - Fix strscpy() kerndoc typo (Arne Welzel) - Replace strlcpy() with strscpy() across many subsystems which were either Acked by respective maintainers or were trivial changes that went ignored for multiple weeks (Azeem Shaikh) - Remove unneeded cc-option test for UBSAN_TRAP (Nick Desaulniers) - Add KUnit tests for strcat()-family - Enable KUnit tests of FORTIFY wrappers under UML - Add more complete FORTIFY protections for strlcat() - Add missed disabling of FORTIFY for all arch purgatories. - Enable -fstrict-flex-arrays=3 globally - Tightening UBSAN_BOUNDS when using GCC - Improve checkpatch to check for strcpy, strncpy, and fake flex arrays - Improve use of const variables in FORTIFY - Add requested struct_size_t() helper for types not pointers - Add __counted_by macro for annotating flexible array size members -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmSbftQWHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJj0MD/9X9jzJzCmsAU+yNldeoAzC84Sk GVU3RBxGcTNysL1gZXynkIgigw7DWc4htMGeSABHHwQRVP65JCH1Kw/VqIkyumbx 9LdX6IklMJb4pRT4PVU3azebV4eNmSjlur2UxMeW54Czm91/6I8RHbJOyAPnOUmo 2oomGdP/hpEHtKR7hgy8Axc6w5ySwQixh2V5sVZG3VbvCS5WKTmTXbs6puuRT5hz iHt7v+7VtEg/Qf1W7J2oxfoghvVBsaRrSLrExWT/oZYh1ZxM7DsCAAoG/IsDgHGA 9LBXiRECgAFThbHVxLvvKZQMXdVk0i8iXLX43XMKC0wTA+NTyH7wlcQQ4RWNMuo8 sfA9Qm9gMArXaf64aymr3Uwn20Zan0391HdlbhOJZAE6v3PPJbleUnM58AzD2d3r 5Lz6AIFBxDImy+3f9iDWgacCT5/PkeiXTHzk9QnKhJyKKtRA58XJxj4q2+rPnGJP n4haXqoxD5FJbxdXiGKk31RS0U5HBug7wkOcUrTqDHUbc/QNU2b7dxTKUx+zYtCU uV5emPzpF4H4z+91WpO47n9gkMAfwV0lt9S2dwS8pxsgqctbmIan+Jgip7rsqZ2G OgLXBsb43eEs+6WgO8tVt/ZHYj9ivGMdrcNcsIfikzNs/xweUJ53k2xSEn2xEa5J cwANDmkL6QQK7yfeeg== =s0j1 -----END PGP SIGNATURE----- Merge tag 'hardening-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening updates from Kees Cook: "There are three areas of note: A bunch of strlcpy()->strscpy() conversions ended up living in my tree since they were either Acked by maintainers for me to carry, or got ignored for multiple weeks (and were trivial changes). The compiler option '-fstrict-flex-arrays=3' has been enabled globally, and has been in -next for the entire devel cycle. This changes compiler diagnostics (though mainly just -Warray-bounds which is disabled) and potential UBSAN_BOUNDS and FORTIFY _warning_ coverage. In other words, there are no new restrictions, just potentially new warnings. Any new FORTIFY warnings we've seen have been fixed (usually in their respective subsystem trees). For more details, see commit |
||
|
Linus Torvalds
|
7ab044a4f4 |
workqueue: Changes for v6.5
* Concurrency-managed per-cpu work items that hog CPUs and delay the execution of other work items are now automatically detected and excluded from concurrency management. Reporting on such work items can also be enabled through a config option. * Added tools/workqueue/wq_monitor.py which improves visibility into workqueue usages and behaviors. * Includes Arnd's minimal fix for gcc-13 enum warning on 32bit compiles. This conflicts with |
||
|
Linus Torvalds
|
bc6cb4d5bc |
Locking changes for v6.5:
- Introduce cmpxchg128() -- aka. the demise of cmpxchg_double().
The cmpxchg128() family of functions is basically & functionally
the same as cmpxchg_double(), but with a saner interface: instead
of a 6-parameter horror that forced u128 - u64/u64-halves layout
details on the interface and exposed users to complexity,
fragility & bugs, use a natural 3-parameter interface with u128 types.
- Restructure the generated atomic headers, and add
kerneldoc comments for all of the generic atomic{,64,_long}_t
operations. Generated definitions are much cleaner now,
and come with documentation.
- Implement lock_set_cmp_fn() on lockdep, for defining an ordering
when taking multiple locks of the same type. This gets rid of
one use of lockdep_set_novalidate_class() in the bcache code.
- Fix raw_cpu_generic_try_cmpxchg() bug due to an unintended
variable shadowing generating garbage code on Clang on certain
ARM builds.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
- Introduce cmpxchg128() -- aka. the demise of cmpxchg_double()
The cmpxchg128() family of functions is basically & functionally the
same as cmpxchg_double(), but with a saner interface.
Instead of a 6-parameter horror that forced u128 - u64/u64-halves
layout details on the interface and exposed users to complexity,
fragility & bugs, use a natural 3-parameter interface with u128
types.
- Restructure the generated atomic headers, and add kerneldoc comments
for all of the generic atomic{,64,_long}_t operations.
The generated definitions are much cleaner now, and come with
documentation.
- Implement lock_set_cmp_fn() on lockdep, for defining an ordering when
taking multiple locks of the same type.
This gets rid of one use of lockdep_set_novalidate_class() in the
bcache code.
- Fix raw_cpu_generic_try_cmpxchg() bug due to an unintended variable
shadowing generating garbage code on Clang on certain ARM builds.
* tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits)
locking/atomic: scripts: fix ${atomic}_dec_if_positive() kerneldoc
percpu: Fix self-assignment of __old in raw_cpu_generic_try_cmpxchg()
locking/atomic: treewide: delete arch_atomic_*() kerneldoc
locking/atomic: docs: Add atomic operations to the driver basic API documentation
locking/atomic: scripts: generate kerneldoc comments
docs: scripts: kernel-doc: accept bitwise negation like ~@var
locking/atomic: scripts: simplify raw_atomic*() definitions
locking/atomic: scripts: simplify raw_atomic_long*() definitions
locking/atomic: scripts: split pfx/name/sfx/order
locking/atomic: scripts: restructure fallback ifdeffery
locking/atomic: scripts: build raw_atomic_long*() directly
locking/atomic: treewide: use raw_atomic*_<op>()
locking/atomic: scripts: add trivial raw_atomic*_<op>()
locking/atomic: scripts: factor out order template generation
locking/atomic: scripts: remove leftover "${mult}"
locking/atomic: scripts: remove bogus order parameter
locking/atomic: xtensa: add preprocessor symbols
locking/atomic: x86: add preprocessor symbols
locking/atomic: sparc: add preprocessor symbols
locking/atomic: sh: add preprocessor symbols
...
|
||
|
Linus Torvalds
|
4baa098a14 |
- Remove the local symbols prefix of the get/put_user() exception
handling symbols so that tools do not get confused by the presence of code belonging to the wrong symbol/not belonging to any symbol - Improve csum_partial()'s performance - Some improvements to the kcpuid tool -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmSawNoACgkQEsHwGGHe VUppXw//YezVoWUUUeTedZl8nRbotwXUlATjsIGcRGe2rZQ/7Ud/NUagWiLmKcpy fAEt+Rd0MbukCNPmTjcw04NN9djs2avVXJS3CCsGNDv/Q6AsBpMcOD4dESxbWIgh NpkNvO3bKRKxtaoJukmxiiIBlMFzXXtKg/fgzB8FeYZDhGMfS7wBlcDeJIdmWWxO T5hykFoc/47e8SPG+K/VLT8hoQCg4KPpi3aSN6n+eq8nnlosABr95JKvgqeq1mXf UPdITYzKHDiny0ZqL2nqsx1MGh24CLc3QCxi5qMDE27NVFokRdfyCiK3DVZvgrNo IA5BsiKJ0Ddeo2F1Weu+rBI7Hhf+OBZlw7WmWpqQ3rEbeEJ4L1iWeeHwrBNzyuZq ftb7OScukusaGAMamhhnErR2GwdP3SBDnnUtsue3qqPK1acYPdFfCJCqXvYsCczQ Pn6eKE2Vlp/3febce7QtZtcz7qlv60UZvj3OpYbECIKcD1/8BWEidquSgPASxs9e WH+MvDlV/tgwzLVAG0Zp5x7DE/VzDPIKtMMRzgx1clSSPyRwzW0jhp+C4/xPsDCT 2lLHZu/ay7O2A1kiH6m0/ULAm/gUzRNsKCNRlP/HVVXl7+U6lZeZR3D14QOPl8n8 F1W/seOCLxnxx8dVF/hHmirDQuwSjF9vRewmWvvOUgzmYBid8j0= =6U2J -----END PGP SIGNATURE----- Merge tag 'x86_misc_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull misc x86 updates from Borislav Petkov: - Remove the local symbols prefix of the get/put_user() exception handling symbols so that tools do not get confused by the presence of code belonging to the wrong symbol/not belonging to any symbol - Improve csum_partial()'s performance - Some improvements to the kcpuid tool * tag 'x86_misc_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/lib: Make get/put_user() exception handling a visible symbol x86/csum: Fix clang -Wuninitialized in csum_partial() x86/csum: Improve performance of `csum_partial` tools/x86/kcpuid: Add .gitignore tools/x86/kcpuid: Dump the correct CPUID function in error |
||
|
Linus Torvalds
|
9ba92dc1de |
linux-kselftest-kunit-6.5-rc1
This KUnit update for Linux 6.5-rc1 consists of: - kunit_add_action() API to defer a call until test exit. - Update document to add kunit_add_action() usage notes. - Changes to always run cleanup from a test kthread. - Documentation updates to clarify cleanup usage - assertions should not be used in cleanup - Documentation update to clearly indicate that exit functions should run even if init fails - Several fixes and enhancements to existing tests. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmSYWVcACgkQCwJExA0N QxwbxA//eGx3xkFN9CWb8ryBTZhs8DZrzc+JlqWEDpk7GQTSlErd3DtInzY0jM2a GWKV4BJCX6uI2JiyG+cof7nWtnv//L4LxRCpYlY/n7sJeYwZyd1s745nM8lfYTh9 UtAHPmZplAqMCOHgfeUQ6wMxiUc7VGC8Spu82nFzRuSLzf+q5BpK7LPHSJiJ4ea+ kkM+5ygHzBW2cfvULIglb8jQPgPRoVR4RhmmHMF7CYTZQkrU/z7ZZlFTx7LowrxC p2zWVuH0KJONn4L8rB4QI8oqCZejU2qV2bealCnKY3/atSLUvrnYxyPQbbxCNqmi EY1XyQFbGsvmgy77IeEXKWhiUmAfD7/Hcvh8M/vLk2wHzQG8+428DAQ7sGRHHqZX 6DvDUo8Z2TE7585glxkbiXhuGsY0y8dkeNURw4URys+TvucNHGrmDfKp0UIEAJW1 iqopMGmM/MDfV5gPUlUEg6jKhTkZOn6OlVwZ8moUaAeAKV7qGGuMrNSZJ6Jw1Gc9 LjI2ma3uZ3hOahyqwU+zwO4CeTJHOq6JjXJZt9aiGwqJPrbjvVCUtikz4QSptU2z vCjVEV/e7tTGXl+suDb48cu/pyh+z3t5/Gz7eOHMId7S3MENTauxyBXDm1WzoV0c HuBEsmWXetYuXXkh66LJ/8fzUeWvaGrQPM9hXi2fn1hmPLxOnxw= =rYT5 -----END PGP SIGNATURE----- Merge tag 'linux-kselftest-kunit-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull KUnit updates from Shuah Khan: - kunit_add_action() API to defer a call until test exit - Update document to add kunit_add_action() usage notes - Changes to always run cleanup from a test kthread - Documentation updates to clarify cleanup usage (assertions should not be used in cleanup) - Documentation update to clearly indicate that exit functions should run even if init fails - Several fixes and enhancements to existing tests * tag 'linux-kselftest-kunit-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: MAINTAINERS: Add source tree entry for kunit Documentation: kunit: Rename references to kunit_abort() kunit: Move kunit_abort() call out of kunit_do_failed_assertion() kunit: Fix obsolete name in documentation headers (func->action) Documentation: Kunit: add MODULE_LICENSE to sample code kunit: Update kunit_print_ok_not_ok function kunit: Fix reporting of the skipped parameterized tests kunit/test: Add example test showing parameterized testing Documentation: kunit: Add usage notes for kunit_add_action() kunit: kmalloc_array: Use kunit_add_action() kunit: executor_test: Use kunit_add_action() kunit: Add kunit_add_action() to defer a call until test exit kunit: example: Provide example exit functions Documentation: kunit: Warn that exit functions run even if init fails Documentation: kunit: Note that assertions should not be used in cleanup kunit: Always run cleanup from a test kthread Documentation: kunit: Modular tests should not depend on KUNIT=y kunit: tool: undo type subscripts for subprocess.Popen |
||
|
Jakub Kicinski
|
3674fbf045 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Merge in late fixes to prepare for the 6.5 net-next PR. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Linus Torvalds
|
cef2dd7653 |
A single update for debug objects:
- Recheck whether debug objects is enabled before reporting a problem to
avoid spamming the logs with messages which are caused by a concurrent
OOM.
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Merge tag 'core-debugobjects-2023-06-26' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull debugobjects update from Thomas Gleixner:
"A single update for debug objects:
- Recheck whether debug objects is enabled before reporting a problem
to avoid spamming the logs with messages which are caused by a
concurrent OOM"
* tag 'core-debugobjects-2023-06-26' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tip/tip:
debugobjects: Recheck debug_objects_enabled before reporting
|
||
|
Linus Torvalds
|
a0433f8cae |
for-6.5/block-2023-06-23
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Merge tag 'for-6.5/block-2023-06-23' of git://git.kernel.dk/linux
Pull block updates from Jens Axboe:
- NVMe pull request via Keith:
- Various cleanups all around (Irvin, Chaitanya, Christophe)
- Better struct packing (Christophe JAILLET)
- Reduce controller error logs for optional commands (Keith)
- Support for >=64KiB block sizes (Daniel Gomez)
- Fabrics fixes and code organization (Max, Chaitanya, Daniel
Wagner)
- bcache updates via Coly:
- Fix a race at init time (Mingzhe Zou)
- Misc fixes and cleanups (Andrea, Thomas, Zheng, Ye)
- use page pinning in the block layer for dio (David)
- convert old block dio code to page pinning (David, Christoph)
- cleanups for pktcdvd (Andy)
- cleanups for rnbd (Guoqing)
- use the unchecked __bio_add_page() for the initial single page
additions (Johannes)
- fix overflows in the Amiga partition handling code (Michael)
- improve mq-deadline zoned device support (Bart)
- keep passthrough requests out of the IO schedulers (Christoph, Ming)
- improve support for flush requests, making them less special to deal
with (Christoph)
- add bdev holder ops and shutdown methods (Christoph)
- fix the name_to_dev_t() situation and use cases (Christoph)
- decouple the block open flags from fmode_t (Christoph)
- ublk updates and cleanups, including adding user copy support (Ming)
- BFQ sanity checking (Bart)
- convert brd from radix to xarray (Pankaj)
- constify various structures (Thomas, Ivan)
- more fine grained persistent reservation ioctl capability checks
(Jingbo)
- misc fixes and cleanups (Arnd, Azeem, Demi, Ed, Hengqi, Hou, Jan,
Jordy, Li, Min, Yu, Zhong, Waiman)
* tag 'for-6.5/block-2023-06-23' of git://git.kernel.dk/linux: (266 commits)
scsi/sg: don't grab scsi host module reference
ext4: Fix warning in blkdev_put()
block: don't return -EINVAL for not found names in devt_from_devname
cdrom: Fix spectre-v1 gadget
block: Improve kernel-doc headers
blk-mq: don't insert passthrough request into sw queue
bsg: make bsg_class a static const structure
ublk: make ublk_chr_class a static const structure
aoe: make aoe_class a static const structure
block/rnbd: make all 'class' structures const
block: fix the exclusive open mask in disk_scan_partitions
block: add overflow checks for Amiga partition support
block: change all __u32 annotations to __be32 in affs_hardblocks.h
block: fix signed int overflow in Amiga partition support
block: add capacity validation in bdev_add_partition()
block: fine-granular CAP_SYS_ADMIN for Persistent Reservation
block: disallow Persistent Reservation on partitions
reiserfs: fix blkdev_put() warning from release_journal_dev()
block: fix wrong mode for blkdev_get_by_dev() from disk_scan_partitions()
block: document the holder argument to blkdev_get_by_path
...
|
||
|
Linus Torvalds
|
3eccc0c886 |
for-6.5/splice-2023-06-23
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Merge tag 'for-6.5/splice-2023-06-23' of git://git.kernel.dk/linux
Pull splice updates from Jens Axboe:
"This kills off ITER_PIPE to avoid a race between truncate,
iov_iter_revert() on the pipe and an as-yet incomplete DMA to a bio
with unpinned/unref'ed pages from an O_DIRECT splice read. This causes
memory corruption.
Instead, we either use (a) filemap_splice_read(), which invokes the
buffered file reading code and splices from the pagecache into the
pipe; (b) copy_splice_read(), which bulk-allocates a buffer, reads
into it and then pushes the filled pages into the pipe; or (c) handle
it in filesystem-specific code.
Summary:
- Rename direct_splice_read() to copy_splice_read()
- Simplify the calculations for the number of pages to be reclaimed
in copy_splice_read()
- Turn do_splice_to() into a helper, vfs_splice_read(), so that it
can be used by overlayfs and coda to perform the checks on the
lower fs
- Make vfs_splice_read() jump to copy_splice_read() to handle
direct-I/O and DAX
- Provide shmem with its own splice_read to handle non-existent pages
in the pagecache. We don't want a ->read_folio() as we don't want
to populate holes, but filemap_get_pages() requires it
- Provide overlayfs with its own splice_read to call down to a lower
layer as overlayfs doesn't provide ->read_folio()
- Provide coda with its own splice_read to call down to a lower layer
as coda doesn't provide ->read_folio()
- Direct ->splice_read to copy_splice_read() in tty, procfs, kernfs
and random files as they just copy to the output buffer and don't
splice pages
- Provide wrappers for afs, ceph, ecryptfs, ext4, f2fs, nfs, ntfs3,
ocfs2, orangefs, xfs and zonefs to do locking and/or revalidation
- Make cifs use filemap_splice_read()
- Replace pointers to generic_file_splice_read() with pointers to
filemap_splice_read() as DIO and DAX are handled in the caller;
filesystems can still provide their own alternate ->splice_read()
op
- Remove generic_file_splice_read()
- Remove ITER_PIPE and its paraphernalia as generic_file_splice_read
was the only user"
* tag 'for-6.5/splice-2023-06-23' of git://git.kernel.dk/linux: (31 commits)
splice: kdoc for filemap_splice_read() and copy_splice_read()
iov_iter: Kill ITER_PIPE
splice: Remove generic_file_splice_read()
splice: Use filemap_splice_read() instead of generic_file_splice_read()
cifs: Use filemap_splice_read()
trace: Convert trace/seq to use copy_splice_read()
zonefs: Provide a splice-read wrapper
xfs: Provide a splice-read wrapper
orangefs: Provide a splice-read wrapper
ocfs2: Provide a splice-read wrapper
ntfs3: Provide a splice-read wrapper
nfs: Provide a splice-read wrapper
f2fs: Provide a splice-read wrapper
ext4: Provide a splice-read wrapper
ecryptfs: Provide a splice-read wrapper
ceph: Provide a splice-read wrapper
afs: Provide a splice-read wrapper
9p: Add splice_read wrapper
net: Make sock_splice_read() use copy_splice_read() by default
tty, proc, kernfs, random: Use copy_splice_read()
...
|
||
|
Jeremy Sowden
|
6f67fbf819 |
lib/ts_bm: reset initial match offset for every block of text
The `shift` variable which indicates the offset in the string at which
to start matching the pattern is initialized to `bm->patlen - 1`, but it
is not reset when a new block is retrieved. This means the implemen-
tation may start looking at later and later positions in each successive
block and miss occurrences of the pattern at the beginning. E.g.,
consider a HTTP packet held in a non-linear skb, where the HTTP request
line occurs in the second block:
[... 52 bytes of packet headers ...]
GET /bmtest HTTP/1.1\r\nHost: www.example.com\r\n\r\n
and the pattern is "GET /bmtest".
Once the first block comprising the packet headers has been examined,
`shift` will be pointing to somewhere near the end of the block, and so
when the second block is examined the request line at the beginning will
be missed.
Reinitialize the variable for each new block.
Fixes:
|
||
|
Jakub Kicinski
|
a685d0df75 |
bpf-next-for-netdev
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZJX+ygAKCRDbK58LschI g0/2AQDHg12smf9mPfK9wOFDNRIIX8r2iufB8LUFQMzCwltN6gEAkAdkAyfbof7P TMaNUiHABijAFtChxoSI35j3OOSRrwE= =GJgN -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2023-06-23 We've added 49 non-merge commits during the last 24 day(s) which contain a total of 70 files changed, 1935 insertions(+), 442 deletions(-). The main changes are: 1) Extend bpf_fib_lookup helper to allow passing the route table ID, from Louis DeLosSantos. 2) Fix regsafe() in verifier to call check_ids() for scalar registers, from Eduard Zingerman. 3) Extend the set of cpumask kfuncs with bpf_cpumask_first_and() and a rework of bpf_cpumask_any*() kfuncs. Additionally, add selftests, from David Vernet. 4) Fix socket lookup BPF helpers for tc/XDP to respect VRF bindings, from Gilad Sever. 5) Change bpf_link_put() to use workqueue unconditionally to fix it under PREEMPT_RT, from Sebastian Andrzej Siewior. 6) Follow-ups to address issues in the bpf_refcount shared ownership implementation, from Dave Marchevsky. 7) A few general refactorings to BPF map and program creation permissions checks which were part of the BPF token series, from Andrii Nakryiko. 8) Various fixes for benchmark framework and add a new benchmark for BPF memory allocator to BPF selftests, from Hou Tao. 9) Documentation improvements around iterators and trusted pointers, from Anton Protopopov. 10) Small cleanup in verifier to improve allocated object check, from Daniel T. Lee. 11) Improve performance of bpf_xdp_pointer() by avoiding access to shared_info when XDP packet does not have frags, from Jesper Dangaard Brouer. 12) Silence a harmless syzbot-reported warning in btf_type_id_size(), from Yonghong Song. 13) Remove duplicate bpfilter_umh_cleanup in favor of umd_cleanup_helper, from Jarkko Sakkinen. 14) Fix BPF selftests build for resolve_btfids under custom HOSTCFLAGS, from Viktor Malik. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (49 commits) bpf, docs: Document existing macros instead of deprecated bpf, docs: BPF Iterator Document selftests/bpf: Fix compilation failure for prog vrf_socket_lookup selftests/bpf: Add vrf_socket_lookup tests bpf: Fix bpf socket lookup from tc/xdp to respect socket VRF bindings bpf: Call __bpf_sk_lookup()/__bpf_skc_lookup() directly via TC hookpoint bpf: Factor out socket lookup functions for the TC hookpoint. selftests/bpf: Set the default value of consumer_cnt as 0 selftests/bpf: Ensure that next_cpu() returns a valid CPU number selftests/bpf: Output the correct error code for pthread APIs selftests/bpf: Use producer_cnt to allocate local counter array xsk: Remove unused inline function xsk_buff_discard() bpf: Keep BPF_PROG_LOAD permission checks clear of validations bpf: Centralize permissions checks for all BPF map types bpf: Inline map creation logic in map_create() function bpf: Move unprivileged checks into map_create() and bpf_prog_load() bpf: Remove in_atomic() from bpf_link_put(). selftests/bpf: Verify that check_ids() is used for scalars in regsafe() bpf: Verify scalar ids mapping in regsafe() using check_ids() selftests/bpf: Check if mark_chain_precision() follows scalar ids ... ==================== Link: https://lore.kernel.org/r/20230623211256.8409-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Lukas Bulwahn
|
a8992d8ad7 |
watchdog/hardlockup: fix typo in config HARDLOCKUP_DETECTOR_PREFER_BUDDY
Commit |
||
|
Ben Dooks
|
875e0c31f8 |
devres: show which resource was invalid in __devm_ioremap_resource()
The other error prints in this call show the resource which wsan't valid, so add this to the first print when it checks for basic validity of the resource. Link: https://lkml.kernel.org/r/20230621163050.477668-1-ben.dooks@codethink.co.uk Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Andrew Morton
|
63773d2b59 | Merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes. | ||
|
Randy Dunlap
|
839cad5fa5 |
cpumask: fix function description kernel-doc notation
Use kernel-doc notation for the function description to prevent a warning: lib/cpumask.c:160: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * Returns an arbitrary cpu within srcp1 & srcp2. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
||
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Yury Norov
|
c1d2ba10f5 |
lib/bitmap: drop optimization of bitmap_{from,to}_arr64
bitmap_{from,to}_arr64() optimization is overly optimistic on 32-bit LE
architectures when it's wired to bitmap_copy_clear_tail().
bitmap_copy_clear_tail() takes care of unused bits in the bitmap up to
the next word boundary. But on 32-bit machines when copying bits from
bitmap to array of 64-bit words, it's expected that the unused part of
a recipient array must be cleared up to 64-bit boundary, so the last 4
bytes may stay untouched when nbits % 64 <= 32.
While the copying part of the optimization works correct, that clear-tail
trick makes corresponding tests reasonably fail:
test_bitmap: bitmap_to_arr64(nbits == 1): tail is not safely cleared: 0xa5a5a5a500000001 (must be 0x0000000000000001)
Fix it by removing bitmap_{from,to}_arr64() optimization for 32-bit LE
arches.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/lkml/20230225184702.GA3587246@roeck-us.net/
Fixes:
|
||
|
Yury Norov
|
c4c14c2906 |
lib/test_bitmap: increment failure counter properly
The tests that don't use expect_eq() macro to determine that a test is failured must increment failed_tests explicitly. Reported-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/lkml/20230225184702.GA3587246@roeck-us.net/ Signed-off-by: Yury Norov <yury.norov@gmail.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com> |
||
|
Petr Mladek
|
7ca8fe94aa |
watchdog/hardlockup: define HARDLOCKUP_DETECTOR_ARCH
The HAVE_ prefix means that the code could be enabled. Add another variable for HAVE_HARDLOCKUP_DETECTOR_ARCH without this prefix. It will be set when it should be built. It will make it compatible with the other hardlockup detectors. The change allows to clean up dependencies of PPC_WATCHDOG and HAVE_HARDLOCKUP_DETECTOR_PERF definitions for powerpc. As a result HAVE_HARDLOCKUP_DETECTOR_PERF has the same dependencies on arm, x86, powerpc architectures. Link: https://lkml.kernel.org/r/20230616150618.6073-7-pmladek@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Petr Mladek
|
47f4cb4339 |
watchdog/sparc64: define HARDLOCKUP_DETECTOR_SPARC64
The HAVE_ prefix means that the code could be enabled. Add another variable for HAVE_HARDLOCKUP_DETECTOR_SPARC64 without this prefix. It will be set when it should be built. It will make it compatible with the other hardlockup detectors. Before, it is far from obvious that the SPARC64 variant is actually used: $> make ARCH=sparc64 defconfig $> grep HARDLOCKUP_DETECTOR .config CONFIG_HAVE_HARDLOCKUP_DETECTOR_BUDDY=y CONFIG_HAVE_HARDLOCKUP_DETECTOR_SPARC64=y After, it is more clear: $> make ARCH=sparc64 defconfig $> grep HARDLOCKUP_DETECTOR .config CONFIG_HAVE_HARDLOCKUP_DETECTOR_BUDDY=y CONFIG_HAVE_HARDLOCKUP_DETECTOR_SPARC64=y CONFIG_HARDLOCKUP_DETECTOR_SPARC64=y Link: https://lkml.kernel.org/r/20230616150618.6073-6-pmladek@suse.com Signed-off-by: Petr Mladek <pmladek@suse.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Petr Mladek
|
a5fcc2367e |
watchdog/hardlockup: make HAVE_NMI_WATCHDOG sparc64-specific
There are several hardlockup detector implementations and several Kconfig values which allow selection and build of the preferred one. CONFIG_HARDLOCKUP_DETECTOR was introduced by the commit |
||
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Petr Mladek
|
1356d0b966 |
watchdog/hardlockup: make the config checks more straightforward
There are four possible variants of hardlockup detectors:
+ buddy: available when SMP is set.
+ perf: available when HAVE_HARDLOCKUP_DETECTOR_PERF is set.
+ arch-specific: available when HAVE_HARDLOCKUP_DETECTOR_ARCH is set.
+ sparc64 special variant: available when HAVE_NMI_WATCHDOG is set
and HAVE_HARDLOCKUP_DETECTOR_ARCH is not set.
The check for the sparc64 variant is more complicated because
HAVE_NMI_WATCHDOG is used to #ifdef code used by both arch-specific
and sparc64 specific variant. Therefore it is automatically
selected with HAVE_HARDLOCKUP_DETECTOR_ARCH.
This complexity is partly hidden in HAVE_HARDLOCKUP_DETECTOR_NON_ARCH.
It reduces the size of some checks but it makes them harder to follow.
Finally, the other temporary variable HARDLOCKUP_DETECTOR_NON_ARCH
is used to re-compute HARDLOCKUP_DETECTOR_PERF/BUDDY when the global
HARDLOCKUP_DETECTOR switch is enabled/disabled.
Make the logic more straightforward by the following changes:
+ Better explain the role of HAVE_HARDLOCKUP_DETECTOR_ARCH and
HAVE_NMI_WATCHDOG in comments.
+ Add HAVE_HARDLOCKUP_DETECTOR_BUDDY so that there is separate
HAVE_* for all four hardlockup detector variants.
Use it in the other conditions instead of SMP. It makes it
clear that it is about the buddy detector.
+ Open code HAVE_HARDLOCKUP_DETECTOR_NON_ARCH in HARDLOCKUP_DETECTOR
and HARDLOCKUP_DETECTOR_PREFER_BUDDY. It helps to understand
the conditions between the four hardlockup detector variants.
+ Define the exact conditions when HARDLOCKUP_DETECTOR_PERF/BUDDY
can be enabled. It explains the dependency on the other
hardlockup detector variants.
Also it allows to remove HARDLOCKUP_DETECTOR_NON_ARCH by using "imply".
It triggers re-evaluating HARDLOCKUP_DETECTOR_PERF/BUDDY when
the global HARDLOCKUP_DETECTOR switch is changed.
+ Add dependency on HARDLOCKUP_DETECTOR so that the affected variables
disappear when the hardlockup detectors are disabled.
Another nice side effect is that HARDLOCKUP_DETECTOR_PREFER_BUDDY
value is not preserved when the global switch is disabled.
The user has to make the decision again when it gets re-enabled.
Link: https://lkml.kernel.org/r/20230616150618.6073-3-pmladek@suse.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
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Petr Mladek
|
4917a25f83 |
watchdog/hardlockup: sort hardlockup detector related config values a logical way
Patch series "watchdog/hardlockup: Cleanup configuration of hardlockup
detectors", v2.
Clean up watchdog Kconfig after introducing the buddy detector.
This patch (of 6):
There are four possible variants of hardlockup detectors:
+ buddy: available when SMP is set.
+ perf: available when HAVE_HARDLOCKUP_DETECTOR_PERF is set.
+ arch-specific: available when HAVE_HARDLOCKUP_DETECTOR_ARCH is set.
+ sparc64 special variant: available when HAVE_NMI_WATCHDOG is set
and HAVE_HARDLOCKUP_DETECTOR_ARCH is not set.
Only one hardlockup detector can be compiled in. The selection is done
using quite complex dependencies between several CONFIG variables.
The following patches will try to make it more straightforward.
As a first step, reorder the definitions of the various CONFIG variables.
The logical order is:
1. HAVE_* variables define available variants. They are typically
defined in the arch/ config files.
2. HARDLOCKUP_DETECTOR y/n variable defines whether the hardlockup
detector is enabled at all.
3. HARDLOCKUP_DETECTOR_PREFER_BUDDY y/n variable defines whether
the buddy detector should be preferred over the perf one.
Note that the arch specific variants are always preferred when
available.
4. HARDLOCKUP_DETECTOR_PERF/BUDDY variables define whether the given
detector is enabled in the end.
5. HAVE_HARDLOCKUP_DETECTOR_NON_ARCH and HARDLOCKUP_DETECTOR_NON_ARCH
are temporary variables that are going to be removed in
a followup patch.
This is a preparation step for further cleanup. It will change the logic
without shuffling the definitions.
This change temporary breaks the C-like ordering where the variables are
declared or defined before they are used. It is not really needed for
Kconfig. Also the following patches will rework the logic so that
the ordering will be C-like in the end.
The patch just shuffles the definitions. It should not change the existing
behavior.
Link: https://lkml.kernel.org/r/20230616150618.6073-1-pmladek@suse.com
Link: https://lkml.kernel.org/r/20230616150618.6073-2-pmladek@suse.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Douglas Anderson
|
7ece48b7b4 |
watchdog/buddy: simplify the dependency for HARDLOCKUP_DETECTOR_PREFER_BUDDY
The dependency for HARDLOCKUP_DETECTOR_PREFER_BUDDY was more complicated than it needed to be. If the "perf" detector is available and we have SMP then we have a choice, so enable the config based on just those two config items. Link: https://lkml.kernel.org/r/20230526184139.8.I49d5b483336b65b8acb1e5066548a05260caf809@changeid Signed-off-by: Douglas Anderson <dianders@chromium.org> Suggested-by: Petr Mladek <pmladek@suse.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Joel Granados
|
f2e7a6265e |
test_sysclt: Test for registering a mount point
Test that target gets created by register_sysctl_mount_point and that no additional target can be created "on top" of a permanently empty sysctl table. Create a mount point target (mnt) in the sysctl test driver; try to create another on top of that (mnt_error). Output an error if "mnt_error" is present when we run the sysctl selftests. Signed-off-by: Joel Granados <j.granados@samsung.com> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
||
|
Joel Granados
|
3557643859 |
test_sysctl: Add an unregister sysctl test
Add a test that checks that the unregistered directory is removed from /proc/sys/debug Signed-off-by: Joel Granados <j.granados@samsung.com> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
||
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Joel Granados
|
e009bd5efe |
test_sysctl: Group node sysctl test under one func
Preparation commit to add a new type of test to test_sysctl.c. We want to differentiate between node and (sub)directory tests. Signed-off-by: Joel Granados <j.granados@samsung.com> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
||
|
Christoph Hellwig
|
84bd06c632 |
iov_iter: remove iov_iter_get_pages and iov_iter_get_pages_alloc
Now that the direct I/O helpers have switched to use iov_iter_extract_pages, these helpers are unused. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christian Brauner <brauner@kernel.org> Reviewed-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20230614140341.521331-5-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Jakub Kicinski
|
173780ff18 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: include/linux/mlx5/driver.h |
||
|
Mirsad Goran Todorovac
|
7dae593cd2 |
test_firmware: return ENOMEM instead of ENOSPC on failed memory allocation
In a couple of situations like
name = kstrndup(buf, count, GFP_KERNEL);
if (!name)
return -ENOSPC;
the error is not actually "No space left on device", but "Out of memory".
It is semantically correct to return -ENOMEM in all failed kstrndup()
and kzalloc() cases in this driver, as it is not a problem with disk
space, but with kernel memory allocator failing allocation.
The semantically correct should be:
name = kstrndup(buf, count, GFP_KERNEL);
if (!name)
return -ENOMEM;
Cc: Dan Carpenter <error27@gmail.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Kees Cook <keescook@chromium.org>
Cc: "Luis R. Rodriguez" <mcgrof@ruslug.rutgers.edu>
Cc: Scott Branden <sbranden@broadcom.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Brian Norris <briannorris@chromium.org>
Fixes:
|
||
|
Arnd Bergmann
|
3de13550a2 |
raid6: neon: add missing prototypes
The raid6 syndrome functions are generated for different sizes and have no generic prototype, while in the inner functions have a prototype in a header that cannot be included from the correct file. In both cases, the compiler warns about missing prototypes: lib/raid6/recov_neon_inner.c:27:6: warning: no previous prototype for '__raid6_2data_recov_neon' [-Wmissing-prototypes] lib/raid6/recov_neon_inner.c:77:6: warning: no previous prototype for '__raid6_datap_recov_neon' [-Wmissing-prototypes] lib/raid6/neon1.c:56:6: warning: no previous prototype for 'raid6_neon1_gen_syndrome_real' [-Wmissing-prototypes] lib/raid6/neon1.c:86:6: warning: no previous prototype for 'raid6_neon1_xor_syndrome_real' [-Wmissing-prototypes] lib/raid6/neon2.c:56:6: warning: no previous prototype for 'raid6_neon2_gen_syndrome_real' [-Wmissing-prototypes] lib/raid6/neon2.c:97:6: warning: no previous prototype for 'raid6_neon2_xor_syndrome_real' [-Wmissing-prototypes] lib/raid6/neon4.c:56:6: warning: no previous prototype for 'raid6_neon4_gen_syndrome_real' [-Wmissing-prototypes] lib/raid6/neon4.c:119:6: warning: no previous prototype for 'raid6_neon4_xor_syndrome_real' [-Wmissing-prototypes] lib/raid6/neon8.c:56:6: warning: no previous prototype for 'raid6_neon8_gen_syndrome_real' [-Wmissing-prototypes] lib/raid6/neon8.c:163:6: warning: no previous prototype for 'raid6_neon8_xor_syndrome_real' [-Wmissing-prototypes] Add a new header file that contains the prototypes for both to avoid the warnings. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Song Liu <song@kernel.org> Link: https://lore.kernel.org/r/20230517132220.937200-1-arnd@kernel.org |
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|
Linus Torvalds
|
fb054096ae |
19 hotfixes. 14 are cc:stable and the remainder address issues which were
introduced during this -rc cycle or which were considered inappropriate for a backport. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZIdw7QAKCRDdBJ7gKXxA jki4AQCygi1UoqVPq4N/NzJbv2GaNDXNmcJIoLvPpp3MYFhucAEAtQNzAYO9z6CT iLDMosnuh+1KLTaKNGL5iak3NAxnxQw= =mTdI -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2023-06-12-12-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "19 hotfixes. 14 are cc:stable and the remainder address issues which were introduced during this development cycle or which were considered inappropriate for a backport" * tag 'mm-hotfixes-stable-2023-06-12-12-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: zswap: do not shrink if cgroup may not zswap page cache: fix page_cache_next/prev_miss off by one ocfs2: check new file size on fallocate call mailmap: add entry for John Keeping mm/damon/core: fix divide error in damon_nr_accesses_to_accesses_bp() epoll: ep_autoremove_wake_function should use list_del_init_careful mm/gup_test: fix ioctl fail for compat task nilfs2: reject devices with insufficient block count ocfs2: fix use-after-free when unmounting read-only filesystem lib/test_vmalloc.c: avoid garbage in page array nilfs2: fix possible out-of-bounds segment allocation in resize ioctl riscv/purgatory: remove PGO flags powerpc/purgatory: remove PGO flags x86/purgatory: remove PGO flags kexec: support purgatories with .text.hot sections mm/uffd: allow vma to merge as much as possible mm/uffd: fix vma operation where start addr cuts part of vma radix-tree: move declarations to header nilfs2: fix incomplete buffer cleanup in nilfs_btnode_abort_change_key() |
||
|
Lorenzo Stoakes
|
9f6c6ad161 |
lib/test_vmalloc.c: avoid garbage in page array
It turns out that alloc_pages_bulk_array() does not treat the page_array
parameter as an output parameter, but rather reads the array and skips any
entries that have already been allocated.
This is somewhat unexpected and breaks this test, as we allocate the pages
array uninitialised on the assumption it will be overwritten.
As a result, the test was referencing uninitialised data and causing the
PFN to not be valid and thus a WARN_ON() followed by a null pointer deref
and panic.
In addition, this is an array of pointers not of struct page objects, so we
need only allocate an array with elements of pointer size.
We solve both problems by simply using kcalloc() and referencing
sizeof(struct page *) rather than sizeof(struct page).
Link: https://lkml.kernel.org/r/20230524082424.10022-1-lstoakes@gmail.com
Fixes:
|
||
|
Arnd Bergmann
|
bde1597d0f |
radix-tree: move declarations to header
The xarray.c file contains the only call to radix_tree_node_rcu_free(), and it comes with its own extern declaration for it. This means the function definition causes a missing-prototype warning: lib/radix-tree.c:288:6: error: no previous prototype for 'radix_tree_node_rcu_free' [-Werror=missing-prototypes] Instead, move the declaration for this function to a new header that can be included by both, and do the same for the radix_tree_node_cachep variable that has the same underlying problem but does not cause a warning with gcc. [zhangpeng.00@bytedance.com: fix building radix tree test suite] Link: https://lkml.kernel.org/r/20230521095450.21332-1-zhangpeng.00@bytedance.com Link: https://lkml.kernel.org/r/20230516194212.548910-1-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Douglas Anderson
|
1f423c905a |
watchdog/hardlockup: detect hard lockups using secondary (buddy) CPUs
Implement a hardlockup detector that doesn't doesn't need any extra arch-specific support code to detect lockups. Instead of using something arch-specific we will use the buddy system, where each CPU watches out for another one. Specifically, each CPU will use its softlockup hrtimer to check that the next CPU is processing hrtimer interrupts by verifying that a counter is increasing. NOTE: unlike the other hard lockup detectors, the buddy one can't easily show what's happening on the CPU that locked up just by doing a simple backtrace. It relies on some other mechanism in the system to get information about the locked up CPUs. This could be support for NMI backtraces like [1], it could be a mechanism for printing the PC of locked CPUs at panic time like [2] / [3], or it could be something else. Even though that means we still rely on arch-specific code, this arch-specific code seems to often be implemented even on architectures that don't have a hardlockup detector. This style of hardlockup detector originated in some downstream Android trees and has been rebased on / carried in ChromeOS trees for quite a long time for use on arm and arm64 boards. Historically on these boards we've leveraged mechanism [2] / [3] to get information about hung CPUs, but we could move to [1]. Although the original motivation for the buddy system was for use on systems without an arch-specific hardlockup detector, it can still be useful to use even on systems that _do_ have an arch-specific hardlockup detector. On x86, for instance, there is a 24-part patch series [4] in progress switching the arch-specific hard lockup detector from a scarce perf counter to a less-scarce hardware resource. Potentially the buddy system could be a simpler alternative to free up the perf counter but still get hard lockup detection. Overall, pros (+) and cons (-) of the buddy system compared to an arch-specific hardlockup detector (which might be implemented using perf): + The buddy system is usable on systems that don't have an arch-specific hardlockup detector, like arm32 and arm64 (though it's being worked on for arm64 [5]). + The buddy system may free up scarce hardware resources. + If a CPU totally goes out to lunch (can't process NMIs) the buddy system could still detect the problem (though it would be unlikely to be able to get a stack trace). + The buddy system uses the same timer function to pet the hardlockup detector on the running CPU as it uses to detect hardlockups on other CPUs. Compared to other hardlockup detectors, this means it generates fewer interrupts and thus is likely better able to let CPUs stay idle longer. - If all CPUs are hard locked up at the same time the buddy system can't detect it. - If we don't have SMP we can't use the buddy system. - The buddy system needs an arch-specific mechanism (possibly NMI backtrace) to get info about the locked up CPU. [1] https://lore.kernel.org/r/20230419225604.21204-1-dianders@chromium.org [2] https://issuetracker.google.com/172213129 [3] https://docs.kernel.org/trace/coresight/coresight-cpu-debug.html [4] https://lore.kernel.org/lkml/20230301234753.28582-1-ricardo.neri-calderon@linux.intel.com/ [5] https://lore.kernel.org/linux-arm-kernel/20220903093415.15850-1-lecopzer.chen@mediatek.com/ Link: https://lkml.kernel.org/r/20230519101840.v5.14.I6bf789d21d0c3d75d382e7e51a804a7a51315f2c@changeid Signed-off-by: Colin Cross <ccross@android.com> Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Guenter Roeck <groeck@chromium.org> Signed-off-by: Tzung-Bi Shih <tzungbi@chromium.org> Signed-off-by: Douglas Anderson <dianders@chromium.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chen-Yu Tsai <wens@csie.org> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Daniel Thompson <daniel.thompson@linaro.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Ian Rogers <irogers@google.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masayoshi Mizuma <msys.mizuma@gmail.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Pingfan Liu <kernelfans@gmail.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: "Ravi V. Shankar" <ravi.v.shankar@intel.com> Cc: Ricardo Neri <ricardo.neri@intel.com> Cc: Stephane Eranian <eranian@google.com> Cc: Stephen Boyd <swboyd@chromium.org> Cc: Sumit Garg <sumit.garg@linaro.org> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Arnd Bergmann
|
0044444861 |
decompressor: provide missing prototypes
The entry points for the decompressor don't always have a prototype included in the .c file: lib/decompress_inflate.c:42:17: error: no previous prototype for '__gunzip' [-Werror=missing-prototypes] lib/decompress_unxz.c:251:17: error: no previous prototype for 'unxz' [-Werror=missing-prototypes] lib/decompress_unzstd.c:331:17: error: no previous prototype for 'unzstd' [-Werror=missing-prototypes] Include the correct headers for unxz and unzstd, and mark the inflate function above as unconditionally 'static' to avoid these warnings. Link: https://lkml.kernel.org/r/20230517131936.936840-1-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Nick Terrell <terrelln@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Arnd Bergmann
|
23108f6aac |
kunit: include debugfs header file
An extra #include statement is needed to ensure the prototypes for debugfs interfaces are visible, avoiding this warning: lib/kunit/debugfs.c:28:6: error: no previous prototype for 'kunit_debugfs_cleanup' [-Werror=missing-prototypes] lib/kunit/debugfs.c:33:6: error: no previous prototype for 'kunit_debugfs_init' [-Werror=missing-prototypes] lib/kunit/debugfs.c:102:6: error: no previous prototype for 'kunit_debugfs_create_suite' [-Werror=missing-prototypes] lib/kunit/debugfs.c:118:6: error: no previous prototype for 'kunit_debugfs_destroy_suite' [-Werror=missing-prototypes] Link: https://lkml.kernel.org/r/20230517131102.934196-10-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: David Gow <davidgow@google.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Eric Paris <eparis@redhat.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Moore <paul@paul-moore.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Arnd Bergmann
|
6b76ca2ab9 |
lib: devmem_is_allowed: include linux/io.h
The devmem_is_allowed() function is defined in a file of the same name, but the declaration is in asm/io.h, which is not included there, causing a W=1 warning: lib/devmem_is_allowed.c:20:5: error: no previous prototype for 'devmem_is_allowed' [-Werror=missing-prototypes] Include the appropriate header to avoid the warning. Link: https://lkml.kernel.org/r/20230517131102.934196-6-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Eric Paris <eparis@redhat.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Helge Deller <deller@gmx.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Moore <paul@paul-moore.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Alexey Dobriyan
|
3db55767da |
add intptr_t
Add signed intptr_t given that a) it is standard type and b) uintptr_t is in tree. Link: https://lkml.kernel.org/r/ed66b9e4-1fb7-45be-9bb9-d4bc291c691f@p183 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peng Zhang
|
7a03ae3920 |
maple_tree: simplify and clean up mas_wr_node_store()
Simplify and clean up mas_wr_node_store(), remove unnecessary code. Link: https://lkml.kernel.org/r/20230524031247.65949-10-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peng Zhang
|
e6d1ffd611 |
maple_tree: rework mas_wr_slot_store() to be cleaner and more efficient.
Get whether the two gaps to be overwritten are empty to avoid calling mas_update_gap() all the time. Also clean up the code and add comments. Link: https://lkml.kernel.org/r/20230524031247.65949-9-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peng Zhang
|
2e1da329b4 |
maple_tree: add comments and some minor cleanups to mas_wr_append()
Add comment for mas_wr_append(), move mas_update_gap() into mas_wr_append(), and other cleanups to make mas_wr_modify() cleaner. Link: https://lkml.kernel.org/r/20230524031247.65949-8-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peng Zhang
|
c6fc9e4a5c |
maple_tree: add mas_wr_new_end() to calculate new_end accurately
The previous new_end calculation is inaccurate, because it assumes that two new pivots must be added (this is inaccurate), and sometimes it will miss the fast path and enter the slow path. Add mas_wr_new_end() to accurately calculate new_end to make the conditions for entering the fast path more accurate. Link: https://lkml.kernel.org/r/20230524031247.65949-7-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peng Zhang
|
8c995a6314 |
maple_tree: make the code symmetrical in mas_wr_extend_null()
Just make the code symmetrical to improve readability. Link: https://lkml.kernel.org/r/20230524031247.65949-6-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peng Zhang
|
bc147f0f70 |
maple_tree: simplify mas_is_span_wr()
Make the code for detecting spanning writes more concise. Link: https://lkml.kernel.org/r/20230524031247.65949-5-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peng Zhang
|
14c4b5ab6a |
maple_tree: fix the arguments to __must_hold()
Fix the arguments to __must_hold() to make sparse work. Link: https://lkml.kernel.org/r/20230524031247.65949-4-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peng Zhang
|
c2aa6f5328 |
maple_tree: drop mas_{rev_}alloc() and mas_fill_gap()
mas_{rev_}alloc() and mas_fill_gap() are no longer used, delete them.
Link: https://lkml.kernel.org/r/20230524031247.65949-3-zhangpeng.00@bytedance.com
Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Peng Zhang
|
523716770e |
maple_tree: rework mtree_alloc_{range,rrange}()
Patch series "Clean ups for maple tree", v4.
Some clean ups, mainly to make the code of maple tree more concise.
This patchset has passed the self-test.
This patch (of 10):
Use mas_empty_area{_rev}() to refactor mtree_alloc_{range,rrange}()
Link: https://lkml.kernel.org/r/20230524031247.65949-2-zhangpeng.00@bytedance.com
Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Liam R. Howlett
|
eb2e817f38 |
maple_tree: update testing code for mas_{next,prev,walk}
Now that the functions have changed the limits, update the testing of the maple tree to test these new settings. Link: https://lkml.kernel.org/r/20230518145544.1722059-34-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Liam R. Howlett
|
6b23a29061 |
maple_tree: clear up index and last setting in single entry tree
When there is a single entry tree (range of 0-0 pointing to an entry), then ensure the limit is either 0-0 or 1-oo, depending on where the user walks. Ensure the correct node setting as well; either MAS_ROOT or MAS_NONE. Link: https://lkml.kernel.org/r/20230518145544.1722059-33-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Liam R. Howlett
|
6b9e93e010 |
maple_tree: add mas_prev_range() and mas_find_range_rev interface
Some users of the maple tree may want to move to the previous range regardless of the value stored there. Add this interface as well as the 'find' variant to support walking to the first value, then iterating over the previous ranges. Link: https://lkml.kernel.org/r/20230518145544.1722059-32-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Liam R. Howlett
|
dd9a851382 |
maple_tree: introduce mas_prev_slot() interface
Sometimes the user needs to revert to the previous slot, regardless of if it is empty or not. Add an interface to go to the previous slot. Since there can't be two consecutive NULLs in the tree, the mas_prev() function can be implemented by calling mas_prev_slot() a maximum of 2 times. Change the underlying interface to use mas_prev_slot() to align the code. Link: https://lkml.kernel.org/r/20230518145544.1722059-31-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Liam R. Howlett
|
de6e386c06 |
maple_tree: relocate mas_rewalk() and mas_rewalk_if_dead()
These functions need to move for future use. Link: https://lkml.kernel.org/r/20230518145544.1722059-30-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
|
6169b55319 |
maple_tree: add mas_next_range() and mas_find_range() interfaces
Some users of the maple tree may want to move to the next range in the tree, even if it stores a NULL. This family of function provides that functionality by advancing one slot at a time and returning the result, while mas_contiguous() will iterate over the range and stop on encountering the first NULL. Link: https://lkml.kernel.org/r/20230518145544.1722059-29-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
|
fff4a58cc0 |
maple_tree: introduce mas_next_slot() interface
Sometimes, during a tree walk, the user needs the next slot regardless of if it is empty or not. Add an interface to get the next slot. Since there are no consecutive NULLs allowed in the tree, the mas_next() function can only advance two slots at most. So use the new mas_next_slot() interface to align both implementations. Use this method for mas_find() as well. Link: https://lkml.kernel.org/r/20230518145544.1722059-28-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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17e7436bd3 |
maple_tree: fix testing mas_empty_area()
Empty area will return -EINVAL if the search window is smaller than the requested size. Fix the test case to check for this error code. Link: https://lkml.kernel.org/r/20230518145544.1722059-27-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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ba9972121a |
maple_tree: revise limit checks in mas_empty_area{_rev}()
Since the maple tree is inclusive in range, ensure that a range of 1 (min = max) works for searching for a gap in either direction, and make sure the size is at least 1 but not larger than the delta between min and max. This commit also updates the testing. Unfortunately there isn't a way to safely update the tests and code without a test failure. Link: https://lkml.kernel.org/r/20230518145544.1722059-26-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Suggested-by: Peng Zhang <zhangpeng.00@bytedance.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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39193685d5 |
maple_tree: try harder to keep active node with mas_prev()
Keep a reference to the node when possible with mas_prev(). This will avoid re-walking the tree. In keeping a reference to the node, keep the last/index accurate to the range being referenced. This means the limit may be within the range, but the range may extend outside of the limit. Also fix the single entry tree to respect the range (of 0), or set the node to MAS_NONE in the case of shifting beyond 0. Link: https://lkml.kernel.org/r/20230518145544.1722059-25-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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ca80f61004 |
maple_tree: try harder to keep active node after mas_next()
Clean up the mas_next() call to try and keep a node reference when possible. This will avoid re-walking the tree in most cases. Also clean up the single entry tree handling to ensure index/last are consistent with what one would expect. (returning NULL with limit of 1-oo). Link: https://lkml.kernel.org/r/20230518145544.1722059-24-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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d04118605f |
maple_tree: mas_start() reset depth on dead node
When a dead node is detected, the depth has already been set to 1 so reset it to 0. Link: https://lkml.kernel.org/r/20230518145544.1722059-22-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Reviewed-by: Peng Zhang <zhangpeng.00@bytedance.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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23e734ecd9 |
maple_tree: remove unnecessary check from mas_destroy()
mas_destroy currently checks if mas->node is MAS_START prior to calling mas_start(), but this is unnecessary as mas_start() will do nothing if the node is anything but MAS_START. Link: https://lkml.kernel.org/r/20230518145544.1722059-21-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Reviewed-by: Peng Zhang <zhangpeng.00@bytedance.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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eaf9790d3b |
maple_tree: add __init and __exit to test module
The test functions are not needed after the module is removed, so mark them as such. Add __exit to the module removal function. Some other variables have been marked as const static as well. Link: https://lkml.kernel.org/r/20230518145544.1722059-20-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Suggested-by: Andrew Morton <akpm@linux-foundation.org> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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a5199577b1 |
maple_tree: make test code work without debug enabled
The test code is less useful without debug, but can still do general validations. Define mt_dump(), mas_dump() and mas_wr_dump() as a noop if debug is not enabled and document it in the test module information that more information can be obtained with another kernel config option. MT_BUG_ON() will report a failures without tree dumps, and the output will be less useful. Link: https://lkml.kernel.org/r/20230518145544.1722059-17-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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acd4de60dd |
maple_tree: return error on mte_pivots() out of range
Rename mte_pivots() to mas_pivots() and pass through the ma_state to set the error code to -EIO when the offset is out of range for the node type. Change the WARN_ON() to MAS_WARN_ON() to log the maple state. Link: https://lkml.kernel.org/r/20230518145544.1722059-16-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Reviewed-by: Peng Zhang <zhangpeng.00@bytedance.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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bec1b51efb |
maple_tree: use MAS_BUG_ON() prior to calling mas_meta_gap()
Replace the call to BUG_ON() in mas_meta_gap() with calls before the function call MAS_BUG_ON() to get more information on error condition. Link: https://lkml.kernel.org/r/20230518145544.1722059-15-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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1c414c6a4b |
maple_tree: use MAS_WR_BUG_ON() in mas_store_prealloc()
mas_store_prealloc() should never fail, but if it does due to internal tree issues then get as much debug information as possible prior to crashing the kernel. Link: https://lkml.kernel.org/r/20230518145544.1722059-14-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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4bbd1748c1 |
maple_tree: use MAS_BUG_ON() from mas_topiary_range()
In the even of trying to remove data from a leaf node by use of mas_topiary_range(), log the maple state. Link: https://lkml.kernel.org/r/20230518145544.1722059-13-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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5950ada963 |
maple_tree: use MAS_BUG_ON() in mas_set_height()
Use MAS_BUG_ON() instead of MT_BUG_ON() to get the maple state information. In the unlikely event of a tree height of > 31, try to increase the probability of useful information being logged. Link: https://lkml.kernel.org/r/20230518145544.1722059-12-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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bf96715eb4 |
maple_tree: use MAS_BUG_ON() when setting a leaf node as a parent
Use MAS_BUG_ON() to dump the maple state and tree in the unlikely event of an issue. Link: https://lkml.kernel.org/r/20230518145544.1722059-11-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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e6d6792a5c |
maple_tree: convert debug code to use MT_WARN_ON() and MAS_WARN_ON()
Using MT_WARN_ON() allows for the removal of if statements before logging. Using MAS_WARN_ON() will provide more information when issues are encountered. Link: https://lkml.kernel.org/r/20230518145544.1722059-10-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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0d7c52bb29 |
maple_tree: convert BUG_ON() to MT_BUG_ON()
Use MT_BUG_ON() to get more information when running with MAPLE_TREE_DEBUG enabled. Link: https://lkml.kernel.org/r/20230518145544.1722059-8-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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f0a1f866ab |
maple_tree: add debug BUG_ON and WARN_ON variants
Add debug macros to dump the maple state and/or the tree for both warning and bug_on calls. Link: https://lkml.kernel.org/r/20230518145544.1722059-7-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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89f499f35c |
maple_tree: add format option to mt_dump()
Allow different formatting strings to be used when dumping the tree. Currently supports hex and decimal. Link: https://lkml.kernel.org/r/20230518145544.1722059-6-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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c3eb787e88 |
maple_tree: clean up mas_dfs_postorder()
Convert loop type to ensure all variables are set to make the compiler happy, and use the mas_is_none() function instead of explicitly checking the node in the maple state. Link: https://lkml.kernel.org/r/20230518145544.1722059-5-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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633769c926 |
maple_tree: avoid unnecessary ascending
The maple tree node limits are implied by the parent. When walking up the tree, the limit may not be known until a slot that does not have implied limits are encountered. However, if the node is the left-most or right-most node, the walking up to find that limit can be skipped. This commit also fixes the debug/testing code that was not setting the limit on walking down the tree as that optimization is not compatible with this change. Link: https://lkml.kernel.org/r/20230518145544.1722059-4-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Reviewed-by: Peng Zhang <zhangpeng.00@bytedance.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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afc754c651 |
maple_tree: clean up mas_parent_enum() and rename to mas_parent_type()
mas_parent_enum() is a simple wrapper for mte_parent_enum() which is only called from that wrapper. Remove the wrapper and inline mte_parent_enum() into mas_parent_enum(). At the same time, clean up the bit masking of the root pointer since it cannot be set by the time the bit masking occurs. Change the check on the root bit to a WARN_ON(), and fix the verification code to not trigger the WARN_ON() before checking if the node is root. Align the name to mas_parent_type() since mas_node_type() exists already. Link: https://lkml.kernel.org/r/20230518145544.1722059-3-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Reported-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Wei Yang <richard.weiyang@gmail.com> Cc: David Binderman <dcb314@hotmail.com> Cc: Peng Zhang <zhangpeng.00@bytedance.com> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Vernon Yang <vernon2gm@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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5729e06c81 |
maple_tree: fix static analyser cppcheck issue
Patch series "Maple tree mas_{next,prev}_range() and cleanup", v4.
This patchset contains a number of clean ups to the code to make it more
usable (next/prev range), the addition of debug output formatting, the
addition of printing the maple state information in the WARN_ON/BUG_ON
code.
There is also work done here to keep nodes active during iterations to
reduce the necessity of re-walking the tree.
Finally, there is a new interface added to move to the next or previous
range in the tree, even if it is empty.
The organisation of the patches is as follows:
0001-0004 - Small clean ups
0005-0018 - Additional debug options and WARN_ON/BUG_ON changes
0019 - Test module __init and __exit addition
0020-0021 - More functional clean ups
0022-0026 - Changes to keep nodes active
0027-0034 - Add new mas_{prev,next}_range()
0035 - Use new mas_{prev,next}_range() in mmap_region()
This patch (of 35):
Static analyser of the maple tree code noticed that the split variable is
being used to dereference into an array prior to checking the variable
itself. Fix this issue by changing the order of the statement to check
the variable first.
Link: https://lkml.kernel.org/r/20230518145544.1722059-1-Liam.Howlett@oracle.com
Link: https://lkml.kernel.org/r/20230518145544.1722059-2-Liam.Howlett@oracle.com
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reported-by: David Binderman <dcb314@hotmail.com>
Reviewed-by: Peng Zhang<zhangpeng.00@bytedance.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Vernon Yang <vernon2gm@gmail.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Kefeng Wang
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e9aae17092 |
mm: page_alloc: collect mem statistic into show_mem.c
Let's move show_mem.c from lib to mm, as it belongs memory subsystem, also split some memory statistic related functions from page_alloc.c to show_mem.c, and we cleanup some unneeded include. There is no functional change. Link: https://lkml.kernel.org/r/20230516063821.121844-5-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: David Hildenbrand <david@redhat.com> Cc: "Huang, Ying" <ying.huang@intel.com> Cc: Iurii Zaikin <yzaikin@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Len Brown <len.brown@intel.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: Pavel Machek <pavel@ucw.cz> Cc: Rafael J. Wysocki <rafael@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peng Zhang
|
cd00dd2585 |
maple_tree: fix potential out-of-bounds access in mas_wr_end_piv()
Check the write offset end bounds before using it as the offset into the
pivot array. This avoids a possible out-of-bounds access on the pivot
array if the write extends to the last slot in the node, in which case the
node maximum should be used as the end pivot.
akpm: this doesn't affect any current callers, but new users of mapletree
may encounter this problem if backported into earlier kernels, so let's
fix it in -stable kernels in case of this.
Link: https://lkml.kernel.org/r/20230506024752.2550-1-zhangpeng.00@bytedance.com
Fixes:
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Jakub Kicinski
|
449f6bc17a |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR. Conflicts: net/sched/sch_taprio.c |
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Linus Torvalds
|
25041a4c02 |
Networking fixes for 6.4-rc6, including fixes from can, wifi, netfilter,
bluetooth and ebpf.
Current release - regressions:
- bpf: sockmap: avoid potential NULL dereference in sk_psock_verdict_data_ready()
- wifi: iwlwifi: fix -Warray-bounds bug in iwl_mvm_wait_d3_notif()
- phylink: actually fix ksettings_set() ethtool call
- eth: dwmac-qcom-ethqos: fix a regression on EMAC < 3
Current release - new code bugs:
- wifi: mt76: fix possible NULL pointer dereference in mt7996_mac_write_txwi()
Previous releases - regressions:
- netfilter: fix NULL pointer dereference in nf_confirm_cthelper
- wifi: rtw88/rtw89: correct PS calculation for SUPPORTS_DYNAMIC_PS
- openvswitch: fix upcall counter access before allocation
- bluetooth:
- fix use-after-free in hci_remove_ltk/hci_remove_irk
- fix l2cap_disconnect_req deadlock
- nic: bnxt_en: prevent kernel panic when receiving unexpected PHC_UPDATE event
Previous releases - always broken:
- core: annotate rfs lockless accesses
- sched: fq_pie: ensure reasonable TCA_FQ_PIE_QUANTUM values
- netfilter: add null check for nla_nest_start_noflag() in nft_dump_basechain_hook()
- bpf: fix UAF in task local storage
- ipv4: ping_group_range: allow GID from 2147483648 to 4294967294
- ipv6: rpl: fix route of death.
- tcp: gso: really support BIG TCP
- mptcp: fixes for user-space PM address advertisement
- smc: avoid to access invalid RMBs' MRs in SMCRv1 ADD LINK CONT
- can: avoid possible use-after-free when j1939_can_rx_register fails
- batman-adv: fix UaF while rescheduling delayed work
- eth: qede: fix scheduling while atomic
- eth: ice: make writes to /dev/gnssX synchronous
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from can, wifi, netfilter, bluetooth and ebpf.
Current release - regressions:
- bpf: sockmap: avoid potential NULL dereference in
sk_psock_verdict_data_ready()
- wifi: iwlwifi: fix -Warray-bounds bug in iwl_mvm_wait_d3_notif()
- phylink: actually fix ksettings_set() ethtool call
- eth: dwmac-qcom-ethqos: fix a regression on EMAC < 3
Current release - new code bugs:
- wifi: mt76: fix possible NULL pointer dereference in
mt7996_mac_write_txwi()
Previous releases - regressions:
- netfilter: fix NULL pointer dereference in nf_confirm_cthelper
- wifi: rtw88/rtw89: correct PS calculation for SUPPORTS_DYNAMIC_PS
- openvswitch: fix upcall counter access before allocation
- bluetooth:
- fix use-after-free in hci_remove_ltk/hci_remove_irk
- fix l2cap_disconnect_req deadlock
- nic: bnxt_en: prevent kernel panic when receiving unexpected
PHC_UPDATE event
Previous releases - always broken:
- core: annotate rfs lockless accesses
- sched: fq_pie: ensure reasonable TCA_FQ_PIE_QUANTUM values
- netfilter: add null check for nla_nest_start_noflag() in
nft_dump_basechain_hook()
- bpf: fix UAF in task local storage
- ipv4: ping_group_range: allow GID from 2147483648 to 4294967294
- ipv6: rpl: fix route of death.
- tcp: gso: really support BIG TCP
- mptcp: fixes for user-space PM address advertisement
- smc: avoid to access invalid RMBs' MRs in SMCRv1 ADD LINK CONT
- can: avoid possible use-after-free when j1939_can_rx_register fails
- batman-adv: fix UaF while rescheduling delayed work
- eth: qede: fix scheduling while atomic
- eth: ice: make writes to /dev/gnssX synchronous"
* tag 'net-6.4-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (83 commits)
bnxt_en: Implement .set_port / .unset_port UDP tunnel callbacks
bnxt_en: Prevent kernel panic when receiving unexpected PHC_UPDATE event
bnxt_en: Skip firmware fatal error recovery if chip is not accessible
bnxt_en: Query default VLAN before VNIC setup on a VF
bnxt_en: Don't issue AP reset during ethtool's reset operation
bnxt_en: Fix bnxt_hwrm_update_rss_hash_cfg()
net: bcmgenet: Fix EEE implementation
eth: ixgbe: fix the wake condition
eth: bnxt: fix the wake condition
lib: cpu_rmap: Fix potential use-after-free in irq_cpu_rmap_release()
bpf: Add extra path pointer check to d_path helper
net: sched: fix possible refcount leak in tc_chain_tmplt_add()
net: sched: act_police: fix sparse errors in tcf_police_dump()
net: openvswitch: fix upcall counter access before allocation
net: sched: move rtm_tca_policy declaration to include file
ice: make writes to /dev/gnssX synchronous
net: sched: add rcu annotations around qdisc->qdisc_sleeping
rfs: annotate lockless accesses to RFS sock flow table
rfs: annotate lockless accesses to sk->sk_rxhash
virtio_net: use control_buf for coalesce params
...
|
||
|
David Howells
|
f5f82cd187 |
Move netfs_extract_iter_to_sg() to lib/scatterlist.c
Move netfs_extract_iter_to_sg() to lib/scatterlist.c as it's going to be used by more than just network filesystems (AF_ALG, for example). Signed-off-by: David Howells <dhowells@redhat.com> cc: Jeff Layton <jlayton@kernel.org> cc: Steve French <sfrench@samba.org> cc: Shyam Prasad N <nspmangalore@gmail.com> cc: Rohith Surabattula <rohiths.msft@gmail.com> cc: Jens Axboe <axboe@kernel.dk> cc: Herbert Xu <herbert@gondor.apana.org.au> cc: "David S. Miller" <davem@davemloft.net> cc: Eric Dumazet <edumazet@google.com> cc: Jakub Kicinski <kuba@kernel.org> cc: Paolo Abeni <pabeni@redhat.com> cc: Matthew Wilcox <willy@infradead.org> cc: linux-crypto@vger.kernel.org cc: linux-cachefs@redhat.com cc: linux-cifs@vger.kernel.org cc: linux-fsdevel@vger.kernel.org cc: netdev@vger.kernel.org Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
|
Ben Hutchings
|
7c5d4801ec |
lib: cpu_rmap: Fix potential use-after-free in irq_cpu_rmap_release()
irq_cpu_rmap_release() calls cpu_rmap_put(), which may free the rmap.
So we need to clear the pointer to our glue structure in rmap before
doing that, not after.
Fixes:
|
||
|
Tetsuo Handa
|
8b64d420fe |
debugobjects: Recheck debug_objects_enabled before reporting
syzbot is reporting false a positive ODEBUG message immediately after
ODEBUG was disabled due to OOM.
[ 1062.309646][T22911] ODEBUG: Out of memory. ODEBUG disabled
[ 1062.886755][ T5171] ------------[ cut here ]------------
[ 1062.892770][ T5171] ODEBUG: assert_init not available (active state 0) object: ffffc900056afb20 object type: timer_list hint: process_timeout+0x0/0x40
CPU 0 [ T5171] CPU 1 [T22911]
-------------- --------------
debug_object_assert_init() {
if (!debug_objects_enabled)
return;
db = get_bucket(addr);
lookup_object_or_alloc() {
debug_objects_enabled = 0;
return NULL;
}
debug_objects_oom() {
pr_warn("Out of memory. ODEBUG disabled\n");
// all buckets get emptied here, and
}
lookup_object_or_alloc(addr, db, descr, false, true) {
// this bucket is already empty.
return ERR_PTR(-ENOENT);
}
// Emits false positive warning.
debug_print_object(&o, "assert_init");
}
Recheck debug_object_enabled in debug_print_object() to avoid that.
Reported-by: syzbot <syzbot+7937ba6a50bdd00fffdf@syzkaller.appspotmail.com>
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/492fe2ae-5141-d548-ebd5-62f5fe2e57f7@I-love.SAKURA.ne.jp
Closes: https://syzkaller.appspot.com/bug?extid=7937ba6a50bdd00fffdf
|
||
|
Masami Hiramatsu (Google)
|
cb16330d12 |
fprobe: Pass return address to the handlers
Pass return address as 'ret_ip' to the fprobe entry and return handlers so that the fprobe user handler can get the reutrn address without analyzing arch-dependent pt_regs. Link: https://lore.kernel.org/all/168507467664.913472.11642316698862778600.stgit@mhiramat.roam.corp.google.com/ Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> |
||
|
Andy Shevchenko
|
8d2b2281ae |
mac_pton: Clean up the header inclusions
Since hex_to_bin() is provided by hex.h there is no need to require kernel.h. Replace the latter by the former and add missing export.h. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230604132858.6650-1-andriy.shevchenko@linux.intel.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
|
Andy Shevchenko
|
b2f10148ec |
kobject: Use return value of strreplace()
Since strreplace() returns the pointer to the string itself, we may use it directly in the code. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230605170553.7835-4-andriy.shevchenko@linux.intel.com |
||
|
Andy Shevchenko
|
d01a77afd6 |
lib/string_helpers: Change returned value of the strreplace()
It's more useful to return the pointer to the string itself with strreplace(), so it may be used like attr->name = strreplace(name, '/', '_'); While at it, amend the kernel documentation. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230605170553.7835-3-andriy.shevchenko@linux.intel.com |
||
|
Andrzej Hajda
|
acd8f0e5d7 |
lib/ref_tracker: remove warnings in case of allocation failure
Library can handle allocation failures. To avoid allocation warnings __GFP_NOWARN has been added everywhere. Moreover GFP_ATOMIC has been replaced with GFP_NOWAIT in case of stack allocation on tracker free call. Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com> Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Andrzej Hajda
|
227c6c8323 |
lib/ref_tracker: add printing to memory buffer
Similar to stack_(depot|trace)_snprint the patch adds helper to printing stats to memory buffer. It will be helpful in case of debugfs. Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com> Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Andrzej Hajda
|
b6d7c0eb2d |
lib/ref_tracker: improve printing stats
In case the library is tracking busy subsystem, simply printing stack for every active reference will spam log with long, hard to read, redundant stack traces. To improve readabilty following changes have been made: - reports are printed per stack_handle - log is more compact, - added display name for ref_tracker_dir - it will differentiate multiple subsystems, - stack trace is printed indented, in the same printk call, - info about dropped references is printed as well. Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com> Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Andrzej Hajda
|
7a113ff635 |
lib/ref_tracker: add unlocked leak print helper
To have reliable detection of leaks, caller must be able to check under the same lock both: tracked counter and the leaks. dir.lock is natural candidate for such lock and unlocked print helper can be called with this lock taken. As a bonus we can reuse this helper in ref_tracker_dir_exit. Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com> Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Peter Zijlstra
|
224d80c584 |
types: Introduce [us]128
Introduce [us]128 (when available). Unlike [us]64, ensure they are always naturally aligned. This also enables 128bit wide atomics (which require natural alignment) such as cmpxchg128(). Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Tested-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20230531132323.385005581@infradead.org |
||
|
David Gow
|
260755184c |
kunit: Move kunit_abort() call out of kunit_do_failed_assertion()
KUnit aborts the current thread when an assertion fails. Currently, this is done conditionally as part of the kunit_do_failed_assertion() function, but this hides the kunit_abort() call from the compiler (particularly if it's in another module). This, in turn, can lead to both suboptimal code generation (the compiler can't know if kunit_do_failed_assertion() will return), and to static analysis tools like smatch giving false positives. Moving the kunit_abort() call into the macro should give the compiler and tools a better chance at understanding what's going on. Doing so requires exporting kunit_abort(), though it's recommended to continue to use assertions in lieu of aborting directly. In addition, kunit_abort() and kunit_do_failed_assertion() are renamed to make it clear they they're intended for internal KUnit use, to: __kunit_do_failed_assertion() and __kunit_abort() Suggested-by: Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by: David Gow <davidgow@google.com> Reviewed-by: Miguel Ojeda <ojeda@kernel.org> Reviewed-by: Daniel Latypov <dlatypov@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Alexander Potapenko
|
f9cfb1910e |
string: use __builtin_memcpy() in strlcpy/strlcat
lib/string.c is built with -ffreestanding, which prevents the compiler from replacing certain functions with calls to their library versions. On the other hand, this also prevents Clang and GCC from instrumenting calls to memcpy() when building with KASAN, KCSAN or KMSAN: - KASAN normally replaces memcpy() with __asan_memcpy() with the additional cc-param,asan-kernel-mem-intrinsic-prefix=1; - KCSAN and KMSAN replace memcpy() with __tsan_memcpy() and __msan_memcpy() by default. To let the tools catch memory accesses from strlcpy/strlcat, replace the calls to memcpy() with __builtin_memcpy(), which KASAN, KCSAN and KMSAN are able to replace even in -ffreestanding mode. This preserves the behavior in normal builds (__builtin_memcpy() ends up being replaced with memcpy()), and does not introduce new instrumentation in unwanted places, as strlcpy/strlcat are already instrumented. Suggested-by: Marco Elver <elver@google.com> Signed-off-by: Alexander Potapenko <glider@google.com> Reviewed-by: Marco Elver <elver@google.com> Link: https://lore.kernel.org/all/20230224085942.1791837-1-elver@google.com/ Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230530083911.1104336-1-glider@google.com |
||
|
Mirsad Goran Todorovac
|
48e1560230 |
test_firmware: fix the memory leak of the allocated firmware buffer
The following kernel memory leak was noticed after running
tools/testing/selftests/firmware/fw_run_tests.sh:
[root@pc-mtodorov firmware]# cat /sys/kernel/debug/kmemleak
.
.
.
unreferenced object 0xffff955389bc3400 (size 1024):
comm "test_firmware-0", pid 5451, jiffies 4294944822 (age 65.652s)
hex dump (first 32 bytes):
47 48 34 35 36 37 0a 00 00 00 00 00 00 00 00 00 GH4567..........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff962f5dec>] slab_post_alloc_hook+0x8c/0x3c0
[<ffffffff962fcca4>] __kmem_cache_alloc_node+0x184/0x240
[<ffffffff962704de>] kmalloc_trace+0x2e/0xc0
[<ffffffff9665b42d>] test_fw_run_batch_request+0x9d/0x180
[<ffffffff95fd813b>] kthread+0x10b/0x140
[<ffffffff95e033e9>] ret_from_fork+0x29/0x50
unreferenced object 0xffff9553c334b400 (size 1024):
comm "test_firmware-1", pid 5452, jiffies 4294944822 (age 65.652s)
hex dump (first 32 bytes):
47 48 34 35 36 37 0a 00 00 00 00 00 00 00 00 00 GH4567..........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff962f5dec>] slab_post_alloc_hook+0x8c/0x3c0
[<ffffffff962fcca4>] __kmem_cache_alloc_node+0x184/0x240
[<ffffffff962704de>] kmalloc_trace+0x2e/0xc0
[<ffffffff9665b42d>] test_fw_run_batch_request+0x9d/0x180
[<ffffffff95fd813b>] kthread+0x10b/0x140
[<ffffffff95e033e9>] ret_from_fork+0x29/0x50
unreferenced object 0xffff9553c334f000 (size 1024):
comm "test_firmware-2", pid 5453, jiffies 4294944822 (age 65.652s)
hex dump (first 32 bytes):
47 48 34 35 36 37 0a 00 00 00 00 00 00 00 00 00 GH4567..........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff962f5dec>] slab_post_alloc_hook+0x8c/0x3c0
[<ffffffff962fcca4>] __kmem_cache_alloc_node+0x184/0x240
[<ffffffff962704de>] kmalloc_trace+0x2e/0xc0
[<ffffffff9665b42d>] test_fw_run_batch_request+0x9d/0x180
[<ffffffff95fd813b>] kthread+0x10b/0x140
[<ffffffff95e033e9>] ret_from_fork+0x29/0x50
unreferenced object 0xffff9553c3348400 (size 1024):
comm "test_firmware-3", pid 5454, jiffies 4294944822 (age 65.652s)
hex dump (first 32 bytes):
47 48 34 35 36 37 0a 00 00 00 00 00 00 00 00 00 GH4567..........
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff962f5dec>] slab_post_alloc_hook+0x8c/0x3c0
[<ffffffff962fcca4>] __kmem_cache_alloc_node+0x184/0x240
[<ffffffff962704de>] kmalloc_trace+0x2e/0xc0
[<ffffffff9665b42d>] test_fw_run_batch_request+0x9d/0x180
[<ffffffff95fd813b>] kthread+0x10b/0x140
[<ffffffff95e033e9>] ret_from_fork+0x29/0x50
[root@pc-mtodorov firmware]#
Note that the size 1024 corresponds to the size of the test firmware
buffer. The actual number of the buffers leaked is around 70-110,
depending on the test run.
The cause of the leak is the following:
request_partial_firmware_into_buf() and request_firmware_into_buf()
provided firmware buffer isn't released on release_firmware(), we
have allocated it and we are responsible for deallocating it manually.
This is introduced in a number of context where previously only
release_firmware() was called, which was insufficient.
Reported-by: Mirsad Goran Todorovac <mirsad.todorovac@alu.unizg.hr>
Fixes:
|
||
|
Mirsad Goran Todorovac
|
be37bed754 |
test_firmware: fix a memory leak with reqs buffer
Dan Carpenter spotted that test_fw_config->reqs will be leaked if
trigger_batched_requests_store() is called two or more times.
The same appears with trigger_batched_requests_async_store().
This bug wasn't trigger by the tests, but observed by Dan's visual
inspection of the code.
The recommended workaround was to return -EBUSY if test_fw_config->reqs
is already allocated.
Fixes:
|
||
|
Mirsad Goran Todorovac
|
4acfe3dfde |
test_firmware: prevent race conditions by a correct implementation of locking
Dan Carpenter spotted a race condition in a couple of situations like
these in the test_firmware driver:
static int test_dev_config_update_u8(const char *buf, size_t size, u8 *cfg)
{
u8 val;
int ret;
ret = kstrtou8(buf, 10, &val);
if (ret)
return ret;
mutex_lock(&test_fw_mutex);
*(u8 *)cfg = val;
mutex_unlock(&test_fw_mutex);
/* Always return full write size even if we didn't consume all */
return size;
}
static ssize_t config_num_requests_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
int rc;
mutex_lock(&test_fw_mutex);
if (test_fw_config->reqs) {
pr_err("Must call release_all_firmware prior to changing config\n");
rc = -EINVAL;
mutex_unlock(&test_fw_mutex);
goto out;
}
mutex_unlock(&test_fw_mutex);
rc = test_dev_config_update_u8(buf, count,
&test_fw_config->num_requests);
out:
return rc;
}
static ssize_t config_read_fw_idx_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
return test_dev_config_update_u8(buf, count,
&test_fw_config->read_fw_idx);
}
The function test_dev_config_update_u8() is called from both the locked
and the unlocked context, function config_num_requests_store() and
config_read_fw_idx_store() which can both be called asynchronously as
they are driver's methods, while test_dev_config_update_u8() and siblings
change their argument pointed to by u8 *cfg or similar pointer.
To avoid deadlock on test_fw_mutex, the lock is dropped before calling
test_dev_config_update_u8() and re-acquired within test_dev_config_update_u8()
itself, but alas this creates a race condition.
Having two locks wouldn't assure a race-proof mutual exclusion.
This situation is best avoided by the introduction of a new, unlocked
function __test_dev_config_update_u8() which can be called from the locked
context and reducing test_dev_config_update_u8() to:
static int test_dev_config_update_u8(const char *buf, size_t size, u8 *cfg)
{
int ret;
mutex_lock(&test_fw_mutex);
ret = __test_dev_config_update_u8(buf, size, cfg);
mutex_unlock(&test_fw_mutex);
return ret;
}
doing the locking and calling the unlocked primitive, which enables both
locked and unlocked versions without duplication of code.
The similar approach was applied to all functions called from the locked
and the unlocked context, which safely mitigates both deadlocks and race
conditions in the driver.
__test_dev_config_update_bool(), __test_dev_config_update_u8() and
__test_dev_config_update_size_t() unlocked versions of the functions
were introduced to be called from the locked contexts as a workaround
without releasing the main driver's lock and thereof causing a race
condition.
The test_dev_config_update_bool(), test_dev_config_update_u8() and
test_dev_config_update_size_t() locked versions of the functions
are being called from driver methods without the unnecessary multiplying
of the locking and unlocking code for each method, and complicating
the code with saving of the return value across lock.
Fixes:
|
||
|
Su Hui
|
0d2da4b595 |
bpf/tests: Use struct_size()
Use struct_size() instead of hand writing it. This is less verbose and more informative. Signed-off-by: Su Hui <suhui@nfschina.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20230531043251.989312-1-suhui@nfschina.com |
||
|
Arnd Bergmann
|
26f15e5de1 |
ubsan: add prototypes for internal functions
Most of the functions in ubsan that are only called from generated code don't have a prototype, which W=1 builds warn about: lib/ubsan.c:226:6: error: no previous prototype for '__ubsan_handle_divrem_overflow' [-Werror=missing-prototypes] lib/ubsan.c:307:6: error: no previous prototype for '__ubsan_handle_type_mismatch' [-Werror=missing-prototypes] lib/ubsan.c:321:6: error: no previous prototype for '__ubsan_handle_type_mismatch_v1' [-Werror=missing-prototypes] lib/ubsan.c:335:6: error: no previous prototype for '__ubsan_handle_out_of_bounds' [-Werror=missing-prototypes] lib/ubsan.c:352:6: error: no previous prototype for '__ubsan_handle_shift_out_of_bounds' [-Werror=missing-prototypes] lib/ubsan.c:394:6: error: no previous prototype for '__ubsan_handle_builtin_unreachable' [-Werror=missing-prototypes] lib/ubsan.c:404:6: error: no previous prototype for '__ubsan_handle_load_invalid_value' [-Werror=missing-prototypes] Add prototypes for all of these to lib/ubsan.h, and remove the one that was already present in ubsan.c. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Fangrui Song <maskray@google.com> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230517125102.930491-1-arnd@kernel.org |
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|
Linus Torvalds
|
d8f14b84fe |
Two fixes for debugobjects:
- Prevent that the allocation path wakes up kswapd. That's a long
standing issue due to the GFP_ATOMIC allocation flag. As debug objects
can be invoked from pretty much any context waking kswapd can end up
in arbitrary lock chains versus the waitqueue lock.
- Correct the explicit lockdep wait-type violation in
debug_object_fill_pool().
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Merge tag 'core-debugobjects-2023-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull debugobjects fixes from Thomas Gleixner:
"Two fixes for debugobjects:
- Prevent the allocation path from waking up kswapd.
That's a long standing issue due to the GFP_ATOMIC allocation flag.
As debug objects can be invoked from pretty much any context waking
kswapd can end up in arbitrary lock chains versus the waitqueue
lock
- Correct the explicit lockdep wait-type violation in
debug_object_fill_pool()"
* tag 'core-debugobjects-2023-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
debugobjects: Don't wake up kswapd from fill_pool()
debugobjects,locking: Annotate debug_object_fill_pool() wait type violation
|
||
|
Kees Cook
|
d67790ddf0 |
overflow: Add struct_size_t() helper
While struct_size() is normally used in situations where the structure
type already has a pointer instance, there are places where no variable
is available. In the past, this has been worked around by using a typed
NULL first argument, but this is a bit ugly. Add a helper to do this,
and replace the handful of instances of the code pattern with it.
Instances were found with this Coccinelle script:
@struct_size_t@
identifier STRUCT, MEMBER;
expression COUNT;
@@
- struct_size((struct STRUCT *)\(0\|NULL\),
+ struct_size_t(struct STRUCT,
MEMBER, COUNT)
Suggested-by: Christoph Hellwig <hch@infradead.org>
Cc: Jesse Brandeburg <jesse.brandeburg@intel.com>
Cc: Tony Nguyen <anthony.l.nguyen@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: James Smart <james.smart@broadcom.com>
Cc: Keith Busch <kbusch@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: HighPoint Linux Team <linux@highpoint-tech.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Kashyap Desai <kashyap.desai@broadcom.com>
Cc: Sumit Saxena <sumit.saxena@broadcom.com>
Cc: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Cc: Don Brace <don.brace@microchip.com>
Cc: "Darrick J. Wong" <djwong@kernel.org>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: Guo Xuenan <guoxuenan@huawei.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Daniel Latypov <dlatypov@google.com>
Cc: kernel test robot <lkp@intel.com>
Cc: intel-wired-lan@lists.osuosl.org
Cc: netdev@vger.kernel.org
Cc: linux-nvme@lists.infradead.org
Cc: linux-scsi@vger.kernel.org
Cc: megaraidlinux.pdl@broadcom.com
Cc: storagedev@microchip.com
Cc: linux-xfs@vger.kernel.org
Cc: linux-hardening@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Link: https://lore.kernel.org/r/20230522211810.never.421-kees@kernel.org
|
||
|
Michal Wajdeczko
|
b1eaa8b2a5 |
kunit: Update kunit_print_ok_not_ok function
There is no need use opaque test_or_suite pointer and is_test flag as we don't use anything from the suite struct. Always expect test pointer and use NULL as indication that provided results are from the suite so we can treat them differently. Since results could be from nested tests, like parameterized tests, add explicit level parameter to properly indent output messages and thus allow to reuse this function from other places. While around, remove small code duplication near skip directive. Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: David Gow <davidgow@google.com> Cc: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Michal Wajdeczko
|
b08f75b9bb |
kunit: Fix reporting of the skipped parameterized tests
Logs from the parameterized tests that were skipped don't include SKIP directive thus they are displayed as PASSED. Fix that. Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: David Gow <davidgow@google.com> Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Michal Wajdeczko
|
d273b72846 |
kunit/test: Add example test showing parameterized testing
Use of parameterized testing is documented [1] but such use case is not present in demo kunit test. Add small subtest for that. [1] https://kernel.org/doc/html/latest/dev-tools/kunit/usage.html#parameterized-testing Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: David Gow <davidgow@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Noah Goldstein
|
688eb8191b |
x86/csum: Improve performance of csum_partial
1) Add special case for len == 40 as that is the hottest value. The
nets a ~8-9% latency improvement and a ~30% throughput improvement
in the len == 40 case.
2) Use multiple accumulators in the 64-byte loop. This dramatically
improves ILP and results in up to a 40% latency/throughput
improvement (better for more iterations).
Results from benchmarking on Icelake. Times measured with rdtsc()
len lat_new lat_old r tput_new tput_old r
8 3.58 3.47 1.032 3.58 3.51 1.021
16 4.14 4.02 1.028 3.96 3.78 1.046
24 4.99 5.03 0.992 4.23 4.03 1.050
32 5.09 5.08 1.001 4.68 4.47 1.048
40 5.57 6.08 0.916 3.05 4.43 0.690
48 6.65 6.63 1.003 4.97 4.69 1.059
56 7.74 7.72 1.003 5.22 4.95 1.055
64 6.65 7.22 0.921 6.38 6.42 0.994
96 9.43 9.96 0.946 7.46 7.54 0.990
128 9.39 12.15 0.773 8.90 8.79 1.012
200 12.65 18.08 0.699 11.63 11.60 1.002
272 15.82 23.37 0.677 14.43 14.35 1.005
440 24.12 36.43 0.662 21.57 22.69 0.951
952 46.20 74.01 0.624 42.98 53.12 0.809
1024 47.12 78.24 0.602 46.36 58.83 0.788
1552 72.01 117.30 0.614 71.92 96.78 0.743
2048 93.07 153.25 0.607 93.28 137.20 0.680
2600 114.73 194.30 0.590 114.28 179.32 0.637
3608 156.34 268.41 0.582 154.97 254.02 0.610
4096 175.01 304.03 0.576 175.89 292.08 0.602
There is no such thing as a free lunch, however, and the special case
for len == 40 does add overhead to the len != 40 cases. This seems to
amount to be ~5% throughput and slightly less in terms of latency.
Testing:
Part of this change is a new kunit test. The tests check all
alignment X length pairs in [0, 64) X [0, 512).
There are three cases.
1) Precomputed random inputs/seed. The expected results where
generated use the generic implementation (which is assumed to be
non-buggy).
2) An input of all 1s. The goal of this test is to catch any case
a carry is missing.
3) An input that never carries. The goal of this test si to catch
any case of incorrectly carrying.
More exhaustive tests that test all alignment X length pairs in
[0, 8192) X [0, 8192] on random data are also available here:
https://github.com/goldsteinn/csum-reproduction
The reposity also has the code for reproducing the above benchmark
numbers.
Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/all/20230511011002.935690-1-goldstein.w.n%40gmail.com
|
||
|
David Gow
|
57e3cded99 |
kunit: kmalloc_array: Use kunit_add_action()
The kunit_add_action() function is much simpler and cleaner to use that the full KUnit resource API for simple things like the kunit_kmalloc_array() functionality. Replacing it allows us to get rid of a number of helper functions, and leaves us with no uses of kunit_alloc_resource(), which has some usability problems and is going to have its behaviour modified in an upcoming patch. Note that we need to use kunit_defer_trigger_all() to implement kunit_kfree(). Reviewed-by: Benjamin Berg <benjamin.berg@intel.com> Reviewed-by: Maxime Ripard <maxime@cerno.tech> Tested-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
David Gow
|
00e63f8afc |
kunit: executor_test: Use kunit_add_action()
Now we have the kunit_add_action() function, we can use it to implement kfree_at_end() and free_subsuite_at_end() without the need for extra helper functions. Reviewed-by: Benjamin Berg <benjamin.berg@intel.com> Reviewed-by: Maxime Ripard <maxime@cerno.tech> Tested-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
David Gow
|
b9dce8a1ed |
kunit: Add kunit_add_action() to defer a call until test exit
Many uses of the KUnit resource system are intended to simply defer calling a function until the test exits (be it due to success or failure). The existing kunit_alloc_resource() function is often used for this, but was awkward to use (requiring passing NULL init functions, etc), and returned a resource without incrementing its reference count, which -- while okay for this use-case -- could cause problems in others. Instead, introduce a simple kunit_add_action() API: a simple function (returning nothing, accepting a single void* argument) can be scheduled to be called when the test exits. Deferred actions are called in the opposite order to that which they were registered. This mimics the devres API, devm_add_action(), and also provides kunit_remove_action(), to cancel a deferred action, and kunit_release_action() to trigger one early. This is implemented as a resource under the hood, so the ordering between resource cleanup and deferred functions is maintained. Reviewed-by: Benjamin Berg <benjamin.berg@intel.com> Reviewed-by: Maxime Ripard <maxime@cerno.tech> Tested-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
David Howells
|
3fc40265ae |
iov_iter: Kill ITER_PIPE
The ITER_PIPE-type iterator was only used by generic_file_splice_read() and that has been replaced and removed. This leaves ITER_PIPE unused - so remove it too. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christian Brauner <brauner@kernel.org> cc: Jens Axboe <axboe@kernel.dk> cc: Al Viro <viro@zeniv.linux.org.uk> cc: David Hildenbrand <david@redhat.com> cc: John Hubbard <jhubbard@nvidia.com> cc: linux-mm@kvack.org cc: linux-block@vger.kernel.org cc: linux-fsdevel@vger.kernel.org Link: https://lore.kernel.org/r/20230522135018.2742245-31-dhowells@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk> |
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|
Tetsuo Handa
|
eb799279fb |
debugobjects: Don't wake up kswapd from fill_pool()
syzbot is reporting a lockdep warning in fill_pool() because the allocation
from debugobjects is using GFP_ATOMIC, which is (__GFP_HIGH | __GFP_KSWAPD_RECLAIM)
and therefore tries to wake up kswapd, which acquires kswapd_wait::lock.
Since fill_pool() might be called with arbitrary locks held, fill_pool()
should not assume that acquiring kswapd_wait::lock is safe.
Use __GFP_HIGH instead and remove __GFP_NORETRY as it is pointless for
!__GFP_DIRECT_RECLAIM allocation.
Fixes:
|
||
|
Herbert Xu
|
6c19f3bfff |
crypto: lib/sha256 - Use generic code from sha256_base
Instead of duplicating the sha256 block processing code, reuse the common code from crypto/sha256_base.h. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Herbert Xu
|
70d391a863 |
crypto: lib/sha256 - Remove redundant and unused sha224_update
The function sha224_update is exactly the same as sha256_update. Moreover it's not even used in the kernel so it can be removed. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Linus Torvalds
|
f4a8871f9f |
Eight hotfixes. Four are cc:stable, the other four are for post-6.4
issues, or aren't considered suitable for backporting. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZGasdgAKCRDdBJ7gKXxA jpTFAQC2WlV6CbEsy46jJK2XzCypzLLxHiRmVCw5pmAucki4awEAjllEuzK6vw61 ytBZ/O2sMB5AbCf31c6UYxgLS32oyAo= =IDcO -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2023-05-18-15-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "Eight hotfixes. Four are cc:stable, the other four are for post-6.4 issues, or aren't considered suitable for backporting" * tag 'mm-hotfixes-stable-2023-05-18-15-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: MAINTAINERS: Cleanup Arm Display IP maintainers MAINTAINERS: repair pattern in DIALOG SEMICONDUCTOR DRIVERS nilfs2: fix use-after-free bug of nilfs_root in nilfs_evict_inode() mm: fix zswap writeback race condition mm: kfence: fix false positives on big endian zsmalloc: move LRU update from zs_map_object() to zs_malloc() mm: shrinkers: fix race condition on debugfs cleanup maple_tree: make maple state reusable after mas_empty_area() |
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|
Tejun Heo
|
6363845005 |
workqueue: Report work funcs that trigger automatic CPU_INTENSIVE mechanism
Workqueue now automatically marks per-cpu work items that hog CPU for too
long as CPU_INTENSIVE, which excludes them from concurrency management and
prevents stalling other concurrency-managed work items. If a work function
keeps running over the thershold, it likely needs to be switched to use an
unbound workqueue.
This patch adds a debug mechanism which tracks the work functions which
trigger the automatic CPU_INTENSIVE mechanism and report them using
pr_warn() with exponential backoff.
v3: Documentation update.
v2: Drop bouncing to kthread_worker for printing messages. It was to avoid
introducing circular locking dependency through printk but not effective
as it still had pool lock -> wci_lock -> printk -> pool lock loop. Let's
just print directly using printk_deferred().
Signed-off-by: Tejun Heo <tj@kernel.org>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
|
||
|
Peng Zhang
|
0257d9908d |
maple_tree: make maple state reusable after mas_empty_area()
Make mas->min and mas->max point to a node range instead of a leaf entry
range. This allows mas to still be usable after mas_empty_area() returns.
Users would get unexpected results from other operations on the maple
state after calling the affected function.
For example, x86 MAP_32BIT mmap() acts as if there is no suitable gap when
there should be one.
Link: https://lkml.kernel.org/r/20230505145829.74574-1-zhangpeng.00@bytedance.com
Fixes:
|
||
|
Nick Desaulniers
|
08e4044243 |
ubsan: remove cc-option test for UBSAN_TRAP
-fsanitize-undefined-trap-on-error has been supported since GCC 5.1 and Clang 3.2. The minimum supported version of these according to Documentation/process/changes.rst is 5.1 and 11.0.0 respectively. Drop this cc-option check. Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230407215406.768464-1-ndesaulniers@google.com |
||
|
Kees Cook
|
3bf301e1ab |
string: Add Kunit tests for strcat() family
Add tests to make sure the strcat() family of functions behave correctly. Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Kees Cook
|
a9dc8d0442 |
fortify: Allow KUnit test to build without FORTIFY
In order for CI systems to notice all the skipped tests related to CONFIG_FORTIFY_SOURCE, allow the FORTIFY_SOURCE KUnit tests to build with or without CONFIG_FORTIFY_SOURCE. Signed-off-by: Kees Cook <keescook@chromium.org> |
||
|
Kees Cook
|
2d47c6956a |
ubsan: Tighten UBSAN_BOUNDS on GCC
The use of -fsanitize=bounds on GCC will ignore some trailing arrays, leaving a gap in coverage. Switch to using -fsanitize=bounds-strict to match Clang's stricter behavior. Cc: Marco Elver <elver@google.com> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Nicolas Schier <nicolas@fjasle.eu> Cc: Tom Rix <trix@redhat.com> Cc: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Miroslav Benes <mbenes@suse.cz> Cc: linux-kbuild@vger.kernel.org Cc: llvm@lists.linux.dev Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20230405022356.gonna.338-kees@kernel.org |
||
|
David Gow
|
a5ce66ad29 |
kunit: example: Provide example exit functions
Add an example .exit and .suite_exit function to the KUnit example suite. Given exit functions are a bit more subtle than init functions (due to running in a different kthread, and running even after tests or test init functions fail), providing an easy place to experiment with them is useful. Reviewed-by: Rae Moar <rmoar@google.com> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
David Gow
|
55e8c1b49a |
kunit: Always run cleanup from a test kthread
KUnit tests run in a kthread, with the current->kunit_test pointer set to the test's context. This allows the kunit_get_current_test() and kunit_fail_current_test() macros to work. Normally, this pointer is still valid during test shutdown (i.e., the suite->exit function, and any resource cleanup). However, if the test has exited early (e.g., due to a failed assertion), the cleanup is done in the parent KUnit thread, which does not have an active context. Instead, in the event test terminates early, run the test exit and cleanup from a new 'cleanup' kthread, which sets current->kunit_test, and better isolates the rest of KUnit from issues which arise in test cleanup. If a test cleanup function itself aborts (e.g., due to an assertion failing), there will be no further attempts to clean up: an error will be logged and the test failed. For example: # example_simple_test: test aborted during cleanup. continuing without cleaning up This should also make it easier to get access to the KUnit context, particularly from within resource cleanup functions, which may, for example, need access to data in test->priv. Reviewed-by: Benjamin Berg <benjamin.berg@intel.com> Reviewed-by: Maxime Ripard <maxime@cerno.tech> Tested-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Linus Torvalds
|
6e27831b91 |
Networking fixes for 6.4-rc2, including fixes from netfilter
Current release - regressions:
- mtk_eth_soc: fix NULL pointer dereference
Previous releases - regressions:
- core:
- skb_partial_csum_set() fix against transport header magic value
- fix load-tearing on sk->sk_stamp in sock_recv_cmsgs().
- annotate sk->sk_err write from do_recvmmsg()
- add vlan_get_protocol_and_depth() helper
- netlink: annotate accesses to nlk->cb_running
- netfilter: always release netdev hooks from notifier
Previous releases - always broken:
- core: deal with most data-races in sk_wait_event()
- netfilter: fix possible bug_on with enable_hooks=1
- eth: bonding: fix send_peer_notif overflow
- eth: xpcs: fix incorrect number of interfaces
- eth: ipvlan: fix out-of-bounds caused by unclear skb->cb
- eth: stmmac: Initialize MAC_ONEUS_TIC_COUNTER register
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from netfilter.
Current release - regressions:
- mtk_eth_soc: fix NULL pointer dereference
Previous releases - regressions:
- core:
- skb_partial_csum_set() fix against transport header magic value
- fix load-tearing on sk->sk_stamp in sock_recv_cmsgs().
- annotate sk->sk_err write from do_recvmmsg()
- add vlan_get_protocol_and_depth() helper
- netlink: annotate accesses to nlk->cb_running
- netfilter: always release netdev hooks from notifier
Previous releases - always broken:
- core: deal with most data-races in sk_wait_event()
- netfilter: fix possible bug_on with enable_hooks=1
- eth: bonding: fix send_peer_notif overflow
- eth: xpcs: fix incorrect number of interfaces
- eth: ipvlan: fix out-of-bounds caused by unclear skb->cb
- eth: stmmac: Initialize MAC_ONEUS_TIC_COUNTER register"
* tag 'net-6.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (31 commits)
af_unix: Fix data races around sk->sk_shutdown.
af_unix: Fix a data race of sk->sk_receive_queue->qlen.
net: datagram: fix data-races in datagram_poll()
net: mscc: ocelot: fix stat counter register values
ipvlan:Fix out-of-bounds caused by unclear skb->cb
docs: networking: fix x25-iface.rst heading & index order
gve: Remove the code of clearing PBA bit
tcp: add annotations around sk->sk_shutdown accesses
net: add vlan_get_protocol_and_depth() helper
net: pcs: xpcs: fix incorrect number of interfaces
net: deal with most data-races in sk_wait_event()
net: annotate sk->sk_err write from do_recvmmsg()
netlink: annotate accesses to nlk->cb_running
kselftest: bonding: add num_grat_arp test
selftests: forwarding: lib: add netns support for tc rule handle stats get
Documentation: bonding: fix the doc of peer_notif_delay
bonding: fix send_peer_notif overflow
net: ethernet: mtk_eth_soc: fix NULL pointer dereference
selftests: nft_flowtable.sh: check ingress/egress chain too
selftests: nft_flowtable.sh: monitor result file sizes
...
|
||
|
Roy Novich
|
162bd18eb5 |
linux/dim: Do nothing if no time delta between samples
Add return value for dim_calc_stats. This is an indication for the
caller if curr_stats was assigned by the function. Avoid using
curr_stats uninitialized over {rdma/net}_dim, when no time delta between
samples. Coverity reported this potential use of an uninitialized
variable.
Fixes:
|
||
|
Linus Torvalds
|
17784de648 |
A single fix for debugobjects:
The recent fix to ensure atomicity of lookup and allocation inadvertently broke the pool refill mechanism, so that debugobject OOMs now in certain situations. The reason is that the functions which got updated no longer invoke debug_objecs_init(), which is now the only place to care about refilling the tracking object pool. Restore the original behaviour by adding explicit refill opportunities to those places. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmRWoFATHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYocNID/9e1fU2Nf32woHokzBGgARKb69Kl/hb 6yVdMpOnZtxmluheJLnqCWI4WbAB6NjulEMFv+KkwRZ+QndBKVEo8NMZ9RjbXDBb HEehI6DvsqRDjaytOLEZj+/8afcZ7bUBKk7JuUK+y5B1gZViazfp1eF3hpiKsIV9 aowpH6c9lL/9sPgFe2qpp21MUmNTUQbHpz0vbYC0QjqSEU2zTlu8p//P6VLA3xpl qoh8Gu5qo/L8lPspN2v8TRVXdiqH67J+KpbGO9IuUQWYPQqFdc6WchhHwomAk8nr Nyn9Q1Lred96pTdW3B0Cumnxuf0VPt4X/uQxPSP0kCo/h0Q0Mh6fq59Z66H/Mhjk TAvM52w3VzfTmQB6WgaCD1HyRRqIK5Nd+XqXnenCkHN4kjmGXNLg9MUGxua5CVgF iQTSRYtN18rF9OevDOFGzsEig2RN1JFi9MnJg9Q/L8SoDUn5ZUfhPaSA/HcOBnSe m+9aeRxlb0hAP7+upFKsJkDYzJTtbP6LSx6qqZMyQWqYdsUVHpdiPtJpXb7mLIqQ wo83i/Ohq8+dF6ykd89ZcKJ8vLBrnE1rPFKKmvS5ov1eRt/hZbtR3tmMviCNna0M 2nrJE2fKClbs8Dmc6NNboJdz51ASgZEi32XmdFkATiuZqiD1id7ne0f85ju7DHD9 sOjfo4ZtIKD/Fw== =/0Kc -----END PGP SIGNATURE----- Merge tag 'core-debugobjects-2023-05-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull debugobjects fix from Thomas Gleixner: "A single fix for debugobjects: The recent fix to ensure atomicity of lookup and allocation inadvertently broke the pool refill mechanism, so that debugobject OOMs now in certain situations. The reason is that the functions which got updated no longer invoke debug_objecs_init(), which is now the only place to care about refilling the tracking object pool. Restore the original behaviour by adding explicit refill opportunities to those places" * tag 'core-debugobjects-2023-05-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: debugobject: Ensure pool refill (again) |
||
|
Linus Torvalds
|
15fb96a35d |
- Some DAMON cleanups from Kefeng Wang
- Some KSM work from David Hildenbrand, to make the PR_SET_MEMORY_MERGE ioctl's behavior more similar to KSM's behavior. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZFLsxAAKCRDdBJ7gKXxA jl8yAQCqjstPsOULf9QN0z4bGAUhY+Wj4ERz1jbKSIuhFCJWiQEAgQvgRXObKjmi OtUB0Ek4CMDCQzbyIQ1Bhp3kxi6+Jgs= =AbyC -----END PGP SIGNATURE----- Merge tag 'mm-stable-2023-05-03-16-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull more MM updates from Andrew Morton: - Some DAMON cleanups from Kefeng Wang - Some KSM work from David Hildenbrand, to make the PR_SET_MEMORY_MERGE ioctl's behavior more similar to KSM's behavior. [ Andrew called these "final", but I suspect we'll have a series fixing up the fact that the last commit in the dmapools series in the previous pull seems to have unintentionally just reverted all the other commits in the same series.. - Linus ] * tag 'mm-stable-2023-05-03-16-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm: hwpoison: coredump: support recovery from dump_user_range() mm/page_alloc: add some comments to explain the possible hole in __pageblock_pfn_to_page() mm/ksm: move disabling KSM from s390/gmap code to KSM code selftests/ksm: ksm_functional_tests: add prctl unmerge test mm/ksm: unmerge and clear VM_MERGEABLE when setting PR_SET_MEMORY_MERGE=0 mm/damon/paddr: fix missing folio_sz update in damon_pa_young() mm/damon/paddr: minor refactor of damon_pa_mark_accessed_or_deactivate() mm/damon/paddr: minor refactor of damon_pa_pageout() |
||
|
Kefeng Wang
|
245f092268 |
mm: hwpoison: coredump: support recovery from dump_user_range()
dump_user_range() is used to copy the user page to a coredump file, but if a hardware memory error occurred during copy, which called from __kernel_write_iter() in dump_user_range(), it crashes, CPU: 112 PID: 7014 Comm: mca-recover Not tainted 6.3.0-rc2 #425 pc : __memcpy+0x110/0x260 lr : _copy_from_iter+0x3bc/0x4c8 ... Call trace: __memcpy+0x110/0x260 copy_page_from_iter+0xcc/0x130 pipe_write+0x164/0x6d8 __kernel_write_iter+0x9c/0x210 dump_user_range+0xc8/0x1d8 elf_core_dump+0x308/0x368 do_coredump+0x2e8/0xa40 get_signal+0x59c/0x788 do_signal+0x118/0x1f8 do_notify_resume+0xf0/0x280 el0_da+0x130/0x138 el0t_64_sync_handler+0x68/0xc0 el0t_64_sync+0x188/0x190 Generally, the '->write_iter' of file ops will use copy_page_from_iter() and copy_page_from_iter_atomic(), change memcpy() to copy_mc_to_kernel() in both of them to handle #MC during source read, which stop coredump processing and kill the task instead of kernel panic, but the source address may not always a user address, so introduce a new copy_mc flag in struct iov_iter{} to indicate that the iter could do a safe memory copy, also introduce the helpers to set/cleck the flag, for now, it's only used in coredump's dump_user_range(), but it could expand to any other scenarios to fix the similar issue. Link: https://lkml.kernel.org/r/20230417045323.11054-1-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Christian Brauner <brauner@kernel.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Tong Tiangen <tongtiangen@huawei.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peter Zijlstra
|
0cce06ba85 |
debugobjects,locking: Annotate debug_object_fill_pool() wait type violation
There is an explicit wait-type violation in debug_object_fill_pool() for PREEMPT_RT=n kernels which allows them to more easily fill the object pool and reduce the chance of allocation failures. Lockdep's wait-type checks are designed to check the PREEMPT_RT locking rules even for PREEMPT_RT=n kernels and object to this, so create a lockdep annotation to allow this to stand. Specifically, create a 'lock' type that overrides the inner wait-type while it is held -- allowing one to temporarily raise it, such that the violation is hidden. Reported-by: Vlastimil Babka <vbabka@suse.cz> Reported-by: Qi Zheng <zhengqi.arch@bytedance.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Qi Zheng <zhengqi.arch@bytedance.com> Link: https://lkml.kernel.org/r/20230429100614.GA1489784@hirez.programming.kicks-ass.net |
||
|
Thomas Gleixner
|
0af462f19e |
debugobject: Ensure pool refill (again)
The recent fix to ensure atomicity of lookup and allocation inadvertently
broke the pool refill mechanism.
Prior to that change debug_objects_activate() and debug_objecs_assert_init()
invoked debug_objecs_init() to set up the tracking object for statically
initialized objects. That's not longer the case and debug_objecs_init() is
now the only place which does pool refills.
Depending on the number of statically initialized objects this can be
enough to actually deplete the pool, which was observed by Ido via a
debugobjects OOM warning.
Restore the old behaviour by adding explicit refill opportunities to
debug_objects_activate() and debug_objecs_assert_init().
Fixes:
|
||
|
Linus Torvalds
|
10de638d8e |
s390 updates for the 6.4 merge window
- Add support for stackleak feature. Also allow specifying architecture-specific stackleak poison function to enable faster implementation. On s390, the mvc-based implementation helps decrease typical overhead from a factor of 3 to just 25% - Convert all assembler files to use SYM* style macros, deprecating the ENTRY() macro and other annotations. Select ARCH_USE_SYM_ANNOTATIONS - Improve KASLR to also randomize module and special amode31 code base load addresses - Rework decompressor memory tracking to support memory holes and improve error handling - Add support for protected virtualization AP binding - Add support for set_direct_map() calls - Implement set_memory_rox() and noexec module_alloc() - Remove obsolete overriding of mem*() functions for KASAN - Rework kexec/kdump to avoid using nodat_stack to call purgatory - Convert the rest of the s390 code to use flexible-array member instead of a zero-length array - Clean up uaccess inline asm - Enable ARCH_HAS_MEMBARRIER_SYNC_CORE - Convert to using CONFIG_FUNCTION_ALIGNMENT and enable DEBUG_FORCE_FUNCTION_ALIGN_64B - Resolve last_break in userspace fault reports - Simplify one-level sysctl registration - Clean up branch prediction handling - Rework CPU counter facility to retrieve available counter sets just once - Other various small fixes and improvements all over the code -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAmRM8pwACgkQjYWKoQLX FBjV1AgAlvAhu1XkwOdwqdT4GqE8pcN4XXzydog1MYihrSO2PdgWAxpEW7o2QURN W+3xa6RIqt7nX2YBiwTanMZ12TYaFY7noGl3eUpD/NhueprweVirVl7VZUEuRoW/ j0mbx77xsVzLfuDFxkpVwE6/j+tTO78kLyjUHwcN9rFVUaL7/orJneDJf+V8fZG0 sHLOv0aljF7Jr2IIkw82lCmW/vdk7k0dACWMXK2kj1H3dIK34B9X4AdKDDf/WKXk /OSElBeZ93tSGEfNDRIda6iR52xocROaRnQAaDtargKFl9VO0/dN9ADxO+SLNHjN pFE/9VD6xT/xo4IuZZh/Z3TcYfiLvA== =Geqx -----END PGP SIGNATURE----- Merge tag 's390-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Add support for stackleak feature. Also allow specifying architecture-specific stackleak poison function to enable faster implementation. On s390, the mvc-based implementation helps decrease typical overhead from a factor of 3 to just 25% - Convert all assembler files to use SYM* style macros, deprecating the ENTRY() macro and other annotations. Select ARCH_USE_SYM_ANNOTATIONS - Improve KASLR to also randomize module and special amode31 code base load addresses - Rework decompressor memory tracking to support memory holes and improve error handling - Add support for protected virtualization AP binding - Add support for set_direct_map() calls - Implement set_memory_rox() and noexec module_alloc() - Remove obsolete overriding of mem*() functions for KASAN - Rework kexec/kdump to avoid using nodat_stack to call purgatory - Convert the rest of the s390 code to use flexible-array member instead of a zero-length array - Clean up uaccess inline asm - Enable ARCH_HAS_MEMBARRIER_SYNC_CORE - Convert to using CONFIG_FUNCTION_ALIGNMENT and enable DEBUG_FORCE_FUNCTION_ALIGN_64B - Resolve last_break in userspace fault reports - Simplify one-level sysctl registration - Clean up branch prediction handling - Rework CPU counter facility to retrieve available counter sets just once - Other various small fixes and improvements all over the code * tag 's390-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (118 commits) s390/stackleak: provide fast __stackleak_poison() implementation stackleak: allow to specify arch specific stackleak poison function s390: select ARCH_USE_SYM_ANNOTATIONS s390/mm: use VM_FLUSH_RESET_PERMS in module_alloc() s390: wire up memfd_secret system call s390/mm: enable ARCH_HAS_SET_DIRECT_MAP s390/mm: use BIT macro to generate SET_MEMORY bit masks s390/relocate_kernel: adjust indentation s390/relocate_kernel: use SYM* macros instead of ENTRY(), etc. s390/entry: use SYM* macros instead of ENTRY(), etc. s390/purgatory: use SYM* macros instead of ENTRY(), etc. s390/kprobes: use SYM* macros instead of ENTRY(), etc. s390/reipl: use SYM* macros instead of ENTRY(), etc. s390/head64: use SYM* macros instead of ENTRY(), etc. s390/earlypgm: use SYM* macros instead of ENTRY(), etc. s390/mcount: use SYM* macros instead of ENTRY(), etc. s390/crc32le: use SYM* macros instead of ENTRY(), etc. s390/crc32be: use SYM* macros instead of ENTRY(), etc. s390/crypto,chacha: use SYM* macros instead of ENTRY(), etc. s390/amode31: use SYM* macros instead of ENTRY(), etc. ... |
||
|
Linus Torvalds
|
d579c468d7 |
tracing updates for 6.4:
- User events are finally ready!
After lots of collaboration between various parties, we finally locked
down on a stable interface for user events that can also work with user
space only tracing. This is implemented by telling the kernel (or user
space library, but that part is user space only and not part of this
patch set), where the variable is that the application uses to know if
something is listening to the trace. There's also an interface to tell
the kernel about these events, which will show up in the
/sys/kernel/tracing/events/user_events/ directory, where it can be
enabled. When it's enabled, the kernel will update the variable, to tell
the application to start writing to the kernel.
See https://lwn.net/Articles/927595/
- Cleaned up the direct trampolines code to simplify arm64 addition of
direct trampolines. Direct trampolines use the ftrace interface but
instead of jumping to the ftrace trampoline, applications (mostly BPF)
can register their own trampoline for performance reasons.
- Some updates to the fprobe infrastructure. fprobes are more efficient than
kprobes, as it does not need to save all the registers that kprobes on
ftrace do. More work needs to be done before the fprobes will be exposed
as dynamic events.
- More updates to references to the obsolete path of
/sys/kernel/debug/tracing for the new /sys/kernel/tracing path.
- Add a seq_buf_do_printk() helper to seq_bufs, to print a large buffer line
by line instead of all at once. There's users in production kernels that
have a large data dump that originally used printk() directly, but the
data dump was larger than what printk() allowed as a single print.
Using seq_buf() to do the printing fixes that.
- Add /sys/kernel/tracing/touched_functions that shows all functions that
was every traced by ftrace or a direct trampoline. This is used for
debugging issues where a traced function could have caused a crash by
a bpf program or live patching.
- Add a "fields" option that is similar to "raw" but outputs the fields of
the events. It's easier to read by humans.
- Some minor fixes and clean ups.
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Merge tag 'trace-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
- User events are finally ready!
After lots of collaboration between various parties, we finally
locked down on a stable interface for user events that can also work
with user space only tracing.
This is implemented by telling the kernel (or user space library, but
that part is user space only and not part of this patch set), where
the variable is that the application uses to know if something is
listening to the trace.
There's also an interface to tell the kernel about these events,
which will show up in the /sys/kernel/tracing/events/user_events/
directory, where it can be enabled.
When it's enabled, the kernel will update the variable, to tell the
application to start writing to the kernel.
See https://lwn.net/Articles/927595/
- Cleaned up the direct trampolines code to simplify arm64 addition of
direct trampolines.
Direct trampolines use the ftrace interface but instead of jumping to
the ftrace trampoline, applications (mostly BPF) can register their
own trampoline for performance reasons.
- Some updates to the fprobe infrastructure. fprobes are more efficient
than kprobes, as it does not need to save all the registers that
kprobes on ftrace do. More work needs to be done before the fprobes
will be exposed as dynamic events.
- More updates to references to the obsolete path of
/sys/kernel/debug/tracing for the new /sys/kernel/tracing path.
- Add a seq_buf_do_printk() helper to seq_bufs, to print a large buffer
line by line instead of all at once.
There are users in production kernels that have a large data dump
that originally used printk() directly, but the data dump was larger
than what printk() allowed as a single print.
Using seq_buf() to do the printing fixes that.
- Add /sys/kernel/tracing/touched_functions that shows all functions
that was every traced by ftrace or a direct trampoline. This is used
for debugging issues where a traced function could have caused a
crash by a bpf program or live patching.
- Add a "fields" option that is similar to "raw" but outputs the fields
of the events. It's easier to read by humans.
- Some minor fixes and clean ups.
* tag 'trace-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (41 commits)
ring-buffer: Sync IRQ works before buffer destruction
tracing: Add missing spaces in trace_print_hex_seq()
ring-buffer: Ensure proper resetting of atomic variables in ring_buffer_reset_online_cpus
recordmcount: Fix memory leaks in the uwrite function
tracing/user_events: Limit max fault-in attempts
tracing/user_events: Prevent same address and bit per process
tracing/user_events: Ensure bit is cleared on unregister
tracing/user_events: Ensure write index cannot be negative
seq_buf: Add seq_buf_do_printk() helper
tracing: Fix print_fields() for __dyn_loc/__rel_loc
tracing/user_events: Set event filter_type from type
ring-buffer: Clearly check null ptr returned by rb_set_head_page()
tracing: Unbreak user events
tracing/user_events: Use print_format_fields() for trace output
tracing/user_events: Align structs with tabs for readability
tracing/user_events: Limit global user_event count
tracing/user_events: Charge event allocs to cgroups
tracing/user_events: Update documentation for ABI
tracing/user_events: Use write ABI in example
tracing/user_events: Add ABI self-test
...
|
||
|
Linus Torvalds
|
f20730efbd |
SMP cross-CPU function-call updates for v6.4:
- Remove diagnostics and adjust config for CSD lock diagnostics
- Add a generic IPI-sending tracepoint, as currently there's no easy
way to instrument IPI origins: it's arch dependent and for some
major architectures it's not even consistently available.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'smp-core-2023-04-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SMP cross-CPU function-call updates from Ingo Molnar:
- Remove diagnostics and adjust config for CSD lock diagnostics
- Add a generic IPI-sending tracepoint, as currently there's no easy
way to instrument IPI origins: it's arch dependent and for some major
architectures it's not even consistently available.
* tag 'smp-core-2023-04-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
trace,smp: Trace all smp_function_call*() invocations
trace: Add trace_ipi_send_cpu()
sched, smp: Trace smp callback causing an IPI
smp: reword smp call IPI comment
treewide: Trace IPIs sent via smp_send_reschedule()
irq_work: Trace self-IPIs sent via arch_irq_work_raise()
smp: Trace IPIs sent via arch_send_call_function_ipi_mask()
sched, smp: Trace IPIs sent via send_call_function_single_ipi()
trace: Add trace_ipi_send_cpumask()
kernel/smp: Make csdlock_debug= resettable
locking/csd_lock: Remove per-CPU data indirection from CSD lock debugging
locking/csd_lock: Remove added data from CSD lock debugging
locking/csd_lock: Add Kconfig option for csd_debug default
|
||
|
Linus Torvalds
|
33afd4b763 |
Mainly singleton patches all over the place. Series of note are:
- updates to scripts/gdb from Glenn Washburn - kexec cleanups from Bjorn Helgaas -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZEr+6wAKCRDdBJ7gKXxA jn4NAP4u/hj/kR2dxYehcVLuQqJspCRZZBZlAReFJyHNQO6voAEAk0NN9rtG2+/E r0G29CJhK+YL0W6mOs8O1yo9J1rZnAM= =2CUV -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2023-04-27-16-01' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: "Mainly singleton patches all over the place. Series of note are: - updates to scripts/gdb from Glenn Washburn - kexec cleanups from Bjorn Helgaas" * tag 'mm-nonmm-stable-2023-04-27-16-01' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (50 commits) mailmap: add entries for Paul Mackerras libgcc: add forward declarations for generic library routines mailmap: add entry for Oleksandr ocfs2: reduce ioctl stack usage fs/proc: add Kthread flag to /proc/$pid/status ia64: fix an addr to taddr in huge_pte_offset() checkpatch: introduce proper bindings license check epoll: rename global epmutex scripts/gdb: add GDB convenience functions $lx_dentry_name() and $lx_i_dentry() scripts/gdb: create linux/vfs.py for VFS related GDB helpers uapi/linux/const.h: prefer ISO-friendly __typeof__ delayacct: track delays from IRQ/SOFTIRQ scripts/gdb: timerlist: convert int chunks to str scripts/gdb: print interrupts scripts/gdb: raise error with reduced debugging information scripts/gdb: add a Radix Tree Parser lib/rbtree: use '+' instead of '|' for setting color. proc/stat: remove arch_idle_time() checkpatch: check for misuse of the link tags checkpatch: allow Closes tags with links ... |
||
|
Linus Torvalds
|
7fa8a8ee94 |
- Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of
switching from a user process to a kernel thread.
- More folio conversions from Kefeng Wang, Zhang Peng and Pankaj Raghav.
- zsmalloc performance improvements from Sergey Senozhatsky.
- Yue Zhao has found and fixed some data race issues around the
alteration of memcg userspace tunables.
- VFS rationalizations from Christoph Hellwig:
- removal of most of the callers of write_one_page().
- make __filemap_get_folio()'s return value more useful
- Luis Chamberlain has changed tmpfs so it no longer requires swap
backing. Use `mount -o noswap'.
- Qi Zheng has made the slab shrinkers operate locklessly, providing
some scalability benefits.
- Keith Busch has improved dmapool's performance, making part of its
operations O(1) rather than O(n).
- Peter Xu adds the UFFD_FEATURE_WP_UNPOPULATED feature to userfaultd,
permitting userspace to wr-protect anon memory unpopulated ptes.
- Kirill Shutemov has changed MAX_ORDER's meaning to be inclusive rather
than exclusive, and has fixed a bunch of errors which were caused by its
unintuitive meaning.
- Axel Rasmussen give userfaultfd the UFFDIO_CONTINUE_MODE_WP feature,
which causes minor faults to install a write-protected pte.
- Vlastimil Babka has done some maintenance work on vma_merge():
cleanups to the kernel code and improvements to our userspace test
harness.
- Cleanups to do_fault_around() by Lorenzo Stoakes.
- Mike Rapoport has moved a lot of initialization code out of various
mm/ files and into mm/mm_init.c.
- Lorenzo Stoakes removd vmf_insert_mixed_prot(), which was added for
DRM, but DRM doesn't use it any more.
- Lorenzo has also coverted read_kcore() and vread() to use iterators
and has thereby removed the use of bounce buffers in some cases.
- Lorenzo has also contributed further cleanups of vma_merge().
- Chaitanya Prakash provides some fixes to the mmap selftesting code.
- Matthew Wilcox changes xfs and afs so they no longer take sleeping
locks in ->map_page(), a step towards RCUification of pagefaults.
- Suren Baghdasaryan has improved mmap_lock scalability by switching to
per-VMA locking.
- Frederic Weisbecker has reworked the percpu cache draining so that it
no longer causes latency glitches on cpu isolated workloads.
- Mike Rapoport cleans up and corrects the ARCH_FORCE_MAX_ORDER Kconfig
logic.
- Liu Shixin has changed zswap's initialization so we no longer waste a
chunk of memory if zswap is not being used.
- Yosry Ahmed has improved the performance of memcg statistics flushing.
- David Stevens has fixed several issues involving khugepaged,
userfaultfd and shmem.
- Christoph Hellwig has provided some cleanup work to zram's IO-related
code paths.
- David Hildenbrand has fixed up some issues in the selftest code's
testing of our pte state changing.
- Pankaj Raghav has made page_endio() unneeded and has removed it.
- Peter Xu contributed some rationalizations of the userfaultfd
selftests.
- Yosry Ahmed has fixed an issue around memcg's page recalim accounting.
- Chaitanya Prakash has fixed some arm-related issues in the
selftests/mm code.
- Longlong Xia has improved the way in which KSM handles hwpoisoned
pages.
- Peter Xu fixes a few issues with uffd-wp at fork() time.
- Stefan Roesch has changed KSM so that it may now be used on a
per-process and per-cgroup basis.
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Merge tag 'mm-stable-2023-04-27-15-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of
switching from a user process to a kernel thread.
- More folio conversions from Kefeng Wang, Zhang Peng and Pankaj
Raghav.
- zsmalloc performance improvements from Sergey Senozhatsky.
- Yue Zhao has found and fixed some data race issues around the
alteration of memcg userspace tunables.
- VFS rationalizations from Christoph Hellwig:
- removal of most of the callers of write_one_page()
- make __filemap_get_folio()'s return value more useful
- Luis Chamberlain has changed tmpfs so it no longer requires swap
backing. Use `mount -o noswap'.
- Qi Zheng has made the slab shrinkers operate locklessly, providing
some scalability benefits.
- Keith Busch has improved dmapool's performance, making part of its
operations O(1) rather than O(n).
- Peter Xu adds the UFFD_FEATURE_WP_UNPOPULATED feature to userfaultd,
permitting userspace to wr-protect anon memory unpopulated ptes.
- Kirill Shutemov has changed MAX_ORDER's meaning to be inclusive
rather than exclusive, and has fixed a bunch of errors which were
caused by its unintuitive meaning.
- Axel Rasmussen give userfaultfd the UFFDIO_CONTINUE_MODE_WP feature,
which causes minor faults to install a write-protected pte.
- Vlastimil Babka has done some maintenance work on vma_merge():
cleanups to the kernel code and improvements to our userspace test
harness.
- Cleanups to do_fault_around() by Lorenzo Stoakes.
- Mike Rapoport has moved a lot of initialization code out of various
mm/ files and into mm/mm_init.c.
- Lorenzo Stoakes removd vmf_insert_mixed_prot(), which was added for
DRM, but DRM doesn't use it any more.
- Lorenzo has also coverted read_kcore() and vread() to use iterators
and has thereby removed the use of bounce buffers in some cases.
- Lorenzo has also contributed further cleanups of vma_merge().
- Chaitanya Prakash provides some fixes to the mmap selftesting code.
- Matthew Wilcox changes xfs and afs so they no longer take sleeping
locks in ->map_page(), a step towards RCUification of pagefaults.
- Suren Baghdasaryan has improved mmap_lock scalability by switching to
per-VMA locking.
- Frederic Weisbecker has reworked the percpu cache draining so that it
no longer causes latency glitches on cpu isolated workloads.
- Mike Rapoport cleans up and corrects the ARCH_FORCE_MAX_ORDER Kconfig
logic.
- Liu Shixin has changed zswap's initialization so we no longer waste a
chunk of memory if zswap is not being used.
- Yosry Ahmed has improved the performance of memcg statistics
flushing.
- David Stevens has fixed several issues involving khugepaged,
userfaultfd and shmem.
- Christoph Hellwig has provided some cleanup work to zram's IO-related
code paths.
- David Hildenbrand has fixed up some issues in the selftest code's
testing of our pte state changing.
- Pankaj Raghav has made page_endio() unneeded and has removed it.
- Peter Xu contributed some rationalizations of the userfaultfd
selftests.
- Yosry Ahmed has fixed an issue around memcg's page recalim
accounting.
- Chaitanya Prakash has fixed some arm-related issues in the
selftests/mm code.
- Longlong Xia has improved the way in which KSM handles hwpoisoned
pages.
- Peter Xu fixes a few issues with uffd-wp at fork() time.
- Stefan Roesch has changed KSM so that it may now be used on a
per-process and per-cgroup basis.
* tag 'mm-stable-2023-04-27-15-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (369 commits)
mm,unmap: avoid flushing TLB in batch if PTE is inaccessible
shmem: restrict noswap option to initial user namespace
mm/khugepaged: fix conflicting mods to collapse_file()
sparse: remove unnecessary 0 values from rc
mm: move 'mmap_min_addr' logic from callers into vm_unmapped_area()
hugetlb: pte_alloc_huge() to replace huge pte_alloc_map()
maple_tree: fix allocation in mas_sparse_area()
mm: do not increment pgfault stats when page fault handler retries
zsmalloc: allow only one active pool compaction context
selftests/mm: add new selftests for KSM
mm: add new KSM process and sysfs knobs
mm: add new api to enable ksm per process
mm: shrinkers: fix debugfs file permissions
mm: don't check VMA write permissions if the PTE/PMD indicates write permissions
migrate_pages_batch: fix statistics for longterm pin retry
userfaultfd: use helper function range_in_vma()
lib/show_mem.c: use for_each_populated_zone() simplify code
mm: correct arg in reclaim_pages()/reclaim_clean_pages_from_list()
fs/buffer: convert create_page_buffers to folio_create_buffers
fs/buffer: add folio_create_empty_buffers helper
...
|
||
|
Linus Torvalds
|
8ccd54fe45 |
virtio,vhost,vdpa: features, fixes, cleanups
reduction in interrupt rate in virtio perf improvement for VDUSE scalability for vhost-scsi non power of 2 ring support for packed rings better management for mlx5 vdpa suspend for snet VIRTIO_F_NOTIFICATION_DATA shared backend with vdpa-sim-blk user VA support in vdpa-sim better struct packing for virtio fixes, cleanups all over the place Signed-off-by: Michael S. Tsirkin <mst@redhat.com> -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAmRG+QcPHG1zdEByZWRo YXQuY29tAAoJECgfDbjSjVRpMyAIALpq8Z9ljl7ADGLuvt/xeCnIdifo7NXam71s +algalRplF3QplnMxZ0vH19Z8Gvyl18fkk/l0tHoCrZZgyseYR6DbyZXPv8YIfFh NSBokhil+ZURH6eNJc2PLcBUF3QIL3rSv7tBq7/++PN3KIqdHIePbyUFLlwqb272 NLkOkHT30QBtncRWJORj/GqDxi/4H1zHDmfMd6xD/1B6IrC3gin205RnLuCa2H65 bP0IE025VrmrRqNGX7nhi7dIFo6SmMPwG5O0YWeEhFHaSOL9PJM/Z9EN4tLhC1v1 Y34fryH9e+MMSgBnCK2ExxTq/pGWsbhPbvisDfDf3M1m1HHfhYI= =N1SV -----END PGP SIGNATURE----- Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost Pull virtio updates from Michael Tsirkin: "virtio,vhost,vdpa: features, fixes, and cleanups: - reduction in interrupt rate in virtio - perf improvement for VDUSE - scalability for vhost-scsi - non power of 2 ring support for packed rings - better management for mlx5 vdpa - suspend for snet - VIRTIO_F_NOTIFICATION_DATA - shared backend with vdpa-sim-blk - user VA support in vdpa-sim - better struct packing for virtio and fixes, cleanups all over the place" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (52 commits) vhost_vdpa: fix unmap process in no-batch mode MAINTAINERS: make me a reviewer of VIRTIO CORE AND NET DRIVERS tools/virtio: fix build caused by virtio_ring changes virtio_ring: add a struct device forward declaration vdpa_sim_blk: support shared backend vdpa_sim: move buffer allocation in the devices vdpa/snet: use likely/unlikely macros in hot functions vdpa/snet: implement kick_vq_with_data callback virtio-vdpa: add VIRTIO_F_NOTIFICATION_DATA feature support virtio: add VIRTIO_F_NOTIFICATION_DATA feature support vdpa/snet: support the suspend vDPA callback vdpa/snet: support getting and setting VQ state MAINTAINERS: add vringh.h to Virtio Core and Net Drivers vringh: address kdoc warnings vdpa: address kdoc warnings virtio_ring: don't update event idx on get_buf vdpa_sim: add support for user VA vdpa_sim: replace the spinlock with a mutex to protect the state vdpa_sim: use kthread worker vdpa_sim: make devices agnostic for work management ... |
||
|
Linus Torvalds
|
b6a7828502 |
modules-6.4-rc1
The summary of the changes for this pull requests is:
* Song Liu's new struct module_memory replacement
* Nick Alcock's MODULE_LICENSE() removal for non-modules
* My cleanups and enhancements to reduce the areas where we vmalloc
module memory for duplicates, and the respective debug code which
proves the remaining vmalloc pressure comes from userspace.
Most of the changes have been in linux-next for quite some time except
the minor fixes I made to check if a module was already loaded
prior to allocating the final module memory with vmalloc and the
respective debug code it introduces to help clarify the issue. Although
the functional change is small it is rather safe as it can only *help*
reduce vmalloc space for duplicates and is confirmed to fix a bootup
issue with over 400 CPUs with KASAN enabled. I don't expect stable
kernels to pick up that fix as the cleanups would have also had to have
been picked up. Folks on larger CPU systems with modules will want to
just upgrade if vmalloc space has been an issue on bootup.
Given the size of this request, here's some more elaborate details
on this pull request.
The functional change change in this pull request is the very first
patch from Song Liu which replaces the struct module_layout with a new
struct module memory. The old data structure tried to put together all
types of supported module memory types in one data structure, the new
one abstracts the differences in memory types in a module to allow each
one to provide their own set of details. This paves the way in the
future so we can deal with them in a cleaner way. If you look at changes
they also provide a nice cleanup of how we handle these different memory
areas in a module. This change has been in linux-next since before the
merge window opened for v6.3 so to provide more than a full kernel cycle
of testing. It's a good thing as quite a bit of fixes have been found
for it.
Jason Baron then made dynamic debug a first class citizen module user by
using module notifier callbacks to allocate / remove module specific
dynamic debug information.
Nick Alcock has done quite a bit of work cross-tree to remove module
license tags from things which cannot possibly be module at my request
so to:
a) help him with his longer term tooling goals which require a
deterministic evaluation if a piece a symbol code could ever be
part of a module or not. But quite recently it is has been made
clear that tooling is not the only one that would benefit.
Disambiguating symbols also helps efforts such as live patching,
kprobes and BPF, but for other reasons and R&D on this area
is active with no clear solution in sight.
b) help us inch closer to the now generally accepted long term goal
of automating all the MODULE_LICENSE() tags from SPDX license tags
In so far as a) is concerned, although module license tags are a no-op
for non-modules, tools which would want create a mapping of possible
modules can only rely on the module license tag after the commit
|
||
|
Linus Torvalds
|
556eb8b791 |
Driver core changes for 6.4-rc1
Here is the large set of driver core changes for 6.4-rc1. Once again, a busy development cycle, with lots of changes happening in the driver core in the quest to be able to move "struct bus" and "struct class" into read-only memory, a task now complete with these changes. This will make the future rust interactions with the driver core more "provably correct" as well as providing more obvious lifetime rules for all busses and classes in the kernel. The changes required for this did touch many individual classes and busses as many callbacks were changed to take const * parameters instead. All of these changes have been submitted to the various subsystem maintainers, giving them plenty of time to review, and most of them actually did so. Other than those changes, included in here are a small set of other things: - kobject logging improvements - cacheinfo improvements and updates - obligatory fw_devlink updates and fixes - documentation updates - device property cleanups and const * changes - firwmare loader dependency fixes. All of these have been in linux-next for a while with no reported problems. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZEp7Sw8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ykitQCfamUHpxGcKOAGuLXMotXNakTEsxgAoIquENm5 LEGadNS38k5fs+73UaxV =7K4B -----END PGP SIGNATURE----- Merge tag 'driver-core-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the large set of driver core changes for 6.4-rc1. Once again, a busy development cycle, with lots of changes happening in the driver core in the quest to be able to move "struct bus" and "struct class" into read-only memory, a task now complete with these changes. This will make the future rust interactions with the driver core more "provably correct" as well as providing more obvious lifetime rules for all busses and classes in the kernel. The changes required for this did touch many individual classes and busses as many callbacks were changed to take const * parameters instead. All of these changes have been submitted to the various subsystem maintainers, giving them plenty of time to review, and most of them actually did so. Other than those changes, included in here are a small set of other things: - kobject logging improvements - cacheinfo improvements and updates - obligatory fw_devlink updates and fixes - documentation updates - device property cleanups and const * changes - firwmare loader dependency fixes. All of these have been in linux-next for a while with no reported problems" * tag 'driver-core-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (120 commits) device property: make device_property functions take const device * driver core: update comments in device_rename() driver core: Don't require dynamic_debug for initcall_debug probe timing firmware_loader: rework crypto dependencies firmware_loader: Strip off \n from customized path zram: fix up permission for the hot_add sysfs file cacheinfo: Add use_arch[|_cache]_info field/function arch_topology: Remove early cacheinfo error message if -ENOENT cacheinfo: Check cache properties are present in DT cacheinfo: Check sib_leaf in cache_leaves_are_shared() cacheinfo: Allow early level detection when DT/ACPI info is missing/broken cacheinfo: Add arm64 early level initializer implementation cacheinfo: Add arch specific early level initializer tty: make tty_class a static const structure driver core: class: remove struct class_interface * from callbacks driver core: class: mark the struct class in struct class_interface constant driver core: class: make class_register() take a const * driver core: class: mark class_release() as taking a const * driver core: remove incorrect comment for device_create* MIPS: vpe-cmp: remove module owner pointer from struct class usage. ... |
||
|
Linus Torvalds
|
6e98b09da9 |
Networking changes for 6.4.
Core
----
- Introduce a config option to tweak MAX_SKB_FRAGS. Increasing the
default value allows for better BIG TCP performances.
- Reduce compound page head access for zero-copy data transfers.
- RPS/RFS improvements, avoiding unneeded NET_RX_SOFTIRQ when possible.
- Threaded NAPI improvements, adding defer skb free support and unneeded
softirq avoidance.
- Address dst_entry reference count scalability issues, via false
sharing avoidance and optimize refcount tracking.
- Add lockless accesses annotation to sk_err[_soft].
- Optimize again the skb struct layout.
- Extends the skb drop reasons to make it usable by multiple
subsystems.
- Better const qualifier awareness for socket casts.
BPF
---
- Add skb and XDP typed dynptrs which allow BPF programs for more
ergonomic and less brittle iteration through data and variable-sized
accesses.
- Add a new BPF netfilter program type and minimal support to hook
BPF programs to netfilter hooks such as prerouting or forward.
- Add more precise memory usage reporting for all BPF map types.
- Adds support for using {FOU,GUE} encap with an ipip device operating
in collect_md mode and add a set of BPF kfuncs for controlling encap
params.
- Allow BPF programs to detect at load time whether a particular kfunc
exists or not, and also add support for this in light skeleton.
- Bigger batch of BPF verifier improvements to prepare for upcoming BPF
open-coded iterators allowing for less restrictive looping capabilities.
- Rework RCU enforcement in the verifier, add kptr_rcu and enforce BPF
programs to NULL-check before passing such pointers into kfunc.
- Add support for kptrs in percpu hashmaps, percpu LRU hashmaps and in
local storage maps.
- Enable RCU semantics for task BPF kptrs and allow referenced kptr
tasks to be stored in BPF maps.
- Add support for refcounted local kptrs to the verifier for allowing
shared ownership, useful for adding a node to both the BPF list and
rbtree.
- Add BPF verifier support for ST instructions in convert_ctx_access()
which will help new -mcpu=v4 clang flag to start emitting them.
- Add ARM32 USDT support to libbpf.
- Improve bpftool's visual program dump which produces the control
flow graph in a DOT format by adding C source inline annotations.
Protocols
---------
- IPv4: Allow adding to IPv4 address a 'protocol' tag. Such value
indicates the provenance of the IP address.
- IPv6: optimize route lookup, dropping unneeded R/W lock acquisition.
- Add the handshake upcall mechanism, allowing the user-space
to implement generic TLS handshake on kernel's behalf.
- Bridge: support per-{Port, VLAN} neighbor suppression, increasing
resilience to nodes failures.
- SCTP: add support for Fair Capacity and Weighted Fair Queueing
schedulers.
- MPTCP: delay first subflow allocation up to its first usage. This
will allow for later better LSM interaction.
- xfrm: Remove inner/outer modes from input/output path. These are
not needed anymore.
- WiFi:
- reduced neighbor report (RNR) handling for AP mode
- HW timestamping support
- support for randomized auth/deauth TA for PASN privacy
- per-link debugfs for multi-link
- TC offload support for mac80211 drivers
- mac80211 mesh fast-xmit and fast-rx support
- enable Wi-Fi 7 (EHT) mesh support
Netfilter
---------
- Add nf_tables 'brouting' support, to force a packet to be routed
instead of being bridged.
- Update bridge netfilter and ovs conntrack helpers to handle
IPv6 Jumbo packets properly, i.e. fetch the packet length
from hop-by-hop extension header. This is needed for BIT TCP
support.
- The iptables 32bit compat interface isn't compiled in by default
anymore.
- Move ip(6)tables builtin icmp matches to the udptcp one.
This has the advantage that icmp/icmpv6 match doesn't load the
iptables/ip6tables modules anymore when iptables-nft is used.
- Extended netlink error report for netdevice in flowtables and
netdev/chains. Allow for incrementally add/delete devices to netdev
basechain. Allow to create netdev chain without device.
Driver API
----------
- Remove redundant Device Control Error Reporting Enable, as PCI core
has already error reporting enabled at enumeration time.
- Move Multicast DB netlink handlers to core, allowing devices other
then bridge to use them.
- Allow the page_pool to directly recycle the pages from safely
localized NAPI.
- Implement lockless TX queue stop/wake combo macros, allowing for
further code de-duplication and sanitization.
- Add YNL support for user headers and struct attrs.
- Add partial YNL specification for devlink.
- Add partial YNL specification for ethtool.
- Add tc-mqprio and tc-taprio support for preemptible traffic classes.
- Add tx push buf len param to ethtool, specifies the maximum number
of bytes of a transmitted packet a driver can push directly to the
underlying device.
- Add basic LED support for switch/phy.
- Add NAPI documentation, stop relaying on external links.
- Convert dsa_master_ioctl() to netdev notifier. This is a preparatory
work to make the hardware timestamping layer selectable by user
space.
- Add transceiver support and improve the error messages for CAN-FD
controllers.
New hardware / drivers
----------------------
- Ethernet:
- AMD/Pensando core device support
- MediaTek MT7981 SoC
- MediaTek MT7988 SoC
- Broadcom BCM53134 embedded switch
- Texas Instruments CPSW9G ethernet switch
- Qualcomm EMAC3 DWMAC ethernet
- StarFive JH7110 SoC
- NXP CBTX ethernet PHY
- WiFi:
- Apple M1 Pro/Max devices
- RealTek rtl8710bu/rtl8188gu
- RealTek rtl8822bs, rtl8822cs and rtl8821cs SDIO chipset
- Bluetooth:
- Realtek RTL8821CS, RTL8851B, RTL8852BS
- Mediatek MT7663, MT7922
- NXP w8997
- Actions Semi ATS2851
- QTI WCN6855
- Marvell 88W8997
- Can:
- STMicroelectronics bxcan stm32f429
Drivers
-------
- Ethernet NICs:
- Intel (1G, icg):
- add tracking and reporting of QBV config errors.
- add support for configuring max SDU for each Tx queue.
- Intel (100G, ice):
- refactor mailbox overflow detection to support Scalable IOV
- GNSS interface optimization
- Intel (i40e):
- support XDP multi-buffer
- nVidia/Mellanox:
- add the support for linux bridge multicast offload
- enable TC offload for egress and engress MACVLAN over bond
- add support for VxLAN GBP encap/decap flows offload
- extend packet offload to fully support libreswan
- support tunnel mode in mlx5 IPsec packet offload
- extend XDP multi-buffer support
- support MACsec VLAN offload
- add support for dynamic msix vectors allocation
- drop RX page_cache and fully use page_pool
- implement thermal zone to report NIC temperature
- Netronome/Corigine:
- add support for multi-zone conntrack offload
- Solarflare/Xilinx:
- support offloading TC VLAN push/pop actions to the MAE
- support TC decap rules
- support unicast PTP
- Other NICs:
- Broadcom (bnxt): enforce software based freq adjustments only
on shared PHC NIC
- RealTek (r8169): refactor to addess ASPM issues during NAPI poll.
- Micrel (lan8841): add support for PTP_PF_PEROUT
- Cadence (macb): enable PTP unicast
- Engleder (tsnep): add XDP socket zero-copy support
- virtio-net: implement exact header length guest feature
- veth: add page_pool support for page recycling
- vxlan: add MDB data path support
- gve: add XDP support for GQI-QPL format
- geneve: accept every ethertype
- macvlan: allow some packets to bypass broadcast queue
- mana: add support for jumbo frame
- Ethernet high-speed switches:
- Microchip (sparx5): Add support for TC flower templates.
- Ethernet embedded switches:
- Broadcom (b54):
- configure 6318 and 63268 RGMII ports
- Marvell (mv88e6xxx):
- faster C45 bus scan
- Microchip:
- lan966x:
- add support for IS1 VCAP
- better TX/RX from/to CPU performances
- ksz9477: add ETS Qdisc support
- ksz8: enhance static MAC table operations and error handling
- sama7g5: add PTP capability
- NXP (ocelot):
- add support for external ports
- add support for preemptible traffic classes
- Texas Instruments:
- add CPSWxG SGMII support for J7200 and J721E
- Intel WiFi (iwlwifi):
- preparation for Wi-Fi 7 EHT and multi-link support
- EHT (Wi-Fi 7) sniffer support
- hardware timestamping support for some devices/firwmares
- TX beacon protection on newer hardware
- Qualcomm 802.11ax WiFi (ath11k):
- MU-MIMO parameters support
- ack signal support for management packets
- RealTek WiFi (rtw88):
- SDIO bus support
- better support for some SDIO devices
(e.g. MAC address from efuse)
- RealTek WiFi (rtw89):
- HW scan support for 8852b
- better support for 6 GHz scanning
- support for various newer firmware APIs
- framework firmware backwards compatibility
- MediaTek WiFi (mt76):
- P2P support
- mesh A-MSDU support
- EHT (Wi-Fi 7) support
- coredump support
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"Core:
- Introduce a config option to tweak MAX_SKB_FRAGS. Increasing the
default value allows for better BIG TCP performances
- Reduce compound page head access for zero-copy data transfers
- RPS/RFS improvements, avoiding unneeded NET_RX_SOFTIRQ when
possible
- Threaded NAPI improvements, adding defer skb free support and
unneeded softirq avoidance
- Address dst_entry reference count scalability issues, via false
sharing avoidance and optimize refcount tracking
- Add lockless accesses annotation to sk_err[_soft]
- Optimize again the skb struct layout
- Extends the skb drop reasons to make it usable by multiple
subsystems
- Better const qualifier awareness for socket casts
BPF:
- Add skb and XDP typed dynptrs which allow BPF programs for more
ergonomic and less brittle iteration through data and
variable-sized accesses
- Add a new BPF netfilter program type and minimal support to hook
BPF programs to netfilter hooks such as prerouting or forward
- Add more precise memory usage reporting for all BPF map types
- Adds support for using {FOU,GUE} encap with an ipip device
operating in collect_md mode and add a set of BPF kfuncs for
controlling encap params
- Allow BPF programs to detect at load time whether a particular
kfunc exists or not, and also add support for this in light
skeleton
- Bigger batch of BPF verifier improvements to prepare for upcoming
BPF open-coded iterators allowing for less restrictive looping
capabilities
- Rework RCU enforcement in the verifier, add kptr_rcu and enforce
BPF programs to NULL-check before passing such pointers into kfunc
- Add support for kptrs in percpu hashmaps, percpu LRU hashmaps and
in local storage maps
- Enable RCU semantics for task BPF kptrs and allow referenced kptr
tasks to be stored in BPF maps
- Add support for refcounted local kptrs to the verifier for allowing
shared ownership, useful for adding a node to both the BPF list and
rbtree
- Add BPF verifier support for ST instructions in
convert_ctx_access() which will help new -mcpu=v4 clang flag to
start emitting them
- Add ARM32 USDT support to libbpf
- Improve bpftool's visual program dump which produces the control
flow graph in a DOT format by adding C source inline annotations
Protocols:
- IPv4: Allow adding to IPv4 address a 'protocol' tag. Such value
indicates the provenance of the IP address
- IPv6: optimize route lookup, dropping unneeded R/W lock acquisition
- Add the handshake upcall mechanism, allowing the user-space to
implement generic TLS handshake on kernel's behalf
- Bridge: support per-{Port, VLAN} neighbor suppression, increasing
resilience to nodes failures
- SCTP: add support for Fair Capacity and Weighted Fair Queueing
schedulers
- MPTCP: delay first subflow allocation up to its first usage. This
will allow for later better LSM interaction
- xfrm: Remove inner/outer modes from input/output path. These are
not needed anymore
- WiFi:
- reduced neighbor report (RNR) handling for AP mode
- HW timestamping support
- support for randomized auth/deauth TA for PASN privacy
- per-link debugfs for multi-link
- TC offload support for mac80211 drivers
- mac80211 mesh fast-xmit and fast-rx support
- enable Wi-Fi 7 (EHT) mesh support
Netfilter:
- Add nf_tables 'brouting' support, to force a packet to be routed
instead of being bridged
- Update bridge netfilter and ovs conntrack helpers to handle IPv6
Jumbo packets properly, i.e. fetch the packet length from
hop-by-hop extension header. This is needed for BIT TCP support
- The iptables 32bit compat interface isn't compiled in by default
anymore
- Move ip(6)tables builtin icmp matches to the udptcp one. This has
the advantage that icmp/icmpv6 match doesn't load the
iptables/ip6tables modules anymore when iptables-nft is used
- Extended netlink error report for netdevice in flowtables and
netdev/chains. Allow for incrementally add/delete devices to netdev
basechain. Allow to create netdev chain without device
Driver API:
- Remove redundant Device Control Error Reporting Enable, as PCI core
has already error reporting enabled at enumeration time
- Move Multicast DB netlink handlers to core, allowing devices other
then bridge to use them
- Allow the page_pool to directly recycle the pages from safely
localized NAPI
- Implement lockless TX queue stop/wake combo macros, allowing for
further code de-duplication and sanitization
- Add YNL support for user headers and struct attrs
- Add partial YNL specification for devlink
- Add partial YNL specification for ethtool
- Add tc-mqprio and tc-taprio support for preemptible traffic classes
- Add tx push buf len param to ethtool, specifies the maximum number
of bytes of a transmitted packet a driver can push directly to the
underlying device
- Add basic LED support for switch/phy
- Add NAPI documentation, stop relaying on external links
- Convert dsa_master_ioctl() to netdev notifier. This is a
preparatory work to make the hardware timestamping layer selectable
by user space
- Add transceiver support and improve the error messages for CAN-FD
controllers
New hardware / drivers:
- Ethernet:
- AMD/Pensando core device support
- MediaTek MT7981 SoC
- MediaTek MT7988 SoC
- Broadcom BCM53134 embedded switch
- Texas Instruments CPSW9G ethernet switch
- Qualcomm EMAC3 DWMAC ethernet
- StarFive JH7110 SoC
- NXP CBTX ethernet PHY
- WiFi:
- Apple M1 Pro/Max devices
- RealTek rtl8710bu/rtl8188gu
- RealTek rtl8822bs, rtl8822cs and rtl8821cs SDIO chipset
- Bluetooth:
- Realtek RTL8821CS, RTL8851B, RTL8852BS
- Mediatek MT7663, MT7922
- NXP w8997
- Actions Semi ATS2851
- QTI WCN6855
- Marvell 88W8997
- Can:
- STMicroelectronics bxcan stm32f429
Drivers:
- Ethernet NICs:
- Intel (1G, icg):
- add tracking and reporting of QBV config errors
- add support for configuring max SDU for each Tx queue
- Intel (100G, ice):
- refactor mailbox overflow detection to support Scalable IOV
- GNSS interface optimization
- Intel (i40e):
- support XDP multi-buffer
- nVidia/Mellanox:
- add the support for linux bridge multicast offload
- enable TC offload for egress and engress MACVLAN over bond
- add support for VxLAN GBP encap/decap flows offload
- extend packet offload to fully support libreswan
- support tunnel mode in mlx5 IPsec packet offload
- extend XDP multi-buffer support
- support MACsec VLAN offload
- add support for dynamic msix vectors allocation
- drop RX page_cache and fully use page_pool
- implement thermal zone to report NIC temperature
- Netronome/Corigine:
- add support for multi-zone conntrack offload
- Solarflare/Xilinx:
- support offloading TC VLAN push/pop actions to the MAE
- support TC decap rules
- support unicast PTP
- Other NICs:
- Broadcom (bnxt): enforce software based freq adjustments only on
shared PHC NIC
- RealTek (r8169): refactor to addess ASPM issues during NAPI poll
- Micrel (lan8841): add support for PTP_PF_PEROUT
- Cadence (macb): enable PTP unicast
- Engleder (tsnep): add XDP socket zero-copy support
- virtio-net: implement exact header length guest feature
- veth: add page_pool support for page recycling
- vxlan: add MDB data path support
- gve: add XDP support for GQI-QPL format
- geneve: accept every ethertype
- macvlan: allow some packets to bypass broadcast queue
- mana: add support for jumbo frame
- Ethernet high-speed switches:
- Microchip (sparx5): Add support for TC flower templates
- Ethernet embedded switches:
- Broadcom (b54):
- configure 6318 and 63268 RGMII ports
- Marvell (mv88e6xxx):
- faster C45 bus scan
- Microchip:
- lan966x:
- add support for IS1 VCAP
- better TX/RX from/to CPU performances
- ksz9477: add ETS Qdisc support
- ksz8: enhance static MAC table operations and error handling
- sama7g5: add PTP capability
- NXP (ocelot):
- add support for external ports
- add support for preemptible traffic classes
- Texas Instruments:
- add CPSWxG SGMII support for J7200 and J721E
- Intel WiFi (iwlwifi):
- preparation for Wi-Fi 7 EHT and multi-link support
- EHT (Wi-Fi 7) sniffer support
- hardware timestamping support for some devices/firwmares
- TX beacon protection on newer hardware
- Qualcomm 802.11ax WiFi (ath11k):
- MU-MIMO parameters support
- ack signal support for management packets
- RealTek WiFi (rtw88):
- SDIO bus support
- better support for some SDIO devices (e.g. MAC address from
efuse)
- RealTek WiFi (rtw89):
- HW scan support for 8852b
- better support for 6 GHz scanning
- support for various newer firmware APIs
- framework firmware backwards compatibility
- MediaTek WiFi (mt76):
- P2P support
- mesh A-MSDU support
- EHT (Wi-Fi 7) support
- coredump support"
* tag 'net-next-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2078 commits)
net: phy: hide the PHYLIB_LEDS knob
net: phy: marvell-88x2222: remove unnecessary (void*) conversions
tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp.
net: amd: Fix link leak when verifying config failed
net: phy: marvell: Fix inconsistent indenting in led_blink_set
lan966x: Don't use xdp_frame when action is XDP_TX
tsnep: Add XDP socket zero-copy TX support
tsnep: Add XDP socket zero-copy RX support
tsnep: Move skb receive action to separate function
tsnep: Add functions for queue enable/disable
tsnep: Rework TX/RX queue initialization
tsnep: Replace modulo operation with mask
net: phy: dp83867: Add led_brightness_set support
net: phy: Fix reading LED reg property
drivers: nfc: nfcsim: remove return value check of `dev_dir`
net: phy: dp83867: Remove unnecessary (void*) conversions
net: ethtool: coalesce: try to make user settings stick twice
net: mana: Check if netdev/napi_alloc_frag returns single page
net: mana: Rename mana_refill_rxoob and remove some empty lines
net: veth: add page_pool stats
...
|
||
|
Linus Torvalds
|
9dd6956b38 |
for-6.4/block-2023-04-21
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Merge tag 'for-6.4/block-2023-04-21' of git://git.kernel.dk/linux
Pull block updates from Jens Axboe:
- drbd patches, bringing us closer to unifying the out-of-tree version
and the in tree one (Andreas, Christoph)
- support for auto-quiesce for the s390 dasd driver (Stefan)
- MD pull request via Song:
- md/bitmap: Optimal last page size (Jon Derrick)
- Various raid10 fixes (Yu Kuai, Li Nan)
- md: add error_handlers for raid0 and linear (Mariusz Tkaczyk)
- NVMe pull request via Christoph:
- Drop redundant pci_enable_pcie_error_reporting (Bjorn Helgaas)
- Validate nvmet module parameters (Chaitanya Kulkarni)
- Fence TCP socket on receive error (Chris Leech)
- Fix async event trace event (Keith Busch)
- Minor cleanups (Chaitanya Kulkarni, zhenwei pi)
- Fix and cleanup nvmet Identify handling (Damien Le Moal,
Christoph Hellwig)
- Fix double blk_mq_complete_request race in the timeout handler
(Lei Yin)
- Fix irq locking in nvme-fcloop (Ming Lei)
- Remove queue mapping helper for rdma devices (Sagi Grimberg)
- use structured request attribute checks for nbd (Jakub)
- fix blk-crypto race conditions between keyslot management (Eric)
- add sed-opal support for reading read locking range attributes
(Ondrej)
- make fault injection configurable for null_blk (Akinobu)
- clean up the request insertion API (Christoph)
- clean up the queue running API (Christoph)
- blkg config helper cleanups (Tejun)
- lazy init support for blk-iolatency (Tejun)
- various fixes and tweaks to ublk (Ming)
- remove hybrid polling. It hasn't really been useful since we got
async polled IO support, and these days we don't support sync polled
IO at all (Keith)
- misc fixes, cleanups, improvements (Zhong, Ondrej, Colin, Chengming,
Chaitanya, me)
* tag 'for-6.4/block-2023-04-21' of git://git.kernel.dk/linux: (118 commits)
nbd: fix incomplete validation of ioctl arg
ublk: don't return 0 in case of any failure
sed-opal: geometry feature reporting command
null_blk: Always check queue mode setting from configfs
block: ublk: switch to ioctl command encoding
blk-mq: fix the blk_mq_add_to_requeue_list call in blk_kick_flush
block, bfq: Fix division by zero error on zero wsum
fault-inject: fix build error when FAULT_INJECTION_CONFIGFS=y and CONFIGFS_FS=m
block: store bdev->bd_disk->fops->submit_bio state in bdev
block: re-arrange the struct block_device fields for better layout
md/raid5: remove unused working_disks variable
md/raid10: don't call bio_start_io_acct twice for bio which experienced read error
md/raid10: fix memleak of md thread
md/raid10: fix memleak for 'conf->bio_split'
md/raid10: fix leak of 'r10bio->remaining' for recovery
md/raid10: don't BUG_ON() in raise_barrier()
md: fix soft lockup in status_resync
md: add error_handlers for raid0 and linear
md: Use optimal I/O size for last bitmap page
md: Fix types in sb writer
...
|
||
|
Linus Torvalds
|
85d7ab2463 |
for-6.4-tag
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Merge tag 'for-6.4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"Mostly core changes and cleanups, some notable fixes and two
performance improvements in directory logging.
The IO path cleanups are removing or refactoring old code, scrub main
loop has been completely rewritten also refactoring old code.
There are some changes to non-btrfs code, mostly trivial, the cgroup
punt bio logic is only moved from generic code.
Performance improvements:
- improve logging changes in a directory during one transaction,
avoid iterating over items and reduce lock contention (fsync time
4x lower)
- when logging directory entries during one transaction, reduce
locking of subvolume trees by checking tree-log instead
(improvement in throughput and latency for concurrent access to a
subvolume)
Notable fixes:
- dev-replace:
- properly honor read mode when requested to avoid reading from
source device
- target device won't be used for eventual read repair, this is
unreliable for NODATASUM files
- when there are unpaired (and unrepairable) metadata during
replace, exit early with error and don't try to finish whole
operation
- scrub ioctl properly rejects unknown flags
- fix global block reserve calculations
- fix partial direct io write when there's a page fault in the
middle, iomap will try to continue with partial request but the
btrfs part did not match that, this can lead to zeros written
instead of data
Core changes:
- io path:
- continued cleanups and refactoring around bio handling
- extent io submit path simplifications and cleanups
- flush write path simplifications and cleanups
- rework logic of passing sync mode of bio, with further cleanups
- rewrite scrub code flow, restructure how the stripes are enumerated
and verified in a more unified way
- allow to set lower threshold for block group reclaim in debug mode
to aid zoned mode testing
- remove obsolete time-based delayed ref throttling logic when
truncating items
- DREW locks are not using percpu variables anymore
- more warning fixes (-Wmaybe-uninitialized)
- u64 division simplifications
- error handling improvements
Non-btrfs code changes:
- push cgroup punt bio logic to btrfs code (there was no other user
of that), the functionality can be now selected separately by
BLK_CGROUP_PUNT_BIO
- crc32c_impl removed after removing last uses in btrfs code
- add btrfs_assertfail() to objtool table"
* tag 'for-6.4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (147 commits)
btrfs: mark btrfs_assertfail() __noreturn
btrfs: fix uninitialized variable warnings
btrfs: use log root when iterating over index keys when logging directory
btrfs: avoid iterating over all indexes when logging directory
btrfs: dev-replace: error out if we have unrepaired metadata error during
btrfs: remove pointless loop at btrfs_get_next_valid_item()
btrfs: scrub: reject unsupported scrub flags
btrfs: reinterpret async discard iops_limit=0 as no delay
btrfs: set default discard iops_limit to 1000
btrfs: remove unused raid56 functions which were dedicated for scrub
btrfs: scrub: remove scrub_bio structure
btrfs: scrub: remove scrub_block and scrub_sector structures
btrfs: scrub: remove the old scrub recheck code
btrfs: scrub: remove the old writeback infrastructure
btrfs: scrub: remove scrub_parity structure
btrfs: scrub: use scrub_stripe to implement RAID56 P/Q scrub
btrfs: scrub: switch scrub_simple_mirror() to scrub_stripe infrastructure
btrfs: scrub: introduce helper to queue a stripe for scrub
btrfs: scrub: introduce error reporting functionality for scrub_stripe
btrfs: scrub: introduce a writeback helper for scrub_stripe
...
|
||
|
Linus Torvalds
|
733f7e9c18 |
This update includes the following changes:
API:
- Total usage stats now include all that returned error (instead of some).
- Remove maximum hash statesize limit.
- Add cloning support for hmac and unkeyed hashes.
- Demote BUG_ON in crypto_unregister_alg to a WARN_ON.
Algorithms:
- Use RIP-relative addressing on x86 to prepare for PIE build.
- Add accelerated AES/GCM stitched implementation on powerpc P10.
- Add some test vectors for cmac(camellia).
- Remove failure case where jent is unavailable outside of FIPS mode in drbg.
- Add permanent and intermittent health error checks in jitter RNG.
Drivers:
- Add support for 402xx devices in qat.
- Add support for HiSTB TRNG.
- Fix hash concurrency issues in stm32.
- Add OP-TEE firmware support in caam.
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Merge tag 'v6.4-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"API:
- Total usage stats now include all that returned errors (instead of
just some)
- Remove maximum hash statesize limit
- Add cloning support for hmac and unkeyed hashes
- Demote BUG_ON in crypto_unregister_alg to a WARN_ON
Algorithms:
- Use RIP-relative addressing on x86 to prepare for PIE build
- Add accelerated AES/GCM stitched implementation on powerpc P10
- Add some test vectors for cmac(camellia)
- Remove failure case where jent is unavailable outside of FIPS mode
in drbg
- Add permanent and intermittent health error checks in jitter RNG
Drivers:
- Add support for 402xx devices in qat
- Add support for HiSTB TRNG
- Fix hash concurrency issues in stm32
- Add OP-TEE firmware support in caam"
* tag 'v6.4-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (139 commits)
i2c: designware: Add doorbell support for Mendocino
i2c: designware: Use PCI PSP driver for communication
powerpc: Move Power10 feature PPC_MODULE_FEATURE_P10
crypto: p10-aes-gcm - Remove POWER10_CPU dependency
crypto: testmgr - Add some test vectors for cmac(camellia)
crypto: cryptd - Add support for cloning hashes
crypto: cryptd - Convert hash to use modern init_tfm/exit_tfm
crypto: hmac - Add support for cloning
crypto: hash - Add crypto_clone_ahash/shash
crypto: api - Add crypto_clone_tfm
crypto: api - Add crypto_tfm_get
crypto: x86/sha - Use local .L symbols for code
crypto: x86/crc32 - Use local .L symbols for code
crypto: x86/aesni - Use local .L symbols for code
crypto: x86/sha256 - Use RIP-relative addressing
crypto: x86/ghash - Use RIP-relative addressing
crypto: x86/des3 - Use RIP-relative addressing
crypto: x86/crc32c - Use RIP-relative addressing
crypto: x86/cast6 - Use RIP-relative addressing
crypto: x86/cast5 - Use RIP-relative addressing
...
|
||
|
Sergey Senozhatsky
|
96928d9032 |
seq_buf: Add seq_buf_do_printk() helper
Sometimes we use seq_buf to format a string buffer, which we then pass to printk(). However, in certain situations the seq_buf string buffer can get too big, exceeding the PRINTKRB_RECORD_MAX bytes limit, and causing printk() to truncate the string. Add a new seq_buf helper. This helper prints the seq_buf string buffer line by line, using \n as a delimiter, rather than passing the whole string buffer to printk() at once. Link: https://lkml.kernel.org/r/20230415100110.1419872-1-senozhatsky@chromium.org Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Tested-by: Yosry Ahmed <yosryahmed@google.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Linus Torvalds
|
7ec85f3e08 |
printk changes for 6.4
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||
|
Linus Torvalds
|
53b5e72b9d |
asm-generic updates for 6.4
These are various cleanups, fixing a number of uapi header files to no longer reference CONFIG_* symbols, and one patch that introduces the new CONFIG_HAS_IOPORT symbol for architectures that provide working inb()/outb() macros, as a preparation for adding driver dependencies on those in the following release. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmRG8IkACgkQYKtH/8kJ Uid15Q/9E/neIIEqEk6IvtyhUicrJiIZUM0rGoYtWXiz75ggk6Kx9+3I+j8zIQ/E kf2TzAG7q9Md7nfTDFLr4FSr0IcNDj+VG4nYxUyDHdKGcARO+g9Kpdvscxip3lgU Rw5w74Gyd30u4iUKGS39OYuxcCgl9LaFjMA9Gh402Oiaoh+OYLmgQS9h/goUD5KN Nd+AoFvkdbnHl0/SpxthLRyL5rFEATBmAY7apYViPyMvfjS3gfDJwXJR9jkKgi6X Qs4t8Op8BA3h84dCuo6VcFqgAJs2Wiq3nyTSUnkF8NxJ2RFTpeiVgfsLOzXHeDgz SKDB4Lp14o3mlyZyj00MWq1uMJRRetUgNiVb6iHOoKQ/E4demBdh+mhIFRybjM5B XNTWFcg9PWFCMa4W9jnLfZBc881X4+7T+qUF8I0W/1AbRJUmyGj8HO6jLceC4yGD UYLn5oFPM6OWXHp6DqJrCr9Yw8h6fuviQZFEbl/ARlgVGt+J4KbYweJYk8DzfX6t PZIj8LskOqyIpRuC2oDA1PHxkaJ1/z+N5oRBHq1uicSh4fxY5HW7HnyzgF08+R3k cf+fjAhC3TfGusHkBwQKQJvpxrxZjPuvYXDZ0GxTvNKJRB8eMeiTm1n41E5oTVwQ swSblSCjZj/fMVVPXLcjxEW4SBNWRxa9Lz3tIPXb3RheU10Lfy8= =H3k4 -----END PGP SIGNATURE----- Merge tag 'asm-generic-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic updates from Arnd Bergmann: "These are various cleanups, fixing a number of uapi header files to no longer reference CONFIG_* symbols, and one patch that introduces the new CONFIG_HAS_IOPORT symbol for architectures that provide working inb()/outb() macros, as a preparation for adding driver dependencies on those in the following release" * tag 'asm-generic-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: Kconfig: introduce HAS_IOPORT option and select it as necessary scripts: Update the CONFIG_* ignore list in headers_install.sh pktcdvd: Remove CONFIG_CDROM_PKTCDVD_WCACHE from uapi header Move bp_type_idx to include/linux/hw_breakpoint.h Move ep_take_care_of_epollwakeup() to fs/eventpoll.c Move COMPAT_ATM_ADDPARTY to net/atm/svc.c |
||
|
Linus Torvalds
|
e7989789c6 |
Timers and timekeeping updates:
- Improve the VDSO build time checks to cover all dynamic relocations
VDSO does not allow dynamic relcations, but the build time check is
incomplete and fragile.
It's based on architectures specifying the relocation types to search
for and does not handle R_*_NONE relocation entries correctly.
R_*_NONE relocations are injected by some GNU ld variants if they fail
to determine the exact .rel[a]/dyn_size to cover trailing zeros.
R_*_NONE relocations must be ignored by dynamic loaders, so they
should be ignored in the build time check too.
Remove the architecture specific relocation types to check for and
validate strictly that no other relocations than R_*_NONE end up
in the VSDO .so file.
- Prefer signal delivery to the current thread for
CLOCK_PROCESS_CPUTIME_ID based posix-timers
Such timers prefer to deliver the signal to the main thread of a
process even if the context in which the timer expires is the current
task. This has the downside that it might wake up an idle thread.
As there is no requirement or guarantee that the signal has to be
delivered to the main thread, avoid this by preferring the current
task if it is part of the thread group which shares sighand.
This not only avoids waking idle threads, it also distributes the
signal delivery in case of multiple timers firing in the context
of different threads close to each other better.
- Align the tick period properly (again)
For a long time the tick was starting at CLOCK_MONOTONIC zero, which
allowed users space applications to either align with the tick or to
place a periodic computation so that it does not interfere with the
tick. The alignement of the tick period was more by chance than by
intention as the tick is set up before a high resolution clocksource is
installed, i.e. timekeeping is still tick based and the tick period
advances from there.
The early enablement of sched_clock() broke this alignement as the time
accumulated by sched_clock() is taken into account when timekeeping is
initialized. So the base value now(CLOCK_MONOTONIC) is not longer a
multiple of tick periods, which breaks applications which relied on
that behaviour.
Cure this by aligning the tick starting point to the next multiple of
tick periods, i.e 1000ms/CONFIG_HZ.
- A set of NOHZ fixes and enhancements
- Cure the concurrent writer race for idle and IO sleeptime statistics
The statitic values which are exposed via /proc/stat are updated from
the CPU local idle exit and remotely by cpufreq, but that happens
without any form of serialization. As a consequence sleeptimes can be
accounted twice or worse.
Prevent this by restricting the accumulation writeback to the CPU
local idle exit and let the remote access compute the accumulated
value.
- Protect idle/iowait sleep time with a sequence count
Reading idle/iowait sleep time, e.g. from /proc/stat, can race with
idle exit updates. As a consequence the readout may result in random
and potentially going backwards values.
Protect this by a sequence count, which fixes the idle time
statistics issue, but cannot fix the iowait time problem because
iowait time accounting races with remote wake ups decrementing the
remote runqueues nr_iowait counter. The latter is impossible to fix,
so the only way to deal with that is to document it properly and to
remove the assertion in the selftest which triggers occasionally due
to that.
- Restructure struct tick_sched for better cache layout
- Some small cleanups and a better cache layout for struct tick_sched
- Implement the missing timer_wait_running() callback for POSIX CPU timers
For unknown reason the introduction of the timer_wait_running() callback
missed to fixup posix CPU timers, which went unnoticed for almost four
years.
While initially only targeted to prevent livelocks between a timer
deletion and the timer expiry function on PREEMPT_RT enabled kernels, it
turned out that fixing this for mainline is not as trivial as just
implementing a stub similar to the hrtimer/timer callbacks.
The reason is that for CONFIG_POSIX_CPU_TIMERS_TASK_WORK enabled systems
there is a livelock issue independent of RT.
CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y moves the expiry of POSIX CPU timers
out from hard interrupt context to task work, which is handled before
returning to user space or to a VM. The expiry mechanism moves the
expired timers to a stack local list head with sighand lock held. Once
sighand is dropped the task can be preempted and a task which wants to
delete a timer will spin-wait until the expiry task is scheduled back
in. In the worst case this will end up in a livelock when the preempting
task and the expiry task are pinned on the same CPU.
The timer wheel has a timer_wait_running() mechanism for RT, which uses
a per CPU timer-base expiry lock which is held by the expiry code and the
task waiting for the timer function to complete blocks on that lock.
This does not work in the same way for posix CPU timers as there is no
timer base and expiry for process wide timers can run on any task
belonging to that process, but the concept of waiting on an expiry lock
can be used too in a slightly different way.
Add a per task mutex to struct posix_cputimers_work, let the expiry task
hold it accross the expiry function and let the deleting task which
waits for the expiry to complete block on the mutex.
In the non-contended case this results in an extra mutex_lock()/unlock()
pair on both sides.
This avoids spin-waiting on a task which is scheduled out, prevents the
livelock and cures the problem for RT and !RT systems.
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Merge tag 'timers-core-2023-04-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timers and timekeeping updates from Thomas Gleixner:
- Improve the VDSO build time checks to cover all dynamic relocations
VDSO does not allow dynamic relocations, but the build time check is
incomplete and fragile.
It's based on architectures specifying the relocation types to search
for and does not handle R_*_NONE relocation entries correctly.
R_*_NONE relocations are injected by some GNU ld variants if they
fail to determine the exact .rel[a]/dyn_size to cover trailing zeros.
R_*_NONE relocations must be ignored by dynamic loaders, so they
should be ignored in the build time check too.
Remove the architecture specific relocation types to check for and
validate strictly that no other relocations than R_*_NONE end up in
the VSDO .so file.
- Prefer signal delivery to the current thread for
CLOCK_PROCESS_CPUTIME_ID based posix-timers
Such timers prefer to deliver the signal to the main thread of a
process even if the context in which the timer expires is the current
task. This has the downside that it might wake up an idle thread.
As there is no requirement or guarantee that the signal has to be
delivered to the main thread, avoid this by preferring the current
task if it is part of the thread group which shares sighand.
This not only avoids waking idle threads, it also distributes the
signal delivery in case of multiple timers firing in the context of
different threads close to each other better.
- Align the tick period properly (again)
For a long time the tick was starting at CLOCK_MONOTONIC zero, which
allowed users space applications to either align with the tick or to
place a periodic computation so that it does not interfere with the
tick. The alignement of the tick period was more by chance than by
intention as the tick is set up before a high resolution clocksource
is installed, i.e. timekeeping is still tick based and the tick
period advances from there.
The early enablement of sched_clock() broke this alignement as the
time accumulated by sched_clock() is taken into account when
timekeeping is initialized. So the base value now(CLOCK_MONOTONIC) is
not longer a multiple of tick periods, which breaks applications
which relied on that behaviour.
Cure this by aligning the tick starting point to the next multiple of
tick periods, i.e 1000ms/CONFIG_HZ.
- A set of NOHZ fixes and enhancements:
* Cure the concurrent writer race for idle and IO sleeptime
statistics
The statitic values which are exposed via /proc/stat are updated
from the CPU local idle exit and remotely by cpufreq, but that
happens without any form of serialization. As a consequence
sleeptimes can be accounted twice or worse.
Prevent this by restricting the accumulation writeback to the CPU
local idle exit and let the remote access compute the accumulated
value.
* Protect idle/iowait sleep time with a sequence count
Reading idle/iowait sleep time, e.g. from /proc/stat, can race
with idle exit updates. As a consequence the readout may result
in random and potentially going backwards values.
Protect this by a sequence count, which fixes the idle time
statistics issue, but cannot fix the iowait time problem because
iowait time accounting races with remote wake ups decrementing
the remote runqueues nr_iowait counter. The latter is impossible
to fix, so the only way to deal with that is to document it
properly and to remove the assertion in the selftest which
triggers occasionally due to that.
* Restructure struct tick_sched for better cache layout
* Some small cleanups and a better cache layout for struct
tick_sched
- Implement the missing timer_wait_running() callback for POSIX CPU
timers
For unknown reason the introduction of the timer_wait_running()
callback missed to fixup posix CPU timers, which went unnoticed for
almost four years.
While initially only targeted to prevent livelocks between a timer
deletion and the timer expiry function on PREEMPT_RT enabled kernels,
it turned out that fixing this for mainline is not as trivial as just
implementing a stub similar to the hrtimer/timer callbacks.
The reason is that for CONFIG_POSIX_CPU_TIMERS_TASK_WORK enabled
systems there is a livelock issue independent of RT.
CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y moves the expiry of POSIX CPU
timers out from hard interrupt context to task work, which is handled
before returning to user space or to a VM. The expiry mechanism moves
the expired timers to a stack local list head with sighand lock held.
Once sighand is dropped the task can be preempted and a task which
wants to delete a timer will spin-wait until the expiry task is
scheduled back in. In the worst case this will end up in a livelock
when the preempting task and the expiry task are pinned on the same
CPU.
The timer wheel has a timer_wait_running() mechanism for RT, which
uses a per CPU timer-base expiry lock which is held by the expiry
code and the task waiting for the timer function to complete blocks
on that lock.
This does not work in the same way for posix CPU timers as there is
no timer base and expiry for process wide timers can run on any task
belonging to that process, but the concept of waiting on an expiry
lock can be used too in a slightly different way.
Add a per task mutex to struct posix_cputimers_work, let the expiry
task hold it accross the expiry function and let the deleting task
which waits for the expiry to complete block on the mutex.
In the non-contended case this results in an extra
mutex_lock()/unlock() pair on both sides.
This avoids spin-waiting on a task which is scheduled out, prevents
the livelock and cures the problem for RT and !RT systems
* tag 'timers-core-2023-04-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
posix-cpu-timers: Implement the missing timer_wait_running callback
selftests/proc: Assert clock_gettime(CLOCK_BOOTTIME) VS /proc/uptime monotonicity
selftests/proc: Remove idle time monotonicity assertions
MAINTAINERS: Remove stale email address
timers/nohz: Remove middle-function __tick_nohz_idle_stop_tick()
timers/nohz: Add a comment about broken iowait counter update race
timers/nohz: Protect idle/iowait sleep time under seqcount
timers/nohz: Only ever update sleeptime from idle exit
timers/nohz: Restructure and reshuffle struct tick_sched
tick/common: Align tick period with the HZ tick.
selftests/timers/posix_timers: Test delivery of signals across threads
posix-timers: Prefer delivery of signals to the current thread
vdso: Improve cmd_vdso_check to check all dynamic relocations
|
||
|
Linus Torvalds
|
29e95a4b26 |
A single update to debugobjects:
Prevent a race vs. statically initialized objects. Such objects are usually not initialized via an init() function. They are special cased and detected on first use under the assumption that they are already correctly initialized via the static initializer. This works correctly unless there are two concurrent debug object operations on such an object. The first one detects that the object is not yet tracked and tries to establish a tracking object after dropping the debug objects hash bucket lock. The concurrent operation does the same. The one which wins the race ends up modifying the state of the object which makes the other one fail resulting in a bogus debug objects warning. Prevent this by making the detection of a static object and the allocation of a tracking object atomic under the hash bucket lock. So the first one to acquire the hash bucket lock will succeed and the second one will observe the correct tracking state. This race existed forever but was only exposed when the timer wheel code added a debug_object_assert_init() call outside of the timer base locked region. This replaced the previous warning about timer::function being NULL which had to be removed when the timer_shutdown() mechanics were added. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmRGfx8THHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYod4YD/98pgjxl9zht0tJpjOQv1GHQeKWGOnS T2NcK7UBF7IZnGVCaQovs1TLPEiHZMY9TgSmefP9UuYNCUthdzgxUv1hljb915zI xcQmqFopUyFF+F+qE7ti1C4HvXzbdss14XK97EcsoooS1ALq5xTkUJEcmdLFRL85 /ACkHz0/iMEHT9QVX6WoAOptg7HLoscb30CEZGa8skStAIRZfMIFqmN5GXzKUsPH oLUldSjoXyqq2ZBu9jiO9GoPmei3VuaZO3qWtN4KYY0C37BvKavgS2N/NsOh7s+0 I51G5+R8o6kQgr3RSll6frsPcy1EXsgPDZXO5tC1W9bp6+yrQ97ztdG0QS52fcPb fcCQtAX3L+K38vf4GfvboDyf7x21leJSYE3u+HCXUlyC2Es8QZgWw4U7Bi8IwSZg /BKC6QkQD/YyG/aQyZq6ZGiLgbJt8g53WiR8HGx35P3RUEy5Mit3bBSuq1dSuGR0 RozFlWswUif3Teticq33MR6Mv9M3866lX4iTMGT50xjJZirb8ongpKkRxIOHVeXV 4//0V/GOswyTwkY884Q6zJCZZq2FEudn6/Vtjh97zLxvJzLbdIEnEPC5HG75Jed0 a9NISg+NT9VOx4PLwgMWgW6dlT5SNUeWD4ddC879c4ELbyNd1i4AY54pMrcwEVVj fGdL6pFfFzZI5w== =19cg -----END PGP SIGNATURE----- Merge tag 'core-debugobjects-2023-04-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull core debugobjects update from Thomas Gleixner: "A single update to debugobjects: Prevent a race vs statically initialized objects. Such objects are usually not initialized via an init() function. They are special cased and detected on first use under the assumption that they are already correctly initialized via the static initializer. This works correctly unless there are two concurrent debug object operations on such an object. The first one detects that the object is not yet tracked and tries to establish a tracking object after dropping the debug objects hash bucket lock. The concurrent operation does the same. The one which wins the race ends up modifying the state of the object which makes the other one fail resulting in a bogus debug objects warning. Prevent this by making the detection of a static object and the allocation of a tracking object atomic under the hash bucket lock. So the first one to acquire the hash bucket lock will succeed and the second one will observe the correct tracking state. This race existed forever but was only exposed when the timer wheel code added a debug_object_assert_init() call outside of the timer base locked region. This replaced the previous warning about timer::function being NULL which had to be removed when the timer_shutdown() mechanics were added" * tag 'core-debugobjects-2023-04-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: debugobject: Prevent init race with static objects |
||
|
Linus Torvalds
|
1be89faab3 |
linux-kselftest-kunit-6.4-rc1
This KUnit update Linux 6.4-rc1 consists of: - several fixes to kunit tool - new klist structure test - support for m68k under QEMU - support for overriding the QEMU serial port - support for SH under QEMU -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmRFYFsACgkQCwJExA0N Qxw+PxAA1KHnHool3QbzZouFgLgTS2N/hxsOIoWKeUl6guUPX0XYu67FEIyt7p5k a1eFLjt+q4URW/heHKYdffP+Up6xhN5yVP8xJEcbn6GD13lz1clI9RAjObiPOehc KOV90PeAEfzosEGRIp97g4Gzu8NUMZqN7BsKBdzYJ4rEftlcjaILBVp4OfSuCyAi UbYBdRjK4eIOwGXuHVfhNqzH1HRSbzcoSRTywj5qW0Qhpe6KnZBRuZESXYBsxzGb G0nd4+OttjZyplI/xQYwaU0XGAI6roG5G4nAT5YGHLp5g8rTaHetTi+i3iK4iEru wEL0NgywkA0ujAge97RldOjtU97vvSFk7FwxdS9lxaMW/Ut2sN72I2ThI8dBvVRZ fcw8t8mmT1gUv3SCq+s1X13vz22IedXLOfvOY2o/fLk2zxOw5e8FirAz/aFeOf3K ++hK+IQvDmeMMv08bz0ORzdRQcjdwQNQ3klnfdrUVFN9yK+iAllOJ/nrXHLNIXu4 c3ITlAMldcAf2W+LRWzvqqKyT4H8MCXL3L0bBc1M1reRu9nM89AZedO8MHCB0R9Q 2ic0rOxIwZzPJuk0qPDxEVmN7Rpyx85I96YOwRemJTEfdkB/ZX+BfOU0KzinOVHC 3qrHuIw/SyRTlUEDAr53gJ5WHbdjhKAmrd1/FuplyoOSX0w6VVA= =COQn -----END PGP SIGNATURE----- Merge tag 'linux-kselftest-kunit-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull KUnit updates from Shuah Khan: - several fixes to kunit tool - new klist structure test - support for m68k under QEMU - support for overriding the QEMU serial port - support for SH under QEMU * tag 'linux-kselftest-kunit-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: add tests for using current KUnit test field kunit: tool: Add support for SH under QEMU kunit: tool: Add support for overriding the QEMU serial port .gitignore: Unignore .kunitconfig list: test: Test the klist structure kunit: increase KUNIT_LOG_SIZE to 2048 bytes kunit: Use gfp in kunit_alloc_resource() kernel-doc kunit: tool: fix pre-existing `mypy --strict` errors and update run_checks.py kunit: tool: remove unused imports and variables kunit: tool: add subscripts for type annotations where appropriate kunit: fix bug of extra newline characters in debugfs logs kunit: fix bug in the order of lines in debugfs logs kunit: fix bug in debugfs logs of parameterized tests kunit: tool: Add support for m68k under QEMU |
||
|
Linus Torvalds
|
5dfb75e842 |
RCU Changes for 6.4:
o MAINTAINERS files additions and changes.
o Fix hotplug warning in nohz code.
o Tick dependency changes by Zqiang.
o Lazy-RCU shrinker fixes by Zqiang.
o rcu-tasks stall reporting improvements by Neeraj.
o Initial changes for renaming of k[v]free_rcu() to its new k[v]free_rcu_mightsleep()
name for robustness.
o Documentation Updates:
o Significant changes to srcu_struct size.
o Deadlock detection for srcu_read_lock() vs synchronize_srcu() from Boqun.
o rcutorture and rcu-related tool, which are targeted for v6.4 from Boqun's tree.
o Other misc changes.
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Merge tag 'rcu.6.4.april5.2023.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux
Pull RCU updates from Joel Fernandes:
- Updates and additions to MAINTAINERS files, with Boqun being added to
the RCU entry and Zqiang being added as an RCU reviewer.
I have also transitioned from reviewer to maintainer; however, Paul
will be taking over sending RCU pull-requests for the next merge
window.
- Resolution of hotplug warning in nohz code, achieved by fixing
cpu_is_hotpluggable() through interaction with the nohz subsystem.
Tick dependency modifications by Zqiang, focusing on fixing usage of
the TICK_DEP_BIT_RCU_EXP bitmask.
- Avoid needless calls to the rcu-lazy shrinker for CONFIG_RCU_LAZY=n
kernels, fixed by Zqiang.
- Improvements to rcu-tasks stall reporting by Neeraj.
- Initial renaming of k[v]free_rcu() to k[v]free_rcu_mightsleep() for
increased robustness, affecting several components like mac802154,
drbd, vmw_vmci, tracing, and more.
A report by Eric Dumazet showed that the API could be unknowingly
used in an atomic context, so we'd rather make sure they know what
they're asking for by being explicit:
https://lore.kernel.org/all/20221202052847.2623997-1-edumazet@google.com/
- Documentation updates, including corrections to spelling,
clarifications in comments, and improvements to the srcu_size_state
comments.
- Better srcu_struct cache locality for readers, by adjusting the size
of srcu_struct in support of SRCU usage by Christoph Hellwig.
- Teach lockdep to detect deadlocks between srcu_read_lock() vs
synchronize_srcu() contributed by Boqun.
Previously lockdep could not detect such deadlocks, now it can.
- Integration of rcutorture and rcu-related tools, targeted for v6.4
from Boqun's tree, featuring new SRCU deadlock scenarios, test_nmis
module parameter, and more
- Miscellaneous changes, various code cleanups and comment improvements
* tag 'rcu.6.4.april5.2023.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux: (71 commits)
checkpatch: Error out if deprecated RCU API used
mac802154: Rename kfree_rcu() to kvfree_rcu_mightsleep()
rcuscale: Rename kfree_rcu() to kfree_rcu_mightsleep()
ext4/super: Rename kfree_rcu() to kfree_rcu_mightsleep()
net/mlx5: Rename kfree_rcu() to kfree_rcu_mightsleep()
net/sysctl: Rename kvfree_rcu() to kvfree_rcu_mightsleep()
lib/test_vmalloc.c: Rename kvfree_rcu() to kvfree_rcu_mightsleep()
tracing: Rename kvfree_rcu() to kvfree_rcu_mightsleep()
misc: vmw_vmci: Rename kvfree_rcu() to kvfree_rcu_mightsleep()
drbd: Rename kvfree_rcu() to kvfree_rcu_mightsleep()
rcu: Protect rcu_print_task_exp_stall() ->exp_tasks access
rcu: Avoid stack overflow due to __rcu_irq_enter_check_tick() being kprobe-ed
rcu-tasks: Report stalls during synchronize_srcu() in rcu_tasks_postscan()
rcu: Permit start_poll_synchronize_rcu_expedited() to be invoked early
rcu: Remove never-set needwake assignment from rcu_report_qs_rdp()
rcu: Register rcu-lazy shrinker only for CONFIG_RCU_LAZY=y kernels
rcu: Fix missing TICK_DEP_MASK_RCU_EXP dependency check
rcu: Fix set/clear TICK_DEP_BIT_RCU_EXP bitmask race
rcu/trace: use strscpy() to instead of strncpy()
tick/nohz: Fix cpu_is_hotpluggable() by checking with nohz subsystem
...
|
||
|
Linus Torvalds
|
487c20b016 |
iov: improve copy_iovec_from_user() code generation
Use the same pattern as the compat version of this code does: instead of copying the whole array to a kernel buffer and then having a separate phase of verifying it, just do it one entry at a time, verifying as you go. On Jens' /dev/zero readv() test this improves performance by ~6%. [ This was obviously triggered by Jens' ITER_UBUF updates series ] Reported-and-tested-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/all/de35d11d-bce7-e976-7372-1f2caf417103@kernel.dk/ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
b9dff2195f |
iter-ubuf.2-2023-04-21
-----BEGIN PGP SIGNATURE----- iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmRCvdsQHGF4Ym9lQGtl cm5lbC5kawAKCRD301j7KXHgpg4oD/457EJ21Fm36NuyT/S0Cr8ok9Tdk7t9BeBh V/9CYThoXr5aqAox0Vq23FF+Rhzm81GzwYERN4493LBblliNeNOo2IaXF9/7qrUW 11v9Bkug2J3k3hRGtEa6Zl0EpMu+FRLsNpchjFS2KPuOq+iMDxrvwuy50kidWg7n r25e4UwpExVO9fIoUSmzgWVfRHOTuj9yiG/UsaH2+2BRXerIX0Q1tyElwmcGh25M Ad2hN+yDnuIbNA5gNUpnzY32Dp0zjAsquc//QOvq9mltcNTElokB8idGliismvyd 8qF0lkwQwewOBT/sSD5EY3K0Qd8IJu425bvT/yPUDScHz1chxHUoxo5eisIr2M9l 5AL5KHAf7Zzs8ZuV+IYPzZ5qM6a/vF3mHUisKRNKYVhF46Nmd4cBratfXwWb1MxV clQM2qr0TLOYli9mOeTXph3hg/rBVqKqf90boAZoN8b2tWBKlMykpqRadbepjrgx bmBSwwAF99NxIHEjU3U5DMdUloCSiMZIfMfDxQrPNDrfWAW4xJs5Ym0VeOjEotTt oFEs1fr6c3Mn7KEuPPfOtnDxvs51IP/B8+gDgMt/edf+wHiCU1Zm31u2gxt2dsKh g73Y92i5SHjIf36H5szBTeioyMy1E1VA9HF14xWz2eKdQ+wxQ9VNWoctcJ85k3F4 6AZDYRIrWA== =EaE9 -----END PGP SIGNATURE----- Merge tag 'iter-ubuf.2-2023-04-21' of git://git.kernel.dk/linux Pull ITER_UBUF updates from Jens Axboe: "This turns singe vector imports into ITER_UBUF, rather than ITER_IOVEC. The former is more trivial to iterate and advance, and hence a bit more efficient. From some very unscientific testing, ~60% of all iovec imports are single vector" * tag 'iter-ubuf.2-2023-04-21' of git://git.kernel.dk/linux: iov_iter: Mark copy_compat_iovec_from_user() noinline iov_iter: import single vector iovecs as ITER_UBUF iov_iter: convert import_single_range() to ITER_UBUF iov_iter: overlay struct iovec and ubuf/len iov_iter: set nr_segs = 1 for ITER_UBUF iov_iter: remove iov_iter_iovec() iov_iter: add iter_iov_addr() and iter_iov_len() helpers ALSA: pcm: check for user backed iterator, not specific iterator type IB/qib: check for user backed iterator, not specific iterator type IB/hfi1: check for user backed iterator, not specific iterator type iov_iter: add iter_iovec() helper block: ensure bio_alloc_map_data() deals with ITER_UBUF correctly |
||
|
Peng Zhang
|
29ad6bb313 |
maple_tree: fix allocation in mas_sparse_area()
In the case of reverse allocation, mas->index and mas->last do not point
to the correct allocation range, which will cause users to get incorrect
allocation results, so fix it. If the user does not use it in a specific
way, this bug will not be triggered.
This is a bug, but only VMA uses it now, the way VMA is used now will
not trigger it. There is a possibility that a user will trigger it in
the future.
Also re-check whether the size is still satisfied after the lower bound
was increased, which is a corner case and is incorrect in previous
versions.
Link: https://lkml.kernel.org/r/20230419093625.99201-1-zhangpeng.00@bytedance.com
Fixes:
|
||
|
Yajun Deng
|
13215e8a4b |
lib/show_mem.c: use for_each_populated_zone() simplify code
__show_mem() needs to iterate over all zones that have memory, we can simplify the code by using for_each_populated_zone(). Link: https://lkml.kernel.org/r/20230417035226.4013584-1-yajun.deng@linux.dev Signed-off-by: Yajun Deng <yajun.deng@linux.dev> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Xie Yongji
|
aaf0594829 |
lib/group_cpus: Export group_cpus_evenly()
Export group_cpus_evenly() so that some modules can make use of it to group CPUs evenly according to NUMA and CPU locality. Signed-off-by: Xie Yongji <xieyongji@bytedance.com> Acked-by: Jason Wang <jasowang@redhat.com> Message-Id: <20230323053043.35-2-xieyongji@bytedance.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> |
||
|
Jakub Kicinski
|
681c5b51dc |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Adjacent changes: net/mptcp/protocol.h |
||
|
Noah Goldstein
|
b0687c1119 |
lib/rbtree: use '+' instead of '|' for setting color.
This has a slight benefit for x86 and has no effect on other targets.
The benefit to x86 is it change the codegen for setting a node to block
from `mov %r0, %r1; or $RB_BLACK, %r1` to `lea RB_BLACK(%r0), %r1` which
saves an instructions.
In all other cases it just replace ALU with ALU (or -> and) which
perform the same on all machines I am aware of.
Total instructions in rbtree.o:
Before - 802
After - 782
so it saves about 20 `mov` instructions.
Link: https://lkml.kernel.org/r/20230404221350.3806566-1-goldstein.w.n@gmail.com
Signed-off-by: Noah Goldstein <goldstein.w.n@gmail.com>
Cc: Michel Lespinasse <michel@lespinasse.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Peng Zhang
|
fb20e99a74 |
maple_tree: use correct variable type in sizeof
The type of variable pointed to by pivs is unsigned long, but the type
used in sizeof is a pointer type. Change it to unsigned long.
This change has no runtime effect, as sizeof(ul) == sizeof(ul *).
Link: https://lkml.kernel.org/r/20230411023513.15227-1-zhangpeng.00@bytedance.com
Fixes:
|
||
|
Peng Zhang
|
97f7e09481 |
maple_tree: simplify mas_wr_node_walk()
Simplify code of mas_wr_node_walk() without changing functionality, and improve readability. Remove some special judgments. Instead of dynamically recording the min and max in the loop, get the final min and max directly at the end. Link: https://lkml.kernel.org/r/20230314124203.91572-3-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Uladzislau Rezki (Sony)
|
869cb29a61 |
lib/test_vmalloc.c: add vm_map_ram()/vm_unmap_ram() test case
Add vm_map_ram()/vm_unmap_ram() test case to our stress test-suite. [akpm@linux-foundation.org: fix whitespace, per Lorenzo] Link: https://lkml.kernel.org/r/20230330190639.431589-2-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Reviewed-by: Lorenzo Stoakes <lstoakes@gmail.com> Reviewed-by: Baoquan He <bhe@redhat.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Dave Chinner <david@fromorbit.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sony.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Andrew Morton
|
f8f238ffe5 | sync mm-stable with mm-hotfixes-stable to pick up depended-upon upstream changes | ||
|
Liam R. Howlett
|
06e8fd9993 |
maple_tree: fix mas_empty_area() search
The internal function of mas_awalk() was incorrectly skipping the last
entry in a node, which could potentially be NULL. This is only a problem
for the left-most node in the tree - otherwise that NULL would not exist.
Fix mas_awalk() by using the metadata to obtain the end of the node for
the loop and the logical pivot as apposed to the raw pivot value.
Link: https://lkml.kernel.org/r/20230414145728.4067069-2-Liam.Howlett@oracle.com
Fixes:
|
||
|
Liam R. Howlett
|
fad8e4291d |
maple_tree: make maple state reusable after mas_empty_area_rev()
Stop using maple state min/max for the range by passing through pointers
for those values. This will allow the maple state to be reused without
resetting.
Also add some logic to fail out early on searching with invalid
arguments.
Link: https://lkml.kernel.org/r/20230414145728.4067069-1-Liam.Howlett@oracle.com
Fixes:
|
||
|
Christoph Hellwig
|
7533583e12 |
libcrc32c: remove crc32c_impl
This was only ever used by btrfs, and the usage just went away.
This effectively reverts
|
||
|
Andrew Morton
|
e492cd61b9 | sync mm-stable with mm-hotfixes-stable to pick up depended-upon upstream changes | ||
|
Akinobu Mita
|
d325c16263 |
fault-inject: fix build error when FAULT_INJECTION_CONFIGFS=y and CONFIGFS_FS=m
This fixes a build error when CONFIG_FAULT_INJECTION_CONFIGFS=y and
CONFIG_CONFIGFS_FS=m.
Since the fault-injection library cannot built as a module, avoid building
configfs as a module.
Fixes:
|
||
|
Peng Zhang
|
1f5f12ece7 |
maple_tree: fix a potential memory leak, OOB access, or other unpredictable bug
In mas_alloc_nodes(), "node->node_count = 0" means to initialize the
node_count field of the new node, but the node may not be a new node. It
may be a node that existed before and node_count has a value, setting it
to 0 will cause a memory leak. At this time, mas->alloc->total will be
greater than the actual number of nodes in the linked list, which may
cause many other errors. For example, out-of-bounds access in
mas_pop_node(), and mas_pop_node() may return addresses that should not be
used. Fix it by initializing node_count only for new nodes.
Also, by the way, an if-else statement was removed to simplify the code.
Link: https://lkml.kernel.org/r/20230411041005.26205-1-zhangpeng.00@bytedance.com
Fixes:
|
||
|
Thomas Gleixner
|
63a759694e |
debugobject: Prevent init race with static objects
Statically initialized objects are usually not initialized via the init()
function of the subsystem. They are special cased and the subsystem
provides a function to validate whether an object which is not yet tracked
by debugobjects is statically initialized. This means the object is started
to be tracked on first use, e.g. activation.
This works perfectly fine, unless there are two concurrent operations on
that object. Schspa decoded the problem:
T0 T1
debug_object_assert_init(addr)
lock_hash_bucket()
obj = lookup_object(addr);
if (!obj) {
unlock_hash_bucket();
- > preemption
lock_subsytem_object(addr);
activate_object(addr)
lock_hash_bucket();
obj = lookup_object(addr);
if (!obj) {
unlock_hash_bucket();
if (is_static_object(addr))
init_and_track(addr);
lock_hash_bucket();
obj = lookup_object(addr);
obj->state = ACTIVATED;
unlock_hash_bucket();
subsys function modifies content of addr,
so static object detection does
not longer work.
unlock_subsytem_object(addr);
if (is_static_object(addr)) <- Fails
debugobject emits a warning and invokes the fixup function which
reinitializes the already active object in the worst case.
This race exists forever, but was never observed until mod_timer() got a
debug_object_assert_init() added which is outside of the timer base lock
held section right at the beginning of the function to cover the lockless
early exit points too.
Rework the code so that the lookup, the static object check and the
tracking object association happens atomically under the hash bucket
lock. This prevents the issue completely as all callers are serialized on
the hash bucket lock and therefore cannot observe inconsistent state.
Fixes:
|
||
|
Jakub Kicinski
|
800e68c44f |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Conflicts: tools/testing/selftests/net/config |
||
|
Nick Alcock
|
7f82b39dc3 |
treewide: remove MODULE_LICENSE in non-modules
Since commit
|
||
|
Nick Alcock
|
0c9bf64c5b |
btree: remove MODULE_LICENSE in non-modules
Since commit
|
||
|
Nick Alcock
|
5e0266f0e5 |
lib: remove MODULE_LICENSE in non-modules
Since commit
|
||
|
Nick Alcock
|
ef5bbd1172 |
crypto: blake2s: remove module-related code
Now blake2s-generic.c can no longer be a module, drop all remaining module-related code as well. Signed-off-by: Nick Alcock <nick.alcock@oracle.com> Requested-by: Herbert Xu <herbert@gondor.apana.org.au> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: linux-modules@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Hitomi Hasegawa <hasegawa-hitomi@fujitsu.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-crypto@vger.kernel.org Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> |
||
|
Nick Alcock
|
3714878005 |
crypto: remove MODULE_LICENSE in non-modules
Since commit
|
||
|
Akinobu Mita
|
4668c7a294 |
fault-inject: allow configuration via configfs
This provides a helper function to allow configuration of fault-injection for configfs-based drivers. The config items created by this function have the same interface as the one created under debugfs by fault_create_debugfs_attr(). Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Link: https://lore.kernel.org/r/20230327143733.14599-2-akinobu.mita@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Josh Poimboeuf
|
50f9a76ef1 |
iov_iter: Mark copy_compat_iovec_from_user() noinline
After commit 6376ce56feb6 ("iov_iter: import single vector iovecs as
ITER_UBUF"), GCC does an inter-procedural compiler optimization which
moves the user_access_begin() out of copy_compat_iovec_from_user() and
into its callers:
lib/iov_iter.o: warning: objtool: .altinstr_replacement+0x0: redundant UACCESS disable
lib/iov_iter.o: warning: objtool: iovec_from_user.part.0+0xc7: call to copy_compat_iovec_from_user.part.0() with UACCESS enabled
lib/iov_iter.o: warning: objtool: __import_iovec+0x21d: call to copy_compat_iovec_from_user.part.0() with UACCESS enabled
Enforce the "no UACCESS enable across function boundaries" rule by
disabling cloning for copy_compat_iovec_from_user().
Fixes: 6376ce56feb6 ("iov_iter: import single vector iovecs as ITER_UBUF")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
https://lkml.kernel.org/lkml/20230327120017.6bb826d7@canb.auug.org.au
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Tested-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
||
|
Andy Shevchenko
|
ef55ef3e64 |
lib/test-string_helpers: replace UNESCAPE_ANY by UNESCAPE_ALL_MASK
When we get a random number to generate a flag in the valid range of UNESCAPE flags, use UNESCAPE_ALL_MASK, It's more correct and prevents from missed updates of the test coverage in the future if any. Link: https://lkml.kernel.org/r/20230327142604.48213-1-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Alexey Dobriyan
|
70e79866ab |
ELF: fix all "Elf" typos
ELF is acronym and therefore should be spelled in all caps. I left one exception at Documentation/arm/nwfpe/nwfpe.rst which looks like being written in the first person. Link: https://lkml.kernel.org/r/Y/3wGWQviIOkyLJW@p183 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Lorenzo Stoakes
|
4f80818b4a |
iov_iter: add copy_page_to_iter_nofault()
Provide a means to copy a page to user space from an iterator, aborting if a page fault would occur. This supports compound pages, but may be passed a tail page with an offset extending further into the compound page, so we cannot pass a folio. This allows for this function to be called from atomic context and _try_ to user pages if they are faulted in, aborting if not. The function does not use _copy_to_iter() in order to not specify might_fault(), this is similar to copy_page_from_iter_atomic(). This is being added in order that an iteratable form of vread() can be implemented while holding spinlocks. Link: https://lkml.kernel.org/r/19734729defb0f498a76bdec1bef3ac48a3af3e8.1679511146.git.lstoakes@gmail.com Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com> Reviewed-by: Baoquan He <bhe@redhat.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: David Hildenbrand <david@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Liu Shixin <liushixin2@huawei.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Peng Zhang
|
c45ea315a6 |
maple_tree: fix a potential concurrency bug in RCU mode
There is a concurrency bug that may cause the wrong value to be loaded
when a CPU is modifying the maple tree.
CPU1:
mtree_insert_range()
mas_insert()
mas_store_root()
...
mas_root_expand()
...
rcu_assign_pointer(mas->tree->ma_root, mte_mk_root(mas->node));
ma_set_meta(node, maple_leaf_64, 0, slot); <---IP
CPU2:
mtree_load()
mtree_lookup_walk()
ma_data_end();
When CPU1 is about to execute the instruction pointed to by IP, the
ma_data_end() executed by CPU2 may return the wrong end position, which
will cause the value loaded by mtree_load() to be wrong.
An example of triggering the bug:
Add mdelay(100) between rcu_assign_pointer() and ma_set_meta() in
mas_root_expand().
static DEFINE_MTREE(tree);
int work(void *p) {
unsigned long val;
for (int i = 0 ; i< 30; ++i) {
val = (unsigned long)mtree_load(&tree, 8);
mdelay(5);
pr_info("%lu",val);
}
return 0;
}
mt_init_flags(&tree, MT_FLAGS_USE_RCU);
mtree_insert(&tree, 0, (void*)12345, GFP_KERNEL);
run_thread(work)
mtree_insert(&tree, 1, (void*)56789, GFP_KERNEL);
In RCU mode, mtree_load() should always return the value before or after
the data structure is modified, and in this example mtree_load(&tree, 8)
may return 56789 which is not expected, it should always return NULL. Fix
it by put ma_set_meta() before rcu_assign_pointer().
Link: https://lkml.kernel.org/r/20230314124203.91572-4-zhangpeng.00@bytedance.com
Fixes:
|
||
|
Peng Zhang
|
ec07967d75 |
maple_tree: fix get wrong data_end in mtree_lookup_walk()
if (likely(offset > end))
max = pivots[offset];
The above code should be changed to if (likely(offset < end)), which is
correct. This affects the correctness of ma_data_end(). Now it seems
that the final result will not be wrong, but it is best to change it.
This patch does not change the code as above, because it simplifies the
code by the way.
Link: https://lkml.kernel.org/r/20230314124203.91572-1-zhangpeng.00@bytedance.com
Link: https://lkml.kernel.org/r/20230314124203.91572-2-zhangpeng.00@bytedance.com
Fixes:
|
||
|
Liam R. Howlett
|
790e1fa86b |
maple_tree: add RCU lock checking to rcu callback functions
Dereferencing RCU objects within the RCU callback without the RCU check
has caused lockdep to complain. Fix the RCU dereferencing by using the
RCU callback lock to ensure the operation is safe.
Also stop creating a new lock to use for dereferencing during destruction
of the tree or subtree. Instead, pass through a pointer to the tree that
has the lock that is held for RCU dereferencing checking. It also does
not make sense to use the maple state in the freeing scenario as the tree
walk is a special case where the tree no longer has the normal encodings
and parent pointers.
Link: https://lkml.kernel.org/r/20230227173632.3292573-8-surenb@google.com
Fixes:
|
||
|
Liam R. Howlett
|
0a2b18d948 |
maple_tree: add smp_rmb() to dead node detection
Add an smp_rmb() before reading the parent pointer to ensure that anything
read from the node prior to the parent pointer hasn't been reordered ahead
of this check.
The is necessary for RCU mode.
Link: https://lkml.kernel.org/r/20230227173632.3292573-7-surenb@google.com
Fixes:
|
||
|
Liam R. Howlett
|
c13af03de4 |
maple_tree: fix write memory barrier of nodes once dead for RCU mode
During the development of the maple tree, the strategy of freeing multiple
nodes changed and, in the process, the pivots were reused to store
pointers to dead nodes. To ensure the readers see accurate pivots, the
writers need to mark the nodes as dead and call smp_wmb() to ensure any
readers can identify the node as dead before using the pivot values.
There were two places where the old method of marking the node as dead
without smp_wmb() were being used, which resulted in RCU readers seeing
the wrong pivot value before seeing the node was dead. Fix this race
condition by using mte_set_node_dead() which has the smp_wmb() call to
ensure the race is closed.
Add a WARN_ON() to the ma_free_rcu() call to ensure all nodes being freed
are marked as dead to ensure there are no other call paths besides the two
updated paths.
This is necessary for the RCU mode of the maple tree.
Link: https://lkml.kernel.org/r/20230227173632.3292573-6-surenb@google.com
Fixes:
|
||
|
Liam Howlett
|
8372f4d83f |
maple_tree: remove extra smp_wmb() from mas_dead_leaves()
The call to mte_set_dead_node() before the smp_wmb() already calls
smp_wmb() so this is not needed. This is an optimization for the RCU mode
of the maple tree.
Link: https://lkml.kernel.org/r/20230227173632.3292573-5-surenb@google.com
Fixes:
|
||
|
Liam Howlett
|
2e5b4921f8 |
maple_tree: fix freeing of nodes in rcu mode
The walk to destroy the nodes was not always setting the node type and
would result in a destroy method potentially using the values as nodes.
Avoid this by setting the correct node types. This is necessary for the
RCU mode of the maple tree.
Link: https://lkml.kernel.org/r/20230227173632.3292573-4-surenb@google.com
Fixes:
|
||
|
Liam Howlett
|
a7b92d59c8 |
maple_tree: detect dead nodes in mas_start()
When initially starting a search, the root node may already be in the
process of being replaced in RCU mode. Detect and restart the walk if
this is the case. This is necessary for RCU mode of the maple tree.
Link: https://lkml.kernel.org/r/20230227173632.3292573-3-surenb@google.com
Fixes:
|
||
|
Liam Howlett
|
39d0bd86c4 |
maple_tree: be more cautious about dead nodes
Patch series "Fix VMA tree modification under mmap read lock".
Syzbot reported a BUG_ON in mm/mmap.c which was found to be caused by an
inconsistency between threads walking the VMA maple tree. The
inconsistency is caused by the page fault handler modifying the maple tree
while holding the mmap_lock for read.
This only happens for stack VMAs. We had thought this was safe as it only
modifies a single pivot in the tree. Unfortunately, syzbot constructed a
test case where the stack had no guard page and grew the stack to abut the
next VMA. This causes us to delete the NULL entry between the two VMAs
and rewrite the node.
We considered several options for fixing this, including dropping the
mmap_lock, then reacquiring it for write; and relaxing the definition of
the tree to permit a zero-length NULL entry in the node. We decided the
best option was to backport some of the RCU patches from -next, which
solve the problem by allocating a new node and RCU-freeing the old node.
Since the problem exists in 6.1, we preferred a solution which is similar
to the one we intended to merge next merge window.
These patches have been in -next since next-20230301, and have received
intensive testing in Android as part of the RCU page fault patchset. They
were also sent as part of the "Per-VMA locks" v4 patch series. Patches 1
to 7 are bug fixes for RCU mode of the tree and patch 8 enables RCU mode
for the tree.
Performance v6.3-rc3 vs patched v6.3-rc3: Running these changes through
mmtests showed there was a 15-20% performance decrease in
will-it-scale/brk1-processes. This tests creating and inserting a single
VMA repeatedly through the brk interface and isn't representative of any
real world applications.
This patch (of 8):
ma_pivots() and ma_data_end() may be called with a dead node. Ensure to
that the node isn't dead before using the returned values.
This is necessary for RCU mode of the maple tree.
Link: https://lkml.kernel.org/r/20230327185532.2354250-1-Liam.Howlett@oracle.com
Link: https://lkml.kernel.org/r/20230227173632.3292573-1-surenb@google.com
Link: https://lkml.kernel.org/r/20230227173632.3292573-2-surenb@google.com
Fixes:
|
||
|
Niklas Schnelle
|
fcbfe8121a
|
Kconfig: introduce HAS_IOPORT option and select it as necessary
We introduce a new HAS_IOPORT Kconfig option to indicate support for I/O Port access. In a future patch HAS_IOPORT=n will disable compilation of the I/O accessor functions inb()/outb() and friends on architectures which can not meaningfully support legacy I/O spaces such as s390. The following architectures do not select HAS_IOPORT: * ARC * C-SKY * Hexagon * Nios II * OpenRISC * s390 * User-Mode Linux * Xtensa All other architectures select HAS_IOPORT at least conditionally. The "depends on" relations on HAS_IOPORT in drivers as well as ifdefs for HAS_IOPORT specific sections will be added in subsequent patches on a per subsystem basis. Co-developed-by: Arnd Bergmann <arnd@kernel.org> Signed-off-by: Arnd Bergmann <arnd@kernel.org> Acked-by: Johannes Berg <johannes@sipsolutions.net> # for ARCH=um Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
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|
Rae Moar
|
a42077b787 |
kunit: add tests for using current KUnit test field
Create test suite called "kunit_current" to add test coverage for the use of current->kunit_test, which returns the current KUnit test. Add two test cases: - kunit_current_test to test current->kunit_test and the method kunit_get_current_test(), which utilizes current->kunit_test. - kunit_current_fail_test to test the method kunit_fail_current_test(), which utilizes current->kunit_test. Signed-off-by: Rae Moar <rmoar@google.com> Reviewed-by: Daniel Latypov <dlatypov@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Uladzislau Rezki (Sony)
|
c779b97281 |
lib/test_vmalloc.c: Rename kvfree_rcu() to kvfree_rcu_mightsleep()
The kvfree_rcu() macro's single-argument form is deprecated. Therefore switch to the new kvfree_rcu_mightsleep() variant. The goal is to avoid accidental use of the single-argument forms, which can introduce functionality bugs in atomic contexts and latency bugs in non-atomic contexts. Acked-by: Joel Fernandes (Google) <joel@joelfernandes.org> Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org> |
||
|
Andy Shevchenko
|
48e1a66fec |
lib/vsprintf: Use isodigit() for the octal number check
Use isodigit() to test the octal number instead of homegrown approach. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20230327142721.48378-1-andriy.shevchenko@linux.intel.com |
||
|
Greg Kroah-Hartman
|
cd8fe5b6db |
Merge 6.3-rc5 into driver-core-next
We need the fixes in here for testing, as well as the driver core changes for documentation updates to build on. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Sadiya Kazi
|
57b4f760f9 |
list: test: Test the klist structure
Add KUnit tests to the klist linked-list structure. These perform testing for different variations of node add and node delete in the klist data structure (<linux/klist.h>). Limitation: Since we use a static global variable, and if multiple instances of this test are run concurrently, the test may fail. Signed-off-by: Sadiya Kazi <sadiyakazi@google.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Herbert Xu
|
c616fb0cba |
crypto: lib/utils - Move utilities into new header
The utilities have historically resided in algapi.h as they were first used internally before being exported. Move them into a new header file so external users don't see internal API details. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Jakub Kicinski
|
79548b7984 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Conflicts: drivers/net/ethernet/mediatek/mtk_ppe.c |
||
|
Jens Axboe
|
3b2deb0e46 |
iov_iter: import single vector iovecs as ITER_UBUF
Add a special case to __import_iovec(), which imports a single segment iovec as an ITER_UBUF rather than an ITER_IOVEC. ITER_UBUF is cheaper to iterate than ITER_IOVEC, and for a single segment iovec, there's no point in using a segmented iterator. Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Jens Axboe
|
e03ad4ee27 |
iov_iter: convert import_single_range() to ITER_UBUF
Since we're just importing a single vector, we don't have to turn it into an ITER_IOVEC. Instead turn it into an ITER_UBUF, which is cheaper to iterate. Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Jens Axboe
|
de4f5fed3f |
iov_iter: add iter_iovec() helper
This returns a pointer to the current iovec entry in the iterator. Only useful with ITER_IOVEC right now, but it prepares us to treat ITER_UBUF and ITER_IOVEC identically for the first segment. Rename struct iov_iter->iov to iov_iter->__iov to find any potentially troublesome spots, and also to prevent anyone from adding new code that accesses iter->iov directly. Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Jakub Kicinski
|
de7494524d |
mlx5-updates-2023-03-20
mlx5 dynamic msix This patch series adds support for dynamic msix vectors allocation in mlx5. Eli Cohen Says: ================ The following series of patches modifies mlx5_core to work with the dynamic MSIX API. Currently, mlx5_core allocates all the interrupt vectors it needs and distributes them amongst the consumers. With the introduction of dynamic MSIX support, which allows for allocation of interrupts more than once, we now allocate vectors as we need them. This allows other drivers running on top of mlx5_core to allocate interrupt vectors for their own use. An example for this is mlx5_vdpa, which uses these vectors to propagate interrupts directly from the hardware to the vCPU [1]. As a preparation for using this series, a use after free issue is fixed in lib/cpu_rmap.c and the allocator for rmap entries has been modified. A complementary API for irq_cpu_rmap_add() has also been introduced. [1] https://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux.git/patch/?id=0f2bf1fcae96a83b8c5581854713c9fc3407556e ================ -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEGhZs6bAKwk/OTgTpSD+KveBX+j4FAmQeTIUACgkQSD+KveBX +j7oCQgAx9yNHM4BZD2UfIx/P+W13v1B+xOds04Vezl9JlakoqvviPxm3vvuKkl+ j/8DdyoqMUbWV0j5XxgZ+GG91bc14jN1GQ+4fUf63SzA99vAGb9GJPV2aQt5roGh JmMqI2utDfoz+29qtQ+kVchY5AN5AoPXSQH2zkEZmJaPUjYb9Dr/4IayL0JaViAw S31QLHKkSJ8bL8Wc6Op1emNVV7eXs18f7IIjVs3sYOb3WJRPVpmdKneRqLgVYplf Td40Gwobl1elpjEqSSRTJI5YUSR8gcAJlBqIwHeJzFFpO3Pnciopl761osNKKs/a 5ctES5DS6JHqqFGbWV1gKYcRMil3LA== =9i8l -----END PGP SIGNATURE----- Merge tag 'mlx5-updates-2023-03-20' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux Saeed Mahameed says: ==================== mlx5-updates-2023-03-20 mlx5 dynamic msix This patch series adds support for dynamic msix vectors allocation in mlx5. Eli Cohen Says: ================ The following series of patches modifies mlx5_core to work with the dynamic MSIX API. Currently, mlx5_core allocates all the interrupt vectors it needs and distributes them amongst the consumers. With the introduction of dynamic MSIX support, which allows for allocation of interrupts more than once, we now allocate vectors as we need them. This allows other drivers running on top of mlx5_core to allocate interrupt vectors for their own use. An example for this is mlx5_vdpa, which uses these vectors to propagate interrupts directly from the hardware to the vCPU [1]. As a preparation for using this series, a use after free issue is fixed in lib/cpu_rmap.c and the allocator for rmap entries has been modified. A complementary API for irq_cpu_rmap_add() has also been introduced. [1] https://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux.git/patch/?id=0f2bf1fcae96a83b8c5581854713c9fc3407556e ================ * tag 'mlx5-updates-2023-03-20' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux: net/mlx5: Provide external API for allocating vectors net/mlx5: Use one completion vector if eth is disabled net/mlx5: Refactor calculation of required completion vectors net/mlx5: Move devlink registration before mlx5_load net/mlx5: Use dynamic msix vectors allocation net/mlx5: Refactor completion irq request/release code net/mlx5: Improve naming of pci function vectors net/mlx5: Use newer affinity descriptor net/mlx5: Modify struct mlx5_irq to use struct msi_map net/mlx5: Fix wrong comment net/mlx5e: Coding style fix, add empty line lib: cpu_rmap: Add irq_cpu_rmap_remove to complement irq_cpu_rmap_add lib: cpu_rmap: Use allocator for rmap entries lib: cpu_rmap: Avoid use after free on rmap->obj array entries ==================== Link: https://lore.kernel.org/r/20230324231341.29808-1-saeed@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jakub Kicinski
|
b133fffe57 |
Merge branch 'locking/rcuref' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pulling rcurefs from Peter for tglx's work. Link: https://lore.kernel.org/all/20230328084534.GE4253@hirez.programming.kicks-ass.net/ Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Danilo Krummrich
|
5c63a7c32a |
maple_tree: export symbol mas_preallocate()
Fix missing EXPORT_SYMBOL_GPL() statement for mas_preallocate(). It isn't actually used by anything yet, but mas_preallocate() is part of the maple tree's 'Advanced API'. All other functions of this API are exported already. Link: https://lkml.kernel.org/r/20230302011035.4928-1-dakr@redhat.com Signed-off-by: Danilo Krummrich <dakr@redhat.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Alexander Potapenko
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8e00b2dffd |
lib/stackdepot: kmsan: mark API outputs as initialized
KMSAN does not instrument stackdepot and may treat memory allocated by it as uninitialized. This is not a problem for KMSAN itself, because its functions calling stackdepot API are also not instrumented. But other kernel features (e.g. netdev tracker) may access stack depot from instrumented code, which will lead to false positives, unless we explicitly mark stackdepot outputs as initialized. Link: https://lkml.kernel.org/r/20230306111322.205724-1-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Reviewed-by: Dmitry Vyukov <dvyukov@google.com> Suggested-by: Dmitry Vyukov <dvyukov@google.com> Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com> Cc: Marco Elver <elver@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Hyeonggon Yoo
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4c85c0be3d |
mm, printk: introduce new format %pGt for page_type
%pGp format is used to display 'flags' field of a struct page. However, some page flags (i.e. PG_buddy, see page-flags.h for more details) are stored in page_type field. To display human-readable output of page_type, introduce %pGt format. It is important to note the meaning of bits are different in page_type. if page_type is 0xffffffff, no flags are set. Setting PG_buddy (0x00000080) flag results in a page_type of 0xffffff7f. Clearing a bit actually means setting a flag. Bits in page_type are inverted when displaying type names. Only values for which page_type_has_type() returns true are considered as page_type, to avoid confusion with mapcount values. if it returns false, only raw values are displayed and not page type names. Link: https://lkml.kernel.org/r/20230130042514.2418-3-42.hyeyoo@gmail.com Signed-off-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Reviewed-by: Petr Mladek <pmladek@suse.com> [vsprintf part] Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Joe Perches <joe@perches.com> Cc: John Ogness <john.ogness@linutronix.de> Cc: Matthew Wilcox <willy@infradead.org> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Nicholas Piggin
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2655421ae6 |
lazy tlb: shoot lazies, non-refcounting lazy tlb mm reference handling scheme
On big systems, the mm refcount can become highly contented when doing a lot of context switching with threaded applications. user<->idle switch is one of the important cases. Abandoning lazy tlb entirely slows this switching down quite a bit in the common uncontended case, so that is not viable. Implement a scheme where lazy tlb mm references do not contribute to the refcount, instead they get explicitly removed when the refcount reaches zero. The final mmdrop() sends IPIs to all CPUs in the mm_cpumask and they switch away from this mm to init_mm if it was being used as the lazy tlb mm. Enabling the shoot lazies option therefore requires that the arch ensures that mm_cpumask contains all CPUs that could possibly be using mm. A DEBUG_VM option IPIs every CPU in the system after this to ensure there are no references remaining before the mm is freed. Shootdown IPIs cost could be an issue, but they have not been observed to be a serious problem with this scheme, because short-lived processes tend not to migrate CPUs much, therefore they don't get much chance to leave lazy tlb mm references on remote CPUs. There are a lot of options to reduce them if necessary, described in comments. The near-worst-case can be benchmarked with will-it-scale: context_switch1_threads -t $(($(nproc) / 2)) This will create nproc threads (nproc / 2 switching pairs) all sharing the same mm that spread over all CPUs so each CPU does thread->idle->thread switching. [ Rik came up with basically the same idea a few years ago, so credit to him for that. ] Link: https://lore.kernel.org/linux-mm/20230118080011.2258375-1-npiggin@gmail.com/ Link: https://lore.kernel.org/all/20180728215357.3249-11-riel@surriel.com/ Link: https://lkml.kernel.org/r/20230203071837.1136453-5-npiggin@gmail.com Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andy Lutomirski <luto@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nadav Amit <nadav.amit@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Masami Hiramatsu (Google)
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87de2163a3 |
lib/test_fprobe: Add a testcase for skipping exit_handler
Add a testcase for skipping exit_handler if entry_handler returns !0. Link: https://lkml.kernel.org/r/167526700658.433354.12922388040490848613.stgit@mhiramat.roam.corp.google.com Cc: Florent Revest <revest@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Masami Hiramatsu (Google)
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39d954200b |
fprobe: Skip exit_handler if entry_handler returns !0
Skip hooking function return and calling exit_handler if the entry_handler() returns !0. Link: https://lkml.kernel.org/r/167526699798.433354.10998365726830117303.stgit@mhiramat.roam.corp.google.com Cc: Florent Revest <revest@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Masami Hiramatsu (Google)
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7e7ef1bfe5 |
lib/test_fprobe: Add a test case for nr_maxactive
Add a test case for nr_maxactive. If the number of active functions is more than nr_maxactive, it must be skipped. Link: https://lkml.kernel.org/r/167526698856.433354.4430007340787176666.stgit@mhiramat.roam.corp.google.com Cc: Florent Revest <revest@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Masami Hiramatsu (Google)
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34cabf8fd1 |
lib/test_fprobe: Add private entry_data testcases
Add test cases for checking whether private entry_data is correctly passed or not. Link: https://lkml.kernel.org/r/167526697074.433354.17790288501657876219.stgit@mhiramat.roam.corp.google.com Cc: Florent Revest <revest@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Masami Hiramatsu (Google)
|
76d0de5729 |
fprobe: Pass entry_data to handlers
Pass the private entry_data to the entry and exit handlers so that they can share the context data, something like saved function arguments etc. User must specify the private entry_data size by @entry_data_size field before registering the fprobe. Link: https://lkml.kernel.org/r/167526696173.433354.17408372048319432574.stgit@mhiramat.roam.corp.google.com Cc: Florent Revest <revest@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Tiezhu Yang
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f478b9987c |
lib/Kconfig.debug: correct help info of LOCKDEP_STACK_TRACE_HASH_BITS
We can see the following definition in kernel/locking/lockdep_internals.h:
#define STACK_TRACE_HASH_SIZE (1 << CONFIG_LOCKDEP_STACK_TRACE_HASH_BITS)
CONFIG_LOCKDEP_STACK_TRACE_HASH_BITS is related with STACK_TRACE_HASH_SIZE
instead of MAX_STACK_TRACE_ENTRIES, fix it.
Link: https://lkml.kernel.org/r/1679380508-20830-1-git-send-email-yangtiezhu@loongson.cn
Fixes:
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ye xingchen
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35260cf545 |
Kconfig.debug: fix SCHED_DEBUG dependency
The path for SCHED_DEBUG is /sys/kernel/debug/sched. So, SCHED_DEBUG should depend on DEBUG_FS, not PROC_FS. Link: https://lkml.kernel.org/r/202301291110098787982@zte.com.cn Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Kees Cook <keescook@chromium.org> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zhaoyang Huang <zhaoyang.huang@unisoc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Thomas Gleixner
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ee1ee6db07 |
atomics: Provide rcuref - scalable reference counting
atomic_t based reference counting, including refcount_t, uses
atomic_inc_not_zero() for acquiring a reference. atomic_inc_not_zero() is
implemented with a atomic_try_cmpxchg() loop. High contention of the
reference count leads to retry loops and scales badly. There is nothing to
improve on this implementation as the semantics have to be preserved.
Provide rcuref as a scalable alternative solution which is suitable for RCU
managed objects. Similar to refcount_t it comes with overflow and underflow
detection and mitigation.
rcuref treats the underlying atomic_t as an unsigned integer and partitions
this space into zones:
0x00000000 - 0x7FFFFFFF valid zone (1 .. (INT_MAX + 1) references)
0x80000000 - 0xBFFFFFFF saturation zone
0xC0000000 - 0xFFFFFFFE dead zone
0xFFFFFFFF no reference
rcuref_get() unconditionally increments the reference count with
atomic_add_negative_relaxed(). rcuref_put() unconditionally decrements the
reference count with atomic_add_negative_release().
This unconditional increment avoids the inc_not_zero() problem, but
requires a more complex implementation on the put() side when the count
drops from 0 to -1.
When this transition is detected then it is attempted to mark the reference
count dead, by setting it to the midpoint of the dead zone with a single
atomic_cmpxchg_release() operation. This operation can fail due to a
concurrent rcuref_get() elevating the reference count from -1 to 0 again.
If the unconditional increment in rcuref_get() hits a reference count which
is marked dead (or saturated) it will detect it after the fact and bring
back the reference count to the midpoint of the respective zone. The zones
provide enough tolerance which makes it practically impossible to escape
from a zone.
The racy implementation of rcuref_put() requires to protect rcuref_put()
against a grace period ending in order to prevent a subtle use after
free. As RCU is the only mechanism which allows to protect against that, it
is not possible to fully replace the atomic_inc_not_zero() based
implementation of refcount_t with this scheme.
The final drop is slightly more expensive than the atomic_dec_return()
counterpart, but that's not the case which this is optimized for. The
optimization is on the high frequeunt get()/put() pairs and their
scalability.
The performance of an uncontended rcuref_get()/put() pair where the put()
is not dropping the last reference is still on par with the plain atomic
operations, while at the same time providing overflow and underflow
detection and mitigation.
The performance of rcuref compared to plain atomic_inc_not_zero() and
atomic_dec_return() based reference counting under contention:
- Micro benchmark: All CPUs running a increment/decrement loop on an
elevated reference count, which means the 0 to -1 transition never
happens.
The performance gain depends on microarchitecture and the number of
CPUs and has been observed in the range of 1.3X to 4.7X
- Conversion of dst_entry::__refcnt to rcuref and testing with the
localhost memtier/memcached benchmark. That benchmark shows the
reference count contention prominently.
The performance gain depends on microarchitecture and the number of
CPUs and has been observed in the range of 1.1X to 2.6X over the
previous fix for the false sharing issue vs. struct
dst_entry::__refcnt.
When memtier is run over a real 1Gb network connection, there is a
small gain on top of the false sharing fix. The two changes combined
result in a 2%-5% total gain for that networked test.
Reported-by: Wangyang Guo <wangyang.guo@intel.com>
Reported-by: Arjan Van De Ven <arjan.van.de.ven@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230323102800.158429195@linutronix.de
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Linus Torvalds
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f768b35a23 |
Fixes for 6.3-rc3:
* Fix a race in the percpu counters summation code where the summation
failed to add in the values for any CPUs that were dying but not yet
dead. This fixes some minor discrepancies and incorrect assertions
when running generic/650.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Merge tag 'xfs-6.3-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs percpu counter fixes from Darrick Wong:
"We discovered a filesystem summary counter corruption problem that was
traced to cpu hot-remove racing with the call to percpu_counter_sum
that sets the free block count in the superblock when writing it to
disk. The root cause is that percpu_counter_sum doesn't cull from
dying cpus and hence misses those counter values if the cpu shutdown
hooks have not yet run to merge the values.
I'm hoping this is a fairly painless fix to the problem, since the
dying cpu mask should generally be empty. It's been in for-next for a
week without any complaints from the bots.
- Fix a race in the percpu counters summation code where the
summation failed to add in the values for any CPUs that were dying
but not yet dead. This fixes some minor discrepancies and incorrect
assertions when running generic/650"
* tag 'xfs-6.3-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
pcpcntr: remove percpu_counter_sum_all()
fork: remove use of percpu_counter_sum_all
pcpcntrs: fix dying cpu summation race
cpumask: introduce for_each_cpu_or
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Eli Cohen
|
71f0a24786 |
lib: cpu_rmap: Add irq_cpu_rmap_remove to complement irq_cpu_rmap_add
Add a function to complement irq_cpu_rmap_add(). It removes the irq from the reverse mapping by setting the notifier to NULL. The function calls irq_set_affinity_notifier() with NULL at the notify argument which then cancel any pending notifier work and decrement reference on the notifier. When ref count reaches zero, the glue pointer is kfree and the rmap entry is set to NULL serving both to avoid second attempt to release it and also making the rmap entry available for subsequent mapping. It should be noted the drivers usually creates the reverse mapping at initialization time and remove it at unload time so we do not expect failures in allocating rmap due to kref holding the glue entry. Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Eli Cohen <elic@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> |
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|
Eli Cohen
|
9821d8d462 |
lib: cpu_rmap: Use allocator for rmap entries
Use a proper allocator for rmap entries using a naive for loop. The allocator relies on whether an entry is NULL to be considered free. Remove the used field of rmap which is not needed. Also, avoid crashing the kernel if an entry is not available. Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Eli Cohen <elic@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> |
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Eli Cohen
|
4e0473f106 |
lib: cpu_rmap: Avoid use after free on rmap->obj array entries
When calling irq_set_affinity_notifier() with NULL at the notify argument, it will cause freeing of the glue pointer in the corresponding array entry but will leave the pointer in the array. A subsequent call to free_irq_cpu_rmap() will try to free this entry again leading to possible use after free. Fix that by setting NULL to the array entry and checking that we have non-zero at the array entry when iterating over the array in free_irq_cpu_rmap(). The current code does not suffer from this since there are no cases where irq_set_affinity_notifier(irq, NULL) (note the NULL passed for the notify arg) is called, followed by a call to free_irq_cpu_rmap() so we don't hit and issue. Subsequent patches in this series excersize this flow, hence the required fix. Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Eli Cohen <elic@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> |
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Paul E. McKenney
|
c521986016 |
locking/csd_lock: Add Kconfig option for csd_debug default
The csd_debug kernel parameter works well, but is inconvenient in cases where it is more closely associated with boot loaders or automation than with a particular kernel version or release. Thererfore, provide a new CSD_LOCK_WAIT_DEBUG_DEFAULT Kconfig option that defaults csd_debug to 1 when selected and 0 otherwise, with this latter being the default. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Juergen Gross <jgross@suse.com> Link: https://lore.kernel.org/r/20230321005516.50558-1-paulmck@kernel.org |
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Geert Uytterhoeven
|
13684e966d |
lib: dhry: fix unstable smp_processor_id(_) usage
When running the in-kernel Dhrystone benchmark with
CONFIG_DEBUG_PREEMPT=y:
BUG: using smp_processor_id() in preemptible [00000000] code: bash/938
Fix this by not using smp_processor_id() directly, but instead wrapping
the whole benchmark inside a get_cpu()/put_cpu() pair. This makes sure
the whole benchmark is run on the same CPU core, and the reported values
are consistent.
Link: https://lkml.kernel.org/r/b0d29932bb24ad82cea7f821e295c898e9657be0.1678890070.git.geert+renesas@glider.be
Fixes:
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