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10818 Commits
| Author | SHA1 | Message | Date | |
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Thomas Weißschuh
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7c0c01a216 |
vdso/datastore: Gate time data behind CONFIG_GENERIC_GETTIMEOFDAY
When the generic vDSO does not provide time functions, as for example on
riscv32, then the time data store is not necessary.
Avoid allocating these time data pages when not used.
Fixes:
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Linus Torvalds
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9acd5b8beb |
hardening fixes for v6.17-rc4
- ARM: stacktrace: include asm/sections.h in asm/stacktrace.h (Arnd Bergmann) - ubsan: Fix incorrect hand-side used in handle (Junhui Pei) - hardening: Require clang 20.1.0 for __counted_by (Nathan Chancellor) -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRSPkdeREjth1dHnSE2KwveOeQkuwUCaLOvqAAKCRA2KwveOeQk u1KAAP0VBugVq0bY12ZGl+UPCQo64Ry9ekssZaLNow73tEv4iAEA4VCdkgrN/p/T Nb8nYy7skfmbp6T43cm5lqldO6S7KAo= =xoX+ -----END PGP SIGNATURE----- Merge tag 'hardening-v6.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening fixes from Kees Cook: - ARM: stacktrace: include asm/sections.h in asm/stacktrace.h (Arnd Bergmann) - ubsan: Fix incorrect hand-side used in handle (Junhui Pei) - hardening: Require clang 20.1.0 for __counted_by (Nathan Chancellor) * tag 'hardening-v6.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: hardening: Require clang 20.1.0 for __counted_by ARM: stacktrace: include asm/sections.h in asm/stacktrace.h ubsan: Fix incorrect hand-side used in handle |
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Eric Biggers
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362f922860 |
lib/crypto: tests: Add KUnit tests for BLAKE2s
Add a KUnit test suite for BLAKE2s. Most of the core test logic is in the previously-added hash-test-template.h. This commit just adds the actual KUnit suite, commits the generated test vectors to the tree so that gen-hash-testvecs.py won't have to be run at build time, and adds a few BLAKE2s-specific test cases. This is the replacement for blake2s-selftest, which an earlier commit removed. Improvements over blake2s-selftest include integration with KUnit, more comprehensive test cases, and support for benchmarking. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250827151131.27733-13-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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39ee3970f2 |
lib/crypto: blake2s: Consolidate into single C translation unit
As was done with the other algorithms, reorganize the BLAKE2s code so
that the generic implementation and the arch-specific "glue" code is
consolidated into a single translation unit, so that the compiler will
inline the functions and automatically decide whether to include the
generic code in the resulting binary or not.
Similarly, also consolidate the build rules into
lib/crypto/{Makefile,Kconfig}. This removes the last uses of
lib/crypto/{arm,x86}/{Makefile,Kconfig}, so remove those too.
Don't keep the !KMSAN dependency. It was needed only for other
algorithms such as ChaCha that initialize memory from assembly code.
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250827151131.27733-12-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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Eric Biggers
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5d313a7625 |
lib/crypto: blake2s: Move generic code into blake2s.c
Move blake2s_compress_generic() from blake2s-generic.c to blake2s.c. For now it's still guarded by CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC, but this prepares for changing it to a 'static __maybe_unused' function and just using the compiler to automatically decide its inclusion. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250827151131.27733-11-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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56e48d4e13 |
lib/crypto: blake2s: Always enable arch-optimized BLAKE2s code
When support for a crypto algorithm is enabled, the arch-optimized
implementation of that algorithm should be enabled too. We've learned
this the hard way many times over the years: people regularly forget to
enable the arch-optimized implementations of the crypto algorithms,
resulting in significant performance being left on the table.
Currently, BLAKE2s support is always enabled ('obj-y'), since random.c
uses it. Therefore, the arch-optimized BLAKE2s code, which exists for
ARM and x86_64, should be always enabled too. Let's do that.
Note that the effect on kernel image size is very small and should not
be a concern. On ARM, enabling CRYPTO_BLAKE2S_ARM actually *shrinks*
the kernel size by about 1200 bytes, since the ARM-optimized
blake2s_compress() completely replaces the generic blake2s_compress().
On x86_64, enabling CRYPTO_BLAKE2S_X86 increases the kernel size by
about 1400 bytes, as the generic blake2s_compress() is still included as
a fallback; however, for context, that is only about a quarter the size
of the generic blake2s_compress(). The x86_64 optimized BLAKE2s code
uses much less icache at runtime than the generic code.
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250827151131.27733-10-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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Eric Biggers
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126f5d90f6 |
lib/crypto: blake2s: Remove obsolete self-test
Remove the original BLAKE2s self-test, since it will be superseded by blake2s_kunit. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250827151131.27733-9-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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453eda46b7 |
lib/crypto: x86/blake2s: Reduce size of BLAKE2S_SIGMA2
Save 480 bytes of .rodata by replacing the .long constants with .bytes, and using the vpmovzxbd instruction to expand them. Also update the code to do the loads before incrementing %rax rather than after. This avoids the need for the first load to use an offset. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250827151131.27733-8-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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13cecc526d |
lib/crypto: chacha: Consolidate into single module
Consolidate the ChaCha code into a single module (excluding chacha-block-generic.c which remains always built-in for random.c), similar to various other algorithms: - Each arch now provides a header file lib/crypto/$(SRCARCH)/chacha.h, replacing lib/crypto/$(SRCARCH)/chacha*.c. The header defines chacha_crypt_arch() and hchacha_block_arch(). It is included by lib/crypto/chacha.c, and thus the code gets built into the single libchacha module, with improved inlining in some cases. - Whether arch-optimized ChaCha is buildable is now controlled centrally by lib/crypto/Kconfig instead of by lib/crypto/$(SRCARCH)/Kconfig. The conditions for enabling it remain the same as before, and it remains enabled by default. - Any additional arch-specific translation units for the optimized ChaCha code, such as assembly files, are now compiled by lib/crypto/Makefile instead of lib/crypto/$(SRCARCH)/Makefile. This removes the last use for the Makefile and Kconfig files in the arm64, mips, powerpc, riscv, and s390 subdirectories of lib/crypto/. So also remove those files and the references to them. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250827151131.27733-7-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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1ae46b6eb5 |
lib/crypto: chacha: Rename libchacha.c to chacha.c
Rename libchacha.c to chacha.c to make the naming consistent with other algorithms and allow additional source files to be added to the libchacha module. This file currently contains chacha_crypt_generic(), but it will soon be updated to contain chacha_crypt(). Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250827151131.27733-6-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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20a1acb68d |
lib/crypto: chacha: Rename chacha.c to chacha-block-generic.c
Rename chacha.c to chacha-block-generic.c to free up the name chacha.c for the high-level API entry points (chacha_crypt() and hchacha_block()), similar to the other algorithms. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250827151131.27733-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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c4b846ff6e |
lib/crypto: chacha: Remove unused function chacha_is_arch_optimized()
chacha_is_arch_optimized() is no longer used, so remove it. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250827151131.27733-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Zhihang Shao
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bef9c75598 |
lib/crypto: riscv/poly1305: Import OpenSSL/CRYPTOGAMS implementation
This is a straight import of the OpenSSL/CRYPTOGAMS Poly1305 implementation for riscv authored by Andy Polyakov. The file 'poly1305-riscv.pl' is taken straight from https://github.com/dot-asm/cryptogams commit 5e3fba73576244708a752fa61a8e93e587f271bb. This patch was tested on SpacemiT X60, with 2~2.5x improvement over generic implementation. Signed-off-by: Chunyan Zhang <zhangchunyan@iscas.ac.cn> Signed-off-by: Zhihang Shao <zhihang.shao.iscas@gmail.com> [EB: ported to lib/crypto/riscv/] Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250829152513.92459-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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b646b782e5 |
lib/crypto: poly1305: Consolidate into single module
Consolidate the Poly1305 code into a single module, similar to various other algorithms (SHA-1, SHA-256, SHA-512, etc.): - Each arch now provides a header file lib/crypto/$(SRCARCH)/poly1305.h, replacing lib/crypto/$(SRCARCH)/poly1305*.c. The header defines poly1305_block_init(), poly1305_blocks(), poly1305_emit(), and optionally poly1305_mod_init_arch(). It is included by lib/crypto/poly1305.c, and thus the code gets built into the single libpoly1305 module, with improved inlining in some cases. - Whether arch-optimized Poly1305 is buildable is now controlled centrally by lib/crypto/Kconfig instead of by lib/crypto/$(SRCARCH)/Kconfig. The conditions for enabling it remain the same as before, and it remains enabled by default. (The PPC64 one remains unconditionally disabled due to 'depends on BROKEN'.) - Any additional arch-specific translation units for the optimized Poly1305 code, such as assembly files, are now compiled by lib/crypto/Makefile instead of lib/crypto/$(SRCARCH)/Makefile. A special consideration is needed because the Adiantum code uses the poly1305_core_*() functions directly. For now, just carry forward that approach. This means retaining the CRYPTO_LIB_POLY1305_GENERIC kconfig symbol, and keeping the poly1305_core_*() functions in separate translation units. So it's not quite as streamlined I've done with the other hash functions, but we still get a single libpoly1305 module. Note: to see the diff from the arm, arm64, and x86 .c files to the new .h files, view this commit with 'git show -M10'. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250829152513.92459-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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df220cc5e6 |
lib/crypto: poly1305: Remove unused function poly1305_is_arch_optimized()
poly1305_is_arch_optimized() is unused, so remove it. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250829152513.92459-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Nathan Chancellor
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5ff8c11775
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KMSAN: Remove tautological checks
Now that the minimum supported version of LLVM for building the kernel has been bumped to 15.0.0, two KMSAN checks can be cleaned up. CONFIG_HAVE_KMSAN_COMPILER will always be true when using clang so remove the cc-option test and use a simple check for CONFIG_CC_IS_CLANG. CONFIG_HAVE_KMSAN_PARAM_RETVAL will always be true so it can be removed outright. Acked-by: Marco Elver <elver@google.com> Reviewed-by: Kees Cook <kees@kernel.org> Link: https://lore.kernel.org/r/20250821-bump-min-llvm-ver-15-v2-12-635f3294e5f0@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> |
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Nathan Chancellor
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573ad421cc
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objtool: Drop noinstr hack for KCSAN_WEAK_MEMORY
Now that the minimum supported version of LLVM for building the kernel has been bumped to 15.0.0, __no_kcsan will always ensure that the thread sanitizer functions are not generated, so remove the check for tsan functions in is_profiling_func() and the always true depends and unnecessary select lines in KCSAN_WEAK_MEMORY. Acked-by: Marco Elver <elver@google.com> Acked-by: Peter Zijlstra (Intel) <peterz@infraded.org> Reviewed-by: Kees Cook <kees@kernel.org> Link: https://lore.kernel.org/r/20250821-bump-min-llvm-ver-15-v2-11-635f3294e5f0@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> |
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Nathan Chancellor
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a817de2009
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lib/Kconfig.debug: Drop CLANG_VERSION check from DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT
Now that the minimum supported version of LLVM for building the kernel has been bumped to 15.0.0, the CLANG_VERSION check for older than 14.0.0 is always false, so remove it. Reviewed-by: Kees Cook <kees@kernel.org> Link: https://lore.kernel.org/r/20250821-bump-min-llvm-ver-15-v2-10-635f3294e5f0@kernel.org Signed-off-by: Nathan Chancellor <nathan@kernel.org> |
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Eric Biggers
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5012bd2dc6 |
lib/crypto: Drop inline from all *_mod_init_arch() functions
Drop 'inline' from all the *_mod_init_arch() functions so that the compiler will warn about any bugs where they are unused due to not being wired up properly. (There are no such bugs currently, so this just establishes a more robust convention for the future. Of course, these functions also tend to get inlined anyway, regardless of the keyword.) Link: https://lore.kernel.org/r/20250816020457.432040-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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d6b6aac0cd |
lib/crypto: tests: Add KUnit tests for MD5 and HMAC-MD5
Add a KUnit test suite for the MD5 library functions, including the corresponding HMAC support. The core test logic is in the previously-added hash-test-template.h. This commit just adds the actual KUnit suite, and it adds the generated test vectors to the tree so that gen-hash-testvecs.py won't have to be run at build time. Link: https://lore.kernel.org/r/20250805222855.10362-8-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Marie Zhussupova
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f9687f351f |
kunit: Add example parameterized test with direct dynamic parameter array setup
Introduce example_params_test_with_init_dynamic_arr(). This new KUnit test demonstrates directly assigning a dynamic parameter array, using the kunit_register_params_array() macro, to a parameterized test context. It highlights the use of param_init() and param_exit() for initialization and exit of a parameterized test, and their registration to the test case with KUNIT_CASE_PARAM_WITH_INIT(). Link: https://lore.kernel.org/r/20250826091341.1427123-7-davidgow@google.com Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Marie Zhussupova <marievic@google.com> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Marie Zhussupova
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a03e3caa0e |
kunit: Add example parameterized test with shared resource management using the Resource API
Add example_params_test_with_init() to illustrate how to manage shared resources across a parameterized KUnit test. This example showcases the use of the new param_init() function and its registration to a test using the KUNIT_CASE_PARAM_WITH_INIT() macro. Additionally, the test demonstrates how to directly pass a parameter array to the parameterized test context via kunit_register_params_array() and leveraging the Resource API for shared resource management. Link: https://lore.kernel.org/r/20250826091341.1427123-6-davidgow@google.com Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Marie Zhussupova <marievic@google.com> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Marie Zhussupova
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b820b9077b |
kunit: Enable direct registration of parameter arrays to a KUnit test
KUnit parameterized tests currently support two primary methods f
or getting parameters:
1. Defining custom logic within a generate_params() function.
2. Using the KUNIT_ARRAY_PARAM() and KUNIT_ARRAY_PARAM_DESC()
macros with a pre-defined static array and passing
the created *_gen_params() to KUNIT_CASE_PARAM().
These methods present limitations when dealing with dynamically
generated parameter arrays, or in scenarios where populating parameters
sequentially via generate_params() is inefficient or overly complex.
This patch addresses these limitations by adding a new `params_array`
field to `struct kunit`, of the type `kunit_params`. The
`struct kunit_params` is designed to store the parameter array itself,
along with essential metadata including the parameter count, parameter
size, and a get_description() function for providing custom descriptions
for individual parameters.
The `params_array` field can be populated by calling the new
kunit_register_params_array() macro from within a param_init() function.
This will register the array as part of the parameterized test context.
The user will then need to pass kunit_array_gen_params() to the
KUNIT_CASE_PARAM_WITH_INIT() macro as the generator function, if not
providing their own. kunit_array_gen_params() is a KUnit helper that will
use the registered array to generate parameters.
The arrays passed to KUNIT_ARRAY_PARAM(,DESC) will also be registered to
the parameterized test context for consistency as well as for higher
availability of the parameter count that will be used for outputting a KTAP
test plan for a parameterized test.
This modification provides greater flexibility to the KUnit framework,
allowing testers to easily register and utilize both dynamic and static
parameter arrays.
Link: https://lore.kernel.org/r/20250826091341.1427123-5-davidgow@google.com
Reviewed-by: David Gow <davidgow@google.com>
Reviewed-by: Rae Moar <rmoar@google.com>
Signed-off-by: Marie Zhussupova <marievic@google.com>
[Only output the test plan if using kunit_array_gen_params --David]
Signed-off-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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Marie Zhussupova
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b9a214b5f6 |
kunit: Pass parameterized test context to generate_params()
To enable more complex parameterized testing scenarios, the generate_params() function needs additional context beyond just the previously generated parameter. This patch modifies the generate_params() function signature to include an extra `struct kunit *test` argument, giving test users access to the parameterized test context when generating parameters. The `struct kunit *test` argument was added as the first parameter to the function signature as it aligns with the convention of other KUnit functions that accept `struct kunit *test` first. This also mirrors the "this" or "self" reference found in object-oriented programming languages. This patch also modifies xe_pci_live_device_gen_param() in xe_pci.c and nthreads_gen_params() in kcsan_test.c to reflect this signature change. Link: https://lore.kernel.org/r/20250826091341.1427123-4-davidgow@google.com Reviewed-by: David Gow <davidgow@google.com> Reviewed-by: Rae Moar <rmoar@google.com> Acked-by: Marco Elver <elver@google.com> Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Marie Zhussupova <marievic@google.com> [Catch some additional gen_params signatures in drm/xe/tests --David] Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Marie Zhussupova
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241423580e |
kunit: Introduce param_init/exit for parameterized test context management
Add (*param_init) and (*param_exit) function pointers to `struct kunit_case`. Users will be able to set them via the new KUNIT_CASE_PARAM_WITH_INIT() macro. param_init/exit will be invoked by kunit_run_tests() once before and once after the parameterized test, respectively. They will receive the `struct kunit` that holds the parameterized test context; facilitating init and exit for shared state. This patch also sets param_init/exit to None in rust/kernel/kunit.rs. Link: https://lore.kernel.org/r/20250826091341.1427123-3-davidgow@google.com Reviewed-by: Rae Moar <rmoar@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Marie Zhussupova <marievic@google.com> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Marie Zhussupova
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4b59300ba4 |
kunit: Add parent kunit for parameterized test context
Currently, KUnit parameterized tests lack a mechanism to share resources across parameter runs because the same `struct kunit` instance is cleaned up and reused for each run. This patch introduces parameterized test context, enabling test users to share resources between parameter runs. It also allows setting up resources that need to be available for all parameter runs only once, which is helpful in cases where setup is expensive. To establish a parameterized test context, this patch adds a parent pointer field to `struct kunit`. This allows resources added to the parent `struct kunit` to be shared and accessible across all parameter runs. In kunit_run_tests(), the default `struct kunit` created is now designated to act as the parameterized test context whenever a test is parameterized. Subsequently, a new `struct kunit` is made for each parameter run, and its parent pointer is set to the `struct kunit` that holds the parameterized test context. Link: https://lore.kernel.org/r/20250826091341.1427123-2-davidgow@google.com Reviewed-by: David Gow <davidgow@google.com> Reviewed-by: Rae Moar <rmoar@google.com> Signed-off-by: Marie Zhussupova <marievic@google.com> Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Eric Biggers
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a1848f6e38 |
lib/crypto: sparc/md5: Migrate optimized code into library
Instead of exposing the sparc-optimized MD5 code via sparc-specific crypto_shash algorithms, instead just implement the md5_blocks() library function. This is much simpler, it makes the MD5 library functions be sparc-optimized, and it fixes the longstanding issue where the sparc-optimized MD5 code was disabled by default. MD5 still remains available through crypto_shash, but individual architectures no longer need to handle it. Note: to see the diff from arch/sparc/crypto/md5_glue.c to lib/crypto/sparc/md5.h, view this commit with 'git show -M10'. Link: https://lore.kernel.org/r/20250805222855.10362-6-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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09371e1349 |
lib/crypto: powerpc/md5: Migrate optimized code into library
Instead of exposing the powerpc-optimized MD5 code via powerpc-specific crypto_shash algorithms, instead just implement the md5_blocks() library function. This is much simpler, it makes the MD5 library functions be powerpc-optimized, and it fixes the longstanding issue where the powerpc-optimized MD5 code was disabled by default. MD5 still remains available through crypto_shash, but individual architectures no longer need to handle it. Link: https://lore.kernel.org/r/20250805222855.10362-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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c9e5ac0ab9 |
lib/crypto: mips/md5: Migrate optimized code into library
Instead of exposing the mips-optimized MD5 code via mips-specific crypto_shash algorithms, instead just implement the md5_blocks() library function. This is much simpler, it makes the MD5 library functions be mips-optimized, and it fixes the longstanding issue where the mips-optimized MD5 code was disabled by default. MD5 still remains available through crypto_shash, but individual architectures no longer need to handle it. Note: to see the diff from arch/mips/cavium-octeon/crypto/octeon-md5.c to lib/crypto/mips/md5.h, view this commit with 'git show -M10'. Link: https://lore.kernel.org/r/20250805222855.10362-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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e164461349 |
lib/crypto: md5: Add MD5 and HMAC-MD5 library functions
Add library functions for MD5, including HMAC support. The MD5 implementation is derived from crypto/md5.c. This closely mirrors the corresponding SHA-1 and SHA-2 changes. Like SHA-1 and SHA-2, support for architecture-optimized MD5 implementations is included. I originally proposed dropping those, but unfortunately there is an AF_ALG user of the PowerPC MD5 code (https://lore.kernel.org/r/c4191597-341d-4fd7-bc3d-13daf7666c41@csgroup.eu/), and dropping that code would be viewed as a performance regression. We don't add new software algorithm implementations purely for AF_ALG, as escalating to kernel mode merely to do calculations that could be done in userspace is inefficient and is completely the wrong design. But since this one already existed, it gets grandfathered in for now. An objection was also raised to dropping the SPARC64 MD5 code because it utilizes the CPU's direct support for MD5, although it remains unclear that anyone is using that. Regardless, we'll keep these around for now. Note that while MD5 is a legacy algorithm that is vulnerable to practical collision attacks, it still has various in-kernel users that implement legacy protocols. Switching to a simple library API, which is the way the code should have been organized originally, will greatly simplify their code. For example: MD5: drivers/md/dm-crypt.c (for lmk IV generation) fs/nfsd/nfs4recover.c fs/ecryptfs/ fs/smb/client/ net/{ipv4,ipv6}/ (for TCP-MD5 signatures) HMAC-MD5: fs/smb/client/ fs/smb/server/ (Also net/sctp/ if it continues using HMAC-MD5 for cookie generation. However, that use case has the flexibility to upgrade to a more modern algorithm, which I'll be proposing instead.) As usual, the "md5" and "hmac(md5)" crypto_shash algorithms will also be reimplemented on top of these library functions. For "hmac(md5)" this will provide a faster, more streamlined implementation. Link: https://lore.kernel.org/r/20250805222855.10362-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
bce5816672 |
lib/crypto: sha512: Use underlying functions instead of crypto_simd_usable()
Since sha512_kunit tests the fallback code paths without using crypto_simd_disabled_for_test, make the SHA-512 code just use the underlying may_use_simd() and irq_fpu_usable() functions directly instead of crypto_simd_usable(). This eliminates an unnecessary layer. Link: https://lore.kernel.org/r/20250731223651.136939-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
640d31ea83 |
lib/crypto: sha256: Use underlying functions instead of crypto_simd_usable()
Since sha256_kunit tests the fallback code paths without using crypto_simd_disabled_for_test, make the SHA-256 code just use the underlying may_use_simd() and irq_fpu_usable() functions directly instead of crypto_simd_usable(). This eliminates an unnecessary layer. While doing this, also add likely() annotations, and fix a minor inconsistency where the static keys in the sha256.h files were in a different place than in the corresponding sha1.h and sha512.h files. Link: https://lore.kernel.org/r/20250731223510.136650-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Junhui Pei
|
ae91aea2d2 |
ubsan: Fix incorrect hand-side used in handle
__ubsan_handle_divrem_overflow() incorrectly uses the RHS to report.
It always reports the same log: division of -1 by -1. But it should
report division of LHS by -1.
Signed-off-by: Junhui Pei <paradoxskin233@gmail.com>
Fixes:
|
||
|
Linus Torvalds
|
32b7144f80 |
Crypto library fixes for v6.17-rc3
Fix a regression where 'make clean' stopped removing some of the generated assembly files on arm and arm64. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQSacvsUNc7UX4ntmEPzXCl4vpKOKwUCaKaR/xQcZWJpZ2dlcnNA a2VybmVsLm9yZwAKCRDzXCl4vpKOK486AP4z3+DbFNj3WHLA/O3uFxgR4eiUW9tl gVtzslK5j2rxLwEAuOrY0qAhzX2dJ0/KN6y7T1qtOEZoGIZ2j85HDvMh3wU= =d+ja -----END PGP SIGNATURE----- Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux Pull crypto library fixes from Eric Biggers: "Fix a regression where 'make clean' stopped removing some of the generated assembly files on arm and arm64" * tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: lib/crypto: ensure generated *.S files are removed on make clean lib/crypto: sha: Update Kconfig help for SHA1 and SHA256 |
||
|
David Sterba
|
d223619883 |
lib/lzo: add unlikely hints to overrun checks
The NEED_* macros do an implicit goto in case the safety bounds checks fail. Add the unlikely hints as this is the error case and not a hot path. The final assembly is slightly shorter and some jumps got reordered according to the hints. text data bss dec hex filename 2294 16 0 2310 906 pre/lzo1x_decompress_safe.o 2277 16 0 2293 8f5 post/lzo1x_decompress_safe.o text data bss dec hex filename 3444 48 0 3492 da4 pre/lzo1x_compress_safe.o 3372 48 0 3420 d5c post/lzo1x_compress_safe.o Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Eric Biggers
|
5ff74f5f71 |
lib/crc: Drop inline from all *_mod_init_arch() functions
Drop 'inline' from all the *_mod_init_arch() functions so that the compiler will warn about any bugs where they are unused due to not being wired up properly. (There are no such bugs currently, so this just establishes a more robust convention for the future. Of course, these functions also tend to get inlined anyway, regardless of the keyword.) Link: https://lore.kernel.org/r/20250816020240.431545-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Thomas Weißschuh
|
29128da29d |
kunit: Always descend into kunit directory during build
For kbuild to properly clean up these build artifacts in the subdirectory, even after CONFIG_KUNIT changed do disabled, the directory needs to be processed always. Pushing the special logic for hook.o into the kunit Makefile also makes the logic easier to understand. Link: https://lore.kernel.org/r/20250813-kunit-always-descend-v1-1-7bbd387ff13b@linutronix.de Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Tal Zussman
|
fd7e5de4b2 |
lib/crypto: ensure generated *.S files are removed on make clean
make clean does not check the kernel config when removing files. As
such, additions to clean-files under CONFIG_ARM or CONFIG_ARM64 are not
evaluated. For example, when building on arm64, this means that
lib/crypto/arm64/sha{256,512}-core.S are left over after make clean.
Set clean-files unconditionally to ensure that make clean removes these
files.
Fixes:
|
||
|
Eric Biggers
|
d73915fdc0 |
lib/crypto: sha: Update Kconfig help for SHA1 and SHA256
Update the help text for CRYPTO_LIB_SHA1 and CRYPTO_LIB_SHA256 to reflect the addition of HMAC support, and to be consistent with CRYPTO_LIB_SHA512. Link: https://lore.kernel.org/r/20250731224218.137947-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Linus Torvalds
|
63467137ec |
Including fixes from Netfilter and IPsec.
Current release - regressions:
- netfilter: nft_set_pipapo:
- don't return bogus extension pointer
- fix null deref for empty set
Current release - new code bugs:
- core: prevent deadlocks when enabling NAPIs with mixed kthread config
- eth: netdevsim: Fix wild pointer access in nsim_queue_free().
Previous releases - regressions:
- page_pool: allow enabling recycling late, fix false positive warning
- sched: ets: use old 'nbands' while purging unused classes
- xfrm:
- restore GSO for SW crypto
- bring back device check in validate_xmit_xfrm
- tls: handle data disappearing from under the TLS ULP
- ptp: prevent possible ABBA deadlock in ptp_clock_freerun()
- eth: bnxt: fill data page pool with frags if PAGE_SIZE > BNXT_RX_PAGE_SIZE
- eth: hv_netvsc: fix panic during namespace deletion with VF
Previous releases - always broken:
- netfilter: fix refcount leak on table dump
- vsock: do not allow binding to VMADDR_PORT_ANY
- sctp: linearize cloned gso packets in sctp_rcv
- eth: hibmcge: fix the division by zero issue
- eth: microchip: fix KSZ8863 reset problem
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from Netfilter and IPsec.
Current release - regressions:
- netfilter: nft_set_pipapo:
- don't return bogus extension pointer
- fix null deref for empty set
Current release - new code bugs:
- core: prevent deadlocks when enabling NAPIs with mixed kthread
config
- eth: netdevsim: Fix wild pointer access in nsim_queue_free().
Previous releases - regressions:
- page_pool: allow enabling recycling late, fix false positive
warning
- sched: ets: use old 'nbands' while purging unused classes
- xfrm:
- restore GSO for SW crypto
- bring back device check in validate_xmit_xfrm
- tls: handle data disappearing from under the TLS ULP
- ptp: prevent possible ABBA deadlock in ptp_clock_freerun()
- eth:
- bnxt: fill data page pool with frags if PAGE_SIZE > BNXT_RX_PAGE_SIZE
- hv_netvsc: fix panic during namespace deletion with VF
Previous releases - always broken:
- netfilter: fix refcount leak on table dump
- vsock: do not allow binding to VMADDR_PORT_ANY
- sctp: linearize cloned gso packets in sctp_rcv
- eth:
- hibmcge: fix the division by zero issue
- microchip: fix KSZ8863 reset problem"
* tag 'net-6.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (54 commits)
net: usb: asix_devices: add phy_mask for ax88772 mdio bus
net: kcm: Fix race condition in kcm_unattach()
selftests: net/forwarding: test purge of active DWRR classes
net/sched: ets: use old 'nbands' while purging unused classes
bnxt: fill data page pool with frags if PAGE_SIZE > BNXT_RX_PAGE_SIZE
netdevsim: Fix wild pointer access in nsim_queue_free().
net: mctp: Fix bad kfree_skb in bind lookup test
netfilter: nf_tables: reject duplicate device on updates
ipvs: Fix estimator kthreads preferred affinity
netfilter: nft_set_pipapo: fix null deref for empty set
selftests: tls: test TCP stealing data from under the TLS socket
tls: handle data disappearing from under the TLS ULP
ptp: prevent possible ABBA deadlock in ptp_clock_freerun()
ixgbe: prevent from unwanted interface name changes
devlink: let driver opt out of automatic phys_port_name generation
net: prevent deadlocks when enabling NAPIs with mixed kthread config
net: update NAPI threaded config even for disabled NAPIs
selftests: drv-net: don't assume device has only 2 queues
docs: Fix name for net.ipv4.udp_child_hash_entries
riscv: dts: thead: Add APB clocks for TH1520 GMACs
...
|
||
|
Jeff Layton
|
52966bf71d |
ref_tracker: use %p instead of %px in debugfs dentry name
As Kees points out, this is a kernel address leak, and debugging is
not a sufficiently good reason to expose the real kernel address.
Fixes:
|
||
|
Eric Biggers
|
c2a0c5156a |
lib/crc: Use underlying functions instead of crypto_simd_usable()
Since crc_kunit now tests the fallback code paths without using crypto_simd_disabled_for_test, make the CRC code just use the underlying may_use_simd() and irq_fpu_usable() functions directly instead of crypto_simd_usable(). This eliminates an unnecessary layer. Take the opportunity to add likely() and unlikely() annotations as well. Link: https://lore.kernel.org/r/20250811182631.376302-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
842ec21357 |
lib/crc: crc_kunit: Test CRC computation in interrupt contexts
Test that if CRCs are computed in task, softirq, and hardirq context concurrently, then all results are as expected. Implement this using kunit_run_irq_test() which is also used by the lib/crypto/ tests. As with the corresponding lib/crypto/ tests, the purpose of this is to test fallback code paths and to exercise edge cases in the architecture's support for in-kernel FPU/SIMD/vector. Remove the code from crc_test() that sometimes disabled interrupts, as that was just an incomplete attempt to achieve similar test coverage. Link: https://lore.kernel.org/r/20250811182631.376302-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
b41dc83f07 |
kunit, lib/crypto: Move run_irq_test() to common header
Rename run_irq_test() to kunit_run_irq_test() and move it to a public header so that it can be reused by crc_kunit. Link: https://lore.kernel.org/r/20250811182631.376302-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Linus Torvalds
|
2988dfed8a |
block-6.17-20250808
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Merge tag 'block-6.17-20250808' of git://git.kernel.dk/linux
Pull more block updates from Jens Axboe:
- MD pull request via Yu:
- mddev null-ptr-dereference fix, by Erkun
- md-cluster fail to remove the faulty disk regression fix, by
Heming
- minor cleanup, by Li Nan and Jinchao
- mdadm lifetime regression fix reported by syzkaller, by Yu Kuai
- MD pull request via Christoph
- add support for getting the FDP featuee in fabrics passthru path
(Nitesh Shetty)
- add capability to connect to an administrative controller
(Kamaljit Singh)
- fix a leak on sgl setup error (Keith Busch)
- initialize discovery subsys after debugfs is initialized
(Mohamed Khalfella)
- fix various comment typos (Bjorn Helgaas)
- remove unneeded semicolons (Jiapeng Chong)
- nvmet debugfs ordering issue fix
- Fix UAF in the tag_set in zloop
- Ensure sbitmap shallow depth covers entire set
- Reduce lock roundtrips in io context lookup
- Move scheduler tags alloc/free out of elevator and freeze lock, to
fix some lockdep found issues
- Improve robustness of queue limits checking
- Fix a regression with IO priorities, if no io context exists
* tag 'block-6.17-20250808' of git://git.kernel.dk/linux: (26 commits)
lib/sbitmap: make sbitmap_get_shallow() internal
lib/sbitmap: convert shallow_depth from one word to the whole sbitmap
nvmet: exit debugfs after discovery subsystem exits
block, bfq: Reorder struct bfq_iocq_bfqq_data
md: make rdev_addable usable for rcu mode
md/raid1: remove struct pool_info and related code
md/raid1: change r1conf->r1bio_pool to a pointer type
block: ensure discard_granularity is zero when discard is not supported
zloop: fix KASAN use-after-free of tag set
block: Fix default IO priority if there is no IO context
nvme: fix various comment typos
nvme-auth: remove unneeded semicolon
nvme-pci: fix leak on sgl setup error
nvmet: initialize discovery subsys after debugfs is initialized
nvme: add capability to connect to an administrative controller
nvmet: add support for FDP in fabrics passthru path
md: rename recovery_cp to resync_offset
md/md-cluster: handle REMOVE message earlier
md: fix create on open mddev lifetime regression
block: fix potential deadlock while running nr_hw_queue update
...
|
||
|
Yu Kuai
|
45fa9f97e6 |
lib/sbitmap: make sbitmap_get_shallow() internal
Because it's only used in sbitmap.c Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20250807032413.1469456-3-yukuai1@huaweicloud.com Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Yu Kuai
|
42e6c6ce03 |
lib/sbitmap: convert shallow_depth from one word to the whole sbitmap
Currently elevators will record internal 'async_depth' to throttle asynchronous requests, and they both calculate shallow_dpeth based on sb->shift, with the respect that sb->shift is the available tags in one word. However, sb->shift is not the availbale tags in the last word, see __map_depth: if (index == sb->map_nr - 1) return sb->depth - (index << sb->shift); For consequence, if the last word is used, more tags can be get than expected, for example, assume nr_requests=256 and there are four words, in the worst case if user set nr_requests=32, then the first word is the last word, and still use bits per word, which is 64, to calculate async_depth is wrong. One the ohter hand, due to cgroup qos, bfq can allow only one request to be allocated, and set shallow_dpeth=1 will still allow the number of words request to be allocated. Fix this problems by using shallow_depth to the whole sbitmap instead of per word, also change kyber, mq-deadline and bfq to follow this, a new helper __map_depth_with_shallow() is introduced to calculate available bits in each word. Signed-off-by: Yu Kuai <yukuai3@huawei.com> Link: https://lore.kernel.org/r/20250807032413.1469456-2-yukuai1@huaweicloud.com Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Ingo Molnar
|
a53d0cf7f1 |
Merge commit 'linus' into core/bugs, to resolve conflicts
Resolve conflicts with this commit that was developed in parallel
during the merge window:
|
||
|
Linus Torvalds
|
35a813e010 |
printk changes for 6.17
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||
|
Petr Mladek
|
731ae3ad96 | Merge branch 'for-6.17-hash_pointers' into for-linus | ||
|
Petr Mladek
|
3bfd34ed36 | Merge branch 'for-6.15-printf-attribute' into for-linus | ||
|
Linus Torvalds
|
e991acf1bc |
Significant patch series in this pull request:
- The 2 patch series "squashfs: Remove page->mapping references" from
Matthew Wilcox gets us closer to being able to remove page->mapping.
- The 5 patch series "relayfs: misc changes" from Jason Xing does some
maintenance and minor feature addition work in relayfs.
- The 5 patch series "kdump: crashkernel reservation from CMA" from Jiri
Bohac switches us from static preallocation of the kdump crashkernel's
working memory over to dynamic allocation. So the difficulty of
a-priori estimation of the second kernel's needs is removed and the
first kernel obtains extra memory.
- The 5 patch series "generalize panic_print's dump function to be used
by other kernel parts" from Feng Tang implements some consolidation and
rationalizatio of the various ways in which a faiing kernel splats
information at the operator.
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Merge tag 'mm-nonmm-stable-2025-08-03-12-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
"Significant patch series in this pull request:
- "squashfs: Remove page->mapping references" (Matthew Wilcox) gets
us closer to being able to remove page->mapping
- "relayfs: misc changes" (Jason Xing) does some maintenance and
minor feature addition work in relayfs
- "kdump: crashkernel reservation from CMA" (Jiri Bohac) switches
us from static preallocation of the kdump crashkernel's working
memory over to dynamic allocation. So the difficulty of a-priori
estimation of the second kernel's needs is removed and the first
kernel obtains extra memory
- "generalize panic_print's dump function to be used by other
kernel parts" (Feng Tang) implements some consolidation and
rationalization of the various ways in which a failing kernel
splats information at the operator
* tag 'mm-nonmm-stable-2025-08-03-12-47' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (80 commits)
tools/getdelays: add backward compatibility for taskstats version
kho: add test for kexec handover
delaytop: enhance error logging and add PSI feature description
samples: Kconfig: fix spelling mistake "instancess" -> "instances"
fat: fix too many log in fat_chain_add()
scripts/spelling.txt: add notifer||notifier to spelling.txt
xen/xenbus: fix typo "notifer"
net: mvneta: fix typo "notifer"
drm/xe: fix typo "notifer"
cxl: mce: fix typo "notifer"
KVM: x86: fix typo "notifer"
MAINTAINERS: add maintainers for delaytop
ucount: use atomic_long_try_cmpxchg() in atomic_long_inc_below()
ucount: fix atomic_long_inc_below() argument type
kexec: enable CMA based contiguous allocation
stackdepot: make max number of pools boot-time configurable
lib/xxhash: remove unused functions
init/Kconfig: restore CONFIG_BROKEN help text
lib/raid6: update recov_rvv.c zero page usage
docs: update docs after introducing delaytop
...
|
||
|
Linus Torvalds
|
8877fcb70f |
This is a small set of changes for modules, primarily to extend module users
to use the module data structures in combination with the already no-op stub module functions, even when support for modules is disabled in the kernel configuration. This change follows the kernel's coding style for conditional compilation and allows kunit code to drop all CONFIG_MODULES ifdefs, which is also part of the changes. This should allow others part of the kernel to do the same cleanup. Note that this had a conflict with sysctl changes [1] but should be fixed now as I rebased on top. The remaining changes include a fix for module name length handling which could potentially lead to the removal of an incorrect module, and various cleanups. The module name fix and related cleanup has been in linux-next since Thursday (July 31) while the rest of the changes for a bit more than 3 weeks. Note that this currently has conflicts in next with kbuild's tree [2]. Link: https://lore.kernel.org/all/20250714175916.774e6d79@canb.auug.org.au/ [1] Link: https://lore.kernel.org/all/20250801132941.6815d93d@canb.auug.org.au/ [2] -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE73Ua4R8Pc+G5xjxTQJ6jxB8ZUfsFAmiPQgkACgkQQJ6jxB8Z UfuPTA//XrRguJFBhQh6cUWqVleTNQJuhjiPsOSO5S52aVET4wsrnRNeM2eM5oqw 0+6ELvhIJINQ1LjpOP8D67d8P5Ds1/qM1pbQIkQsoKiEj6E7Q4dXH5N0uyf/BzO3 HaosLG9cpqcomlSorYEiYoPjqy9EChQzsi+YAYWAB+fW6bvU/AdUHTRH88m3ppBJ Y22BTTPOKKyj5/QgfY+kwH8TTnrzCzY8aoOqW7uimLI5h4c9dFQ2PigRJnoMfDG1 11w5VshOTzZJvNFrUk5GVSirwlxdJDbW6dKfG0DD5+eNWK5dfIEc+/EcuhaGoPvO Euwv8VQubdxHTAG6kzHI0MtxAVQUM1gyz8zHiu18eW++GTtnTFs6m8E6H9AC176G nDkUh3qSxJN2HHgxtS9VUExEEZpYqtWeB9Zts8K3oSWvTaQenHWpVHPADkxzS4JU Jvkjq8SiKo+RqHxaOKfyf1RfOtYe5tjMCLrP7zX39d1+cwGxuc6mip/omY9HFDgn op132fYdt24JSHoioJDzRz9mTfvj3nICEmgX4D4WDQx5lP27CUcLugPnBNHPp0fu 5hL+ajy8M8nq4zm/42Y+F7VS74TIA6mSnJKs9dMCknUWueD6HrDEU9xHi1YMpUMZ cBUSpU+P94dCIScwEzkp926vDnHyxCHLbpF1Jsq5qNNdj7AelHk= =4bGB -----END PGP SIGNATURE----- Merge tag 'modules-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux Pull module updates from Daniel Gomez: "This is a small set of changes for modules, primarily to extend module users to use the module data structures in combination with the already no-op stub module functions, even when support for modules is disabled in the kernel configuration. This change follows the kernel's coding style for conditional compilation and allows kunit code to drop all CONFIG_MODULES ifdefs, which is also part of the changes. This should allow others part of the kernel to do the same cleanup. The remaining changes include a fix for module name length handling which could potentially lead to the removal of an incorrect module, and various cleanups" * tag 'modules-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux: module: Rename MAX_PARAM_PREFIX_LEN to __MODULE_NAME_LEN tracing: Replace MAX_PARAM_PREFIX_LEN with MODULE_NAME_LEN module: Restore the moduleparam prefix length check module: Remove unnecessary +1 from last_unloaded_module::name size module: Prevent silent truncation of module name in delete_module(2) kunit: test: Drop CONFIG_MODULE ifdeffery module: make structure definitions always visible module: move 'struct module_use' to internal.h |
||
|
Mike Rapoport (Microsoft)
|
b753522bed |
kho: add test for kexec handover
Testing kexec handover requires a kernel driver that will generate some data and preserve it with KHO on the first boot and then restore that data and verify it was preserved properly after kexec. To facilitate such test, along with the kernel driver responsible for data generation, preservation and restoration add a script that runs a kernel in a VM with a minimal /init. The /init enables KHO, loads a kernel image for kexec and runs kexec reboot. After the boot of the kexeced kernel, the driver verifies that the data was properly preserved. [rppt@kernel.org: fix section mismatch] Link: https://lkml.kernel.org/r/aIiRC8fXiOXKbPM_@kernel.org Link: https://lkml.kernel.org/r/20250727083733.2590139-1-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Alexander Graf <graf@amazon.com> Cc: Changyuan Lyu <changyuanl@google.com> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Pratyush Yadav <pratyush@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Matt Fleming
|
ed4f142f72 |
stackdepot: make max number of pools boot-time configurable
We're hitting the WARN in depot_init_pool() about reaching the stack depot limit because we have long stacks that don't dedup very well. Introduce a new start-up parameter to allow users to set the number of maximum stack depot pools. Link: https://lkml.kernel.org/r/20250718153928.94229-1-matt@readmodwrite.com Signed-off-by: Matt Fleming <mfleming@cloudflare.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Marco Elver <elver@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Oscar Salvador <osalvador@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Dr. David Alan Gilbert
|
6c6d8f8ba7 |
lib/xxhash: remove unused functions
xxh32_digest() and xxh32_update() were added in 2017 in the original xxhash commit, but have remained unused. Remove them. Link: https://lkml.kernel.org/r/20250716133245.243363-1-linux@treblig.org Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Dave Gilbert <linux@treblig.org> Cc: Nick Terrell <terrelln@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
f2d282e1df |
bitmap-for-6.17
Bits-related patched for 6.17: - find_random_bit() series (Yury); - GENMASK() consolidation (Vincent); - random cleanups (Shaopeng, Ben, Yury) -----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEEi8GdvG6xMhdgpu/4sUSA/TofvsgFAmiLkz0ACgkQsUSA/Tof vsj7MgwAvRSyevYSm9cm1Y99098M/7gWeJUeLAIy0GJdFaBQIcMkXkRGXJ9A0ZHb RoCFG4eiukHIDHRzJjncXUNTk0zVCbEifUF43BdnJrhjTePlou5SNVh6xhJfQ1Ai ENB4Q+nAZyIm43cUnoDhR24ne3pgJcY+oe6e7sQTRFF/6+nB4RDHmjIAMVsYgH30 w8iPBxNXXULAZNDgOPA3J5bACEnZPfOAhtoiNBC9s4MsE4o+Q8E9FVhReI2tiIhk t98kVZu7TFyrGcCdLz8EgbcG4KPFBmwOwOv8S1Mzgy46MwS//dd7MZA7y3MqTvJ/ VEMoTMAK14/VrgDxu/vdBsUJt/T1wPc+ZbUt/rNb530oSDkvjIo+4ihg1nfswqhn u+fj65wAHRW7CSkgpHn3bM/wvxmtIaE6AoY6jWwyuZ1zGIEV+5iPBo56kkmpJlYj GlnbiTHkNR/jGa1GwB3PDG2kzoqXVLz6EeFdZncUX53MGa90g0+5/k0ld+oBJTDh 7QbkZlW1 =uj9U -----END PGP SIGNATURE----- Merge tag 'bitmap-for-6.17' of https://github.com/norov/linux Pull bitmap updates from Yury Norov: - find_random_bit() series (Yury) - GENMASK() consolidation (Vincent) - random cleanups (Shaopeng, Ben, Yury) * tag 'bitmap-for-6.17' of https://github.com/norov/linux: bitfield: Ensure the return values of helper functions are checked test_bits: add tests for __GENMASK() and __GENMASK_ULL() bits: unify the non-asm GENMASK*() bits: split the definition of the asm and non-asm GENMASK*() cpumask: Remove unnecessary cpumask_nth_andnot() watchdog: fix opencoded cpumask_next_wrap() in watchdog_next_cpu() clocksource: Improve randomness in clocksource_verify_choose_cpus() cpumask: introduce cpumask_random() bitmap: generalize node_random() |
||
|
Linus Torvalds
|
beace86e61 |
Summary of significant series in this pull request:
- The 4 patch series "mm: ksm: prevent KSM from breaking merging of new
VMAs" from Lorenzo Stoakes addresses an issue with KSM's
PR_SET_MEMORY_MERGE mode: newly mapped VMAs were not eligible for
merging with existing adjacent VMAs.
- The 4 patch series "mm/damon: introduce DAMON_STAT for simple and
practical access monitoring" from SeongJae Park adds a new kernel module
which simplifies the setup and usage of DAMON in production
environments.
- The 6 patch series "stop passing a writeback_control to swap/shmem
writeout" from Christoph Hellwig is a cleanup to the writeback code
which removes a couple of pointers from struct writeback_control.
- The 7 patch series "drivers/base/node.c: optimization and cleanups"
from Donet Tom contains largely uncorrelated cleanups to the NUMA node
setup and management code.
- The 4 patch series "mm: userfaultfd: assorted fixes and cleanups" from
Tal Zussman does some maintenance work on the userfaultfd code.
- The 5 patch series "Readahead tweaks for larger folios" from Ryan
Roberts implements some tuneups for pagecache readahead when it is
reading into order>0 folios.
- The 4 patch series "selftests/mm: Tweaks to the cow test" from Mark
Brown provides some cleanups and consistency improvements to the
selftests code.
- The 4 patch series "Optimize mremap() for large folios" from Dev Jain
does that. A 37% reduction in execution time was measured in a
memset+mremap+munmap microbenchmark.
- The 5 patch series "Remove zero_user()" from Matthew Wilcox expunges
zero_user() in favor of the more modern memzero_page().
- The 3 patch series "mm/huge_memory: vmf_insert_folio_*() and
vmf_insert_pfn_pud() fixes" from David Hildenbrand addresses some warts
which David noticed in the huge page code. These were not known to be
causing any issues at this time.
- The 3 patch series "mm/damon: use alloc_migrate_target() for
DAMOS_MIGRATE_{HOT,COLD" from SeongJae Park provides some cleanup and
consolidation work in DAMON.
- The 3 patch series "use vm_flags_t consistently" from Lorenzo Stoakes
uses vm_flags_t in places where we were inappropriately using other
types.
- The 3 patch series "mm/memfd: Reserve hugetlb folios before
allocation" from Vivek Kasireddy increases the reliability of large page
allocation in the memfd code.
- The 14 patch series "mm: Remove pXX_devmap page table bit and pfn_t
type" from Alistair Popple removes several now-unneeded PFN_* flags.
- The 5 patch series "mm/damon: decouple sysfs from core" from SeongJae
Park implememnts some cleanup and maintainability work in the DAMON
sysfs layer.
- The 5 patch series "madvise cleanup" from Lorenzo Stoakes does quite a
lot of cleanup/maintenance work in the madvise() code.
- The 4 patch series "madvise anon_name cleanups" from Vlastimil Babka
provides additional cleanups on top or Lorenzo's effort.
- The 11 patch series "Implement numa node notifier" from Oscar Salvador
creates a standalone notifier for NUMA node memory state changes.
Previously these were lumped under the more general memory on/offline
notifier.
- The 6 patch series "Make MIGRATE_ISOLATE a standalone bit" from Zi Yan
cleans up the pageblock isolation code and fixes a potential issue which
doesn't seem to cause any problems in practice.
- The 5 patch series "selftests/damon: add python and drgn based DAMON
sysfs functionality tests" from SeongJae Park adds additional drgn- and
python-based DAMON selftests which are more comprehensive than the
existing selftest suite.
- The 5 patch series "Misc rework on hugetlb faulting path" from Oscar
Salvador fixes a rather obscure deadlock in the hugetlb fault code and
follows that fix with a series of cleanups.
- The 3 patch series "cma: factor out allocation logic from
__cma_declare_contiguous_nid" from Mike Rapoport rationalizes and cleans
up the highmem-specific code in the CMA allocator.
- The 28 patch series "mm/migration: rework movable_ops page migration
(part 1)" from David Hildenbrand provides cleanups and
future-preparedness to the migration code.
- The 2 patch series "mm/damon: add trace events for auto-tuned
monitoring intervals and DAMOS quota" from SeongJae Park adds some
tracepoints to some DAMON auto-tuning code.
- The 6 patch series "mm/damon: fix misc bugs in DAMON modules" from
SeongJae Park does that.
- The 6 patch series "mm/damon: misc cleanups" from SeongJae Park also
does what it claims.
- The 4 patch series "mm: folio_pte_batch() improvements" from David
Hildenbrand cleans up the large folio PTE batching code.
- The 13 patch series "mm/damon/vaddr: Allow interleaving in
migrate_{hot,cold} actions" from SeongJae Park facilitates dynamic
alteration of DAMON's inter-node allocation policy.
- The 3 patch series "Remove unmap_and_put_page()" from Vishal Moola
provides a couple of page->folio conversions.
- The 4 patch series "mm: per-node proactive reclaim" from Davidlohr
Bueso implements a per-node control of proactive reclaim - beyond the
current memcg-based implementation.
- The 14 patch series "mm/damon: remove damon_callback" from SeongJae
Park replaces the damon_callback interface with a more general and
powerful damon_call()+damos_walk() interface.
- The 10 patch series "mm/mremap: permit mremap() move of multiple VMAs"
from Lorenzo Stoakes implements a number of mremap cleanups (of course)
in preparation for adding new mremap() functionality: newly permit the
remapping of multiple VMAs when the user is specifying MREMAP_FIXED. It
still excludes some specialized situations where this cannot be
performed reliably.
- The 3 patch series "drop hugetlb_free_pgd_range()" from Anthony Yznaga
switches some sparc hugetlb code over to the generic version and removes
the thus-unneeded hugetlb_free_pgd_range().
- The 4 patch series "mm/damon/sysfs: support periodic and automated
stats update" from SeongJae Park augments the present
userspace-requested update of DAMON sysfs monitoring files. Automatic
update is now provided, along with a tunable to control the update
interval.
- The 4 patch series "Some randome fixes and cleanups to swapfile" from
Kemeng Shi does what is claims.
- The 4 patch series "mm: introduce snapshot_page" from Luiz Capitulino
and David Hildenbrand provides (and uses) a means by which debug-style
functions can grab a copy of a pageframe and inspect it locklessly
without tripping over the races inherent in operating on the live
pageframe directly.
- The 6 patch series "use per-vma locks for /proc/pid/maps reads" from
Suren Baghdasaryan addresses the large contention issues which can be
triggered by reads from that procfs file. Latencies are reduced by more
than half in some situations. The series also introduces several new
selftests for the /proc/pid/maps interface.
- The 6 patch series "__folio_split() clean up" from Zi Yan cleans up
__folio_split()!
- The 7 patch series "Optimize mprotect() for large folios" from Dev
Jain provides some quite large (>3x) speedups to mprotect() when dealing
with large folios.
- The 2 patch series "selftests/mm: reuse FORCE_READ to replace "asm
volatile("" : "+r" (XXX));" and some cleanup" from wang lian does some
cleanup work in the selftests code.
- The 3 patch series "tools/testing: expand mremap testing" from Lorenzo
Stoakes extends the mremap() selftest in several ways, including adding
more checking of Lorenzo's recently added "permit mremap() move of
multiple VMAs" feature.
- The 22 patch series "selftests/damon/sysfs.py: test all parameters"
from SeongJae Park extends the DAMON sysfs interface selftest so that it
tests all possible user-requested parameters. Rather than the present
minimal subset.
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Merge tag 'mm-stable-2025-07-30-15-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"As usual, many cleanups. The below blurbiage describes 42 patchsets.
21 of those are partially or fully cleanup work. "cleans up",
"cleanup", "maintainability", "rationalizes", etc.
I never knew the MM code was so dirty.
"mm: ksm: prevent KSM from breaking merging of new VMAs" (Lorenzo Stoakes)
addresses an issue with KSM's PR_SET_MEMORY_MERGE mode: newly
mapped VMAs were not eligible for merging with existing adjacent
VMAs.
"mm/damon: introduce DAMON_STAT for simple and practical access monitoring" (SeongJae Park)
adds a new kernel module which simplifies the setup and usage of
DAMON in production environments.
"stop passing a writeback_control to swap/shmem writeout" (Christoph Hellwig)
is a cleanup to the writeback code which removes a couple of
pointers from struct writeback_control.
"drivers/base/node.c: optimization and cleanups" (Donet Tom)
contains largely uncorrelated cleanups to the NUMA node setup and
management code.
"mm: userfaultfd: assorted fixes and cleanups" (Tal Zussman)
does some maintenance work on the userfaultfd code.
"Readahead tweaks for larger folios" (Ryan Roberts)
implements some tuneups for pagecache readahead when it is reading
into order>0 folios.
"selftests/mm: Tweaks to the cow test" (Mark Brown)
provides some cleanups and consistency improvements to the
selftests code.
"Optimize mremap() for large folios" (Dev Jain)
does that. A 37% reduction in execution time was measured in a
memset+mremap+munmap microbenchmark.
"Remove zero_user()" (Matthew Wilcox)
expunges zero_user() in favor of the more modern memzero_page().
"mm/huge_memory: vmf_insert_folio_*() and vmf_insert_pfn_pud() fixes" (David Hildenbrand)
addresses some warts which David noticed in the huge page code.
These were not known to be causing any issues at this time.
"mm/damon: use alloc_migrate_target() for DAMOS_MIGRATE_{HOT,COLD" (SeongJae Park)
provides some cleanup and consolidation work in DAMON.
"use vm_flags_t consistently" (Lorenzo Stoakes)
uses vm_flags_t in places where we were inappropriately using other
types.
"mm/memfd: Reserve hugetlb folios before allocation" (Vivek Kasireddy)
increases the reliability of large page allocation in the memfd
code.
"mm: Remove pXX_devmap page table bit and pfn_t type" (Alistair Popple)
removes several now-unneeded PFN_* flags.
"mm/damon: decouple sysfs from core" (SeongJae Park)
implememnts some cleanup and maintainability work in the DAMON
sysfs layer.
"madvise cleanup" (Lorenzo Stoakes)
does quite a lot of cleanup/maintenance work in the madvise() code.
"madvise anon_name cleanups" (Vlastimil Babka)
provides additional cleanups on top or Lorenzo's effort.
"Implement numa node notifier" (Oscar Salvador)
creates a standalone notifier for NUMA node memory state changes.
Previously these were lumped under the more general memory
on/offline notifier.
"Make MIGRATE_ISOLATE a standalone bit" (Zi Yan)
cleans up the pageblock isolation code and fixes a potential issue
which doesn't seem to cause any problems in practice.
"selftests/damon: add python and drgn based DAMON sysfs functionality tests" (SeongJae Park)
adds additional drgn- and python-based DAMON selftests which are
more comprehensive than the existing selftest suite.
"Misc rework on hugetlb faulting path" (Oscar Salvador)
fixes a rather obscure deadlock in the hugetlb fault code and
follows that fix with a series of cleanups.
"cma: factor out allocation logic from __cma_declare_contiguous_nid" (Mike Rapoport)
rationalizes and cleans up the highmem-specific code in the CMA
allocator.
"mm/migration: rework movable_ops page migration (part 1)" (David Hildenbrand)
provides cleanups and future-preparedness to the migration code.
"mm/damon: add trace events for auto-tuned monitoring intervals and DAMOS quota" (SeongJae Park)
adds some tracepoints to some DAMON auto-tuning code.
"mm/damon: fix misc bugs in DAMON modules" (SeongJae Park)
does that.
"mm/damon: misc cleanups" (SeongJae Park)
also does what it claims.
"mm: folio_pte_batch() improvements" (David Hildenbrand)
cleans up the large folio PTE batching code.
"mm/damon/vaddr: Allow interleaving in migrate_{hot,cold} actions" (SeongJae Park)
facilitates dynamic alteration of DAMON's inter-node allocation
policy.
"Remove unmap_and_put_page()" (Vishal Moola)
provides a couple of page->folio conversions.
"mm: per-node proactive reclaim" (Davidlohr Bueso)
implements a per-node control of proactive reclaim - beyond the
current memcg-based implementation.
"mm/damon: remove damon_callback" (SeongJae Park)
replaces the damon_callback interface with a more general and
powerful damon_call()+damos_walk() interface.
"mm/mremap: permit mremap() move of multiple VMAs" (Lorenzo Stoakes)
implements a number of mremap cleanups (of course) in preparation
for adding new mremap() functionality: newly permit the remapping
of multiple VMAs when the user is specifying MREMAP_FIXED. It still
excludes some specialized situations where this cannot be performed
reliably.
"drop hugetlb_free_pgd_range()" (Anthony Yznaga)
switches some sparc hugetlb code over to the generic version and
removes the thus-unneeded hugetlb_free_pgd_range().
"mm/damon/sysfs: support periodic and automated stats update" (SeongJae Park)
augments the present userspace-requested update of DAMON sysfs
monitoring files. Automatic update is now provided, along with a
tunable to control the update interval.
"Some randome fixes and cleanups to swapfile" (Kemeng Shi)
does what is claims.
"mm: introduce snapshot_page" (Luiz Capitulino and David Hildenbrand)
provides (and uses) a means by which debug-style functions can grab
a copy of a pageframe and inspect it locklessly without tripping
over the races inherent in operating on the live pageframe
directly.
"use per-vma locks for /proc/pid/maps reads" (Suren Baghdasaryan)
addresses the large contention issues which can be triggered by
reads from that procfs file. Latencies are reduced by more than
half in some situations. The series also introduces several new
selftests for the /proc/pid/maps interface.
"__folio_split() clean up" (Zi Yan)
cleans up __folio_split()!
"Optimize mprotect() for large folios" (Dev Jain)
provides some quite large (>3x) speedups to mprotect() when dealing
with large folios.
"selftests/mm: reuse FORCE_READ to replace "asm volatile("" : "+r" (XXX));" and some cleanup" (wang lian)
does some cleanup work in the selftests code.
"tools/testing: expand mremap testing" (Lorenzo Stoakes)
extends the mremap() selftest in several ways, including adding
more checking of Lorenzo's recently added "permit mremap() move of
multiple VMAs" feature.
"selftests/damon/sysfs.py: test all parameters" (SeongJae Park)
extends the DAMON sysfs interface selftest so that it tests all
possible user-requested parameters. Rather than the present minimal
subset"
* tag 'mm-stable-2025-07-30-15-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (370 commits)
MAINTAINERS: add missing headers to mempory policy & migration section
MAINTAINERS: add missing file to cgroup section
MAINTAINERS: add MM MISC section, add missing files to MISC and CORE
MAINTAINERS: add missing zsmalloc file
MAINTAINERS: add missing files to page alloc section
MAINTAINERS: add missing shrinker files
MAINTAINERS: move memremap.[ch] to hotplug section
MAINTAINERS: add missing mm_slot.h file THP section
MAINTAINERS: add missing interval_tree.c to memory mapping section
MAINTAINERS: add missing percpu-internal.h file to per-cpu section
mm/page_alloc: remove trace_mm_alloc_contig_migrate_range_info()
selftests/damon: introduce _common.sh to host shared function
selftests/damon/sysfs.py: test runtime reduction of DAMON parameters
selftests/damon/sysfs.py: test non-default parameters runtime commit
selftests/damon/sysfs.py: generalize DAMON context commit assertion
selftests/damon/sysfs.py: generalize monitoring attributes commit assertion
selftests/damon/sysfs.py: generalize DAMOS schemes commit assertion
selftests/damon/sysfs.py: test DAMOS filters commitment
selftests/damon/sysfs.py: generalize DAMOS scheme commit assertion
selftests/damon/sysfs.py: test DAMOS destinations commitment
...
|
||
|
Vincent Mailhol
|
dcb23e1878 |
test_bits: add tests for __GENMASK() and __GENMASK_ULL()
The definitions of GENMASK() and GENMASK_ULL() do not depend any more
on __GENMASK() and __GENMASK_ULL(). Duplicate the existing unit tests
so that __GENMASK{,ULL}() are still covered.
Because __GENMASK() and __GENMASK_ULL() do use GENMASK_INPUT_CHECK(),
drop the TEST_GENMASK_FAILURES negative tests.
It would be good to have a small assembly test case for GENMASK*() in
case somebody decides to unify both in the future. However, I lack
expertise in assembly to do so. Instead add a FIXME message to
highlight the absence of the asm unit test.
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
|
||
|
Thomas Weißschuh
|
768da2eae8
|
kunit: test: Drop CONFIG_MODULE ifdeffery
The function stubs exposed by module.h allow the code to compile properly without the ifdeffery. The generated object code stays the same, as the compiler can optimize away all the dead code. As the code is still typechecked developer errors can be detected faster. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Acked-by: David Gow <davidgow@google.com> Reviewed-by: Daniel Gomez <da.gomez@samsung.com> Link: https://lore.kernel.org/r/20250711-kunit-ifdef-modules-v2-3-39443decb1f8@linutronix.de Signed-off-by: Daniel Gomez <da.gomez@samsung.com> |
||
|
Linus Torvalds
|
8be4d31cb8 |
Networking changes for 6.17.
Core & protocols
----------------
- Wrap datapath globals into net_aligned_data, to avoid false sharing.
- Preserve MSG_ZEROCOPY in forwarding (e.g. out of a container).
- Add SO_INQ and SCM_INQ support to AF_UNIX.
- Add SIOCINQ support to AF_VSOCK.
- Add TCP_MAXSEG sockopt to MPTCP.
- Add IPv6 force_forwarding sysctl to enable forwarding per interface.
- Make TCP validation of whether packet fully fits in the receive
window and the rcv_buf more strict. With increased use of HW
aggregation a single "packet" can be multiple 100s of kB.
- Add MSG_MORE flag to optimize large TCP transmissions via sockmap,
improves latency up to 33% for sockmap users.
- Convert TCP send queue handling from tasklet to BH workque.
- Improve BPF iteration over TCP sockets to see each socket exactly once.
- Remove obsolete and unused TCP RFC3517/RFC6675 loss recovery code.
- Support enabling kernel threads for NAPI processing on per-NAPI
instance basis rather than a whole device. Fully stop the kernel NAPI
thread when threaded NAPI gets disabled. Previously thread would stick
around until ifdown due to tricky synchronization.
- Allow multicast routing to take effect on locally-generated packets.
- Add output interface argument for End.X in segment routing.
- MCTP: add support for gateway routing, improve bind() handling.
- Don't require rtnl_lock when fetching an IPv6 neighbor over Netlink.
- Add a new neighbor flag ("extern_valid"), which cedes refresh
responsibilities to userspace. This is needed for EVPN multi-homing
where a neighbor entry for a multi-homed host needs to be synced
across all the VTEPs among which the host is multi-homed.
- Support NUD_PERMANENT for proxy neighbor entries.
- Add a new queuing discipline for IETF RFC9332 DualQ Coupled AQM.
- Add sequence numbers to netconsole messages. Unregister netconsole's
console when all net targets are removed. Code refactoring.
Add a number of selftests.
- Align IPSec inbound SA lookup to RFC 4301. Only SPI and protocol
should be used for an inbound SA lookup.
- Support inspecting ref_tracker state via DebugFS.
- Don't force bonding advertisement frames tx to ~333 ms boundaries.
Add broadcast_neighbor option to send ARP/ND on all bonded links.
- Allow providing upcall pid for the 'execute' command in openvswitch.
- Remove DCCP support from Netfilter's conntrack.
- Disallow multiple packet duplications in the queuing layer.
- Prevent use of deprecated iptables code on PREEMPT_RT.
Driver API
----------
- Support RSS and hashing configuration over ethtool Netlink.
- Add dedicated ethtool callbacks for getting and setting hashing fields.
- Add support for power budget evaluation strategy in PSE /
Power-over-Ethernet. Generate Netlink events for overcurrent etc.
- Support DPLL phase offset monitoring across all device inputs.
Support providing clock reference and SYNC over separate DPLL
inputs.
- Support traffic classes in devlink rate API for bandwidth management.
- Remove rtnl_lock dependency from UDP tunnel port configuration.
Device drivers
--------------
- Add a new Broadcom driver for 800G Ethernet (bnge).
- Add a standalone driver for Microchip ZL3073x DPLL.
- Remove IBM's NETIUCV device driver.
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- support zero-copy Tx of DMABUF memory
- take page size into account for page pool recycling rings
- Intel (100G, ice, idpf):
- idpf: XDP and AF_XDP support preparations
- idpf: add flow steering
- add link_down_events statistic
- clean up the TSPLL code
- preparations for live VM migration
- nVidia/Mellanox:
- support zero-copy Rx/Tx interfaces (DMABUF and io_uring)
- optimize context memory usage for matchers
- expose serial numbers in devlink info
- support PCIe congestion metrics
- Meta (fbnic):
- add 25G, 50G, and 100G link modes to phylink
- support dumping FW logs
- Marvell/Cavium:
- support for CN20K generation of the Octeon chips
- Amazon:
- add HW clock (without timestamping, just hypervisor time access)
- Ethernet virtual:
- VirtIO net:
- support segmentation of UDP-tunnel-encapsulated packets
- Google (gve):
- support packet timestamping and clock synchronization
- Microsoft vNIC:
- add handler for device-originated servicing events
- allow dynamic MSI-X vector allocation
- support Tx bandwidth clamping
- Ethernet NICs consumer, and embedded:
- AMD:
- amd-xgbe: hardware timestamping and PTP clock support
- Broadcom integrated MACs (bcmgenet, bcmasp):
- use napi_complete_done() return value to support NAPI polling
- add support for re-starting auto-negotiation
- Broadcom switches (b53):
- support BCM5325 switches
- add bcm63xx EPHY power control
- Synopsys (stmmac):
- lots of code refactoring and cleanups
- TI:
- icssg-prueth: read firmware-names from device tree
- icssg: PRP offload support
- Microchip:
- lan78xx: convert to PHYLINK for improved PHY and MAC management
- ksz: add KSZ8463 switch support
- Intel:
- support similar queue priority scheme in multi-queue and
time-sensitive networking (taprio)
- support packet pre-emption in both
- RealTek (r8169):
- enable EEE at 5Gbps on RTL8126
- Airoha:
- add PPPoE offload support
- MDIO bus controller for Airoha AN7583
- Ethernet PHYs:
- support for the IPQ5018 internal GE PHY
- micrel KSZ9477 switch-integrated PHYs:
- add MDI/MDI-X control support
- add RX error counters
- add cable test support
- add Signal Quality Indicator (SQI) reporting
- dp83tg720: improve reset handling and reduce link recovery time
- support bcm54811 (and its MII-Lite interface type)
- air_en8811h: support resume/suspend
- support PHY counters for QCA807x and QCA808x
- support WoL for QCA807x
- CAN drivers:
- rcar_canfd: support for Transceiver Delay Compensation
- kvaser: report FW versions via devlink dev info
- WiFi:
- extended regulatory info support (6 GHz)
- add statistics and beacon monitor for Multi-Link Operation (MLO)
- support S1G aggregation, improve S1G support
- add Radio Measurement action fields
- support per-radio RTS threshold
- some work around how FIPS affects wifi, which was wrong (RC4 is used
by TKIP, not only WEP)
- improvements for unsolicited probe response handling
- WiFi drivers:
- RealTek (rtw88):
- IBSS mode for SDIO devices
- RealTek (rtw89):
- BT coexistence for MLO/WiFi7
- concurrent station + P2P support
- support for USB devices RTL8851BU/RTL8852BU
- Intel (iwlwifi):
- use embedded PNVM in (to be released) FW images to fix
compatibility issues
- many cleanups (unused FW APIs, PCIe code, WoWLAN)
- some FIPS interoperability
- MediaTek (mt76):
- firmware recovery improvements
- more MLO work
- Qualcomm/Atheros (ath12k):
- fix scan on multi-radio devices
- more EHT/Wi-Fi 7 features
- encapsulation/decapsulation offload
- Broadcom (brcm80211):
- support SDIO 43751 device
- Bluetooth:
- hci_event: add support for handling LE BIG Sync Lost event
- ISO: add socket option to report packet seqnum via CMSG
- ISO: support SCM_TIMESTAMPING for ISO TS
- Bluetooth drivers:
- intel_pcie: support Function Level Reset
- nxpuart: add support for 4M baudrate
- nxpuart: implement powerup sequence, reset, FW dump, and FW loading
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Wrap datapath globals into net_aligned_data, to avoid false sharing
- Preserve MSG_ZEROCOPY in forwarding (e.g. out of a container)
- Add SO_INQ and SCM_INQ support to AF_UNIX
- Add SIOCINQ support to AF_VSOCK
- Add TCP_MAXSEG sockopt to MPTCP
- Add IPv6 force_forwarding sysctl to enable forwarding per interface
- Make TCP validation of whether packet fully fits in the receive
window and the rcv_buf more strict. With increased use of HW
aggregation a single "packet" can be multiple 100s of kB
- Add MSG_MORE flag to optimize large TCP transmissions via sockmap,
improves latency up to 33% for sockmap users
- Convert TCP send queue handling from tasklet to BH workque
- Improve BPF iteration over TCP sockets to see each socket exactly
once
- Remove obsolete and unused TCP RFC3517/RFC6675 loss recovery code
- Support enabling kernel threads for NAPI processing on per-NAPI
instance basis rather than a whole device. Fully stop the kernel
NAPI thread when threaded NAPI gets disabled. Previously thread
would stick around until ifdown due to tricky synchronization
- Allow multicast routing to take effect on locally-generated packets
- Add output interface argument for End.X in segment routing
- MCTP: add support for gateway routing, improve bind() handling
- Don't require rtnl_lock when fetching an IPv6 neighbor over Netlink
- Add a new neighbor flag ("extern_valid"), which cedes refresh
responsibilities to userspace. This is needed for EVPN multi-homing
where a neighbor entry for a multi-homed host needs to be synced
across all the VTEPs among which the host is multi-homed
- Support NUD_PERMANENT for proxy neighbor entries
- Add a new queuing discipline for IETF RFC9332 DualQ Coupled AQM
- Add sequence numbers to netconsole messages. Unregister
netconsole's console when all net targets are removed. Code
refactoring. Add a number of selftests
- Align IPSec inbound SA lookup to RFC 4301. Only SPI and protocol
should be used for an inbound SA lookup
- Support inspecting ref_tracker state via DebugFS
- Don't force bonding advertisement frames tx to ~333 ms boundaries.
Add broadcast_neighbor option to send ARP/ND on all bonded links
- Allow providing upcall pid for the 'execute' command in openvswitch
- Remove DCCP support from Netfilter's conntrack
- Disallow multiple packet duplications in the queuing layer
- Prevent use of deprecated iptables code on PREEMPT_RT
Driver API:
- Support RSS and hashing configuration over ethtool Netlink
- Add dedicated ethtool callbacks for getting and setting hashing
fields
- Add support for power budget evaluation strategy in PSE /
Power-over-Ethernet. Generate Netlink events for overcurrent etc
- Support DPLL phase offset monitoring across all device inputs.
Support providing clock reference and SYNC over separate DPLL
inputs
- Support traffic classes in devlink rate API for bandwidth
management
- Remove rtnl_lock dependency from UDP tunnel port configuration
Device drivers:
- Add a new Broadcom driver for 800G Ethernet (bnge)
- Add a standalone driver for Microchip ZL3073x DPLL
- Remove IBM's NETIUCV device driver
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- support zero-copy Tx of DMABUF memory
- take page size into account for page pool recycling rings
- Intel (100G, ice, idpf):
- idpf: XDP and AF_XDP support preparations
- idpf: add flow steering
- add link_down_events statistic
- clean up the TSPLL code
- preparations for live VM migration
- nVidia/Mellanox:
- support zero-copy Rx/Tx interfaces (DMABUF and io_uring)
- optimize context memory usage for matchers
- expose serial numbers in devlink info
- support PCIe congestion metrics
- Meta (fbnic):
- add 25G, 50G, and 100G link modes to phylink
- support dumping FW logs
- Marvell/Cavium:
- support for CN20K generation of the Octeon chips
- Amazon:
- add HW clock (without timestamping, just hypervisor time access)
- Ethernet virtual:
- VirtIO net:
- support segmentation of UDP-tunnel-encapsulated packets
- Google (gve):
- support packet timestamping and clock synchronization
- Microsoft vNIC:
- add handler for device-originated servicing events
- allow dynamic MSI-X vector allocation
- support Tx bandwidth clamping
- Ethernet NICs consumer, and embedded:
- AMD:
- amd-xgbe: hardware timestamping and PTP clock support
- Broadcom integrated MACs (bcmgenet, bcmasp):
- use napi_complete_done() return value to support NAPI polling
- add support for re-starting auto-negotiation
- Broadcom switches (b53):
- support BCM5325 switches
- add bcm63xx EPHY power control
- Synopsys (stmmac):
- lots of code refactoring and cleanups
- TI:
- icssg-prueth: read firmware-names from device tree
- icssg: PRP offload support
- Microchip:
- lan78xx: convert to PHYLINK for improved PHY and MAC management
- ksz: add KSZ8463 switch support
- Intel:
- support similar queue priority scheme in multi-queue and
time-sensitive networking (taprio)
- support packet pre-emption in both
- RealTek (r8169):
- enable EEE at 5Gbps on RTL8126
- Airoha:
- add PPPoE offload support
- MDIO bus controller for Airoha AN7583
- Ethernet PHYs:
- support for the IPQ5018 internal GE PHY
- micrel KSZ9477 switch-integrated PHYs:
- add MDI/MDI-X control support
- add RX error counters
- add cable test support
- add Signal Quality Indicator (SQI) reporting
- dp83tg720: improve reset handling and reduce link recovery time
- support bcm54811 (and its MII-Lite interface type)
- air_en8811h: support resume/suspend
- support PHY counters for QCA807x and QCA808x
- support WoL for QCA807x
- CAN drivers:
- rcar_canfd: support for Transceiver Delay Compensation
- kvaser: report FW versions via devlink dev info
- WiFi:
- extended regulatory info support (6 GHz)
- add statistics and beacon monitor for Multi-Link Operation (MLO)
- support S1G aggregation, improve S1G support
- add Radio Measurement action fields
- support per-radio RTS threshold
- some work around how FIPS affects wifi, which was wrong (RC4 is
used by TKIP, not only WEP)
- improvements for unsolicited probe response handling
- WiFi drivers:
- RealTek (rtw88):
- IBSS mode for SDIO devices
- RealTek (rtw89):
- BT coexistence for MLO/WiFi7
- concurrent station + P2P support
- support for USB devices RTL8851BU/RTL8852BU
- Intel (iwlwifi):
- use embedded PNVM in (to be released) FW images to fix
compatibility issues
- many cleanups (unused FW APIs, PCIe code, WoWLAN)
- some FIPS interoperability
- MediaTek (mt76):
- firmware recovery improvements
- more MLO work
- Qualcomm/Atheros (ath12k):
- fix scan on multi-radio devices
- more EHT/Wi-Fi 7 features
- encapsulation/decapsulation offload
- Broadcom (brcm80211):
- support SDIO 43751 device
- Bluetooth:
- hci_event: add support for handling LE BIG Sync Lost event
- ISO: add socket option to report packet seqnum via CMSG
- ISO: support SCM_TIMESTAMPING for ISO TS
- Bluetooth drivers:
- intel_pcie: support Function Level Reset
- nxpuart: add support for 4M baudrate
- nxpuart: implement powerup sequence, reset, FW dump, and FW loading"
* tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1742 commits)
dpll: zl3073x: Fix build failure
selftests: bpf: fix legacy netfilter options
ipv6: annotate data-races around rt->fib6_nsiblings
ipv6: fix possible infinite loop in fib6_info_uses_dev()
ipv6: prevent infinite loop in rt6_nlmsg_size()
ipv6: add a retry logic in net6_rt_notify()
vrf: Drop existing dst reference in vrf_ip6_input_dst
net/sched: taprio: align entry index attr validation with mqprio
net: fsl_pq_mdio: use dev_err_probe
selftests: rtnetlink.sh: remove esp4_offload after test
vsock: remove unnecessary null check in vsock_getname()
igb: xsk: solve negative overflow of nb_pkts in zerocopy mode
stmmac: xsk: fix negative overflow of budget in zerocopy mode
dt-bindings: ieee802154: Convert at86rf230.txt yaml format
net: dsa: microchip: Disable PTP function of KSZ8463
net: dsa: microchip: Setup fiber ports for KSZ8463
net: dsa: microchip: Write switch MAC address differently for KSZ8463
net: dsa: microchip: Use different registers for KSZ8463
net: dsa: microchip: Add KSZ8463 switch support to KSZ DSA driver
dt-bindings: net: dsa: microchip: Add KSZ8463 switch support
...
|
||
|
Linus Torvalds
|
4b290aae78 |
Summary
* Move sysctls out of the kern_table array
This is the final move of ctl_tables into their respective subsystems. Only 5
(out of the original 50) will remain in kernel/sysctl.c file; these handle
either sysctl or common arch variables.
By decentralizing sysctl registrations, subsystem maintainers regain control
over their sysctl interfaces, improving maintainability and reducing the
likelihood of merge conflicts.
* docs: Remove false positives from check-sysctl-docs
Stopped falsely identifying sysctls as undocumented or unimplemented in the
check-sysctl-docs script. This script can now be used to automatically
identify if documentation is missing.
* Testing
All these have been in linux-next since rc3, giving them a solid 3 to 4 weeks
worth of testing. Additionally, sysctl selftests and kunit were also run
locally on my x86_64
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Merge tag 'sysctl-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl
Pull sysctl updates from Joel Granados:
- Move sysctls out of the kern_table array
This is the final move of ctl_tables into their respective
subsystems. Only 5 (out of the original 50) will remain in
kernel/sysctl.c file; these handle either sysctl or common arch
variables.
By decentralizing sysctl registrations, subsystem maintainers regain
control over their sysctl interfaces, improving maintainability and
reducing the likelihood of merge conflicts.
- docs: Remove false positives from check-sysctl-docs
Stopped falsely identifying sysctls as undocumented or unimplemented
in the check-sysctl-docs script. This script can now be used to
automatically identify if documentation is missing.
* tag 'sysctl-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl: (23 commits)
docs: Downgrade arm64 & riscv from titles to comment
docs: Replace spaces with tabs in check-sysctl-docs
docs: Remove colon from ctltable title in vm.rst
docs: Add awk section for ucount sysctl entries
docs: Use skiplist when checking sysctl admin-guide
docs: nixify check-sysctl-docs
sysctl: rename kern_table -> sysctl_subsys_table
kernel/sys.c: Move overflow{uid,gid} sysctl into kernel/sys.c
uevent: mv uevent_helper into kobject_uevent.c
sysctl: Removed unused variable
sysctl: Nixify sysctl.sh
sysctl: Remove superfluous includes from kernel/sysctl.c
sysctl: Remove (very) old file changelog
sysctl: Move sysctl_panic_on_stackoverflow to kernel/panic.c
sysctl: move cad_pid into kernel/pid.c
sysctl: Move tainted ctl_table into kernel/panic.c
Input: sysrq: mv sysrq into drivers/tty/sysrq.c
fork: mv threads-max into kernel/fork.c
parisc/power: Move soft-power into power.c
mm: move randomize_va_space into memory.c
...
|
||
|
Linus Torvalds
|
bc46b7cbc5 |
s390 updates for 6.17 merge window
- Standardize on the __ASSEMBLER__ macro that is provided by GCC and Clang compilers and replace __ASSEMBLY__ with __ASSEMBLER__ in both uapi and non-uapi headers - Explicitly include <linux/export.h> in architecture and driver files which contain an EXPORT_SYMBOL() and remove the include from the files which do not contain the EXPORT_SYMBOL() - Use the full title of "z/Architecture Principles of Operation" manual and the name of a section where facility bits are listed - Use -D__DISABLE_EXPORTS for files in arch/s390/boot to avoid unnecessary slowing down of the build and confusing external kABI tools that process symtypes data - Print additional unrecoverable machine check information to make the root cause analysis easier - Move cmpxchg_user_key() handling to uaccess library code, since the generated code is large anyway and there is no benefit if it is inlined - Fix a problem when cmpxchg_user_key() is executing a code with a non-default key: if a system is IPL-ed with "LOAD NORMAL", and the previous system used storage keys where the fetch-protection bit was set for some pages, and the cmpxchg_user_key() is located within such page, a protection exception happens - Either the external call or emergency signal order is used to send an IPI to a remote CPU. Use the external order only, since it is at least as good and sometimes even better, than the emergency signal - In case of an early crash the early program check handler prints more or less random value of the last breaking event address, since it is not initialized properly. Copy the last breaking event address from the lowcore to pt_regs to address this - During STP synchronization check udelay() can not be used, since the first CPU modifies tod_clock_base and get_tod_clock_monotonic() might return a non-monotonic time. Instead, busy-loop on other CPUs, while the the first CPU actually handles the synchronization operation - When debugging the early kernel boot using QEMU with the -S flag and GDB attached, skip the decompressor and start directly in kernel - Rename PAI Crypto event 4210 according to z16 and z17 "z/Architecture Principles of Operation" manual - Remove the in-kernel time steering support in favour of the new s390 PTP driver, which allows the kernel clock steered more precisely - Remove a possible false-positive warning in pte_free_defer(), which could be triggered in a valid case KVM guest process is initializing -----BEGIN PGP SIGNATURE----- iI0EABYKADUWIQQrtrZiYVkVzKQcYivNdxKlNrRb8AUCaIJQThccYWdvcmRlZXZA bGludXguaWJtLmNvbQAKCRDNdxKlNrRb8FI2APwPnlrj6ZVXzNA6dw0fSUt697rS NlaHEORXL8KcfoQh8QD/WwHUe1VNtDG1R5bBn0guR+UytVgR9Tt7LxyKfIgT3ws= =tdMb -----END PGP SIGNATURE----- Merge tag 's390-6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Alexander Gordeev: - Standardize on the __ASSEMBLER__ macro that is provided by GCC and Clang compilers and replace __ASSEMBLY__ with __ASSEMBLER__ in both uapi and non-uapi headers - Explicitly include <linux/export.h> in architecture and driver files which contain an EXPORT_SYMBOL() and remove the include from the files which do not contain the EXPORT_SYMBOL() - Use the full title of "z/Architecture Principles of Operation" manual and the name of a section where facility bits are listed - Use -D__DISABLE_EXPORTS for files in arch/s390/boot to avoid unnecessary slowing down of the build and confusing external kABI tools that process symtypes data - Print additional unrecoverable machine check information to make the root cause analysis easier - Move cmpxchg_user_key() handling to uaccess library code, since the generated code is large anyway and there is no benefit if it is inlined - Fix a problem when cmpxchg_user_key() is executing a code with a non-default key: if a system is IPL-ed with "LOAD NORMAL", and the previous system used storage keys where the fetch-protection bit was set for some pages, and the cmpxchg_user_key() is located within such page, a protection exception happens - Either the external call or emergency signal order is used to send an IPI to a remote CPU. Use the external order only, since it is at least as good and sometimes even better, than the emergency signal - In case of an early crash the early program check handler prints more or less random value of the last breaking event address, since it is not initialized properly. Copy the last breaking event address from the lowcore to pt_regs to address this - During STP synchronization check udelay() can not be used, since the first CPU modifies tod_clock_base and get_tod_clock_monotonic() might return a non-monotonic time. Instead, busy-loop on other CPUs, while the the first CPU actually handles the synchronization operation - When debugging the early kernel boot using QEMU with the -S flag and GDB attached, skip the decompressor and start directly in kernel - Rename PAI Crypto event 4210 according to z16 and z17 "z/Architecture Principles of Operation" manual - Remove the in-kernel time steering support in favour of the new s390 PTP driver, which allows the kernel clock steered more precisely - Remove a possible false-positive warning in pte_free_defer(), which could be triggered in a valid case KVM guest process is initializing * tag 's390-6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (29 commits) s390/mm: Remove possible false-positive warning in pte_free_defer() s390/stp: Default to enabled s390/stp: Remove leap second support s390/time: Remove in-kernel time steering s390/sclp: Use monotonic clock in sclp_sync_wait() s390/smp: Use monotonic clock in smp_emergency_stop() s390/time: Use monotonic clock in get_cycles() s390/pai_crypto: Rename PAI Crypto event 4210 scripts/gdb/symbols: make lx-symbols skip the s390 decompressor s390/boot: Introduce jump_to_kernel() function s390/stp: Remove udelay from stp_sync_clock() s390/early: Copy last breaking event address to pt_regs s390/smp: Remove conditional emergency signal order code usage s390/uaccess: Merge cmpxchg_user_key() inline assemblies s390/uaccess: Prevent kprobes on cmpxchg_user_key() functions s390/uaccess: Initialize code pages executed with non-default access key s390/skey: Provide infrastructure for executing with non-default access key s390/uaccess: Make cmpxchg_user_key() library code s390/page: Add memory clobber to page_set_storage_key() s390/page: Cleanup page_set_storage_key() inline assemblies ... |
||
|
Linus Torvalds
|
bf76f23aa1 |
Scheduler updates for v6.17:
Core scheduler changes:
- Better tracking of maximum lag of tasks in presence of different
slices duration, for better handling of lag in the fair
scheduler. (Vincent Guittot)
- Clean up and standardize #if/#else/#endif markers throughout
the entire scheduler code base (Ingo Molnar)
- Make SMP unconditional: build the SMP scheduler's
data structures and logic on UP kernel too, even though
they are not used, to simplify the scheduler and remove
around 200 #ifdef/[#else]/#endif blocks from the
scheduler. (Ingo Molnar)
- Reorganize cgroup bandwidth control interface handling
for better interfacing with sched_ext (Tejun Heo)
Balancing:
- Bump sd->max_newidle_lb_cost when newidle balance fails (Chris Mason)
- Remove sched_domain_topology_level::flags to simplify the code (Prateek Nayak)
- Simplify and clean up build_sched_topology() (Li Chen)
- Optimize build_sched_topology() on large machines (Li Chen)
Real-time scheduling:
- Add initial version of proxy execution: a mechanism for mutex-owning
tasks to inherit the scheduling context of higher priority waiters.
Currently limited to a single runqueue and conditional on CONFIG_EXPERT,
and other limitations. (John Stultz, Peter Zijlstra, Valentin Schneider)
- Deadline scheduler (Juri Lelli):
- Fix dl_servers initialization order (Juri Lelli)
- Fix DL scheduler's root domain reinitialization logic (Juri Lelli)
- Fix accounting bugs after global limits change (Juri Lelli)
- Fix scalability regression by implementing less agressive dl_server handling
(Peter Zijlstra)
PSI:
- Improve scalability by optimizing psi_group_change() cpu_clock() usage
(Peter Zijlstra)
Rust changes:
- Make Task, CondVar and PollCondVar methods inline to avoid unnecessary
function calls (Kunwu Chan, Panagiotis Foliadis)
- Add might_sleep() support for Rust code: Rust's "#[track_caller]"
mechanism is used so that Rust's might_sleep() doesn't need to be
defined as a macro (Fujita Tomonori)
- Introduce file_from_location() (Boqun Feng)
Debugging & instrumentation:
- Make clangd usable with scheduler source code files again (Peter Zijlstra)
- tools: Add root_domains_dump.py which dumps root domains info (Juri Lelli)
- tools: Add dl_bw_dump.py for printing bandwidth accounting info (Juri Lelli)
Misc cleanups & fixes:
- Remove play_idle() (Feng Lee)
- Fix check_preemption_disabled() (Sebastian Andrzej Siewior)
- Do not call __put_task_struct() on RT if pi_blocked_on is set
(Luis Claudio R. Goncalves)
- Correct the comment in place_entity() (wang wei)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2025-07-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Core scheduler changes:
- Better tracking of maximum lag of tasks in presence of different
slices duration, for better handling of lag in the fair scheduler
(Vincent Guittot)
- Clean up and standardize #if/#else/#endif markers throughout the
entire scheduler code base (Ingo Molnar)
- Make SMP unconditional: build the SMP scheduler's data structures
and logic on UP kernel too, even though they are not used, to
simplify the scheduler and remove around 200 #ifdef/[#else]/#endif
blocks from the scheduler (Ingo Molnar)
- Reorganize cgroup bandwidth control interface handling for better
interfacing with sched_ext (Tejun Heo)
Balancing:
- Bump sd->max_newidle_lb_cost when newidle balance fails (Chris
Mason)
- Remove sched_domain_topology_level::flags to simplify the code
(Prateek Nayak)
- Simplify and clean up build_sched_topology() (Li Chen)
- Optimize build_sched_topology() on large machines (Li Chen)
Real-time scheduling:
- Add initial version of proxy execution: a mechanism for
mutex-owning tasks to inherit the scheduling context of higher
priority waiters.
Currently limited to a single runqueue and conditional on
CONFIG_EXPERT, and other limitations (John Stultz, Peter Zijlstra,
Valentin Schneider)
- Deadline scheduler (Juri Lelli):
- Fix dl_servers initialization order (Juri Lelli)
- Fix DL scheduler's root domain reinitialization logic (Juri
Lelli)
- Fix accounting bugs after global limits change (Juri Lelli)
- Fix scalability regression by implementing less agressive
dl_server handling (Peter Zijlstra)
PSI:
- Improve scalability by optimizing psi_group_change() cpu_clock()
usage (Peter Zijlstra)
Rust changes:
- Make Task, CondVar and PollCondVar methods inline to avoid
unnecessary function calls (Kunwu Chan, Panagiotis Foliadis)
- Add might_sleep() support for Rust code: Rust's "#[track_caller]"
mechanism is used so that Rust's might_sleep() doesn't need to be
defined as a macro (Fujita Tomonori)
- Introduce file_from_location() (Boqun Feng)
Debugging & instrumentation:
- Make clangd usable with scheduler source code files again (Peter
Zijlstra)
- tools: Add root_domains_dump.py which dumps root domains info (Juri
Lelli)
- tools: Add dl_bw_dump.py for printing bandwidth accounting info
(Juri Lelli)
Misc cleanups & fixes:
- Remove play_idle() (Feng Lee)
- Fix check_preemption_disabled() (Sebastian Andrzej Siewior)
- Do not call __put_task_struct() on RT if pi_blocked_on is set (Luis
Claudio R. Goncalves)
- Correct the comment in place_entity() (wang wei)"
* tag 'sched-core-2025-07-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (84 commits)
sched/idle: Remove play_idle()
sched: Do not call __put_task_struct() on rt if pi_blocked_on is set
sched: Start blocked_on chain processing in find_proxy_task()
sched: Fix proxy/current (push,pull)ability
sched: Add an initial sketch of the find_proxy_task() function
sched: Fix runtime accounting w/ split exec & sched contexts
sched: Move update_curr_task logic into update_curr_se
locking/mutex: Add p->blocked_on wrappers for correctness checks
locking/mutex: Rework task_struct::blocked_on
sched: Add CONFIG_SCHED_PROXY_EXEC & boot argument to enable/disable
sched/topology: Remove sched_domain_topology_level::flags
x86/smpboot: avoid SMT domain attach/destroy if SMT is not enabled
x86/smpboot: moves x86_topology to static initialize and truncate
x86/smpboot: remove redundant CONFIG_SCHED_SMT
smpboot: introduce SDTL_INIT() helper to tidy sched topology setup
tools/sched: Add dl_bw_dump.py for printing bandwidth accounting info
tools/sched: Add root_domains_dump.py which dumps root domains info
sched/deadline: Fix accounting after global limits change
sched/deadline: Reset extra_bw to max_bw when clearing root domains
sched/deadline: Initialize dl_servers after SMP
...
|
||
|
Linus Torvalds
|
0561bd5692 |
lib/ratelimit: Add functional and stress tests
Changes ------- * Add trivial kunit test for ratelimit * Make the ratelimit test more reliable (Petr Mladek) * Add stress test for ratelimit -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmiBbmkTHHBhdWxtY2tA a2VybmVsLm9yZwAKCRCevxLzctn7jGDHD/wLrUvsUk494xhGudBd+uSy4JPtC3TZ s53I/IwUwmWUzPFW3kCwwDmq6LDVRg2I7kPh/6uAniMsOXF2watNrGloDu3ZJfqP Z3H5pXQDHi8Y/vzU/S/jUIjGqw9Zaop/3zVcNBdYH593Vnie8QTn6+SFtgBW93+J c0ScaazRrBBri8n/S5dC0wcjebQQjOeThGhOOeKIQHWauqNhLwqoRGKyNGNHVfux 2jQIRThv1vcVpjMQo5D3g6prZpI6XBQ3D3EkHOHjGChW6G89EEvtdUghlB56SG2d mK7CPUd7zI/QI/33p4wsbqffZUO5j0Tveoir8/Xw69YYpP1HVAU8g6B5Y6eqs7Gv 4s8r9XgCmwFDrl33Gkgm7JBPOqixTu3zk+MBAAeo8MKrox1hamms6pBI0KWUf9QW UOGEW4GfPc4VS7WRF9/JCTMpBZ9tBB7eTBYMy4hfrHBhsMKXfy7xHwK139PUu/JS W6O8BQnBfJ+ZOSq5oJpeV/hiyVrk/0nQfqjzMfA8zyF5IlGC8x5MiYXsFn61VJw2 k8WmfF//pU6O3NDwfJLmv2Oi5NY/0QuI597TxGm/Cw0Ns/qtTtQ/BEZZsQ0V2fxg bJoFRrxOBI3fw9UPzW5LGfNUcMG5VsxuQTgRglrul9+WQIsDkZqyRQD+FP2T7hfr IcXU+V5M4nryYw== =DDJ8 -----END PGP SIGNATURE----- Merge tag 'ratelimit.2025.07.23a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull ratelimit test updates from Paul McKenney: "Add functional and stress tests: - Add trivial kunit test for ratelimit - Make the ratelimit test more reliable (Petr Mladek) - Add stress test for ratelimit" * tag 'ratelimit.2025.07.23a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: lib: Add stress test for ratelimit lib: Make the ratelimit test more reliable lib: Add trivial kunit test for ratelimit |
||
|
Linus Torvalds
|
02dc9d15d7 |
Updates for the timekeeping and VDSO code:
- Introduce support for auxiliary timekeepers
PTP clocks can be disconnected from the universal CLOCK_TAI reality
for various reasons including regularatory requirements for
functional safety redundancy.
The kernel so far only supports a single notion of time, which means
that all clocks are correlated in frequency and only differ by
offset to each other.
Access to non-correlated PTP clocks has been available so far only
through the file descriptor based "POSIX clock IDs", which are
subject to locking and have to go all the way out to the hardware.
The access is not only horribly slow, as it has to go all the way out
to the NIC/PTP hardware, but that also prevents the kernel to read
the time of such clocks e.g. from the network stack, where it is
required for TSN networking both on the transmit and receive side
unless the hardware provides offloading.
The auxiliary clocks provide a mechanism to support arbitrary clocks
which are not correlated to the system clock. This is not restricted
to the PTP use case on purpose as there is no kernel side association
of these clocks to a particular PTP device because that's a pure user
space configuration decision. Having them independent allows to
utilize them for other purposes and also enables them to be tested
without hardware dependencies.
To avoid pointless overhead these clocks have to be enabled
individualy via a new sysfs interface to reduce the overhead to a
single compare in the hotpath if they are enabled at the Kconfig
level at all.
These clocks utilize the existing timekeeping/NTP infrastructures,
which has been made possible over the recent releases by incrementaly
converting these infrastructures over from a single static instance
to a multi-instance pointer based implementation without any
performance regression reported.
The auxiliary clocks provide the same "emulation" of a "correct"
clock as the existing CLOCK_* variants do with an independent
instance of data and provide the same steering mechanism through the
existing sys_clock_adjtime() interface, which has been confirmed to
work by the chronyd(8) maintainer.
That allows to provide lockless kernel internal and VDSO support so
that applications and kernel internal functionalities can access
these clocks without restrictions and at the same performance as the
existing system clocks.
- Avoid double notifications in the adjtimex() syscall. Not a big issue,
but a trivial to avoid latency source.
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Merge tag 'timers-ptp-2025-07-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timekeeping and VDSO updates from Thomas Gleixner:
- Introduce support for auxiliary timekeepers
PTP clocks can be disconnected from the universal CLOCK_TAI reality
for various reasons including regularatory requirements for
functional safety redundancy.
The kernel so far only supports a single notion of time, which means
that all clocks are correlated in frequency and only differ by offset
to each other.
Access to non-correlated PTP clocks has been available so far only
through the file descriptor based "POSIX clock IDs", which are
subject to locking and have to go all the way out to the hardware.
The access is not only horribly slow, as it has to go all the way out
to the NIC/PTP hardware, but that also prevents the kernel to read
the time of such clocks e.g. from the network stack, where it is
required for TSN networking both on the transmit and receive side
unless the hardware provides offloading.
The auxiliary clocks provide a mechanism to support arbitrary clocks
which are not correlated to the system clock. This is not restricted
to the PTP use case on purpose as there is no kernel side association
of these clocks to a particular PTP device because that's a pure user
space configuration decision. Having them independent allows to
utilize them for other purposes and also enables them to be tested
without hardware dependencies.
To avoid pointless overhead these clocks have to be enabled
individualy via a new sysfs interface to reduce the overhead to a
single compare in the hotpath if they are enabled at the Kconfig
level at all.
These clocks utilize the existing timekeeping/NTP infrastructures,
which has been made possible over the recent releases by incrementaly
converting these infrastructures over from a single static instance
to a multi-instance pointer based implementation without any
performance regression reported.
The auxiliary clocks provide the same "emulation" of a "correct"
clock as the existing CLOCK_* variants do with an independent
instance of data and provide the same steering mechanism through the
existing sys_clock_adjtime() interface, which has been confirmed to
work by the chronyd(8) maintainer.
That allows to provide lockless kernel internal and VDSO support so
that applications and kernel internal functionalities can access
these clocks without restrictions and at the same performance as the
existing system clocks.
- Avoid double notifications in the adjtimex() syscall. Not a big
issue, but a trivial to avoid latency source.
* tag 'timers-ptp-2025-07-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits)
vdso/gettimeofday: Add support for auxiliary clocks
vdso/vsyscall: Update auxiliary clock data in the datapage
vdso: Introduce aux_clock_resolution_ns()
vdso/gettimeofday: Introduce vdso_get_timestamp()
vdso/gettimeofday: Introduce vdso_set_timespec()
vdso/gettimeofday: Introduce vdso_clockid_valid()
vdso/gettimeofday: Return bool from clock_gettime() helpers
vdso/gettimeofday: Return bool from clock_getres() helpers
vdso/helpers: Add helpers for seqlocks of single vdso_clock
vdso/vsyscall: Split up __arch_update_vsyscall() into __arch_update_vdso_clock()
vdso/vsyscall: Introduce a helper to fill clock configurations
timekeeping: Remove the temporary CLOCK_AUX workaround
timekeeping: Provide ktime_get_clock_ts64()
timekeeping: Provide interface to control auxiliary clocks
timekeeping: Provide update for auxiliary timekeepers
timekeeping: Provide adjtimex() for auxiliary clocks
timekeeping: Prepare do_adtimex() for auxiliary clocks
timekeeping: Make do_adjtimex() reusable
timekeeping: Add auxiliary clock support to __timekeeping_inject_offset()
timekeeping: Make timekeeping_inject_offset() reusable
...
|
||
|
Linus Torvalds
|
6f46e6fb4e |
linux_kselftest-kunit-6.17-rc1
Corrects MODULE_IMPORT_NS() syntax documentation, makes kunit_test timeout
configurable via a module parameter and a Kconfig option, fixes longest
symbol length test, adds a test for static stub, and adjusts kunit_test
timeout based on test_{suite,case} speed.
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Merge tag 'linux_kselftest-kunit-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit updates from Shuah Khan:
"Correct MODULE_IMPORT_NS() syntax documentation, make kunit_test
timeout configurable via a module parameter and a Kconfig option, fix
longest symbol length test, add a test for static stub, and adjust
kunit_test timeout based on test_{suite,case} speed"
* tag 'linux_kselftest-kunit-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: fix longest symbol length test
kunit: Make default kunit_test timeout configurable via both a module parameter and a Kconfig option
kunit: Adjust kunit_test timeout based on test_{suite,case} speed
kunit: Add test for static stub
Documentation: kunit: Correct MODULE_IMPORT_NS() syntax
|
||
|
Linus Torvalds
|
0d5ec7919f |
Char / Misc / IIO / other driver updates for 6.17-rc1
Here is the big set of char/misc/iio and other smaller driver subsystems
for 6.17-rc1. It's a big set this time around, with the huge majority
being in the iio subsystem with new drivers and dts files being added
there.
Highlights include:
- IIO driver updates, additions, and changes making more code const
and cleaning up some init logic
- bus_type constant conversion changes
- misc device test functions added
- rust miscdevice minor fixup
- unused function removals for some drivers
- mei driver updates
- mhi driver updates
- interconnect driver updates
- Android binder updates and test infrastructure added
- small cdx driver updates
- small comedi fixes
- small nvmem driver updates
- small pps driver updates
- some acrn virt driver fixes for printk messages
- other small driver updates
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc / IIO / other driver updates from Greg KH:
"Here is the big set of char/misc/iio and other smaller driver
subsystems for 6.17-rc1. It's a big set this time around, with the
huge majority being in the iio subsystem with new drivers and dts
files being added there.
Highlights include:
- IIO driver updates, additions, and changes making more code const
and cleaning up some init logic
- bus_type constant conversion changes
- misc device test functions added
- rust miscdevice minor fixup
- unused function removals for some drivers
- mei driver updates
- mhi driver updates
- interconnect driver updates
- Android binder updates and test infrastructure added
- small cdx driver updates
- small comedi fixes
- small nvmem driver updates
- small pps driver updates
- some acrn virt driver fixes for printk messages
- other small driver updates
All of these have been in linux-next with no reported issues"
* tag 'char-misc-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (292 commits)
binder: Use seq_buf in binder_alloc kunit tests
binder: Add copyright notice to new kunit files
misc: ti_fpc202: Switch to of_fwnode_handle()
bus: moxtet: Use dev_fwnode()
pc104: move PC104 option to drivers/Kconfig
drivers: virt: acrn: Don't use %pK through printk
comedi: fix race between polling and detaching
interconnect: qcom: Add Milos interconnect provider driver
dt-bindings: interconnect: document the RPMh Network-On-Chip Interconnect in Qualcomm Milos SoC
mei: more prints with client prefix
mei: bus: use cldev in prints
bus: mhi: host: pci_generic: Add Telit FN990B40 modem support
bus: mhi: host: Detect events pointing to unexpected TREs
bus: mhi: host: pci_generic: Add Foxconn T99W696 modem
bus: mhi: host: Use str_true_false() helper
bus: mhi: host: pci_generic: Add support for EM929x and set MRU to 32768 for better performance.
bus: mhi: host: Fix endianness of BHI vector table
bus: mhi: host: pci_generic: Disable runtime PM for QDU100
bus: mhi: host: pci_generic: Fix the modem name of Foxconn T99W640
dt-bindings: interconnect: qcom,msm8998-bwmon: Allow 'nonposted-mmio'
...
|
||
|
Linus Torvalds
|
f2f573ebd4 |
Crypto library tests for 6.17
Add KUnit test suites for the Poly1305, SHA-1, SHA-224, SHA-256, SHA-384, and SHA-512 library functions. These are the first KUnit tests for lib/crypto/. So in addition to being useful tests for these specific algorithms, they also establish some conventions for lib/crypto/ testing going forwards. The new tests are fairly comprehensive: more comprehensive than the generic crypto infrastructure's tests. They use a variety of techniques to check for the types of implementation bugs that tend to occur in the real world, rather than just naively checking some test vectors. (Interestingly, poly1305_kunit found a bug in QEMU.) The core test logic is shared by all six algorithms, rather than being duplicated for each algorithm. Each algorithm's test suite also optionally includes a benchmark. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQSacvsUNc7UX4ntmEPzXCl4vpKOKwUCaIZ+WhQcZWJpZ2dlcnNA a2VybmVsLm9yZwAKCRDzXCl4vpKOK+C4AQCOi7iOlFLouUfu9klrovp3i/iSMhyQ gUEHPGSelBy4wQD+NnrLGIdpCcaDAzyWpT4TxG6esN2/97ewh4VUa2MDuQQ= =rS0F -----END PGP SIGNATURE----- Merge tag 'libcrypto-tests-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux Pull crypto library test updates from Eric Biggers: "Add KUnit test suites for the Poly1305, SHA-1, SHA-224, SHA-256, SHA-384, and SHA-512 library functions. These are the first KUnit tests for lib/crypto/. So in addition to being useful tests for these specific algorithms, they also establish some conventions for lib/crypto/ testing going forwards. The new tests are fairly comprehensive: more comprehensive than the generic crypto infrastructure's tests. They use a variety of techniques to check for the types of implementation bugs that tend to occur in the real world, rather than just naively checking some test vectors. (Interestingly, poly1305_kunit found a bug in QEMU) The core test logic is shared by all six algorithms, rather than being duplicated for each algorithm. Each algorithm's test suite also optionally includes a benchmark" * tag 'libcrypto-tests-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: lib/crypto: tests: Annotate worker to be on stack lib/crypto: tests: Add KUnit tests for SHA-1 and HMAC-SHA1 lib/crypto: tests: Add KUnit tests for Poly1305 lib/crypto: tests: Add KUnit tests for SHA-384 and SHA-512 lib/crypto: tests: Add KUnit tests for SHA-224 and SHA-256 lib/crypto: tests: Add hash-test-template.h and gen-hash-testvecs.py |
||
|
Linus Torvalds
|
13150742b0 |
Crypto library updates for 6.17
This is the main crypto library pull request for 6.17. The main focus
this cycle is on reorganizing the SHA-1 and SHA-2 code, providing
high-quality library APIs for SHA-1 and SHA-2 including HMAC support,
and establishing conventions for lib/crypto/ going forward:
- Migrate the SHA-1 and SHA-512 code (and also SHA-384 which shares
most of the SHA-512 code) into lib/crypto/. This includes both the
generic and architecture-optimized code. Greatly simplify how the
architecture-optimized code is integrated. Add an easy-to-use
library API for each SHA variant, including HMAC support. Finally,
reimplement the crypto_shash support on top of the library API.
- Apply the same reorganization to the SHA-256 code (and also SHA-224
which shares most of the SHA-256 code). This is a somewhat smaller
change, due to my earlier work on SHA-256. But this brings in all
the same additional improvements that I made for SHA-1 and SHA-512.
There are also some smaller changes:
- Move the architecture-optimized ChaCha, Poly1305, and BLAKE2s code
from arch/$(SRCARCH)/lib/crypto/ to lib/crypto/$(SRCARCH)/. For
these algorithms it's just a move, not a full reorganization yet.
- Fix the MIPS chacha-core.S to build with the clang assembler.
- Fix the Poly1305 functions to work in all contexts.
- Fix a performance regression in the x86_64 Poly1305 code.
- Clean up the x86_64 SHA-NI optimized SHA-1 assembly code.
Note that since the new organization of the SHA code is much simpler,
the diffstat of this pull request is negative, despite the addition of
new fully-documented library APIs for multiple SHA and HMAC-SHA
variants. These APIs will allow further simplifications across the
kernel as users start using them instead of the old-school crypto API.
(I've already written a lot of such conversion patches, removing over
1000 more lines of code. But most of those will target 6.18 or later.)
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Merge tag 'libcrypto-updates-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull crypto library updates from Eric Biggers:
"This is the main crypto library pull request for 6.17. The main focus
this cycle is on reorganizing the SHA-1 and SHA-2 code, providing
high-quality library APIs for SHA-1 and SHA-2 including HMAC support,
and establishing conventions for lib/crypto/ going forward:
- Migrate the SHA-1 and SHA-512 code (and also SHA-384 which shares
most of the SHA-512 code) into lib/crypto/. This includes both the
generic and architecture-optimized code. Greatly simplify how the
architecture-optimized code is integrated. Add an easy-to-use
library API for each SHA variant, including HMAC support. Finally,
reimplement the crypto_shash support on top of the library API.
- Apply the same reorganization to the SHA-256 code (and also SHA-224
which shares most of the SHA-256 code). This is a somewhat smaller
change, due to my earlier work on SHA-256. But this brings in all
the same additional improvements that I made for SHA-1 and SHA-512.
There are also some smaller changes:
- Move the architecture-optimized ChaCha, Poly1305, and BLAKE2s code
from arch/$(SRCARCH)/lib/crypto/ to lib/crypto/$(SRCARCH)/. For
these algorithms it's just a move, not a full reorganization yet.
- Fix the MIPS chacha-core.S to build with the clang assembler.
- Fix the Poly1305 functions to work in all contexts.
- Fix a performance regression in the x86_64 Poly1305 code.
- Clean up the x86_64 SHA-NI optimized SHA-1 assembly code.
Note that since the new organization of the SHA code is much simpler,
the diffstat of this pull request is negative, despite the addition of
new fully-documented library APIs for multiple SHA and HMAC-SHA
variants.
These APIs will allow further simplifications across the kernel as
users start using them instead of the old-school crypto API. (I've
already written a lot of such conversion patches, removing over 1000
more lines of code. But most of those will target 6.18 or later)"
* tag 'libcrypto-updates-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (67 commits)
lib/crypto: arm64/sha512-ce: Drop compatibility macros for older binutils
lib/crypto: x86/sha1-ni: Convert to use rounds macros
lib/crypto: x86/sha1-ni: Minor optimizations and cleanup
crypto: sha1 - Remove sha1_base.h
lib/crypto: x86/sha1: Migrate optimized code into library
lib/crypto: sparc/sha1: Migrate optimized code into library
lib/crypto: s390/sha1: Migrate optimized code into library
lib/crypto: powerpc/sha1: Migrate optimized code into library
lib/crypto: mips/sha1: Migrate optimized code into library
lib/crypto: arm64/sha1: Migrate optimized code into library
lib/crypto: arm/sha1: Migrate optimized code into library
crypto: sha1 - Use same state format as legacy drivers
crypto: sha1 - Wrap library and add HMAC support
lib/crypto: sha1: Add HMAC support
lib/crypto: sha1: Add SHA-1 library functions
lib/crypto: sha1: Rename sha1_init() to sha1_init_raw()
crypto: x86/sha1 - Rename conflicting symbol
lib/crypto: sha2: Add hmac_sha*_init_usingrawkey()
lib/crypto: arm/poly1305: Remove unneeded empty weak function
lib/crypto: x86/poly1305: Fix performance regression on short messages
...
|
||
|
Linus Torvalds
|
a578dd095d |
CRC updates for 6.17
Updates for the kernel's CRC (cyclic redundancy check) code:
- Reorganize the architecture-optimized CRC code. It now lives in
lib/crc/$(SRCARCH)/ rather than arch/$(SRCARCH)/lib/, and it is no
longer artificially split into separate generic and arch modules.
This allows better inlining and dead code elimination. The generic
CRC code is also no longer exported, simplifying the API. (This
mirrors the similar changes to SHA-1 and SHA-2 in lib/crypto/,
which can be found in the "Crypto library updates" pull request.)
- Improve crc32c() performance on newer x86_64 CPUs on long messages
by enabling the VPCLMULQDQ optimized code.
- Simplify the crypto_shash wrappers for crc32_le() and crc32c().
Register just one shash algorithm for each that uses the (fully
optimized) library functions, instead of unnecessarily providing
direct access to the generic CRC code.
- Remove unused and obsolete drivers for hardware CRC engines.
- Remove CRC-32 combination functions that are no longer used.
- Add kerneldoc for crc32_le(), crc32_be(), and crc32c().
- Convert the crc32() macro to an inline function.
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Merge tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull CRC updates from Eric Biggers:
- Reorganize the architecture-optimized CRC code
It now lives in lib/crc/$(SRCARCH)/ rather than arch/$(SRCARCH)/lib/,
and it is no longer artificially split into separate generic and arch
modules. This allows better inlining and dead code elimination
The generic CRC code is also no longer exported, simplifying the API.
(This mirrors the similar changes to SHA-1 and SHA-2 in lib/crypto/,
which can be found in the "Crypto library updates" pull request)
- Improve crc32c() performance on newer x86_64 CPUs on long messages by
enabling the VPCLMULQDQ optimized code
- Simplify the crypto_shash wrappers for crc32_le() and crc32c()
Register just one shash algorithm for each that uses the (fully
optimized) library functions, instead of unnecessarily providing
direct access to the generic CRC code
- Remove unused and obsolete drivers for hardware CRC engines
- Remove CRC-32 combination functions that are no longer used
- Add kerneldoc for crc32_le(), crc32_be(), and crc32c()
- Convert the crc32() macro to an inline function
* tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (26 commits)
lib/crc: x86/crc32c: Enable VPCLMULQDQ optimization where beneficial
lib/crc: x86: Reorganize crc-pclmul static_call initialization
lib/crc: crc64: Add include/linux/crc64.h to kernel-api.rst
lib/crc: crc32: Change crc32() from macro to inline function and remove cast
nvmem: layouts: Switch from crc32() to crc32_le()
lib/crc: crc32: Document crc32_le(), crc32_be(), and crc32c()
lib/crc: Explicitly include <linux/export.h>
lib/crc: Remove ARCH_HAS_* kconfig symbols
lib/crc: x86: Migrate optimized CRC code into lib/crc/
lib/crc: sparc: Migrate optimized CRC code into lib/crc/
lib/crc: s390: Migrate optimized CRC code into lib/crc/
lib/crc: riscv: Migrate optimized CRC code into lib/crc/
lib/crc: powerpc: Migrate optimized CRC code into lib/crc/
lib/crc: mips: Migrate optimized CRC code into lib/crc/
lib/crc: loongarch: Migrate optimized CRC code into lib/crc/
lib/crc: arm64: Migrate optimized CRC code into lib/crc/
lib/crc: arm: Migrate optimized CRC code into lib/crc/
lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/
lib/crc: Move files into lib/crc/
lib/crc32: Remove unused combination support
...
|
||
|
Linus Torvalds
|
8e736a2eea |
hardening updates for v6.17-rc1
- Introduce and start using TRAILING_OVERLAP() helper for fixing embedded flex array instances (Gustavo A. R. Silva) - mux: Convert mux_control_ops to a flex array member in mux_chip (Thorsten Blum) - string: Group str_has_prefix() and strstarts() (Andy Shevchenko) - Remove KCOV instrumentation from __init and __head (Ritesh Harjani, Kees Cook) - Refactor and rename stackleak feature to support Clang - Add KUnit test for seq_buf API - Fix KUnit fortify test under LTO -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRSPkdeREjth1dHnSE2KwveOeQkuwUCaIfUkgAKCRA2KwveOeQk uypLAP92r6f47sWcOw/5B9aVffX6Bypsb7dqBJQpCNxI5U1xcAEAiCrZ98UJyOeQ JQgnXd4N67K4EsS2JDc+FutRn3Yi+A8= =+5Bq -----END PGP SIGNATURE----- Merge tag 'hardening-v6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening updates from Kees Cook: - Introduce and start using TRAILING_OVERLAP() helper for fixing embedded flex array instances (Gustavo A. R. Silva) - mux: Convert mux_control_ops to a flex array member in mux_chip (Thorsten Blum) - string: Group str_has_prefix() and strstarts() (Andy Shevchenko) - Remove KCOV instrumentation from __init and __head (Ritesh Harjani, Kees Cook) - Refactor and rename stackleak feature to support Clang - Add KUnit test for seq_buf API - Fix KUnit fortify test under LTO * tag 'hardening-v6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (22 commits) sched/task_stack: Add missing const qualifier to end_of_stack() kstack_erase: Support Clang stack depth tracking kstack_erase: Add -mgeneral-regs-only to silence Clang warnings init.h: Disable sanitizer coverage for __init and __head kstack_erase: Disable kstack_erase for all of arm compressed boot code x86: Handle KCOV __init vs inline mismatches arm64: Handle KCOV __init vs inline mismatches s390: Handle KCOV __init vs inline mismatches arm: Handle KCOV __init vs inline mismatches mips: Handle KCOV __init vs inline mismatch powerpc/mm/book3s64: Move kfence and debug_pagealloc related calls to __init section configs/hardening: Enable CONFIG_INIT_ON_FREE_DEFAULT_ON configs/hardening: Enable CONFIG_KSTACK_ERASE stackleak: Split KSTACK_ERASE_CFLAGS from GCC_PLUGINS_CFLAGS stackleak: Rename stackleak_track_stack to __sanitizer_cov_stack_depth stackleak: Rename STACKLEAK to KSTACK_ERASE seq_buf: Introduce KUnit tests string: Group str_has_prefix() and strstarts() kunit/fortify: Add back "volatile" for sizeof() constants acpi: nfit: intel: avoid multiple -Wflex-array-member-not-at-end warnings ... |
||
|
Linus Torvalds
|
6e11664f14 |
for-6.17/block-20250728
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Merge tag 'for-6.17/block-20250728' of git://git.kernel.dk/linux
Pull block updates from Jens Axboe:
- MD pull request via Yu:
- call del_gendisk synchronously (Xiao)
- cleanup unused variable (John)
- cleanup workqueue flags (Ryo)
- fix faulty rdev can't be removed during resync (Qixing)
- NVMe pull request via Christoph:
- try PCIe function level reset on init failure (Keith Busch)
- log TLS handshake failures at error level (Maurizio Lombardi)
- pci-epf: do not complete commands twice if nvmet_req_init()
fails (Rick Wertenbroek)
- misc cleanups (Alok Tiwari)
- Removal of the pktcdvd driver
This has been more than a decade coming at this point, and some
recently revealed breakages that had it causing issues even for cases
where it isn't required made me re-pull the trigger on this one. It's
known broken and nobody has stepped up to maintain the code
- Series for ublk supporting batch commands, enabling the use of
multishot where appropriate
- Speed up ublk exit handling
- Fix for the two-stage elevator fixing which could leak data
- Convert NVMe to use the new IOVA based API
- Increase default max transfer size to something more reasonable
- Series fixing write operations on zoned DM devices
- Add tracepoints for zoned block device operations
- Prep series working towards improving blk-mq queue management in the
presence of isolated CPUs
- Don't allow updating of the block size of a loop device that is
currently under exclusively ownership/open
- Set chunk sectors from stacked device stripe size and use it for the
atomic write size limit
- Switch to folios in bcache read_super()
- Fix for CD-ROM MRW exit flush handling
- Various tweaks, fixes, and cleanups
* tag 'for-6.17/block-20250728' of git://git.kernel.dk/linux: (94 commits)
block: restore two stage elevator switch while running nr_hw_queue update
cdrom: Call cdrom_mrw_exit from cdrom_release function
sunvdc: Balance device refcount in vdc_port_mpgroup_check
nvme-pci: try function level reset on init failure
dm: split write BIOs on zone boundaries when zone append is not emulated
block: use chunk_sectors when evaluating stacked atomic write limits
dm-stripe: limit chunk_sectors to the stripe size
md/raid10: set chunk_sectors limit
md/raid0: set chunk_sectors limit
block: sanitize chunk_sectors for atomic write limits
ilog2: add max_pow_of_two_factor()
nvmet: pci-epf: Do not complete commands twice if nvmet_req_init() fails
nvme-tcp: log TLS handshake failures at error level
docs: nvme: fix grammar in nvme-pci-endpoint-target.rst
nvme: fix typo in status code constant for self-test in progress
nvmet: remove redundant assignment of error code in nvmet_ns_enable()
nvme: fix incorrect variable in io cqes error message
nvme: fix multiple spelling and grammar issues in host drivers
block: fix blk_zone_append_update_request_bio() kernel-doc
md/raid10: fix set but not used variable in sync_request_write()
...
|
||
|
Joel Granados
|
88eddb0502 |
uevent: mv uevent_helper into kobject_uevent.c
Move both uevent_helper table into lib/kobject_uevent.c. Place the registration early in the initcall order with postcore_initcall. This is part of a greater effort to move ctl tables into their respective subsystems which will reduce the merge conflicts in kernel/sysctl.c. Signed-off-by: Joel Granados <joel.granados@kernel.org> |
||
|
Kees Cook
|
57fbad15c2 |
stackleak: Rename STACKLEAK to KSTACK_ERASE
In preparation for adding Clang sanitizer coverage stack depth tracking that can support stack depth callbacks: - Add the new top-level CONFIG_KSTACK_ERASE option which will be implemented either with the stackleak GCC plugin, or with the Clang stack depth callback support. - Rename CONFIG_GCC_PLUGIN_STACKLEAK as needed to CONFIG_KSTACK_ERASE, but keep it for anything specific to the GCC plugin itself. - Rename all exposed "STACKLEAK" names and files to "KSTACK_ERASE" (named for what it does rather than what it protects against), but leave as many of the internals alone as possible to avoid even more churn. While here, also split "prev_lowest_stack" into CONFIG_KSTACK_ERASE_METRICS, since that's the only place it is referenced from. Suggested-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20250717232519.2984886-1-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
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Guenter Roeck
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8cd876e783 |
lib/crypto: tests: Annotate worker to be on stack
The following warning traceback is seen if object debugging is enabled
with the new crypto test code.
ODEBUG: object 9000000106237c50 is on stack 9000000106234000, but NOT annotated.
------------[ cut here ]------------
WARNING: lib/debugobjects.c:655 at lookup_object_or_alloc.part.0+0x19c/0x1f4, CPU#0: kunit_try_catch/468
...
This also results in a boot stall when running the code in qemu:loongarch.
Initializing the worker with INIT_WORK_ONSTACK() fixes the problem.
Fixes:
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Eric Biggers
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debc1e5a43 |
lib/crypto: arm64/sha512-ce: Drop compatibility macros for older binutils
Now that the oldest supported binutils version is 2.30, the macros that emit the SHA-512 instructions as '.inst' words are no longer needed. So drop them. No change in the generated machine code. Changed from the original patch by Ard Biesheuvel: (https://lore.kernel.org/r/20250515142702.2592942-2-ardb+git@google.com): - Reduced scope to just SHA-512 - Added comment that explains why "sha3" is used instead of "sha2" Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250718220706.475240-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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42e3376e09 |
lib/crypto: x86/sha1-ni: Convert to use rounds macros
The assembly code that does all 80 rounds of SHA-1 is highly repetitive. Replace it with 20 expansions of a macro that does 4 rounds, using the macro arguments and .if directives to handle the slight variations between rounds. This reduces the length of sha1-ni-asm.S by 129 lines while still producing the exact same object file. This mirrors sha256-ni-asm.S which uses this same strategy. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250718191900.42877-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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f88ed14aa0 |
lib/crypto: x86/sha1-ni: Minor optimizations and cleanup
- Store the previous state in %xmm8-%xmm9 instead of spilling it to the stack. There are plenty of unused XMM registers here, so there is no reason to spill to the stack. (While 32-bit code is limited to %xmm0-%xmm7, this is 64-bit code, so it's free to use %xmm8-%xmm15.) - Remove the unnecessary check for nblocks == 0. sha1_ni_transform() is always passed a positive nblocks. - To get an XMM register with 'e' in the high dword and the rest zeroes, just zeroize the register using pxor, then load 'e'. Previously the code loaded 'e', then zeroized the lower dwords by AND-ing with a constant, which was slightly less efficient. - Instead of computing &DATA_PTR[NBLOCKS << 6] and stopping when DATA_PTR reaches that value, instead just decrement NBLOCKS on each iteration and stop when it reaches 0. This is fewer instructions. - Rename DIGEST_PTR to STATE_PTR. It points to the SHA-1 internal state, not a SHA-1 digest value. This commit shrinks the code size of sha1_ni_transform() from 624 bytes to 589 bytes and also shrinks rodata by 16 bytes. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250718191900.42877-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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118da22eb6 |
lib/crc: x86/crc32c: Enable VPCLMULQDQ optimization where beneficial
Improve crc32c() performance on lengths >= 512 bytes by using
crc32_lsb_vpclmul_avx512() instead of crc32c_x86_3way(), when the CPU
supports VPCLMULQDQ and has a "good" implementation of AVX-512. For now
that means AMD Zen 4 and later, and Intel Sapphire Rapids and later.
Pass crc32_lsb_vpclmul_avx512() the table of constants needed to make it
use the CRC-32C polynomial.
Rationale: VPCLMULQDQ performance has improved on newer CPUs, making
crc32_lsb_vpclmul_avx512() faster than crc32c_x86_3way(), even though
crc32_lsb_vpclmul_avx512() is designed for generic 32-bit CRCs and does
not utilize x86_64's dedicated CRC-32C instructions.
Performance results for len=4096 using crc_kunit:
CPU Before (MB/s) After (MB/s)
====================== ============= ============
AMD Zen 4 (Genoa) 19868 28618
AMD Zen 5 (Ryzen AI 9 365) 24080 46940
AMD Zen 5 (Turin) 29566 58468
Intel Sapphire Rapids 22340 73794
Intel Emerald Rapids 24696 78666
Performance results for len=512 using crc_kunit:
CPU Before (MB/s) After (MB/s)
====================== ============= ============
AMD Zen 4 (Genoa) 7251 7758
AMD Zen 5 (Ryzen AI 9 365) 17481 19135
AMD Zen 5 (Turin) 21332 25424
Intel Sapphire Rapids 18886 29312
Intel Emerald Rapids 19675 29045
That being said, in the above benchmarks the ZMM registers are "warm",
so they don't quite tell the whole story. While significantly improved
from older Intel CPUs, Intel still has ~2000 ns of ZMM warm-up time
where 512-bit instructions execute 4 times more slowly than they
normally do. In contrast, AMD does better and has virtually zero ZMM
warm-up time (at most ~60 ns). Thus, while this change is always
beneficial on AMD, strictly speaking there are cases in which it is not
beneficial on Intel, e.g. a small number of 512-byte messages with
"cold" ZMM registers. But typically, it is beneficial even on Intel.
Note that on AMD Zen 3--5, crc32c() performance could be further
improved with implementations that interleave crc32q and VPCLMULQDQ
instructions. Unfortunately, it appears that a different such
implementation would be optimal on *each* of these microarchitectures.
Such improvements are left for future work. This commit just improves
the way that we choose the implementations we already have.
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250719224938.126512-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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Eric Biggers
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110628e55a |
lib/crc: x86: Reorganize crc-pclmul static_call initialization
Reorganize the crc-pclmul static_call initialization to place more of the logic in the *_mod_init_arch() functions instead of in the INIT_CRC_PCLMUL macro. This provides the flexibility to do more than a single static_call update for each CPU feature check. Right away, optimize crc64_mod_init_arch() to check the CPU features just once instead of twice, doing both the crc64_msb and crc64_lsb static_call updates together. A later commit will also use this to initialize an additional static_key when crc32_lsb_vpclmul_avx512() is enabled. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250719224938.126512-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Kees Cook
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fc07839203 |
seq_buf: Introduce KUnit tests
Add KUnit tests for the seq_buf API to ensure its correctness and prevent future regressions, covering the following functions: - seq_buf_init() - DECLARE_SEQ_BUF() - seq_buf_clear() - seq_buf_puts() - seq_buf_putc() - seq_buf_printf() - seq_buf_get_buf() - seq_buf_commit() $ tools/testing/kunit/kunit.py run seq_buf =================== seq_buf (9 subtests) =================== [PASSED] seq_buf_init_test [PASSED] seq_buf_declare_test [PASSED] seq_buf_clear_test [PASSED] seq_buf_puts_test [PASSED] seq_buf_puts_overflow_test [PASSED] seq_buf_putc_test [PASSED] seq_buf_printf_test [PASSED] seq_buf_printf_overflow_test [PASSED] seq_buf_get_buf_commit_test ===================== [PASSED] seq_buf ===================== Link: https://lore.kernel.org/r/20250717085156.work.363-kees@kernel.org Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Kees Cook <kees@kernel.org> |
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Herbert Xu
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a9ed4422ad |
lib/raid6: update recov_rvv.c zero page usage
Update lib/raid6/recov_rvv.c, for |
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Kuan-Wei Chiu
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b3d5fd6f82 |
lib/math/gcd: use static key to select implementation at runtime
Patch series "Optimize GCD performance on RISC-V by selecting implementation at runtime", v3. The current implementation of gcd() selects between the binary GCD and the odd-even GCD algorithm at compile time, depending on whether CONFIG_CPU_NO_EFFICIENT_FFS is set. On platforms like RISC-V, however, this compile-time decision can be misleading: even when the compiler emits ctz instructions based on the assumption that they are efficient (as is the case when CONFIG_RISCV_ISA_ZBB is enabled), the actual hardware may lack support for the Zbb extension. In such cases, ffs() falls back to a software implementation at runtime, making the binary GCD algorithm significantly slower than the odd-even variant. To address this, we introduce a static key to allow runtime selection between the binary and odd-even GCD implementations. On RISC-V, the kernel now checks for Zbb support during boot. If Zbb is unavailable, the static key is disabled so that gcd() consistently uses the more efficient odd-even algorithm in that scenario. Additionally, to further reduce code size, we select CONFIG_CPU_NO_EFFICIENT_FFS automatically when CONFIG_RISCV_ISA_ZBB is not enabled, avoiding compilation of the unused binary GCD implementation entirely on systems where it would never be executed. This series ensures that the most efficient GCD algorithm is used in practice and avoids compiling unnecessary code based on hardware capabilities and kernel configuration. This patch (of 3): On platforms like RISC-V, the compiler may generate hardware FFS instructions even if the underlying CPU does not actually support them. Currently, the GCD implementation is chosen at compile time based on CONFIG_CPU_NO_EFFICIENT_FFS, which can result in suboptimal behavior on such systems. Introduce a static key, efficient_ffs_key, to enable runtime selection between the binary GCD (using ffs) and the odd-even GCD implementation. This allows the kernel to default to the faster binary GCD when FFS is efficient, while retaining the ability to fall back when needed. Link: https://lkml.kernel.org/r/20250606134758.1308400-1-visitorckw@gmail.com Link: https://lkml.kernel.org/r/20250606134758.1308400-2-visitorckw@gmail.com Co-developed-by: Yu-Chun Lin <eleanor15x@gmail.com> Signed-off-by: Yu-Chun Lin <eleanor15x@gmail.com> Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Alexandre Ghiti <alexghiti@rivosinc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Feng Tang
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d747755917 |
panic: add 'panic_sys_info' sysctl to take human readable string parameter
Bitmap definition for 'panic_print' is hard to remember and decode. Add 'panic_sys_info='sysctl to take human readable string like "tasks,mem,timers,locks,ftrace,..." and translate it into bitmap. The detailed mapping is: SYS_INFO_TASKS "tasks" SYS_INFO_MEM "mem" SYS_INFO_TIMERS "timers" SYS_INFO_LOCKS "locks" SYS_INFO_FTRACE "ftrace" SYS_INFO_ALL_CPU_BT "all_bt" SYS_INFO_BLOCKED_TASKS "blocked_tasks" [nathan@kernel.org: add __maybe_unused to sys_info_avail] Link: https://lkml.kernel.org/r/20250708-fix-clang-sys_info_avail-warning-v1-1-60d239eacd64@kernel.org Link: https://lkml.kernel.org/r/20250703021004.42328-4-feng.tang@linux.alibaba.com Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com> Suggested-by: Petr Mladek <pmladek@suse.com> Cc: John Ogness <john.ogness@linutronix.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lance Yang <lance.yang@linux.dev> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Feng Tang
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b76e89e50f |
panic: generalize panic_print's function to show sys info
'panic_print' was introduced to help debugging kernel panic by dumping different kinds of system information like tasks' call stack, memory, ftrace buffer, etc. Actually this function could also be used to help debugging other cases like task-hung, soft/hard lockup, etc. where user may need the snapshot of system info at that time. Extract system info dump function related code from panic.c to separate file sys_info.[ch], for wider usage by other kernel parts for debugging. Also modify the macro names about singulars/plurals. Link: https://lkml.kernel.org/r/20250703021004.42328-3-feng.tang@linux.alibaba.com Signed-off-by: Feng Tang <feng.tang@linux.alibaba.com> Suggested-by: Petr Mladek <pmladek@suse.com> Cc: John Ogness <john.ogness@linutronix.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lance Yang <lance.yang@linux.dev> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Thomas Weißschuh
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cd3557a761 |
vdso/gettimeofday: Add support for auxiliary clocks
Expose the auxiliary clocks through the vDSO. Architectures not using the generic vDSO time framework, namely SPARC64, are not supported. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250701-vdso-auxclock-v1-12-df7d9f87b9b8@linutronix.de |
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Thomas Weißschuh
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562f03ed96 |
vdso/gettimeofday: Introduce vdso_get_timestamp()
This code is duplicated and with the introduction of auxiliary clocks will be duplicated even more. Introduce a helper. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250701-vdso-auxclock-v1-9-df7d9f87b9b8@linutronix.de |
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Thomas Weißschuh
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381d96ccc1 |
vdso/gettimeofday: Introduce vdso_set_timespec()
This code is duplicated and with the introduction of auxiliary clocks will be duplicated even more. Introduce a helper. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250701-vdso-auxclock-v1-8-df7d9f87b9b8@linutronix.de |
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Thomas Weißschuh
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1a1cd5fe88 |
vdso/gettimeofday: Introduce vdso_clockid_valid()
Move the clock ID validation check into a common helper. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250701-vdso-auxclock-v1-7-df7d9f87b9b8@linutronix.de |
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Thomas Weißschuh
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fb61bdb27f |
vdso/gettimeofday: Return bool from clock_gettime() helpers
The internal helpers are effectively using boolean results, while pretending to use error numbers. Switch the return type to bool for more clarity. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250701-vdso-auxclock-v1-6-df7d9f87b9b8@linutronix.de |
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Jakub Kicinski
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af2d6148d2 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.16-rc7). Conflicts: Documentation/netlink/specs/ovpn.yaml |
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Tiffany Yang
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bdfa89c489 |
kunit: test: Export kunit_attach_mm()
Tests can allocate from virtual memory using kunit_vm_mmap(), which transparently creates and attaches an mm_struct to the test runner if one is not already attached. This is suitable for most cases, except for when the code under test must access a task's mm before performing an mmap. Expose kunit_attach_mm() as part of the interface for those cases. This does not change the existing behavior. Cc: David Gow <davidgow@google.com> Signed-off-by: Tiffany Yang <ynaffit@google.com> Reviewed-by: Carlos Llamas <cmllamas@google.com> Link: https://lore.kernel.org/r/20250714185321.2417234-4-ynaffit@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Kees Cook
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10299c07c9 |
kunit/fortify: Add back "volatile" for sizeof() constants
It seems the Clang can see through OPTIMIZER_HIDE_VAR when the constant
is coming from sizeof. Adding "volatile" back to these variables solves
this false positive without reintroducing the issues that originally led
to switching to OPTIMIZER_HIDE_VAR in the first place[1].
Reported-by: Nathan Chancellor <nathan@kernel.org>
Closes: https://github.com/ClangBuiltLinux/linux/issues/2075 [1]
Cc: Jannik Glückert <jannik.glueckert@gmail.com>
Suggested-by: Nathan Chancellor <nathan@kernel.org>
Fixes:
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Eric Biggers
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66b1306079 |
lib/crypto: tests: Add KUnit tests for SHA-1 and HMAC-SHA1
Add a KUnit test suite for the SHA-1 library functions, including the corresponding HMAC support. The core test logic is in the previously-added hash-test-template.h. This commit just adds the actual KUnit suite, and it adds the generated test vectors to the tree so that gen-hash-testvecs.py won't have to be run at build time. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250712232329.818226-16-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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6dd4d9f791 |
lib/crypto: tests: Add KUnit tests for Poly1305
Add a KUnit test suite for the Poly1305 functions. Most of its test cases are instantiated from hash-test-template.h, which is also used by the SHA-2 tests. A couple additional test cases are also included to test edge cases specific to Poly1305. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250709200112.258500-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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571eaeddb6 |
lib/crypto: tests: Add KUnit tests for SHA-384 and SHA-512
Add KUnit test suites for the SHA-384 and SHA-512 library functions, including the corresponding HMAC support. The core test logic is in the previously-added hash-test-template.h. This commit just adds the actual KUnit suites, and it adds the generated test vectors to the tree so that gen-hash-testvecs.py won't have to be run at build time. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250709200112.258500-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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4dcf6cadda |
lib/crypto: tests: Add KUnit tests for SHA-224 and SHA-256
Add KUnit test suites for the SHA-224 and SHA-256 library functions, including the corresponding HMAC support. The core test logic is in the previously-added hash-test-template.h. This commit just adds the actual KUnit suites, and it adds the generated test vectors to the tree so that gen-hash-testvecs.py won't have to be run at build time. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250709200112.258500-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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950a81224e |
lib/crypto: tests: Add hash-test-template.h and gen-hash-testvecs.py
Add hash-test-template.h which generates the following KUnit test cases
for hash functions:
test_hash_test_vectors
test_hash_all_lens_up_to_4096
test_hash_incremental_updates
test_hash_buffer_overruns
test_hash_overlaps
test_hash_alignment_consistency
test_hash_ctx_zeroization
test_hash_interrupt_context_1
test_hash_interrupt_context_2
test_hmac (when HMAC is supported)
benchmark_hash (when CONFIG_CRYPTO_LIB_BENCHMARK=y)
The initial use cases for this will be sha224_kunit, sha256_kunit,
sha384_kunit, sha512_kunit, and poly1305_kunit.
Add a Python script gen-hash-testvecs.py which generates the test
vectors required by test_hash_test_vectors,
test_hash_all_lens_up_to_4096, and test_hmac.
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250709200112.258500-2-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
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Eric Biggers
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f3d6cb3dc0 |
lib/crypto: x86/sha1: Migrate optimized code into library
Instead of exposing the x86-optimized SHA-1 code via x86-specific crypto_shash algorithms, instead just implement the sha1_blocks() library function. This is much simpler, it makes the SHA-1 library functions be x86-optimized, and it fixes the longstanding issue where the x86-optimized SHA-1 code was disabled by default. SHA-1 still remains available through crypto_shash, but individual architectures no longer need to handle it. To match sha1_blocks(), change the type of the nblocks parameter of the assembly functions from int to size_t. The assembly functions actually already treated it as size_t. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250712232329.818226-14-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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c751059985 |
lib/crypto: sparc/sha1: Migrate optimized code into library
Instead of exposing the sparc-optimized SHA-1 code via sparc-specific crypto_shash algorithms, instead just implement the sha1_blocks() library function. This is much simpler, it makes the SHA-1 library functions be sparc-optimized, and it fixes the longstanding issue where the sparc-optimized SHA-1 code was disabled by default. SHA-1 still remains available through crypto_shash, but individual architectures no longer need to handle it. Note: to see the diff from arch/sparc/crypto/sha1_glue.c to lib/crypto/sparc/sha1.h, view this commit with 'git show -M10'. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250712232329.818226-13-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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377982d561 |
lib/crypto: s390/sha1: Migrate optimized code into library
Instead of exposing the s390-optimized SHA-1 code via s390-specific crypto_shash algorithms, instead just implement the sha1_blocks() library function. This is much simpler, it makes the SHA-1 library functions be s390-optimized, and it fixes the longstanding issue where the s390-optimized SHA-1 code was disabled by default. SHA-1 still remains available through crypto_shash, but individual architectures no longer need to handle it. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250712232329.818226-12-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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6b9ae8cfaa |
lib/crypto: powerpc/sha1: Migrate optimized code into library
Instead of exposing the powerpc-optimized SHA-1 code via powerpc-specific crypto_shash algorithms, instead just implement the sha1_blocks() library function. This is much simpler, it makes the SHA-1 library functions be powerpc-optimized, and it fixes the longstanding issue where the powerpc-optimized SHA-1 code was disabled by default. SHA-1 still remains available through crypto_shash, but individual architectures no longer need to handle it. Note: to see the diff from arch/powerpc/crypto/sha1-spe-glue.c to lib/crypto/powerpc/sha1.h, view this commit with 'git show -M10'. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250712232329.818226-11-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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b6ac1dac2f |
lib/crypto: mips/sha1: Migrate optimized code into library
Instead of exposing the mips-optimized SHA-1 code via mips-specific crypto_shash algorithms, instead just implement the sha1_blocks() library function. This is much simpler, it makes the SHA-1 library functions be mips-optimized, and it fixes the longstanding issue where the mips-optimized SHA-1 code was disabled by default. SHA-1 still remains available through crypto_shash, but individual architectures no longer need to handle it. Note: to see the diff from arch/mips/cavium-octeon/crypto/octeon-sha1.c to lib/crypto/mips/sha1.h, view this commit with 'git show -M10'. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250712232329.818226-10-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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00d549bb89 |
lib/crypto: arm64/sha1: Migrate optimized code into library
Instead of exposing the arm64-optimized SHA-1 code via arm64-specific crypto_shash algorithms, instead just implement the sha1_blocks() library function. This is much simpler, it makes the SHA-1 library functions be arm64-optimized, and it fixes the longstanding issue where the arm64-optimized SHA-1 code was disabled by default. SHA-1 still remains available through crypto_shash, but individual architectures no longer need to handle it. Remove support for SHA-1 finalization from assembly code, since the library does not yet support architecture-specific overrides of the finalization. (Support for that has been omitted for now, for simplicity and because usually it isn't performance-critical.) To match sha1_blocks(), change the type of the nblocks parameter and the return value of __sha1_ce_transform() from int to size_t. Update the assembly code accordingly. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250712232329.818226-9-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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70cb6ca58f |
lib/crypto: arm/sha1: Migrate optimized code into library
Instead of exposing the arm-optimized SHA-1 code via arm-specific crypto_shash algorithms, instead just implement the sha1_blocks() library function. This is much simpler, it makes the SHA-1 library functions be arm-optimized, and it fixes the longstanding issue where the arm-optimized SHA-1 code was disabled by default. SHA-1 still remains available through crypto_shash, but individual architectures no longer need to handle it. To match sha1_blocks(), change the type of the nblocks parameter of the assembly functions from int to size_t. The assembly functions actually already treated it as size_t. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250712232329.818226-8-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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4cbc84471b |
lib/crypto: sha1: Add HMAC support
Add HMAC support to the SHA-1 library, again following what was done for SHA-2. Besides providing the basis for a more streamlined "hmac(sha1)" shash, this will also be useful for multiple in-kernel users such as net/sctp/auth.c, net/ipv6/seg6_hmac.c, and security/keys/trusted-keys/trusted_tpm1.c. Those are currently using crypto_shash, but using the library functions would be much simpler. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250712232329.818226-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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90860aef63 |
lib/crypto: sha1: Add SHA-1 library functions
Add a library interface for SHA-1, following the SHA-2 one. As was the case with SHA-2, this will be useful for various in-kernel users. The crypto_shash interface will be reimplemented on top of it as well. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250712232329.818226-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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9503ca2cca |
lib/crypto: sha1: Rename sha1_init() to sha1_init_raw()
Rename the existing sha1_init() to sha1_init_raw(), since it conflicts with the upcoming library function. This will later be removed, but this keeps the kernel building for the introduction of the library. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250712232329.818226-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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7941ad6965 |
lib/crypto: sha2: Add hmac_sha*_init_usingrawkey()
While the HMAC library functions support both incremental and one-shot computation and both prepared and raw keys, the combination of raw key + incremental was missing. It turns out that several potential users of the HMAC library functions (tpm2-sessions.c, smb2transport.c, trusted_tpm1.c) want exactly that. Therefore, add the missing functions hmac_sha*_init_usingrawkey(). Implement them in an optimized way that directly initializes the HMAC context without a separate key preparation step. Reimplement the one-shot raw key functions hmac_sha*_usingrawkey() on top of the new functions, which makes them a bit more efficient. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250711215844.41715-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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6e07c5e166 |
lib/crypto: arm/poly1305: Remove unneeded empty weak function
Fix poly1305-armv4.pl to not do '.globl poly1305_blocks_neon' when poly1305_blocks_neon() is not defined. Then, remove the empty __weak definition of poly1305_blocks_neon(), which was still needed only because of that unnecessary globl statement. (It also used to be needed because the compiler could generate calls to it when CONFIG_KERNEL_MODE_NEON=n, but that has been fixed.) Thanks to Arnd Bergmann for reporting that the globl statement in the asm file was still depending on the weak symbol. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250711212822.6372-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Peter Zijlstra
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8f2146159b |
Merge branch 'tip/sched/urgent'
Avoid merge conflicts Signed-off-by: Peter Zijlstra <peterz@infradead.org> |
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Raghavendra K T
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ee58e38489 |
lib/test_vmalloc.c: introduce xfail for failing tests
The test align_shift_alloc_test is expected to fail. Reporting the test as fail confuses to be a genuine failure. Introduce widely used xfail sematics to address the issue. Note: a warn_alloc dump similar to below is still expected: Call Trace: <TASK> dump_stack_lvl+0x64/0x80 warn_alloc+0x137/0x1b0 ? __get_vm_area_node+0x134/0x140 Snippet of dmesg after change: Summary: random_size_align_alloc_test passed: 1 failed: 0 xfailed: 0 .. Summary: align_shift_alloc_test passed: 0 failed: 0 xfailed: 1 .. Summary: pcpu_alloc_test passed: 1 failed: 0 xfailed: 0 .. Link: https://lkml.kernel.org/r/20250702064319.885-1-raghavendra.kt@amd.com Signed-off-by: Raghavendra K T <raghavendra.kt@amd.com> Reviewed-by: "Uladzislau Rezki (Sony)" <urezki@gmail.com> Cc: Dev Jain <dev.jain@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Dev Jain
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526f36f3f4 |
maple tree: add some comments
Add comments explaining the fields for maple_metadata, since "end" is ambiguous and "gap" can be confused as the largest gap, whereas it is actually the offset of the largest gap. Add comment for mas_ascend() to explain, whose min and max we are trying to find. Explain that, for example, if we are already on offset zero, then the parent min is mas->min, otherwise we need to walk up to find the implied pivot min. Link: https://lkml.kernel.org/r/20250703063338.51509-1-dev.jain@arm.com Signed-off-by: Dev Jain <dev.jain@arm.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrew Morton
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cac3d177c0 |
Merge branch 'mm-hotfixes-stable' into mm-stable to pick up changes which
are required for a merge of the series "mm: folio_pte_batch() improvements". |
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Eric Biggers
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9f65592b7e |
lib/crypto: x86/poly1305: Fix performance regression on short messages
Restore the len >= 288 condition on using the AVX implementation, which was incidentally removed by commit |
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Eric Biggers
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16f2c30e29 |
lib/crypto: x86/poly1305: Fix register corruption in no-SIMD contexts
Restore the SIMD usability check and base conversion that were removed by commit |
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Eric Biggers
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eec76ea5a7 |
lib/crypto: arm64/poly1305: Fix register corruption in no-SIMD contexts
Restore the SIMD usability check that was removed by commit |
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Eric Biggers
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52c3e242f4 |
lib/crypto: arm/poly1305: Fix register corruption in no-SIMD contexts
Restore the SIMD usability check that was removed by commit |
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Sergio González Collado
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34db4fba81 |
kunit: fix longest symbol length test
The kunit test that checks the longests symbol length [1], has triggered warnings in some pilelines when symbol prefixes are used [2][3]. The test will to depend on !PREFIX_SYMBOLS and !CFI_CLANG as sujested in [4] and on !GCOV_KERNEL. [1] https://lore.kernel.org/rust-for-linux/CABVgOSm=5Q0fM6neBhxSbOUHBgNzmwf2V22vsYC10YRBT=kN1g@mail.gmail.com/T/#t [2] https://lore.kernel.org/all/20250328112156.2614513-1-arnd@kernel.org/T/#u [3] https://lore.kernel.org/rust-for-linux/bbd03b37-c4d9-4a92-9be2-75aaf8c19815@infradead.org/T/#t [4] https://lore.kernel.org/linux-kselftest/20250427200916.GA1661412@ax162/T/#t Link: https://lore.kernel.org/r/20250706201855.232451-1-sergio.collado@gmail.com Reviewed-by: Rae Moar <rmoar@google.com> Signed-off-by: Sergio González Collado <sergio.collado@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Sebastian Andrzej Siewior
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2885daf470 |
lib/smp_processor_id: Make migration check unconditional of SMP
Commit |
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Arnd Bergmann
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caf728dfa7 |
lib: test_objagg: split test_hints_case() into two functions
With sanitizers enabled, this function uses a lot of stack, causing a harmless warning: lib/test_objagg.c: In function 'test_hints_case.constprop': lib/test_objagg.c:994:1: error: the frame size of 1440 bytes is larger than 1408 bytes [-Werror=frame-larger-than=] Most of this is from the two 'struct world' structures. Since most of the work in this function is duplicated for the two, split it up into separate functions that each use one of them. The combined stack usage is still the same here, but there is no warning any more, and the code is still safe because of the known call chain. Link: https://lkml.kernel.org/r/20250620111907.3395296-1-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Herbert Xu
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1857fcc847 |
lib/raid6: replace custom zero page with ZERO_PAGE
Use the system-wide zero page instead of a custom zero page. [herbert@gondor.apana.org.au: update lib/raid6/recov_rvv.c, per Klara] Link: https://lkml.kernel.org/r/aFkUnXWtxcgOTVkw@gondor.apana.org.au Link: https://lkml.kernel.org/r/Z9flJNkWQICx0PXk@gondor.apana.org.au Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Cc: Song Liu <song@kernel.org> Cc: Yu Kuai <yukuai3@huawei.com> Cc: Klara Modin <klarasmodin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Nicolas Pitre
|
e795000e75 |
mul_u64_u64_div_u64: fix the division-by-zero behavior
The current implementation forces a compile-time 1/0 division, which generates an undefined instruction (ud2 on x86) rather than a proper runtime division-by-zero exception. Change to trigger an actual div-by-0 exception at runtime, consistent with other division operations. Use a non-1 dividend to prevent the compiler from optimizing the division into a comparison. Link: https://lkml.kernel.org/r/q246p466-1453-qon9-29so-37105116009q@onlyvoer.pbz Signed-off-by: Nicolas Pitre <npitre@baylibre.com> Cc: Biju Das <biju.das.jz@bp.renesas.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Weißschuh <linux@weissschuh.net> Cc: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Cc: David Laight <david.laight.linux@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
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1f0bce2fa8 |
maple_tree: add testing for restoring maple state to active
Restoring maple status to ma_active on overflow/underflow when mas->node was NULL could have happened in the past, but was masked by a bug in mas_walk(). Add test cases that triggered the bug when the node was mas->node prior to fixing the maple state setup. Add a few extra tests around restoring the active maple status. Link: https://lore.kernel.org/all/202506191556.6bfc7b93-lkp@intel.com/ Link: https://lkml.kernel.org/r/20250624154823.52221-2-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com> Reviewed-by: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Liam R. Howlett
|
12f1d79312 |
maple_tree: fix status setup on restore to active
During the initial call with a maple state, an error status may be set
before a valid node is populated into the maple state node. Subsequent
calls with the maple state may restore the state into an active state with
no node set. This was masked by the mas_walk() always resetting the
status to ma_start and result in an extra walk in this rare scenario.
Don't restore the state to active unless there is a value in the structs
node. This also allows mas_walk() to be fixed to use the active state
without exposing an issue.
User visible results are marginal performance improvements when an active
state can be restored and used instead of rewalking the tree.
Stable is not Cc'ed because the existing code is stable and the
performance gains are not worth the risk.
Link: https://lore.kernel.org/all/20250611011253.19515-1-richard.weiyang@gmail.com/
Link: https://lore.kernel.org/all/20250407231354.11771-1-richard.weiyang@gmail.com/
Link: https://lore.kernel.org/all/202506191556.6bfc7b93-lkp@intel.com/
Link: https://lkml.kernel.org/r/20250624154823.52221-1-Liam.Howlett@oracle.com
Fixes:
|
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Uladzislau Rezki (Sony)
|
d8e77a0b63 |
lib/test_vmalloc.c: restrict default test mask to avoid test warnings
When the vmalloc test is built into the kernel, it runs automatically during the boot. The current-default "run_test_mask" includes all test cases, including those which are designed to fail and which trigger kernel warnings. These kernel splats can be misinterpreted as actual kernel bugs, leading to false alarms and unnecessary reports. To address this, limit the default test mask to only the first few tests which are expected to pass cleanly. These tests are safe and should not generate any warnings unless there is a real bug. Users who wish to explicitly run specific test cases have to pass the run_test_mask as a boot parameter or at module load time. Link: https://lkml.kernel.org/r/20250623184035.581229-2-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Reviewed-by: Baoquan He <bhe@redhat.com> Cc: Harry Yoo <harry.yoo@oracle.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: David Wang <00107082@163.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Uladzislau Rezki (Sony)
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2e72850549 |
lib/test_vmalloc.c: use late_initcall() if built-in for init ordering
When the vmalloc test code is compiled as a built-in, use late_initcall() instead of module_init() to defer a vmalloc test execution until most subsystems are up and running. It avoids interfering with components that may not yet be initialized at module_init() time. For example, there was a recent report of memory profiling infrastructure not being ready early enough leading to kernel crash. By using late_initcall() in the built-in case, we ensure the tests are run at a safer point during a boot sequence. Link: https://lkml.kernel.org/r/20250623184035.581229-1-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Reviewed-by: Baoquan He <bhe@redhat.com> Cc: Harry Yoo <harry.yoo@oracle.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: David Wang <00107082@163.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Dev Jain
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592b939b59 |
maple tree: use goto label to simplify code
Use the underflow goto label to set the status to ma_underflow and return NULL, as is being done elsewhere. [akpm@linux-foundation.org: add newline, per Liam (and remove one, per akpm)] Link: https://lkml.kernel.org/r/20250624080748.4855-1-dev.jain@arm.com Signed-off-by: Dev Jain <dev.jain@arm.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Reviewed-by: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Hao Ge
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59b5ed409d |
mm/percpu: conditionally define _shared_alloc_tag via CONFIG_ARCH_MODULE_NEEDS_WEAK_PER_CPU
Recently discovered this entry while checking kallsyms on ARM64: ffff800083e509c0 D _shared_alloc_tag If ARCH_NEEDS_WEAK_PER_CPU is not defined(it is only defined for s390 and alpha architectures), there's no need to statically define the percpu variable _shared_alloc_tag. Therefore, we need to implement isolation for this purpose. When building the core kernel code for s390 or alpha architectures, ARCH_NEEDS_WEAK_PER_CPU remains undefined (as it is gated by #if defined(MODULE)). However, when building modules for these architectures, the macro is explicitly defined. Therefore, we remove all instances of ARCH_NEEDS_WEAK_PER_CPU from the code and introduced CONFIG_ARCH_MODULE_NEEDS_WEAK_PER_CPU to replace the relevant logic. We can now conditionally define the perpcu variable _shared_alloc_tag based on CONFIG_ARCH_MODULE_NEEDS_WEAK_PER_CPU. This allows architectures (such as s390/alpha) that require weak definitions for percpu variables in modules to include the definition, while others can omit it via compile-time exclusion. Link: https://lkml.kernel.org/r/20250618015809.1235761-1-hao.ge@linux.dev Signed-off-by: Hao Ge <gehao@kylinos.cn> Suggested-by: Suren Baghdasaryan <surenb@google.com> Acked-by: Alexander Gordeev <agordeev@linux.ibm.com> [s390] Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Chistoph Lameter <cl@linux.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: David Hildenbrand <david@redhat.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <richard.henderson@linaro.org> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Tejun Heo <tj@kernel.org> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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David Wang
|
9f44df50fe |
alloc_tag: keep codetag iterator active between read()
When reading /proc/allocinfo, for each read syscall, seq_file would invoke
start/stop callbacks. In start callback, a memory is alloced to store
iterator and the iterator would start from beginning to walk linearly to
current read position.
seq_file read() takes at most 4096 bytes, even if read with a larger user
space buffer, meaning read out all of /proc/allocinfo, tens of read
syscalls are needed. For example, a 306036 bytes allocinfo files need 76
reads:
$ sudo cat /proc/allocinfo | wc
3964 16678 306036
$ sudo strace -T -e read cat /proc/allocinfo
...
read(3, " 4096 1 arch/x86/k"..., 131072) = 4063 <0.000062>
...
read(3, " 0 0 sound/core"..., 131072) = 4021 <0.000150>
...
For those n=3964 lines, each read takes about m=3964/76=52 lines,
since iterator restart from beginning for each read(),
it would move forward
m steps on 1st read
2*m steps on 2nd read
3*m steps on 3rd read
...
n steps on last read
As read() along, those linear seek steps make read() calls slower and
slower. Adding those up, codetag iterator moves about O(n*n/m) steps,
making data structure traversal take significant part of the whole
reading. Profiling when stress reading /proc/allocinfo confirms it:
vfs_read(99.959% 1677299/1677995)
proc_reg_read_iter(99.856% 1674881/1677299)
seq_read_iter(99.959% 1674191/1674881)
allocinfo_start(75.664% 1266755/1674191)
codetag_next_ct(79.217% 1003487/1266755) <---
srso_return_thunk(1.264% 16011/1266755)
__kmalloc_cache_noprof(0.102% 1296/1266755)
...
allocinfo_show(21.287% 356378/1674191)
allocinfo_next(1.530% 25621/1674191)
codetag_next_ct() takes major part.
A private data alloced at open() time can be used to carry iterator alive
across read() calls, and avoid the memory allocation and iterator reset
for each read(). This way, only O(1) memory allocation and O(n) steps
iterating, and `time` shows performance improvement from ~7ms to ~4ms.
Profiling with the change:
vfs_read(99.865% 1581073/1583214)
proc_reg_read_iter(99.485% 1572934/1581073)
seq_read_iter(99.846% 1570519/1572934)
allocinfo_show(87.428% 1373074/1570519)
seq_buf_printf(83.695% 1149196/1373074)
seq_buf_putc(1.917% 26321/1373074)
_find_next_bit(1.531% 21023/1373074)
...
codetag_to_text(0.490% 6727/1373074)
...
allocinfo_next(6.275% 98543/1570519)
...
allocinfo_start(0.369% 5790/1570519)
...
Now seq_buf_printf() takes major part.
Link: https://lkml.kernel.org/r/20250609064408.112783-1-00107082@163.com
Signed-off-by: David Wang <00107082@163.com>
Acked-by: Suren Baghdasaryan <surenb@google.com>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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David Wang
|
b0da7709c2 |
alloc_tag: add sequence number for module and iterator
Codetag iterator use <id,address> pair to guarantee the validness. But both id and address can be reused, there is theoretical possibility when module inserted right after another module removed, kmalloc returns an address same as the address kfree by previous module and IDR key reuses the key recently removed. Add a sequence number to codetag_module and code_iterator, the sequence number is strickly incremented whenever a module is loaded. An iterator is valid if and only if its sequence number match codetag_module's. Link: https://lkml.kernel.org/r/20250609064200.112639-1-00107082@163.com Signed-off-by: David Wang <00107082@163.com> Acked-by: Suren Baghdasaryan <surenb@google.com> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Arnd Bergmann
|
6046a3bed1 |
lib/test_hmm: reduce stack usage
The various test ioctl handlers use arrays of 64 integers that add up to 1KiB of stack data, which in turn leads to exceeding the warning limit in some configurations: lib/test_hmm.c:935:12: error: stack frame size (1408) exceeds limit (1280) in 'dmirror_migrate_to_device' [-Werror,-Wframe-larger-than] Use half the size for these arrays, in order to stay under the warning limits. The code can already deal with arbitrary lengths, but this may be a little less efficient. Link: https://lkml.kernel.org/r/20250610092159.2639515-1-arnd@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Alistair Popple <apopple@nvidia.com> Cc: David Hildenbrand <david@redhat.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jeff Johnson <jeff.johnson@oss.qualcomm.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Thorsten Blum <thorsten.blum@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Dev Jain
|
1e6b17b423 |
xarray: add a BUG_ON() to ensure caller is not sibling
Suppose xas is pointing somewhere near the end of the multi-entry batch. Then it may happen that the computed slot already falls beyond the batch, thus breaking the loop due to !xa_is_sibling(), and computing the wrong order. For example, suppose we have a shift-6 node having an order-9 entry => 8 - 1 = 7 siblings, so assume the slots are at offset 0 till 7 in this node. If xas->xa_offset is 6, then the code will compute order as 1 + xas->xa_node->shift = 7. Therefore, the order computation must start from the beginning of the multi-slot entries, that is, the non-sibling entry. Thus ensure that the caller is aware of this by triggering a BUG when the entry is a sibling entry. Note that this BUG_ON() is only active while running selftests, so there is no overhead in a running kernel. Link: https://lkml.kernel.org/r/20250604041533.91198-1-dev.jain@arm.com Signed-off-by: Dev Jain <dev.jain@arm.com> Acked-by: Zi Yan <ziy@nvidia.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@kernel.org> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: David Hildenbrand <david@redhat.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Ryan Roberts <ryan.roberts@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
ea9b77f98d |
maple_tree: fix mt_destroy_walk() on root leaf node
On destroy, we should set each node dead. But current code miss this when
the maple tree has only the root node.
The reason is mt_destroy_walk() leverage mte_destroy_descend() to set node
dead, but this is skipped since the only root node is a leaf.
Fixes this by setting the node dead if it is a leaf.
Link: https://lore.kernel.org/all/20250407231354.11771-1-richard.weiyang@gmail.com/
Link: https://lkml.kernel.org/r/20250624191841.64682-1-Liam.Howlett@oracle.com
Fixes:
|
||
|
Harry Yoo
|
99af22cd34 |
lib/alloc_tag: do not acquire non-existent lock in alloc_tag_top_users()
alloc_tag_top_users() attempts to lock alloc_tag_cttype->mod_lock even
when the alloc_tag_cttype is not allocated because:
1) alloc tagging is disabled because mem profiling is disabled
(!alloc_tag_cttype)
2) alloc tagging is enabled, but not yet initialized (!alloc_tag_cttype)
3) alloc tagging is enabled, but failed initialization
(!alloc_tag_cttype or IS_ERR(alloc_tag_cttype))
In all cases, alloc_tag_cttype is not allocated, and therefore
alloc_tag_top_users() should not attempt to acquire the semaphore.
This leads to a crash on memory allocation failure by attempting to
acquire a non-existent semaphore:
Oops: general protection fault, probably for non-canonical address 0xdffffc000000001b: 0000 [#3] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x00000000000000d8-0x00000000000000df]
CPU: 2 UID: 0 PID: 1 Comm: systemd Tainted: G D 6.16.0-rc2 #1 VOLUNTARY
Tainted: [D]=DIE
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:down_read_trylock+0xaa/0x3b0
Code: d0 7c 08 84 d2 0f 85 a0 02 00 00 8b 0d df 31 dd 04 85 c9 75 29 48 b8 00 00 00 00 00 fc ff df 48 8d 6b 68 48 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 88 02 00 00 48 3b 5b 68 0f 85 53 01 00 00 65 ff
RSP: 0000:ffff8881002ce9b8 EFLAGS: 00010016
RAX: dffffc0000000000 RBX: 0000000000000070 RCX: 0000000000000000
RDX: 000000000000001b RSI: 000000000000000a RDI: 0000000000000070
RBP: 00000000000000d8 R08: 0000000000000001 R09: ffffed107dde49d1
R10: ffff8883eef24e8b R11: ffff8881002cec20 R12: 1ffff11020059d37
R13: 00000000003fff7b R14: ffff8881002cec20 R15: dffffc0000000000
FS: 00007f963f21d940(0000) GS:ffff888458ca6000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f963f5edf71 CR3: 000000010672c000 CR4: 0000000000350ef0
Call Trace:
<TASK>
codetag_trylock_module_list+0xd/0x20
alloc_tag_top_users+0x369/0x4b0
__show_mem+0x1cd/0x6e0
warn_alloc+0x2b1/0x390
__alloc_frozen_pages_noprof+0x12b9/0x21a0
alloc_pages_mpol+0x135/0x3e0
alloc_slab_page+0x82/0xe0
new_slab+0x212/0x240
___slab_alloc+0x82a/0xe00
</TASK>
As David Wang points out, this issue became easier to trigger after commit
|
||
|
Thomas Weißschuh
|
34f888e340 |
vdso/gettimeofday: Return bool from clock_getres() helpers
The internal helpers are effectively using boolean results, while pretending to use error numbers. Switch the return type to bool for more clarity. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250701-vdso-auxclock-v1-5-df7d9f87b9b8@linutronix.de |
||
|
Yury Norov [NVIDIA]
|
c56f97c5c7 |
bitmap: generalize node_random()
Generalize node_random() and make it available to general bitmaps and
cpumasks users.
Notice, find_first_bit() is generally faster than find_nth_bit(), and we
employ it when there's a single set bit in the bitmap.
See commit
|
||
|
Eric Biggers
|
aacb37f597 |
lib/crypto: hash_info: Move hash_info.c into lib/crypto/
crypto/hash_info.c just contains a couple of arrays that map HASH_ALGO_* algorithm IDs to properties of those algorithms. It is compiled only when CRYPTO_HASH_INFO=y, but currently CRYPTO_HASH_INFO depends on CRYPTO. Since this can be useful without the old-school crypto API, move it into lib/crypto/ so that it no longer depends on CRYPTO. This eliminates the need for FS_VERITY to select CRYPTO after it's been converted to use lib/crypto/. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630172224.46909-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
57b15e9260 |
lib/crypto: x86/sha256: Remove unnecessary checks for nblocks==0
Since sha256_blocks() is called only with nblocks >= 1, remove unnecessary checks for nblocks == 0 from the x86 SHA-256 assembly code. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250704023958.73274-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
a8c60a9aca |
lib/crypto: x86/sha256: Move static_call above kernel-mode FPU section
As I did for sha512_blocks(), reorganize x86's sha256_blocks() to be just a static_call. To achieve that, for each assembly function add a C function that handles the kernel-mode FPU section and fallback. While this increases total code size slightly, the amount of code actually executed on a given system does not increase, and it is slightly more efficient since it eliminates the extra static_key. It also makes the assembly functions be called with standard direct calls instead of static calls, eliminating the need for ANNOTATE_NOENDBR. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250704023958.73274-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
773d2b99bb |
lib/crypto: sha256: Sync sha256_update() with sha512_update()
The BLOCK_HASH_UPDATE_BLOCKS macro is difficult to read. For now, let's just write the update explicitly in the straightforward way, mirroring sha512_update(). It's possible that we'll bring back a macro for this later, but it needs to be properly justified and hopefully a bit more readable. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160645.3198-14-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
e96cb9507f |
lib/crypto: sha256: Consolidate into single module
Consolidate the CPU-based SHA-256 code into a single module, following what I did with SHA-512: - Each arch now provides a header file lib/crypto/$(SRCARCH)/sha256.h, replacing lib/crypto/$(SRCARCH)/sha256.c. The header defines sha256_blocks() and optionally sha256_mod_init_arch(). It is included by lib/crypto/sha256.c, and thus the code gets built into the single libsha256 module, with proper inlining and dead code elimination. - sha256_blocks_generic() is moved from lib/crypto/sha256-generic.c into lib/crypto/sha256.c. It's now a static function marked with __maybe_unused, so the compiler automatically eliminates it in any cases where it's not used. - Whether arch-optimized SHA-256 is buildable is now controlled centrally by lib/crypto/Kconfig instead of by lib/crypto/$(SRCARCH)/Kconfig. The conditions for enabling it remain the same as before, and it remains enabled by default. - Any additional arch-specific translation units for the optimized SHA-256 code (such as assembly files) are now compiled by lib/crypto/Makefile instead of lib/crypto/$(SRCARCH)/Makefile. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160645.3198-13-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
9f9846a72e |
lib/crypto: sha256: Remove sha256_is_arch_optimized()
Remove sha256_is_arch_optimized(), since it is no longer used. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160645.3198-12-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
077833cd60 |
lib/crypto: sha256: Add HMAC-SHA224 and HMAC-SHA256 support
Since HMAC support is commonly needed and is fairly simple, include it as a first-class citizen of the SHA-256 library. The API supports both incremental and one-shot computation, and either preparing the key ahead of time or just using a raw key. The implementation is much more streamlined than crypto/hmac.c. I've kept it consistent with the HMAC-SHA384 and HMAC-SHA512 code as much as possible. Testing of these functions will be via sha224_kunit and sha256_kunit, added by a later commit. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160645.3198-9-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
4c855d5069 |
lib/crypto: sha256: Propagate sha256_block_state type to implementations
The previous commit made the SHA-256 compression function state be strongly typed, but it wasn't propagated all the way down to the implementations of it. Do that now. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160645.3198-8-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
b86ced882b |
lib/crypto: sha256: Make library API use strongly-typed contexts
Currently the SHA-224 and SHA-256 library functions can be mixed arbitrarily, even in ways that are incorrect, for example using sha224_init() and sha256_final(). This is because they operate on the same structure, sha256_state. Introduce stronger typing, as I did for SHA-384 and SHA-512. Also as I did for SHA-384 and SHA-512, use the names *_ctx instead of *_state. The *_ctx names have the following small benefits: - They're shorter. - They avoid an ambiguity with the compression function state. - They're consistent with the well-known OpenSSL API. - Users usually name the variable 'sctx' anyway, which suggests that *_ctx would be the more natural name for the actual struct. Therefore: update the SHA-224 and SHA-256 APIs, implementation, and calling code accordingly. In the new structs, also strongly-type the compression function state. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160645.3198-7-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
6fa4b29220 |
lib/crypto: sha256: Add sha224() and sha224_update()
Add a one-shot SHA-224 computation function sha224(), for consistency with sha256(), sha384(), and sha512() which all already exist. Similarly, add sha224_update(). While for now it's identical to sha256_update(), omitting it makes the API harder to use since users have to "know" which functions are the same between SHA-224 and SHA-256. Also, this is a prerequisite for using different context types for each. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160645.3198-6-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
9f97707bdb |
lib/crypto: sha256: Remove sha256_blocks_simd()
Instead of having both sha256_blocks_arch() and sha256_blocks_simd(), instead have just sha256_blocks_arch() which uses the most efficient implementation that is available in the calling context. This is simpler, as it reduces the API surface. It's also safer, since sha256_blocks_arch() just works in all contexts, including contexts where the FPU/SIMD/vector registers cannot be used. This doesn't mean that SHA-256 computations *should* be done in such contexts, but rather we should just do the right thing instead of corrupting a random task's registers. Eliminating this footgun and simplifying the code is well worth the very small performance cost of doing the check. Note: in the case of arm and arm64, what used to be sha256_blocks_arch() is renamed back to its original name of sha256_block_data_order(). sha256_blocks_arch() is now used for the higher-level dispatch function. This renaming also required an update to lib/crypto/arm64/sha512.h, since sha2-armv8.pl is shared by both SHA-256 and SHA-512. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160645.3198-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
3135d5be7c |
lib/crypto: sha256: Reorder some code
First, move the declarations of sha224_init/update/final to be just above the corresponding SHA-256 code, matching the order that I used for SHA-384 and SHA-512. In sha2.h, the end result is that SHA-224, SHA-256, SHA-384, and SHA-512 are all in the logical order. Second, move sha224_block_init() and sha256_block_init() to be just below crypto_sha256_state. In later changes, these functions as well as struct crypto_sha256_state will no longer be used by the library functions. They'll remain just for some legacy offload drivers. This gets them into a logical place in the file for that. No code changes other than reordering. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160645.3198-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Paolo Abeni
|
6b9fd8857b |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.16-rc5). No conflicts. No adjacent changes. Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
|
Linus Torvalds
|
17bbde2e17 |
Including fixes from Bluetooth.
Current release - new code bugs:
- eth: txgbe: fix the issue of TX failure
- eth: ngbe: specify IRQ vector when the number of VFs is 7
Previous releases - regressions:
- sched: always pass notifications when child class becomes empty
- ipv4: fix stat increase when udp early demux drops the packet
- bluetooth: prevent unintended pause by checking if advertising is active
- virtio: fix error reporting in virtqueue_resize
- eth: virtio-net:
- ensure the received length does not exceed allocated size
- fix the xsk frame's length check
- eth: lan78xx: fix WARN in __netif_napi_del_locked on disconnect
Previous releases - always broken:
- bluetooth: mesh: check instances prior disabling advertising
- eth: idpf: convert control queue mutex to a spinlock
- eth: dpaa2: fix xdp_rxq_info leak
- eth: amd-xgbe: align CL37 AN sequence as per databook
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.16-rc5' 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:
- eth:
- txgbe: fix the issue of TX failure
- ngbe: specify IRQ vector when the number of VFs is 7
Previous releases - regressions:
- sched: always pass notifications when child class becomes empty
- ipv4: fix stat increase when udp early demux drops the packet
- bluetooth: prevent unintended pause by checking if advertising is active
- virtio: fix error reporting in virtqueue_resize
- eth:
- virtio-net:
- ensure the received length does not exceed allocated size
- fix the xsk frame's length check
- lan78xx: fix WARN in __netif_napi_del_locked on disconnect
Previous releases - always broken:
- bluetooth: mesh: check instances prior disabling advertising
- eth:
- idpf: convert control queue mutex to a spinlock
- dpaa2: fix xdp_rxq_info leak
- amd-xgbe: align CL37 AN sequence as per databook"
* tag 'net-6.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (38 commits)
vsock/vmci: Clear the vmci transport packet properly when initializing it
dt-bindings: net: sophgo,sg2044-dwmac: Drop status from the example
net: ngbe: specify IRQ vector when the number of VFs is 7
net: wangxun: revert the adjustment of the IRQ vector sequence
net: txgbe: request MISC IRQ in ndo_open
virtio_net: Enforce minimum TX ring size for reliability
virtio_net: Cleanup '2+MAX_SKB_FRAGS'
virtio_ring: Fix error reporting in virtqueue_resize
virtio-net: xsk: rx: fix the frame's length check
virtio-net: use the check_mergeable_len helper
virtio-net: remove redundant truesize check with PAGE_SIZE
virtio-net: ensure the received length does not exceed allocated size
net: ipv4: fix stat increase when udp early demux drops the packet
net: libwx: fix the incorrect display of the queue number
amd-xgbe: do not double read link status
net/sched: Always pass notifications when child class becomes empty
nui: Fix dma_mapping_error() check
rose: fix dangling neighbour pointers in rose_rt_device_down()
enic: fix incorrect MTU comparison in enic_change_mtu()
amd-xgbe: align CL37 AN sequence as per databook
...
|
||
|
Dan Carpenter
|
e6ed134a4e |
lib: test_objagg: Set error message in check_expect_hints_stats()
Smatch complains that the error message isn't set in the caller:
lib/test_objagg.c:923 test_hints_case2()
error: uninitialized symbol 'errmsg'.
This static checker warning only showed up after a recent refactoring
but the bug dates back to when the code was originally added. This
likely doesn't affect anything in real life.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/r/202506281403.DsuyHFTZ-lkp@intel.com/
Fixes:
|
||
|
Daniel Wagner
|
b6139a6abf |
lib/group_cpus: Let group_cpu_evenly() return the number of initialized masks
group_cpu_evenly() might have allocated less groups then requested:
group_cpu_evenly()
__group_cpus_evenly()
alloc_nodes_groups()
# allocated total groups may be less than numgrps when
# active total CPU number is less then numgrps
In this case, the caller will do an out of bound access because the
caller assumes the masks returned has numgrps.
Return the number of groups created so the caller can limit the access
range accordingly.
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Daniel Wagner <wagi@kernel.org>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20250617-isolcpus-queue-counters-v1-1-13923686b54b@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
|
||
|
Eric Biggers
|
1a822ea52a |
lib/crc: Explicitly include <linux/export.h>
Fix build warnings with W=1 that started appearing after
commit
|
||
|
Eric Biggers
|
61d01fb7af |
lib/crc: Remove ARCH_HAS_* kconfig symbols
These symbols are no longer used, so remove them. Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20250607200454.73587-13-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
b10749d89f |
lib/crc: x86: Migrate optimized CRC code into lib/crc/
Move the x86-optimized CRC code from arch/x86/lib/crc* into its new location in lib/crc/x86/, and wire it up in the new way. This new way of organizing the CRC code eliminates the need to artificially split the code for each CRC variant into separate arch and generic modules, enabling better inlining and dead code elimination. For more details, see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/". Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20250607200454.73587-12-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
9b2d720e8a |
lib/crc: sparc: Migrate optimized CRC code into lib/crc/
Move the sparc-optimized CRC code from arch/sparc/lib/crc* into its new location in lib/crc/sparc/, and wire it up in the new way. This new way of organizing the CRC code eliminates the need to artificially split the code for each CRC variant into separate arch and generic modules, enabling better inlining and dead code elimination. For more details, see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/". Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20250607200454.73587-11-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
2374bf2386 |
lib/crc: s390: Migrate optimized CRC code into lib/crc/
Move the s390-optimized CRC code from arch/s390/lib/crc* into its new location in lib/crc/s390/, and wire it up in the new way. This new way of organizing the CRC code eliminates the need to artificially split the code for each CRC variant into separate arch and generic modules, enabling better inlining and dead code elimination. For more details, see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/". Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20250607200454.73587-10-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
b5943815e6 |
lib/crc: riscv: Migrate optimized CRC code into lib/crc/
Move the riscv-optimized CRC code from arch/riscv/lib/crc* into its new location in lib/crc/riscv/, and wire it up in the new way. This new way of organizing the CRC code eliminates the need to artificially split the code for each CRC variant into separate arch and generic modules, enabling better inlining and dead code elimination. For more details, see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/". Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20250607200454.73587-9-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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190c253d86 |
lib/crc: powerpc: Migrate optimized CRC code into lib/crc/
Move the powerpc-optimized CRC code from arch/powerpc/lib/crc* into its new location in lib/crc/powerpc/, and wire it up in the new way. This new way of organizing the CRC code eliminates the need to artificially split the code for each CRC variant into separate arch and generic modules, enabling better inlining and dead code elimination. For more details, see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/". Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20250607200454.73587-8-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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da4fd65773 |
lib/crc: mips: Migrate optimized CRC code into lib/crc/
Move the mips-optimized CRC code from arch/mips/lib/crc* into its new location in lib/crc/mips/, and wire it up in the new way. This new way of organizing the CRC code eliminates the need to artificially split the code for each CRC variant into separate arch and generic modules, enabling better inlining and dead code elimination. For more details, see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/". Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20250607200454.73587-7-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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b10d2d20d9 |
lib/crc: loongarch: Migrate optimized CRC code into lib/crc/
Move the loongarch-optimized CRC code from arch/loongarch/lib/crc* into its new location in lib/crc/loongarch/, and wire it up in the new way. This new way of organizing the CRC code eliminates the need to artificially split the code for each CRC variant into separate arch and generic modules, enabling better inlining and dead code elimination. For more details, see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/". Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20250607200454.73587-6-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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2b7531b2a2 |
lib/crc: arm64: Migrate optimized CRC code into lib/crc/
Move the arm64-optimized CRC code from arch/arm64/lib/crc* into its new location in lib/crc/arm64/, and wire it up in the new way. This new way of organizing the CRC code eliminates the need to artificially split the code for each CRC variant into separate arch and generic modules, enabling better inlining and dead code elimination. For more details, see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/". Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20250607200454.73587-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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530b304f00 |
lib/crc: arm: Migrate optimized CRC code into lib/crc/
Move the arm-optimized CRC code from arch/arm/lib/crc* into its new location in lib/crc/arm/, and wire it up in the new way. This new way of organizing the CRC code eliminates the need to artificially split the code for each CRC variant into separate arch and generic modules, enabling better inlining and dead code elimination. For more details, see "lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/". Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20250607200454.73587-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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0bcfca5640 |
lib/crc: Prepare for arch-optimized code in subdirs of lib/crc/
Rework how lib/crc/ supports arch-optimized code. First, instead of the arch-optimized CRC code being in arch/$(SRCARCH)/lib/, it will now be in lib/crc/$(SRCARCH)/. Second, the API functions (e.g. crc32c()), arch-optimized functions (e.g. crc32c_arch()), and generic functions (e.g. crc32c_base()) will now be part of a single module for each CRC type, allowing better inlining and dead code elimination. The second change is made possible by the first. As an example, consider CONFIG_CRC32=m on x86. We'll now have just crc32.ko instead of both crc32-x86.ko and crc32.ko. The two modules were already coupled together and always both got loaded together via direct symbol dependency, so the separation provided no benefit. Note: later I'd like to apply the same design to lib/crypto/ too, where often the API functions are out-of-line so this will work even better. In those cases, for each algorithm we currently have 3 modules all coupled together, e.g. libsha256.ko, libsha256-generic.ko, and sha256-x86.ko. We should have just one, inline things properly, and rely on the compiler's dead code elimination to decide the inclusion of the generic code instead of manually setting it via kconfig. Having arch-specific code outside arch/ was somewhat controversial when Zinc proposed it back in 2018. But I don't think the concerns are warranted. It's better from a technical perspective, as it enables the improvements mentioned above. This model is already successfully used in other places in the kernel such as lib/raid6/. The community of each architecture still remains free to work on the code, even if it's not in arch/. At the time there was also a desire to put the library code in the same files as the old-school crypto API, but that was a mistake; now that the library is separate, that's no longer a constraint either. Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20250607200454.73587-3-ebiggers@kernel.org Link: https://lore.kernel.org/r/20250612054514.142728-1-ebiggers@kernel.org Link: https://lore.kernel.org/r/20250621012221.4351-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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89a5159140 |
lib/crc: Move files into lib/crc/
Move all CRC files in lib/ into a subdirectory lib/crc/ to keep them from cluttering up the main lib/ directory. Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ingo Molnar <mingo@kernel.org> Acked-by: "Jason A. Donenfeld" <Jason@zx2c4.com> Link: https://lore.kernel.org/r/20250607200454.73587-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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f2703a104e |
lib/crc32: Remove unused combination support
Remove crc32_le_combine() and crc32_le_shift(), since they are no longer used. Although combination is an interesting thing that can be done with CRCs, it turned out that none of the users of it in the kernel were even close to being worthwhile. All were much better off simply chaining the CRCs or processing zeroes. Let's remove the CRC32 combination code for now. It can come back (potentially optimized with carryless multiplication instructions) if there is ever a case where it would actually be worthwhile. Link: https://lore.kernel.org/r/20250607032228.27868-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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22375adaa0 |
lib/crypto: mips/chacha: Fix clang build and remove unneeded byteswap
The MIPS32r2 ChaCha code has never been buildable with the clang
assembler. First, clang doesn't support the 'rotl' pseudo-instruction:
error: unknown instruction, did you mean: rol, rotr?
Second, clang requires that both operands of the 'wsbh' instruction be
explicitly given:
error: too few operands for instruction
To fix this, align the code with the real instruction set by (1) using
the real instruction 'rotr' instead of the nonstandard pseudo-
instruction 'rotl', and (2) explicitly giving both operands to 'wsbh'.
To make removing the use of 'rotl' a bit easier, also remove the
unnecessary special-casing for big endian CPUs at
.Lchacha_mips_xor_bytes. The tail handling is actually
endian-independent since it processes one byte at a time. On big endian
CPUs the old code byte-swapped SAVED_X, then iterated through it in
reverse order. But the byteswap and reverse iteration canceled out.
Tested with chacha20poly1305-selftest in QEMU using "-M malta" with both
little endian and big endian mips32r2 kernels.
Fixes:
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Eric Biggers
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74750aa78d |
lib/crypto: x86: Move arch/x86/lib/crypto/ into lib/crypto/
Move the contents of arch/x86/lib/crypto/ into lib/crypto/x86/. The new code organization makes a lot more sense for how this code actually works and is developed. In particular, it makes it possible to build each algorithm as a single module, with better inlining and dead code elimination. For a more detailed explanation, see the patchset which did this for the CRC library code: https://lore.kernel.org/r/20250607200454.73587-1-ebiggers@kernel.org/. Also see the patchset which did this for SHA-512: https://lore.kernel.org/linux-crypto/20250616014019.415791-1-ebiggers@kernel.org/ This is just a preparatory commit, which does the move to get the files into their new location but keeps them building the same way as before. Later commits will make the actual improvements to the way the arch-optimized code is integrated for each algorithm. Add a gitignore entry for the removed directory arch/x86/lib/crypto/ so that people don't accidentally commit leftover generated files. Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Link: https://lore.kernel.org/r/20250619191908.134235-9-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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a32e93e100 |
lib/crypto: sparc: Move arch/sparc/lib/crypto/ into lib/crypto/
Move the contents of arch/sparc/lib/crypto/ into lib/crypto/sparc/. The new code organization makes a lot more sense for how this code actually works and is developed. In particular, it makes it possible to build each algorithm as a single module, with better inlining and dead code elimination. For a more detailed explanation, see the patchset which did this for the CRC library code: https://lore.kernel.org/r/20250607200454.73587-1-ebiggers@kernel.org/. Also see the patchset which did this for SHA-512: https://lore.kernel.org/linux-crypto/20250616014019.415791-1-ebiggers@kernel.org/ This is just a preparatory commit, which does the move to get the files into their new location but keeps them building the same way as before. Later commits will make the actual improvements to the way the arch-optimized code is integrated for each algorithm. Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Link: https://lore.kernel.org/r/20250619191908.134235-8-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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b8456f7aaf |
lib/crypto: s390: Move arch/s390/lib/crypto/ into lib/crypto/
Move the contents of arch/s390/lib/crypto/ into lib/crypto/s390/. The new code organization makes a lot more sense for how this code actually works and is developed. In particular, it makes it possible to build each algorithm as a single module, with better inlining and dead code elimination. For a more detailed explanation, see the patchset which did this for the CRC library code: https://lore.kernel.org/r/20250607200454.73587-1-ebiggers@kernel.org/. Also see the patchset which did this for SHA-512: https://lore.kernel.org/linux-crypto/20250616014019.415791-1-ebiggers@kernel.org/ This is just a preparatory commit, which does the move to get the files into their new location but keeps them building the same way as before. Later commits will make the actual improvements to the way the arch-optimized code is integrated for each algorithm. Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Link: https://lore.kernel.org/r/20250619191908.134235-7-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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daed4fcf04 |
lib/crypto: riscv: Move arch/riscv/lib/crypto/ into lib/crypto/
Move the contents of arch/riscv/lib/crypto/ into lib/crypto/riscv/. The new code organization makes a lot more sense for how this code actually works and is developed. In particular, it makes it possible to build each algorithm as a single module, with better inlining and dead code elimination. For a more detailed explanation, see the patchset which did this for the CRC library code: https://lore.kernel.org/r/20250607200454.73587-1-ebiggers@kernel.org/. Also see the patchset which did this for SHA-512: https://lore.kernel.org/linux-crypto/20250616014019.415791-1-ebiggers@kernel.org/ This is just a preparatory commit, which does the move to get the files into their new location but keeps them building the same way as before. Later commits will make the actual improvements to the way the arch-optimized code is integrated for each algorithm. Acked-by: Ard Biesheuvel <ardb@kernel.org> Acked-by: Palmer Dabbelt <palmer@dabbelt.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Link: https://lore.kernel.org/r/20250619191908.134235-6-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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676d45aba8 |
lib/crypto: powerpc: Move arch/powerpc/lib/crypto/ into lib/crypto/
Move the contents of arch/powerpc/lib/crypto/ into lib/crypto/powerpc/. The new code organization makes a lot more sense for how this code actually works and is developed. In particular, it makes it possible to build each algorithm as a single module, with better inlining and dead code elimination. For a more detailed explanation, see the patchset which did this for the CRC library code: https://lore.kernel.org/r/20250607200454.73587-1-ebiggers@kernel.org/. Also see the patchset which did this for SHA-512: https://lore.kernel.org/linux-crypto/20250616014019.415791-1-ebiggers@kernel.org/ This is just a preparatory commit, which does the move to get the files into their new location but keeps them building the same way as before. Later commits will make the actual improvements to the way the arch-optimized code is integrated for each algorithm. Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Link: https://lore.kernel.org/r/20250619191908.134235-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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7e54e993ab |
lib/crypto: mips: Move arch/mips/lib/crypto/ into lib/crypto/
Move the contents of arch/mips/lib/crypto/ into lib/crypto/mips/. The new code organization makes a lot more sense for how this code actually works and is developed. In particular, it makes it possible to build each algorithm as a single module, with better inlining and dead code elimination. For a more detailed explanation, see the patchset which did this for the CRC library code: https://lore.kernel.org/r/20250607200454.73587-1-ebiggers@kernel.org/. Also see the patchset which did this for SHA-512: https://lore.kernel.org/linux-crypto/20250616014019.415791-1-ebiggers@kernel.org/ This is just a preparatory commit, which does the move to get the files into their new location but keeps them building the same way as before. Later commits will make the actual improvements to the way the arch-optimized code is integrated for each algorithm. Add a gitignore entry for the removed directory arch/mips/lib/crypto/ so that people don't accidentally commit leftover generated files. Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Link: https://lore.kernel.org/r/20250619191908.134235-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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61f86c70cf |
lib/crypto: arm64: Move arch/arm64/lib/crypto/ into lib/crypto/
Move the contents of arch/arm64/lib/crypto/ into lib/crypto/arm64/. The new code organization makes a lot more sense for how this code actually works and is developed. In particular, it makes it possible to build each algorithm as a single module, with better inlining and dead code elimination. For a more detailed explanation, see the patchset which did this for the CRC library code: https://lore.kernel.org/r/20250607200454.73587-1-ebiggers@kernel.org/. Also see the patchset which did this for SHA-512: https://lore.kernel.org/linux-crypto/20250616014019.415791-1-ebiggers@kernel.org/ This is just a preparatory commit, which does the move to get the files into their new location but keeps them building the same way as before. Later commits will make the actual improvements to the way the arch-optimized code is integrated for each algorithm. Add a gitignore entry for the removed directory arch/arm64/lib/crypto/ so that people don't accidentally commit leftover generated files. Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Link: https://lore.kernel.org/r/20250619191908.134235-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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4a32e5dc1d |
lib/crypto: arm: Move arch/arm/lib/crypto/ into lib/crypto/
Move the contents of arch/arm/lib/crypto/ into lib/crypto/arm/. The new code organization makes a lot more sense for how this code actually works and is developed. In particular, it makes it possible to build each algorithm as a single module, with better inlining and dead code elimination. For a more detailed explanation, see the patchset which did this for the CRC library code: https://lore.kernel.org/r/20250607200454.73587-1-ebiggers@kernel.org/. Also see the patchset which did this for SHA-512: https://lore.kernel.org/linux-crypto/20250616014019.415791-1-ebiggers@kernel.org/ This is just a preparatory commit, which does the move to get the files into their new location but keeps them building the same way as before. Later commits will make the actual improvements to the way the arch-optimized code is integrated for each algorithm. Add a gitignore entry for the removed directory arch/arm/lib/crypto/ so that people don't accidentally commit leftover generated files. Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Link: https://lore.kernel.org/r/20250619191908.134235-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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6486f2b036 |
lib/crypto: x86/sha512: Remove unnecessary checks for nblocks==0
Since sha512_blocks() is called only with nblocks >= 1, remove unnecessary checks for nblocks == 0 from the x86 SHA-512 assembly code. Link: https://lore.kernel.org/r/20250630160320.2888-16-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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484c18119f |
lib/crypto: x86/sha512: Migrate optimized SHA-512 code to library
Instead of exposing the x86-optimized SHA-512 code via x86-specific crypto_shash algorithms, instead just implement the sha512_blocks() library function. This is much simpler, it makes the SHA-512 (and SHA-384) library functions be x86-optimized, and it fixes the longstanding issue where the x86-optimized SHA-512 code was disabled by default. SHA-512 still remains available through crypto_shash, but individual architectures no longer need to handle it. To match sha512_blocks(), change the type of the nblocks parameter of the assembly functions from int to size_t. The assembly functions actually already treated it as size_t. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160320.2888-15-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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02b35bab7e |
lib/crypto: sparc/sha512: Migrate optimized SHA-512 code to library
Instead of exposing the sparc-optimized SHA-512 code via sparc-specific crypto_shash algorithms, instead just implement the sha512_blocks() library function. This is much simpler, it makes the SHA-512 (and SHA-384) library functions be sparc-optimized, and it fixes the longstanding issue where the sparc-optimized SHA-512 code was disabled by default. SHA-512 still remains available through crypto_shash, but individual architectures no longer need to handle it. To match sha512_blocks(), change the type of the nblocks parameter of the assembly function from int to size_t. The assembly function actually already treated it as size_t. Note: to see the diff from arch/sparc/crypto/sha512_glue.c to lib/crypto/sparc/sha512.h, view this commit with 'git show -M10'. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160320.2888-14-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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b7b366087e |
lib/crypto: s390/sha512: Migrate optimized SHA-512 code to library
Instead of exposing the s390-optimized SHA-512 code via s390-specific crypto_shash algorithms, instead just implement the sha512_blocks() library function. This is much simpler, it makes the SHA-512 (and SHA-384) library functions be s390-optimized, and it fixes the longstanding issue where the s390-optimized SHA-512 code was disabled by default. SHA-512 still remains available through crypto_shash, but individual architectures no longer need to handle it. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160320.2888-13-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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b59059a22c |
lib/crypto: riscv/sha512: Migrate optimized SHA-512 code to library
Instead of exposing the riscv-optimized SHA-512 code via riscv-specific crypto_shash algorithms, instead just implement the sha512_blocks() library function. This is much simpler, it makes the SHA-512 (and SHA-384) library functions be riscv-optimized, and it fixes the longstanding issue where the riscv-optimized SHA-512 code was disabled by default. SHA-512 still remains available through crypto_shash, but individual architectures no longer need to handle it. To match sha512_blocks(), change the type of the nblocks parameter of the assembly function from int to size_t. The assembly function actually already treated it as size_t. Note: to see the diff from arch/riscv/crypto/sha512-riscv64-glue.c to lib/crypto/riscv/sha512.h, view this commit with 'git show -M10'. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160320.2888-12-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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7117739ad2 |
lib/crypto: mips/sha512: Migrate optimized SHA-512 code to library
Instead of exposing the mips-optimized SHA-512 code via mips-specific crypto_shash algorithms, instead just implement the sha512_blocks() library function. This is much simpler, it makes the SHA-512 (and SHA-384) library functions be mips-optimized, and it fixes the longstanding issue where the mips-optimized SHA-512 code was disabled by default. SHA-512 still remains available through crypto_shash, but individual architectures no longer need to handle it. Note: to see the diff from arch/mips/cavium-octeon/crypto/octeon-sha512.c to lib/crypto/mips/sha512.h, view this commit with 'git show -M10'. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160320.2888-11-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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60e3f1e9b7 |
lib/crypto: arm64/sha512: Migrate optimized SHA-512 code to library
Instead of exposing the arm64-optimized SHA-512 code via arm64-specific crypto_shash algorithms, instead just implement the sha512_blocks() library function. This is much simpler, it makes the SHA-512 (and SHA-384) library functions be arm64-optimized, and it fixes the longstanding issue where the arm64-optimized SHA-512 code was disabled by default. SHA-512 still remains available through crypto_shash, but individual architectures no longer need to handle it. To match sha512_blocks(), change the type of the nblocks parameter of the assembly functions from int or 'unsigned int' to size_t. Update the ARMv8 CE assembly function accordingly. The scalar assembly function actually already treated it as size_t. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160320.2888-9-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
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24c91b62ac |
lib/crypto: arm/sha512: Migrate optimized SHA-512 code to library
Instead of exposing the arm-optimized SHA-512 code via arm-specific crypto_shash algorithms, instead just implement the sha512_blocks() library function. This is much simpler, it makes the SHA-512 (and SHA-384) library functions be arm-optimized, and it fixes the longstanding issue where the arm-optimized SHA-512 code was disabled by default. SHA-512 still remains available through crypto_shash, but individual architectures no longer need to handle it. To match sha512_blocks(), change the type of the nblocks parameter of the assembly functions from int to size_t. The assembly functions actually already treated it as size_t. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160320.2888-8-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
||
|
Eric Biggers
|
23e8b4371d |
lib/crypto: sha512: Add HMAC-SHA384 and HMAC-SHA512 support
Since HMAC support is commonly needed and is fairly simple, include it as a first-class citizen of the SHA-512 library. The API supports both incremental and one-shot computation, and either preparing the key ahead of time or just using a raw key. The implementation is much more streamlined than crypto/hmac.c. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160320.2888-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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|
Eric Biggers
|
b693c703ac |
lib/crypto: sha512: Add support for SHA-384 and SHA-512
Add basic support for SHA-384 and SHA-512 to lib/crypto/. Various in-kernel users will be able to use this instead of the old-school crypto API, which is harder to use and has more overhead. The basic support added by this commit consists of the API and its documentation, backed by a C implementation of the algorithms. sha512_block_generic() is derived from crypto/sha512_generic.c. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250630160320.2888-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org> |
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Eric Biggers
|
e49a3eac92 |
lib/crypto: Explicitly include <linux/export.h>
Fix build warnings with W=1 that started appearing after
commit
|
||
|
Linus Torvalds
|
0fd39af24e |
16 hotfixes. 6 are cc:stable and the remainder address post-6.15 issues
or aren't considered necessary for -stable kernels. 5 are for MM. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaF8vtQAKCRDdBJ7gKXxA jlK9AP9Syx5isoE7MAMKjr9iI/2z+NRaCCro/VM4oQk8m2cNFgD/ZsL9YMhjZlcL bMIVUZ9E+yf1w9dLeHLoDba+pnF7Wwc= =vdkO -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2025-06-27-16-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "16 hotfixes. 6 are cc:stable and the remainder address post-6.15 issues or aren't considered necessary for -stable kernels. 5 are for MM" * tag 'mm-hotfixes-stable-2025-06-27-16-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: MAINTAINERS: add Lorenzo as THP co-maintainer mailmap: update Duje Mihanović's email address selftests/mm: fix validate_addr() helper crashdump: add CONFIG_KEYS dependency mailmap: correct name for a historical account of Zijun Hu mailmap: add entries for Zijun Hu fuse: fix runtime warning on truncate_folio_batch_exceptionals() scripts/gdb: fix dentry_name() lookup mm/damon/sysfs-schemes: free old damon_sysfs_scheme_filter->memcg_path on write mm/alloc_tag: fix the kmemleak false positive issue in the allocation of the percpu variable tag->counters lib/group_cpus: fix NULL pointer dereference from group_cpus_evenly() mm/hugetlb: remove unnecessary holding of hugetlb_lock MAINTAINERS: add missing files to mm page alloc section MAINTAINERS: add tree entry to mm init block mm: add OOM killer maintainer structure fs/proc/task_mmu: fix PAGE_IS_PFNZERO detection for the huge zero folio |
||
|
Linus Torvalds
|
867b9987a3 |
RISC-V Fixes for 5.16-rc4
* .rodata is no longer linkd into PT_DYNAMIC, it was not supposed to be there in the first place and resultst in invalid (but unused) entries. This manifests as at least warnings in llvm-readelf. * A fix for runtime constants with all-0 upper 32-bits. This should only manifest on MMU=n kernels. * A fix for context save/restore on systems using the T-Head vector extensions. * A fix for a conflicting "+r"/"r" register constraint in the VDSO getrandom syscall wrapper, which is undefined behavior in clang. * A fix for a missing register clobber in the RVV raid6 implementation. This manifests as a NULL pointer reference on some compilers, but could trigger in other ways. * Misaligned accesses from userspace at faulting addresses are now handled correctly. * A fix for an incorrect optimization that allowed access_ok() to mark invalid addresses as accessible, which can result in userspace triggering BUG()s. * A few fixes for build warnings, and an update to Drew's email address. -----BEGIN PGP SIGNATURE----- iQJNBAABCAA3FiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAmhe80kZHHBhbG1lcmRh YmJlbHRAZ29vZ2xlLmNvbQAKCRAuExnzX7sYicV6EACT/5384tdpYSQ6WQ4K2mT2 XxPbrYTJ4jrhZMugnfe1LHBokeBGoGPRK11Dr/PyNJ71oeeDF7opv0kxAfqsiOO3 QrwUE/4zhGgEzs7Z6D8UgYiqVDfb4aMU+oZ0qIfy+r+cB4F9M65TIejdVj99V6Hu V9cjJ4ABM9KfaZhD5BvoqflblYtwuSg/VYsUmZH6aolDyadzTy4rWcPk1jdFJDQt tIEsXjc92KNAKGSFe8DDZjjhM216Th/nUsZcxI2DLRQjjHPNEthkAgLNltQGocU9 gJ8U3IqfazgnqcZAlrr7BXlWYlBFH/wGXVsxuBL5LPov19RcTkjl2PWH7T08yyuv lCGXrfkz3hSu+Sa9A40w4LptrKNWUEFJztaPkQ68gn1ZQP7KB/rsWp+82dCqhT35 RNxmSznLyTsHFRXR2n9fZrWX/F/LwxY7vaH7cTZUDkMHI8F7WP/3tlihxPCQaUHD dIb+osch8puxG3YjO7H99WrpJamNNw3+L1l2lXtXTRmXdxE+x7fyatmHX98mY8IC 7NXGOdNNIEvv4i9vzSphYQHBOT3tBVfz40z878qfSL3xYHG3ZLMIsWuynaWDMI73 QprwAPmdFxdmJrHyIY6gIiyrscNHz5WLMjkG4K+jXlsBBmDxJMAY5zzNdFoeUVDz tjnDY4DYc4fCnteKSA/hpw== =42TO -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V Fixes for 5.16-rc4 - .rodata is no longer linkd into PT_DYNAMIC. It was not supposed to be there in the first place and resulted in invalid (but unused) entries. This manifests as at least warnings in llvm-readelf - A fix for runtime constants with all-0 upper 32-bits. This should only manifest on MMU=n kernels - A fix for context save/restore on systems using the T-Head vector extensions - A fix for a conflicting "+r"/"r" register constraint in the VDSO getrandom syscall wrapper, which is undefined behavior in clang - A fix for a missing register clobber in the RVV raid6 implementation. This manifests as a NULL pointer reference on some compilers, but could trigger in other ways - Misaligned accesses from userspace at faulting addresses are now handled correctly - A fix for an incorrect optimization that allowed access_ok() to mark invalid addresses as accessible, which can result in userspace triggering BUG()s - A few fixes for build warnings, and an update to Drew's email address * tag 'riscv-for-linus-5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: export boot_cpu_hartid Revert "riscv: Define TASK_SIZE_MAX for __access_ok()" riscv: Fix sparse warning in vendor_extensions/sifive.c Revert "riscv: misaligned: fix sleeping function called during misaligned access handling" MAINTAINERS: Update Drew Fustini's email address RISC-V: uaccess: Wrap the get_user_8 uaccess macro raid6: riscv: Fix NULL pointer dereference caused by a missing clobber RISC-V: vDSO: Correct inline assembly constraints in the getrandom syscall wrapper riscv: vector: Fix context save/restore with xtheadvector riscv: fix runtime constant support for nommu kernels riscv: vdso: Exclude .rodata from the PT_DYNAMIC segment |
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Marie Zhussupova
|
5ac244b9cc |
kunit: Make default kunit_test timeout configurable via both a module parameter and a Kconfig option
To accommodate varying hardware performance and use cases, the default kunit test case timeout (currently 300 seconds) is now configurable. Users can adjust the timeout by either setting the 'timeout' module parameter or the KUNIT_DEFAULT_TIMEOUT Kconfig option to their desired timeout in seconds. Link: https://lore.kernel.org/r/20250626171730.1765004-1-marievic@google.com Signed-off-by: Marie Zhussupova <marievic@google.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Jakub Kicinski
|
82b6eef810 |
Merge branch 'ref_tracker-fix'
Merge a fix from Jeff from a stable commit ID: * ref_tracker: do xarray and workqueue job initializations earlier Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Jeff Layton
|
f4e6aefb9c |
ref_tracker: do xarray and workqueue job initializations earlier
The kernel test robot reported an oops that occurred when attempting to
deregister a dentry from the xarray during subsys_initcall().
The ref_tracker xarrays and workqueue job are being initialized in
late_initcall() which is too late. Move those to postcore_initcall()
instead.
Fixes:
|
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Jakub Kicinski
|
28aa52b618 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.16-rc4). Conflicts: Documentation/netlink/specs/mptcp_pm.yaml |
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Hao Ge
|
f5769359c5 |
mm/alloc_tag: fix the kmemleak false positive issue in the allocation of the percpu variable tag->counters
When loading a module, as long as the module has memory allocation
operations, kmemleak produces a false positive report that resembles the
following:
unreferenced object (percpu) 0x7dfd232a1650 (size 16):
comm "modprobe", pid 1301, jiffies 4294940249
hex dump (first 16 bytes on cpu 2):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace (crc 0):
kmemleak_alloc_percpu+0xb4/0xd0
pcpu_alloc_noprof+0x700/0x1098
load_module+0xd4/0x348
codetag_module_init+0x20c/0x450
codetag_load_module+0x70/0xb8
load_module+0xef8/0x1608
init_module_from_file+0xec/0x158
idempotent_init_module+0x354/0x608
__arm64_sys_finit_module+0xbc/0x150
invoke_syscall+0xd4/0x258
el0_svc_common.constprop.0+0xb4/0x240
do_el0_svc+0x48/0x68
el0_svc+0x40/0xf8
el0t_64_sync_handler+0x10c/0x138
el0t_64_sync+0x1ac/0x1b0
This is because the module can only indirectly reference
alloc_tag_counters through the alloc_tag section, which misleads kmemleak.
However, we don't have a kmemleak ignore interface for percpu allocations
yet. So let's create one and invoke it for tag->counters.
[gehao@kylinos.cn: fix build error when CONFIG_DEBUG_KMEMLEAK=n, s/igonore/ignore/]
Link: https://lkml.kernel.org/r/20250620093102.2416767-1-hao.ge@linux.dev
Link: https://lkml.kernel.org/r/20250619183154.2122608-1-hao.ge@linux.dev
Fixes:
|
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|
Yu Kuai
|
df831e9773 |
lib/group_cpus: fix NULL pointer dereference from group_cpus_evenly()
While testing null_blk with configfs, echo 0 > poll_queues will trigger
following panic:
BUG: kernel NULL pointer dereference, address: 0000000000000010
Oops: Oops: 0000 [#1] SMP NOPTI
CPU: 27 UID: 0 PID: 920 Comm: bash Not tainted 6.15.0-02023-gadbdb95c8696-dirty #1238 PREEMPT(undef)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014
RIP: 0010:__bitmap_or+0x48/0x70
Call Trace:
<TASK>
__group_cpus_evenly+0x822/0x8c0
group_cpus_evenly+0x2d9/0x490
blk_mq_map_queues+0x1e/0x110
null_map_queues+0xc9/0x170 [null_blk]
blk_mq_update_queue_map+0xdb/0x160
blk_mq_update_nr_hw_queues+0x22b/0x560
nullb_update_nr_hw_queues+0x71/0xf0 [null_blk]
nullb_device_poll_queues_store+0xa4/0x130 [null_blk]
configfs_write_iter+0x109/0x1d0
vfs_write+0x26e/0x6f0
ksys_write+0x79/0x180
__x64_sys_write+0x1d/0x30
x64_sys_call+0x45c4/0x45f0
do_syscall_64+0xa5/0x240
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Root cause is that numgrps is set to 0, and ZERO_SIZE_PTR is returned from
kcalloc(), and later ZERO_SIZE_PTR will be deferenced.
Fix the problem by checking numgrps first in group_cpus_evenly(), and
return NULL directly if numgrps is zero.
[yukuai3@huawei.com: also fix the non-SMP version]
Link: https://lkml.kernel.org/r/20250620010958.1265984-1-yukuai1@huaweicloud.com
Link: https://lkml.kernel.org/r/20250619132655.3318883-1-yukuai1@huaweicloud.com
Fixes:
|
||
|
Ujwal Jain
|
63d0a91231 |
kunit: Adjust kunit_test timeout based on test_{suite,case} speed
Currently, the in-kernel kunit test case timeout is 300 seconds. (There is a separate timeout mechanism for the whole test execution in kunit.py, but that's unrelated.) However, tests marked 'slow' or 'very slow' may timeout, particularly on slower machines. Implement a multiplier to the test-case timeout, so that slower tests have longer to complete: - DEFAULT -> 1x default timeout - KUNIT_SPEED_SLOW -> 3x default timeout - KUNIT_SPEED_VERY_SLOW -> 12x default timeout A further change is planned to allow user configuration of the default/base timeout to allow people with faster or slower machines to adjust these to their use-cases. Link: https://lore.kernel.org/r/20250614084711.2654593-2-davidgow@google.com Signed-off-by: Ujwal Jain <ujwaljain@google.com> Co-developed-by: David Gow <davidgow@google.com> Signed-off-by: David Gow <davidgow@google.com> Reviewed-by: Rae Moar <rmoar@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Thadeu Lima de Souza Cascardo
|
74d8361be3 |
char: misc: add test cases
Add test cases for static and dynamic minor number allocation and
deallocation.
While at it, improve description and test suite name.
Some of the cases include:
- that static and dynamic allocation reserved the expected minors.
- that registering duplicate minors or duplicate names will fail.
- that failing to create a sysfs file (due to duplicate names) will
deallocate the dynamic minor correctly.
- that dynamic allocation does not allocate a minor number in the static
range.
- that there are no collisions when mixing dynamic and static allocations.
- that opening devices with various minor device numbers work.
- that registering a static number in the dynamic range won't conflict with
a dynamic allocation.
This last test verifies the bug fixed by commit
|
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|
Paul E. McKenney
|
5c23ce0cb8 |
lib: Add stress test for ratelimit
Add a simple stress test for lib/ratelimit.c To run on x86: ./tools/testing/kunit/kunit.py run --arch x86_64 --kconfig_add CONFIG_RATELIMIT_KUNIT_TEST=y --kconfig_add CONFIG_SMP=y --qemu_args "-smp 4" lib_ratelimit On a 16-CPU system, the "4" in "-smp 4" can be varied between 1 and 8. Larger numbers have higher probabilities of introducing delays that break the smoke test. In the extreme case, increasing the number to larger than the number of CPUs in the underlying system is an excellent way to get a test failure. Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Jon Pan-Doh <pandoh@google.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Karolina Stolarek <karolina.stolarek@oracle.com> |
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|
Petr Mladek
|
5a5c5a3de1 |
lib: Make the ratelimit test more reliable
The selftest fails most of the times when running in qemu with a kernel configured with CONFIG_HZ = 250: > test_ratelimit_smoke: 1 callbacks suppressed > # test_ratelimit_smoke: ASSERTION FAILED at lib/tests/test_ratelimit.c:28 > Expected ___ratelimit(&testrl, "test_ratelimit_smoke") == (false), but > ___ratelimit(&testrl, "test_ratelimit_smoke") == 1 (0x1) > (false) == 0 (0x0) Try to make the test slightly more reliable by calling the problematic ratelimit in the middle of the interval. Signed-off-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
||
|
Paul E. McKenney
|
d19e9fa61f |
lib: Add trivial kunit test for ratelimit
Add a simple single-threaded smoke test for lib/ratelimit.c To run on x86: make ARCH=x86_64 mrproper ./tools/testing/kunit/kunit.py run --arch x86_64 --kconfig_add CONFIG_RATELIMIT_KUNIT_TEST=y --kconfig_add CONFIG_SMP=y lib_ratelimit This will fail on old ___ratelimit(), and subsequent patches provide the fixes that are required. [ paulmck: Apply timeout and kunit feedback from Petr Mladek. ] Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Jon Pan-Doh <pandoh@google.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Karolina Stolarek <karolina.stolarek@oracle.com> |
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|
Arnd Bergmann
|
7df6c02455 |
lib: test_objagg: split test_hints_case() into two functions
With sanitizers enabled, this function uses a lot of stack, causing a harmless warning: lib/test_objagg.c: In function 'test_hints_case.constprop': lib/test_objagg.c:994:1: error: the frame size of 1440 bytes is larger than 1408 bytes [-Werror=frame-larger-than=] Most of this is from the two 'struct world' structures. Since most of the work in this function is duplicated for the two, split it up into separate functions that each use one of them. The combined stack usage is still the same here, but there is no warning any more, and the code is still safe because of the known call chain. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://patch.msgid.link/20250620111907.3395296-1-arnd@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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|
Linus Torvalds
|
c06944560a |
20 hotfixes. 7 are cc:stable and the remainder address post-6.15 issues
or aren't considered necessary for -stable kernels. Only 4 are for MM.
- The 3 patch series `Revert "bcache: update min_heap_callbacks to use
default builtin swap"' from Kuan-Wei Chiu backs out the author's recent
min_heap changes due to a performance regression. A fix for this
regression has been developed but we felt it best to go back to the
known-good version to give the new code more bake time.
- A lot of MAINTAINERS maintenance. I like to get these changes
upstreamed promptly because they can't break things and more
accurate/complete MAINTAINERS info hopefully improves the speed and
accuracy of our responses to submitters and reporters.
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaFizWwAKCRDdBJ7gKXxA
jhivAQDGQXgzgzPCu/5/fTQjjq+D/8M2QjGxNy4o1itKoK+fYAEAzQGTL/8ay9FY
yhcipreU4A3lrxf94iOidiBCYkZaOgk=
=kFFb
-----END PGP SIGNATURE-----
Merge tag 'mm-hotfixes-stable-2025-06-22-18-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"20 hotfixes. 7 are cc:stable and the remainder address post-6.15
issues or aren't considered necessary for -stable kernels. Only 4 are
for MM.
- The series `Revert "bcache: update min_heap_callbacks to use
default builtin swap"' from Kuan-Wei Chiu backs out the author's
recent min_heap changes due to a performance regression.
A fix for this regression has been developed but we felt it best to
go back to the known-good version to give the new code more bake
time.
- A lot of MAINTAINERS maintenance.
I like to get these changes upstreamed promptly because they can't
break things and more accurate/complete MAINTAINERS info hopefully
improves the speed and accuracy of our responses to submitters and
reporters"
* tag 'mm-hotfixes-stable-2025-06-22-18-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
MAINTAINERS: add additional mmap-related files to mmap section
MAINTAINERS: add memfd, shmem quota files to shmem section
MAINTAINERS: add stray rmap file to mm rmap section
MAINTAINERS: add hugetlb_cgroup.c to hugetlb section
MAINTAINERS: add further init files to mm init block
MAINTAINERS: update maintainers for HugeTLB
maple_tree: fix MA_STATE_PREALLOC flag in mas_preallocate()
MAINTAINERS: add missing test files to mm gup section
MAINTAINERS: add missing mm/workingset.c file to mm reclaim section
selftests/mm: skip uprobe vma merge test if uprobes are not enabled
bcache: remove unnecessary select MIN_HEAP
Revert "bcache: remove heap-related macros and switch to generic min_heap"
Revert "bcache: update min_heap_callbacks to use default builtin swap"
selftests/mm: add configs to fix testcase failure
kho: initialize tail pages for higher order folios properly
MAINTAINERS: add linux-mm@ list to Kexec Handover
mm: userfaultfd: fix race of userfaultfd_move and swap cache
mm/gup: revert "mm: gup: fix infinite loop within __get_longterm_locked"
selftests/mm: increase timeout from 180 to 900 seconds
mm/shmem, swap: fix softlockup with mTHP swapin
|
||
|
Linus Torvalds
|
0fa5248255 |
This push fixes a regression in ahash (broken fallback finup)
and reinstates a Kconfig option to control the extra self-tests. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEn51F/lCuNhUwmDeSxycdCkmxi6cFAmhSgQIACgkQxycdCkmx i6eWig//aNg4YL30eTh41eTWTCiA1PLZpyOE2/Wz7q/Yg4M0Refn85A+tREm18q+ uwuZKAoFz8VaF0trqSQQ3PFzZaJWWRn0yLqeToxGyd7sY9kBh93FdQLub8wTxO0F qDPLnAR+Gt7VAGcYSjhyB/TCsJ5h6oRN87qMIr8g807SiIB6mHiuXxJAAKy1U7OD cXafp3HTkzUjgk/wbj7qSK6HJR3Cq3o/3JmsE/D7yvJRH1Bx7mNoiRpEX17CkgQX qVZmLj8lE4HzFpTLKBAY8sXlzxscN+rHnS5WUhTqWL1hAI2b52p1moJPzT9QM/Zb yI+x1DbO21Pvr4mZJ/hX18Y9VvTbea0hkD/wFD+hKJyQ9j70B8/bBeT/sOxKqDZn 0G1o9UyVTNdw4m2m/6lYJBgG0yiuD3hZID+Wjgq6lOsfoVBThU3CWq11NW98HQKz 0VUWztcG7JTqM1wUwwjlMXnm8+WKwiuYqYZCwBl8o0Ii29/Sm0pGMXtiDqmWFWLA a4FJNFxiKEfVA95yRuRPfEM7KMwRWdw2C9YGe6hk3kcUbfDYSJykUme/USFzz8X8 5lmwWESNggggQEw9BxUAILIzRZwsDhCakgRjd11JRbNjrNTwXIbP9+nv+LH91mPK zm5DJqyqSUVr2iXeQYYH/etyRsMX+dAuWPrFvvjuDBb8/fgEce4= =6/TP -----END PGP SIGNATURE----- Merge tag 'v6.16-p5' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto fixes from Herbert Xu: "This fixes a regression in ahash (broken fallback finup) and reinstates a Kconfig option to control the extra self-tests" * tag 'v6.16-p5' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: ahash - Fix infinite recursion in ahash_def_finup crypto: testmgr - reinstate kconfig control over full self-tests |
||
|
Liam R. Howlett
|
fba46a5d83 |
maple_tree: fix MA_STATE_PREALLOC flag in mas_preallocate()
Temporarily clear the preallocation flag when explicitly requesting
allocations. Pre-existing allocations are already counted against the
request through mas_node_count_gfp(), but the allocations will not happen
if the MA_STATE_PREALLOC flag is set. This flag is meant to avoid
re-allocating in bulk allocation mode, and to detect issues with
preallocation calculations.
The MA_STATE_PREALLOC flag should also always be set on zero allocations
so that detection of underflow allocations will print a WARN_ON() during
consumption.
User visible effect of this flaw is a WARN_ON() followed by a null pointer
dereference when subsequent requests for larger number of nodes is
ignored, such as the vma merge retry in mmap_region() caused by drivers
altering the vma flags (which happens in v6.6, at least)
Link: https://lkml.kernel.org/r/20250616184521.3382795-3-Liam.Howlett@oracle.com
Fixes:
|
||
|
Jakub Kicinski
|
77f08133bc |
Merge branch 'ref_tracker-add-ability-to-register-a-debugfs-file-for-a-ref_tracker_dir'
Jeff Layton says: ==================== ref_tracker: add ability to register a debugfs file for a ref_tracker_dir For those just joining in, this series adds a new top-level "ref_tracker" debugfs directory, and has each ref_tracker_dir register a file in there as part of its initialization. It also adds the ability to register a symlink with a more human-usable name that points to the file, and does some general cleanup of how the ref_tracker object names are handled. v14: https://lore.kernel.org/20250610-reftrack-dbgfs-v14-0-efb532861428@kernel.org v13: https://lore.kernel.org/20250603-reftrack-dbgfs-v13-0-7b2a425019d8@kernel.org v12: https://lore.kernel.org/20250529-reftrack-dbgfs-v12-0-11b93c0c0b6e@kernel.org v11: https://lore.kernel.org/20250528-reftrack-dbgfs-v11-0-94ae0b165841@kernel.org v10: https://lore.kernel.org/20250527-reftrack-dbgfs-v10-0-dc55f7705691@kernel.org v9: https://lore.kernel.org/20250509-reftrack-dbgfs-v9-0-8ab888a4524d@kernel.org v8: https://lore.kernel.org/20250507-reftrack-dbgfs-v8-0-607717d3bb98@kernel.org v7: https://lore.kernel.org/20250505-reftrack-dbgfs-v7-0-f78c5d97bcca@kernel.org v6: https://lore.kernel.org/20250430-reftrack-dbgfs-v6-0-867c29aff03a@kernel.org v5: https://lore.kernel.org/20250428-reftrack-dbgfs-v5-0-1cbbdf2038bd@kernel.org v4: https://lore.kernel.org/20250418-reftrack-dbgfs-v4-0-5ca5c7899544@kernel.org v3: https://lore.kernel.org/20250417-reftrack-dbgfs-v3-0-c3159428c8fb@kernel.org v2: https://lore.kernel.org/20250415-reftrack-dbgfs-v2-0-b18c4abd122f@kernel.org v1: https://lore.kernel.org/20250414-reftrack-dbgfs-v1-0-f03585832203@kernel.org ==================== Link: https://patch.msgid.link/20250618-reftrack-dbgfs-v15-0-24fc37ead144@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jeff Layton
|
707bd05be7 |
ref_tracker: eliminate the ref_tracker_dir name field
Now that we have dentries and the ability to create meaningful symlinks to them, don't keep a name string in each tracker. Switch the output format to print "class@address", and drop the name field. Also, add a kerneldoc header for ref_tracker_dir_init(). Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20250618-reftrack-dbgfs-v15-9-24fc37ead144@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jeff Layton
|
d04992dc86 |
ref_tracker: add a way to create a symlink to the ref_tracker_dir debugfs file
Add the ability for a subsystem to add a user-friendly symlink that points to a ref_tracker_dir's debugfs file. Add a separate debugfs_symlinks xarray and use that to track symlinks. The reaper workqueue job will remove symlinks before their corresponding dentries. Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20250618-reftrack-dbgfs-v15-7-24fc37ead144@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jeff Layton
|
65b584f536 |
ref_tracker: automatically register a file in debugfs for a ref_tracker_dir
Currently, there is no convenient way to see the info that the ref_tracking infrastructure collects. Attempt to create a file in debugfs when called from ref_tracker_dir_init(). The file is given the name "class@%px", as having the unmodified address is helpful for debugging. This should be safe since this directory is only accessible by root While ref_tracker_dir_init() is generally called from a context where sleeping is OK, ref_tracker_dir_exit() can be called from anywhere. Thus, dentry cleanup must be handled asynchronously. Add a new global xarray that has entries with the ref_tracker_dir pointer as the index and the corresponding debugfs dentry pointer as the value. Instead of removing the debugfs dentry, have ref_tracker_dir_exit() set a mark on the xarray entry and schedule a workqueue job. The workqueue job then walks the xarray looking for marked entries, and removes their xarray entries and the debugfs dentries. Because of this, the debugfs dentry can outlive the corresponding ref_tracker_dir. Have ref_tracker_debugfs_show() take extra care to ensure that it's safe to dereference the dir pointer before using it. Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20250618-reftrack-dbgfs-v15-6-24fc37ead144@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jeff Layton
|
f6dbe294a1 |
ref_tracker: allow pr_ostream() to print directly to a seq_file
Allow pr_ostream to also output directly to a seq_file without an intermediate buffer. The first caller of +ref_tracker_dir_seq_print() will come in a later patch, so mark that __maybe_unused for now. That designation will be removed once it is used. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20250618-reftrack-dbgfs-v15-5-24fc37ead144@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jeff Layton
|
aa7d26c3c3 |
ref_tracker: add a static classname string to each ref_tracker_dir
A later patch in the series will be adding debugfs files for each ref_tracker that get created in ref_tracker_dir_init(). The format will be "class@%px". The current "name" string can vary between ref_tracker_dir objects of the same type, so it's not suitable for this purpose. Add a new "class" string to the ref_tracker dir that describes the the type of object (sans any individual info for that object). Also, in the i915 driver, gate the creation of debugfs files on whether the dentry pointer is still set to NULL. CI has shown that the ref_tracker_dir can be initialized more than once. Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20250618-reftrack-dbgfs-v15-4-24fc37ead144@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jeff Layton
|
49c94af071 |
ref_tracker: have callers pass output function to pr_ostream()
In a later patch, we'll be adding a 3rd mechanism for outputting ref_tracker info via seq_file. Instead of a conditional, have the caller set a pointer to an output function in struct ostream. As part of this, the log prefix must be explicitly passed in, as it's too late for the pr_fmt macro. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20250618-reftrack-dbgfs-v15-3-24fc37ead144@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jeff Layton
|
e209f9193a |
ref_tracker: add a top level debugfs directory for ref_tracker
Add a new "ref_tracker" directory in debugfs. Each individual refcount tracker can register files under there to display info about currently-held references. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Krzysztof Karas <krzysztof.karas@intel.com> Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20250618-reftrack-dbgfs-v15-2-24fc37ead144@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jeff Layton
|
7d02ba9663 |
ref_tracker: don't use %pK in pr_ostream() output
As Thomas Weißschuh points out [1], it is now preferable to use %p instead of hashed pointers with printk(), since raw pointers should no longer be leaked into the kernel log. Change the ref_tracker infrastructure to use %p instead of %pK in its formats. [1]: https://lore.kernel.org/netdev/20250414-restricted-pointers-net-v1-0-12af0ce46cdd@linutronix.de/ Reviewed-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Reviewed-by: Krzysztof Karas <krzysztof.karas@intel.com> Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://patch.msgid.link/20250618-reftrack-dbgfs-v15-1-24fc37ead144@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Linus Torvalds
|
5c8013ae2e |
Including fixes from wireless. The ath12k fix to avoid FW crashes
requires adding support for a number of new FW commands so
it's quite large in terms of LoC. The rest is relatively small.
Current release - fix to a fix:
- ptp: fix breakage after ptp_vclock_in_use() rework
Current release - regressions:
- openvswitch: allocate struct ovs_pcpu_storage dynamically, static
allocation may exhaust module loader limit on smaller systems
Previous releases - regressions:
- tcp: fix tcp_packet_delayed() for peers with no selective ACK support
Previous releases - always broken:
- wifi: ath12k: don't activate more links than firmware supports
- tcp: make sure sockets open via passive TFO have valid NAPI ID
- eth: bnxt_en: update MRU and RSS table of RSS contexts on queue reset,
prevent Rx queues from silently hanging after queue reset
- NFC: uart: set tty->disc_data only in success path
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from wireless.
The ath12k fix to avoid FW crashes requires adding support for a
number of new FW commands so it's quite large in terms of LoC. The
rest is relatively small.
Current release - fix to a fix:
- ptp: fix breakage after ptp_vclock_in_use() rework
Current release - regressions:
- openvswitch: allocate struct ovs_pcpu_storage dynamically, static
allocation may exhaust module loader limit on smaller systems
Previous releases - regressions:
- tcp: fix tcp_packet_delayed() for peers with no selective ACK
support
Previous releases - always broken:
- wifi: ath12k: don't activate more links than firmware supports
- tcp: make sure sockets open via passive TFO have valid NAPI ID
- eth: bnxt_en: update MRU and RSS table of RSS contexts on queue
reset, prevent Rx queues from silently hanging after queue reset
- NFC: uart: set tty->disc_data only in success path"
* tag 'net-6.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (59 commits)
net: airoha: Differentiate hwfd buffer size for QDMA0 and QDMA1
net: airoha: Compute number of descriptors according to reserved memory size
tools: ynl: fix mixing ops and notifications on one socket
net: atm: fix /proc/net/atm/lec handling
net: atm: add lec_mutex
mlxbf_gige: return EPROBE_DEFER if PHY IRQ is not available
net: airoha: Always check return value from airoha_ppe_foe_get_entry()
NFC: nci: uart: Set tty->disc_data only in success path
calipso: Fix null-ptr-deref in calipso_req_{set,del}attr().
MAINTAINERS: Remove Shannon Nelson from MAINTAINERS file
net: lan743x: fix potential out-of-bounds write in lan743x_ptp_io_event_clock_get()
eth: fbnic: avoid double free when failing to DMA-map FW msg
tcp: fix passive TFO socket having invalid NAPI ID
selftests: net: add test for passive TFO socket NAPI ID
selftests: net: add passive TFO test binary
selftests: netdevsim: improve lib.sh include in peer.sh
tipc: fix null-ptr-deref when acquiring remote ip of ethernet bearer
Octeontx2-pf: Fix Backpresure configuration
net: ftgmac100: select FIXED_PHY
net: ethtool: remove duplicate defines for family info
...
|
||
|
Linus Torvalds
|
61f4769aff |
Crypto library fixes for v6.16-rc3
- Fix a regression in the arm64 Poly1305 code - Fix a couple compiler warnings -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQSacvsUNc7UX4ntmEPzXCl4vpKOKwUCaFMXvhQcZWJpZ2dlcnNA Z29vZ2xlLmNvbQAKCRDzXCl4vpKOK1wvAP4mnXzTFhaGjaz/ZXwnD++H69s/rKH+ EKrNpcqYiwnn2wD/RLREXAnkrU2WRZCSI4H1D2J9NbQe+X9xZ7ieJpsPNgM= =AXpO -----END PGP SIGNATURE----- Merge tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux Pull crypto library fixes from Eric Biggers: - Fix a regression in the arm64 Poly1305 code - Fix a couple compiler warnings * tag 'libcrypto-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: lib/crypto/poly1305: Fix arm64's poly1305_blocks_arch() lib/crypto/curve25519-hacl64: Disable KASAN with clang-17 and older lib/crypto: Annotate crypto strings with nonstring |
||
|
Tzung-Bi Shih
|
e42ad39318 |
kunit: Add test for static stub
__kunit_activate_static_stub() works effectively as
kunit_deactivate_static_stub() if `replacement_addr` is NULL.
Add a test case to catch the issue discovered in
commit
|
||
|
Heiko Carstens
|
7ecc694883 |
s390/drivers: Remove unnecessary include <linux/export.h>
Remove include <linux/export.h> from all files which do not contain an
EXPORT_SYMBOL().
See commit
|
||
|
Simon Horman
|
1224b218a4 |
pldmfw: Select CRC32 when PLDMFW is selected
pldmfw calls crc32 code and depends on it being enabled, else there is a link error as follows. So PLDMFW should select CRC32. lib/pldmfw/pldmfw.o: In function `pldmfw_flash_image': pldmfw.c:(.text+0x70f): undefined reference to `crc32_le_base' This problem was introduced by commit |
||
|
Nathan Chancellor
|
2f13daee2a |
lib/crypto/curve25519-hacl64: Disable KASAN with clang-17 and older
After commit
|
||
|
Kees Cook
|
e202196b8a |
lib/crypto: Annotate crypto strings with nonstring
Annotate various keys, ivs, and other byte arrays with __nonstring so
that static initializers will not complain about truncating the trailing
NUL byte under GCC 15 with -Wunterminated-string-initialization enabled.
Silences many warnings like:
../lib/crypto/aesgcm.c:642:27: warning: initializer-string for array of 'unsigned char' truncates NUL terminator but destination lacks 'nonstring' attribute (13 chars into 12 available) [-Wunterminated-string-initialization]
642 | .iv = "\xca\xfe\xba\xbe\xfa\xce\xdb\xad"
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Kees Cook <kees@kernel.org>
Link: https://lore.kernel.org/r/20250529173113.work.760-kees@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
|
||
|
Eric Biggers
|
ac90aad0e9 |
crypto: testmgr - reinstate kconfig control over full self-tests
Commit |
||
|
Ingo Molnar
|
687fac9d1b |
bugs/core: Introduce the CONFIG_DEBUG_BUGVERBOSE_DETAILED Kconfig switch
Allow configurability of the inclusion of more detailed WARN_ON() strings, to be implemented in subsequent commits. Since the full cost will be around 100K more memory on an x86 defconfig, disable it by default. Provide the WARN_CONDITION_STR() macro to allow the conditional passing of extra strings to lower level BUG/WARN handlers. Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: linux-arch@vger.kernel.org Link: https://lore.kernel.org/r/20250515124644.2958810-4-mingo@kernel.org |
||
|
Chunyan Zhang
|
bc75552b80
|
raid6: riscv: Fix NULL pointer dereference caused by a missing clobber
When running the raid6 user-space test program on RISC-V QEMU, there's a
segmentation fault which seems caused by accessing a NULL pointer,
which is the pointer variable p/q in raid6_rvv*_gen/xor_syndrome_real(),
p/q should have been equal to dptr[x], but when I use GDB command to
see its value, which was 0x10 like below:
"
Program received signal SIGSEGV, Segmentation fault.
0x0000000000011062 in raid6_rvv2_xor_syndrome_real (disks=<optimized out>, start=0, stop=<optimized out>, bytes=4096, ptrs=<optimized out>) at rvv.c:386
(gdb) p p
$1 = (u8 *) 0x10 <error: Cannot access memory at address 0x10>
"
The issue was found to be related with:
1) Compile optimization
There's no segmentation fault if compiling the raid6test program with
the optimization flag -O0.
2) The RISC-V vector command vsetvli
If not used t0 as the first parameter in vsetvli, there's no
segmentation fault either.
This patch selects the 2nd solution to fix the issue.
[Palmer: The actual issue here is a missing clobber in the vsetvli code.
It's a little tricky: we've already probed for VLENB so we don't need to
look at the output register, we just need to have an X register in the
instruction as that's the form required to actually set VL. Thus we
clobber a register, and without describing that we end up breaking
compilers.]
Fixes:
|
||
|
Randy Dunlap
|
331843c845 |
scatterlist: fix extraneous '@'-sign kernel-doc notation
Using "@argname@" in kernel-doc produces "argname****" (with "argname" in bold) in the generated html output, so use the expected kernel-doc notation of just "@argname" instead. "Fixes:" lines are added in case Matthew's patch [1] is backported. Link: https://lkml.kernel.org/r/20250605002337.2842659-1-rdunlap@infradead.org Link: https://lore.kernel.org/linux-doc/3bc4e779-7a79-42c1-8867-024f643a22fc@infradead.org/T/#m5d2bd9d21fb34f297aa4e7db069f09bc27b89007 [1] Fixes: |
||
|
Kees Cook
|
de1c831a78 |
slab: Decouple slab_debug and no_hash_pointers
Some system owners use slab_debug=FPZ (or similar) as a hardening option,
but do not want to be forced into having kernel addresses exposed due
to the implicit "no_hash_pointers" boot param setting.[1]
Introduce the "hash_pointers" boot param, which defaults to "auto"
(the current behavior), but also includes "always" (forcing on hashing
even when "slab_debug=..." is defined), and "never". The existing
"no_hash_pointers" boot param becomes an alias for "hash_pointers=never".
This makes it possible to boot with "slab_debug=FPZ hash_pointers=always".
Link: https://github.com/KSPP/linux/issues/368 [1]
Fixes:
|
||
|
Linus Torvalds
|
d3c82f618a |
13 hotfixes. 6 are cc:stable and the remainder address post-6.15 issues
or aren't considered necessary for -stable kernels. 11 are for MM. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaENzlAAKCRDdBJ7gKXxA joNYAP9n38QNDUoRR6ChFikzzY77q4alD2NL0aqXBZdcSRXoUgEAlQ8Ea+t6xnzp GnH+cnsA6FDp4F6lIoZBdENJyBYrkQE= =ud9O -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2025-06-06-16-02' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "13 hotfixes. 6 are cc:stable and the remainder address post-6.15 issues or aren't considered necessary for -stable kernels. 11 are for MM" * tag 'mm-hotfixes-stable-2025-06-06-16-02' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: kernel/rcu/tree_stall: add /sys/kernel/rcu_stall_count MAINTAINERS: add mm swap section kmsan: test: add module description MAINTAINERS: add tlb trace events to MMU GATHER AND TLB INVALIDATION mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race mm/hugetlb: unshare page tables during VMA split, not before MAINTAINERS: add Alistair as reviewer of mm memory policy iov_iter: use iov_offset for length calculation in iov_iter_aligned_bvec mm/mempolicy: fix incorrect freeing of wi_kobj alloc_tag: handle module codetag load errors as module load failures mm/madvise: handle madvise_lock() failure during race unwinding mm: fix vmstat after removing NR_BOUNCE KVM: s390: rename PROT_NONE to PROT_TYPE_DUMMY |
||
|
Linus Torvalds
|
119b1e61a7 |
RISC-V Patches for the 6.16 Merge Window, Part 1
* Support for the FWFT SBI extension, which is part of SBI 3.0 and a dependency for many new SBI and ISA extensions. * Support for getrandom() in the VDSO. * Support for mseal. * Optimized routines for raid6 syndrome and recovery calculations. * kexec_file() supports loading Image-formatted kernel binaries. * Improvements to the instruction patching framework to allow for atomic instruction patching, along with rules as to how systems need to behave in order to function correctly. * Support for a handful of new ISA extensions: Svinval, Zicbop, Zabha, some SiFive vendor extensions. * Various fixes and cleanups, including: misaligned access handling, perf symbol mangling, module loading, PUD THPs, and improved uaccess routines. -----BEGIN PGP SIGNATURE----- iQJNBAABCAA3FiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAmhDLP8ZHHBhbG1lcmRh YmJlbHRAZ29vZ2xlLmNvbQAKCRAuExnzX7sYiZhFD/4+Zikkld812VjFb9dTF+Wj n/x9h86zDwAEFgf2BMIpUQhHru6vtdkO2l/Ky6mQblTPMWLafF4eK85yCsf84sQ0 +RX4sOMLZ0+qvqxKX+aOFe9JXOWB0QIQuPvgBfDDOV4UTm60sglIxwqOpKcsBEHs 2nplXXjiv0ckaMFLos8xlwu1uy4A/jMfT3Y9FDcABxYCqBoKOZ1frcL9ezJZbHbv BoOKLDH8ZypFxIG/eQ511lIXXtrnLas0l4jHWjrfsWu6pmXTgJasKtbGuH3LoLnM G/4qvHufR6lpVUOIL5L0V6PpsmYwDi/ciFIFlc8NH2oOZil3qiVaGSEbJIkWGFu9 8lWTXQWnbinZbfg2oYbWp8GlwI70vKomtDyYNyB9q9Cq9jyiTChMklRNODr4764j ZiEnzc/l4KyvaxUg8RLKCT595lKECiUDnMytbIbunJu05HBqRCoGpBtMVzlQsyUd ybkRt3BA7eOR8/xFA7ZZQeJofmiu2yxkBs5ggMo8UnSragw27hmv/OA0mWMXEuaD aaWc4ZKpKqf7qLchLHOvEl5ORUhsisyIJgZwOqdme5rQoWorVtr51faA4AKwFAN4 vcKgc5qJjK8vnpW+rl3LNJF9LtH+h4TgmUI853vUlukPoH2oqRkeKVGSkxG0iAze eQy2VjP1fJz6ciRtJZn9aw== =cZGy -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-6.16-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Palmer Dabbelt: - Support for the FWFT SBI extension, which is part of SBI 3.0 and a dependency for many new SBI and ISA extensions - Support for getrandom() in the VDSO - Support for mseal - Optimized routines for raid6 syndrome and recovery calculations - kexec_file() supports loading Image-formatted kernel binaries - Improvements to the instruction patching framework to allow for atomic instruction patching, along with rules as to how systems need to behave in order to function correctly - Support for a handful of new ISA extensions: Svinval, Zicbop, Zabha, some SiFive vendor extensions - Various fixes and cleanups, including: misaligned access handling, perf symbol mangling, module loading, PUD THPs, and improved uaccess routines * tag 'riscv-for-linus-6.16-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (69 commits) riscv: uaccess: Only restore the CSR_STATUS SUM bit RISC-V: vDSO: Wire up getrandom() vDSO implementation riscv: enable mseal sysmap for RV64 raid6: Add RISC-V SIMD syndrome and recovery calculations riscv: mm: Add support for Svinval extension RISC-V: Documentation: Add enough title underlines to CMODX riscv: Improve Kconfig help for RISCV_ISA_V_PREEMPTIVE MAINTAINERS: Update Atish's email address riscv: uaccess: do not do misaligned accesses in get/put_user() riscv: process: use unsigned int instead of unsigned long for put_user() riscv: make unsafe user copy routines use existing assembly routines riscv: hwprobe: export Zabha extension riscv: Make regs_irqs_disabled() more clear perf symbols: Ignore mapping symbols on riscv RISC-V: Kconfig: Fix help text of CMDLINE_EXTEND riscv: module: Optimize PLT/GOT entry counting riscv: Add support for PUD THP riscv: xchg: Prefetch the destination word for sc.w riscv: Add ARCH_HAS_PREFETCH[W] support with Zicbop riscv: Add support for Zicbop ... |
||
|
Nitesh Shetty
|
334d7c4fb6 |
iov_iter: use iov_offset for length calculation in iov_iter_aligned_bvec
If iov_offset is non-zero, then we need to consider iov_offset in length
calculation, otherwise we might pass smaller IOs such as 512 bytes, in
below scenario [1].
This issue is reproducible using lib-uring test/fixed-seg.c application
with fixed buffer on a 512 LBA formatted device.
[1]
At present we pass the alignment check, for 512 LBA formatted devices,
len_mask = 511 when IO is smaller, i->count = 512 has an offset,
i->io_offset = 3584 with bvec values, bvec->bv_offset = 256,
bvec->bv_len = 3840. In short, the first 256 bytes are in the current
page, next 256 bytes are in the another page. Ideally we expect to
fail the IO.
I can think of 2 userspace scenarios where we experience this.
a: From userspace, we observe a different behaviour when device LBA
size is 512 vs 4096 bytes. For 4096 LBA formatted device, I see the
same liburing test [2] failing, whereas 512 the test passes without
this. This is reproducible everytime.
[2] https://github.com/axboe/liburing/
b: Although I was not able to reproduce the below condition, but I
suspect below case should be possible from user space for devices
with 512 LBA formatted device. Lets say from userspace while
allocating a virtually single chunk of memory, if we get 2 physical
chunk of memory, and IO happens to be at the boundary of first
physical chunk with length crossing first chunk, then we allow IOs
to proceed and hence we might map wrong physical address length and
proceed with IO rather than failing.
: --- a/test/fixed-seg.c
: +++ b/test/fixed-seg.c
: @@ -64,7 +64,7 @@ static int test(struct io_uring *ring, int fd, int
: vec_off)
: return T_EXIT_FAIL;
: }
:
: - ret = read_it(ring, fd, 4096, vec_off);
: + ret = read_it(ring, fd, 4096, 7*512 + 256);
: if (ret) {
: fprintf(stderr, "4096 0 failed\n");
: return T_EXIT_FAIL;
Effectively this is a write crossing the page boundary.
Link: https://lkml.kernel.org/r/20250428095849.11709-1-nj.shetty@samsung.com
Fixes:
|
||
|
Suren Baghdasaryan
|
044d2aee6c |
alloc_tag: handle module codetag load errors as module load failures
Failures inside codetag_load_module() are currently ignored. As a result an error there would not cause a module load failure and freeing of the associated resources. Correct this behavior by propagating the error code to the caller and handling possible errors. With this change, error to allocate percpu counters, which happens at this stage, will not be ignored and will cause a module load failure and freeing of resources. With this change we also do not need to disable memory allocation profiling when this error happens, instead we fail to load the module. Link: https://lkml.kernel.org/r/20250521160602.1940771-1-surenb@google.com Fixes: 10075262888b ("alloc_tag: allocate percpu counters for module tags dynamically") Signed-off-by: Suren Baghdasaryan <surenb@google.com> Reported-by: Casey Chen <cachen@purestorage.com> Closes: https://lore.kernel.org/all/20250520231620.15259-1-cachen@purestorage.com/ Cc: Daniel Gomez <da.gomez@samsung.com> Cc: David Wang <00107082@163.com> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Luis Chamberalin <mcgrof@kernel.org> Cc: Petr Pavlu <petr.pavlu@suse.com> Cc: Sami Tolvanen <samitolvanen@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Chunyan Zhang
|
6093faaf95
|
raid6: Add RISC-V SIMD syndrome and recovery calculations
The assembly is originally based on the ARM NEON and int.uc, but uses RISC-V vector instructions to implement the RAID6 syndrome and recovery calculations. The functions are tested on QEMU running with the option "-icount shift=0": raid6: rvvx1 gen() 1008 MB/s raid6: rvvx2 gen() 1395 MB/s raid6: rvvx4 gen() 1584 MB/s raid6: rvvx8 gen() 1694 MB/s raid6: int64x8 gen() 113 MB/s raid6: int64x4 gen() 116 MB/s raid6: int64x2 gen() 272 MB/s raid6: int64x1 gen() 229 MB/s raid6: using algorithm rvvx8 gen() 1694 MB/s raid6: .... xor() 1000 MB/s, rmw enabled raid6: using rvv recovery algorithm [Charlie: - Fixup vector options] Signed-off-by: Charlie Jenkins <charlie@rivosinc.com> Signed-off-by: Chunyan Zhang <zhangchunyan@iscas.ac.cn> Reviewed-by: Charlie Jenkins <charlie@rivosinc.com> Tested-by: Charlie Jenkins <charlie@rivosinc.com> Link: https://lore.kernel.org/r/20250305083707.74218-1-zhangchunyan@iscas.ac.cn Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com> |
||
|
Linus Torvalds
|
8b2198f037 |
bitmap-for-6.16
Bitmap updates for 6.16-rc1 include: - dead code cleanups for cpumasks and nodemasks (me); - fixed-width flavors of GENMASK() and BIT() (Vincent, Lucas and me); - FIELD_MODIFY() helper (Luo); - for_each_node_with_cpus() optimization (me); - bitmap-str fixes (Andy). -----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEEi8GdvG6xMhdgpu/4sUSA/TofvsgFAmg43+EACgkQsUSA/Tof vsjn9wwAgQmfIgANEcFo2Gz3OjNIGHRyolG+dXYpf3OytlnbMlTnMev+LASl9VXL LML+2gZsQtMff1Ac7VJzufg5OHg2tTKyozWFPOG5mc+ysBL24d0Pd/Ki8mLlbbTl EQMu5uExXP4qja1vHLF+kEEYMCzWVTRwOE1H/nauu/OUonuOFLlIiXhgJHrmO22Z qHzBAto2bqE/Jy6OneYWiXLtIOcJhfoS2a+Xczf4cBZH6nqeepg7Vnudmd10IUJc BlXcD4Qt/uG6MTS96knNslcgV1Q5Nfkch9JPLu/bzO34nR0VBB1VqMos37fAHQln RhSxd6LdqGxA5ZafivN5YIwHrCJIr7yi6m+92kazX9baqf1Lh7opAK4NgV2o7Rm9 v9SlX+Rcb+HyyoLI7Fh+hVyNdrymbAo4KDzZDk+yHuAYGKHdxgeK5D2GTtpm6ZiJ u515P6zFi7h2jPMTCOWwCBwpeHIDL1hyf9St5yvtDEEeWGRy3y7MkRmxnI4QVlTN b0in+YW5 =vATl -----END PGP SIGNATURE----- Merge tag 'bitmap-for-6.16-rc1' of https://github.com/norov/linux Pull bitmap updates from Yury Norov: - dead code cleanups for cpumasks and nodemasks (me) - fixed-width flavors of GENMASK() and BIT() (Vincent, Lucas and me) - FIELD_MODIFY() helper (Luo) - for_each_node_with_cpus() optimization (me) - bitmap-str fixes (Andy) * tag 'bitmap-for-6.16-rc1' of https://github.com/norov/linux: topology: make for_each_node_with_cpus() O(N) bitfield: Add FIELD_MODIFY() helper bitmap-str: Add missing header(s) bitmap-str: Get rid of 'extern' for function prototypes build_bug.h: more user friendly error messages in BUILD_BUG_ON_ZERO() test_bits: add tests for BIT_U*() test_bits: add tests for GENMASK_U*() drm/i915: Convert REG_GENMASK*() to fixed-width GENMASK_U*() bits: introduce fixed-type BIT_U*() bits: introduce fixed-type GENMASK_U*() bits: add comments and newlines to #if, #else and #endif directives cpumask: drop cpumask_assign_cpu() riscv: switch set_icache_stale_mask() to using non-atomic assign_cpu() cpumask: add non-atomic __assign_cpu() nodemask: drop nodes_shift |
||
|
Linus Torvalds
|
fd1f847350 |
- The 2 patch series "zram: support algorithm-specific parameters" from
Sergey Senozhatsky adds infrastructure for passing algorithm-specific parameters into zram. A single parameter `winbits' is implemented at this time. - The 5 patch series "memcg: nmi-safe kmem charging" from Shakeel Butt makes memcg charging nmi-safe, which is required by BFP, which can operate in NMI context. - The 5 patch series "Some random fixes and cleanup to shmem" from Kemeng Shi implements small fixes and cleanups in the shmem code. - The 2 patch series "Skip mm selftests instead when kernel features are not present" from Zi Yan fixes some issues in the MM selftest code. - The 2 patch series "mm/damon: build-enable essential DAMON components by default" from SeongJae Park reworks DAMON Kconfig to make it easier to enable CONFIG_DAMON. - The 2 patch series "sched/numa: add statistics of numa balance task migration" from Libo Chen adds more info into sysfs and procfs files to improve visibility into the NUMA balancer's task migration activity. - The 4 patch series "selftests/mm: cow and gup_longterm cleanups" from Mark Brown provides various updates to some of the MM selftests to make them play better with the overall containing framework. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaDzA9wAKCRDdBJ7gKXxA js8sAP9V3COg+vzTmimzP3ocTkkbbIJzDfM6nXpE2EQ4BR3ejwD+NsIT2ZLtTF6O LqAZpgO7ju6wMjR/lM30ebCq5qFbZAw= =oruw -----END PGP SIGNATURE----- Merge tag 'mm-stable-2025-06-01-14-06' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull more MM updates from Andrew Morton: - "zram: support algorithm-specific parameters" from Sergey Senozhatsky adds infrastructure for passing algorithm-specific parameters into zram. A single parameter `winbits' is implemented at this time. - "memcg: nmi-safe kmem charging" from Shakeel Butt makes memcg charging nmi-safe, which is required by BFP, which can operate in NMI context. - "Some random fixes and cleanup to shmem" from Kemeng Shi implements small fixes and cleanups in the shmem code. - "Skip mm selftests instead when kernel features are not present" from Zi Yan fixes some issues in the MM selftest code. - "mm/damon: build-enable essential DAMON components by default" from SeongJae Park reworks DAMON Kconfig to make it easier to enable CONFIG_DAMON. - "sched/numa: add statistics of numa balance task migration" from Libo Chen adds more info into sysfs and procfs files to improve visibility into the NUMA balancer's task migration activity. - "selftests/mm: cow and gup_longterm cleanups" from Mark Brown provides various updates to some of the MM selftests to make them play better with the overall containing framework. * tag 'mm-stable-2025-06-01-14-06' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (43 commits) mm/khugepaged: clean up refcount check using folio_expected_ref_count() selftests/mm: fix test result reporting in gup_longterm selftests/mm: report unique test names for each cow test selftests/mm: add helper for logging test start and results selftests/mm: use standard ksft_finished() in cow and gup_longterm selftests/damon/_damon_sysfs: skip testcases if CONFIG_DAMON_SYSFS is disabled sched/numa: add statistics of numa balance task sched/numa: fix task swap by skipping kernel threads tools/testing: check correct variable in open_procmap() tools/testing/vma: add missing function stub mm/gup: update comment explaining why gup_fast() disables IRQs selftests/mm: two fixes for the pfnmap test mm/khugepaged: fix race with folio split/free using temporary reference mm: add CONFIG_PAGE_BLOCK_ORDER to select page block order mmu_notifiers: remove leftover stub macros selftests/mm: deduplicate test names in madv_populate kcov: rust: add flags for KCOV with Rust mm: rust: make CONFIG_MMU ifdefs more narrow mmu_gather: move tlb flush for VM_PFNMAP/VM_MIXEDMAP vmas into free_pgtables() mm/damon/Kconfig: enable CONFIG_DAMON by default ... |
||
|
Linus Torvalds
|
cd2e103d57 |
hardening fixes for v6.16-rc1 (take 2)
- randstruct: gcc-plugin: Fix attribute addition with GCC 15 - ubsan: integer-overflow: depend on BROKEN to keep this out of CI - overflow: Introduce __DEFINE_FLEX for having no initializer - wifi: iwlwifi: mld: Work around Clang loop unrolling bug -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRSPkdeREjth1dHnSE2KwveOeQkuwUCaDx5RgAKCRA2KwveOeQk u4KjAP9tpSeAc2cKb2ZeuVV2dVSf689jR/fxPbgyy2yWIJrPogD/bsFs+LTCXnwB /Rk838ZZJEB0eXKoKk/LKmaN2UMSMgQ= =6m7/ -----END PGP SIGNATURE----- Merge tag 'hardening-v6.16-rc1-fix1-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening fixes from Kees Cook: - randstruct: gcc-plugin: Fix attribute addition with GCC 15 - ubsan: integer-overflow: depend on BROKEN to keep this out of CI - overflow: Introduce __DEFINE_FLEX for having no initializer - wifi: iwlwifi: mld: Work around Clang loop unrolling bug [ Take two after a jump scare due to some repo rewriting by 'b4' - Linus ] * tag 'hardening-v6.16-rc1-fix1-take2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: randstruct: gcc-plugin: Fix attribute addition overflow: Introduce __DEFINE_FLEX for having no initializer ubsan: integer-overflow: depend on BROKEN to keep this out of CI wifi: iwlwifi: mld: Work around Clang loop unrolling bug |
||
|
Matthew Wilcox (Oracle)
|
d973692944 |
iov: remove copy_page_from_iter_atomic()
All callers now use copy_folio_from_iter_atomic(), so convert copy_page_from_iter_atomic(). While I'm in there, use kmap_local_folio() and pagefault_disable() instead of kmap_atomic(). That allows preemption and/or task migration to happen during the copy_from_user(). Also use the new folio_test_partial_kmap() predicate instead of open-coding it. Link: https://lkml.kernel.org/r/20250514170607.3000994-4-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Hugh Dickins <hughd@google.com> Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
7d4e49a77d |
- The 3 patch series "hung_task: extend blocking task stacktrace dump to
semaphore" from Lance Yang enhances the hung task detector. The
detector presently dumps the blocking tasks's stack when it is blocked
on a mutex. Lance's series extends this to semaphores.
- The 2 patch series "nilfs2: improve sanity checks in dirty state
propagation" from Wentao Liang addresses a couple of minor flaws in
nilfs2.
- The 2 patch series "scripts/gdb: Fixes related to lx_per_cpu()" from
Illia Ostapyshyn fixes a couple of issues in the gdb scripts.
- The 9 patch series "Support kdump with LUKS encryption by reusing LUKS
volume keys" from Coiby Xu addresses a usability problem with kdump.
When the dump device is LUKS-encrypted, the kdump kernel may not have
the keys to the encrypted filesystem. A full writeup of this is in the
series [0/N] cover letter.
- The 2 patch series "sysfs: add counters for lockups and stalls" from
Max Kellermann adds /sys/kernel/hardlockup_count and
/sys/kernel/hardlockup_count and /sys/kernel/rcu_stall_count.
- The 3 patch series "fork: Page operation cleanups in the fork code"
from Pasha Tatashin implements a number of code cleanups in fork.c.
- The 3 patch series "scripts/gdb/symbols: determine KASLR offset on
s390 during early boot" from Ilya Leoshkevich fixes some s390 issues in
the gdb scripts.
-----BEGIN PGP SIGNATURE-----
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-----END PGP SIGNATURE-----
Merge tag 'mm-nonmm-stable-2025-05-31-15-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- "hung_task: extend blocking task stacktrace dump to semaphore" from
Lance Yang enhances the hung task detector.
The detector presently dumps the blocking tasks's stack when it is
blocked on a mutex. Lance's series extends this to semaphores
- "nilfs2: improve sanity checks in dirty state propagation" from
Wentao Liang addresses a couple of minor flaws in nilfs2
- "scripts/gdb: Fixes related to lx_per_cpu()" from Illia Ostapyshyn
fixes a couple of issues in the gdb scripts
- "Support kdump with LUKS encryption by reusing LUKS volume keys" from
Coiby Xu addresses a usability problem with kdump.
When the dump device is LUKS-encrypted, the kdump kernel may not have
the keys to the encrypted filesystem. A full writeup of this is in
the series [0/N] cover letter
- "sysfs: add counters for lockups and stalls" from Max Kellermann adds
/sys/kernel/hardlockup_count and /sys/kernel/hardlockup_count and
/sys/kernel/rcu_stall_count
- "fork: Page operation cleanups in the fork code" from Pasha Tatashin
implements a number of code cleanups in fork.c
- "scripts/gdb/symbols: determine KASLR offset on s390 during early
boot" from Ilya Leoshkevich fixes some s390 issues in the gdb
scripts
* tag 'mm-nonmm-stable-2025-05-31-15-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (67 commits)
llist: make llist_add_batch() a static inline
delayacct: remove redundant code and adjust indentation
squashfs: add optional full compressed block caching
crash_dump, nvme: select CONFIGFS_FS as built-in
scripts/gdb/symbols: determine KASLR offset on s390 during early boot
scripts/gdb/symbols: factor out pagination_off()
scripts/gdb/symbols: factor out get_vmlinux()
kernel/panic.c: format kernel-doc comments
mailmap: update and consolidate Casey Connolly's name and email
nilfs2: remove wbc->for_reclaim handling
fork: define a local GFP_VMAP_STACK
fork: check charging success before zeroing stack
fork: clean-up naming of vm_stack/vm_struct variables in vmap stacks code
fork: clean-up ifdef logic around stack allocation
kernel/rcu/tree_stall: add /sys/kernel/rcu_stall_count
kernel/watchdog: add /sys/kernel/{hard,soft}lockup_count
x86/crash: make the page that stores the dm crypt keys inaccessible
x86/crash: pass dm crypt keys to kdump kernel
Revert "x86/mm: Remove unused __set_memory_prot()"
crash_dump: retrieve dm crypt keys in kdump kernel
...
|
||
|
Linus Torvalds
|
00c010e130 |
- The 11 patch series "Add folio_mk_pte()" from Matthew Wilcox
simplifies the act of creating a pte which addresses the first page in a folio and reduces the amount of plumbing which architecture must implement to provide this. - The 8 patch series "Misc folio patches for 6.16" from Matthew Wilcox is a shower of largely unrelated folio infrastructure changes which clean things up and better prepare us for future work. - The 3 patch series "memory,x86,acpi: hotplug memory alignment advisement" from Gregory Price adds early-init code to prevent x86 from leaving physical memory unused when physical address regions are not aligned to memory block size. - The 2 patch series "mm/compaction: allow more aggressive proactive compaction" from Michal Clapinski provides some tuning of the (sadly, hard-coded (more sadly, not auto-tuned)) thresholds for our invokation of proactive compaction. In a simple test case, the reduction of a guest VM's memory consumption was dramatic. - The 8 patch series "Minor cleanups and improvements to swap freeing code" from Kemeng Shi provides some code cleaups and a small efficiency improvement to this part of our swap handling code. - The 6 patch series "ptrace: introduce PTRACE_SET_SYSCALL_INFO API" from Dmitry Levin adds the ability for a ptracer to modify syscalls arguments. At this time we can alter only "system call information that are used by strace system call tampering, namely, syscall number, syscall arguments, and syscall return value. This series should have been incorporated into mm.git's "non-MM" branch, but I goofed. - The 3 patch series "fs/proc: extend the PAGEMAP_SCAN ioctl to report guard regions" from Andrei Vagin extends the info returned by the PAGEMAP_SCAN ioctl against /proc/pid/pagemap. This permits CRIU to more efficiently get at the info about guard regions. - The 2 patch series "Fix parameter passed to page_mapcount_is_type()" from Gavin Shan implements that fix. No runtime effect is expected because validate_page_before_insert() happens to fix up this error. - The 3 patch series "kernel/events/uprobes: uprobe_write_opcode() rewrite" from David Hildenbrand basically brings uprobe text poking into the current decade. Remove a bunch of hand-rolled implementation in favor of using more current facilities. - The 3 patch series "mm/ptdump: Drop assumption that pxd_val() is u64" from Anshuman Khandual provides enhancements and generalizations to the pte dumping code. This might be needed when 128-bit Page Table Descriptors are enabled for ARM. - The 12 patch series "Always call constructor for kernel page tables" from Kevin Brodsky "ensures that the ctor/dtor is always called for kernel pgtables, as it already is for user pgtables". This permits the addition of more functionality such as "insert hooks to protect page tables". This change does result in various architectures performing unnecesary work, but this is fixed up where it is anticipated to occur. - The 9 patch series "Rust support for mm_struct, vm_area_struct, and mmap" from Alice Ryhl adds plumbing to permit Rust access to core MM structures. - The 3 patch series "fix incorrectly disallowed anonymous VMA merges" from Lorenzo Stoakes takes advantage of some VMA merging opportunities which we've been missing for 15 years. - The 4 patch series "mm/madvise: batch tlb flushes for MADV_DONTNEED and MADV_FREE" from SeongJae Park optimizes process_madvise()'s TLB flushing. Instead of flushing each address range in the provided iovec, we batch the flushing across all the iovec entries. The syscall's cost was approximately halved with a microbenchmark which was designed to load this particular operation. - The 6 patch series "Track node vacancy to reduce worst case allocation counts" from Sidhartha Kumar makes the maple tree smarter about its node preallocation. stress-ng mmap performance increased by single-digit percentages and the amount of unnecessarily preallocated memory was dramaticelly reduced. - The 3 patch series "mm/gup: Minor fix, cleanup and improvements" from Baoquan He removes a few unnecessary things which Baoquan noted when reading the code. - The 3 patch series ""Enhance sysfs handling for memory hotplug in weighted interleave" from Rakie Kim "enhances the weighted interleave policy in the memory management subsystem by improving sysfs handling, fixing memory leaks, and introducing dynamic sysfs updates for memory hotplug support". Fixes things on error paths which we are unlikely to hit. - The 7 patch series "mm/damon: auto-tune DAMOS for NUMA setups including tiered memory" from SeongJae Park introduces new DAMOS quota goal metrics which eliminate the manual tuning which is required when utilizing DAMON for memory tiering. - The 5 patch series "mm/vmalloc.c: code cleanup and improvements" from Baoquan He provides cleanups and small efficiency improvements which Baoquan found via code inspection. - The 2 patch series "vmscan: enforce mems_effective during demotion" from Gregory Price "changes reclaim to respect cpuset.mems_effective during demotion when possible". because "presently, reclaim explicitly ignores cpuset.mems_effective when demoting, which may cause the cpuset settings to violated." "This is useful for isolating workloads on a multi-tenant system from certain classes of memory more consistently." - The 2 patch series ""Clean up split_huge_pmd_locked() and remove unnecessary folio pointers" from Gavin Guo provides minor cleanups and efficiency gains in in the huge page splitting and migrating code. - The 3 patch series "Use kmem_cache for memcg alloc" from Huan Yang creates a slab cache for `struct mem_cgroup', yielding improved memory utilization. - The 4 patch series "add max arg to swappiness in memory.reclaim and lru_gen" from Zhongkun He adds a new "max" argument to the "swappiness=" argument for memory.reclaim MGLRU's lru_gen. This directs proactive reclaim to reclaim from only anon folios rather than file-backed folios. - The 17 patch series "kexec: introduce Kexec HandOver (KHO)" from Mike Rapoport is the first step on the path to permitting the kernel to maintain existing VMs while replacing the host kernel via file-based kexec. At this time only memblock's reserve_mem is preserved. - The 7 patch series "mm: Introduce for_each_valid_pfn()" from David Woodhouse provides and uses a smarter way of looping over a pfn range. By skipping ranges of invalid pfns. - The 2 patch series "sched/numa: Skip VMA scanning on memory pinned to one NUMA node via cpuset.mems" from Libo Chen removes a lot of pointless VMA scanning when a task is pinned a single NUMA mode. Dramatic performance benefits were seen in some real world cases. - The 2 patch series "JFS: Implement migrate_folio for jfs_metapage_aops" from Shivank Garg addresses a warning which occurs during memory compaction when using JFS. - The 4 patch series "move all VMA allocation, freeing and duplication logic to mm" from Lorenzo Stoakes moves some VMA code from kernel/fork.c into the more appropriate mm/vma.c. - The 6 patch series "mm, swap: clean up swap cache mapping helper" from Kairui Song provides code consolidation and cleanups related to the folio_index() function. - The 2 patch series "mm/gup: Cleanup memfd_pin_folios()" from Vishal Moola does that. - The 8 patch series "memcg: Fix test_memcg_min/low test failures" from Waiman Long addresses some bogus failures which are being reported by the test_memcontrol selftest. - The 3 patch series "eliminate mmap() retry merge, add .mmap_prepare hook" from Lorenzo Stoakes commences the deprecation of file_operations.mmap() in favor of the new file_operations.mmap_prepare(). The latter is more restrictive and prevents drivers from messing with things in ways which, amongst other problems, may defeat VMA merging. - The 4 patch series "memcg: decouple memcg and objcg stocks"" from Shakeel Butt decouples the per-cpu memcg charge cache from the objcg's one. This is a step along the way to making memcg and objcg charging NMI-safe, which is a BPF requirement. - The 6 patch series "mm/damon: minor fixups and improvements for code, tests, and documents" from SeongJae Park is "yet another batch of miscellaneous DAMON changes. Fix and improve minor problems in code, tests and documents." - The 7 patch series "memcg: make memcg stats irq safe" from Shakeel Butt converts memcg stats to be irq safe. Another step along the way to making memcg charging and stats updates NMI-safe, a BPF requirement. - The 4 patch series "Let unmap_hugepage_range() and several related functions take folio instead of page" from Fan Ni provides folio conversions in the hugetlb code. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaDt5qgAKCRDdBJ7gKXxA ju6XAP9nTiSfRz8Cz1n5LJZpFKEGzLpSihCYyR6P3o1L9oe3mwEAlZ5+XAwk2I5x Qqb/UGMEpilyre1PayQqOnct3aSL9Ao= =tYYm -----END PGP SIGNATURE----- Merge tag 'mm-stable-2025-05-31-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - "Add folio_mk_pte()" from Matthew Wilcox simplifies the act of creating a pte which addresses the first page in a folio and reduces the amount of plumbing which architecture must implement to provide this. - "Misc folio patches for 6.16" from Matthew Wilcox is a shower of largely unrelated folio infrastructure changes which clean things up and better prepare us for future work. - "memory,x86,acpi: hotplug memory alignment advisement" from Gregory Price adds early-init code to prevent x86 from leaving physical memory unused when physical address regions are not aligned to memory block size. - "mm/compaction: allow more aggressive proactive compaction" from Michal Clapinski provides some tuning of the (sadly, hard-coded (more sadly, not auto-tuned)) thresholds for our invokation of proactive compaction. In a simple test case, the reduction of a guest VM's memory consumption was dramatic. - "Minor cleanups and improvements to swap freeing code" from Kemeng Shi provides some code cleaups and a small efficiency improvement to this part of our swap handling code. - "ptrace: introduce PTRACE_SET_SYSCALL_INFO API" from Dmitry Levin adds the ability for a ptracer to modify syscalls arguments. At this time we can alter only "system call information that are used by strace system call tampering, namely, syscall number, syscall arguments, and syscall return value. This series should have been incorporated into mm.git's "non-MM" branch, but I goofed. - "fs/proc: extend the PAGEMAP_SCAN ioctl to report guard regions" from Andrei Vagin extends the info returned by the PAGEMAP_SCAN ioctl against /proc/pid/pagemap. This permits CRIU to more efficiently get at the info about guard regions. - "Fix parameter passed to page_mapcount_is_type()" from Gavin Shan implements that fix. No runtime effect is expected because validate_page_before_insert() happens to fix up this error. - "kernel/events/uprobes: uprobe_write_opcode() rewrite" from David Hildenbrand basically brings uprobe text poking into the current decade. Remove a bunch of hand-rolled implementation in favor of using more current facilities. - "mm/ptdump: Drop assumption that pxd_val() is u64" from Anshuman Khandual provides enhancements and generalizations to the pte dumping code. This might be needed when 128-bit Page Table Descriptors are enabled for ARM. - "Always call constructor for kernel page tables" from Kevin Brodsky ensures that the ctor/dtor is always called for kernel pgtables, as it already is for user pgtables. This permits the addition of more functionality such as "insert hooks to protect page tables". This change does result in various architectures performing unnecesary work, but this is fixed up where it is anticipated to occur. - "Rust support for mm_struct, vm_area_struct, and mmap" from Alice Ryhl adds plumbing to permit Rust access to core MM structures. - "fix incorrectly disallowed anonymous VMA merges" from Lorenzo Stoakes takes advantage of some VMA merging opportunities which we've been missing for 15 years. - "mm/madvise: batch tlb flushes for MADV_DONTNEED and MADV_FREE" from SeongJae Park optimizes process_madvise()'s TLB flushing. Instead of flushing each address range in the provided iovec, we batch the flushing across all the iovec entries. The syscall's cost was approximately halved with a microbenchmark which was designed to load this particular operation. - "Track node vacancy to reduce worst case allocation counts" from Sidhartha Kumar makes the maple tree smarter about its node preallocation. stress-ng mmap performance increased by single-digit percentages and the amount of unnecessarily preallocated memory was dramaticelly reduced. - "mm/gup: Minor fix, cleanup and improvements" from Baoquan He removes a few unnecessary things which Baoquan noted when reading the code. - ""Enhance sysfs handling for memory hotplug in weighted interleave" from Rakie Kim "enhances the weighted interleave policy in the memory management subsystem by improving sysfs handling, fixing memory leaks, and introducing dynamic sysfs updates for memory hotplug support". Fixes things on error paths which we are unlikely to hit. - "mm/damon: auto-tune DAMOS for NUMA setups including tiered memory" from SeongJae Park introduces new DAMOS quota goal metrics which eliminate the manual tuning which is required when utilizing DAMON for memory tiering. - "mm/vmalloc.c: code cleanup and improvements" from Baoquan He provides cleanups and small efficiency improvements which Baoquan found via code inspection. - "vmscan: enforce mems_effective during demotion" from Gregory Price changes reclaim to respect cpuset.mems_effective during demotion when possible. because presently, reclaim explicitly ignores cpuset.mems_effective when demoting, which may cause the cpuset settings to violated. This is useful for isolating workloads on a multi-tenant system from certain classes of memory more consistently. - "Clean up split_huge_pmd_locked() and remove unnecessary folio pointers" from Gavin Guo provides minor cleanups and efficiency gains in in the huge page splitting and migrating code. - "Use kmem_cache for memcg alloc" from Huan Yang creates a slab cache for `struct mem_cgroup', yielding improved memory utilization. - "add max arg to swappiness in memory.reclaim and lru_gen" from Zhongkun He adds a new "max" argument to the "swappiness=" argument for memory.reclaim MGLRU's lru_gen. This directs proactive reclaim to reclaim from only anon folios rather than file-backed folios. - "kexec: introduce Kexec HandOver (KHO)" from Mike Rapoport is the first step on the path to permitting the kernel to maintain existing VMs while replacing the host kernel via file-based kexec. At this time only memblock's reserve_mem is preserved. - "mm: Introduce for_each_valid_pfn()" from David Woodhouse provides and uses a smarter way of looping over a pfn range. By skipping ranges of invalid pfns. - "sched/numa: Skip VMA scanning on memory pinned to one NUMA node via cpuset.mems" from Libo Chen removes a lot of pointless VMA scanning when a task is pinned a single NUMA mode. Dramatic performance benefits were seen in some real world cases. - "JFS: Implement migrate_folio for jfs_metapage_aops" from Shivank Garg addresses a warning which occurs during memory compaction when using JFS. - "move all VMA allocation, freeing and duplication logic to mm" from Lorenzo Stoakes moves some VMA code from kernel/fork.c into the more appropriate mm/vma.c. - "mm, swap: clean up swap cache mapping helper" from Kairui Song provides code consolidation and cleanups related to the folio_index() function. - "mm/gup: Cleanup memfd_pin_folios()" from Vishal Moola does that. - "memcg: Fix test_memcg_min/low test failures" from Waiman Long addresses some bogus failures which are being reported by the test_memcontrol selftest. - "eliminate mmap() retry merge, add .mmap_prepare hook" from Lorenzo Stoakes commences the deprecation of file_operations.mmap() in favor of the new file_operations.mmap_prepare(). The latter is more restrictive and prevents drivers from messing with things in ways which, amongst other problems, may defeat VMA merging. - "memcg: decouple memcg and objcg stocks"" from Shakeel Butt decouples the per-cpu memcg charge cache from the objcg's one. This is a step along the way to making memcg and objcg charging NMI-safe, which is a BPF requirement. - "mm/damon: minor fixups and improvements for code, tests, and documents" from SeongJae Park is yet another batch of miscellaneous DAMON changes. Fix and improve minor problems in code, tests and documents. - "memcg: make memcg stats irq safe" from Shakeel Butt converts memcg stats to be irq safe. Another step along the way to making memcg charging and stats updates NMI-safe, a BPF requirement. - "Let unmap_hugepage_range() and several related functions take folio instead of page" from Fan Ni provides folio conversions in the hugetlb code. * tag 'mm-stable-2025-05-31-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (285 commits) mm: pcp: increase pcp->free_count threshold to trigger free_high mm/hugetlb: convert use of struct page to folio in __unmap_hugepage_range() mm/hugetlb: refactor __unmap_hugepage_range() to take folio instead of page mm/hugetlb: refactor unmap_hugepage_range() to take folio instead of page mm/hugetlb: pass folio instead of page to unmap_ref_private() memcg: objcg stock trylock without irq disabling memcg: no stock lock for cpu hot-unplug memcg: make __mod_memcg_lruvec_state re-entrant safe against irqs memcg: make count_memcg_events re-entrant safe against irqs memcg: make mod_memcg_state re-entrant safe against irqs memcg: move preempt disable to callers of memcg_rstat_updated memcg: memcg_rstat_updated re-entrant safe against irqs mm: khugepaged: decouple SHMEM and file folios' collapse selftests/eventfd: correct test name and improve messages alloc_tag: check mem_profiling_support in alloc_tag_init Docs/damon: update titles and brief introductions to explain DAMOS selftests/damon/_damon_sysfs: read tried regions directories in order mm/damon/tests/core-kunit: add a test for damos_set_filters_default_reject() mm/damon/paddr: remove unused variable, folio_list, in damon_pa_stat() mm/damon/sysfs-schemes: fix wrong comment on damons_sysfs_quota_goal_metric_strs ... |
||
|
Linus Torvalds
|
dee264c16a |
require gcc-8 and binutils-2.30
x86 already uses gcc-8 as the minimum version, this changes all other architectures to the same version. gcc-8 is used is Debian 10 and Red Hat Enterprise Linux 8, both of which are still supported, and binutils 2.30 is the oldest corresponding version on those. Ubuntu Pro 18.04 and SUSE Linux Enterprise Server 15 both use gcc-7 as the system compiler but additionally include toolchains that remain supported. With the new minimum toolchain versions, a number of workarounds for older versions can be dropped, in particular on x86_64 and arm64. Importantly, the updated compiler version allows removing two of the five remaining gcc plugins, as support for sancov and structeak features is already included in modern compiler versions. I tried collecting the known changes that are possible based on the new toolchain version, but expect that more cleanups will be possible. Since this touches multiple architectures, I merged the patches through the asm-generic tree. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmg6vNMACgkQmmx57+YA GNkOmg/+LtR9B2P27GPBeG8HnLTZ8hKELiyYeSk6ZFgQv5hevE37HV35Yru7e7gu wcF6CgYr8ff4CVcHM7y0790oGew1thkqq5CklFIH0EwCDJx/mWfZR1SS2jfZIEWM HSDOlQQd1S8oWia14tSnQos3nW3CB9/ABVTHH+Wvl3xn48WMRvgK2LJgGLuxJrt8 5DD9auHiLjchWB5tB4DU98IgWWgFUGMTsI6IayZ4dkF4CdWqd89h0Y3pjJYeBgHS mPxzR2q8WjEmG9hp7QuZQgn/pAYleJAwHvvkoLrkQ2ieqx3FjWiwFbQp4CG1Sc8L eBR1lnkqS2z/e7xJLfe86fOoKWWu4I0tZKhRan/0+UOGm5nXrGpqSxKS8ZDsRuAp 3fvyhIp1cYSa7Xkok8BFhLEFR0tguXJXnXBc3tWE5VXIfFNd0Ohh1GUYhXDAqWKh i0jN9dSNhokM3AqBi6qZl5kmBnRA3UsIaOg3QRrqN8IlBPp+u7i5xsrJIUWvD95o TO06admmLcCJT8n6ZfNVfRjBgzu8+t54UVaDx9YYwxoNGOSFwqOb8CSPTWPxLmDr RKDUOvO8DBlP7uFz9neP+LxluA3DjurRZvb0z0AmCZ8/RXEmTMCyfP5a6esxquXt 0Bqo6hM9q+TeXTHNS1CNvqLSWWikw+AzS/ZPPvriYFn5lxtbq6c= =pdDC -----END PGP SIGNATURE----- Merge tag 'gcc-minimum-version-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull compiler version requirement update from Arnd Bergmann: "Require gcc-8 and binutils-2.30 x86 already uses gcc-8 as the minimum version, this changes all other architectures to the same version. gcc-8 is used is Debian 10 and Red Hat Enterprise Linux 8, both of which are still supported, and binutils 2.30 is the oldest corresponding version on those. Ubuntu Pro 18.04 and SUSE Linux Enterprise Server 15 both use gcc-7 as the system compiler but additionally include toolchains that remain supported. With the new minimum toolchain versions, a number of workarounds for older versions can be dropped, in particular on x86_64 and arm64. Importantly, the updated compiler version allows removing two of the five remaining gcc plugins, as support for sancov and structeak features is already included in modern compiler versions. I tried collecting the known changes that are possible based on the new toolchain version, but expect that more cleanups will be possible. Since this touches multiple architectures, I merged the patches through the asm-generic tree." * tag 'gcc-minimum-version-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: Makefile.kcov: apply needed compiler option unconditionally in CFLAGS_KCOV Documentation: update binutils-2.30 version reference gcc-plugins: remove SANCOV gcc plugin Kbuild: remove structleak gcc plugin arm64: drop binutils version checks raid6: skip avx512 checks kbuild: require gcc-8 and binutils-2.30 |
||
|
Linus Torvalds
|
bf373e4c78 |
Devicetree updates for v6.16:
DT Bindings:
- Convert all remaining interrupt-controller bindings to DT schema
- Convert Rockchip CDN-DP and Freescale TCON, M4IF, TigerP, LDB, PPC
PMC, imx-drm, and ftm-quaddec to DT schema
- Add bindings for fsl,vf610-pit, fsl,ls1021a-wdt, sgx,vz89te,
maxim,max30208, ti,lp8864, and fairphone,fp5-sndcard
- Add top-level constraints for renesas,vsp1 and renesas,fcp
- Add missing constraint in amlogic,pinctrl-a4 'group' nodes
- Adjust the allowed properties for dwc3-xilinx, sony,imx219,
pci-iommu, and renesas,dsi
- Add EcoNet vendor prefix
- Fix the reserved-memory.yaml in fsl,qman-fqd
- Drop obsolete numa.txt and cpu-topology.txt which are schemas in
dtschema now
- Drop Renesas RZ/N1S bindings
- Ensure Arm cpu nodes don't allow undocumented properties. Add all
the properties which are in use and undocumented. Drop the Mediatek
cpufreq binding which is not a binding, but just what DT properties
the driver uses.
- Add compatibles for Renesas RZ/G3E and RZ/V2N Mali Bifrost GPU
- Update documentation on defining child nodes with separate schemas
- Add bindings to PSCI MAINTAINERS entry
DT core:
- Add new functions to simplify driver handling of 'memory-region'
properties. Users to be added next cycle.
- Simplify of_dma_set_restricted_buffer() to use of_for_each_phandle()
- Add missing unlock on error in unittest_data_add()
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Merge tag 'devicetree-for-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree updates from Rob Herring:
"DT Bindings:
- Convert all remaining interrupt-controller bindings to DT schema
- Convert Rockchip CDN-DP and Freescale TCON, M4IF, TigerP, LDB, PPC
PMC, imx-drm, and ftm-quaddec to DT schema
- Add bindings for fsl,vf610-pit, fsl,ls1021a-wdt, sgx,vz89te,
maxim,max30208, ti,lp8864, and fairphone,fp5-sndcard
- Add top-level constraints for renesas,vsp1 and renesas,fcp
- Add missing constraint in amlogic,pinctrl-a4 'group' nodes
- Adjust the allowed properties for dwc3-xilinx, sony,imx219,
pci-iommu, and renesas,dsi
- Add EcoNet vendor prefix
- Fix the reserved-memory.yaml in fsl,qman-fqd
- Drop obsolete numa.txt and cpu-topology.txt which are schemas in
dtschema now
- Drop Renesas RZ/N1S bindings
- Ensure Arm cpu nodes don't allow undocumented properties. Add all
the properties which are in use and undocumented. Drop the Mediatek
cpufreq binding which is not a binding, but just what DT properties
the driver uses.
- Add compatibles for Renesas RZ/G3E and RZ/V2N Mali Bifrost GPU
- Update documentation on defining child nodes with separate schemas
- Add bindings to PSCI MAINTAINERS entry
DT core:
- Add new functions to simplify driver handling of 'memory-region'
properties. Users to be added next cycle.
- Simplify of_dma_set_restricted_buffer() to use
of_for_each_phandle()
- Add missing unlock on error in unittest_data_add()"
* tag 'devicetree-for-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (87 commits)
dt-bindings: timer: Add fsl,vf610-pit.yaml
dt-bindings: gpu: mali-bifrost: Add compatible for RZ/G3E SoC
ASoC: dt-bindings: qcom,sm8250: Add Fairphone 5 sound card
dt-bindings: arm/cpus: Allow 2 power-domains entries
dt-bindings: usb: dwc3-xilinx: allow dma-coherent
media: dt-bindings: sony,imx219: Allow props from video-interface-devices
dt-bindings: soundwire: qcom: Document v2.1.0 version of IP block
dt-bindings: watchdog: fsl-imx-wdt: add compatible string fsl,ls1021a-wdt
dt-bindings: pinctrl: amlogic,pinctrl-a4: Add missing constraint on allowed 'group' node properties
dt-bindings: display: rockchip: Convert cdn-dp-rockchip.txt to yaml
dt-bindings: display: bridge: renesas,dsi: allow properties from dsi-controller
dt-bindings: trivial-devices: Add VZ89TE to trivial
media: dt-bindings: renesas,vsp1: add top-level constraints
media: dt-bindings: renesas,fcp: add top-level constraints
dt-bindings: trivial-devices: Add Maxim max30208
dt-bindings: soc: fsl,qman-fqd: Fix reserved-memory.yaml reference
dt-bindings: interrupt-controller: Convert ti,omap-intc-irq to DT schema
dt-bindings: interrupt-controller: Convert ti,omap4-wugen-mpu to DT schema
dt-bindings: interrupt-controller: Convert ti,keystone-irq to DT schema
dt-bindings: interrupt-controller: Convert technologic,ts4800-irqc to DT schema
...
|
||
|
Linus Torvalds
|
43db111107 |
ARM:
* Add large stage-2 mapping (THP) support for non-protected guests when pKVM is enabled, clawing back some performance. * Enable nested virtualisation support on systems that support it, though it is disabled by default. * Add UBSAN support to the standalone EL2 object used in nVHE/hVHE and protected modes. * Large rework of the way KVM tracks architecture features and links them with the effects of control bits. While this has no functional impact, it ensures correctness of emulation (the data is automatically extracted from the published JSON files), and helps dealing with the evolution of the architecture. * Significant changes to the way pKVM tracks ownership of pages, avoiding page table walks by storing the state in the hypervisor's vmemmap. This in turn enables the THP support described above. * New selftest checking the pKVM ownership transition rules * Fixes for FEAT_MTE_ASYNC being accidentally advertised to guests even if the host didn't have it. * Fixes for the address translation emulation, which happened to be rather buggy in some specific contexts. * Fixes for the PMU emulation in NV contexts, decoupling PMCR_EL0.N from the number of counters exposed to a guest and addressing a number of issues in the process. * Add a new selftest for the SVE host state being corrupted by a guest. * Keep HCR_EL2.xMO set at all times for systems running with the kernel at EL2, ensuring that the window for interrupts is slightly bigger, and avoiding a pretty bad erratum on the AmpereOne HW. * Add workaround for AmpereOne's erratum AC04_CPU_23, which suffers from a pretty bad case of TLB corruption unless accesses to HCR_EL2 are heavily synchronised. * Add a per-VM, per-ITS debugfs entry to dump the state of the ITS tables in a human-friendly fashion. * and the usual random cleanups. LoongArch: * Don't flush tlb if the host supports hardware page table walks. * Add KVM selftests support. RISC-V: * Add vector registers to get-reg-list selftest * VCPU reset related improvements * Remove scounteren initialization from VCPU reset * Support VCPU reset from userspace using set_mpstate() ioctl x86: * Initial support for TDX in KVM. This finally makes it possible to use the TDX module to run confidential guests on Intel processors. This is quite a large series, including support for private page tables (managed by the TDX module and mirrored in KVM for efficiency), forwarding some TDVMCALLs to userspace, and handling several special VM exits from the TDX module. This has been in the works for literally years and it's not really possible to describe everything here, so I'll defer to the various merge commits up to and including commit |
||
|
Kees Cook
|
d6a0e0bfec |
ubsan: integer-overflow: depend on BROKEN to keep this out of CI
Depending on !COMPILE_TEST isn't sufficient to keep this feature out of
CI because we can't stop it from being included in randconfig builds.
This feature is still highly experimental, and is developed in lock-step
with Clang's Overflow Behavior Types[1]. Depend on BROKEN to keep it
from being enabled by anyone not expecting it.
Link: https://discourse.llvm.org/t/rfc-v2-clang-introduce-overflowbehaviortypes-for-wrapping-and-non-wrapping-arithmetic/86507 [1]
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202505281024.f42beaa7-lkp@intel.com
Fixes:
|
||
|
Linus Torvalds
|
1b98f357da |
Networking changes for 6.16.
Core
----
- Implement the Device Memory TCP transmit path, allowing zero-copy
data transmission on top of TCP from e.g. GPU memory to the wire.
- Move all the IPv6 routing tables management outside the RTNL scope,
under its own lock and RCU. The route control path is now 3x times
faster.
- Convert queue related netlink ops to instance lock, reducing
again the scope of the RTNL lock. This improves the control plane
scalability.
- Refactor the software crc32c implementation, removing unneeded
abstraction layers and improving significantly the related
micro-benchmarks.
- Optimize the GRO engine for UDP-tunneled traffic, for a 10%
performance improvement in related stream tests.
- Cover more per-CPU storage with local nested BH locking; this is a
prep work to remove the current per-CPU lock in local_bh_disable()
on PREMPT_RT.
- Introduce and use nlmsg_payload helper, combining buffer bounds
verification with accessing payload carried by netlink messages.
Netfilter
---------
- Rewrite the procfs conntrack table implementation, improving
considerably the dump performance. A lot of user-space tools
still use this interface.
- Implement support for wildcard netdevice in netdev basechain
and flowtables.
- Integrate conntrack information into nft trace infrastructure.
- Export set count and backend name to userspace, for better
introspection.
BPF
---
- BPF qdisc support: BPF-qdisc can be implemented with BPF struct_ops
programs and can be controlled in similar way to traditional qdiscs
using the "tc qdisc" command.
- Refactor the UDP socket iterator, addressing long standing issues
WRT duplicate hits or missed sockets.
Protocols
---------
- Improve TCP receive buffer auto-tuning and increase the default
upper bound for the receive buffer; overall this improves the single
flow maximum thoughput on 200Gbs link by over 60%.
- Add AFS GSSAPI security class to AF_RXRPC; it provides transport
security for connections to the AFS fileserver and VL server.
- Improve TCP multipath routing, so that the sources address always
matches the nexthop device.
- Introduce SO_PASSRIGHTS for AF_UNIX, to allow disabling SCM_RIGHTS,
and thus preventing DoS caused by passing around problematic FDs.
- Retire DCCP socket. DCCP only receives updates for bugs, and major
distros disable it by default. Its removal allows for better
organisation of TCP fields to reduce the number of cache lines hit
in the fast path.
- Extend TCP drop-reason support to cover PAWS checks.
Driver API
----------
- Reorganize PTP ioctl flag support to require an explicit opt-in for
the drivers, avoiding the problem of drivers not rejecting new
unsupported flags.
- Converted several device drivers to timestamping APIs.
- Introduce per-PHY ethtool dump helpers, improving the support for
dump operations targeting PHYs.
Tests and tooling
-----------------
- Add support for classic netlink in user space C codegen, so that
ynl-c can now read, create and modify links, routes addresses and
qdisc layer configuration.
- Add ynl sub-types for binary attributes, allowing ynl-c to output
known struct instead of raw binary data, clarifying the classic
netlink output.
- Extend MPTCP selftests to improve the code-coverage.
- Add tests for XDP tail adjustment in AF_XDP.
New hardware / drivers
----------------------
- OpenVPN virtual driver: offload OpenVPN data channels processing
to the kernel-space, increasing the data transfer throughput WRT
the user-space implementation.
- Renesas glue driver for the gigabit ethernet RZ/V2H(P) SoC.
- Broadcom asp-v3.0 ethernet driver.
- AMD Renoir ethernet device.
- ReakTek MT9888 2.5G ethernet PHY driver.
- Aeonsemi 10G C45 PHYs driver.
Drivers
-------
- Ethernet high-speed NICs:
- nVidia/Mellanox (mlx5):
- refactor the stearing table handling to reduce significantly
the amount of memory used
- add support for complex matches in H/W flow steering
- improve flow streeing error handling
- convert to netdev instance locking
- Intel (100G, ice, igb, ixgbe, idpf):
- ice: add switchdev support for LLDP traffic over VF
- ixgbe: add firmware manipulation and regions devlink support
- igb: introduce support for frame transmission premption
- igb: adds persistent NAPI configuration
- idpf: introduce RDMA support
- idpf: add initial PTP support
- Meta (fbnic):
- extend hardware stats coverage
- add devlink dev flash support
- Broadcom (bnxt):
- add support for RX-side device memory TCP
- Wangxun (txgbe):
- implement support for udp tunnel offload
- complete PTP and SRIOV support for AML 25G/10G devices
- Ethernet NICs embedded and virtual:
- Google (gve):
- add device memory TCP TX support
- Amazon (ena):
- support persistent per-NAPI config
- Airoha:
- add H/W support for L2 traffic offload
- add per flow stats for flow offloading
- RealTek (rtl8211): add support for WoL magic packet
- Synopsys (stmmac):
- dwmac-socfpga 1000BaseX support
- add Loongson-2K3000 support
- introduce support for hardware-accelerated VLAN stripping
- Broadcom (bcmgenet):
- expose more H/W stats
- Freescale (enetc, dpaa2-eth):
- enetc: add MAC filter, VLAN filter RSS and loopback support
- dpaa2-eth: convert to H/W timestamping APIs
- vxlan: convert FDB table to rhashtable, for better scalabilty
- veth: apply qdisc backpressure on full ring to reduce TX drops
- Ethernet switches:
- Microchip (kzZ88x3): add ETS scheduler support
- Ethernet PHYs:
- RealTek (rtl8211):
- add support for WoL magic packet
- add support for PHY LEDs
- CAN:
- Adds RZ/G3E CANFD support to the rcar_canfd driver.
- Preparatory work for CAN-XL support.
- Add self-tests framework with support for CAN physical interfaces.
- WiFi:
- mac80211:
- scan improvements with multi-link operation (MLO)
- Qualcomm (ath12k):
- enable AHB support for IPQ5332
- add monitor interface support to QCN9274
- add multi-link operation support to WCN7850
- add 802.11d scan offload support to WCN7850
- monitor mode for WCN7850, better 6 GHz regulatory
- Qualcomm (ath11k):
- restore hibernation support
- MediaTek (mt76):
- WiFi-7 improvements
- implement support for mt7990
- Intel (iwlwifi):
- enhanced multi-link single-radio (EMLSR) support on 5 GHz links
- rework device configuration
- RealTek (rtw88):
- improve throughput for RTL8814AU
- RealTek (rtw89):
- add multi-link operation support
- STA/P2P concurrency improvements
- support different SAR configs by antenna
- Bluetooth:
- introduce HCI Driver protocol
- btintel_pcie: do not generate coredump for diagnostic events
- btusb: add HCI Drv commands for configuring altsetting
- btusb: add RTL8851BE device 0x0bda:0xb850
- btusb: add new VID/PID 13d3/3584 for MT7922
- btusb: add new VID/PID 13d3/3630 and 13d3/3613 for MT7925
- btnxpuart: implement host-wakeup feature
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"Core:
- Implement the Device Memory TCP transmit path, allowing zero-copy
data transmission on top of TCP from e.g. GPU memory to the wire.
- Move all the IPv6 routing tables management outside the RTNL scope,
under its own lock and RCU. The route control path is now 3x times
faster.
- Convert queue related netlink ops to instance lock, reducing again
the scope of the RTNL lock. This improves the control plane
scalability.
- Refactor the software crc32c implementation, removing unneeded
abstraction layers and improving significantly the related
micro-benchmarks.
- Optimize the GRO engine for UDP-tunneled traffic, for a 10%
performance improvement in related stream tests.
- Cover more per-CPU storage with local nested BH locking; this is a
prep work to remove the current per-CPU lock in local_bh_disable()
on PREMPT_RT.
- Introduce and use nlmsg_payload helper, combining buffer bounds
verification with accessing payload carried by netlink messages.
Netfilter:
- Rewrite the procfs conntrack table implementation, improving
considerably the dump performance. A lot of user-space tools still
use this interface.
- Implement support for wildcard netdevice in netdev basechain and
flowtables.
- Integrate conntrack information into nft trace infrastructure.
- Export set count and backend name to userspace, for better
introspection.
BPF:
- BPF qdisc support: BPF-qdisc can be implemented with BPF struct_ops
programs and can be controlled in similar way to traditional qdiscs
using the "tc qdisc" command.
- Refactor the UDP socket iterator, addressing long standing issues
WRT duplicate hits or missed sockets.
Protocols:
- Improve TCP receive buffer auto-tuning and increase the default
upper bound for the receive buffer; overall this improves the
single flow maximum thoughput on 200Gbs link by over 60%.
- Add AFS GSSAPI security class to AF_RXRPC; it provides transport
security for connections to the AFS fileserver and VL server.
- Improve TCP multipath routing, so that the sources address always
matches the nexthop device.
- Introduce SO_PASSRIGHTS for AF_UNIX, to allow disabling SCM_RIGHTS,
and thus preventing DoS caused by passing around problematic FDs.
- Retire DCCP socket. DCCP only receives updates for bugs, and major
distros disable it by default. Its removal allows for better
organisation of TCP fields to reduce the number of cache lines hit
in the fast path.
- Extend TCP drop-reason support to cover PAWS checks.
Driver API:
- Reorganize PTP ioctl flag support to require an explicit opt-in for
the drivers, avoiding the problem of drivers not rejecting new
unsupported flags.
- Converted several device drivers to timestamping APIs.
- Introduce per-PHY ethtool dump helpers, improving the support for
dump operations targeting PHYs.
Tests and tooling:
- Add support for classic netlink in user space C codegen, so that
ynl-c can now read, create and modify links, routes addresses and
qdisc layer configuration.
- Add ynl sub-types for binary attributes, allowing ynl-c to output
known struct instead of raw binary data, clarifying the classic
netlink output.
- Extend MPTCP selftests to improve the code-coverage.
- Add tests for XDP tail adjustment in AF_XDP.
New hardware / drivers:
- OpenVPN virtual driver: offload OpenVPN data channels processing to
the kernel-space, increasing the data transfer throughput WRT the
user-space implementation.
- Renesas glue driver for the gigabit ethernet RZ/V2H(P) SoC.
- Broadcom asp-v3.0 ethernet driver.
- AMD Renoir ethernet device.
- ReakTek MT9888 2.5G ethernet PHY driver.
- Aeonsemi 10G C45 PHYs driver.
Drivers:
- Ethernet high-speed NICs:
- nVidia/Mellanox (mlx5):
- refactor the steering table handling to significantly
reduce the amount of memory used
- add support for complex matches in H/W flow steering
- improve flow streeing error handling
- convert to netdev instance locking
- Intel (100G, ice, igb, ixgbe, idpf):
- ice: add switchdev support for LLDP traffic over VF
- ixgbe: add firmware manipulation and regions devlink support
- igb: introduce support for frame transmission premption
- igb: adds persistent NAPI configuration
- idpf: introduce RDMA support
- idpf: add initial PTP support
- Meta (fbnic):
- extend hardware stats coverage
- add devlink dev flash support
- Broadcom (bnxt):
- add support for RX-side device memory TCP
- Wangxun (txgbe):
- implement support for udp tunnel offload
- complete PTP and SRIOV support for AML 25G/10G devices
- Ethernet NICs embedded and virtual:
- Google (gve):
- add device memory TCP TX support
- Amazon (ena):
- support persistent per-NAPI config
- Airoha:
- add H/W support for L2 traffic offload
- add per flow stats for flow offloading
- RealTek (rtl8211): add support for WoL magic packet
- Synopsys (stmmac):
- dwmac-socfpga 1000BaseX support
- add Loongson-2K3000 support
- introduce support for hardware-accelerated VLAN stripping
- Broadcom (bcmgenet):
- expose more H/W stats
- Freescale (enetc, dpaa2-eth):
- enetc: add MAC filter, VLAN filter RSS and loopback support
- dpaa2-eth: convert to H/W timestamping APIs
- vxlan: convert FDB table to rhashtable, for better scalabilty
- veth: apply qdisc backpressure on full ring to reduce TX drops
- Ethernet switches:
- Microchip (kzZ88x3): add ETS scheduler support
- Ethernet PHYs:
- RealTek (rtl8211):
- add support for WoL magic packet
- add support for PHY LEDs
- CAN:
- Adds RZ/G3E CANFD support to the rcar_canfd driver.
- Preparatory work for CAN-XL support.
- Add self-tests framework with support for CAN physical interfaces.
- WiFi:
- mac80211:
- scan improvements with multi-link operation (MLO)
- Qualcomm (ath12k):
- enable AHB support for IPQ5332
- add monitor interface support to QCN9274
- add multi-link operation support to WCN7850
- add 802.11d scan offload support to WCN7850
- monitor mode for WCN7850, better 6 GHz regulatory
- Qualcomm (ath11k):
- restore hibernation support
- MediaTek (mt76):
- WiFi-7 improvements
- implement support for mt7990
- Intel (iwlwifi):
- enhanced multi-link single-radio (EMLSR) support on 5 GHz links
- rework device configuration
- RealTek (rtw88):
- improve throughput for RTL8814AU
- RealTek (rtw89):
- add multi-link operation support
- STA/P2P concurrency improvements
- support different SAR configs by antenna
- Bluetooth:
- introduce HCI Driver protocol
- btintel_pcie: do not generate coredump for diagnostic events
- btusb: add HCI Drv commands for configuring altsetting
- btusb: add RTL8851BE device 0x0bda:0xb850
- btusb: add new VID/PID 13d3/3584 for MT7922
- btusb: add new VID/PID 13d3/3630 and 13d3/3613 for MT7925
- btnxpuart: implement host-wakeup feature"
* tag 'net-next-6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1611 commits)
selftests/bpf: Fix bpf selftest build warning
selftests: netfilter: Fix skip of wildcard interface test
net: phy: mscc: Stop clearing the the UDPv4 checksum for L2 frames
net: openvswitch: Fix the dead loop of MPLS parse
calipso: Don't call calipso functions for AF_INET sk.
selftests/tc-testing: Add a test for HFSC eltree double add with reentrant enqueue behaviour on netem
net_sched: hfsc: Address reentrant enqueue adding class to eltree twice
octeontx2-pf: QOS: Refactor TC_HTB_LEAF_DEL_LAST callback
octeontx2-pf: QOS: Perform cache sync on send queue teardown
net: mana: Add support for Multi Vports on Bare metal
net: devmem: ncdevmem: remove unused variable
net: devmem: ksft: upgrade rx test to send 1K data
net: devmem: ksft: add 5 tuple FS support
net: devmem: ksft: add exit_wait to make rx test pass
net: devmem: ksft: add ipv4 support
net: devmem: preserve sockc_err
page_pool: fix ugly page_pool formatting
net: devmem: move list_add to net_devmem_bind_dmabuf.
selftests: netfilter: nft_queue.sh: include file transfer duration in log message
net: phy: mscc: Fix memory leak when using one step timestamping
...
|
||
|
Linus Torvalds
|
b08494a8f7 |
drm for 6.16-rc1
new drivers: - bring in the asahi uapi header standalone - nova-drm: stub driver rust dependencies (for nova-core): - auxiliary - bus abstractions - driver registration - sample driver - devres changes from driver-core - revocable changes core: - add Apple fourcc modifiers - add virtio capset definitions - extend EXPORT_SYNC_FILE for timeline syncobjs - convert to devm_platform_ioremap_resource - refactor shmem helper page pinning - DP powerup/down link helpers - remove disgusting turds - extended %p4cc in vsprintf.c to support fourcc prints - change vsprintf %p4cn to %p4chR, remove %p4cn - Add drm_file_err function - IN_FORMATS_ASYNC property - move sitronix from tiny to their own subdir rust: - add drm core infrastructure rust abstractions (device/driver, ioctl, file, gem) dma-buf: - adjust sg handling to not cache map on attach - allow setting dma-device for import - Add a helper to sort and deduplicate dma_fence arrays docs: - updated drm scheduler docs - fbdev todo update - fb rendering - actual brightness ttm: - fix delayed destroy resv object bridge: - add kunit tests - convert tc358775 to atomic - convert drivers to devm_drm_bridge_alloc - convert rk3066_hdmi to bridge driver scheduler: - add kunit tests panel: - refcount panels to improve lifetime handling - Powertip PH128800T004-ZZA01 - NLT NL13676BC25-03F, Tianma TM070JDHG34-00 - Himax HX8279/HX8279-D DDIC - Visionox G2647FB105 - Sitronix ST7571 - ZOTAC rotation quirk vkms: - allow attaching more displays i915: - xe3lpd display updates - vrr refactor - intel_display struct conversions - xe2hpd memory type identification - add link rate/count to i915_display_info - cleanup VGA plane handling - refactor HDCP GSC - fix SLPC wait boosting reference counting - add 20ms delay to engine reset - fix fence release on early probe errors xe: - SRIOV updates - BMG PCI ID update - support separate firmware for each GT - SVM fix, prelim SVM multi-device work - export fan speed - temp disable d3cold on BMG - backup VRAM in PM notifier instead of suspend/freeze - update xe_ttm_access_memory to use GPU for non-visible access - fix guc_info debugfs for VFs - use copy_from_user instead of __copy_from_user - append PCIe gen5 limitations to xe_firmware document amdgpu: - DSC cleanup - DC Scaling updates - Fused I2C-over-AUX updates - DMUB updates - Use drm_file_err in amdgpu - Enforce isolation updates - Use new dma_fence helpers - USERQ fixes - Documentation updates - SR-IOV updates - RAS updates - PSP 12 cleanups - GC 9.5 updates - SMU 13.x updates - VCN / JPEG SR-IOV updates amdkfd: - Update error messages for SDMA - Userptr updates - XNACK fixes radeon: - CIK doorbell cleanup nouveau: - add support for NVIDIA r570 GSP firmware - enable Hopper/Blackwell support nova-core: - fix task list - register definition infrastructure - move firmware into own rust module - register auxiliary device for nova-drm nova-drm: - initial driver skeleton msm: - GPU: - ACD (adaptive clock distribution) for X1-85 - drop fictional address_space_size - improve GMU HFI response time out robustness - fix crash when throttling during boot - DPU: - use single CTL path for flushing on DPU 5.x+ - improve SSPP allocation code for better sharing - Enabled SmartDMA on SM8150, SC8180X, SC8280XP, SM8550 - Added SAR2130P support - Disabled DSC support on MSM8937, MSM8917, MSM8953, SDM660 - DP: - switch to new audio helpers - better LTTPR handling - DSI: - Added support for SA8775P - Added SAR2130P support - HDMI: - Switched to use new helpers for ACR data - Fixed old standing issue of HPD not working in some cases amdxdna: - add dma-buf support - allow empty command submits renesas: - add dma-buf support - add zpos, alpha, blend support panthor: - fail properly for NO_MMAP bos - add SET_LABEL ioctl - debugfs BO dumping support imagination: - update DT bindings - support TI AM68 GPU hibmc: - improve interrupt handling and HPD support virtio: - add panic handler support rockchip: - add RK3588 support - add DP AUX bus panel support ivpu: - add heartbeat based hangcheck mediatek: - prepares support for MT8195/99 HDMIv2/DDCv2 anx7625: - improve HPD tegra: - speed up firmware loading -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmg2aVAACgkQDHTzWXnE hr6DjhAApr2fZjugU3EmpsARdcIWgEd+X65R97ef7RlUGqBKm2joSwZGOhH0oBsG 9WyO92Qzu6XMe8OibKqY4D2hir9UPz5v+uEWe3q9CzZGbNyAwyVRjVkaKpnI9upv 1dmHFI7HgPu6qbz6RfPIfgALBLXvVXMaQ4+ZgN/cLtZFa+OLAV5ByqWsRPPXZFb0 F/pQGQ4ursglfA+LH3SVPfnTN53lu93IlM5/Os9OQQGj+44w94zQ6DCm7CY1AugH n+RM/0Yv7WaoF1ByeOtq4FcrmLRrd+ozsvITbRZqhOx7zS/mhP8LRzAwgKWOYzSh puKunyQiSdHR7FSqSi8uyY3YumcLWNa/17LMKoTf+KqweJbKGE7RVBuFBn6WUdPb AYHZrSB4USAeyahdrrsU+q7ltu5urs5ckpbXsRurMiaUz/BLim1PIm3N5FDLPY7B PD1n1FcMUv3CmJT5Y+aNIQgmf1/dETESRTSAgSoOo3gNp6jdRCYqSuWIBsppibWT 26+tyz0/FGhE50QviHzg0Sv+jd/g93fN6snNlV8wNFMviq3bC69Toa+y3qJ5e7UC /42R7nCWdkCZJfr6E67rOaahe9TDV/LXLqPErwptOkdK8sMchaIgF+deybgTtTi/ zGRBfjLvb5ocYBmPbeGX4mtXNRpyZ3o9I0QUyGUO4zMwFXmFwn0= =jpVr -----END PGP SIGNATURE----- Merge tag 'drm-next-2025-05-28' of https://gitlab.freedesktop.org/drm/kernel Pull drm updates from Dave Airlie: "As part of building up nova-core/nova-drm pieces we've brought in some rust abstractions through this tree, aux bus being the main one, with devres changes also in the driver-core tree. Along with the drm core abstractions and enough nova-core/nova-drm to use them. This is still all stub work under construction, to build the nova driver upstream. The other big NVIDIA related one is nouveau adds support for Hopper/Blackwell GPUs, this required a new GSP firmware update to 570.144, and a bunch of rework in order to support multiple fw interfaces. There is also the introduction of an asahi uapi header file as a precursor to getting the real driver in later, but to unblock userspace mesa packages while the driver is trapped behind rust enablement. Otherwise it's the usual mixture of stuff all over, amdgpu, i915/xe, and msm being the main ones, and some changes to vsprintf. new drivers: - bring in the asahi uapi header standalone - nova-drm: stub driver rust dependencies (for nova-core): - auxiliary - bus abstractions - driver registration - sample driver - devres changes from driver-core - revocable changes core: - add Apple fourcc modifiers - add virtio capset definitions - extend EXPORT_SYNC_FILE for timeline syncobjs - convert to devm_platform_ioremap_resource - refactor shmem helper page pinning - DP powerup/down link helpers - extended %p4cc in vsprintf.c to support fourcc prints - change vsprintf %p4cn to %p4chR, remove %p4cn - Add drm_file_err function - IN_FORMATS_ASYNC property - move sitronix from tiny to their own subdir rust: - add drm core infrastructure rust abstractions (device/driver, ioctl, file, gem) dma-buf: - adjust sg handling to not cache map on attach - allow setting dma-device for import - Add a helper to sort and deduplicate dma_fence arrays docs: - updated drm scheduler docs - fbdev todo update - fb rendering - actual brightness ttm: - fix delayed destroy resv object bridge: - add kunit tests - convert tc358775 to atomic - convert drivers to devm_drm_bridge_alloc - convert rk3066_hdmi to bridge driver scheduler: - add kunit tests panel: - refcount panels to improve lifetime handling - Powertip PH128800T004-ZZA01 - NLT NL13676BC25-03F, Tianma TM070JDHG34-00 - Himax HX8279/HX8279-D DDIC - Visionox G2647FB105 - Sitronix ST7571 - ZOTAC rotation quirk vkms: - allow attaching more displays i915: - xe3lpd display updates - vrr refactor - intel_display struct conversions - xe2hpd memory type identification - add link rate/count to i915_display_info - cleanup VGA plane handling - refactor HDCP GSC - fix SLPC wait boosting reference counting - add 20ms delay to engine reset - fix fence release on early probe errors xe: - SRIOV updates - BMG PCI ID update - support separate firmware for each GT - SVM fix, prelim SVM multi-device work - export fan speed - temp disable d3cold on BMG - backup VRAM in PM notifier instead of suspend/freeze - update xe_ttm_access_memory to use GPU for non-visible access - fix guc_info debugfs for VFs - use copy_from_user instead of __copy_from_user - append PCIe gen5 limitations to xe_firmware document amdgpu: - DSC cleanup - DC Scaling updates - Fused I2C-over-AUX updates - DMUB updates - Use drm_file_err in amdgpu - Enforce isolation updates - Use new dma_fence helpers - USERQ fixes - Documentation updates - SR-IOV updates - RAS updates - PSP 12 cleanups - GC 9.5 updates - SMU 13.x updates - VCN / JPEG SR-IOV updates amdkfd: - Update error messages for SDMA - Userptr updates - XNACK fixes radeon: - CIK doorbell cleanup nouveau: - add support for NVIDIA r570 GSP firmware - enable Hopper/Blackwell support nova-core: - fix task list - register definition infrastructure - move firmware into own rust module - register auxiliary device for nova-drm nova-drm: - initial driver skeleton msm: - GPU: - ACD (adaptive clock distribution) for X1-85 - drop fictional address_space_size - improve GMU HFI response time out robustness - fix crash when throttling during boot - DPU: - use single CTL path for flushing on DPU 5.x+ - improve SSPP allocation code for better sharing - Enabled SmartDMA on SM8150, SC8180X, SC8280XP, SM8550 - Added SAR2130P support - Disabled DSC support on MSM8937, MSM8917, MSM8953, SDM660 - DP: - switch to new audio helpers - better LTTPR handling - DSI: - Added support for SA8775P - Added SAR2130P support - HDMI: - Switched to use new helpers for ACR data - Fixed old standing issue of HPD not working in some cases amdxdna: - add dma-buf support - allow empty command submits renesas: - add dma-buf support - add zpos, alpha, blend support panthor: - fail properly for NO_MMAP bos - add SET_LABEL ioctl - debugfs BO dumping support imagination: - update DT bindings - support TI AM68 GPU hibmc: - improve interrupt handling and HPD support virtio: - add panic handler support rockchip: - add RK3588 support - add DP AUX bus panel support ivpu: - add heartbeat based hangcheck mediatek: - prepares support for MT8195/99 HDMIv2/DDCv2 anx7625: - improve HPD tegra: - speed up firmware loading * tag 'drm-next-2025-05-28' of https://gitlab.freedesktop.org/drm/kernel: (1627 commits) drm/nouveau/tegra: Fix error pointer vs NULL return in nvkm_device_tegra_resource_addr() drm/xe: Default auto_link_downgrade status to false drm/xe/guc: Make creation of SLPC debugfs files conditional drm/i915/display: Add check for alloc_ordered_workqueue() and alloc_workqueue() drm/i915/dp_mst: Work around Thunderbolt sink disconnect after SINK_COUNT_ESI read drm/i915/ptl: Use everywhere the correct DDI port clock select mask drm/nouveau/kms: add support for GB20x drm/dp: add option to disable zero sized address only transactions. drm/nouveau: add support for GB20x drm/nouveau/gsp: add hal for fifo.chan.doorbell_handle drm/nouveau: add support for GB10x drm/nouveau/gf100-: track chan progress with non-WFI semaphore release drm/nouveau/nv50-: separate CHANNEL_GPFIFO handling out from CHANNEL_DMA drm/nouveau: add helper functions for allocating pinned/cpu-mapped bos drm/nouveau: add support for GH100 drm/nouveau: improve handling of 64-bit BARs drm/nouveau/gv100-: switch to volta semaphore methods drm/nouveau/gsp: support deeper page tables in COPY_SERVER_RESERVED_PDES drm/nouveau/gsp: init client VMMs with NV0080_CTRL_DMA_SET_PAGE_DIRECTORY drm/nouveau/gsp: fetch level shift and PDE from BAR2 VMM ... |
||
|
Linus Torvalds
|
48cfc5791d |
hardening updates for v6.16-rc1
- Update overflow helpers to ease refactoring of on-stack flex array instances (Gustavo A. R. Silva, Kees Cook) - lkdtm: Use SLAB_NO_MERGE instead of constructors (Harry Yoo) - Simplify CONFIG_CC_HAS_COUNTED_BY (Jan Hendrik Farr) - Disable u64 usercopy KUnit test on 32-bit SPARC (Thomas Weißschuh) - Add missed designated initializers now exposed by fixed randstruct (Nathan Chancellor, Kees Cook) - Document compilers versions for __builtin_dynamic_object_size - Remove ARM_SSP_PER_TASK GCC plugin - Fix GCC plugin randstruct, add selftests, and restore COMPILE_TEST builds - Kbuild: induce full rebuilds when dependencies change with GCC plugins, the Clang sanitizer .scl file, or the randstruct seed. - Kbuild: Switch from -Wvla to -Wvla-larger-than=1 - Correct several __nonstring uses for -Wunterminated-string-initialization -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRSPkdeREjth1dHnSE2KwveOeQkuwUCaDUq9gAKCRA2KwveOeQk u+ZCAQDhqpOE/yn5gfjyplIvaTtzj9CaW6g11AmPYrimJCuj3QD9G+0o35kzlXOw f0ZIj2U7LFNgbLos+20hQwhMFf1Zhgg= =OYzD -----END PGP SIGNATURE----- Merge tag 'hardening-v6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening updates from Kees Cook: - Update overflow helpers to ease refactoring of on-stack flex array instances (Gustavo A. R. Silva, Kees Cook) - lkdtm: Use SLAB_NO_MERGE instead of constructors (Harry Yoo) - Simplify CONFIG_CC_HAS_COUNTED_BY (Jan Hendrik Farr) - Disable u64 usercopy KUnit test on 32-bit SPARC (Thomas Weißschuh) - Add missed designated initializers now exposed by fixed randstruct (Nathan Chancellor, Kees Cook) - Document compilers versions for __builtin_dynamic_object_size - Remove ARM_SSP_PER_TASK GCC plugin - Fix GCC plugin randstruct, add selftests, and restore COMPILE_TEST builds - Kbuild: induce full rebuilds when dependencies change with GCC plugins, the Clang sanitizer .scl file, or the randstruct seed. - Kbuild: Switch from -Wvla to -Wvla-larger-than=1 - Correct several __nonstring uses for -Wunterminated-string-initialization * tag 'hardening-v6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (23 commits) Revert "hardening: Disable GCC randstruct for COMPILE_TEST" lib/tests: randstruct: Add deep function pointer layout test lib/tests: Add randstruct KUnit test randstruct: gcc-plugin: Remove bogus void member net: qede: Initialize qede_ll_ops with designated initializer scsi: qedf: Use designated initializer for struct qed_fcoe_cb_ops md/bcache: Mark __nonstring look-up table integer-wrap: Force full rebuild when .scl file changes randstruct: Force full rebuild when seed changes gcc-plugins: Force full rebuild when plugins change kbuild: Switch from -Wvla to -Wvla-larger-than=1 hardening: simplify CONFIG_CC_HAS_COUNTED_BY overflow: Fix direct struct member initialization in _DEFINE_FLEX() kunit/overflow: Add tests for STACK_FLEX_ARRAY_SIZE() helper overflow: Add STACK_FLEX_ARRAY_SIZE() helper input/joystick: magellan: Mark __nonstring look-up table const watchdog: exar: Shorten identity name to fit correctly mod_devicetable: Enlarge the maximum platform_device_id name length overflow: Clarify expectations for getting DEFINE_FLEX variable sizes compiler_types: Identify compiler versions for __builtin_dynamic_object_size ... |
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|
Linus Torvalds
|
f1975e4765 |
Summary
* Move kern_table members out of kernel/sysctl.c Moved a subset (tracing, panic, signal, stack_tracer and sparc) out of the kern_table array. The goal is for kern_table to only have sysctl elements. All this increases modularity by placing the ctl_tables closer to where they are used while reducing the chances of merge conflicts in kernel/sysctl.c. * Fixed sysctl unit test panic by relocating it to selftests * Testing These have been in linux-next from rc2, so they have had more than a month worth of testing. -----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEErkcJVyXmMSXOyyeQupfNUreWQU8FAmgwLsAACgkQupfNUreW QU9ghwv/VKZW+IXEvSjc8OiwntWkL7e5ddHY6O2Vf44MzhBefLTXmfx2HfkEA0Xw RaOQ28Hf/zQL83RqHHnXqI7JdGWQJUm8bCPwk4H3DCaF8qOfPVvblVYmfNL2auSY oyRRpRzZuY5EtKcrNjiHFHL2WIC8KvPVwS748oHY1eZY7kn1fcs8DDnNO4iuWop+ uJeDxu87wkRCFXF3DIM+MAHRvxSa8GHtZvb9EjAl/EHMbAyVSz3uTb7FdQDdnE09 s7P30EC03RHtgi3sd2Ku04dJsHLz7VErvpToxSH2KFlcdpJuWuCSCTT8XaD8kII8 kYYCxNpmPOf4LzEy/J2vVZB0PSHrHvuQCH7iGy+8wOPk9GHTOMkKMMXVmeGnAsef AiosPYroxXp/nBFcuNs6/1LKpsdpFr2F6u6oMgbzLaW1Xe/oc+6oynuOgeVj9LuM FrSxSwaVvpdwHYHujYPQAAWIgKRzITiEXnCgtSyohFquKb+7E8ZspwjOqYH2xWMQ WwABNRqY =45X2 -----END PGP SIGNATURE----- Merge tag 'sysctl-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl Pull sysctl updates from Joel Granados: - Move kern_table members out of kernel/sysctl.c Moved a subset (tracing, panic, signal, stack_tracer and sparc) out of the kern_table array. The goal is for kern_table to only have sysctl elements. All this increases modularity by placing the ctl_tables closer to where they are used while reducing the chances of merge conflicts in kernel/sysctl.c. - Fixed sysctl unit test panic by relocating it to selftests * tag 'sysctl-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl: sysctl: Close test ctl_headers with a for loop sysctl: call sysctl tests with a for loop sysctl: Add 0012 to test the u8 range check sysctl: move u8 register test to lib/test_sysctl.c sparc: mv sparc sysctls into their own file under arch/sparc/kernel stack_tracer: move sysctl registration to kernel/trace/trace_stack.c tracing: Move trace sysctls into trace.c signal: Move signal ctl tables into signal.c panic: Move panic ctl tables into panic.c |
||
|
Jens Axboe
|
375700bab5 |
llist: make llist_add_batch() a static inline
The function is small enough that it should be, and it's a (very) hot path for io_uring. Doing this actually reduces my vmlinux text size for my standard build/test box. Before: axboe@r7625 ~/g/linux (test)> size vmlinux text data bss dec hex filename 19892174 5938310 2470432 28300916 1afd674 vmlinux After: axboe@r7625 ~/g/linux (test)> size vmlinux text data bss dec hex filename 19891878 5938310 2470436 28300624 1afd550 vmlinux Link: https://lkml.kernel.org/r/f1d104c6-7ac8-457a-a53d-6bb741421b2f@kernel.dk Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Linus Torvalds
|
049294830b |
Thermal control updates for 6.16-rc1
- Add Platform Temperature Control (PTC) support to the Intel int340x
thermal driver (Srinivas Pandruvada).
- Make the Hisilicon thermal driver compile by default when ARCH_HISI
is set (Krzysztof Kozlowski).
- Clean up printk() format by using %pC instead of %pCn in the bcm2835
thermal driver (Luca Ceresoli).
- Fix variable name coding style in the AmLogic thermal driver (Enrique
Isidoro Vazquez Ramos).
- Fix missing debugfs entry removal on failure by using the devm_
variant in the LVTS thermal driver (AngeloGioacchino Del Regno).
- Remove the unused lvts_debugfs_exit() function as the devm_ variant
introduced before takes care of removing the debugfs entry in the
LVTS driver (Arnd Bergmann).
- Add the Airoha EN7581 thermal sensor support along with its DT
bindings (Christian Marangi).
- Add ipq5018 compatible string DT binding, cleanup and add its suppot
to the QCom Tsens thermal driver (Sricharan Ramabadhran, George
Moussalem).
- Fix comments typos in the Airoha driver (Christian Marangi, Colin Ian
King).
- Address a sparse warning by making a local variable static in the
QCom thermal driver (George Moussalem).
- Fix the usage of the _SCP control method in the driver for ACPI
thermal zones (Armin Wolf).
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Merge tag 'thermal-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control updates from Rafael Wysocki:
"These add support for a new feature, Platform Temperature Control
(PTC), to the Intel int340x thermal driver, add support for the Airoha
EN7581 thermal sensor and the IPQ5018 platform, fix up the ACPI
thermal zones handling, fix other assorted issues and clean up code
Specifics:
- Add Platform Temperature Control (PTC) support to the Intel int340x
thermal driver (Srinivas Pandruvada)
- Make the Hisilicon thermal driver compile by default when ARCH_HISI
is set (Krzysztof Kozlowski)
- Clean up printk() format by using %pC instead of %pCn in the
bcm2835 thermal driver (Luca Ceresoli)
- Fix variable name coding style in the AmLogic thermal driver
(Enrique Isidoro Vazquez Ramos)
- Fix missing debugfs entry removal on failure by using the devm_
variant in the LVTS thermal driver (AngeloGioacchino Del Regno)
- Remove the unused lvts_debugfs_exit() function as the devm_ variant
introduced before takes care of removing the debugfs entry in the
LVTS driver (Arnd Bergmann)
- Add the Airoha EN7581 thermal sensor support along with its DT
bindings (Christian Marangi)
- Add ipq5018 compatible string DT binding, cleanup and add its
suppot to the QCom Tsens thermal driver (Sricharan Ramabadhran,
George Moussalem)
- Fix comments typos in the Airoha driver (Christian Marangi, Colin
Ian King)
- Address a sparse warning by making a local variable static in the
QCom thermal driver (George Moussalem)
- Fix the usage of the _SCP control method in the driver for ACPI
thermal zones (Armin Wolf)"
* tag 'thermal-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thermal: qcom: ipq5018: make ops_ipq5018 struct static
thermal/drivers/airoha: Fix spelling mistake "calibrarion" -> "calibration"
ACPI: thermal: Execute _SCP before reading trip points
ACPI: OSI: Stop advertising support for "3.0 _SCP Extensions"
thermal/drivers/airoha: Fix spelling mistake
thermal/drivers/qcom/tsens: Add support for IPQ5018 tsens
thermal/drivers/qcom/tsens: Add support for tsens v1 without RPM
thermal/drivers/qcom/tsens: Update conditions to strictly evaluate for IP v2+
dt-bindings: thermal: qcom-tsens: Add ipq5018 compatible
thermal/drivers: Add support for Airoha EN7581 thermal sensor
dt-bindings: thermal: Add support for Airoha EN7581 thermal sensor
thermal/drivers/mediatek/lvts: Remove unused lvts_debugfs_exit
thermal/drivers/mediatek/lvts: Fix debugfs unregister on failure
thermal/drivers/amlogic: Rename Uptat to uptat to follow kernel coding style
vsprintf: remove redundant and unused %pCn format specifier
thermal/drivers/bcm2835: Use %pC instead of %pCn
thermal/drivers/hisi: Do not enable by default during compile testing
thermal: int340x: processor_thermal: Platform temperature control documentation
thermal: intel: int340x: Enable platform temperature control
thermal: intel: int340x: Add platform temperature control interface
|
||
|
Linus Torvalds
|
a9e6060bb2 |
sound updates for 6.16-rc1
We've received a lot of activities in this cycle, mostly about leaf
driver codes rather than the core part, but with a good mixture of
code cleanups and new driver additions. Below are some highlights:
* ASoC:
- Support for automatically enumerating DAIs from standards conforming
SoundWire SDCA devices; not much used as of this writing, rather for
future implementations
- Conversion of quite a few drivers to newer GPIO APIs
- Continued cleanups and helper usages in allover places
- Support for a wider range of Intel AVS platforms
- Support for AMD ACP 7.x platforms, Cirrus Logic CS35L63 and CS48L32
Everest Semiconductor ES8375 and ES8389, Longsoon-1 AC'97
controllers, nVidia Tegra264, Richtek ALC203 and RT9123 and Rockchip
SAI controllers
* HD-audio:
- Lots of cleanups of TAS2781 codec drivers
- A new HD-audio control bound via ACPI for Nvidia
- Support for Tegra264, Intel WCL, usual new codec quirks
* USB-audio:
- Fix a race at removal of MIDI device
- Pioneer DJM-V10 support, Scarlett2 driver cleanups
* Misc:
- Cleanups of deprecated PCI functions
- Removal of unused / dead function codes
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Merge tag 'sound-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"We've received a lot of activities in this cycle, mostly about leaf
driver codes rather than the core part, but with a good mixture of
code cleanups and new driver additions. Below are some highlights:
ASoC:
- Support for automatically enumerating DAIs from standards
conforming SoundWire SDCA devices; not much used as of this
writing, rather for future implementations
- Conversion of quite a few drivers to newer GPIO APIs
- Continued cleanups and helper usages in allover places
- Support for a wider range of Intel AVS platforms
- Support for AMD ACP 7.x platforms, Cirrus Logic CS35L63 and CS48L32
Everest Semiconductor ES8375 and ES8389, Longsoon-1 AC'97
controllers, nVidia Tegra264, Richtek ALC203 and RT9123 and
Rockchip SAI controllers
HD-audio:
- Lots of cleanups of TAS2781 codec drivers
- A new HD-audio control bound via ACPI for Nvidia
- Support for Tegra264, Intel WCL, usual new codec quirks
USB-audio:
- Fix a race at removal of MIDI device
- Pioneer DJM-V10 support, Scarlett2 driver cleanups
Misc:
- Cleanups of deprecated PCI functions
- Removal of unused / dead function codes"
* tag 'sound-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (364 commits)
firmware: cs_dsp: Fix OOB memory read access in KUnit test
ASoC: codecs: add support for ES8375
ASoC: dt-bindings: Add Everest ES8375 audio CODEC
ALSA: hda: acpi: Make driver's match data const static
ALSA: hda: acpi: Use SYSTEM_SLEEP_PM_OPS()
ALSA: atmel: Replace deprecated strcpy() with strscpy()
ALSA: core: fix up bus match const issues.
ASoC: wm_adsp: Make cirrus_dir const
ASoC: tegra: Tegra264 support in isomgr_bw
ASoC: tegra: AHUB: Add Tegra264 support
ASoC: tegra: ADX: Add Tegra264 support
ASoC: tegra: AMX: Add Tegra264 support
ASoC: tegra: I2S: Add Tegra264 support
ASoC: tegra: Update PLL rate for Tegra264
ASoC: tegra: ASRC: Update ARAM address
ASoC: tegra: ADMAIF: Add Tegra264 support
ASoC: tegra: CIF: Add Tegra264 support
dt-bindings: ASoC: Document Tegra264 APE support
dt-bindings: ASoC: admaif: Add missing properties
ASoC: dt-bindings: audio-graph-card2: reference audio-graph routing property
...
|
||
|
Linus Torvalds
|
97851c6016 |
lib/ratelimit: Reduce false-positive and silent misses
Changes ------- * Reduce open-coded use of ratelimit_state structure fields. * Convert the ->missed field to atomic_t. * Count misses that are due to lock contention. * Eliminate jiffies=0 special case. * Reduce ___ratelimit() false-positive rate limiting (Petr Mladek). * Allow zero ->burst to hard-disable rate limiting. * Optimize away atomic operations when a miss is guaranteed. * Warn if ->interval or ->burst are negative (Petr Mladek). * Simplify the resulting code. A smoke test and stress test have been created, but they are not yet ready for mainline. With luck, we will offer them for the v6.17 merge window. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmgzWdgTHHBhdWxtY2tA a2VybmVsLm9yZwAKCRCevxLzctn7jBnZD/wKD+5f8qwEuaib901yLb/s4ZkS3Aly mcPLAcTSFc7jp3c188V2qPAAgobQW+NnOLZ/TuB34tvS/Ngm/Yo1EPiHD2AXPzfY FPlgmjvOQQQo9dfA1PNOegh/aKYhMJrho85cilcM1TojuSSVbo1lG1FbuvqMJ9Ub jPHRB6KaFDnhwJkWHJ4Fjl1z1TQcyxjrBoswEcMCKapNqrm6IiXLvw03Nme3wa7F tr30xue5GV/FyHMa14g/8GSpZ88Lr5VGsOoC0wz2KhfMsZcFRkmslgm8mxHawwXj MbQaW7Th+fD7H0pC/lbHIiKaXvizYbQCPXr4qf5gfqNf4R/BHE1QdSTmP45kjEXO CmZEwwVx8cVdyoY9N9udDhNZly/U83G3F1n38jdM2SCPjn3F8BAanZRwakLEvmCC XUQ0bvzQvJl0LM5ktyaaMZdWf3p6uah7otryCPdsA5V7BFgyx5ZHniXY6v1JgfhX 2nmYRO3vEoQ39Z+vPtu7DvS64oe/aYgkSIoG68rKhSb4S+nIdIZ8zwB1af4Nkk8e YZwlwjIRw+RCu/QET4GXLE1tHQ031kWR/xG8nDnNGE3XCjnfRArAcdMZNDlc3U5k GT1g8zOJR2jmlEvWUZwpmclc1yeHXTK1P9nOHmzhxw26eiXmY353PZcND9Ktnt/a RH550D0vUqFM7A== =ivk+ -----END PGP SIGNATURE----- Merge tag 'ratelimit.2025.05.25a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull rate-limit updates from Paul McKenney: "lib/ratelimit: Reduce false-positive and silent misses: - Reduce open-coded use of ratelimit_state structure fields. - Convert the ->missed field to atomic_t. - Count misses that are due to lock contention. - Eliminate jiffies=0 special case. - Reduce ___ratelimit() false-positive rate limiting (Petr Mladek). - Allow zero ->burst to hard-disable rate limiting. - Optimize away atomic operations when a miss is guaranteed. - Warn if ->interval or ->burst are negative (Petr Mladek). - Simplify the resulting code. A smoke test and stress test have been created, but they are not yet ready for mainline. With luck, we will offer them for the v6.17 merge window" * tag 'ratelimit.2025.05.25a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: ratelimit: Drop redundant accesses to burst ratelimit: Use nolock_ret restructuring to collapse common case code ratelimit: Use nolock_ret label to collapse lock-failure code ratelimit: Use nolock_ret label to save a couple of lines of code ratelimit: Simplify common-case exit path ratelimit: Warn if ->interval or ->burst are negative ratelimit: Avoid atomic decrement under lock if already rate-limited ratelimit: Avoid atomic decrement if already rate-limited ratelimit: Don't flush misses counter if RATELIMIT_MSG_ON_RELEASE ratelimit: Force re-initialization when rate-limiting re-enabled ratelimit: Allow zero ->burst to disable ratelimiting ratelimit: Reduce ___ratelimit() false-positive rate limiting ratelimit: Avoid jiffies=0 special case ratelimit: Count misses due to lock contention ratelimit: Convert the ->missed field to atomic_t drm/amd/pm: Avoid open-coded use of ratelimit_state structure's internals drm/i915: Avoid open-coded use of ratelimit_state structure's ->missed field random: Avoid open-coded use of ratelimit_state structure's ->missed field ratelimit: Create functions to handle ratelimit_state internals |
||
|
Linus Torvalds
|
664a231d90 |
Carve out the resctrl filesystem-related code into fs/resctrl/ so that
multiple architectures can share the fs API for manipulating their
respective hw resource control implementation. This is the second step
in the work towards sharing the resctrl filesystem interface, the next
one being plugging ARM's MPAM into the aforementioned fs API.
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Merge tag 'x86_cache_for_v6.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 resource control updates from Borislav Petkov:
"Carve out the resctrl filesystem-related code into fs/resctrl/ so that
multiple architectures can share the fs API for manipulating their
respective hw resource control implementation.
This is the second step in the work towards sharing the resctrl
filesystem interface, the next one being plugging ARM's MPAM into the
aforementioned fs API"
* tag 'x86_cache_for_v6.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (25 commits)
MAINTAINERS: Add reviewers for fs/resctrl
x86,fs/resctrl: Move the resctrl filesystem code to live in /fs/resctrl
x86/resctrl: Always initialise rid field in rdt_resources_all[]
x86/resctrl: Relax some asm #includes
x86/resctrl: Prefer alloc(sizeof(*foo)) idiom in rdt_init_fs_context()
x86/resctrl: Squelch whitespace anomalies in resctrl core code
x86/resctrl: Move pseudo lock prototypes to include/linux/resctrl.h
x86/resctrl: Fix types in resctrl_arch_mon_ctx_{alloc,free}() stubs
x86/resctrl: Move enum resctrl_event_id to resctrl.h
x86/resctrl: Move the filesystem bits to headers visible to fs/resctrl
fs/resctrl: Add boiler plate for external resctrl code
x86/resctrl: Add 'resctrl' to the title of the resctrl documentation
x86/resctrl: Split trace.h
x86/resctrl: Expand the width of domid by replacing mon_data_bits
x86/resctrl: Add end-marker to the resctrl_event_id enum
x86/resctrl: Move is_mba_sc() out of core.c
x86/resctrl: Drop __init/__exit on assorted symbols
x86/resctrl: Resctrl_exit() teardown resctrl but leave the mount point
x86/resctrl: Check all domains are offline in resctrl_exit()
x86/resctrl: Rename resctrl_sched_in() to begin with "resctrl_arch_"
...
|
||
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Linus Torvalds
|
ba45037098 |
linux_kselftest-kunit-6.16-rc1
- Enables qemu_config for riscv32, sparc 64-bit, PowerPC 32-bit BE and 64-bit LE. - Enables CONFIG_SPARC32 to clearly differentiate between sparc 32-bit and 64-bit configurations. - Enables CONFIG_CPU_BIG_ENDIAN to clearly differentiate between powerpc LE and BE configurations. - Add feature to list available architectures to kunit tool. - Fixes to bugs and changes to documentation. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmgwylUACgkQCwJExA0N Qxz1/w/+NVxyC80omepHOxoi8Y+j5vWSlQ3S4n+HThyeb4srJlvJuidZN+zrRIEU QLKo4edUDa25I+JkXnnw/8gLG1000PESM/VjC6NIzhCrEHc/cX/WS9OlwbR5JkpW wOlxju3vWYrfy5i+LSYiH+v822WlSZsznH9AM9w+ws4FWoRNN+7LiEitj2LElrWI XHpEYDsBhePu2cFQgAdHaQ5YcMmG64KqeX5Xj+cGjtURciijQDxVuX5k03n0qkbn YrH4U0it8ZqxJTImpExnqlP2G8uZS72hE91vK0hwW9oZ+/k9vVeBQWJ13JvNKveb +zHGUimJ0n6d5HB5ZFaUAazkbZHKq7mWPp86lBYNiRXsseDwwqDSva5tfUxzXGQP MNDK2wrHusH0beRdzdlPjynJABxiOnczmBOAj/Y6t+ZgC2D8BHvyvj+Pecdz3Tr0 YPLgpY72LqxTKDCvOf91IeT8EFaAjyGfVcN6SvUJ/zjPc7UcopM2DEQvlSZcU/Ac EAzgWmFfkwowSWwr8Q4GOXuKzkMj65QhouJrSCoBjuHQuUxa2MZxAbv5snPmSLs0 635MdPU9uPAEvZKJTbVlXKBMCM3FrS8Buy+dHFEuUiUy0i3PndV5aJUQpIxwM/Du +DjQkREy6wsIHXSTu4lm+zoZ0yVKQdEZJgsYjY+JfRQ25cLWgiQ= =32OH -----END PGP SIGNATURE----- Merge tag 'linux_kselftest-kunit-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kunit updates from Shuah Khan: - Enable qemu_config for riscv32, sparc 64-bit, PowerPC 32-bit BE and 64-bit LE - Enable CONFIG_SPARC32 to clearly differentiate between sparc 32-bit and 64-bit configurations - Enable CONFIG_CPU_BIG_ENDIAN to clearly differentiate between powerpc LE and BE configurations - Add feature to list available architectures to kunit tool - Fixes to bugs and changes to documentation * tag 'linux_kselftest-kunit-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: Fix wrong parameter to kunit_deactivate_static_stub() kunit: tool: add test counts to JSON output Documentation: kunit: improve example on testing static functions kunit: executor: Remove const from kunit_filter_suites() allocation type kunit: qemu_configs: Disable faulting tests on 32-bit SPARC kunit: qemu_configs: Add 64-bit SPARC configuration kunit: qemu_configs: sparc: Explicitly enable CONFIG_SPARC32=y kunit: qemu_configs: Add PowerPC 32-bit BE and 64-bit LE kunit: qemu_configs: powerpc: Explicitly enable CONFIG_CPU_BIG_ENDIAN=y kunit: tool: Implement listing of available architectures kunit: qemu_configs: Add riscv32 config kunit: configs: Enable CONFIG_INIT_STACK_ALL_PATTERN in all_tests |
||
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Linus Torvalds
|
14418ddcc2 |
This update includes the following changes:
API: - Fix memcpy_sglist to handle partially overlapping SG lists. - Use memcpy_sglist to replace null skcipher. - Rename CRYPTO_TESTS to CRYPTO_BENCHMARK. - Flip CRYPTO_MANAGER_DISABLE_TEST into CRYPTO_SELFTESTS. - Hide CRYPTO_MANAGER. - Add delayed freeing of driver crypto_alg structures. Compression: - Allocate large buffers on first use instead of initialisation in scomp. - Drop destination linearisation buffer in scomp. - Move scomp stream allocation into acomp. - Add acomp scatter-gather walker. - Remove request chaining. - Add optional async request allocation. Hashing: - Remove request chaining. - Add optional async request allocation. - Move partial block handling into API. - Add ahash support to hmac. - Fix shash documentation to disallow usage in hard IRQs. Algorithms: - Remove unnecessary SIMD fallback code on x86 and arm/arm64. - Drop avx10_256 xts(aes)/ctr(aes) on x86. - Improve avx-512 optimisations for xts(aes). - Move chacha arch implementations into lib/crypto. - Move poly1305 into lib/crypto and drop unused Crypto API algorithm. - Disable powerpc/poly1305 as it has no SIMD fallback. - Move sha256 arch implementations into lib/crypto. - Convert deflate to acomp. - Set block size correctly in cbcmac. Drivers: - Do not use sg_dma_len before mapping in sun8i-ss. - Fix warm-reboot failure by making shutdown do more work in qat. - Add locking in zynqmp-sha. - Remove cavium/zip. - Add support for PCI device 0x17D8 to ccp. - Add qat_6xxx support in qat. - Add support for RK3576 in rockchip-rng. - Add support for i.MX8QM in caam. Others: - Fix irq_fpu_usable/kernel_fpu_begin inconsistency during CPU bring-up. - Add new SEV/SNP platform shutdown API in ccp. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEn51F/lCuNhUwmDeSxycdCkmxi6cFAmgz47AACgkQxycdCkmx i6fvKRAAr4Xa903L0r1Q1P1alQqoFFCqimUWeH72m68LiWynHWi0lUo0z/+tKweg mnPStz7/Ha9HRHJjdNCMPnlJqXQDkuH3bIOuBJCwduDuhHo9VGOd46XGzmGMv3gb HKuZhI0lk7pznK3CSyD/2nHmbDCHD+7feTZSBMoN9mm875+aSoM6fdxgak8uPFcq KbB1L+hObTn2kAPSqRrNOR8/xG2N7hdH8eax7Li+LAtqYNVT5HvWVECsB/CKRPfB sgAv3UTzcIFapSSHUHaONppSeoqPAIAeV7SdQhJvlT+EUUR/h/B6+D9OUQQqbphQ LBalgTnqMKl0ymDEQFQ6QyYCat9ZfNmDft2WcXEsxc8PxImkgJI1W3B8O51sOjbG 78D8JqVQ96dleo4FsBhM2wfG0b41JM6zU4raC4vS7a3qsUS+Q1MpehvcS1iORicy SpGdE8e7DLlxKhzWyW1xJnbrtMZDC7Sa2hUnxrvP0/xOvRhChKscRVtWcf0a5q7X 8JmuvwVSOJuSbQ3MeFbQvpo5lR9+0WsNjM6e9miiH6Y7vZUKmWcq2yDp377qVzeh 7NK6+OwGIQZZExrmtPw2BXwssT9Eg+ks6Y7g2Ne7yzvrjVNfEPY7Cws/5w7p8mRS qhrcpbJNFlWgD7YYkmGZFTQ8DCN25ipP8lklO/hbcfchqLE/o1o= =O8L5 -----END PGP SIGNATURE----- Merge tag 'v6.16-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "API: - Fix memcpy_sglist to handle partially overlapping SG lists - Use memcpy_sglist to replace null skcipher - Rename CRYPTO_TESTS to CRYPTO_BENCHMARK - Flip CRYPTO_MANAGER_DISABLE_TEST into CRYPTO_SELFTESTS - Hide CRYPTO_MANAGER - Add delayed freeing of driver crypto_alg structures Compression: - Allocate large buffers on first use instead of initialisation in scomp - Drop destination linearisation buffer in scomp - Move scomp stream allocation into acomp - Add acomp scatter-gather walker - Remove request chaining - Add optional async request allocation Hashing: - Remove request chaining - Add optional async request allocation - Move partial block handling into API - Add ahash support to hmac - Fix shash documentation to disallow usage in hard IRQs Algorithms: - Remove unnecessary SIMD fallback code on x86 and arm/arm64 - Drop avx10_256 xts(aes)/ctr(aes) on x86 - Improve avx-512 optimisations for xts(aes) - Move chacha arch implementations into lib/crypto - Move poly1305 into lib/crypto and drop unused Crypto API algorithm - Disable powerpc/poly1305 as it has no SIMD fallback - Move sha256 arch implementations into lib/crypto - Convert deflate to acomp - Set block size correctly in cbcmac Drivers: - Do not use sg_dma_len before mapping in sun8i-ss - Fix warm-reboot failure by making shutdown do more work in qat - Add locking in zynqmp-sha - Remove cavium/zip - Add support for PCI device 0x17D8 to ccp - Add qat_6xxx support in qat - Add support for RK3576 in rockchip-rng - Add support for i.MX8QM in caam Others: - Fix irq_fpu_usable/kernel_fpu_begin inconsistency during CPU bring-up - Add new SEV/SNP platform shutdown API in ccp" * tag 'v6.16-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (382 commits) x86/fpu: Fix irq_fpu_usable() to return false during CPU onlining crypto: qat - add missing header inclusion crypto: api - Redo lookup on EEXIST Revert "crypto: testmgr - Add hash export format testing" crypto: marvell/cesa - Do not chain submitted requests crypto: powerpc/poly1305 - add depends on BROKEN for now Revert "crypto: powerpc/poly1305 - Add SIMD fallback" crypto: ccp - Add missing tee info reg for teev2 crypto: ccp - Add missing bootloader info reg for pspv5 crypto: sun8i-ce - move fallback ahash_request to the end of the struct crypto: octeontx2 - Use dynamic allocated memory region for lmtst crypto: octeontx2 - Initialize cptlfs device info once crypto: xts - Only add ecb if it is not already there crypto: lrw - Only add ecb if it is not already there crypto: testmgr - Add hash export format testing crypto: testmgr - Use ahash for generic tfm crypto: hmac - Add ahash support crypto: testmgr - Ignore EEXIST on shash allocation crypto: algapi - Add driver template support to crypto_inst_setname crypto: shash - Set reqsize in shash_alg ... |
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Linus Torvalds
|
15d90a5e55 |
CRC updates for 6.16
Cleanups for the kernel's CRC (cyclic redundancy check) code: - Use __ro_after_init where appropriate - Remove unnecessary static_key on s390 - Rename some source code files - Rename the crc32 and crc32c crypto API modules - Use subsys_initcall instead of arch_initcall - Restore maintainers for crc_kunit.c - Fold crc16_byte() into crc16.c - Add some SPDX license identifiers -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQSacvsUNc7UX4ntmEPzXCl4vpKOKwUCaDNd3xQcZWJpZ2dlcnNA Z29vZ2xlLmNvbQAKCRDzXCl4vpKOKz0tAQCDqDA4Jd/54nnKpChMlKH8MTQDuwfz 8GHZi50mn4Rw5gD/f+hOGItPfswBId/+MZy+rKWL7bE2e9DdJdtoqRRtwA4= =RWFl -----END PGP SIGNATURE----- Merge tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux Pull CRC updates from Eric Biggers: "Cleanups for the kernel's CRC (cyclic redundancy check) code: - Use __ro_after_init where appropriate - Remove unnecessary static_key on s390 - Rename some source code files - Rename the crc32 and crc32c crypto API modules - Use subsys_initcall instead of arch_initcall - Restore maintainers for crc_kunit.c - Fold crc16_byte() into crc16.c - Add some SPDX license identifiers" * tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: lib/crc32: add SPDX license identifier lib/crc16: unexport crc16_table and crc16_byte() w1: ds2406: use crc16() instead of crc16_byte() loop MAINTAINERS: add crc_kunit.c back to CRC LIBRARY lib/crc: make arch-optimized code use subsys_initcall crypto: crc32 - remove "generic" from file and module names x86/crc: drop "glue" from filenames sparc/crc: drop "glue" from filenames s390/crc: drop "glue" from filenames powerpc/crc: rename crc32-vpmsum_core.S to crc-vpmsum-template.S powerpc/crc: drop "glue" from filenames arm64/crc: drop "glue" from filenames arm/crc: drop "glue" from filenames s390/crc32: Remove no-op module init and exit functions s390/crc32: Remove have_vxrs static key lib/crc: make the CPU feature static keys __ro_after_init |
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Suren Baghdasaryan
|
12ca42c237 |
alloc_tag: allocate percpu counters for module tags dynamically
When a module gets unloaded it checks whether any of its tags are still in
use and if so, we keep the memory containing module's allocation tags
alive until all tags are unused. However percpu counters referenced by
the tags are freed by free_module(). This will lead to UAF if the memory
allocated by a module is accessed after module was unloaded.
To fix this we allocate percpu counters for module allocation tags
dynamically and we keep it alive for tags which are still in use after
module unloading. This also removes the requirement of a larger
PERCPU_MODULE_RESERVE when memory allocation profiling is enabled because
percpu memory for counters does not need to be reserved anymore.
Link: https://lkml.kernel.org/r/20250517000739.5930-1-surenb@google.com
Fixes:
|
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Casey Chen
|
780138b123 |
alloc_tag: check mem_profiling_support in alloc_tag_init
If mem_profiling_support is false, for example by sysctl.vm.mem_profiling=never, alloc_tag_init should skip module tags allocation, codetag type registration and procfs init. Link: https://lkml.kernel.org/r/20250513182602.121843-1-cachen@purestorage.com Signed-off-by: Casey Chen <cachen@purestorage.com> Reviewed-by: Yuanyuan Zhong <yzhong@purestorage.com> Acked-by: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Eric Biggers
|
b82f72292a |
lib/crc32: remove unused support for CRC32C combination
crc32c_combine() and crc32c_shift() are no longer used (except by the KUnit test that tests them), and their current implementation is very slow. Remove them. Signed-off-by: Eric Biggers <ebiggers@google.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Link: https://patch.msgid.link/20250519175012.36581-8-ebiggers@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Tzung-Bi Shih
|
772e50a76e |
kunit: Fix wrong parameter to kunit_deactivate_static_stub()
kunit_deactivate_static_stub() accepts real_fn_addr instead of
replacement_addr. In the case, it always passes NULL to
kunit_deactivate_static_stub().
Fix it.
Link: https://lore.kernel.org/r/20250520082050.2254875-1-tzungbi@kernel.org
Fixes:
|
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Luca Ceresoli
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592ebd77e6 |
vsprintf: remove redundant and unused %pCn format specifier
%pC and %pCn print the same string, and commit
|
||
|
Yury Norov [NVIDIA]
|
13f0a02bf4 |
find: Add find_first_andnot_bit()
The function helps to implement cpumask_andnot() APIs. Signed-off-by: Yury Norov [NVIDIA] <yury.norov@gmail.com> Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: James Morse <james.morse@arm.com> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Reviewed-by: Fenghua Yu <fenghuay@nvidia.com> Tested-by: James Morse <james.morse@arm.com> Tested-by: Tony Luck <tony.luck@intel.com> Tested-by: Fenghua Yu <fenghuay@nvidia.com> Link: https://lore.kernel.org/20250515165855.31452-3-james.morse@arm.com |
||
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Lee Trager
|
e505e14073 |
pldmfw: Don't require send_package_data or send_component_table to be defined
Not all drivers require send_package_data or send_component_table when updating firmware. Instead of forcing drivers to implement a stub allow these functions to go undefined. Signed-off-by: Lee Trager <lee@trager.us> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Simon Horman <horms@kernel.org> Acked-by: Jacob Keller <jacob.e.keller@intel.com> Link: https://patch.msgid.link/20250512190109.2475614-2-lee@trager.us Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
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Eric Biggers
|
289c99bec7 |
lib/crc32: add SPDX license identifier
lib/crc32.c and include/linux/crc32.h got missed by the bulk SPDX conversion because of the nonstandard explanation of the license. However, crc32.c clearly states that it's licensed under the GNU General Public License, Version 2. And the comment in crc32.h clearly indicates that it's meant to have the same license as crc32.c. Therefore, apply SPDX-License-Identifier: GPL-2.0-only to both files. Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20250514052409.194822-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
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Eric Biggers
|
3937f6db6e |
lib/crc16: unexport crc16_table and crc16_byte()
Now that neither crc16_table nor crc16_byte() is used outside lib/crc16.c, fold them into lib/crc16.c. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250513022115.39109-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Christoph Hellwig
|
f1c2bca267 |
xarray: fix kerneldoc for __xa_cmpxchg
Fix the documentation for __xa_cmpxchg to actually describe the cmpxch-like semantics correctly, based on the version for xa_cmpxchg. Link: https://lkml.kernel.org/r/20250507051656.3900864-1-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Eric Biggers
|
698de82278 |
crypto: testmgr - make it easier to enable the full set of tests
Currently the full set of crypto self-tests requires CONFIG_CRYPTO_MANAGER_EXTRA_TESTS=y. This is problematic in two ways. First, developers regularly overlook this option. Second, the description of the tests as "extra" sometimes gives the impression that it is not required that all algorithms pass these tests. Given that the main use case for the crypto self-tests is for developers, make enabling CONFIG_CRYPTO_SELFTESTS=y just enable the full set of crypto self-tests by default. The slow tests can still be disabled by adding the command-line parameter cryptomgr.noextratests=1, soon to be renamed to cryptomgr.noslowtests=1. The only known use case for doing this is for people trying to use the crypto self-tests to satisfy the FIPS 140-3 pre-operational self-testing requirements when the kernel is being validated as a FIPS 140-3 cryptographic module. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Eric Biggers
|
40b9969796 |
crypto: testmgr - replace CRYPTO_MANAGER_DISABLE_TESTS with CRYPTO_SELFTESTS
The negative-sense of CRYPTO_MANAGER_DISABLE_TESTS is a longstanding mistake that regularly causes confusion. Especially bad is that you can have CRYPTO=n && CRYPTO_MANAGER_DISABLE_TESTS=n, which is ambiguous. Replace CRYPTO_MANAGER_DISABLE_TESTS with CRYPTO_SELFTESTS which has the expected behavior. The tests continue to be disabled by default. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Eric Biggers
|
bdc2a55687 |
crypto: lib/chacha - add array bounds to function prototypes
Add explicit array bounds to the function prototypes for the parameters that didn't already get handled by the conversion to use chacha_state: - chacha_block_*(): Change 'u8 *out' or 'u8 *stream' to u8 out[CHACHA_BLOCK_SIZE]. - hchacha_block_*(): Change 'u32 *out' or 'u32 *stream' to u32 out[HCHACHA_OUT_WORDS]. - chacha_init(): Change 'const u32 *key' to 'const u32 key[CHACHA_KEY_WORDS]'. Change 'const u8 *iv' to 'const u8 iv[CHACHA_IV_SIZE]'. No functional changes. This just makes it clear when fixed-size arrays are expected. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Eric Biggers
|
607c92141c |
crypto: lib/chacha - add strongly-typed state zeroization
Now that the ChaCha state matrix is strongly-typed, add a helper function chacha_zeroize_state() which zeroizes it. Then convert all applicable callers to use it instead of direct memzero_explicit. No functional changes. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Eric Biggers
|
32c9541189 |
crypto: lib/chacha - use struct assignment to copy state
Use struct assignment instead of memcpy() in lib/crypto/chacha.c where appropriate. No functional change. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Eric Biggers
|
98066f2f89 |
crypto: lib/chacha - strongly type the ChaCha state
The ChaCha state matrix is 16 32-bit words. Currently it is represented
in the code as a raw u32 array, or even just a pointer to u32. This
weak typing is error-prone. Instead, introduce struct chacha_state:
struct chacha_state {
u32 x[16];
};
Convert all ChaCha and HChaCha functions to use struct chacha_state.
No functional changes.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
|
||
|
Dr. David Alan Gilbert
|
479d26ee01 |
lib/oid_registry.c: remove unused sprint_OID
sprint_OID() was added as part of 2012's commit
|
||
|
Herton R. Krzesinski
|
92f3c5a005 |
lib/test_kmod: do not hardcode/depend on any filesystem
Right now test_kmod has hardcoded dependencies on btrfs/xfs. That is not optimal since you end up needing to select/build them, but it is not really required since other fs could be selected for the testing. Also, we can't change the default/driver module used for testing on initialization. Thus make it more generic: introduce two module parameters (start_driver and start_test_fs), which allow to select which modules/fs to use for the testing on test_kmod initialization. Then it's up to the user to select which modules/fs to use for testing based on his config. However, keep test_module as required default. This way, config/modules becomes selectable as when the testing is done from selftests (userspace). While at it, also change trigger_config_run_type, since at module initialization we already set the defaults at __kmod_config_init and should not need to do it again in test_kmod_init(), thus we can avoid to again set test_driver/test_fs. Link: https://lkml.kernel.org/r/20250418165047.702487-1-herton@redhat.com Signed-off-by: Herton R. Krzesinski <herton@redhat.com> Reviewed-by: Luis Chambelrain <mcgrof@kernel.org> Cc: Daniel Gomez <da.gomez@samsung.com> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Petr Pavlu <petr.pavlu@suse.com> Cc: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Caleb Sander Mateos
|
8d1d4b538b |
scatterlist: inline sg_next()
sg_next() is a short function called frequently in I/O paths. Define it in the header file so it can be inlined into its callers. Link: https://lkml.kernel.org/r/20250416160615.3571958-1-csander@purestorage.com Signed-off-by: Caleb Sander Mateos <csander@purestorage.com> Cc: Eric Biggers <ebiggers@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Zijun Hu
|
3eff6a3e57 |
errseq: eliminate special limitation for macro MAX_ERRNO
Current errseq implementation depends on a very special precondition that macro MAX_ERRNO must be (2^n - 1). Eliminate the limitation by - redefining macro ERRSEQ_SHIFT - defining a new macro ERRNO_MASK instead of MAX_ERRNO for errno mask. There is no plan to change the value of MAX_ERRNO, but this makes the implementation more generic and eliminates the BUILD_BUG_ON(). Link: https://lkml.kernel.org/r/20250407-improve_errseq-v1-1-7b27cbeb8298@quicinc.com Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Mario Limonciello
|
ae5b350085 |
kstrtox: add support for enabled and disabled in kstrtobool()
In some places in the kernel there is a design pattern for sysfs attributes to use kstrtobool() in store() and str_enabled_disabled() in show(). This is counterintuitive to interact with because kstrtobool() takes on/off but str_enabled_disabled() shows enabled/disabled. Some of those sysfs uses could switch to str_on_off() but for some attributes enabled/disabled really makes more sense. Add support for kstrtobool() to accept enabled/disabled. Link: https://lkml.kernel.org/r/20250321022538.1532445-1-superm1@kernel.org Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Chisheng Chen
|
3dfd79cc87 |
lib/rbtree.c: fix the example typo
Replace `sr` with `Sr`. The condition `!tmp1 || rb_is_black(tmp1)` ensures that `tmp1` (which is `sibling->rb_right`) is either NULL or a black node. Therefore, the right child of the sibling must be black, and the example should use `Sr` instead of `sr`. Link: https://lkml.kernel.org/r/20250403112614.570140-1-johnny1001s000602@gmail.com Signed-off-by: Chisheng Chen <johnny1001s000602@gmail.com> Cc: Hsin Chang Yu <zxcvb600870024@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Uladzislau Rezki (Sony)
|
2d76e79315 |
lib/test_vmalloc.c: allow built-in execution
Remove the dependency on module loading ("m") for the vmalloc test suite,
enabling it to be built directly into the kernel, so both ("=m") and
("=y") are supported.
Motivation:
- Faster debugging/testing of vmalloc code;
- It allows to configure the test via kernel-boot parameters.
Configuration example:
test_vmalloc.nr_threads=64
test_vmalloc.run_test_mask=7
test_vmalloc.sequential_test_order=1
Link: https://lkml.kernel.org/r/20250417161216.88318-2-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Baoquan He <bhe@redhat.com>
Reviewed-by: Adrian Huang <ahuang12@lenovo.com>
Tested-by: Adrian Huang <ahuang12@lenovo.com>
Cc: Christop Hellwig <hch@infradead.org>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Uladzislau Rezki (Sony)
|
7a73348e5d |
lib/test_vmalloc.c: replace RWSEM to SRCU for setup
The test has the initialization step during which threads are created. To prevent the workers from starting prematurely a write lock was previously used by the main setup thread, while each worker would block on a read lock. Replace this RWSEM based synchronization with a simpler SRCU based approach. Which does two basic steps: - Main thread wraps the setup phase in an SRCU read-side critical section. Pair of srcu_read_lock()/srcu_read_unlock(). - Each worker calls synchronize_srcu() on entry, ensuring it waits for the initialization phase to be completed. This patch eliminates the need for down_read()/up_read() and down_write()/up_write() pairs thus simplifying the logic and improving clarity. [urezki@gmail.com: fix compile error with CONFIG_TINY_RCU] Link: https://lkml.kernel.org/r/20250420142029.103169-1-urezki@gmail.com Link: https://lkml.kernel.org/r/20250417161216.88318-1-urezki@gmail.com Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Reviewed-by: Adrian Huang <ahuang12@lenovo.com> Tested-by: Adrian Huang <ahuang12@lenovo.com> Cc: Baoquan He <bhe@redhat.com> Cc: Christop Hellwig <hch@infradead.org> Cc: Mateusz Guzik <mjguzik@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Sidhartha Kumar
|
2a6ed1b411 |
maple_tree: reorder mas->store_type case statements
Move the unlikely case that mas->store_type is invalid to be the last evaluated case and put liklier cases higher up. Link: https://lkml.kernel.org/r/20250410191446.2474640-7-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Suggested-by: Liam R. Howlett <liam.howlett@oracle.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sidhartha Kumar
|
271152a973 |
maple_tree: add sufficient height
In order to support rebalancing and spanning stores using less than the worst case number of nodes, we need to track more than just the vacant height. Using only vacant height to reduce the worst case maple node allocation count can lead to a shortcoming of nodes in the following scenarios. For rebalancing writes, when a leaf node becomes insufficient, it may be combined with a sibling into a single node. This means that the parent node which has entries for this children will lose one entry. If this parent node was just meeting the minimum entries, losing one entry will now cause this parent node to be insufficient. This leads to a cascading operation of rebalancing at different levels and can lead to more node allocations than simply using vacant height can return. For spanning writes, a similar situation occurs. At the location at which a spanning write is detected, the number of ancestor nodes may similarly need to rebalanced into a smaller number of nodes and the same cascading situation could occur. To use less than the full height of the tree for the number of allocations, we also need to track the height at which a non-leaf node cannot become insufficient. This means even if a rebalance occurs to a child of this node, it currently has enough entries that it can lose one without any further action. This field is stored in the maple write state as sufficient height. In mas_prealloc_calc() when figuring out how many nodes to allocate, we check if the vacant node is lower in the tree than a sufficient node (has a larger value). If it is, we cannot use the vacant height and must use the difference in the height and sufficient height as the basis for the number of nodes needed. An off by one bug was also discovered in mast_overflow() where it is using >= rather than >. This caused extra iterations of the mas_spanning_rebalance() loop and lead to unneeded allocations. A test is also added to check the number of allocations is correct. Link: https://lkml.kernel.org/r/20250410191446.2474640-6-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: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Sidhartha Kumar
|
300a5b4ffe |
maple_tree: break on convergence in mas_spanning_rebalance()
This allows support for using the vacant height to calculate the worst case number of nodes needed for wr_rebalance operation. mas_spanning_rebalance() was seen to perform unnecessary node allocations. We can reduce allocations by breaking early during the rebalancing loop once we realize that we have ascended to a common ancestor. Link: https://lkml.kernel.org/r/20250410191446.2474640-5-sidhartha.kumar@oracle.com Signed-off-by: Sidhartha Kumar <sidhartha.kumar@oracle.com> Suggested-by: Liam Howlett <liam.howlett@oracle.com> Reviewed-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Sidhartha Kumar
|
ad88fc17d2 |
maple_tree: use vacant nodes to reduce worst case allocations
In order to determine the store type for a maple tree operation, a walk of the tree is done through mas_wr_walk(). This function descends the tree until a spanning write is detected or we reach a leaf node. While descending, keep track of the height at which we encounter a node with available space. This is done by checking if mas->end is less than the number of slots a given node type can fit. Now that the height of the vacant node is tracked, we can use the difference between the height of the tree and the height of the vacant node to know how many levels we will have to propagate creating new nodes. Update mas_prealloc_calc() to consider the vacant height and reduce the number of worst-case allocations. Rebalancing and spanning stores are not supported and fall back to using the full height of the tree for allocations. Update preallocation testing assertions to take into account vacant height. Link: https://lkml.kernel.org/r/20250410191446.2474640-4-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: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Sidhartha Kumar
|
f9d3a963fe |
maple_tree: use height and depth consistently
For the maple tree, the root node is defined to have a depth of 0 with a height of 1. Each level down from the node, these values are incremented by 1. Various code paths define a root with depth 1 which is inconsisent with the definition. Modify the code to be consistent with this definition. In mas_spanning_rebalance(), l_mas.depth was being used to track the height based on the number of iterations done in the main loop. This information was then used in mas_put_in_tree() to set the height. Rather than overload the l_mas.depth field to track height, simply keep track of height in the local variable new_height and directly pass this to mas_wmb_replace() which will be passed into mas_put_in_tree(). This allows up to remove writes to l_mas.depth. Link: https://lkml.kernel.org/r/20250410191446.2474640-3-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: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Sidhartha Kumar
|
28092a652f |
maple_tree: convert mas_prealloc_calc() to take in a maple write state
Patch series "Track node vacancy to reduce worst case allocation counts", v5. ================ overview ======================== Currently, the maple tree preallocates the worst case number of nodes for given store type by taking into account the whole height of the tree. This comes from a worst case scenario of every node in the tree being full and having to propagate node allocation upwards until we reach the root of the tree. This can be optimized if there are vacancies in nodes that are at a lower depth than the root node. This series implements tracking the level at which there is a vacant node so we only need to allocate until this level is reached, rather than always using the full height of the tree. The ma_wr_state struct is modified to add a field which keeps track of the vacant height and is updated during walks of the tree. This value is then read in mas_prealloc_calc() when we decide how many nodes to allocate. For rebalancing and spanning stores, we also need to track the lowest height at which a node has 1 more entry than the minimum sufficient number of entries. This is because rebalancing can cause a parent node to become insufficient which results in further node allocations. In this case, we need to use the sufficient height as the worst case rather than the vacant height. patch 1-2: preparatory patches patch 3: implement vacant height tracking + update the tests patch 4: support vacant height tracking for rebalancing writes patch 5: implement sufficient height tracking patch 6: reorder switch case statements ================ results ========================= Bpftrace was used to profile the allocation path for requesting new maple nodes while running stress-ng mmap 120s. The histograms below represent requests to kmem_cache_alloc_bulk() and show the count argument. This represnts how many maple nodes the caller is requesting in kmem_cache_alloc_bulk() command: stress-ng --mmap 4 --timeout 120 mm-unstable @bulk_alloc_req: [3, 4) 4 | | [4, 5) 54170 |@ | [5, 6) 0 | | [6, 7) 893057 |@@@@@@@@@@@@@@@@@@@@ | [7, 8) 4 | | [8, 9) 2230287 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@| [9, 10) 55811 |@ | [10, 11) 77834 |@ | [11, 12) 0 | | [12, 13) 1368684 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ | [13, 14) 0 | | [14, 15) 0 | | [15, 16) 367197 |@@@@@@@@ | @maple_node_total: 46,630,160 @total_vmas: 46184591 mm-unstable + this series @bulk_alloc_req: [2, 3) 198 | | [3, 4) 4 | | [4, 5) 43 | | [5, 6) 0 | | [6, 7) 1069503 |@@@@@@@@@@@@@@@@@@@@@ | [7, 8) 4 | | [8, 9) 2597268 |@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@| [9, 10) 472191 |@@@@@@@@@ | [10, 11) 191904 |@@@ | [11, 12) 0 | | [12, 13) 247316 |@@@@ | [13, 14) 0 | | [14, 15) 0 | | [15, 16) 98769 |@ | @maple_node_total: 37,813,856 @total_vmas: 43493287 This represents a ~19% reduction in the number of bulk maple nodes allocated. For more reproducible results, a historgram of the return value of mas_prealloc_calc() is displayed while running the maple_tree_tests whcih have a deterministic store pattern mas_prealloc_calc() return value mm-unstable 1 : (12068) 3 : (11836) 5 : ***** (271192) 7 : ************************************************** (2329329) 9 : *********** (534186) 10 : (435) 11 : *************** (704306) 13 : ******** (409781) mas_prealloc_calc() return value mm-unstable + this series 1 : (12070) 3 : ************************************************** (3548777) 5 : ******** (633458) 7 : (65081) 9 : (11224) 10 : (341) 11 : (2973) 13 : (68) do_mmap latency was also measured for regressions: command: stress-ng --mmap 4 --timeout 120 mm-unstable: avg = 7162 nsecs, total: 16101821292 nsecs, count: 2248034 mm-unstable + this series: avg = 6689 nsecs, total: 15135391764 nsecs, count: 2262726 stress-ng --mmap4 --timeout 120 with vacant_height: stress-ng: info: [257] 21526312 Maple Tree Read 0.176 M/sec stress-ng: info: [257] 339979348 Maple Tree Write 2.774 M/sec without vacant_height: stress-ng: info: [8228] 20968900 Maple Tree Read 0.171 M/sec stress-ng: info: [8228] 312214648 Maple Tree Write 2.547 M/sec This represents an increase of ~3% read throughput and ~9% increase in write throughput. This patch (of 6): In a subsequent patch, mas_prealloc_calc() will need to access fields only in the ma_wr_state. Convert the function to take in a ma_wr_state and modify all callers. There is no functional change. Link: https://lkml.kernel.org/r/20250410191446.2474640-1-sidhartha.kumar@oracle.com Link: https://lkml.kernel.org/r/20250410191446.2474640-2-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 (Oracle) <willy@infradead.org> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Przemek Kitszel
|
4c97a17a25 |
xarray: make xa_alloc_cyclic() return 0 on all success cases
Change xa_alloc_cyclic() to return 0 even on wrap-around. Do the same for xa_alloc_cyclic_irq() and xa_alloc_cyclic_bh(). This will prevent any future bug of treating return of 1 as an error: int ret = xa_alloc_cyclic(...) if (ret) // currently mishandles ret==1 goto failure; If there will be someone interested in when wrap-around occurs, there is still __xa_alloc_cyclic() that behaves as before. For now there is no such user. Link: https://lkml.kernel.org/r/20250320102219.8101-1-przemyslaw.kitszel@intel.com Signed-off-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Suggested-by: Matthew Wilcox <willy@infradead.org> Link: https://lore.kernel.org/netdev/Z9gUd-5t8b5NX2wE@casper.infradead.org Cc: Andriy Shevchenko <andriy.shevchenko@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Cc: Przemek Kitszel <przemyslaw.kitszel@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Matthew Wilcox (Oracle)
|
70d1be00b4 |
iov_iter: convert iov_iter_extract_xarray_pages() to use folios
ITER_XARRAY is exclusively used with xarrays that contain folios, not pages, so extract folio pointers from it, not page pointers. Removes a use of find_subpage(). Link: https://lkml.kernel.org/r/20250402210612.2444135-5-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Matthew Wilcox (Oracle)
|
b57f4f4f18 |
iov_iter: convert iter_xarray_populate_pages() to use folios
ITER_XARRAY is exclusively used with xarrays that contain folios, not pages, so extract folio pointers from it, not page pointers. Removes a hidden call to compound_head() and a use of find_subpage(). Link: https://lkml.kernel.org/r/20250402210612.2444135-4-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Paul E. McKenney
|
ba575cea29 |
ratelimit: Drop redundant accesses to burst
Now that there is the "burst <= 0" fastpath, for all later code, burst must be strictly greater than zero. Therefore, drop the redundant checks of this local variable. Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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|
Paul E. McKenney
|
4b2cce999c |
ratelimit: Use nolock_ret restructuring to collapse common case code
Now that unlock_ret releases the lock, then falls into nolock_ret, which handles ->missed based on the value of ret, the common-case lock-held code can be collapsed into a single "if" statement with a single-statement "then" clause. Yes, we could go further and just assign the "if" condition to ret, but in the immortal words of MSDOS, "Are you sure?". Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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Paul E. McKenney
|
743a1942d5 |
ratelimit: Use nolock_ret label to collapse lock-failure code
Now that we have a nolock_ret label that handles ->missed correctly based on the value of ret, we can eliminate a local variable and collapse several "if" statements on the lock-acquisition-failure code path. Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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Paul E. McKenney
|
a69114c2a1 |
ratelimit: Use nolock_ret label to save a couple of lines of code
Create a nolock_ret label in order to start consolidating the unlocked return paths that conditionally invoke ratelimit_state_inc_miss(). Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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Paul E. McKenney
|
f2d0ea0f08 |
ratelimit: Simplify common-case exit path
By making "ret" always be initialized, and moving the final call to ratelimit_state_inc_miss() out from under the lock, we save a goto and a couple lines of code. This also saves a couple of lines of code from the unconditional enable/disable slowpath. Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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Petr Mladek
|
a940d145cc |
ratelimit: Warn if ->interval or ->burst are negative
Currently, ___ratelimit() treats a negative ->interval or ->burst as if it was zero, but this is an accident of the current implementation. Therefore, splat in this case, which might have the benefit of detecting use of uninitialized ratelimit_state structures on the one hand or easing addition of new features on the other. Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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Paul E. McKenney
|
96d366048f |
ratelimit: Avoid atomic decrement under lock if already rate-limited
Currently, if the lock is acquired, the code unconditionally does an atomic decrement on ->rs_n_left, even if that atomic operation is guaranteed to return a limit-rate verdict. A limit-rate verdict will in fact be the common case when something is spewing into a rate limit. This unconditional atomic operation incurs needless overhead and also raises the spectre of counter wrap. Therefore, do the atomic decrement only if there is some chance that rates won't be limited. Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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Paul E. McKenney
|
123a1d97b2 |
ratelimit: Avoid atomic decrement if already rate-limited
Currently, if the lock could not be acquired, the code unconditionally does an atomic decrement on ->rs_n_left, even if that atomic operation is guaranteed to return a limit-rate verdict. This incurs needless overhead and also raises the spectre of counter wrap. Therefore, do the atomic decrement only if there is some chance that rates won't be limited. Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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Paul E. McKenney
|
21ac6e5eda |
ratelimit: Don't flush misses counter if RATELIMIT_MSG_ON_RELEASE
Restore the previous semantics where the misses counter is unchanged if the RATELIMIT_MSG_ON_RELEASE flag is set. Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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Paul E. McKenney
|
aa2cc356f8 |
ratelimit: Force re-initialization when rate-limiting re-enabled
Currently, if rate limiting is disabled, ___ratelimit() does an immediate early return with no state changes. This can result in false-positive drops when re-enabling rate limiting. Therefore, mark the ratelimit_state structure "uninitialized" when rate limiting is disabled. [ paulmck: Apply Petr Mladek feedback. ] Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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Paul E. McKenney
|
084a990ded |
ratelimit: Allow zero ->burst to disable ratelimiting
If ->interval is zero, then rate-limiting will be disabled. Alternatively, if interval is greater than zero and ->burst is zero, then rate-limiting will be applied unconditionally. The point of this distinction is to handle current users that pass zero-initialized ratelimit_state structures to ___ratelimit(), and in such cases the ->lock field will be uninitialized. Acquiring ->lock in this case is clearly not a strategy to win. Therefore, make this classification be lockless. Note that although negative ->interval and ->burst happen to be treated as if they were zero, this is an accident of the current implementation. The semantics of negative values for these fields is subject to change without notice. Especially given that Bert Karwatzki determined that no current calls to ___ratelimit() ever have negative values for these fields. This commit replaces an earlier buggy versions. Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Reported-by: Bert Karwatzki <spasswolf@web.de> Reported-by: "Aithal, Srikanth" <sraithal@amd.com> Closes: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Reported-by: Mark Brown <broonie@kernel.org> Closes: https://lore.kernel.org/all/257c3b91-e30f-48be-9788-d27a4445a416@sirena.org.uk/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Tested-by: "Aithal, Srikanth" <sraithal@amd.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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Petr Mladek
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cf8cfa8a99 |
ratelimit: Reduce ___ratelimit() false-positive rate limiting
Retain the locked design, but check rate-limiting even when the lock could not be acquired. Link: https://lore.kernel.org/all/Z_VRo63o2UsVoxLG@pathway.suse.cz/ Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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Paul E. McKenney
|
e64a348dc1 |
ratelimit: Avoid jiffies=0 special case
The ___ratelimit() function special-cases the jiffies-counter value of zero as "uninitialized". This works well on 64-bit systems, where the jiffies counter is not going to return to zero for more than half a billion years on systems with HZ=1000, but similar 32-bit systems take less than 50 days to wrap the jiffies counter. And although the consequences of wrapping the jiffies counter seem to be limited to minor confusion on the duration of the rate-limiting interval that happens to end at time zero, it is almost no work to avoid this confusion. Therefore, introduce a RATELIMIT_INITIALIZED bit to the ratelimit_state structure's ->flags field so that a ->begin value of zero is no longer special. Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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Paul E. McKenney
|
d343732ddb |
ratelimit: Count misses due to lock contention
The ___ratelimit() function simply returns zero ("do ratelimiting")
if the trylock fails, but does not adjust the ->missed field. This
means that the resulting dropped printk()s are dropped silently, which
could seriously confuse people trying to do console-log-based debugging.
Therefore, increment the ->missed field upon trylock failure.
Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/
Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Kuniyuki Iwashima <kuniyu@amazon.com>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: John Ogness <john.ogness@linutronix.de>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
|
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Paul E. McKenney
|
78bf44de47 |
ratelimit: Convert the ->missed field to atomic_t
The ratelimit_state structure's ->missed field is sometimes incremented locklessly, and it would be good to avoid lost counts. This is also needed to count the number of misses due to trylock failure. Therefore, convert the ratelimit_state structure's ->missed field to atomic_t. Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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Paul E. McKenney
|
56a7b9f8b0 |
ratelimit: Create functions to handle ratelimit_state internals
A number of ratelimit use cases do open-coded access to the ratelimit_state structure's ->missed field. This works, but is a bit messy and makes it more annoying to make changes to this field. Therefore, provide a ratelimit_state_inc_miss() function that increments the ->missed field, a ratelimit_state_get_miss() function that reads out the ->missed field, and a ratelimit_state_reset_miss() function that reads out that field, but that also resets its value to zero. These functions will replace client-code open-coded uses of ->missed. In addition, a new ratelimit_state_reset_interval() function encapsulates what was previously open-coded lock acquisition and direct field updates. [ paulmck: Apply kernel test robot feedback. ] Link: https://lore.kernel.org/all/fbe93a52-365e-47fe-93a4-44a44547d601@paulmck-laptop/ Link: https://lore.kernel.org/all/20250423115409.3425-1-spasswolf@web.de/ Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Kuniyuki Iwashima <kuniyu@amazon.com> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: John Ogness <john.ogness@linutronix.de> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> |
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Kees Cook
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f55aef7e0c |
lib/tests: randstruct: Add deep function pointer layout test
The recent fix in commit c2ea09b193d2 ("randstruct: gcc-plugin: Remove
bogus void member") has fixed another issue: it was not always detecting
composite structures made only of function pointers and structures of
function pointers. Add a test for this case, and break out the layout
tests since this issue is actually a problem for Clang as well[1].
Link: https://github.com/llvm/llvm-project/issues/138355 [1]
Link: https://lore.kernel.org/r/20250502224116.work.591-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
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Kees Cook
|
b370f7eacd |
lib/tests: Add randstruct KUnit test
Perform basic validation about layout randomization and initialization tracking when using CONFIG_RANDSTRUCT=y. Tested using: $ ./tools/testing/kunit/kunit.py run \ --kconfig_add CONFIG_RANDSTRUCT_FULL=y \ randstruct [17:22:30] ================= randstruct (2 subtests) ================== [17:22:30] [PASSED] randstruct_layout [17:22:30] [PASSED] randstruct_initializers [17:22:30] =================== [PASSED] randstruct ==================== [17:22:30] ============================================================ [17:22:30] Testing complete. Ran 2 tests: passed: 2 [17:22:30] Elapsed time: 5.091s total, 0.001s configuring, 4.974s building, 0.086s running Adding "--make_option LLVM=1" can be used to test Clang, which also passes. Acked-by: David Gow <davidgow@google.com> Signed-off-by: Kees Cook <kees@kernel.org> |
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Kees Cook
|
5e88c48cb4 |
kbuild: Switch from -Wvla to -Wvla-larger-than=1
Variable Length Arrays (VLAs) on the stack must not be used in the kernel.
Function parameter VLAs[1] should be usable, but -Wvla will warn for
those. For example, this will produce a warning but it is not using a
stack VLA:
int something(size_t n, int array[n]) { ...
Clang has no way yet to distinguish between the VLA types[2], so
depend on GCC for now to keep stack VLAs out of the tree by using GCC's
-Wvla-larger-than=N option (though GCC may split -Wvla similarly[3] to
how Clang is planning to).
While GCC 8+ supports -Wvla-larger-than, only 9+ supports ...=0[4],
so use -Wvla-larger-than=1. Adjust mm/kasan/Makefile to remove it from
CFLAGS (GCC <9 appears unable to disable the warning correctly[5]).
The VLA usage in lib/test_ubsan.c was removed in commit
|
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Gustavo A. R. Silva
|
6e6500e4e4 |
kunit/overflow: Add tests for STACK_FLEX_ARRAY_SIZE() helper
Add a couple of tests for new STACK_FLEX_ARRAY_SIZE() helper. Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/c127631a03cdd7f59bfa091b9666a93bf69d0322.1745355442.git.gustavoars@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
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Mostafa Saleh
|
61b38f7591 |
KVM: arm64: Introduce CONFIG_UBSAN_KVM_EL2
Add a new Kconfig CONFIG_UBSAN_KVM_EL2 for KVM which enables UBSAN for EL2 code (in protected/nvhe/hvhe) modes. This will re-use the same checks enabled for the kernel for the hypervisor. The only difference is that for EL2 it always emits a "brk" instead of implementing hooks as the hypervisor can't print reports. The KVM code will re-use the same code for the kernel "report_ubsan_failure()" so #ifdefs are changed to also have this code for CONFIG_UBSAN_KVM_EL2 Signed-off-by: Mostafa Saleh <smostafa@google.com> Reviewed-by: Kees Cook <kees@kernel.org> Link: https://lore.kernel.org/r/20250430162713.1997569-4-smostafa@google.com Signed-off-by: Marc Zyngier <maz@kernel.org> |
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Mostafa Saleh
|
d683a85618 |
ubsan: Remove regs from report_ubsan_failure()
report_ubsan_failure() doesn't use argument regs, and soon it will be called from the hypervisor context were regs are not available. So, remove the unused argument. Signed-off-by: Mostafa Saleh <smostafa@google.com> Acked-by: Kees Cook <kees@kernel.org> Link: https://lore.kernel.org/r/20250430162713.1997569-3-smostafa@google.com Signed-off-by: Marc Zyngier <maz@kernel.org> |
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Herbert Xu
|
9b9d4ef0cf |
crypto: lib/poly1305 - Build main library on LIB_POLY1305 and split generic code out
Split the lib poly1305 code just as was done with sha256. Make
the main library code conditional on LIB_POLY1305 instead of
LIB_POLY1305_GENERIC.
Reported-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Fixes:
|
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Thomas Zimmermann
|
6a5ca33b88 |
Merge drm/drm-next into drm-misc-next
Backmerging drm-next to get fixes from v6.15-rc5. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> |
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Dave Airlie
|
5e0c679981 |
Linux 6.15-rc5
-----BEGIN PGP SIGNATURE----- iQFSBAABCgA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmgX1CgeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGxiIH/A7LHlVatGEQgRFi 0JALDgcuGTMtMU1qD43rv8Z1GXqTpCAlaBt9D1C9cUH/86MGyBTVRWgVy0wkaU2U 8QSfFWQIbrdaIzelHtzmAv5IDtb+KrcX1iYGLcMb6ZYaWkv8/CMzMX1nkgxEr1QT 37Xo3/F17yJumAdNQxdRhVLGy2d3X5rScecpufwh97sMwoddllMCDs2LIoeSAYpG 376/wzni09G2fADa8MEKqcaMue4qcf0FOo/gOkT8YwFGSZLKa6uumlBLg04QoCt0 foK2vfcci1q4H4ZbCu3uQESYGLQHY0f2ICDCwC3m25VF9a81TmlbC3MLum3vhmKe RtLDcXg= =xyaI -----END PGP SIGNATURE----- BackMerge tag 'v6.15-rc5' into drm-next Linux 6.15-rc5, requested by tzimmerman for fixes required in drm-next. Signed-off-by: Dave Airlie <airlied@redhat.com> |
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Rob Herring (Arm)
|
1b765f8bda |
devres: Export devm_ioremap_resource_wc()
devm_ioremap_resource_wc() is not exported, so add one. Link: https://lore.kernel.org/r/20250423-dt-memory-region-v2-v2-3-2fbd6ebd3c88@kernel.org Acked-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> Signed-off-by: Rob Herring (Arm) <robh@kernel.org> |
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Herbert Xu
|
3007e90572 |
crypto: lib/sha256 - Use generic block helper
Use the BLOCK_HASH_UPDATE_BLOCKS helper instead of duplicating partial block handling. Also remove the unused lib/sha256 force-generic interface. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Herbert Xu
|
5b90a779bc |
crypto: lib/sha256 - Add helpers for block-based shash
Add an internal sha256_finup helper and move the finalisation code from __sha256_final into it. Also add sha256_choose_blocks and CRYPTO_ARCH_HAVE_LIB_SHA256_SIMD so that the Crypto API can use the SIMD block function unconditionally. The Crypto API must not be used in hard IRQs and there is no reason to have a fallback path for hardirqs. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Eric Biggers
|
7350fef56b |
crypto: lib/sha256 - improve function prototypes
Follow best practices by changing the length parameters to size_t and explicitly specifying the length of the output digest arrays. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Eric Biggers
|
699618d422 |
crypto: sparc/sha256 - implement library instead of shash
Instead of providing crypto_shash algorithms for the arch-optimized SHA-256 code, instead implement the SHA-256 library. This is much simpler, it makes the SHA-256 library functions be arch-optimized, and it fixes the longstanding issue where the arch-optimized SHA-256 was disabled by default. SHA-256 still remains available through crypto_shash, but individual architectures no longer need to handle it. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Eric Biggers
|
950e5c8411 |
crypto: sha256 - support arch-optimized lib and expose through shash
As has been done for various other algorithms, rework the design of the SHA-256 library to support arch-optimized implementations, and make crypto/sha256.c expose both generic and arch-optimized shash algorithms that wrap the library functions. This allows users of the SHA-256 library functions to take advantage of the arch-optimized code, and this makes it much simpler to integrate SHA-256 for each architecture. Note that sha256_base.h is not used in the new design. It will be removed once all the architecture-specific code has been updated. Move the generic block function into its own module to avoid a circular dependency from libsha256.ko => sha256-$ARCH.ko => libsha256.ko. Signed-off-by: Eric Biggers <ebiggers@google.com> Add export and import functions to maintain existing export format. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Herbert Xu
|
10a6d72ea3 |
crypto: lib/poly1305 - Use block-only interface
Now that every architecture provides a block function, use that to implement the lib/poly1305 and remove the old per-arch code. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Herbert Xu
|
9b84cb8978 |
crypto: lib/poly1305 - Add block-only interface
Add a block-only interface for poly1305. Implement the generic code first. Also use the generic partial block helper. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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|
Herbert Xu
|
fba4aafaba |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux v6.15-rc5
Merge mainline to pick up bcachefs poly1305 patch
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Mark Brown
|
c788129c85
|
ASoC: codec: twl4030: Convert to GPIO descriptors
Merge series from "Peng Fan (OSS)" <peng.fan@oss.nxp.com>: This is separated from [1]. With an update that sorting the headers in a separate patch. No other changes, so I still keep Linus' R-b for Patch 2. [1] https://lore.kernel.org/all/20250408-asoc-gpio-v1-3-c0db9d3fd6e9@nxp.com/ |
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Arnd Bergmann
|
852faf8055 |
gcc-plugins: remove SANCOV gcc plugin
With the minimum gcc version raised to 8.1, all supported compilers now understand the -fsanitize-coverage=trace-pc option, and there is no longer a need for the separate compiler plugin. Since only gcc-5 was able to use the plugin for several year now, it was already likely unused. Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
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Arnd Bergmann
|
8530ea3c9b |
Kbuild: remove structleak gcc plugin
gcc-12 and higher support the -ftrivial-auto-var-init= flag, after gcc-8 is the minimum version, this is half of the supported ones, and the vast majority of the versions that users are actually likely to have, so it seems like a good time to stop having the fallback plugin implementation Older toolchains are still able to build kernels normally without this plugin, but won't be able to use variable initialization.. Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
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Arnd Bergmann
|
5f5305dea0 |
raid6: skip avx512 checks
It is no longer necessary to check for CONFIG_AS_AVX512, since the minimum assembler version is now from binutils-2.30 and this always supports it. Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
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Arnd Bergmann
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118c40b7b5 |
kbuild: require gcc-8 and binutils-2.30
Commit
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Vincent Mailhol
|
e289b48825 |
test_bits: add tests for BIT_U*()
Add some additional tests in lib/tests/test_bits.c to cover the expected results of the fixed type BIT_U*() macros. Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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Lucas De Marchi
|
0405eef6c3 |
test_bits: add tests for GENMASK_U*()
Add some additional tests in lib/tests/test_bits.c to cover the expected/non-expected values of the fixed-type GENMASK_U*() macros. Also check that the result value matches the expected type. Since those are known at build time, use static_assert() instead of normal kunit tests. Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com> Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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Kees Cook
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c2493384e8 |
kunit: executor: Remove const from kunit_filter_suites() allocation type
In preparation for making the kmalloc family of allocators type aware, we need to make sure that the returned type from the allocation matches the type of the variable being assigned. (Before, the allocator would always return "void *", which can be implicitly cast to any pointer type.) The assigned type is "struct kunit_suite **" but the returned type will be "struct kunit_suite * const *". Since it isn't generally possible to remove the const qualifier, adjust the allocation type to match the assignment. Link: https://lore.kernel.org/r/20250426062433.work.124-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Petr Mladek
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37eed892cc |
vsprintf: Use %p4chR instead of %p4cn for reading data in reversed host ordering
The generic FourCC format always prints the data using the big endian order. It is generic because it allows to read the data using a custom ordering. The current code uses "n" for reading data in the reverse host ordering. It makes the 4 variants [hnbl] consistent with the generic printing of IPv4 addresses. Unfortunately, it creates confusion on big endian systems. For example, it shows the data &(u32)0x67503030 as %p4cn 00Pg (0x30305067) But people expect that the ordering stays the same. The network ordering is a big-endian ordering. The problem is that the semantic is not the same. The modifiers affect the output ordering of IPv4 addresses while they affect the reading order in case of FourCC code. Avoid the confusion by replacing the "n" modifier with "hR", aka reverse host ordering. It is inspired by the existing %p[mM]R printf format. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Closes: https://lore.kernel.org/r/CAMuHMdV9tX=TG7E_CrSF=2PY206tXf+_yYRuacG48EWEtJLo-Q@mail.gmail.com Signed-off-by: Petr Mladek <pmladek@suse.com> Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Aditya Garg <gargaditya08@live.com> Link: https://lore.kernel.org/r/20250428123132.578771-1-pmladek@suse.com Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> |
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Thomas Weißschuh
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0d6efa20e3 |
kunit/usercopy: Disable u64 test on 32-bit SPARC
usercopy of 64 bit values does not work on 32-bit SPARC:
# usercopy_test_valid: EXPECTATION FAILED at lib/tests/usercopy_kunit.c:209
Expected val_u64 == 0x5a5b5c5d6a6b6c6d, but
val_u64 == 1515936861 (0x5a5b5c5d)
0x5a5b5c5d6a6b6c6d == 6510899242581322861 (0x5a5b5c5d6a6b6c6d)
Disable the test.
Fixes:
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Eric Biggers
|
af9ce62783 |
crypto: lib/poly1305 - remove INTERNAL symbol and selection of CRYPTO
Now that the architecture-optimized Poly1305 kconfig symbols are defined regardless of CRYPTO, there is no need for CRYPTO_LIB_POLY1305 to select CRYPTO. So, remove that. This makes the indirection through the CRYPTO_LIB_POLY1305_INTERNAL symbol unnecessary, so get rid of that and just use CRYPTO_LIB_POLY1305 directly. Finally, make the fallback to the generic implementation use a default value instead of a select; this makes it consistent with how the arch-optimized code gets enabled and also with how CRYPTO_LIB_BLAKE2S_GENERIC gets enabled. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Eric Biggers
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879f47548b |
crypto: lib/chacha - remove INTERNAL symbol and selection of CRYPTO
Now that the architecture-optimized ChaCha kconfig symbols are defined regardless of CRYPTO, there is no need for CRYPTO_LIB_CHACHA to select CRYPTO. So, remove that. This makes the indirection through the CRYPTO_LIB_CHACHA_INTERNAL symbol unnecessary, so get rid of that and just use CRYPTO_LIB_CHACHA directly. Finally, make the fallback to the generic implementation use a default value instead of a select; this makes it consistent with how the arch-optimized code gets enabled and also with how CRYPTO_LIB_BLAKE2S_GENERIC gets enabled. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Eric Biggers
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c7c18c94a6 |
crypto: x86 - move library functions to arch/x86/lib/crypto/
Continue disentangling the crypto library functions from the generic crypto infrastructure by moving the x86 BLAKE2s, ChaCha, and Poly1305 library functions into a new directory arch/x86/lib/crypto/ that does not depend on CRYPTO. This mirrors the distinction between crypto/ and lib/crypto/. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Eric Biggers
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3ea91323fe |
crypto: s390 - move library functions to arch/s390/lib/crypto/
Continue disentangling the crypto library functions from the generic crypto infrastructure by moving the s390 ChaCha library functions into a new directory arch/s390/lib/crypto/ that does not depend on CRYPTO. This mirrors the distinction between crypto/ and lib/crypto/. Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Eric Biggers
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d604877c2f |
crypto: riscv - move library functions to arch/riscv/lib/crypto/
Continue disentangling the crypto library functions from the generic crypto infrastructure by moving the riscv ChaCha library functions into a new directory arch/riscv/lib/crypto/ that does not depend on CRYPTO. This mirrors the distinction between crypto/ and lib/crypto/. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Eric Biggers
|
f9f86c03ef |
crypto: powerpc - move library functions to arch/powerpc/lib/crypto/
Continue disentangling the crypto library functions from the generic crypto infrastructure by moving the powerpc ChaCha and Poly1305 library functions into a new directory arch/powerpc/lib/crypto/ that does not depend on CRYPTO. This mirrors the distinction between crypto/ and lib/crypto/. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Eric Biggers
|
939a54ac07 |
crypto: mips - move library functions to arch/mips/lib/crypto/
Continue disentangling the crypto library functions from the generic crypto infrastructure by moving the mips ChaCha and Poly1305 library functions into a new directory arch/mips/lib/crypto/ that does not depend on CRYPTO. This mirrors the distinction between crypto/ and lib/crypto/. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Eric Biggers
|
cc16e228a2 |
crypto: arm64 - move library functions to arch/arm64/lib/crypto/
Continue disentangling the crypto library functions from the generic crypto infrastructure by moving the arm64 ChaCha and Poly1305 library functions into a new directory arch/arm64/lib/crypto/ that does not depend on CRYPTO. This mirrors the distinction between crypto/ and lib/crypto/. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Eric Biggers
|
714656a846 |
crypto: arm - move library functions to arch/arm/lib/crypto/
Continue disentangling the crypto library functions from the generic crypto infrastructure by moving the arm BLAKE2s, ChaCha, and Poly1305 library functions into a new directory arch/arm/lib/crypto/ that does not depend on CRYPTO. This mirrors the distinction between crypto/ and lib/crypto/. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Herbert Xu
|
9939049085 |
crypto: lib/sm3 - Remove partial block helpers
Now that all sm3_base users have been converted to use the API partial block handling, remove the partial block helpers as well as the lib/crypto functions. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Herbert Xu
|
8ba81fef40 |
crypto: sha256_base - Remove partial block helpers
Now that all sha256_base users have been converted to use the API partial block handling, remove the partial block helpers. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Herbert Xu
|
e6c5597bad |
crypto: riscv/sha256 - Use API partial block handling
Use the Crypto API partial block handling. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Aditya Garg
|
403ff8fd2d |
printf: add tests for generic FourCCs
This patch adds support for kunit tests of generic 32-bit FourCCs added to vsprintf. Acked-by: Tamir Duberstein <tamird@gmail.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Tested-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Aditya Garg <gargaditya08@live.com> Reviewed-by: Kees Cook <kees@kernel.org> Link: https://lore.kernel.org/r/PN3PR01MB95973AF4F6262B2D1996FB25B8B52@PN3PR01MB9597.INDPRD01.PROD.OUTLOOK.COM Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> |
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Hector Martin
|
1938479b27 |
lib/vsprintf: Add support for generic FourCCs by extending %p4cc
%p4cc is designed for DRM/V4L2 FourCCs with their specific quirks, but it's useful to be able to print generic 4-character codes formatted as an integer. Extend it to add format specifiers for printing generic 32-bit FourCCs with various endian semantics: %p4ch Host byte order %p4cn Network byte order %p4cl Little-endian %p4cb Big-endian The endianness determines how bytes are interpreted as a u32, and the FourCC is then always printed MSByte-first (this is the opposite of V4L/DRM FourCCs). This covers most practical cases, e.g. %p4cn would allow printing LSByte-first FourCCs stored in host endian order (other than the hex form being in character order, not the integer value). Acked-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Tested-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Hector Martin <marcan@marcan.st> Signed-off-by: Aditya Garg <gargaditya08@live.com> Reviewed-by: Kees Cook <kees@kernel.org> Link: https://lore.kernel.org/r/PN3PR01MB9597B01823415CB7FCD3BC27B8B52@PN3PR01MB9597.INDPRD01.PROD.OUTLOOK.COM Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> |
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|
Linus Torvalds
|
3bf8a4598f |
hardening fixes for v6.15-rc3
- lib/prime_numbers: KUnit test should not select PRIME_NUMBERS (Geert Uytterhoeven) - ubsan: Fix panic from test_ubsan_out_of_bounds (Mostafa Saleh) - ubsan: Remove 'default UBSAN' from UBSAN_INTEGER_WRAP (Nathan Chancellor) - string: Add load_unaligned_zeropad() code path to sized_strscpy() (Peter Collingbourne) - kasan: Add strscpy() test to trigger tag fault on arm64 (Vincenzo Frascino) - Disable GCC randstruct for COMPILE_TEST -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRSPkdeREjth1dHnSE2KwveOeQkuwUCaAKv9QAKCRA2KwveOeQk u160AP90D0BTkrwYIt1oRMOlN0LX0oipfFDiOKrxuZpgfwqYgwD/XHlTCglva+Kl 1Y0T/wUpA4tL8XoKtcs/kBzsWNyI6wU= =4ji5 -----END PGP SIGNATURE----- Merge tag 'hardening-v6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening fixes from Kees Cook: - lib/prime_numbers: KUnit test should not select PRIME_NUMBERS (Geert Uytterhoeven) - ubsan: Fix panic from test_ubsan_out_of_bounds (Mostafa Saleh) - ubsan: Remove 'default UBSAN' from UBSAN_INTEGER_WRAP (Nathan Chancellor) - string: Add load_unaligned_zeropad() code path to sized_strscpy() (Peter Collingbourne) - kasan: Add strscpy() test to trigger tag fault on arm64 (Vincenzo Frascino) - Disable GCC randstruct for COMPILE_TEST * tag 'hardening-v6.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: lib/prime_numbers: KUnit test should not select PRIME_NUMBERS ubsan: Fix panic from test_ubsan_out_of_bounds lib/Kconfig.ubsan: Remove 'default UBSAN' from UBSAN_INTEGER_WRAP hardening: Disable GCC randstruct for COMPILE_TEST kasan: Add strscpy() test to trigger tag fault on arm64 string: Add load_unaligned_zeropad() code path to sized_strscpy() |
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|
Linus Torvalds
|
cfb2e2c57a |
31 hotfixes. 9 are cc:stable and the remainder address post-6.15 issues
or aren't considered necessary for -stable kernels. 22 patches are for MM, 9 are otherwise. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaABuqgAKCRDdBJ7gKXxA jkZ7AQCkxrzIxZs7uUcHZNIGpNhbhg0Dl07j6txgf7piCBSk4wD+LX6skmC2CXLF QWDhw1+dKHY/Ha0TSQkXUlMTjAP1mA4= =3vRc -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2025-04-16-19-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc hotfixes from Andrew Morton: "31 hotfixes. 9 are cc:stable and the remainder address post-6.15 issues or aren't considered necessary for -stable kernels. 22 patches are for MM, 9 are otherwise" * tag 'mm-hotfixes-stable-2025-04-16-19-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (31 commits) MAINTAINERS: update HUGETLB reviewers mm: fix apply_to_existing_page_range() selftests/mm: fix compiler -Wmaybe-uninitialized warning alloc_tag: handle incomplete bulk allocations in vm_module_tags_populate mailmap: add entry for Jean-Michel Hautbois mm: (un)track_pfn_copy() fix + doc improvements mm: fix filemap_get_folios_contig returning batches of identical folios mm/hugetlb: add a line break at the end of the format string selftests: mincore: fix tmpfs mincore test failure mm/hugetlb: fix set_max_huge_pages() when there are surplus pages mm/cma: report base address of single range correctly mm: page_alloc: speed up fallbacks in rmqueue_bulk() kunit: slub: add module description mm/kasan: add module decription ucs2_string: add module description zlib: add module description fpga: tests: add module descriptions samples/livepatch: add module descriptions ASN.1: add module description mm/vma: add give_up_on_oom option on modify/merge, use in uffd release ... |
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Eric Biggers
|
5f7325fbb3 |
crypto: poly1305 - remove rset and sset fields of poly1305_desc_ctx
These fields are no longer needed, so remove them. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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|
Herbert Xu
|
cb16ba4695 |
crypto: lib/sm3 - Export generic block function
Export the generic block function so that it can be used by the Crypto API. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Herbert Xu
|
f4065b2f63 |
crypto: lib/sm3 - Move sm3 library into lib/crypto
Move the sm3 library code into lib/crypto. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Geert Uytterhoeven
|
3f2925174f |
lib/prime_numbers: KUnit test should not select PRIME_NUMBERS
Enabling a (modular) test should not silently enable additional kernel
functionality, as that may increase the attack vector of a product.
Fix this by making PRIME_NUMBERS_KUNIT_TEST depend on PRIME_NUMBERS
instead of selecting it.
After this, one can safely enable CONFIG_KUNIT_ALL_TESTS=m to build
modules for all appropriate tests for ones system, without pulling in
extra unwanted functionality, while still allowing a tester to manually
enable PRIME_NUMBERS and this test suite on a system where PRIME_NUMBERS
is not enabled by default. Resurrect CONFIG_PRIME_NUMBERS=m in
tools/testing/selftests/lib/config for the latter use case.
Fixes:
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Mostafa Saleh
|
9b044614be |
ubsan: Fix panic from test_ubsan_out_of_bounds
Running lib_ubsan.ko on arm64 (without CONFIG_UBSAN_TRAP) panics the kernel: [ 31.616546] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: test_ubsan_out_of_bounds+0x158/0x158 [test_ubsan] [ 31.646817] CPU: 3 UID: 0 PID: 179 Comm: insmod Not tainted 6.15.0-rc2 #1 PREEMPT [ 31.648153] Hardware name: linux,dummy-virt (DT) [ 31.648970] Call trace: [ 31.649345] show_stack+0x18/0x24 (C) [ 31.650960] dump_stack_lvl+0x40/0x84 [ 31.651559] dump_stack+0x18/0x24 [ 31.652264] panic+0x138/0x3b4 [ 31.652812] __ktime_get_real_seconds+0x0/0x10 [ 31.653540] test_ubsan_load_invalid_value+0x0/0xa8 [test_ubsan] [ 31.654388] init_module+0x24/0xff4 [test_ubsan] [ 31.655077] do_one_initcall+0xd4/0x280 [ 31.655680] do_init_module+0x58/0x2b4 That happens because the test corrupts other data in the stack: 400: d5384108 mrs x8, sp_el0 404: f9426d08 ldr x8, [x8, #1240] 408: f85f83a9 ldur x9, [x29, #-8] 40c: eb09011f cmp x8, x9 410: 54000301 b.ne 470 <test_ubsan_out_of_bounds+0x154> // b.any As there is no guarantee the compiler will order the local variables as declared in the module: volatile char above[4] = { }; /* Protect surrounding memory. */ volatile int arr[4]; volatile char below[4] = { }; /* Protect surrounding memory. */ There is another problem where the out-of-bound index is 5 which is larger than the extra surrounding memory for protection. So, use a struct to enforce the ordering, and fix the index to be 4. Also, remove some of the volatiles and rely on OPTIMIZER_HIDE_VAR() Signed-off-by: Mostafa Saleh <smostafa@google.com> Link: https://lore.kernel.org/r/20250415203354.4109415-1-smostafa@google.com Signed-off-by: Kees Cook <kees@kernel.org> |
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Nathan Chancellor
|
cdc2e1d9d9 |
lib/Kconfig.ubsan: Remove 'default UBSAN' from UBSAN_INTEGER_WRAP
CONFIG_UBSAN_INTEGER_WRAP is 'default UBSAN', which is problematic for a
couple of reasons.
The first is that this sanitizer is under active development on the
compiler side to come up with a solution that is maintainable on the
compiler side and usable on the kernel side. As a result of this, there
are many warnings when the sanitizer is enabled that have no clear path
to resolution yet but users may see them and report them in the meantime.
The second is that this option was renamed from
CONFIG_UBSAN_SIGNED_WRAP, meaning that if a configuration has
CONFIG_UBSAN=y but CONFIG_UBSAN_SIGNED_WRAP=n and it is upgraded via
olddefconfig (common in non-interactive scenarios such as CI),
CONFIG_UBSAN_INTEGER_WRAP will be silently enabled again.
Remove 'default UBSAN' from CONFIG_UBSAN_INTEGER_WRAP until it is ready
for regular usage and testing from a broader community than the folks
actively working on the feature.
Cc: stable@vger.kernel.org
Fixes:
|
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|
Peter Collingbourne
|
d94c12bd97 |
string: Add load_unaligned_zeropad() code path to sized_strscpy()
The call to read_word_at_a_time() in sized_strscpy() is problematic
with MTE because it may trigger a tag check fault when reading
across a tag granule (16 bytes) boundary. To make this code
MTE compatible, let's start using load_unaligned_zeropad()
on architectures where it is available (i.e. architectures that
define CONFIG_DCACHE_WORD_ACCESS). Because load_unaligned_zeropad()
takes care of page boundaries as well as tag granule boundaries,
also disable the code preventing crossing page boundaries when using
load_unaligned_zeropad().
Signed-off-by: Peter Collingbourne <pcc@google.com>
Link: https://linux-review.googlesource.com/id/If4b22e43b5a4ca49726b4bf98ada827fdf755548
Fixes:
|
||
|
Joel Granados
|
23b8bacf15 |
sysctl: Close test ctl_headers with a for loop
As more tests are added, the exit function gets longer than it should be. Condense the un-register calls into a for loop to make it easier to add/remove tests. Reviewed-by: Kees Cook <kees@kernel.org> Signed-off-by: Joel Granados <joel.granados@kernel.org> |
||
|
Joel Granados
|
2bac112eaa |
sysctl: call sysctl tests with a for loop
As we add more test functions in lib/tests_sysctl the main test function (test_sysctl_init) grows. Condense the logic to make it easier to add/remove tests. Reviewed-by: Kees Cook <kees@kernel.org> Signed-off-by: Joel Granados <joel.granados@kernel.org> |
||
|
Joel Granados
|
138303ec6c |
sysctl: move u8 register test to lib/test_sysctl.c
If the test added in commit |
||
|
Mark Brown
|
4aa502d28b
|
ASoC: tas27{64,70}: improve support for Apple codec
Merge series from James Calligeros <jcalligeros99@gmail.com>: This series introduces a number of changes to the drivers for the Texas Instruments TAS2764 and TAS2770 amplifiers in order to introduce (and improve in the case of TAS2770) support for the variants of these amps found in Apple Silicon Macs. Apple's variant of TAS2764 is known as SN012776, and as always with Apple is a subtly incompatible variant with a number of quirks. It is not publicly available. The TAS2770 variant is known as TAS5770L, and does not require incompatible handling. Much as with the Cirrus codec patches, I do not expect that we will get any official acknowledgement that these parts exist from TI, however I would be delighted to be proven wrong. This series has been living in the downstream Asahi kernel tree[1] for over two years, and has been tested by many thousands of users by this point[2]. v4 drops the TDM idle TX slot behaviour patches. I experimented with the API discussed in v3, however this did not work on any of the machines I tested it with. More tweaking is probably needed. [1] https://github.com/AsahiLinux/linux/tree/asahi-wip [2] https://stats.asahilinux.org/ |
||
|
T.J. Mercier
|
e6e07b696d |
alloc_tag: handle incomplete bulk allocations in vm_module_tags_populate
alloc_pages_bulk_node() may partially succeed and allocate fewer than the requested nr_pages. There are several conditions under which this can occur, but we have encountered the case where CONFIG_PAGE_OWNER is enabled causing all bulk allocations to always fallback to single page allocations due to commit |
||
|
Arnd Bergmann
|
61c4e6ca8c |
kunit: slub: add module description
Modules without a description now cause a warning:
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/tests/slub_kunit.o
Link: https://lkml.kernel.org/r/20250324173242.1501003-10-arnd@kernel.org
Fixes:
|
||
|
Arnd Bergmann
|
91640531b9 |
ucs2_string: add module description
Modules without a description now cause a warning:
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/ucs2_string.o
Link: https://lkml.kernel.org/r/20250324173242.1501003-7-arnd@kernel.org
Fixes:
|
||
|
Arnd Bergmann
|
75dd4975f5 |
zlib: add module description
Modules without a description now cause a warning:
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/zlib_inflate/zlib_inflate.o
Link: https://lkml.kernel.org/r/20250324173242.1501003-6-arnd@kernel.org
Fixes:
|
||
|
Arnd Bergmann
|
a5561c88cf |
ASN.1: add module description
This is needed to avoid a build warning:
WARNING: modpost: missing MODULE_DESCRIPTION() in lib/asn1_decoder.o
Link: https://lkml.kernel.org/r/20250324173242.1501003-2-arnd@kernel.org
Fixes:
|
||
|
Sheng Yong
|
770c8d55c4 |
lib/iov_iter: fix to increase non slab folio refcount
When testing EROFS file-backed mount over v9fs on qemu, I encountered a
folio UAF issue. The page sanity check reports the following call trace.
The root cause is that pages in bvec are coalesced across a folio bounary.
The refcount of all non-slab folios should be increased to ensure
p9_releas_pages can put them correctly.
BUG: Bad page state in process md5sum pfn:18300
page: refcount:0 mapcount:0 mapping:00000000d5ad8e4e index:0x60 pfn:0x18300
head: order:0 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
aops:z_erofs_aops ino:30b0f dentry name(?):"GoogleExtServicesCn.apk"
flags: 0x100000000000041(locked|head|node=0|zone=1)
raw: 0100000000000041 dead000000000100 dead000000000122 ffff888014b13bd0
raw: 0000000000000060 0000000000000020 00000000ffffffff 0000000000000000
head: 0100000000000041 dead000000000100 dead000000000122 ffff888014b13bd0
head: 0000000000000060 0000000000000020 00000000ffffffff 0000000000000000
head: 0100000000000000 0000000000000000 ffffffffffffffff 0000000000000000
head: 0000000000000010 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
Call Trace:
dump_stack_lvl+0x53/0x70
bad_page+0xd4/0x220
__free_pages_ok+0x76d/0xf30
__folio_put+0x230/0x320
p9_release_pages+0x179/0x1f0
p9_virtio_zc_request+0xa2a/0x1230
p9_client_zc_rpc.constprop.0+0x247/0x700
p9_client_read_once+0x34d/0x810
p9_client_read+0xf3/0x150
v9fs_issue_read+0x111/0x360
netfs_unbuffered_read_iter_locked+0x927/0x1390
netfs_unbuffered_read_iter+0xa2/0xe0
vfs_iocb_iter_read+0x2c7/0x460
erofs_fileio_rq_submit+0x46b/0x5b0
z_erofs_runqueue+0x1203/0x21e0
z_erofs_readahead+0x579/0x8b0
read_pages+0x19f/0xa70
page_cache_ra_order+0x4ad/0xb80
filemap_readahead.isra.0+0xe7/0x150
filemap_get_pages+0x7aa/0x1890
filemap_read+0x320/0xc80
vfs_read+0x6c6/0xa30
ksys_read+0xf9/0x1c0
do_syscall_64+0x9e/0x1a0
entry_SYSCALL_64_after_hwframe+0x71/0x79
Link: https://lkml.kernel.org/r/20250401144712.1377719-1-shengyong1@xiaomi.com
Fixes:
|
||
|
Nathan Chancellor
|
b5960a06b9 |
vsprintf: Use __diag macros to disable '-Wsuggest-attribute=format'
The GCC specific warning '-Wsuggest-attribute=format' is disabled around
va_format() using raw #pragma statements, which includes an
'#ifndef __clang__' to avoid a warning about an unknown warning option
from clang (which recognizes '#pragma GCC' for compatibility reasons):
lib/vsprintf.c:1703:32: error: unknown warning group '-Wsuggest-attribute=format', ignored [-Werror,-Wunknown-warning-option]
1703 | #pragma GCC diagnostic ignored "-Wsuggest-attribute=format"
| ^
While the current solution works, it is not visually appealing. The
kernel already has some infrastructure that wraps these #pragma
statements to give more specific control over diagnostics without
needing #ifdef blocks for different compilers. Convert the existing
statements over to the __diag macros.
Closes: https://lore.kernel.org/r/CAHk-=wgfX9nBGE0Ap9GjhOy7Mn=RSy=rx0MvqfYFFDx31KJXqQ@mail.gmail.com
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://patch.msgid.link/20250404-vsprintf-convert-pragmas-to-__diag-v1-2-5d6c5c55b2bd@kernel.org
Signed-off-by: Petr Mladek <pmladek@suse.com>
|
||
|
Linus Torvalds
|
97c484ccb8 |
CRC cleanups for 6.15
Finish cleaning up the CRC kconfig options by removing the remaining unnecessary prompts and an unnecessary 'default y', removing CONFIG_LIBCRC32C, and documenting all the CRC library options. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQSacvsUNc7UX4ntmEPzXCl4vpKOKwUCZ/P7QhQcZWJpZ2dlcnNA Z29vZ2xlLmNvbQAKCRDzXCl4vpKOKyoOAQCynFcS1dWuD27S+SdUREmBjMAoZo5M zdsIvlPv9KLycgD/QX5lXjW3KIYY6jQ8vHUuLVwfDl/JEp4GJS9dLGU+agg= =0R1T -----END PGP SIGNATURE----- Merge tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux Pull CRC cleanups from Eric Biggers: "Finish cleaning up the CRC kconfig options by removing the remaining unnecessary prompts and an unnecessary 'default y', removing CONFIG_LIBCRC32C, and documenting all the CRC library options" * tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: lib/crc: remove CONFIG_LIBCRC32C lib/crc: document all the CRC library kconfig options lib/crc: remove unnecessary prompt for CONFIG_CRC_ITU_T lib/crc: remove unnecessary prompt for CONFIG_CRC_T10DIF lib/crc: remove unnecessary prompt for CONFIG_CRC16 lib/crc: remove unnecessary prompt for CONFIG_CRC_CCITT lib/crc: remove unnecessary prompt for CONFIG_CRC32 and drop 'default y' |
||
|
Cezary Rojewski
|
83b9ae77f0
|
lib/string_helpers: Introduce parse_int_array()
Existing parse_inte_array_user() works with __user buffers only. Separate array parsing from __user bits so the functionality can be utilized with kernel buffers too. Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com> Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20250404090337.3564117-2-cezary.rojewski@intel.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Linus Torvalds
|
f4d2ef4825 |
Kbuild updates for v6.15
- Improve performance in gendwarfksyms
- Remove deprecated EXTRA_*FLAGS and KBUILD_ENABLE_EXTRA_GCC_CHECKS
- Support CONFIG_HEADERS_INSTALL for ARCH=um
- Use more relative paths to sources files for better reproducibility
- Support the loong64 Debian architecture
- Add Kbuild bash completion
- Introduce intermediate vmlinux.unstripped for architectures that need
static relocations to be stripped from the final vmlinux
- Fix versioning in Debian packages for -rc releases
- Treat missing MODULE_DESCRIPTION() as an error
- Convert Nios2 Makefiles to use the generic rule for built-in DTB
- Add debuginfo support to the RPM package
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Merge tag 'kbuild-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
- Improve performance in gendwarfksyms
- Remove deprecated EXTRA_*FLAGS and KBUILD_ENABLE_EXTRA_GCC_CHECKS
- Support CONFIG_HEADERS_INSTALL for ARCH=um
- Use more relative paths to sources files for better reproducibility
- Support the loong64 Debian architecture
- Add Kbuild bash completion
- Introduce intermediate vmlinux.unstripped for architectures that need
static relocations to be stripped from the final vmlinux
- Fix versioning in Debian packages for -rc releases
- Treat missing MODULE_DESCRIPTION() as an error
- Convert Nios2 Makefiles to use the generic rule for built-in DTB
- Add debuginfo support to the RPM package
* tag 'kbuild-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (40 commits)
kbuild: rpm-pkg: build a debuginfo RPM
kconfig: merge_config: use an empty file as initfile
nios2: migrate to the generic rule for built-in DTB
rust: kbuild: skip `--remap-path-prefix` for `rustdoc`
kbuild: pacman-pkg: hardcode module installation path
kbuild: deb-pkg: don't set KBUILD_BUILD_VERSION unconditionally
modpost: require a MODULE_DESCRIPTION()
kbuild: make all file references relative to source root
x86: drop unnecessary prefix map configuration
kbuild: deb-pkg: add comment about future removal of KDEB_COMPRESS
kbuild: Add a help message for "headers"
kbuild: deb-pkg: remove "version" variable in mkdebian
kbuild: deb-pkg: fix versioning for -rc releases
Documentation/kbuild: Fix indentation in modules.rst example
x86: Get rid of Makefile.postlink
kbuild: Create intermediate vmlinux build with relocations preserved
kbuild: Introduce Kconfig symbol for linking vmlinux with relocations
kbuild: link-vmlinux.sh: Make output file name configurable
kbuild: do not generate .tmp_vmlinux*.map when CONFIG_VMLINUX_MAP=y
Revert "kheaders: Ignore silly-rename files"
...
|
||
|
Eric Biggers
|
b261d22220 |
lib/crc: remove CONFIG_LIBCRC32C
Now that LIBCRC32C does nothing besides select CRC32, make every option that selects LIBCRC32C instead select CRC32 directly. Then remove LIBCRC32C. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250401221600.24878-8-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
31ab49a99f |
lib/crc: document all the CRC library kconfig options
Previous commits removed all the original CRC kconfig help text, since it was oriented towards people configuring the kernel, and the options are no longer user-selectable. However, it's still useful for there to be help text for kernel developers. Add this. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250401221600.24878-7-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
a0d55dd740 |
lib/crc: remove unnecessary prompt for CONFIG_CRC_ITU_T
All modules that need CONFIG_CRC_ITU_T already select it, so there is no need to bother users about the option. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250401221600.24878-6-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
a6d0dbba95 |
lib/crc: remove unnecessary prompt for CONFIG_CRC_T10DIF
All modules that need CONFIG_CRC_T10DIF already select it, so there is no need to bother users about the option. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250401221600.24878-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
2038af8eda |
lib/crc: remove unnecessary prompt for CONFIG_CRC16
All modules that need CONFIG_CRC16 already select it, so there is no need to bother users about the option. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250401221600.24878-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
7939da264b |
lib/crc: remove unnecessary prompt for CONFIG_CRC_CCITT
All modules that need CONFIG_CRC_CCITT already select it, so there is no need to bother users about the option. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250401221600.24878-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
9ad19171b6 |
lib/crc: remove unnecessary prompt for CONFIG_CRC32 and drop 'default y'
All modules that need CONFIG_CRC32 already select it, so there is no need to bother users about the option, nor to default it to y. Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250401221600.24878-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Linus Torvalds
|
5a2b5cb76c |
One bugfix and a couple of small late-arriving updates.
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ+4Y2wAKCRDdBJ7gKXxA jpqDAQDE7mee8FW6be6dAD+dAdHgSsKZ9vUm4zQTMsSYTmCaowEAxx3ro7NEO4fk ekxRJGlv0PNRssMbFzMCzR5ig+kzBww= =OX46 -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2025-04-02-22-12' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull more non-MM updates from Andrew Morton: "One bugfix and a couple of small late-arriving updates" * tag 'mm-nonmm-stable-2025-04-02-22-12' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: lib: scatterlist: fix sg_split_phys to preserve original scatterlist offsets lib/sort.c: add _nonatomic() variants with cond_resched() mailmap: add an entry for Nicolas Schier |
||
|
Linus Torvalds
|
8c7c1b5506 |
- The 2 patch series "mm: fixes for fallouts from mem_init() cleanup"
from Mike Rapoport fixes a couple of issues with the just-merged "arch, mm: reduce code duplication in mem_init()" series. - The 4 patch series "MAINTAINERS: add my isub-entries to MM part." from Mike Rapoport does some maintenance on MAINTAINERS. - The 6 patch series "remove tlb_remove_page_ptdesc()" from Qi Zheng does some cleanup work to the page mapping code. - The 7 patch series "mseal system mappings" from Jeff Xu permits sealing of "system mappings", such as vdso, vvar, vvar_vclock, vectors (arm compat-mode), sigpage (arm compat-mode). - Plus the usual shower of singleton patches. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ+4XpgAKCRDdBJ7gKXxA jnwtAP43Rp3zyWf034fEypea36xQqcsy4I7YUTdZEgnFS7LCZwEApM97JvGHsYEr Ns9Zhnh+E3RWASfOAzJoVZVrAaMovg4= =MyVR -----END PGP SIGNATURE----- Merge tag 'mm-stable-2025-04-02-22-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull more MM updates from Andrew Morton: - The series "mm: fixes for fallouts from mem_init() cleanup" from Mike Rapoport fixes a couple of issues with the just-merged "arch, mm: reduce code duplication in mem_init()" series - The series "MAINTAINERS: add my isub-entries to MM part." from Mike Rapoport does some maintenance on MAINTAINERS - The series "remove tlb_remove_page_ptdesc()" from Qi Zheng does some cleanup work to the page mapping code - The series "mseal system mappings" from Jeff Xu permits sealing of "system mappings", such as vdso, vvar, vvar_vclock, vectors (arm compat-mode), sigpage (arm compat-mode) - Plus the usual shower of singleton patches * tag 'mm-stable-2025-04-02-22-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (31 commits) mseal sysmap: add arch-support txt mseal sysmap: enable s390 selftest: test system mappings are sealed mseal sysmap: update mseal.rst mseal sysmap: uprobe mapping mseal sysmap: enable arm64 mseal sysmap: enable x86-64 mseal sysmap: generic vdso vvar mapping selftests: x86: test_mremap_vdso: skip if vdso is msealed mseal sysmap: kernel config and header change mm: pgtable: remove tlb_remove_page_ptdesc() x86: pgtable: convert to use tlb_remove_ptdesc() riscv: pgtable: unconditionally use tlb_remove_ptdesc() mm: pgtable: convert some architectures to use tlb_remove_ptdesc() mm: pgtable: change pt parameter of tlb_remove_ptdesc() to struct ptdesc* mm: pgtable: make generic tlb_remove_table() use struct ptdesc microblaze/mm: put mm_cmdline_setup() in .init.text section mm/memory_hotplug: fix call folio_test_large with tail page in do_migrate_range MAINTAINERS: mm: add entry for secretmem MAINTAINERS: mm: add entry for numa memblocks and numa emulation ... |
||
|
Linus Torvalds
|
af54a3a151 |
more printk changes for 6.15
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||
|
Linus Torvalds
|
48552153cf |
iommufd 6.15 merge window pull
Two significant new items:
- Allow reporting IOMMU HW events to userspace when the events are clearly
linked to a device. This is linked to the VIOMMU object and is intended to
be used by a VMM to forward HW events to the virtual machine as part of
emulating a vIOMMU. ARM SMMUv3 is the first driver to use this
mechanism. Like the existing fault events the data is delivered through
a simple FD returning event records on read().
- PASID support in VFIO. "Process Address Space ID" is a PCI feature that
allows the device to tag all PCI DMA operations with an ID. The IOMMU
will then use the ID to select a unique translation for those DMAs. This
is part of Intel's vIOMMU support as VT-D HW requires the hypervisor to
manage each PASID entry. The support is generic so any VFIO user could
attach any translation to a PASID, and the support should work on ARM
SMMUv3 as well. AMD requires additional driver work.
Some minor updates, along with fixes:
- Prevent using nested parents with fault's, no driver support today
- Put a single "cookie_type" value in the iommu_domain to indicate what
owns the various opaque owner fields
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Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
Pull iommufd updates from Jason Gunthorpe:
"Two significant new items:
- Allow reporting IOMMU HW events to userspace when the events are
clearly linked to a device.
This is linked to the VIOMMU object and is intended to be used by a
VMM to forward HW events to the virtual machine as part of
emulating a vIOMMU. ARM SMMUv3 is the first driver to use this
mechanism. Like the existing fault events the data is delivered
through a simple FD returning event records on read().
- PASID support in VFIO.
The "Process Address Space ID" is a PCI feature that allows the
device to tag all PCI DMA operations with an ID. The IOMMU will
then use the ID to select a unique translation for those DMAs. This
is part of Intel's vIOMMU support as VT-D HW requires the
hypervisor to manage each PASID entry.
The support is generic so any VFIO user could attach any
translation to a PASID, and the support should work on ARM SMMUv3
as well. AMD requires additional driver work.
Some minor updates, along with fixes:
- Prevent using nested parents with fault's, no driver support today
- Put a single "cookie_type" value in the iommu_domain to indicate
what owns the various opaque owner fields"
* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: (49 commits)
iommufd: Test attach before detaching pasid
iommufd: Fix iommu_vevent_header tables markup
iommu: Convert unreachable() to BUG()
iommufd: Balance veventq->num_events inc/dec
iommufd: Initialize the flags of vevent in iommufd_viommu_report_event()
iommufd/selftest: Add coverage for reporting max_pasid_log2 via IOMMU_HW_INFO
iommufd: Extend IOMMU_GET_HW_INFO to report PASID capability
vfio: VFIO_DEVICE_[AT|DE]TACH_IOMMUFD_PT support pasid
vfio-iommufd: Support pasid [at|de]tach for physical VFIO devices
ida: Add ida_find_first_range()
iommufd/selftest: Add coverage for iommufd pasid attach/detach
iommufd/selftest: Add test ops to test pasid attach/detach
iommufd/selftest: Add a helper to get test device
iommufd/selftest: Add set_dev_pasid in mock iommu
iommufd: Allow allocating PASID-compatible domain
iommu/vt-d: Add IOMMU_HWPT_ALLOC_PASID support
iommufd: Enforce PASID-compatible domain for RID
iommufd: Support pasid attach/replace
iommufd: Enforce PASID-compatible domain in PASID path
iommufd/device: Add pasid_attach array to track per-PASID attach
...
|
||
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T Pratham
|
8b46fdaea8 |
lib: scatterlist: fix sg_split_phys to preserve original scatterlist offsets
The split_sg_phys function was incorrectly setting the offsets of all
scatterlist entries (except the first) to 0. Only the first scatterlist
entry's offset and length needs to be modified to account for the skip.
Setting the rest entries' offsets to 0 could lead to incorrect data
access.
I am using this function in a crypto driver that I'm currently developing
(not yet sent to mailing list). During testing, it was observed that the
output scatterlists (except the first one) contained incorrect garbage
data.
I narrowed this issue down to the call of sg_split(). Upon debugging
inside this function, I found that this resetting of offset is the cause
of the problem, causing the subsequent scatterlists to point to incorrect
memory locations in a page. By removing this code, I am obtaining
expected data in all the split output scatterlists. Thus, this was indeed
causing observable runtime effects!
This patch removes the offending code, ensuring that the page offsets in
the input scatterlist are preserved in the output scatterlist.
Link: https://lkml.kernel.org/r/20250319111437.1969903-1-t-pratham@ti.com
Fixes:
|
||
|
Kent Overstreet
|
e2a33a2a32 |
lib/sort.c: add _nonatomic() variants with cond_resched()
bcachefs calls sort() during recovery to sort all keys it found in the journal, and this may be very large - gigabytes on large machines. This has been causing "task blocked" warnings, so needs a cond_resched(). [kent.overstreet@linux.dev: fix kerneldoc] Link: https://lkml.kernel.org/r/cgsr5a447pxqomc4gvznsp5yroqmif4omd7o5lsr2swifjhoic@yzjjrx2bvrq7 Link: https://lkml.kernel.org/r/20250326152606.2594920-1-kent.overstreet@linux.dev Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Cc: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Heiko Carstens
|
1d6fad7b84 |
mseal sysmap: generic vdso vvar mapping
With the introduction of the generic vdso data storage the VM_SEALED_SYSMAP vm flag must be moved from the architecture specific _install_special_mapping() call [1] [2] which maps the vvar mapping to generic code. [1] https://lkml.kernel.org/r/20250305021711.3867874-4-jeffxu@google.com [2] https://lkml.kernel.org/r/20250305021711.3867874-5-jeffxu@google.com Link: https://lkml.kernel.org/r/20250311123326.2686682-2-hca@linux.ibm.com Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Jeff Xu <jeffxu@chromium.org> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
25601e8544 |
Char/Misc/IIO driver updates for 6.15-rc1
Here is the big set of char, misc, iio, and other smaller driver
subsystems for 6.15-rc1. Lots of stuff in here, including:
- loads of IIO changes and driver updates
- counter driver updates
- w1 driver updates
- faux conversions for some drivers that were abusing the platform bus
interface
- coresight driver updates
- rust miscdevice binding updates based on real-world-use
- other minor driver updates
All of these have been in linux-next with no reported issues for quite a
while.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char / misc / IIO driver updates from Greg KH:
"Here is the big set of char, misc, iio, and other smaller driver
subsystems for 6.15-rc1. Lots of stuff in here, including:
- loads of IIO changes and driver updates
- counter driver updates
- w1 driver updates
- faux conversions for some drivers that were abusing the platform
bus interface
- coresight driver updates
- rust miscdevice binding updates based on real-world-use
- other minor driver updates
All of these have been in linux-next with no reported issues for quite
a while"
* tag 'char-misc-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (292 commits)
samples: rust_misc_device: fix markup in top-level docs
Coresight: Fix a NULL vs IS_ERR() bug in probe
misc: lis3lv02d: convert to use faux_device
tlclk: convert to use faux_device
regulator: dummy: convert to use the faux device interface
bus: mhi: host: Fix race between unprepare and queue_buf
coresight: configfs: Constify struct config_item_type
doc: iio: ad7380: describe offload support
iio: ad7380: add support for SPI offload
iio: light: Add check for array bounds in veml6075_read_int_time_ms
iio: adc: ti-ads7924 Drop unnecessary function parameters
staging: iio: ad9834: Use devm_regulator_get_enable()
staging: iio: ad9832: Use devm_regulator_get_enable()
iio: gyro: bmg160_spi: add of_match_table
dt-bindings: iio: adc: Add i.MX94 and i.MX95 support
iio: adc: ad7768-1: remove unnecessary locking
Documentation: ABI: add wideband filter type to sysfs-bus-iio
iio: adc: ad7768-1: set MOSI idle state to prevent accidental reset
iio: adc: ad7768-1: Fix conversion result sign
iio: adc: ad7124: Benefit of dev = indio_dev->dev.parent in ad7124_parse_channel_config()
...
|
||
|
Linus Torvalds
|
d6b02199cd |
- The 7 patch series "powerpc/crash: use generic crashkernel
reservation" from Sourabh Jain changes powerpc's kexec code to use more of the generic layers. - The 2 patch series "get_maintainer: report subsystem status separately" from Vlastimil Babka makes some long-requested improvements to the get_maintainer output. - The 4 patch series "ucount: Simplify refcounting with rcuref_t" from Sebastian Siewior cleans up and optimizing the refcounting in the ucount code. - The 12 patch series "reboot: support runtime configuration of emergency hw_protection action" from Ahmad Fatoum improves the ability for a driver to perform an emergency system shutdown or reboot. - The 16 patch series "Converge on using secs_to_jiffies() part two" from Easwar Hariharan performs further migrations from msecs_to_jiffies() to secs_to_jiffies(). - The 7 patch series "lib/interval_tree: add some test cases and cleanup" from Wei Yang permits more userspace testing of kernel library code, adds some more tests and performs some cleanups. - The 2 patch series "hung_task: Dump the blocking task stacktrace" from Masami Hiramatsu arranges for the hung_task detector to dump the stack of the blocking task and not just that of the blocked task. - The 4 patch series "resource: Split and use DEFINE_RES*() macros" from Andy Shevchenko provides some cleanups to the resource definition macros. - Plus the usual shower of singleton patches - please see the individual changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ+nuqwAKCRDdBJ7gKXxA jtNqAQDxqJpjWkzn4yN9CNSs1ivVx3fr6SqazlYCrt3u89WQvwEA1oRrGpETzUGq r6khQUIcQImPPcjFqEFpuiSOU0MBZA0= =Kii8 -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - The series "powerpc/crash: use generic crashkernel reservation" from Sourabh Jain changes powerpc's kexec code to use more of the generic layers. - The series "get_maintainer: report subsystem status separately" from Vlastimil Babka makes some long-requested improvements to the get_maintainer output. - The series "ucount: Simplify refcounting with rcuref_t" from Sebastian Siewior cleans up and optimizing the refcounting in the ucount code. - The series "reboot: support runtime configuration of emergency hw_protection action" from Ahmad Fatoum improves the ability for a driver to perform an emergency system shutdown or reboot. - The series "Converge on using secs_to_jiffies() part two" from Easwar Hariharan performs further migrations from msecs_to_jiffies() to secs_to_jiffies(). - The series "lib/interval_tree: add some test cases and cleanup" from Wei Yang permits more userspace testing of kernel library code, adds some more tests and performs some cleanups. - The series "hung_task: Dump the blocking task stacktrace" from Masami Hiramatsu arranges for the hung_task detector to dump the stack of the blocking task and not just that of the blocked task. - The series "resource: Split and use DEFINE_RES*() macros" from Andy Shevchenko provides some cleanups to the resource definition macros. - Plus the usual shower of singleton patches - please see the individual changelogs for details. * tag 'mm-nonmm-stable-2025-03-30-18-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (77 commits) mailmap: consolidate email addresses of Alexander Sverdlin fs/procfs: fix the comment above proc_pid_wchan() relay: use kasprintf() instead of fixed buffer formatting resource: replace open coded variant of DEFINE_RES() resource: replace open coded variants of DEFINE_RES_*_NAMED() resource: replace open coded variant of DEFINE_RES_NAMED_DESC() resource: split DEFINE_RES_NAMED_DESC() out of DEFINE_RES_NAMED() samples: add hung_task detector mutex blocking sample hung_task: show the blocker task if the task is hung on mutex kexec_core: accept unaccepted kexec segments' destination addresses watchdog/perf: optimize bytes copied and remove manual NUL-termination lib/interval_tree: fix the comment of interval_tree_span_iter_next_gap() lib/interval_tree: skip the check before go to the right subtree lib/interval_tree: add test case for span iteration lib/interval_tree: add test case for interval_tree_iter_xxx() helpers lib/rbtree: add random seed lib/rbtree: split tests lib/rbtree: enable userland test suite for rbtree related data structure checkpatch: describe --min-conf-desc-length scripts/gdb/symbols: determine KASLR offset on s390 ... |
||
|
Linus Torvalds
|
eb0ece1602 |
- The 6 patch series "Enable strict percpu address space checks" from
Uros Bizjak uses x86 named address space qualifiers to provide compile-time checking of percpu area accesses. This has caused a small amount of fallout - two or three issues were reported. In all cases the calling code was founf to be incorrect. - The 4 patch series "Some cleanup for memcg" from Chen Ridong implements some relatively monir cleanups for the memcontrol code. - The 17 patch series "mm: fixes for device-exclusive entries (hmm)" from David Hildenbrand fixes a boatload of issues which David found then using device-exclusive PTE entries when THP is enabled. More work is needed, but this makes thins better - our own HMM selftests now succeed. - The 2 patch series "mm: zswap: remove z3fold and zbud" from Yosry Ahmed remove the z3fold and zbud implementations. They have been deprecated for half a year and nobody has complained. - The 5 patch series "mm: further simplify VMA merge operation" from Lorenzo Stoakes implements numerous simplifications in this area. No runtime effects are anticipated. - The 4 patch series "mm/madvise: remove redundant mmap_lock operations from process_madvise()" from SeongJae Park rationalizes the locking in the madvise() implementation. Performance gains of 20-25% were observed in one MADV_DONTNEED microbenchmark. - The 12 patch series "Tiny cleanup and improvements about SWAP code" from Baoquan He contains a number of touchups to issues which Baoquan noticed when working on the swap code. - The 2 patch series "mm: kmemleak: Usability improvements" from Catalin Marinas implements a couple of improvements to the kmemleak user-visible output. - The 2 patch series "mm/damon/paddr: fix large folios access and schemes handling" from Usama Arif provides a couple of fixes for DAMON's handling of large folios. - The 3 patch series "mm/damon/core: fix wrong and/or useless damos_walk() behaviors" from SeongJae Park fixes a few issues with the accuracy of kdamond's walking of DAMON regions. - The 3 patch series "expose mapping wrprotect, fix fb_defio use" from Lorenzo Stoakes changes the interaction between framebuffer deferred-io and core MM. No functional changes are anticipated - this is preparatory work for the future removal of page structure fields. - The 4 patch series "mm/damon: add support for hugepage_size DAMOS filter" from Usama Arif adds a DAMOS filter which permits the filtering by huge page sizes. - The 4 patch series "mm: permit guard regions for file-backed/shmem mappings" from Lorenzo Stoakes extends the guard region feature from its present "anon mappings only" state. The feature now covers shmem and file-backed mappings. - The 4 patch series "mm: batched unmap lazyfree large folios during reclamation" from Barry Song cleans up and speeds up the unmapping for pte-mapped large folios. - The 18 patch series "reimplement per-vma lock as a refcount" from Suren Baghdasaryan puts the vm_lock back into the vma. Our reasons for pulling it out were largely bogus and that change made the code more messy. This patchset provides small (0-10%) improvements on one microbenchmark. - The 5 patch series "Docs/mm/damon: misc DAMOS filters documentation fixes and improves" from SeongJae Park does some maintenance work on the DAMON docs. - The 27 patch series "hugetlb/CMA improvements for large systems" from Frank van der Linden addresses a pile of issues which have been observed when using CMA on large machines. - The 2 patch series "mm/damon: introduce DAMOS filter type for unmapped pages" from SeongJae Park enables users of DMAON/DAMOS to filter my the page's mapped/unmapped status. - The 19 patch series "zsmalloc/zram: there be preemption" from Sergey Senozhatsky teaches zram to run its compression and decompression operations preemptibly. - The 12 patch series "selftests/mm: Some cleanups from trying to run them" from Brendan Jackman fixes a pile of unrelated issues which Brendan encountered while runnimg our selftests. - The 2 patch series "fs/proc/task_mmu: add guard region bit to pagemap" from Lorenzo Stoakes permits userspace to use /proc/pid/pagemap to determine whether a particular page is a guard page. - The 7 patch series "mm, swap: remove swap slot cache" from Kairui Song removes the swap slot cache from the allocation path - it simply wasn't being effective. - The 5 patch series "mm: cleanups for device-exclusive entries (hmm)" from David Hildenbrand implements a number of unrelated cleanups in this code. - The 5 patch series "mm: Rework generic PTDUMP configs" from Anshuman Khandual implements a number of preparatoty cleanups to the GENERIC_PTDUMP Kconfig logic. - The 8 patch series "mm/damon: auto-tune aggregation interval" from SeongJae Park implements a feedback-driven automatic tuning feature for DAMON's aggregation interval tuning. - The 5 patch series "Fix lazy mmu mode" from Ryan Roberts fixes some issues in powerpc, sparc and x86 lazy MMU implementations. Ryan did this in preparation for implementing lazy mmu mode for arm64 to optimize vmalloc. - The 2 patch series "mm/page_alloc: Some clarifications for migratetype fallback" from Brendan Jackman reworks some commentary to make the code easier to follow. - The 3 patch series "page_counter cleanup and size reduction" from Shakeel Butt cleans up the page_counter code and fixes a size increase which we accidentally added late last year. - The 3 patch series "Add a command line option that enables control of how many threads should be used to allocate huge pages" from Thomas Prescher does that. It allows the careful operator to significantly reduce boot time by tuning the parallalization of huge page initialization. - The 3 patch series "Fix calculations in trace_balance_dirty_pages() for cgwb" from Tang Yizhou fixes the tracing output from the dirty page balancing code. - The 9 patch series "mm/damon: make allow filters after reject filters useful and intuitive" from SeongJae Park improves the handling of allow and reject filters. Behaviour is made more consistent and the documention is updated accordingly. - The 5 patch series "Switch zswap to object read/write APIs" from Yosry Ahmed updates zswap to the new object read/write APIs and thus permits the removal of some legacy code from zpool and zsmalloc. - The 6 patch series "Some trivial cleanups for shmem" from Baolin Wang does as it claims. - The 20 patch series "fs/dax: Fix ZONE_DEVICE page reference counts" from Alistair Popple regularizes the weird ZONE_DEVICE page refcount handling in DAX, permittig the removal of a number of special-case checks. - The 4 patch series "refactor mremap and fix bug" from Lorenzo Stoakes is a preparatoty refactoring and cleanup of the mremap() code. - The 20 patch series "mm: MM owner tracking for large folios (!hugetlb) + CONFIG_NO_PAGE_MAPCOUNT" from David Hildenbrand reworks the manner in which we determine whether a large folio is known to be mapped exclusively into a single MM. - The 8 patch series "mm/damon: add sysfs dirs for managing DAMOS filters based on handling layers" from SeongJae Park adds a couple of new sysfs directories to ease the management of DAMON/DAMOS filters. - The 13 patch series "arch, mm: reduce code duplication in mem_init()" from Mike Rapoport consolidates many per-arch implementations of mem_init() into code generic code, where that is practical. - The 13 patch series "mm/damon/sysfs: commit parameters online via damon_call()" from SeongJae Park continues the cleaning up of sysfs access to DAMON internal data. - The 3 patch series "mm: page_ext: Introduce new iteration API" from Luiz Capitulino reworks the page_ext initialization to fix a boot-time crash which was observed with an unusual combination of compile and cmdline options. - The 8 patch series "Buddy allocator like (or non-uniform) folio split" from Zi Yan reworks the code to split a folio into smaller folios. The main benefit is lessened memory consumption: fewer post-split folios are generated. - The 2 patch series "Minimize xa_node allocation during xarry split" from Zi Yan reduces the number of xarray xa_nodes which are generated during an xarray split. - The 2 patch series "drivers/base/memory: Two cleanups" from Gavin Shan performs some maintenance work on the drivers/base/memory code. - The 3 patch series "Add tracepoints for lowmem reserves, watermarks and totalreserve_pages" from Martin Liu adds some more tracepoints to the page allocator code. - The 4 patch series "mm/madvise: cleanup requests validations and classifications" from SeongJae Park cleans up some warts which SeongJae observed during his earlier madvise work. - The 3 patch series "mm/hwpoison: Fix regressions in memory failure handling" from Shuai Xue addresses two quite serious regressions which Shuai has observed in the memory-failure implementation. - The 5 patch series "mm: reliable huge page allocator" from Johannes Weiner makes huge page allocations cheaper and more reliable by reducing fragmentation. - The 5 patch series "Minor memcg cleanups & prep for memdescs" from Matthew Wilcox is preparatory work for the future implementation of memdescs. - The 4 patch series "track memory used by balloon drivers" from Nico Pache introduces a way to track memory used by our various balloon drivers. - The 2 patch series "mm/damon: introduce DAMOS filter type for active pages" from Nhat Pham permits users to filter for active/inactive pages, separately for file and anon pages. - The 2 patch series "Adding Proactive Memory Reclaim Statistics" from Hao Jia separates the proactive reclaim statistics from the direct reclaim statistics. - The 2 patch series "mm/vmscan: don't try to reclaim hwpoison folio" from Jinjiang Tu fixes our handling of hwpoisoned pages within the reclaim code. -----BEGIN PGP SIGNATURE----- iHQEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ+nZaAAKCRDdBJ7gKXxA jsOWAPiP4r7CJHMZRK4eyJOkvS1a1r+TsIarrFZtjwvf/GIfAQCEG+JDxVfUaUSF Ee93qSSLR1BkNdDw+931Pu0mXfbnBw== =Pn2K -----END PGP SIGNATURE----- Merge tag 'mm-stable-2025-03-30-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - The series "Enable strict percpu address space checks" from Uros Bizjak uses x86 named address space qualifiers to provide compile-time checking of percpu area accesses. This has caused a small amount of fallout - two or three issues were reported. In all cases the calling code was found to be incorrect. - The series "Some cleanup for memcg" from Chen Ridong implements some relatively monir cleanups for the memcontrol code. - The series "mm: fixes for device-exclusive entries (hmm)" from David Hildenbrand fixes a boatload of issues which David found then using device-exclusive PTE entries when THP is enabled. More work is needed, but this makes thins better - our own HMM selftests now succeed. - The series "mm: zswap: remove z3fold and zbud" from Yosry Ahmed remove the z3fold and zbud implementations. They have been deprecated for half a year and nobody has complained. - The series "mm: further simplify VMA merge operation" from Lorenzo Stoakes implements numerous simplifications in this area. No runtime effects are anticipated. - The series "mm/madvise: remove redundant mmap_lock operations from process_madvise()" from SeongJae Park rationalizes the locking in the madvise() implementation. Performance gains of 20-25% were observed in one MADV_DONTNEED microbenchmark. - The series "Tiny cleanup and improvements about SWAP code" from Baoquan He contains a number of touchups to issues which Baoquan noticed when working on the swap code. - The series "mm: kmemleak: Usability improvements" from Catalin Marinas implements a couple of improvements to the kmemleak user-visible output. - The series "mm/damon/paddr: fix large folios access and schemes handling" from Usama Arif provides a couple of fixes for DAMON's handling of large folios. - The series "mm/damon/core: fix wrong and/or useless damos_walk() behaviors" from SeongJae Park fixes a few issues with the accuracy of kdamond's walking of DAMON regions. - The series "expose mapping wrprotect, fix fb_defio use" from Lorenzo Stoakes changes the interaction between framebuffer deferred-io and core MM. No functional changes are anticipated - this is preparatory work for the future removal of page structure fields. - The series "mm/damon: add support for hugepage_size DAMOS filter" from Usama Arif adds a DAMOS filter which permits the filtering by huge page sizes. - The series "mm: permit guard regions for file-backed/shmem mappings" from Lorenzo Stoakes extends the guard region feature from its present "anon mappings only" state. The feature now covers shmem and file-backed mappings. - The series "mm: batched unmap lazyfree large folios during reclamation" from Barry Song cleans up and speeds up the unmapping for pte-mapped large folios. - The series "reimplement per-vma lock as a refcount" from Suren Baghdasaryan puts the vm_lock back into the vma. Our reasons for pulling it out were largely bogus and that change made the code more messy. This patchset provides small (0-10%) improvements on one microbenchmark. - The series "Docs/mm/damon: misc DAMOS filters documentation fixes and improves" from SeongJae Park does some maintenance work on the DAMON docs. - The series "hugetlb/CMA improvements for large systems" from Frank van der Linden addresses a pile of issues which have been observed when using CMA on large machines. - The series "mm/damon: introduce DAMOS filter type for unmapped pages" from SeongJae Park enables users of DMAON/DAMOS to filter my the page's mapped/unmapped status. - The series "zsmalloc/zram: there be preemption" from Sergey Senozhatsky teaches zram to run its compression and decompression operations preemptibly. - The series "selftests/mm: Some cleanups from trying to run them" from Brendan Jackman fixes a pile of unrelated issues which Brendan encountered while runnimg our selftests. - The series "fs/proc/task_mmu: add guard region bit to pagemap" from Lorenzo Stoakes permits userspace to use /proc/pid/pagemap to determine whether a particular page is a guard page. - The series "mm, swap: remove swap slot cache" from Kairui Song removes the swap slot cache from the allocation path - it simply wasn't being effective. - The series "mm: cleanups for device-exclusive entries (hmm)" from David Hildenbrand implements a number of unrelated cleanups in this code. - The series "mm: Rework generic PTDUMP configs" from Anshuman Khandual implements a number of preparatoty cleanups to the GENERIC_PTDUMP Kconfig logic. - The series "mm/damon: auto-tune aggregation interval" from SeongJae Park implements a feedback-driven automatic tuning feature for DAMON's aggregation interval tuning. - The series "Fix lazy mmu mode" from Ryan Roberts fixes some issues in powerpc, sparc and x86 lazy MMU implementations. Ryan did this in preparation for implementing lazy mmu mode for arm64 to optimize vmalloc. - The series "mm/page_alloc: Some clarifications for migratetype fallback" from Brendan Jackman reworks some commentary to make the code easier to follow. - The series "page_counter cleanup and size reduction" from Shakeel Butt cleans up the page_counter code and fixes a size increase which we accidentally added late last year. - The series "Add a command line option that enables control of how many threads should be used to allocate huge pages" from Thomas Prescher does that. It allows the careful operator to significantly reduce boot time by tuning the parallalization of huge page initialization. - The series "Fix calculations in trace_balance_dirty_pages() for cgwb" from Tang Yizhou fixes the tracing output from the dirty page balancing code. - The series "mm/damon: make allow filters after reject filters useful and intuitive" from SeongJae Park improves the handling of allow and reject filters. Behaviour is made more consistent and the documention is updated accordingly. - The series "Switch zswap to object read/write APIs" from Yosry Ahmed updates zswap to the new object read/write APIs and thus permits the removal of some legacy code from zpool and zsmalloc. - The series "Some trivial cleanups for shmem" from Baolin Wang does as it claims. - The series "fs/dax: Fix ZONE_DEVICE page reference counts" from Alistair Popple regularizes the weird ZONE_DEVICE page refcount handling in DAX, permittig the removal of a number of special-case checks. - The series "refactor mremap and fix bug" from Lorenzo Stoakes is a preparatoty refactoring and cleanup of the mremap() code. - The series "mm: MM owner tracking for large folios (!hugetlb) + CONFIG_NO_PAGE_MAPCOUNT" from David Hildenbrand reworks the manner in which we determine whether a large folio is known to be mapped exclusively into a single MM. - The series "mm/damon: add sysfs dirs for managing DAMOS filters based on handling layers" from SeongJae Park adds a couple of new sysfs directories to ease the management of DAMON/DAMOS filters. - The series "arch, mm: reduce code duplication in mem_init()" from Mike Rapoport consolidates many per-arch implementations of mem_init() into code generic code, where that is practical. - The series "mm/damon/sysfs: commit parameters online via damon_call()" from SeongJae Park continues the cleaning up of sysfs access to DAMON internal data. - The series "mm: page_ext: Introduce new iteration API" from Luiz Capitulino reworks the page_ext initialization to fix a boot-time crash which was observed with an unusual combination of compile and cmdline options. - The series "Buddy allocator like (or non-uniform) folio split" from Zi Yan reworks the code to split a folio into smaller folios. The main benefit is lessened memory consumption: fewer post-split folios are generated. - The series "Minimize xa_node allocation during xarry split" from Zi Yan reduces the number of xarray xa_nodes which are generated during an xarray split. - The series "drivers/base/memory: Two cleanups" from Gavin Shan performs some maintenance work on the drivers/base/memory code. - The series "Add tracepoints for lowmem reserves, watermarks and totalreserve_pages" from Martin Liu adds some more tracepoints to the page allocator code. - The series "mm/madvise: cleanup requests validations and classifications" from SeongJae Park cleans up some warts which SeongJae observed during his earlier madvise work. - The series "mm/hwpoison: Fix regressions in memory failure handling" from Shuai Xue addresses two quite serious regressions which Shuai has observed in the memory-failure implementation. - The series "mm: reliable huge page allocator" from Johannes Weiner makes huge page allocations cheaper and more reliable by reducing fragmentation. - The series "Minor memcg cleanups & prep for memdescs" from Matthew Wilcox is preparatory work for the future implementation of memdescs. - The series "track memory used by balloon drivers" from Nico Pache introduces a way to track memory used by our various balloon drivers. - The series "mm/damon: introduce DAMOS filter type for active pages" from Nhat Pham permits users to filter for active/inactive pages, separately for file and anon pages. - The series "Adding Proactive Memory Reclaim Statistics" from Hao Jia separates the proactive reclaim statistics from the direct reclaim statistics. - The series "mm/vmscan: don't try to reclaim hwpoison folio" from Jinjiang Tu fixes our handling of hwpoisoned pages within the reclaim code. * tag 'mm-stable-2025-03-30-16-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (431 commits) mm/page_alloc: remove unnecessary __maybe_unused in order_to_pindex() x86/mm: restore early initialization of high_memory for 32-bits mm/vmscan: don't try to reclaim hwpoison folio mm/hwpoison: introduce folio_contain_hwpoisoned_page() helper cgroup: docs: add pswpin and pswpout items in cgroup v2 doc mm: vmscan: split proactive reclaim statistics from direct reclaim statistics selftests/mm: speed up split_huge_page_test selftests/mm: uffd-unit-tests support for hugepages > 2M docs/mm/damon/design: document active DAMOS filter type mm/damon: implement a new DAMOS filter type for active pages fs/dax: don't disassociate zero page entries MM documentation: add "Unaccepted" meminfo entry selftests/mm: add commentary about 9pfs bugs fork: use __vmalloc_node() for stack allocation docs/mm: Physical Memory: Populate the "Zones" section xen: balloon: update the NR_BALLOON_PAGES state hv_balloon: update the NR_BALLOON_PAGES state balloon_compaction: update the NR_BALLOON_PAGES state meminfo: add a per node counter for balloon drivers mm: remove references to folio in __memcg_kmem_uncharge_page() ... |
||
|
Linus Torvalds
|
4e82c87058 |
Rust changes for v6.15
Toolchain and infrastructure:
- Extract the 'pin-init' API from the 'kernel' crate and make it into
a standalone crate.
In order to do this, the contents are rearranged so that they can
easily be kept in sync with the version maintained out-of-tree that
other projects have started to use too (or plan to, like QEMU).
This will reduce the maintenance burden for Benno, who will now have
his own sub-tree, and will simplify future expected changes like the
move to use 'syn' to simplify the implementation.
- Add '#[test]'-like support based on KUnit.
We already had doctests support based on KUnit, which takes the
examples in our Rust documentation and runs them under KUnit.
Now, we are adding the beginning of the support for "normal" tests,
similar to those the '#[test]' tests in userspace Rust. For instance:
#[kunit_tests(my_suite)]
mod tests {
#[test]
fn my_test() {
assert_eq!(1 + 1, 2);
}
}
Unlike with doctests, the 'assert*!'s do not map to the KUnit
assertion APIs yet.
- Check Rust signatures at compile time for functions called from C by
name.
In particular, introduce a new '#[export]' macro that can be placed
in the Rust function definition. It will ensure that the function
declaration on the C side matches the signature on the Rust function:
#[export]
pub unsafe extern "C" fn my_function(a: u8, b: i32) -> usize {
// ...
}
The macro essentially forces the compiler to compare the types of
the actual Rust function and the 'bindgen'-processed C signature.
These cases are rare so far. In the future, we may consider
introducing another tool, 'cbindgen', to generate C headers
automatically. Even then, having these functions explicitly marked
may be a good idea anyway.
- Enable the 'raw_ref_op' Rust feature: it is already stable, and
allows us to use the new '&raw' syntax, avoiding a couple macros.
After everyone has migrated, we will disallow the macros.
- Pass the correct target to 'bindgen' on Usermode Linux.
- Fix 'rusttest' build in macOS.
'kernel' crate:
- New 'hrtimer' module: add support for setting up intrusive timers
without allocating when starting the timer. Add support for
'Pin<Box<_>>', 'Arc<_>', 'Pin<&_>' and 'Pin<&mut _>' as pointer types
for use with timer callbacks. Add support for setting clock source
and timer mode.
- New 'dma' module: add a simple DMA coherent allocator abstraction and
a test sample driver.
- 'list' module: make the linked list 'Cursor' point between elements,
rather than at an element, which is more convenient to us and allows
for cursors to empty lists; and document it with examples of how to
perform common operations with the provided methods.
- 'str' module: implement a few traits for 'BStr' as well as the
'strip_prefix()' method.
- 'sync' module: add 'Arc::as_ptr'.
- 'alloc' module: add 'Box::into_pin'.
- 'error' module: extend the 'Result' documentation, including a few
examples on different ways of handling errors, a warning about using
methods that may panic, and links to external documentation.
'macros' crate:
- 'module' macro: add the 'authors' key to support multiple authors.
The original key will be kept until everyone has migrated.
Documentation:
- Add error handling sections.
MAINTAINERS:
- Add Danilo Krummrich as reviewer of the Rust "subsystem".
- Add 'RUST [PIN-INIT]' entry with Benno Lossin as maintainer. It has
its own sub-tree.
- Add sub-tree for 'RUST [ALLOC]'.
- Add 'DMA MAPPING HELPERS DEVICE DRIVER API [RUST]' entry with Abdiel
Janulgue as primary maintainer. It will go through the sub-tree of
the 'RUST [ALLOC]' entry.
- Add 'HIGH-RESOLUTION TIMERS [RUST]' entry with Andreas Hindborg as
maintainer. It has its own sub-tree.
And a few other cleanups and improvements.
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Merge tag 'rust-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull Rust updates from Miguel Ojeda:
"Toolchain and infrastructure:
- Extract the 'pin-init' API from the 'kernel' crate and make it into
a standalone crate.
In order to do this, the contents are rearranged so that they can
easily be kept in sync with the version maintained out-of-tree that
other projects have started to use too (or plan to, like QEMU).
This will reduce the maintenance burden for Benno, who will now
have his own sub-tree, and will simplify future expected changes
like the move to use 'syn' to simplify the implementation.
- Add '#[test]'-like support based on KUnit.
We already had doctests support based on KUnit, which takes the
examples in our Rust documentation and runs them under KUnit.
Now, we are adding the beginning of the support for "normal" tests,
similar to those the '#[test]' tests in userspace Rust. For
instance:
#[kunit_tests(my_suite)]
mod tests {
#[test]
fn my_test() {
assert_eq!(1 + 1, 2);
}
}
Unlike with doctests, the 'assert*!'s do not map to the KUnit
assertion APIs yet.
- Check Rust signatures at compile time for functions called from C
by name.
In particular, introduce a new '#[export]' macro that can be placed
in the Rust function definition. It will ensure that the function
declaration on the C side matches the signature on the Rust
function:
#[export]
pub unsafe extern "C" fn my_function(a: u8, b: i32) -> usize {
// ...
}
The macro essentially forces the compiler to compare the types of
the actual Rust function and the 'bindgen'-processed C signature.
These cases are rare so far. In the future, we may consider
introducing another tool, 'cbindgen', to generate C headers
automatically. Even then, having these functions explicitly marked
may be a good idea anyway.
- Enable the 'raw_ref_op' Rust feature: it is already stable, and
allows us to use the new '&raw' syntax, avoiding a couple macros.
After everyone has migrated, we will disallow the macros.
- Pass the correct target to 'bindgen' on Usermode Linux.
- Fix 'rusttest' build in macOS.
'kernel' crate:
- New 'hrtimer' module: add support for setting up intrusive timers
without allocating when starting the timer. Add support for
'Pin<Box<_>>', 'Arc<_>', 'Pin<&_>' and 'Pin<&mut _>' as pointer
types for use with timer callbacks. Add support for setting clock
source and timer mode.
- New 'dma' module: add a simple DMA coherent allocator abstraction
and a test sample driver.
- 'list' module: make the linked list 'Cursor' point between
elements, rather than at an element, which is more convenient to us
and allows for cursors to empty lists; and document it with
examples of how to perform common operations with the provided
methods.
- 'str' module: implement a few traits for 'BStr' as well as the
'strip_prefix()' method.
- 'sync' module: add 'Arc::as_ptr'.
- 'alloc' module: add 'Box::into_pin'.
- 'error' module: extend the 'Result' documentation, including a few
examples on different ways of handling errors, a warning about
using methods that may panic, and links to external documentation.
'macros' crate:
- 'module' macro: add the 'authors' key to support multiple authors.
The original key will be kept until everyone has migrated.
Documentation:
- Add error handling sections.
MAINTAINERS:
- Add Danilo Krummrich as reviewer of the Rust "subsystem".
- Add 'RUST [PIN-INIT]' entry with Benno Lossin as maintainer. It has
its own sub-tree.
- Add sub-tree for 'RUST [ALLOC]'.
- Add 'DMA MAPPING HELPERS DEVICE DRIVER API [RUST]' entry with
Abdiel Janulgue as primary maintainer. It will go through the
sub-tree of the 'RUST [ALLOC]' entry.
- Add 'HIGH-RESOLUTION TIMERS [RUST]' entry with Andreas Hindborg as
maintainer. It has its own sub-tree.
And a few other cleanups and improvements"
* tag 'rust-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (71 commits)
rust: dma: add `Send` implementation for `CoherentAllocation`
rust: macros: fix `make rusttest` build on macOS
rust: block: refactor to use `&raw mut`
rust: enable `raw_ref_op` feature
rust: uaccess: name the correct function
rust: rbtree: fix comments referring to Box instead of KBox
rust: hrtimer: add maintainer entry
rust: hrtimer: add clocksource selection through `ClockId`
rust: hrtimer: add `HrTimerMode`
rust: hrtimer: implement `HrTimerPointer` for `Pin<Box<T>>`
rust: alloc: add `Box::into_pin`
rust: hrtimer: implement `UnsafeHrTimerPointer` for `Pin<&mut T>`
rust: hrtimer: implement `UnsafeHrTimerPointer` for `Pin<&T>`
rust: hrtimer: add `hrtimer::ScopedHrTimerPointer`
rust: hrtimer: add `UnsafeHrTimerPointer`
rust: hrtimer: allow timer restart from timer handler
rust: str: implement `strip_prefix` for `BStr`
rust: str: implement `AsRef<BStr>` for `[u8]` and `BStr`
rust: str: implement `Index` for `BStr`
rust: str: implement `PartialEq` for `BStr`
...
|
||
|
Linus Torvalds
|
01d5b167dc |
Modules changes for 6.15-rc1
- Use RCU instead of RCU-sched
The mix of rcu_read_lock(), rcu_read_lock_sched() and preempt_disable()
in the module code and its users has been replaced with just
rcu_read_lock().
- The rest of changes are smaller fixes and updates.
The changes have been on linux-next for at least 2 weeks, with the RCU
cleanup present for 2 months. One performance problem was reported with the
RCU change when KASAN + lockdep were enabled, but it was effectively
addressed by the already merged
|
||
|
Linus Torvalds
|
aa918db707 |
bpf_try_alloc_pages
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Merge tag 'bpf_try_alloc_pages' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf try_alloc_pages() support from Alexei Starovoitov:
"The pull includes work from Sebastian, Vlastimil and myself with a lot
of help from Michal and Shakeel.
This is a first step towards making kmalloc reentrant to get rid of
slab wrappers: bpf_mem_alloc, kretprobe's objpool, etc. These patches
make page allocator safe from any context.
Vlastimil kicked off this effort at LSFMM 2024:
https://lwn.net/Articles/974138/
and we continued at LSFMM 2025:
https://lore.kernel.org/all/CAADnVQKfkGxudNUkcPJgwe3nTZ=xohnRshx9kLZBTmR_E1DFEg@mail.gmail.com/
Why:
SLAB wrappers bind memory to a particular subsystem making it
unavailable to the rest of the kernel. Some BPF maps in production
consume Gbytes of preallocated memory. Top 5 in Meta: 1.5G, 1.2G,
1.1G, 300M, 200M. Once we have kmalloc that works in any context BPF
map preallocation won't be necessary.
How:
Synchronous kmalloc/page alloc stack has multiple stages going from
fast to slow: cmpxchg16 -> slab_alloc -> new_slab -> alloc_pages ->
rmqueue_pcplist -> __rmqueue, where rmqueue_pcplist was already
relying on trylock.
This set changes rmqueue_bulk/rmqueue_buddy to attempt a trylock and
return ENOMEM if alloc_flags & ALLOC_TRYLOCK. It then wraps this
functionality into try_alloc_pages() helper. We make sure that the
logic is sane in PREEMPT_RT.
End result: try_alloc_pages()/free_pages_nolock() are safe to call
from any context.
try_kmalloc() for any context with similar trylock approach will
follow. It will use try_alloc_pages() when slab needs a new page.
Though such try_kmalloc/page_alloc() is an opportunistic allocator,
this design ensures that the probability of successful allocation of
small objects (up to one page in size) is high.
Even before we have try_kmalloc(), we already use try_alloc_pages() in
BPF arena implementation and it's going to be used more extensively in
BPF"
* tag 'bpf_try_alloc_pages' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next:
mm: Fix the flipped condition in gfpflags_allow_spinning()
bpf: Use try_alloc_pages() to allocate pages for bpf needs.
mm, bpf: Use memcg in try_alloc_pages().
memcg: Use trylock to access memcg stock_lock.
mm, bpf: Introduce free_pages_nolock()
mm, bpf: Introduce try_alloc_pages() for opportunistic page allocation
locking/local_lock: Introduce localtry_lock_t
|
||
|
Linus Torvalds
|
f90f2145b2 |
s390 updates for 6.15 merge window
- Add sorting of mcount locations at build time - Rework uaccess functions with C exception handling to shorten inline assembly size and enable full inlining. This yields near-optimal code for small constant copies with a ~40kb kernel size increase - Add support for a configurable STRICT_MM_TYPECHECKS which allows to generate better code, but also allows to have type checking for debug builds - Optimize get_lowcore() for common callers with alternatives that nearly revert to the pre-relocated lowcore code, while also slightly reducing syscall entry and exit time - Convert MACHINE_HAS_* checks for single facility tests into cpu_has_* style macros that call test_facility(), and for features with additional conditions, add a new ALT_TYPE_FEATURE alternative to provide a static branch via alternative patching. Also, move machine feature detection to the decompressor for early patching and add debugging functionality to easily show which alternatives are patched - Add exception table support to early boot / startup code to get rid of the open coded exception handling - Use asm_inline for all inline assemblies with EX_TABLE or ALTERNATIVE to ensure correct inlining and unrolling decisions - Remove 2k page table leftovers now that s390 has been switched to always allocate 4k page tables - Split kfence pool into 4k mappings in arch_kfence_init_pool() and remove the architecture-specific kfence_split_mapping() - Use READ_ONCE_NOCHECK() in regs_get_kernel_stack_nth() to silence spurious KASAN warnings from opportunistic ftrace argument tracing - Force __atomic_add_const() variants on s390 to always return void, ensuring compile errors for improper usage - Remove s390's ioremap_wt() and pgprot_writethrough() due to mismatched semantics and lack of known users, relying on asm-generic fallbacks - Signal eventfd in vfio-ap to notify userspace when the guest AP configuration changes, including during mdev removal - Convert mdev_types from an array to a pointer in vfio-ccw and vfio-ap drivers to avoid fake flex array confusion - Cleanup trap code - Remove references to the outdated linux390@de.ibm.com address - Other various small fixes and improvements all over the code -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAmfmuPwACgkQjYWKoQLX FBgTDAgAjKmZ5OYjACRfYepTvKk9SDqa2CBlQZ+BhbAXEVIrxKnv8OkImAXoWNsM mFxiCxAHWdcD+nqTrxFsXhkNLsndijlwnj/IqZgvy6R/3yNtBlAYRPLujOmVrsQB dWB8Dl38p63Ip1JfAqyabiAOUjfhrclRcM5FX5tgciXA6N/vhY3OM6k0+k7wN4Nj Dei/rCrnYRXTrFQgtM4w8JTIrwdnXjeKvaTYCflh4Q5ISJ7TceSF7cqq8HOs5hhK o2ciaoTdx212522CIsxeN3Ls3jrn8bCOCoOeSCysc5RL84grAuFnmjSajo1LFide S/TQtHXYy78Wuei9xvHi561ogiv/ww== =Kxgc -----END PGP SIGNATURE----- Merge tag 's390-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Add sorting of mcount locations at build time - Rework uaccess functions with C exception handling to shorten inline assembly size and enable full inlining. This yields near-optimal code for small constant copies with a ~40kb kernel size increase - Add support for a configurable STRICT_MM_TYPECHECKS which allows to generate better code, but also allows to have type checking for debug builds - Optimize get_lowcore() for common callers with alternatives that nearly revert to the pre-relocated lowcore code, while also slightly reducing syscall entry and exit time - Convert MACHINE_HAS_* checks for single facility tests into cpu_has_* style macros that call test_facility(), and for features with additional conditions, add a new ALT_TYPE_FEATURE alternative to provide a static branch via alternative patching. Also, move machine feature detection to the decompressor for early patching and add debugging functionality to easily show which alternatives are patched - Add exception table support to early boot / startup code to get rid of the open coded exception handling - Use asm_inline for all inline assemblies with EX_TABLE or ALTERNATIVE to ensure correct inlining and unrolling decisions - Remove 2k page table leftovers now that s390 has been switched to always allocate 4k page tables - Split kfence pool into 4k mappings in arch_kfence_init_pool() and remove the architecture-specific kfence_split_mapping() - Use READ_ONCE_NOCHECK() in regs_get_kernel_stack_nth() to silence spurious KASAN warnings from opportunistic ftrace argument tracing - Force __atomic_add_const() variants on s390 to always return void, ensuring compile errors for improper usage - Remove s390's ioremap_wt() and pgprot_writethrough() due to mismatched semantics and lack of known users, relying on asm-generic fallbacks - Signal eventfd in vfio-ap to notify userspace when the guest AP configuration changes, including during mdev removal - Convert mdev_types from an array to a pointer in vfio-ccw and vfio-ap drivers to avoid fake flex array confusion - Cleanup trap code - Remove references to the outdated linux390@de.ibm.com address - Other various small fixes and improvements all over the code * tag 's390-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (78 commits) s390: Use inline qualifier for all EX_TABLE and ALTERNATIVE inline assemblies s390/kfence: Split kfence pool into 4k mappings in arch_kfence_init_pool() s390/ptrace: Avoid KASAN false positives in regs_get_kernel_stack_nth() s390/boot: Ignore vmlinux.map s390/sysctl: Remove "vm/allocate_pgste" sysctl s390: Remove 2k vs 4k page table leftovers s390/tlb: Use mm_has_pgste() instead of mm_alloc_pgste() s390/lowcore: Use lghi instead llilh to clear register s390/syscall: Merge __do_syscall() and do_syscall() s390/spinlock: Implement SPINLOCK_LOCKVAL with inline assembly s390/smp: Implement raw_smp_processor_id() with inline assembly s390/current: Implement current with inline assembly s390/lowcore: Use inline qualifier for get_lowcore() inline assembly s390: Move s390 sysctls into their own file under arch/s390 s390/syscall: Simplify syscall_get_arguments() s390/vfio-ap: Notify userspace that guest's AP config changed when mdev removed s390: Remove ioremap_wt() and pgprot_writethrough() s390/mm: Add configurable STRICT_MM_TYPECHECKS s390/mm: Convert pgste_val() into function s390/mm: Convert pgprot_val() into function ... |
||
|
Linus Torvalds
|
e5e0e6bebe |
This update includes the following changes:
API: - Remove legacy compression interface. - Improve scatterwalk API. - Add request chaining to ahash and acomp. - Add virtual address support to ahash and acomp. - Add folio support to acomp. - Remove NULL dst support from acomp. Algorithms: - Library options are fuly hidden (selected by kernel users only). - Add Kerberos5 algorithms. - Add VAES-based ctr(aes) on x86. - Ensure LZO respects output buffer length on compression. - Remove obsolete SIMD fallback code path from arm/ghash-ce. Drivers: - Add support for PCI device 0x1134 in ccp. - Add support for rk3588's standalone TRNG in rockchip. - Add Inside Secure SafeXcel EIP-93 crypto engine support in eip93. - Fix bugs in tegra uncovered by multi-threaded self-test. - Fix corner cases in hisilicon/sec2. Others: - Add SG_MITER_LOCAL to sg miter. - Convert ubifs, hibernate and xfrm_ipcomp from legacy API to acomp. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEn51F/lCuNhUwmDeSxycdCkmxi6cFAmfiQ9kACgkQxycdCkmx i6fFZg/9GWjC1FLEV66vNlYAIzFGwzwWdFGyQzXyP235Cphhm4qt9gx7P91N6Lvc pplVjNEeZHoP8lMw+AIeGc2cRhIwsvn8C+HA3tCBOoC1qSe8T9t7KHAgiRGd/0iz UrzVBFLYlR9i4tc0T5peyQwSctv8DfjWzduTmI3Ts8i7OQcfeVVgj3sGfWam7kjF 1GJWIQH7aPzT8cwFtk8gAK1insuPPZelT1Ppl9kUeZe0XUibrP7Gb5G9simxXAyi B+nLCaJYS6Hc1f47cfR/qyZSeYQN35KTVrEoKb1pTYXfEtMv6W9fIvQVLJRYsqpH RUBdDJUseE+WckR6glX9USrh+Fv9d+HfsTXh1fhpApKU5sQJ7pDbUm4ge8p6htNG MIszbJPdqajYveRLuPUjFlUXaqomos8eT6BZA+RLHm1cogzEOm+5bjspbfRNAVPj x9KiDu5lXNiFj02v/MkLKUe3bnGIyVQnZNi7Rn0Rpxjv95tIjVpksZWMPJarxUC6 5zdyM2I5X0Z9+teBpbfWyqfzSbAs/KpzV8S/xNvWDUT6NlpYGBeNXrCDTXcwJLAh PRW0w1EJUwsZbPi8GEh5jNzo/YK1cGsUKrihKv7YgqSSopMLI8e/WVr8nKZMVDFA O+6F6ec5lR7KsOIMGUqrBGFU1ccAeaLLvLK3H5J8//gMMg82Uik= =aQNt -----END PGP SIGNATURE----- Merge tag 'v6.15-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "API: - Remove legacy compression interface - Improve scatterwalk API - Add request chaining to ahash and acomp - Add virtual address support to ahash and acomp - Add folio support to acomp - Remove NULL dst support from acomp Algorithms: - Library options are fuly hidden (selected by kernel users only) - Add Kerberos5 algorithms - Add VAES-based ctr(aes) on x86 - Ensure LZO respects output buffer length on compression - Remove obsolete SIMD fallback code path from arm/ghash-ce Drivers: - Add support for PCI device 0x1134 in ccp - Add support for rk3588's standalone TRNG in rockchip - Add Inside Secure SafeXcel EIP-93 crypto engine support in eip93 - Fix bugs in tegra uncovered by multi-threaded self-test - Fix corner cases in hisilicon/sec2 Others: - Add SG_MITER_LOCAL to sg miter - Convert ubifs, hibernate and xfrm_ipcomp from legacy API to acomp" * tag 'v6.15-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (187 commits) crypto: testmgr - Add multibuffer acomp testing crypto: acomp - Fix synchronous acomp chaining fallback crypto: testmgr - Add multibuffer hash testing crypto: hash - Fix synchronous ahash chaining fallback crypto: arm/ghash-ce - Remove SIMD fallback code path crypto: essiv - Replace memcpy() + NUL-termination with strscpy() crypto: api - Call crypto_alg_put in crypto_unregister_alg crypto: scompress - Fix incorrect stream freeing crypto: lib/chacha - remove unused arch-specific init support crypto: remove obsolete 'comp' compression API crypto: compress_null - drop obsolete 'comp' implementation crypto: cavium/zip - drop obsolete 'comp' implementation crypto: zstd - drop obsolete 'comp' implementation crypto: lzo - drop obsolete 'comp' implementation crypto: lzo-rle - drop obsolete 'comp' implementation crypto: lz4hc - drop obsolete 'comp' implementation crypto: lz4 - drop obsolete 'comp' implementation crypto: deflate - drop obsolete 'comp' implementation crypto: 842 - drop obsolete 'comp' implementation crypto: nx - Migrate to scomp API ... |
||
|
Andy Shevchenko
|
bd67c1c3c3 |
vsnprintf: Silence false positive GCC warning for va_format()
va_format() is using vsnprintf(), and GCC compiler (Debian 14.2.0-17) is not happy about this: lib/vsprintf.c:1704:9: error: function ‘va_format’ might be a candidate for ‘gnu_print ’ format attribute [-Werror=suggest-attribute=format] Fix the compilation errors (`make W=1` when CONFIG_WERROR=y, which is default) by silencing the false positive GCC warning. Suggested-by: Rasmus Villemoes <ravi@prevas.dk> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Kees Cook <kees@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20250321144822.324050-7-andriy.shevchenko@linux.intel.com Signed-off-by: Petr Mladek <pmladek@suse.com> |
||
|
Andy Shevchenko
|
a1aea76a4a |
vsnprintf: Drop unused const char fmt * in va_format()
va_format() doesn't use original formatting string, drop that argument as it's done elsewhere in similar cases. Suggested-by: Rasmus Villemoes <ravi@prevas.dk> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Kees Cook <kees@kernel.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20250321144822.324050-6-andriy.shevchenko@linux.intel.com Signed-off-by: Petr Mladek <pmladek@suse.com> |
||
|
Linus Torvalds
|
a10c7949ad |
linux_kselftest-kunit-6.15-rc1
kunit tool:
- Changes to kunit tool to use qboot on QEMU x86_64, and build GDB scripts.
- Fixes kunit tool bug in parsing test plan.
- Adds test to kunit tool to check parsing late test plan.
kunit:
- Clarifies kunit_skip() argument name.
- Adds Kunit check for the longest symbol length.
- Changes qemu_configs for sparc to use Zilog console.
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Merge tag 'linux_kselftest-kunit-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kunit updates from Shuah Khan:
"kunit tool:
- Changes to kunit tool to use qboot on QEMU x86_64, and build GDB
scripts
- Fixes kunit tool bug in parsing test plan
- Adds test to kunit tool to check parsing late test plan
kunit:
- Clarifies kunit_skip() argument name
- Adds Kunit check for the longest symbol length
- Changes qemu_configs for sparc to use Zilog console"
* tag 'linux_kselftest-kunit-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: tool: add test to check parsing late test plan
kunit: tool: Fix bug in parsing test plan
Kunit to check the longest symbol length
kunit: Clarify kunit_skip() argument name
kunit: tool: Build GDB scripts
kunit: qemu_configs: sparc: use Zilog console
kunit: tool: Use qboot on QEMU x86_64
|
||
|
Linus Torvalds
|
3a90a72aca |
asm-generic changes for 6.15
This is mainly set of cleanups of asm-generic/io.h, resolving problems with inconsistent semantics of ioread64/iowrite64 that were causing runtime and build issues. The "GENERIC_IOMAP" version that switches between inb()/outb() and readb()/writeb() style accessors is now only used on architectures that have PC-style ISA devices that are not memory mapped (x86, uml, m68k-q40 and powerpc-powernv), while alpha and parisc use a more complicated variant and everything else just maps the ioread interfaces to plan MMIO (readb/writeb etc). In addition there are two small changes from Raag Jadav to simplify the asm-generic/io.h indirect inclusions and from Jann Horn to fix a corner case with read_word_at_a_time. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmfkb2MACgkQYKtH/8kJ UicZMg//Va7h0cZBAM64yvHH9SJ1JrM2u4oZNspvcWuncpqaDp3/lFAUBf1m0m46 PhZ8mJmVm/qD7DH8uJRA4kI9t0hjeI1nwb2Pgo60omEpZKY2nIJMsJMIluQYEdAt nthz9RUvNOu0WSR/zMVmLfEAtncNewJzyUrlTnoQnIM9S+WQ8e5f1TxZbaz754Cb XYOpfZNj4nyP3wXtMedee3eZiKKxs/OcZBLoGyKnrBIkUbHCucXsAL962SoI3AXr pMjAIVNC1588fhOc2fA9Jl3K73j8Tj7/34UM+ztd5wxI1lwepxq4EDOCyJrhF5Oh z7oZ4laGoIc4i1aSrUWFK10TrcSBvC9D3zvUjYL8ryYw3HrpB3VppcObpCBtpWZS 97LGSlwq8UmkQOXt8xFzffOEDSh97ojxJAvUUUtuQtnS7PbkmyZ/OCnddBb0F7pa Bg68mzzZHm8/WUCMXwKxh+GA+qVZsMsPaPaexS/aG/TuV7+Mnj93GY1GSkj3Qzaw T9eUuGnFRCvSHU/WJ/Lrl4X1dFdWgHAbSOMNZBVfRFgSUt1ypChV1Sqt2jEfe6Uv dEeD84vZ0uhTsLoFVv/V4xY0osGKL+kAAtEwszLPfmP43kH+jC7cD3+CSTHW0IgV EHuFcjv2CraTF3wvX8Mph6ivoh1EwW/ycFm2mw8onloUUZaoMHM= =6j9g -----END PGP SIGNATURE----- Merge tag 'asm-generic-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic updates from Arnd Bergmann: "This is mainly set of cleanups of asm-generic/io.h, resolving problems with inconsistent semantics of ioread64/iowrite64 that were causing runtime and build issues. The "GENERIC_IOMAP" version that switches between inb()/outb() and readb()/writeb() style accessors is now only used on architectures that have PC-style ISA devices that are not memory mapped (x86, uml, m68k-q40 and powerpc-powernv), while alpha and parisc use a more complicated variant and everything else just maps the ioread interfaces to plan MMIO (readb/writeb etc). In addition there are two small changes from Raag Jadav to simplify the asm-generic/io.h indirect inclusions and from Jann Horn to fix a corner case with read_word_at_a_time" * tag 'asm-generic-6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: rwonce: fix crash by removing READ_ONCE() for unaligned read rwonce: handle KCSAN like KASAN in read_word_at_a_time() m68k: coldfire: select PCI_IOMAP for PCI mips: export pci_iounmap() mips: fix PCI_IOBASE definition m68k/nommu: stop using GENERIC_IOMAP mips: drop GENERIC_IOMAP wrapper powerpc: asm/io.h: remove split ioread64/iowrite64 helpers parisc: stop using asm-generic/iomap.h sh: remove duplicate ioread/iowrite helpers alpha: stop using asm-generic/iomap.h io.h: drop unused headers drm/draw: include missing headers asm-generic/io.h: rework split ioread64/iowrite64 helpers |
||
|
Linus Torvalds
|
1a9239bb42 |
Networking changes for 6.15.
Core & protocols
----------------
- Continue Netlink conversions to per-namespace RTNL lock
(IPv4 routing, routing rules, routing next hops, ARP ioctls).
- Continue extending the use of netdev instance locks. As a driver
opt-in protect queue operations and (in due course) ethtool
operations with the instance lock and not RTNL lock.
- Support collecting TCP timestamps (data submitted, sent, acked)
in BPF, allowing for transparent (to the application) and lower
overhead tracking of TCP RPC performance.
- Tweak existing networking Rx zero-copy infra to support zero-copy
Rx via io_uring.
- Optimize MPTCP performance in single subflow mode by 29%.
- Enable GRO on packets which went thru XDP CPU redirect (were queued
for processing on a different CPU). Improving TCP stream performance
up to 2x.
- Improve performance of contended connect() by 200% by searching
for an available 4-tuple under RCU rather than a spin lock.
Bring an additional 229% improvement by tweaking hash distribution.
- Avoid unconditionally touching sk_tsflags on RX, improving
performance under UDP flood by as much as 10%.
- Avoid skb_clone() dance in ping_rcv() to improve performance under
ping flood.
- Avoid FIB lookup in netfilter if socket is available, 20% perf win.
- Rework network device creation (in-kernel) API to more clearly
identify network namespaces and their roles.
There are up to 4 namespace roles but we used to have just 2 netns
pointer arguments, interpreted differently based on context.
- Use sysfs_break_active_protection() instead of trylock to avoid
deadlocks between unregistering objects and sysfs access.
- Add a new sysctl and sockopt for capping max retransmit timeout
in TCP.
- Support masking port and DSCP in routing rule matches.
- Support dumping IPv4 multicast addresses with RTM_GETMULTICAST.
- Support specifying at what time packet should be sent on AF_XDP
sockets.
- Expose TCP ULP diagnostic info (for TLS and MPTCP) to non-admin users.
- Add Netlink YAML spec for WiFi (nl80211) and conntrack.
- Introduce EXPORT_IPV6_MOD() and EXPORT_IPV6_MOD_GPL() for symbols
which only need to be exported when IPv6 support is built as a module.
- Age FDB entries based on Rx not Tx traffic in VxLAN, similar
to normal bridging.
- Allow users to specify source port range for GENEVE tunnels.
- netconsole: allow attaching kernel release, CPU ID and task name
to messages as metadata
Driver API
----------
- Continue rework / fixing of Energy Efficient Ethernet (EEE) across
the SW layers. Delegate the responsibilities to phylink where possible.
Improve its handling in phylib.
- Support symmetric OR-XOR RSS hashing algorithm.
- Support tracking and preserving IRQ affinity by NAPI itself.
- Support loopback mode speed selection for interface selftests.
Device drivers
--------------
- Remove the IBM LCS driver for s390.
- Remove the sb1000 cable modem driver.
- Add support for SFP module access over SMBus.
- Add MCTP transport driver for MCTP-over-USB.
- Enable XDP metadata support in multiple drivers.
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- add PCIe TLP Processing Hints (TPH) support for new AMD platforms
- support dumping RoCE queue state for debug
- opt into instance locking
- Intel (100G, ice, idpf):
- ice: rework MSI-X IRQ management and distribution
- ice: support for E830 devices
- iavf: add support for Rx timestamping
- iavf: opt into instance locking
- nVidia/Mellanox:
- mlx4: use page pool memory allocator for Rx
- mlx5: support for one PTP device per hardware clock
- mlx5: support for 200Gbps per-lane link modes
- mlx5: move IPSec policy check after decryption
- AMD/Solarflare:
- support FW flashing via devlink
- Cisco (enic):
- use page pool memory allocator for Rx
- enable 32, 64 byte CQEs
- get max rx/tx ring size from the device
- Meta (fbnic):
- support flow steering and RSS configuration
- report queue stats
- support TCP segmentation
- support IRQ coalescing
- support ring size configuration
- Marvell/Cavium:
- support AF_XDP
- Wangxun:
- support for PTP clock and timestamping
- Huawei (hibmcge):
- checksum offload
- add more statistics
- Ethernet virtual:
- VirtIO net:
- aggressively suppress Tx completions, improve perf by 96% with
1 CPU and 55% with 2 CPUs
- expose NAPI to IRQ mapping and persist NAPI settings
- Google (gve):
- support XDP in DQO RDA Queue Format
- opt into instance locking
- Microsoft vNIC:
- support BIG TCP
- Ethernet NICs consumer, and embedded:
- Synopsys (stmmac):
- cleanup Tx and Tx clock setting and other link-focused cleanups
- enable SGMII and 2500BASEX mode switching for Intel platforms
- support Sophgo SG2044
- Broadcom switches (b53):
- support for BCM53101
- TI:
- iep: add perout configuration support
- icssg: support XDP
- Cadence (macb):
- implement BQL
- Xilinx (axinet):
- support dynamic IRQ moderation and changing coalescing at runtime
- implement BQL
- report standard stats
- MediaTek:
- support phylink managed EEE
- Intel:
- igc: don't restart the interface on every XDP program change
- RealTek (r8169):
- support reading registers of internal PHYs directly
- increase max jumbo packet size on RTL8125/RTL8126
- Airoha:
- support for RISC-V NPU packet processing unit
- enable scatter-gather and support MTU up to 9kB
- Tehuti (tn40xx):
- support cards with TN4010 MAC and an Aquantia AQR105 PHY
- Ethernet PHYs:
- support for TJA1102S, TJA1121
- dp83tg720: add randomized polling intervals for link detection
- dp83822: support changing the transmit amplitude voltage
- support for LEDs on 88q2xxx
- CAN:
- canxl: support Remote Request Substitution bit access
- flexcan: add S32G2/S32G3 SoC
- WiFi:
- remove cooked monitor support
- strict mode for better AP testing
- basic EPCS support
- OMI RX bandwidth reduction support
- batman-adv: add support for jumbo frames
- WiFi drivers:
- RealTek (rtw88):
- support RTL8814AE and RTL8814AU
- RealTek (rtw89):
- switch using wiphy_lock and wiphy_work
- add BB context to manipulate two PHY as preparation of MLO
- improve BT-coexistence mechanism to play A2DP smoothly
- Intel (iwlwifi):
- add new iwlmld sub-driver for latest HW/FW combinations
- MediaTek (mt76):
- preparation for mt7996 Multi-Link Operation (MLO) support
- Qualcomm/Atheros (ath12k):
- continued work on MLO
- Silabs (wfx):
- Wake-on-WLAN support
- Bluetooth:
- add support for skb TX SND/COMPLETION timestamping
- hci_core: enable buffer flow control for SCO/eSCO
- coredump: log devcd dumps into the monitor
- Bluetooth drivers:
- intel: add support to configure TX power
- nxp: handle bootloader error during cmd5 and cmd7
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Continue Netlink conversions to per-namespace RTNL lock
(IPv4 routing, routing rules, routing next hops, ARP ioctls)
- Continue extending the use of netdev instance locks. As a driver
opt-in protect queue operations and (in due course) ethtool
operations with the instance lock and not RTNL lock.
- Support collecting TCP timestamps (data submitted, sent, acked) in
BPF, allowing for transparent (to the application) and lower
overhead tracking of TCP RPC performance.
- Tweak existing networking Rx zero-copy infra to support zero-copy
Rx via io_uring.
- Optimize MPTCP performance in single subflow mode by 29%.
- Enable GRO on packets which went thru XDP CPU redirect (were queued
for processing on a different CPU). Improving TCP stream
performance up to 2x.
- Improve performance of contended connect() by 200% by searching for
an available 4-tuple under RCU rather than a spin lock. Bring an
additional 229% improvement by tweaking hash distribution.
- Avoid unconditionally touching sk_tsflags on RX, improving
performance under UDP flood by as much as 10%.
- Avoid skb_clone() dance in ping_rcv() to improve performance under
ping flood.
- Avoid FIB lookup in netfilter if socket is available, 20% perf win.
- Rework network device creation (in-kernel) API to more clearly
identify network namespaces and their roles. There are up to 4
namespace roles but we used to have just 2 netns pointer arguments,
interpreted differently based on context.
- Use sysfs_break_active_protection() instead of trylock to avoid
deadlocks between unregistering objects and sysfs access.
- Add a new sysctl and sockopt for capping max retransmit timeout in
TCP.
- Support masking port and DSCP in routing rule matches.
- Support dumping IPv4 multicast addresses with RTM_GETMULTICAST.
- Support specifying at what time packet should be sent on AF_XDP
sockets.
- Expose TCP ULP diagnostic info (for TLS and MPTCP) to non-admin
users.
- Add Netlink YAML spec for WiFi (nl80211) and conntrack.
- Introduce EXPORT_IPV6_MOD() and EXPORT_IPV6_MOD_GPL() for symbols
which only need to be exported when IPv6 support is built as a
module.
- Age FDB entries based on Rx not Tx traffic in VxLAN, similar to
normal bridging.
- Allow users to specify source port range for GENEVE tunnels.
- netconsole: allow attaching kernel release, CPU ID and task name to
messages as metadata
Driver API:
- Continue rework / fixing of Energy Efficient Ethernet (EEE) across
the SW layers. Delegate the responsibilities to phylink where
possible. Improve its handling in phylib.
- Support symmetric OR-XOR RSS hashing algorithm.
- Support tracking and preserving IRQ affinity by NAPI itself.
- Support loopback mode speed selection for interface selftests.
Device drivers:
- Remove the IBM LCS driver for s390
- Remove the sb1000 cable modem driver
- Add support for SFP module access over SMBus
- Add MCTP transport driver for MCTP-over-USB
- Enable XDP metadata support in multiple drivers
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- add PCIe TLP Processing Hints (TPH) support for new AMD
platforms
- support dumping RoCE queue state for debug
- opt into instance locking
- Intel (100G, ice, idpf):
- ice: rework MSI-X IRQ management and distribution
- ice: support for E830 devices
- iavf: add support for Rx timestamping
- iavf: opt into instance locking
- nVidia/Mellanox:
- mlx4: use page pool memory allocator for Rx
- mlx5: support for one PTP device per hardware clock
- mlx5: support for 200Gbps per-lane link modes
- mlx5: move IPSec policy check after decryption
- AMD/Solarflare:
- support FW flashing via devlink
- Cisco (enic):
- use page pool memory allocator for Rx
- enable 32, 64 byte CQEs
- get max rx/tx ring size from the device
- Meta (fbnic):
- support flow steering and RSS configuration
- report queue stats
- support TCP segmentation
- support IRQ coalescing
- support ring size configuration
- Marvell/Cavium:
- support AF_XDP
- Wangxun:
- support for PTP clock and timestamping
- Huawei (hibmcge):
- checksum offload
- add more statistics
- Ethernet virtual:
- VirtIO net:
- aggressively suppress Tx completions, improve perf by 96%
with 1 CPU and 55% with 2 CPUs
- expose NAPI to IRQ mapping and persist NAPI settings
- Google (gve):
- support XDP in DQO RDA Queue Format
- opt into instance locking
- Microsoft vNIC:
- support BIG TCP
- Ethernet NICs consumer, and embedded:
- Synopsys (stmmac):
- cleanup Tx and Tx clock setting and other link-focused
cleanups
- enable SGMII and 2500BASEX mode switching for Intel platforms
- support Sophgo SG2044
- Broadcom switches (b53):
- support for BCM53101
- TI:
- iep: add perout configuration support
- icssg: support XDP
- Cadence (macb):
- implement BQL
- Xilinx (axinet):
- support dynamic IRQ moderation and changing coalescing at
runtime
- implement BQL
- report standard stats
- MediaTek:
- support phylink managed EEE
- Intel:
- igc: don't restart the interface on every XDP program change
- RealTek (r8169):
- support reading registers of internal PHYs directly
- increase max jumbo packet size on RTL8125/RTL8126
- Airoha:
- support for RISC-V NPU packet processing unit
- enable scatter-gather and support MTU up to 9kB
- Tehuti (tn40xx):
- support cards with TN4010 MAC and an Aquantia AQR105 PHY
- Ethernet PHYs:
- support for TJA1102S, TJA1121
- dp83tg720: add randomized polling intervals for link detection
- dp83822: support changing the transmit amplitude voltage
- support for LEDs on 88q2xxx
- CAN:
- canxl: support Remote Request Substitution bit access
- flexcan: add S32G2/S32G3 SoC
- WiFi:
- remove cooked monitor support
- strict mode for better AP testing
- basic EPCS support
- OMI RX bandwidth reduction support
- batman-adv: add support for jumbo frames
- WiFi drivers:
- RealTek (rtw88):
- support RTL8814AE and RTL8814AU
- RealTek (rtw89):
- switch using wiphy_lock and wiphy_work
- add BB context to manipulate two PHY as preparation of MLO
- improve BT-coexistence mechanism to play A2DP smoothly
- Intel (iwlwifi):
- add new iwlmld sub-driver for latest HW/FW combinations
- MediaTek (mt76):
- preparation for mt7996 Multi-Link Operation (MLO) support
- Qualcomm/Atheros (ath12k):
- continued work on MLO
- Silabs (wfx):
- Wake-on-WLAN support
- Bluetooth:
- add support for skb TX SND/COMPLETION timestamping
- hci_core: enable buffer flow control for SCO/eSCO
- coredump: log devcd dumps into the monitor
- Bluetooth drivers:
- intel: add support to configure TX power
- nxp: handle bootloader error during cmd5 and cmd7"
* tag 'net-next-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1681 commits)
unix: fix up for "apparmor: add fine grained af_unix mediation"
mctp: Fix incorrect tx flow invalidation condition in mctp-i2c
net: usb: asix: ax88772: Increase phy_name size
net: phy: Introduce PHY_ID_SIZE — minimum size for PHY ID string
net: libwx: fix Tx L4 checksum
net: libwx: fix Tx descriptor content for some tunnel packets
atm: Fix NULL pointer dereference
net: tn40xx: add pci-id of the aqr105-based Tehuti TN4010 cards
net: tn40xx: prepare tn40xx driver to find phy of the TN9510 card
net: tn40xx: create swnode for mdio and aqr105 phy and add to mdiobus
net: phy: aquantia: add essential functions to aqr105 driver
net: phy: aquantia: search for firmware-name in fwnode
net: phy: aquantia: add probe function to aqr105 for firmware loading
net: phy: Add swnode support to mdiobus_scan
gve: add XDP DROP and PASS support for DQ
gve: update XDP allocation path support RX buffer posting
gve: merge packet buffer size fields
gve: update GQ RX to use buf_size
gve: introduce config-based allocation for XDP
gve: remove xdp_xsk_done and xdp_xsk_wakeup statistics
...
|
||
|
Linus Torvalds
|
e61f33273c |
Update zstd to the latest upstream release v1.5.7. Imported cleanly from the
upstream tag v1.5.7-kernel, which is signed by upstream's signing key EF8FE99528B52FFD. Link: https://github.com/facebook/zstd/releases/tag/v1.5.7 Link: https://github.com/facebook/zstd/releases/tag/v1.5.7-kernel Link: https://keyserver.ubuntu.com/pks/lookup?search=EF8FE99528B52FFD&fingerprint=on&op=index Signed-off-by: Nick Terrell <terrelln@fb.com> -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEmIwAqlFIzbQodPwyuzRpqaNEqPUFAmfjI5oACgkQuzRpqaNE qPUZJA//foLgy1etgBSTaUbCCIFxOLguFjmH2qfs/0yGX1ekhlv5jXobyUmKhYVM q0WR3G4lS1MNC40T9zNoKR0GfmZGyrCjOlGkwMEwdNYc+4y5sWujbckE+Xl/mgld Gz1NEEentFNIeC5htnBX797PJldqawHl6OYax/+6gVZyeLPYfbNYtTGy30fQIvcz vdIR/KCR2XzHn8+xah1zga5Ey/8LAXpgoYY9Pu3J3HWFRTV35laUe0nZ8EQ1mW3q nGritp0453RFJgD1wHewp1CgJx9lAixPAMPZ5BCOqOxsCxyalbvefWc6u/cS3zJM KEeKChyF6k5VqaW4A9jVeKq+HoGfngYjFJmELeKG4vK1d2UwMeDZRJ2IfkKej7xK 0awM0E0LO95H0mWEPhI3bmNbcfOLiJ4TIdWcr/sztF8Vv7fxKkK67Bwk4NTYmyPv sgFZMEyw0eFYNf8/0j9FCATu7AgmbF3yes4vExuAy0cgZaiNxOxaAspRM2A8Tmdf WWiAIsS6ZYwp6L1Gm6Rva+GRB15I3wevxOuEJ4kTsVVgvzgLQ+N6Fn5H5g2zgb1Q hgRlJx6ivyRpoaJhbBB7tqNsK38lQ53i0DHQ21jkBHEPFmRzLnvC+D205Dz3tQK5 kwPAGOCbxoiQbqzhY4NOm75ZPxzy8OW7ygjow0HaX6fgv9Y9n9s= =+maf -----END PGP SIGNATURE----- Merge tag 'zstd-linus-v6.15-rc1' of https://github.com/terrelln/linux Pull zstd updates from Nick Terrell: "Update zstd to the latest upstream release v1.5.7. The two major motivations for updating Zstandard are to keep the code up to date, and to expose API's needed by Intel for the QAT compression accelerator. Imported cleanly from the upstream tag v1.5.7-kernel, which is signed by upstream's signing key EF8FE99528B52FFD" Link: https://github.com/facebook/zstd/releases/tag/v1.5.7 Link: https://github.com/facebook/zstd/releases/tag/v1.5.7-kernel Link: https://keyserver.ubuntu.com/pks/lookup?search=EF8FE99528B52FFD&fingerprint=on&op=index * tag 'zstd-linus-v6.15-rc1' of https://github.com/terrelln/linux: zstd: Import upstream v1.5.7 |
||
|
Linus Torvalds
|
ee6740fd34 |
CRC updates for 6.15
Another set of improvements to the kernel's CRC (cyclic redundancy
check) code:
- Rework the CRC64 library functions to be directly optimized, like what
I did last cycle for the CRC32 and CRC-T10DIF library functions.
- Rewrite the x86 PCLMULQDQ-optimized CRC code, and add VPCLMULQDQ
support and acceleration for crc64_be and crc64_nvme.
- Rewrite the riscv Zbc-optimized CRC code, and add acceleration for
crc_t10dif, crc64_be, and crc64_nvme.
- Remove crc_t10dif and crc64_rocksoft from the crypto API, since they
are no longer needed there.
- Rename crc64_rocksoft to crc64_nvme, as the old name was incorrect.
- Add kunit test cases for crc64_nvme and crc7.
- Eliminate redundant functions for calculating the Castagnoli CRC32,
settling on just crc32c().
- Remove unnecessary prompts from some of the CRC kconfig options.
- Further optimize the x86 crc32c code.
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Merge tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux
Pull CRC updates from Eric Biggers:
"Another set of improvements to the kernel's CRC (cyclic redundancy
check) code:
- Rework the CRC64 library functions to be directly optimized, like
what I did last cycle for the CRC32 and CRC-T10DIF library
functions
- Rewrite the x86 PCLMULQDQ-optimized CRC code, and add VPCLMULQDQ
support and acceleration for crc64_be and crc64_nvme
- Rewrite the riscv Zbc-optimized CRC code, and add acceleration for
crc_t10dif, crc64_be, and crc64_nvme
- Remove crc_t10dif and crc64_rocksoft from the crypto API, since
they are no longer needed there
- Rename crc64_rocksoft to crc64_nvme, as the old name was incorrect
- Add kunit test cases for crc64_nvme and crc7
- Eliminate redundant functions for calculating the Castagnoli CRC32,
settling on just crc32c()
- Remove unnecessary prompts from some of the CRC kconfig options
- Further optimize the x86 crc32c code"
* tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (36 commits)
x86/crc: drop the avx10_256 functions and rename avx10_512 to avx512
lib/crc: remove unnecessary prompt for CONFIG_CRC64
lib/crc: remove unnecessary prompt for CONFIG_LIBCRC32C
lib/crc: remove unnecessary prompt for CONFIG_CRC8
lib/crc: remove unnecessary prompt for CONFIG_CRC7
lib/crc: remove unnecessary prompt for CONFIG_CRC4
lib/crc7: unexport crc7_be_syndrome_table
lib/crc_kunit.c: update comment in crc_benchmark()
lib/crc_kunit.c: add test and benchmark for crc7_be()
x86/crc32: optimize tail handling for crc32c short inputs
riscv/crc64: add Zbc optimized CRC64 functions
riscv/crc-t10dif: add Zbc optimized CRC-T10DIF function
riscv/crc32: reimplement the CRC32 functions using new template
riscv/crc: add "template" for Zbc optimized CRC functions
x86/crc: add ANNOTATE_NOENDBR to suppress objtool warnings
x86/crc32: improve crc32c_arch() code generation with clang
x86/crc64: implement crc64_be and crc64_nvme using new template
x86/crc-t10dif: implement crc_t10dif using new template
x86/crc32: implement crc32_le using new template
x86/crc: add "template" for [V]PCLMULQDQ based CRC functions
...
|
||
|
Linus Torvalds
|
317a76a996 |
Updates for the VDSO infrastructure:
- Consolidate the VDSO storage
The VDSO data storage and data layout has been largely architecture
specific for historical reasons. That increases the maintenance effort
and causes inconsistencies over and over.
There is no real technical reason for architecture specific layouts and
implementations. The architecture specific details can easily be
integrated into a generic layout, which also reduces the amount of
duplicated code for managing the mappings.
Convert all architectures over to a unified layout and common mapping
infrastructure. This splits the VDSO data layout into subsystem
specific blocks, timekeeping, random and architecture parts, which
provides a better structure and allows to improve and update the
functionalities without conflict and interaction.
- Rework the timekeeping data storage
The current implementation is designed for exposing system timekeeping
accessors, which was good enough at the time when it was designed.
PTP and Time Sensitive Networking (TSN) change that as there are
requirements to expose independent PTP clocks, which are not related to
system timekeeping.
Replace the monolithic data storage by a structured layout, which
allows to add support for independent PTP clocks on top while reusing
both the data structures and the time accessor implementations.
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Merge tag 'timers-vdso-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull VDSO infrastructure updates from Thomas Gleixner:
- Consolidate the VDSO storage
The VDSO data storage and data layout has been largely architecture
specific for historical reasons. That increases the maintenance
effort and causes inconsistencies over and over.
There is no real technical reason for architecture specific layouts
and implementations. The architecture specific details can easily be
integrated into a generic layout, which also reduces the amount of
duplicated code for managing the mappings.
Convert all architectures over to a unified layout and common mapping
infrastructure. This splits the VDSO data layout into subsystem
specific blocks, timekeeping, random and architecture parts, which
provides a better structure and allows to improve and update the
functionalities without conflict and interaction.
- Rework the timekeeping data storage
The current implementation is designed for exposing system
timekeeping accessors, which was good enough at the time when it was
designed.
PTP and Time Sensitive Networking (TSN) change that as there are
requirements to expose independent PTP clocks, which are not related
to system timekeeping.
Replace the monolithic data storage by a structured layout, which
allows to add support for independent PTP clocks on top while reusing
both the data structures and the time accessor implementations.
* tag 'timers-vdso-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (55 commits)
sparc/vdso: Always reject undefined references during linking
x86/vdso: Always reject undefined references during linking
vdso: Rework struct vdso_time_data and introduce struct vdso_clock
vdso: Move architecture related data before basetime data
powerpc/vdso: Prepare introduction of struct vdso_clock
arm64/vdso: Prepare introduction of struct vdso_clock
x86/vdso: Prepare introduction of struct vdso_clock
time/namespace: Prepare introduction of struct vdso_clock
vdso/namespace: Rename timens_setup_vdso_data() to reflect new vdso_clock struct
vdso/vsyscall: Prepare introduction of struct vdso_clock
vdso/gettimeofday: Prepare helper functions for introduction of struct vdso_clock
vdso/gettimeofday: Prepare do_coarse_timens() for introduction of struct vdso_clock
vdso/gettimeofday: Prepare do_coarse() for introduction of struct vdso_clock
vdso/gettimeofday: Prepare do_hres_timens() for introduction of struct vdso_clock
vdso/gettimeofday: Prepare do_hres() for introduction of struct vdso_clock
vdso/gettimeofday: Prepare introduction of struct vdso_clock
vdso/helpers: Prepare introduction of struct vdso_clock
vdso/datapage: Define vdso_clock to prepare for multiple PTP clocks
vdso: Make vdso_time_data cacheline aligned
arm64: Make asm/cache.h compatible with vDSO
...
|
||
|
Linus Torvalds
|
a50b4fe095 |
A treewide hrtimer timer cleanup
hrtimers are initialized with hrtimer_init() and a subsequent store to the callback pointer. This turned out to be suboptimal for the upcoming Rust integration and is obviously a silly implementation to begin with. This cleanup replaces the hrtimer_init(T); T->function = cb; sequence with hrtimer_setup(T, cb); The conversion was done with Coccinelle and a few manual fixups. Once the conversion has completely landed in mainline, hrtimer_init() will be removed and the hrtimer::function becomes a private member. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmff5jQTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoVvRD/wKtuwmiA66NJFgXC0qVq82A6fO3bY8 GBdbfysDJIbqGu5PTcULTbJ8qkqv3jeLUv6CcXvS4sZ7y/uJQl2lzf8yrD/0bbwc rLI6sHiPSZmK93kNVN4X5H7kvt7cE/DYC9nnEOgK3BY5FgKc4n9887d4aVBhL8Lv ODwVXvZ+xi351YCj7qRyPU24zt/p4tkkT1o2k4a0HBluqLI0D+V20fke9IERUL8r d1uWKlcn0TqYDesE8HXKIhbst3gx52rMJrXBJDHwFmG6v8Pj1fkTXCVpPo8QcBz8 OTVkpomN9f/Tx4+GZwhZOF86LhLL3OhxD6pT7JhFCXdmSGv+Ez8uyk1YZysM/XpV Juy/1yAcBpDIDkmhMFGdAAn48Nn9Fotty0r4je60zSEp1d/4QMXcFme29qr2JTUE iWnQ/HD6DxUjVHqy7CYvvo26Xegg1C7qgyOVt4PYZwAM1VKF5P3kzYTb4SAdxtop Tpji1sfW9QV08jqMNo6XntD32DSP9S2HqjO9LwBw700jnx2jjJ35fcJs6iodMOUn gckIZLMn3L0OoglPdyA5O7SNTbKE7aFiRKdnT/cJtR3Fa39Qu27CwC5gfiyuie9I Q+LG8GLuYSBHXAR+PBK4GWlzJ7Dn8k3eqmbnLeKpRMsU6ZzcttgA64xhaviN2wN0 iJbvLJeisXr3GA== =bYAX -----END PGP SIGNATURE----- Merge tag 'timers-cleanups-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer cleanups from Thomas Gleixner: "A treewide hrtimer timer cleanup hrtimers are initialized with hrtimer_init() and a subsequent store to the callback pointer. This turned out to be suboptimal for the upcoming Rust integration and is obviously a silly implementation to begin with. This cleanup replaces the hrtimer_init(T); T->function = cb; sequence with hrtimer_setup(T, cb); The conversion was done with Coccinelle and a few manual fixups. Once the conversion has completely landed in mainline, hrtimer_init() will be removed and the hrtimer::function becomes a private member" * tag 'timers-cleanups-2025-03-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (100 commits) wifi: rt2x00: Switch to use hrtimer_update_function() io_uring: Use helper function hrtimer_update_function() serial: xilinx_uartps: Use helper function hrtimer_update_function() ASoC: fsl: imx-pcm-fiq: Switch to use hrtimer_setup() RDMA: Switch to use hrtimer_setup() virtio: mem: Switch to use hrtimer_setup() drm/vmwgfx: Switch to use hrtimer_setup() drm/xe/oa: Switch to use hrtimer_setup() drm/vkms: Switch to use hrtimer_setup() drm/msm: Switch to use hrtimer_setup() drm/i915/request: Switch to use hrtimer_setup() drm/i915/uncore: Switch to use hrtimer_setup() drm/i915/pmu: Switch to use hrtimer_setup() drm/i915/perf: Switch to use hrtimer_setup() drm/i915/gvt: Switch to use hrtimer_setup() drm/i915/huc: Switch to use hrtimer_setup() drm/amdgpu: Switch to use hrtimer_setup() stm class: heartbeat: Switch to use hrtimer_setup() i2c: Switch to use hrtimer_setup() iio: Switch to use hrtimer_setup() ... |
||
|
Jing Su
|
3a17f23f7c |
dql: Fix dql->limit value when reset.
Executing dql_reset after setting a non-zero value for limit_min can lead to an unreasonable situation where dql->limit is less than dql->limit_min. For instance, after setting /sys/class/net/eth*/queues/tx-0/byte_queue_limits/limit_min, an ifconfig down/up operation might cause the ethernet driver to call netdev_tx_reset_queue, which in turn invokes dql_reset. In this case, dql->limit is reset to 0 while dql->limit_min remains non-zero value, which is unexpected. The limit should always be greater than or equal to limit_min. Signed-off-by: Jing Su <jingsusu@didiglobal.com> Link: https://patch.msgid.link/Z9qHD1s/NEuQBdgH@pilot-ThinkCentre-M930t-N000 Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Yi Liu
|
7fe6b98716 |
ida: Add ida_find_first_range()
There is no helpers for user to check if a given ID is allocated or not,
neither a helper to loop all the allocated IDs in an IDA and do something
for cleanup. With the two needs, a helper to get the lowest allocated ID
of a range and two variants based on it.
Caller can check if a given ID is allocated or not by:
bool ida_exists(struct ida *ida, unsigned int id)
Caller can iterate all allocated IDs by:
int id;
while ((id = ida_find_first(&pasid_ida)) >= 0) {
//anything to do with the allocated ID
ida_free(pasid_ida, pasid);
}
Link: https://patch.msgid.link/r/20250321180143.8468-2-yi.l.liu@intel.com
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Suggested-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
|
||
|
Linus Torvalds
|
e34c38057a |
[ Merge note: this pull request depends on you having merged
two locking commits in the locking tree,
part of the locking-core-2025-03-22 pull request. ]
x86 CPU features support:
- Generate the <asm/cpufeaturemasks.h> header based on build config
(H. Peter Anvin, Xin Li)
- x86 CPUID parsing updates and fixes (Ahmed S. Darwish)
- Introduce the 'setcpuid=' boot parameter (Brendan Jackman)
- Enable modifying CPU bug flags with '{clear,set}puid='
(Brendan Jackman)
- Utilize CPU-type for CPU matching (Pawan Gupta)
- Warn about unmet CPU feature dependencies (Sohil Mehta)
- Prepare for new Intel Family numbers (Sohil Mehta)
Percpu code:
- Standardize & reorganize the x86 percpu layout and
related cleanups (Brian Gerst)
- Convert the stackprotector canary to a regular percpu
variable (Brian Gerst)
- Add a percpu subsection for cache hot data (Brian Gerst)
- Unify __pcpu_op{1,2}_N() macros to __pcpu_op_N() (Uros Bizjak)
- Construct __percpu_seg_override from __percpu_seg (Uros Bizjak)
MM:
- Add support for broadcast TLB invalidation using AMD's INVLPGB instruction
(Rik van Riel)
- Rework ROX cache to avoid writable copy (Mike Rapoport)
- PAT: restore large ROX pages after fragmentation
(Kirill A. Shutemov, Mike Rapoport)
- Make memremap(MEMREMAP_WB) map memory as encrypted by default
(Kirill A. Shutemov)
- Robustify page table initialization (Kirill A. Shutemov)
- Fix flush_tlb_range() when used for zapping normal PMDs (Jann Horn)
- Clear _PAGE_DIRTY for kernel mappings when we clear _PAGE_RW
(Matthew Wilcox)
KASLR:
- x86/kaslr: Reduce KASLR entropy on most x86 systems,
to support PCI BAR space beyond the 10TiB region
(CONFIG_PCI_P2PDMA=y) (Balbir Singh)
CPU bugs:
- Implement FineIBT-BHI mitigation (Peter Zijlstra)
- speculation: Simplify and make CALL_NOSPEC consistent (Pawan Gupta)
- speculation: Add a conditional CS prefix to CALL_NOSPEC (Pawan Gupta)
- RFDS: Exclude P-only parts from the RFDS affected list (Pawan Gupta)
System calls:
- Break up entry/common.c (Brian Gerst)
- Move sysctls into arch/x86 (Joel Granados)
Intel LAM support updates: (Maciej Wieczor-Retman)
- selftests/lam: Move cpu_has_la57() to use cpuinfo flag
- selftests/lam: Skip test if LAM is disabled
- selftests/lam: Test get_user() LAM pointer handling
AMD SMN access updates:
- Add SMN offsets to exclusive region access (Mario Limonciello)
- Add support for debugfs access to SMN registers (Mario Limonciello)
- Have HSMP use SMN through AMD_NODE (Yazen Ghannam)
Power management updates: (Patryk Wlazlyn)
- Allow calling mwait_play_dead with an arbitrary hint
- ACPI/processor_idle: Add FFH state handling
- intel_idle: Provide the default enter_dead() handler
- Eliminate mwait_play_dead_cpuid_hint()
Bootup:
Build system:
- Raise the minimum GCC version to 8.1 (Brian Gerst)
- Raise the minimum LLVM version to 15.0.0
(Nathan Chancellor)
Kconfig: (Arnd Bergmann)
- Add cmpxchg8b support back to Geode CPUs
- Drop 32-bit "bigsmp" machine support
- Rework CONFIG_GENERIC_CPU compiler flags
- Drop configuration options for early 64-bit CPUs
- Remove CONFIG_HIGHMEM64G support
- Drop CONFIG_SWIOTLB for PAE
- Drop support for CONFIG_HIGHPTE
- Document CONFIG_X86_INTEL_MID as 64-bit-only
- Remove old STA2x11 support
- Only allow CONFIG_EISA for 32-bit
Headers:
- Replace __ASSEMBLY__ with __ASSEMBLER__ in UAPI and non-UAPI headers
(Thomas Huth)
Assembly code & machine code patching:
- x86/alternatives: Simplify alternative_call() interface (Josh Poimboeuf)
- x86/alternatives: Simplify callthunk patching (Peter Zijlstra)
- KVM: VMX: Use named operands in inline asm (Josh Poimboeuf)
- x86/hyperv: Use named operands in inline asm (Josh Poimboeuf)
- x86/traps: Cleanup and robustify decode_bug() (Peter Zijlstra)
- x86/kexec: Merge x86_32 and x86_64 code using macros from <asm/asm.h>
(Uros Bizjak)
- Use named operands in inline asm (Uros Bizjak)
- Improve performance by using asm_inline() for atomic locking instructions
(Uros Bizjak)
Earlyprintk:
- Harden early_serial (Peter Zijlstra)
NMI handler:
- Add an emergency handler in nmi_desc & use it in nmi_shootdown_cpus()
(Waiman Long)
Miscellaneous fixes and cleanups:
- by Ahmed S. Darwish, Andy Shevchenko, Ard Biesheuvel,
Artem Bityutskiy, Borislav Petkov, Brendan Jackman, Brian Gerst,
Dan Carpenter, Dr. David Alan Gilbert, H. Peter Anvin,
Ingo Molnar, Josh Poimboeuf, Kevin Brodsky, Mike Rapoport,
Lukas Bulwahn, Maciej Wieczor-Retman, Max Grobecker,
Patryk Wlazlyn, Pawan Gupta, Peter Zijlstra,
Philip Redkin, Qasim Ijaz, Rik van Riel, Thomas Gleixner,
Thorsten Blum, Tom Lendacky, Tony Luck, Uros Bizjak,
Vitaly Kuznetsov, Xin Li, liuye.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core x86 updates from Ingo Molnar:
"x86 CPU features support:
- Generate the <asm/cpufeaturemasks.h> header based on build config
(H. Peter Anvin, Xin Li)
- x86 CPUID parsing updates and fixes (Ahmed S. Darwish)
- Introduce the 'setcpuid=' boot parameter (Brendan Jackman)
- Enable modifying CPU bug flags with '{clear,set}puid=' (Brendan
Jackman)
- Utilize CPU-type for CPU matching (Pawan Gupta)
- Warn about unmet CPU feature dependencies (Sohil Mehta)
- Prepare for new Intel Family numbers (Sohil Mehta)
Percpu code:
- Standardize & reorganize the x86 percpu layout and related cleanups
(Brian Gerst)
- Convert the stackprotector canary to a regular percpu variable
(Brian Gerst)
- Add a percpu subsection for cache hot data (Brian Gerst)
- Unify __pcpu_op{1,2}_N() macros to __pcpu_op_N() (Uros Bizjak)
- Construct __percpu_seg_override from __percpu_seg (Uros Bizjak)
MM:
- Add support for broadcast TLB invalidation using AMD's INVLPGB
instruction (Rik van Riel)
- Rework ROX cache to avoid writable copy (Mike Rapoport)
- PAT: restore large ROX pages after fragmentation (Kirill A.
Shutemov, Mike Rapoport)
- Make memremap(MEMREMAP_WB) map memory as encrypted by default
(Kirill A. Shutemov)
- Robustify page table initialization (Kirill A. Shutemov)
- Fix flush_tlb_range() when used for zapping normal PMDs (Jann Horn)
- Clear _PAGE_DIRTY for kernel mappings when we clear _PAGE_RW
(Matthew Wilcox)
KASLR:
- x86/kaslr: Reduce KASLR entropy on most x86 systems, to support PCI
BAR space beyond the 10TiB region (CONFIG_PCI_P2PDMA=y) (Balbir
Singh)
CPU bugs:
- Implement FineIBT-BHI mitigation (Peter Zijlstra)
- speculation: Simplify and make CALL_NOSPEC consistent (Pawan Gupta)
- speculation: Add a conditional CS prefix to CALL_NOSPEC (Pawan
Gupta)
- RFDS: Exclude P-only parts from the RFDS affected list (Pawan
Gupta)
System calls:
- Break up entry/common.c (Brian Gerst)
- Move sysctls into arch/x86 (Joel Granados)
Intel LAM support updates: (Maciej Wieczor-Retman)
- selftests/lam: Move cpu_has_la57() to use cpuinfo flag
- selftests/lam: Skip test if LAM is disabled
- selftests/lam: Test get_user() LAM pointer handling
AMD SMN access updates:
- Add SMN offsets to exclusive region access (Mario Limonciello)
- Add support for debugfs access to SMN registers (Mario Limonciello)
- Have HSMP use SMN through AMD_NODE (Yazen Ghannam)
Power management updates: (Patryk Wlazlyn)
- Allow calling mwait_play_dead with an arbitrary hint
- ACPI/processor_idle: Add FFH state handling
- intel_idle: Provide the default enter_dead() handler
- Eliminate mwait_play_dead_cpuid_hint()
Build system:
- Raise the minimum GCC version to 8.1 (Brian Gerst)
- Raise the minimum LLVM version to 15.0.0 (Nathan Chancellor)
Kconfig: (Arnd Bergmann)
- Add cmpxchg8b support back to Geode CPUs
- Drop 32-bit "bigsmp" machine support
- Rework CONFIG_GENERIC_CPU compiler flags
- Drop configuration options for early 64-bit CPUs
- Remove CONFIG_HIGHMEM64G support
- Drop CONFIG_SWIOTLB for PAE
- Drop support for CONFIG_HIGHPTE
- Document CONFIG_X86_INTEL_MID as 64-bit-only
- Remove old STA2x11 support
- Only allow CONFIG_EISA for 32-bit
Headers:
- Replace __ASSEMBLY__ with __ASSEMBLER__ in UAPI and non-UAPI
headers (Thomas Huth)
Assembly code & machine code patching:
- x86/alternatives: Simplify alternative_call() interface (Josh
Poimboeuf)
- x86/alternatives: Simplify callthunk patching (Peter Zijlstra)
- KVM: VMX: Use named operands in inline asm (Josh Poimboeuf)
- x86/hyperv: Use named operands in inline asm (Josh Poimboeuf)
- x86/traps: Cleanup and robustify decode_bug() (Peter Zijlstra)
- x86/kexec: Merge x86_32 and x86_64 code using macros from
<asm/asm.h> (Uros Bizjak)
- Use named operands in inline asm (Uros Bizjak)
- Improve performance by using asm_inline() for atomic locking
instructions (Uros Bizjak)
Earlyprintk:
- Harden early_serial (Peter Zijlstra)
NMI handler:
- Add an emergency handler in nmi_desc & use it in
nmi_shootdown_cpus() (Waiman Long)
Miscellaneous fixes and cleanups:
- by Ahmed S. Darwish, Andy Shevchenko, Ard Biesheuvel, Artem
Bityutskiy, Borislav Petkov, Brendan Jackman, Brian Gerst, Dan
Carpenter, Dr. David Alan Gilbert, H. Peter Anvin, Ingo Molnar,
Josh Poimboeuf, Kevin Brodsky, Mike Rapoport, Lukas Bulwahn, Maciej
Wieczor-Retman, Max Grobecker, Patryk Wlazlyn, Pawan Gupta, Peter
Zijlstra, Philip Redkin, Qasim Ijaz, Rik van Riel, Thomas Gleixner,
Thorsten Blum, Tom Lendacky, Tony Luck, Uros Bizjak, Vitaly
Kuznetsov, Xin Li, liuye"
* tag 'x86-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (211 commits)
zstd: Increase DYNAMIC_BMI2 GCC version cutoff from 4.8 to 11.0 to work around compiler segfault
x86/asm: Make asm export of __ref_stack_chk_guard unconditional
x86/mm: Only do broadcast flush from reclaim if pages were unmapped
perf/x86/intel, x86/cpu: Replace Pentium 4 model checks with VFM ones
perf/x86/intel, x86/cpu: Simplify Intel PMU initialization
x86/headers: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-UAPI headers
x86/headers: Replace __ASSEMBLY__ with __ASSEMBLER__ in UAPI headers
x86/locking/atomic: Improve performance by using asm_inline() for atomic locking instructions
x86/asm: Use asm_inline() instead of asm() in clwb()
x86/asm: Use CLFLUSHOPT and CLWB mnemonics in <asm/special_insns.h>
x86/hweight: Use asm_inline() instead of asm()
x86/hweight: Use ASM_CALL_CONSTRAINT in inline asm()
x86/hweight: Use named operands in inline asm()
x86/stackprotector/64: Only export __ref_stack_chk_guard on CONFIG_SMP
x86/head/64: Avoid Clang < 17 stack protector in startup code
x86/kexec: Merge x86_32 and x86_64 code using macros from <asm/asm.h>
x86/runtime-const: Add the RUNTIME_CONST_PTR assembly macro
x86/cpu/intel: Limit the non-architectural constant_tsc model checks
x86/mm/pat: Replace Intel x86_model checks with VFM ones
x86/cpu/intel: Fix fast string initialization for extended Families
...
|
||
|
Linus Torvalds
|
32b22538be |
Scheduler updates for v6.15:
[ Merge note, these two commits are identical:
-
|
||
|
Linus Torvalds
|
5a658afd46 |
Objtool changes for v6.15:
- The biggest change is the new option to automatically fail
the build on objtool warnings: CONFIG_OBJTOOL_WERROR.
While there are no currently known unfixed false positives
left, such an expansion in the severity of objtool warnings
inevitably creates a risk of build failures, so it's disabled by
default and depends on !COMPILE_TEST, so it shouldn't be enabled
on allyesconfig/allmodconfig builds and won't be forced on people
who just accept build-time defaults in 'make oldconfig'.
While the option is strongly recommended, only people who enable
it explicitly should see it.
(Josh Poimboeuf)
- Disable branch profiling in noinstr code with a broad
brush that includes all of arch/x86/ and kernel/sched/. (Josh Poimboeuf)
- Create backup object files on objtool errors and print exact
objtool arguments to make failure analysis easier (Josh Poimboeuf)
- Improve noreturn handling (Josh Poimboeuf)
- Improve rodata handling (Tiezhu Yang)
- Support jump tables, switch tables and goto tables on LoongArch (Tiezhu Yang)
- Misc cleanups and fixes (Josh Poimboeuf, David Engraf, Ingo Molnar)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Ingo Molnar:
- The biggest change is the new option to automatically fail the build
on objtool warnings: CONFIG_OBJTOOL_WERROR.
While there are no currently known unfixed false positives left, such
an expansion in the severity of objtool warnings inevitably creates a
risk of build failures, so it's disabled by default and depends on
!COMPILE_TEST, so it shouldn't be enabled on
allyesconfig/allmodconfig builds and won't be forced on people who
just accept build-time defaults in 'make oldconfig'.
While the option is strongly recommended, only people who enable it
explicitly should see it.
(Josh Poimboeuf)
- Disable branch profiling in noinstr code with a broad brush that
includes all of arch/x86/ and kernel/sched/. (Josh Poimboeuf)
- Create backup object files on objtool errors and print exact objtool
arguments to make failure analysis easier (Josh Poimboeuf)
- Improve noreturn handling (Josh Poimboeuf)
- Improve rodata handling (Tiezhu Yang)
- Support jump tables, switch tables and goto tables on LoongArch
(Tiezhu Yang)
- Misc cleanups and fixes (Josh Poimboeuf, David Engraf, Ingo Molnar)
* tag 'objtool-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (22 commits)
tracing: Disable branch profiling in noinstr code
objtool: Use O_CREAT with explicit mode mask
objtool: Add CONFIG_OBJTOOL_WERROR
objtool: Create backup on error and print args
objtool: Change "warning:" to "error:" for --Werror
objtool: Add --Werror option
objtool: Add --output option
objtool: Upgrade "Linked object detected" warning to error
objtool: Consolidate option validation
objtool: Remove --unret dependency on --rethunk
objtool: Increase per-function WARN_FUNC() rate limit
objtool: Update documentation
objtool: Improve __noreturn annotation warning
objtool: Fix error handling inconsistencies in check()
x86/traps: Make exc_double_fault() consistently noreturn
LoongArch: Enable jump table for objtool
objtool/LoongArch: Add support for goto table
objtool/LoongArch: Add support for switch table
objtool: Handle PC relative relocation type
objtool: Handle different entry size of rodata
...
|
||
|
Linus Torvalds
|
2f2d529458 |
bitmap changes for 6.15
This includes: - cpumask_next_wrap() rework from me; - GENMASK() simplification from I Hsin; - rust bindings for cpumasks from Viresh and me; - scattered cleanups from Andy, Tamir, Vincent, Ignacio and Joel. -----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEEi8GdvG6xMhdgpu/4sUSA/TofvsgFAmfhicUACgkQsUSA/Tof vsiT1Av/TFpTFPcfb0/U6zTjhphqSkhCqBN4JcT+Qh1pyFN3Q8xh7FIRjqm6PoWb wypQTrsOuS1UImfxj2PkHPiagDHz3LBWRJ1WCBZPF3FgZaFdOtVDObn91APaX4Jz K7B2eghnDLk74+eV3aBLVCPgdFPm4Og+3W2J9loWDHYNBrlgQX/3T8gZzJcIzDxk 8jDiy84cGQweW3K6VDr7WGb/gDBTNXKByFig4+rzuW8X/VcUB1wZi1lHqTL3yBMm hXGsa8/VFLVKpRhZxx7PeTiXF+Wp4Tu7iyCuLVK9F9P9pY4GBZ9KV69yaeHLwlwF P4eA3Lj1KvtwmZYDT19lB8V0El7nZzcTHtmSgII8JEniWvuVQjjARicIqFqh6zmX QaLOt/gfGT/tr9nPzsFMgQxHV0ocibqWmM0gZyfEDsqIX0ynSh1fbMf52PrbBBSX aOaVV55HWIjHzLPzqvVee8JMaCwn4hNDrVaWItedQzZkf8aXKLk/GUWYaaEwQ8yY N7D3sXbT =Bm5k -----END PGP SIGNATURE----- Merge tag 'bitmap-for-6.15' of https://github.com/norov/linux Pull bitmap updates from Yury Norov: - cpumask_next_wrap() rework (me) - GENMASK() simplification (I Hsin) - rust bindings for cpumasks (Viresh and me) - scattered cleanups (Andy, Tamir, Vincent, Ignacio and Joel) * tag 'bitmap-for-6.15' of https://github.com/norov/linux: (22 commits) cpumask: align text in comment riscv: fix test_and_{set,clear}_bit ordering documentation treewide: fix typo 'unsigned __init128' -> 'unsigned __int128' MAINTAINERS: add rust bindings entry for bitmap API rust: Add cpumask helpers uapi: Revert "bitops: avoid integer overflow in GENMASK(_ULL)" cpumask: drop cpumask_next_wrap_old() PCI: hv: Switch hv_compose_multi_msi_req_get_cpu() to using cpumask_next_wrap() scsi: lpfc: rework lpfc_next_{online,present}_cpu() scsi: lpfc: switch lpfc_irq_rebalance() to using cpumask_next_wrap() s390: switch stop_machine_yield() to using cpumask_next_wrap() padata: switch padata_find_next() to using cpumask_next_wrap() cpumask: use cpumask_next_wrap() where appropriate cpumask: re-introduce cpumask_next{,_and}_wrap() cpumask: deprecate cpumask_next_wrap() powerpc/xmon: simplify xmon_batch_next_cpu() ibmvnic: simplify ibmvnic_set_queue_affinity() virtio_net: simplify virtnet_set_affinity() objpool: rework objpool_pop() cpumask: add for_each_{possible,online}_cpu_wrap ... |
||
|
Linus Torvalds
|
05b00ffd7a |
slab updates for 6.15
-----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEe7vIQRWZI0iWSE3xu+CwddJFiJoFAmfb4r0ACgkQu+CwddJF iJq6NQf/WNEQAoRY1DEeQiBAvixTYry0j/w1dumpValvt/lybccMwwhWho5i17/o 2J4nif5L5O6D+jZWyz76fx2bcn7GjhteiKtzuVI0mSdDXyYLBLVGa9dMrE1/0kxy 51HnldCLfNmC3qp0pG2E7j2chsxDbTwz4ZPiEAW9kzpvgfEWmfydejzv5+ROFQm7 gH3vRJ7H5enxp2a52DovBN1JllYK9uxMTM3Pq1L37n9Hm1zIR+swbI/3VhklRN4C nrO6my6GU2+bMQTvPKwuHBIHUH7yS6Z411wCotPmRO0jfLMq/UY5lthgWpqvsC+o XtgULoikQbcd8kts9g71bHSEinwlGw== =whkW -----END PGP SIGNATURE----- Merge tag 'slab-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab Pull slab updates from Vlastimil Babka: - Move the TINY_RCU kvfree_rcu() implementation from RCU to SLAB subsystem and cleanup its integration (Vlastimil Babka) Following the move of the TREE_RCU batching kvfree_rcu() implementation in 6.14, move also the simpler TINY_RCU variant. Refactor the #ifdef guards so that the simple implementation is also used with SLUB_TINY. Remove the need for RCU to recognize fake callback function pointers (__is_kvfree_rcu_offset()) when handling call_rcu() by implementing a callback that calculates the object's address from the embedded rcu_head address without knowing its offset. - Improve kmalloc cache randomization in kvmalloc (GONG Ruiqi) Due to an extra layer of function call, all kvmalloc() allocations used the same set of random caches. Thanks to moving the kvmalloc() implementation to slub.c, this is improved and randomization now works for kvmalloc. - Various improvements to debugging, testing and other cleanups (Hyesoo Yu, Lilith Gkini, Uladzislau Rezki, Matthew Wilcox, Kevin Brodsky, Ye Bin) * tag 'slab-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: slub: Handle freelist cycle in on_freelist() mm/slab: call kmalloc_noprof() unconditionally in kmalloc_array_noprof() slab: Mark large folios for debugging purposes kunit, slub: Add test_kfree_rcu_wq_destroy use case mm, slab: cleanup slab_bug() parameters mm: slub: call WARN() when detecting a slab corruption mm: slub: Print the broken data before restoring them slab: Achieve better kmalloc caches randomization in kvmalloc slab: Adjust placement of __kvmalloc_node_noprof mm/slab: simplify SLAB_* flag handling slab: don't batch kvfree_rcu() with SLUB_TINY rcu, slab: use a regular callback function for kvfree_rcu rcu: remove trace_rcu_kvfree_callback slab, rcu: move TINY_RCU variant of kvfree_rcu() to SLAB |
||
|
Linus Torvalds
|
fc13a78e1f |
hardening updates for v6.15-rc1
- loadpin: remove unsupported MODULE_COMPRESS_NONE (Arulpandiyan Vadivel)
- samples/check-exec: Fix script name (Mickaël Salaün)
- yama: remove needless locking in yama_task_prctl() (Oleg Nesterov)
- lib/string_choices: Sort by function name (R Sundar)
- hardening: Allow default HARDENED_USERCOPY to be set at compile time
(Mel Gorman)
- uaccess: Split out compile-time checks into ucopysize.h
- kbuild: clang: Support building UM with SUBARCH=i386
- x86: Enable i386 FORTIFY_SOURCE on Clang 16+
- ubsan/overflow: Rework integer overflow sanitizer option
- Add missing __nonstring annotations for callers of memtostr*()/strtomem*()
- Add __must_be_noncstr() and have memtostr*()/strtomem*() check for it
- Introduce __nonstring_array for silencing future GCC 15 warnings
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Merge tag 'hardening-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
"As usual, it's scattered changes all over. Patches touching things
outside of our traditional areas in the tree have been Acked by
maintainers or were trivial changes:
- loadpin: remove unsupported MODULE_COMPRESS_NONE (Arulpandiyan
Vadivel)
- samples/check-exec: Fix script name (Mickaël Salaün)
- yama: remove needless locking in yama_task_prctl() (Oleg Nesterov)
- lib/string_choices: Sort by function name (R Sundar)
- hardening: Allow default HARDENED_USERCOPY to be set at compile
time (Mel Gorman)
- uaccess: Split out compile-time checks into ucopysize.h
- kbuild: clang: Support building UM with SUBARCH=i386
- x86: Enable i386 FORTIFY_SOURCE on Clang 16+
- ubsan/overflow: Rework integer overflow sanitizer option
- Add missing __nonstring annotations for callers of
memtostr*()/strtomem*()
- Add __must_be_noncstr() and have memtostr*()/strtomem*() check for
it
- Introduce __nonstring_array for silencing future GCC 15 warnings"
* tag 'hardening-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (26 commits)
compiler_types: Introduce __nonstring_array
hardening: Enable i386 FORTIFY_SOURCE on Clang 16+
x86/build: Remove -ffreestanding on i386 with GCC
ubsan/overflow: Enable ignorelist parsing and add type filter
ubsan/overflow: Enable pattern exclusions
ubsan/overflow: Rework integer overflow sanitizer option to turn on everything
samples/check-exec: Fix script name
yama: don't abuse rcu_read_lock/get_task_struct in yama_task_prctl()
kbuild: clang: Support building UM with SUBARCH=i386
loadpin: remove MODULE_COMPRESS_NONE as it is no longer supported
lib/string_choices: Rearrange functions in sorted order
string.h: Validate memtostr*()/strtomem*() arguments more carefully
compiler.h: Introduce __must_be_noncstr()
nilfs2: Mark on-disk strings as nonstring
uapi: stddef.h: Introduce __kernel_nonstring
x86/tdx: Mark message.bytes as nonstring
string: kunit: Mark nonstring test strings as __nonstring
scsi: qla2xxx: Mark device strings as nonstring
scsi: mpt3sas: Mark device strings as nonstring
scsi: mpi3mr: Mark device strings as nonstring
...
|
||
|
Linus Torvalds
|
06961fbbbd |
move-lib-kunit for v6.15-rc1
- move lib/ selftests into lib/tests/ (Kees Cook, Gabriela Bittencourt,
Luis Felipe Hernandez, Lukas Bulwahn, Tamir Duberstein)
- lib/math: Add int_log test suite (Bruno Sobreira França)
- lib/math: Add Kunit test suite for gcd() (Yu-Chun Lin)
- lib/tests/kfifo_kunit.c: add tests for the kfifo structure (Diego Vieira)
- unicode: refactor selftests into KUnit (Gabriela Bittencourt)
- lib/prime_numbers: convert self-test to KUnit (Tamir Duberstein)
- printf: convert self-test to KUnit (Tamir Duberstein)
- scanf: convert self-test to KUnit (Tamir Duberstein)
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Merge tag 'move-lib-kunit-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull lib kunit selftest move from Kees Cook:
"This is a one-off tree to coordinate the move of selftests out of lib/
and into lib/tests/. A separate tree was used for this to keep the
paths sane with all the work in the same place.
- move lib/ selftests into lib/tests/ (Kees Cook, Gabriela
Bittencourt, Luis Felipe Hernandez, Lukas Bulwahn, Tamir
Duberstein)
- lib/math: Add int_log test suite (Bruno Sobreira França)
- lib/math: Add Kunit test suite for gcd() (Yu-Chun Lin)
- lib/tests/kfifo_kunit.c: add tests for the kfifo structure (Diego
Vieira)
- unicode: refactor selftests into KUnit (Gabriela Bittencourt)
- lib/prime_numbers: convert self-test to KUnit (Tamir Duberstein)
- printf: convert self-test to KUnit (Tamir Duberstein)
- scanf: convert self-test to KUnit (Tamir Duberstein)"
* tag 'move-lib-kunit-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (21 commits)
scanf: break kunit into test cases
scanf: convert self-test to KUnit
scanf: remove redundant debug logs
scanf: implicate test line in failure messages
printf: implicate test line in failure messages
printf: break kunit into test cases
printf: convert self-test to KUnit
kunit/fortify: Replace "volatile" with OPTIMIZER_HIDE_VAR()
kunit/fortify: Expand testing of __compiletime_strlen()
kunit/stackinit: Use fill byte different from Clang i386 pattern
kunit/overflow: Fix DEFINE_FLEX tests for counted_by
selftests: remove reference to prime_numbers.sh
MAINTAINERS: adjust entries in FORTIFY_SOURCE and KERNEL HARDENING
lib/prime_numbers: convert self-test to KUnit
lib/math: Add Kunit test suite for gcd()
unicode: kunit: change tests filename and path
unicode: kunit: refactor selftest to kunit tests
lib/tests/kfifo_kunit.c: add tests for the kfifo structure
lib: Move KUnit tests into tests/ subdirectory
lib/math: Add int_log test suite
...
|
||
|
Linus Torvalds
|
c1c98301ec |
vfs-6.15-rc1.initramfs
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCZ90sHgAKCRCRxhvAZXjc omOhAP42jYMtpeE78b7W5UP8YdpyMVtkbgpDqJYirdKDx9QtCwEA4QKR14SKH4G2 s3fJEh5PbBFzkE7pjPGdTy2S5EfDlAo= =DBbG -----END PGP SIGNATURE----- Merge tag 'vfs-6.15-rc1.initramfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull vfs initramfs updates from Christian Brauner: "This adds basic kunit test coverage for initramfs unpacking and cleans up some buffer handling issues and inefficiencies" * tag 'vfs-6.15-rc1.initramfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: MAINTAINERS: append initramfs files to the VFS section initramfs: avoid static buffer for error message initramfs: fix hardlink hash leak without TRAILER initramfs: reuse name_len for dir mtime tracking initramfs: allocate heap buffers together initramfs: avoid memcpy for hex header fields vsprintf: add simple_strntoul initramfs_test: kunit tests for initramfs unpacking init: add initramfs_internal.h |
||
|
Linus Torvalds
|
99c21beaab |
vfs-6.15-rc1.misc
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Merge tag 'vfs-6.15-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"Features:
- Add CONFIG_DEBUG_VFS infrastucture:
- Catch invalid modes in open
- Use the new debug macros in inode_set_cached_link()
- Use debug-only asserts around fd allocation and install
- Place f_ref to 3rd cache line in struct file to resolve false
sharing
Cleanups:
- Start using anon_inode_getfile_fmode() helper in various places
- Don't take f_lock during SEEK_CUR if exclusion is guaranteed by
f_pos_lock
- Add unlikely() to kcmp()
- Remove legacy ->remount_fs method from ecryptfs after port to the
new mount api
- Remove invalidate_inodes() in favour of evict_inodes()
- Simplify ep_busy_loopER by removing unused argument
- Avoid mmap sem relocks when coredumping with many missing pages
- Inline getname()
- Inline new_inode_pseudo() and de-staticize alloc_inode()
- Dodge an atomic in putname if ref == 1
- Consistently deref the files table with rcu_dereference_raw()
- Dedup handling of struct filename init and refcounts bumps
- Use wq_has_sleeper() in end_dir_add()
- Drop the lock trip around I_NEW wake up in evict()
- Load the ->i_sb pointer once in inode_sb_list_{add,del}
- Predict not reaching the limit in alloc_empty_file()
- Tidy up do_sys_openat2() with likely/unlikely
- Call inode_sb_list_add() outside of inode hash lock
- Sort out fd allocation vs dup2 race commentary
- Turn page_offset() into a wrapper around folio_pos()
- Remove locking in exportfs around ->get_parent() call
- try_lookup_one_len() does not need any locks in autofs
- Fix return type of several functions from long to int in open
- Fix return type of several functions from long to int in ioctls
Fixes:
- Fix watch queue accounting mismatch"
* tag 'vfs-6.15-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (30 commits)
fs: sort out fd allocation vs dup2 race commentary, take 2
fs: call inode_sb_list_add() outside of inode hash lock
fs: tidy up do_sys_openat2() with likely/unlikely
fs: predict not reaching the limit in alloc_empty_file()
fs: load the ->i_sb pointer once in inode_sb_list_{add,del}
fs: drop the lock trip around I_NEW wake up in evict()
fs: use wq_has_sleeper() in end_dir_add()
VFS/autofs: try_lookup_one_len() does not need any locks
fs: dedup handling of struct filename init and refcounts bumps
fs: consistently deref the files table with rcu_dereference_raw()
exportfs: remove locking around ->get_parent() call.
fs: use debug-only asserts around fd allocation and install
fs: dodge an atomic in putname if ref == 1
vfs: Remove invalidate_inodes()
ecryptfs: remove NULL remount_fs from super_operations
watch_queue: fix pipe accounting mismatch
fs: place f_ref to 3rd cache line in struct file to resolve false sharing
epoll: simplify ep_busy_loop by removing always 0 argument
fs: Turn page_offset() into a wrapper around folio_pos()
kcmp: improve performance adding an unlikely hint to task comparisons
...
|
||
|
Masahiro Yamada
|
a7a05b1b27 |
kbuild: deb-pkg: add comment about future removal of KDEB_COMPRESS
'man dpkg-deb' describes as follows:
DPKG_DEB_COMPRESSOR_TYPE
Sets the compressor type to use (since dpkg 1.21.10).
The -Z option overrides this value.
When commit
|
||
|
Josh Poimboeuf
|
2cbb20b008 |
tracing: Disable branch profiling in noinstr code
CONFIG_TRACE_BRANCH_PROFILING inserts a call to ftrace_likely_update() for each use of likely() or unlikely(). That breaks noinstr rules if the affected function is annotated as noinstr. Disable branch profiling for files with noinstr functions. In addition to some individual files, this also includes the entire arch/x86 subtree, as well as the kernel/entry, drivers/cpuidle, and drivers/idle directories, all of which are noinstr-heavy. Due to the nature of how sched binaries are built by combining multiple .c files into one, branch profiling is disabled more broadly across the sched code than would otherwise be needed. This fixes many warnings like the following: vmlinux.o: warning: objtool: do_syscall_64+0x40: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: __rdgsbase_inactive+0x33: call to ftrace_likely_update() leaves .noinstr.text section vmlinux.o: warning: objtool: handle_bug.isra.0+0x198: call to ftrace_likely_update() leaves .noinstr.text section ... Reported-by: Ingo Molnar <mingo@kernel.org> Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/fb94fc9303d48a5ed370498f54500cc4c338eb6d.1742586676.git.jpoimboe@kernel.org |
||
|
Masami Hiramatsu (Google)
|
3cf67d61ff |
hung_task: show the blocker task if the task is hung on mutex
Patch series "hung_task: Dump the blocking task stacktrace", v4.
The hung_task detector is very useful for detecting the lockup. However,
since it only dumps the blocked (uninterruptible sleep) processes, it is
not enough to identify the root cause of that lockup.
For example, if a process holds a mutex and sleep an event in
interruptible state long time, the other processes will wait on the mutex
in uninterruptible state. In this case, the waiter processes are dumped,
but the blocker process is not shown because it is sleep in interruptible
state.
This adds a feature to dump the blocker task which holds a mutex
when detecting a hung task. e.g.
INFO: task cat:115 blocked for more than 122 seconds.
Not tainted 6.14.0-rc3-00003-ga8946be3de00 #156
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:cat state:D stack:13432 pid:115 tgid:115 ppid:106 task_flags:0x400100 flags:0x00000002
Call Trace:
<TASK>
__schedule+0x731/0x960
? schedule_preempt_disabled+0x54/0xa0
schedule+0xb7/0x140
? __mutex_lock+0x51b/0xa60
? __mutex_lock+0x51b/0xa60
schedule_preempt_disabled+0x54/0xa0
__mutex_lock+0x51b/0xa60
read_dummy+0x23/0x70
full_proxy_read+0x6a/0xc0
vfs_read+0xc2/0x340
? __pfx_direct_file_splice_eof+0x10/0x10
? do_sendfile+0x1bd/0x2e0
ksys_read+0x76/0xe0
do_syscall_64+0xe3/0x1c0
? exc_page_fault+0xa9/0x1d0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x4840cd
RSP: 002b:00007ffe99071828 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004840cd
RDX: 0000000000001000 RSI: 00007ffe99071870 RDI: 0000000000000003
RBP: 00007ffe99071870 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000001000000 R11: 0000000000000246 R12: 0000000000001000
R13: 00000000132fd3a0 R14: 0000000000000001 R15: ffffffffffffffff
</TASK>
INFO: task cat:115 is blocked on a mutex likely owned by task cat:114.
task:cat state:S stack:13432 pid:114 tgid:114 ppid:106 task_flags:0x400100 flags:0x00000002
Call Trace:
<TASK>
__schedule+0x731/0x960
? schedule_timeout+0xa8/0x120
schedule+0xb7/0x140
schedule_timeout+0xa8/0x120
? __pfx_process_timeout+0x10/0x10
msleep_interruptible+0x3e/0x60
read_dummy+0x2d/0x70
full_proxy_read+0x6a/0xc0
vfs_read+0xc2/0x340
? __pfx_direct_file_splice_eof+0x10/0x10
? do_sendfile+0x1bd/0x2e0
ksys_read+0x76/0xe0
do_syscall_64+0xe3/0x1c0
? exc_page_fault+0xa9/0x1d0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x4840cd
RSP: 002b:00007ffe3e0147b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004840cd
RDX: 0000000000001000 RSI: 00007ffe3e014800 RDI: 0000000000000003
RBP: 00007ffe3e014800 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000001000000 R11: 0000000000000246 R12: 0000000000001000
R13: 000000001a0a93a0 R14: 0000000000000001 R15: ffffffffffffffff
</TASK>
TBD: We can extend this feature to cover other locks like rwsem and
rt_mutex, but rwsem requires to dump all the tasks which acquire and wait
that rwsem. We can follow the waiter link but the output will be a bit
different compared with mutex case.
This patch (of 2):
The "hung_task" shows a long-time uninterruptible slept task, but most
often, it's blocked on a mutex acquired by another task. Without dumping
such a task, investigating the root cause of the hung task problem is very
difficult.
This introduce task_struct::blocker_mutex to point the mutex lock which
this task is waiting for. Since the mutex has "owner" information, we can
find the owner task and dump it with hung tasks.
Note: the owner can be changed while dumping the owner task, so
this is "likely" the owner of the mutex.
With this change, the hung task shows blocker task's info like below;
INFO: task cat:115 blocked for more than 122 seconds.
Not tainted 6.14.0-rc3-00003-ga8946be3de00 #156
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:cat state:D stack:13432 pid:115 tgid:115 ppid:106 task_flags:0x400100 flags:0x00000002
Call Trace:
<TASK>
__schedule+0x731/0x960
? schedule_preempt_disabled+0x54/0xa0
schedule+0xb7/0x140
? __mutex_lock+0x51b/0xa60
? __mutex_lock+0x51b/0xa60
schedule_preempt_disabled+0x54/0xa0
__mutex_lock+0x51b/0xa60
read_dummy+0x23/0x70
full_proxy_read+0x6a/0xc0
vfs_read+0xc2/0x340
? __pfx_direct_file_splice_eof+0x10/0x10
? do_sendfile+0x1bd/0x2e0
ksys_read+0x76/0xe0
do_syscall_64+0xe3/0x1c0
? exc_page_fault+0xa9/0x1d0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x4840cd
RSP: 002b:00007ffe99071828 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004840cd
RDX: 0000000000001000 RSI: 00007ffe99071870 RDI: 0000000000000003
RBP: 00007ffe99071870 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000001000000 R11: 0000000000000246 R12: 0000000000001000
R13: 00000000132fd3a0 R14: 0000000000000001 R15: ffffffffffffffff
</TASK>
INFO: task cat:115 is blocked on a mutex likely owned by task cat:114.
task:cat state:S stack:13432 pid:114 tgid:114 ppid:106 task_flags:0x400100 flags:0x00000002
Call Trace:
<TASK>
__schedule+0x731/0x960
? schedule_timeout+0xa8/0x120
schedule+0xb7/0x140
schedule_timeout+0xa8/0x120
? __pfx_process_timeout+0x10/0x10
msleep_interruptible+0x3e/0x60
read_dummy+0x2d/0x70
full_proxy_read+0x6a/0xc0
vfs_read+0xc2/0x340
? __pfx_direct_file_splice_eof+0x10/0x10
? do_sendfile+0x1bd/0x2e0
ksys_read+0x76/0xe0
do_syscall_64+0xe3/0x1c0
? exc_page_fault+0xa9/0x1d0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x4840cd
RSP: 002b:00007ffe3e0147b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004840cd
RDX: 0000000000001000 RSI: 00007ffe3e014800 RDI: 0000000000000003
RBP: 00007ffe3e014800 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000001000000 R11: 0000000000000246 R12: 0000000000001000
R13: 000000001a0a93a0 R14: 0000000000000001 R15: ffffffffffffffff
</TASK>
[akpm@linux-foundation.org: implement debug_show_blocker() in C rather than in CPP]
Link: https://lkml.kernel.org/r/174046694331.2194069.15472952050240807469.stgit@mhiramat.tok.corp.google.com
Link: https://lkml.kernel.org/r/174046695384.2194069.16796289525958195643.stgit@mhiramat.tok.corp.google.com
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Waiman Long <longman@redhat.com>
Reviewed-by: Lance Yang <ioworker0@gmail.com>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Anna Schumaker <anna.schumaker@oracle.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Joel Granados <joel.granados@kernel.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tomasz Figa <tfiga@chromium.org>
Cc: Will Deacon <will@kernel.org>
Cc: Yongliang Gao <leonylgao@tencent.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Arnd Bergmann
|
edc8e80bf8 |
crypto: lib/Kconfig - hide library options
Any driver that needs these library functions should already be selecting
the corresponding Kconfig symbols, so there is no real point in making
these visible.
The original patch that made these user selectable described problems
with drivers failing to select the code they use, but for consistency
it's better to always use 'select' on a symbol than to mix it with
'depends on'.
Fixes:
|
||
|
Herbert Xu
|
fc8d5bba61 |
lib/scatterlist: Add SG_MITER_LOCAL and use it
Add kmap_local support to the scatterlist iterator. Use it for all the helper functions in lib/scatterlist. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Ingo Molnar
|
1400c87e6c |
zstd: Increase DYNAMIC_BMI2 GCC version cutoff from 4.8 to 11.0 to work around compiler segfault
Due to pending percpu improvements in -next, GCC9 and GCC10 are
crashing during the build with:
lib/zstd/compress/huf_compress.c:1033:1: internal compiler error: Segmentation fault
1033 | {
| ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-9/README.Bugs> for instructions.
The DYNAMIC_BMI2 feature is a known-challenging feature of
the ZSTD library, with an existing GCC quirk turning it off
for GCC versions below 4.8.
Increase the DYNAMIC_BMI2 version cutoff to GCC 11.0 - GCC 10.5
is the last version known to crash.
Reported-by: Michael Kelley <mhklinux@outlook.com>
Debugged-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: https://lore.kernel.org/r/SN6PR02MB415723FBCD79365E8D72CA5FD4D82@SN6PR02MB4157.namprd02.prod.outlook.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Paolo Abeni
|
f491593394 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.14-rc8). Conflict: tools/testing/selftests/net/Makefile |
||
|
Ingo Molnar
|
b52173065e |
sched/debug: Remove CONFIG_SCHED_DEBUG
For more than a decade, CONFIG_SCHED_DEBUG=y has been enabled in all the major Linux distributions: /boot/config-6.11.0-19-generic:CONFIG_SCHED_DEBUG=y The reason is that while originally CONFIG_SCHED_DEBUG started out as a debugging feature, over the years (decades ...) it has grown various bits of statistics, instrumentation and control knobs that are useful for sysadmin and general software development purposes as well. But within the kernel we still pretend that there's a choice, and sometimes code that is seemingly 'debug only' creates overhead that should be optimized in reality. So make it all official and make CONFIG_SCHED_DEBUG unconditional. Now that all uses of CONFIG_SCHED_DEBUG are removed from the code by previous patches, remove the Kconfig option as well. Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Shrikanth Hegde <sshegde@linux.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Juri Lelli <juri.lelli@redhat.com> Cc: Vincent Guittot <vincent.guittot@linaro.org> Cc: Dietmar Eggemann <dietmar.eggemann@arm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ben Segall <bsegall@google.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Valentin Schneider <vschneid@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20250317104257.3496611-6-mingo@kernel.org |
||
|
Uday Shankar
|
6d6c1ba782 |
net, treewide: define and use MAC_ADDR_STR_LEN
There are a few places in the tree which compute the length of the string representation of a MAC address as 3 * ETH_ALEN - 1. Define a constant for this and use it where relevant. No functionality changes are expected. Signed-off-by: Uday Shankar <ushankar@purestorage.com> Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com> Acked-by: Johannes Berg <johannes@sipsolutions.net> Reviewed-by: Breno Leitao <leitao@debian.org> Reviewed-by: Simon Horman <horms@verge.net.au> Link: https://patch.msgid.link/20250312-netconsole-v6-1-3437933e79b8@purestorage.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
|
Ingo Molnar
|
89771319e0 |
Linux 6.14-rc7
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmfXVtUeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGN/sH/i5423Gt/z51gDjA s4v5Z7GaBJ9zOGBahn2RWFe72zytTqKrEJmMnGfguirs0atD1DtQj4WAP7iFKP+e WyO663X6HF7i5y37ja0Yd4PZc31hwtqzKH8LjBf8f8tTy8UsEVqumdi5A4sS9KTM qm4kTyyVEY9D/s7oRY8ywjDlRJtO6nT0aKMp4kAqNEbrNUYbilT/a0hgXcgSmPyB uIjmjL2fZfutxGI5LgfbaSHCa1ElmhvTvivOMpaAmZSGCRVHCKGgT0CTNnHyn/7C dB145JkRO4ZOUqirCdO4PE/23id3ajq9fcixJGBzAv7c45y+B3JZ1r2kAfKalE8/ qrOKLys= =8r7a -----END PGP SIGNATURE----- Merge tag 'v6.14-rc7' into x86/core, to pick up fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Zi Yan
|
200a89c159 |
mm/filemap: use xas_try_split() in __filemap_add_folio()
Patch series "Minimize xa_node allocation during xarry split", v3.
When splitting a multi-index entry in XArray from order-n to order-m,
existing xas_split_alloc()+xas_split() approach requires 2^(n %
XA_CHUNK_SHIFT) xa_node allocations. But its callers,
__filemap_add_folio() and shmem_split_large_entry(), use at most 1
xa_node. To minimize xa_node allocation and remove the limitation of no
split from order-12 (or above) to order-0 (or anything between 0 and
5)[1], xas_try_split() was added[2], which allocates (n / XA_CHUNK_SHIFT -
m / XA_CHUNK_SHIFT) xa_node. It is used for non-uniform folio split, but
can be used by __filemap_add_folio() and shmem_split_large_entry().
xas_split_alloc() and xas_split() split an order-9 to order-0:
---------------------------------
| | | | | | | | |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| | | | | | | | |
---------------------------------
| | | |
------- --- --- -------
| | ... | |
V V V V
----------- ----------- ----------- -----------
| xa_node | | xa_node | ... | xa_node | | xa_node |
----------- ----------- ----------- -----------
xas_try_split() splits an order-9 to order-0:
---------------------------------
| | | | | | | | |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| | | | | | | | |
---------------------------------
|
|
V
-----------
| xa_node |
-----------
xas_try_split() is designed to be called iteratively with n = m + 1.
xas_try_split_mini_order() is added to minmize the number of calls to
xas_try_split() by telling the caller the next minimal order to split to
instead of n - 1. Splitting order-n to order-m when m= l * XA_CHUNK_SHIFT
does not require xa_node allocation and requires 1 xa_node when n=l *
XA_CHUNK_SHIFT and m = n - 1, so it is OK to use xas_try_split() with n >
m + 1 when no new xa_node is needed.
xfstests quick group test passed on xfs and tmpfs.
[1] https://lore.kernel.org/linux-mm/Z6YX3RznGLUD07Ao@casper.infradead.org/
[2] https://lore.kernel.org/linux-mm/20250226210032.2044041-1-ziy@nvidia.com/
This patch (of 2):
During __filemap_add_folio(), a shadow entry is covering n slots and a
folio covers m slots with m < n is to be added. Instead of splitting all
n slots, only the m slots covered by the folio need to be split and the
remaining n-m shadow entries can be retained with orders ranging from m to
n-1. This method only requires
(n/XA_CHUNK_SHIFT) - (m/XA_CHUNK_SHIFT)
new xa_nodes instead of
(n % XA_CHUNK_SHIFT) * ((n/XA_CHUNK_SHIFT) - (m/XA_CHUNK_SHIFT))
new xa_nodes, compared to the original xas_split_alloc() + xas_split()
one. For example, to insert an order-0 folio when an order-9 shadow entry
is present (assuming XA_CHUNK_SHIFT is 6), 1 xa_node is needed instead of
8.
xas_try_split_min_order() is introduced to reduce the number of calls to
xas_try_split() during split.
Link: https://lkml.kernel.org/r/20250314222113.711703-1-ziy@nvidia.com
Link: https://lkml.kernel.org/r/20250314222113.711703-2-ziy@nvidia.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Kairui Song <kasong@tencent.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Mattew Wilcox <willy@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Kirill A. Shuemov <kirill.shutemov@linux.intel.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Yang Shi <yang@os.amperecomputing.com>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Zi Yan
|
3fec86f8aa |
xarray: add xas_try_split() to split a multi-index entry
Patch series "Buddy allocator like (or non-uniform) folio split", v10.
This patchset adds a new buddy allocator like (or non-uniform) large folio
split from a order-n folio to order-m with m < n. It reduces
1. the total number of after-split folios from 2^(n-m) to n-m+1;
2. the amount of memory needed for multi-index xarray split from 2^(n/6-m/6) to
n/6-m/6, assuming XA_CHUNK_SHIFT=6;
3. keep more large folios after a split from all order-m folios to
order-(n-1) to order-m folios.
For example, to split an order-9 to order-0, folio split generates 10 (or
11 for anonymous memory) folios instead of 512, allocates 1 xa_node
instead of 8, and leaves 1 order-8, 1 order-7, ..., 1 order-1 and 2
order-0 folios (or 4 order-0 for anonymous memory) instead of 512 order-0
folios.
Instead of duplicating existing split_huge_page*() code, __folio_split()
is introduced as the shared backend code for both
split_huge_page_to_list_to_order() and folio_split(). __folio_split() can
support both uniform split and buddy allocator like (or non-uniform)
split. All existing split_huge_page*() users can be gradually converted
to use folio_split() if possible. In this patchset, I converted
truncate_inode_partial_folio() to use folio_split().
xfstests quick group passed for both tmpfs and xfs. I also
semi-replicated Hugh's test[12] and ran it without any issue for almost 24
hours.
This patch (of 8):
A preparation patch for non-uniform folio split, which always split a
folio into half iteratively, and minimal xarray entry split.
Currently, xas_split_alloc() and xas_split() always split all slots from a
multi-index entry. They cost the same number of xa_node as the
to-be-split slots. For example, to split an order-9 entry, which takes
2^(9-6)=8 slots, assuming XA_CHUNK_SHIFT is 6 (!CONFIG_BASE_SMALL), 8
xa_node are needed. Instead xas_try_split() is intended to be used
iteratively to split the order-9 entry into 2 order-8 entries, then split
one order-8 entry, based on the given index, to 2 order-7 entries, ...,
and split one order-1 entry to 2 order-0 entries. When splitting the
order-6 entry and a new xa_node is needed, xas_try_split() will try to
allocate one if possible. As a result, xas_try_split() would only need 1
xa_node instead of 8.
When a new xa_node is needed during the split, xas_try_split() can try to
allocate one but no more. -ENOMEM will be return if a node cannot be
allocated. -EINVAL will be return if a sibling node is split or cascade
split happens, where two or more new nodes are needed, and these are not
supported by xas_try_split().
xas_split_alloc() and xas_split() split an order-9 to order-0:
---------------------------------
| | | | | | | | |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| | | | | | | | |
---------------------------------
| | | |
------- --- --- -------
| | ... | |
V V V V
----------- ----------- ----------- -----------
| xa_node | | xa_node | ... | xa_node | | xa_node |
----------- ----------- ----------- -----------
xas_try_split() splits an order-9 to order-0:
---------------------------------
| | | | | | | | |
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| | | | | | | | |
---------------------------------
|
|
V
-----------
| xa_node |
-----------
Link: https://lkml.kernel.org/r/20250307174001.242794-1-ziy@nvidia.com
Link: https://lkml.kernel.org/r/20250307174001.242794-2-ziy@nvidia.com
Signed-off-by: Zi Yan <ziy@nvidia.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Kirill A. Shuemov <kirill.shutemov@linux.intel.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Yang Shi <yang@os.amperecomputing.com>
Cc: Yu Zhao <yuzhao@google.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Kairui Song <kasong@tencent.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Alistair Popple
|
82ba975e4c |
mm: allow compound zone device pages
Zone device pages are used to represent various type of device memory managed by device drivers. Currently compound zone device pages are not supported. This is because MEMORY_DEVICE_FS_DAX pages are the only user of higher order zone device pages and have their own page reference counting. A future change will unify FS DAX reference counting with normal page reference counting rules and remove the special FS DAX reference counting. Supporting that requires compound zone device pages. Supporting compound zone device pages requires compound_head() to distinguish between head and tail pages whilst still preserving the special struct page fields that are specific to zone device pages. A tail page is distinguished by having bit zero being set in page->compound_head, with the remaining bits pointing to the head page. For zone device pages page->compound_head is shared with page->pgmap. The page->pgmap field must be common to all pages within a folio, even if the folio spans memory sections. Therefore pgmap is the same for both head and tail pages and can be moved into the folio and we can use the standard scheme to find compound_head from a tail page. Link: https://lkml.kernel.org/r/67055d772e6102accf85161d0b57b0b3944292bf.1740713401.git-series.apopple@nvidia.com Signed-off-by: Alistair Popple <apopple@nvidia.com> Signed-off-by: Balbir Singh <balbirs@nvidia.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Acked-by: David Hildenbrand <david@redhat.com> Tested-by: Alison Schofield <alison.schofield@intel.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Asahi Lina <lina@asahilina.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Chunyan Zhang <zhang.lyra@gmail.com> Cc: "Darrick J. Wong" <djwong@kernel.org> Cc: Dave Chinner <david@fromorbit.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ira Weiny <ira.weiny@intel.com> Cc: Jan Kara <jack@suse.cz> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: linmiaohe <linmiaohe@huawei.com> Cc: Logan Gunthorpe <logang@deltatee.com> Cc: Matthew Wilcow (Oracle) <willy@infradead.org> Cc: Michael "Camp Drill Sergeant" Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Xu <peterx@redhat.com> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Ted Ts'o <tytso@mit.edu> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
ceb08ee965 |
lib/interval_tree: fix the comment of interval_tree_span_iter_next_gap()
The comment of interval_tree_span_iter_next_gap() is not exact, nodes[1] is not always !NULL. There are threes cases here. If there is an interior hole, the statement is correct. If there is a tailing hole or the contiguous used range span to the end, nodes[1] is NULL. Link: https://lkml.kernel.org/r/20250310074938.26756-8-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michel Lespinasse <michel@lespinasse.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
ccaf3efcee |
lib/interval_tree: add test case for span iteration
Verify interval_tree_span_iter_xxx() helpers works as expected. Link: https://lkml.kernel.org/r/20250310074938.26756-6-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michel Lespinasse <michel@lespinasse.org> Cc: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
82114e4513 |
lib/interval_tree: add test case for interval_tree_iter_xxx() helpers
Verify interval_tree_iter_xxx() helpers could find intersection ranges as expected. [sfr@canb.auug.org.au: some of tools/ uses -Wno-unused-parameter] Link: https://lkml.kernel.org/r/20250312113612.31ac808e@canb.auug.org.au Link: https://lkml.kernel.org/r/20250310074938.26756-5-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michel Lespinasse <michel@lespinasse.org> Cc: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
16b1936ae6 |
lib/rbtree: add random seed
Current test use pseudo rand function with fixed seed, which means the test data is the same pattern each time. Add random seed parameter to randomize the test. Link: https://lkml.kernel.org/r/20250310074938.26756-4-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michel Lespinasse <michel@lespinasse.org> Cc: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
3e1d58cd5d |
lib/rbtree: split tests
Current tests are gathered in one big function. Split tests into its own function for better understanding and also it is a preparation for introducing new test cases. Link: https://lkml.kernel.org/r/20250310074938.26756-3-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michel Lespinasse <michel@lespinasse.org> Cc: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Josh Poimboeuf
|
36799069b4 |
objtool: Add CONFIG_OBJTOOL_WERROR
Objtool warnings can be indicative of crashes, broken live patching, or even boot failures. Ignoring them is not recommended. Add CONFIG_OBJTOOL_WERROR to upgrade objtool warnings to errors by enabling the objtool --Werror option. Also set --backtrace to print the branches leading up to the warning, which can help considerably when debugging certain warnings. To avoid breaking bots too badly for now, make it the default for real world builds only (!COMPILE_TEST). Co-developed-by: Brendan Jackman <jackmanb@google.com> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/3e7c109313ff15da6c80788965cc7450115b0196.1741975349.git.jpoimboe@kernel.org |
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|
Sebastian Andrzej Siewior
|
d167706f68 |
lib/dump_stack: Use preempt_model_str()
Use preempt_model_str() to print the current preemption model. Use pr_warn() instead of printk() to pass a loglevel. This makes it part of generic WARN/ BUG traces. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20250314160810.2373416-3-bigeasy@linutronix.de |
||
|
David Hildenbrand
|
66add5e909 |
lib/test_hmm: make dmirror_atomic_map() consume a single page
Patch series "mm: cleanups for device-exclusive entries (hmm)", v2. Some smaller device-exclusive cleanups I have lying around. This patch (of 5): The caller now always passes a single page; let's simplify, and return "0" on success. Link: https://lkml.kernel.org/r/20250226132257.2826043-1-david@redhat.com Link: https://lkml.kernel.org/r/20250226132257.2826043-2-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Reviewed-by: Alistair Popple <apopple@nvidia.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Jérôme Glisse <jglisse@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kuan-Wei Chiu
|
0ac451ecec |
lib min_heap: use size_t for array size and index variables
Replace the int type with size_t for variables representing array sizes and indices in the min-heap implementation. Using size_t aligns with standard practices for size-related variables and avoids potential issues on platforms where int may be insufficient to represent all valid sizes or indices. Link: https://lkml.kernel.org/r/20250215165618.1757219-1-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Cc: Yu-Chun Lin <eleanor15x@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Yury Norov
|
b115b6eccd |
lib/zlib: drop EQUAL macro
The macro is prehistoric, and only exists to help those readers who don't know what memcmp() returns if memory areas differ. This is pretty well documented, so the macro looks excessive. Now that the only user of the macro depends on DEBUG_ZLIB config, GCC warns about unused macro if the library is built with W=2 against defconfig. So drop it for good. Link: https://lkml.kernel.org/r/20250205212933.68695-1-yury.norov@gmail.com Signed-off-by: Yury Norov <yury.norov@gmail.com> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Reviewed-by: Mikhail Zaslonko <zaslonko@linux.ibm.com> Cc: Heiko Carsten <heiko.carstens@de.ibm.com> Cc: Ilya Leoshkevich <iii@linux.ibm.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
I Hsin Cheng
|
95d4b3450e |
lib/plist.c: add shortcut for plist_requeue()
In the operation of plist_requeue(), "node" is deleted from the list
before queueing it back to the list again, which involves looping to find
the tail of same-prio entries.
If "node" is the head of same-prio entries which means its prio_list is on
the priority list, then "node_next" can be retrieve immediately by the
next entry of prio_list, instead of looping nodes on node_list.
The shortcut implementation can benefit plist_requeue() running the below
test, and the test result is shown in the following table.
One can observe from the test result that when the number of nodes of
same-prio entries is smaller, then the probability of hitting the shortcut
can be bigger, thus the benefit can be more significant.
While it tends to behave almost the same for long same-prio entries, since
the probability of taking the shortcut is much smaller.
-----------------------------------------------------------------------
| Test size | 200 | 400 | 600 | 800 | 1000 |
-----------------------------------------------------------------------
| new_plist_requeue | 271521| 1007913| 2148033| 4346792| 12200940|
-----------------------------------------------------------------------
| old_plist_requeue | 301395| 1105544| 2488301| 4632980| 12217275|
-----------------------------------------------------------------------
The test is done on x86_64 architecture with v6.9 kernel and
Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz.
Test script( executed in kernel module mode ):
int init_module(void)
{
unsigned int test_data[test_size];
/* Split the list into 10 different priority
* , when test_size is larger, the number of
* nodes within each priority is larger.
*/
for (i = 0; i < ARRAY_SIZE(test_data); i++) {
test_data[i] = i % 10;
}
ktime_t start, end, time_elapsed = 0;
plist_head_init(&test_head_local);
for (i = 0; i < ARRAY_SIZE(test_node_local); i++) {
plist_node_init(test_node_local + i, 0);
test_node_local[i].prio = test_data[i];
}
for (i = 0; i < ARRAY_SIZE(test_node_local); i++) {
if (plist_node_empty(test_node_local + i)) {
plist_add(test_node_local + i, &test_head_local);
}
}
for (i = 0; i < ARRAY_SIZE(test_node_local); i += 1) {
start = ktime_get();
plist_requeue(test_node_local + i, &test_head_local);
end = ktime_get();
time_elapsed += (end - start);
}
pr_info("plist_requeue() elapsed time : %lld, size %d\n", time_elapsed, test_size);
return 0;
}
[akpm@linux-foundation.org: tweak comment and code layout]
Link: https://lkml.kernel.org/r/20250119062408.77638-1-richard120310@gmail.com
Signed-off-by: I Hsin Cheng <richard120310@gmail.com>
Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Petr Tesarik
|
18ea595a07 |
maple_tree: remove a BUG_ON() in mas_alloc_nodes()
Remove a BUG_ON() right before a WARN_ON() with the same condition.
Calling WARN_ON() and BUG_ON() here is definitely wrong. Since the goal is
generally to remove BUG_ON() invocations from the kernel, keep only the
WARN_ON().
Link: https://lkml.kernel.org/r/20250213114453.1078318-1-ptesarik@suse.com
Fixes:
|
||
|
I Hsin Cheng
|
6fbea85271 |
maple_tree: use ma_dead_node() in mte_dead_node()
Utilize ma_dead_node() in mte_dead_node(). It can prevent decoding the maple enode for a second time. Use the "node" to find parent for comparison. Link: https://lkml.kernel.org/r/20250211071850.330632-1-richard120310@gmail.com Signed-off-by: I Hsin Cheng <richard120310@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Cc: Shuah khan <skhan@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
I Hsin Cheng
|
67254c7d70 |
maple_tree: correct comment for mas_start()
There's no mas->status of "mas_start", what the function is checking is whether mas->status equals to "ma_start". Correct the comment for the function. Link: https://lkml.kernel.org/r/20250209181023.228856-1-richard120310@gmail.com Signed-off-by: I Hsin Cheng <richard120310@gmail.com> Reviewed-by: Liam R. Howlett <howlett@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Suren Baghdasaryan
|
51ff4d7486 |
mm: avoid extra mem_alloc_profiling_enabled() checks
Refactor code to avoid extra mem_alloc_profiling_enabled() checks inside pgalloc_tag_get() function which is often called after that check was already done. Link: https://lkml.kernel.org/r/20250201231803.2661189-1-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev> Cc: David Wang <00107082@163.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Minchan Kim <minchan@google.com> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Sourav Panda <souravpanda@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yu Zhao <yuzhao@google.com> Cc: Zhenhua Huang <quic_zhenhuah@quicinc.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
David Hildenbrand
|
599b684a78 |
mm/rmap: convert make_device_exclusive_range() to make_device_exclusive()
The single "real" user in the tree of make_device_exclusive_range() always requests making only a single address exclusive. The current implementation is hard to fix for properly supporting anonymous THP / large folios and for avoiding messing with rmap walks in weird ways. So let's always process a single address/page and return folio + page to minimize page -> folio lookups. This is a preparation for further changes. Reject any non-anonymous or hugetlb folios early, directly after GUP. While at it, extend the documentation of make_device_exclusive() to clarify some things. Link: https://lkml.kernel.org/r/20250210193801.781278-4-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: Simona Vetter <simona.vetter@ffwll.ch> Reviewed-by: Alistair Popple <apopple@nvidia.com> Tested-by: Alistair Popple <apopple@nvidia.com> Cc: Alex Shi <alexs@kernel.org> Cc: Danilo Krummrich <dakr@kernel.org> Cc: Dave Airlie <airlied@gmail.com> Cc: Jann Horn <jannh@google.com> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Karol Herbst <kherbst@redhat.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Lyude <lyude@redhat.com> Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Xu <peterx@redhat.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: SeongJae Park <sj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yanteng Si <si.yanteng@linux.dev> Cc: Barry Song <v-songbaohua@oppo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Matthew Wilcox (Oracle)
|
b9c0e49abf |
mm: decline to manipulate the refcount on a slab page
Slab pages now have a refcount of 0, so nobody should be trying to
manipulate the refcount on them. Doing so has little effect; the object
could be freed and reallocated to a different purpose, although the slab
itself would not be until the refcount was put making it behave rather
like TYPESAFE_BY_RCU.
Unfortunately, __iov_iter_get_pages_alloc() does take a refcount. Fix
that to not change the refcount, and make put_page() silently not change
the refcount. get_page() warns so that we can fix any other callers that
need to be changed.
Long-term, networking needs to stop taking a refcount on the pages that it
uses and rely on the caller to hold whatever references are necessary to
make the memory stable. In the medium term, more page types are going to
hav a zero refcount, so we'll want to move get_page() and put_page() out
of line.
Link: https://lkml.kernel.org/r/20250310143544.1216127-1-willy@infradead.org
Fixes:
|
||
|
Sergio González Collado
|
c104c16073 |
Kunit to check the longest symbol length
The longest length of a symbol (KSYM_NAME_LEN) was increased to 512 in the reference [1]. This patch adds kunit test suite to check the longest symbol length. These tests verify that the longest symbol length defined is supported. This test can also help other efforts for longer symbol length, like [2]. The test suite defines one symbol with the longest possible length. The first test verify that functions with names of the created symbol, can be called or not. The second test, verify that the symbols are created (or not) in the kernel symbol table. [1] https://lore.kernel.org/lkml/20220802015052.10452-6-ojeda@kernel.org/ [2] https://lore.kernel.org/lkml/20240605032120.3179157-1-song@kernel.org/ Link: https://lore.kernel.org/r/20250302221518.76874-1-sergio.collado@gmail.com Tested-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Reviewed-by: Rae Moar <rmoar@google.com> Signed-off-by: Sergio González Collado <sergio.collado@gmail.com> Link: https://github.com/Rust-for-Linux/linux/issues/504 Reviewed-by: Rae Moar <rmoar@google.com> Acked-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <shuah@kernel.org> |
||
|
Thomas Weißschuh
|
268d191abc |
kbuild: implement CONFIG_HEADERS_INSTALL for Usermode Linux
userprogs sometimes need access to UAPI headers. This is currently not possible for Usermode Linux, as UM is only a pseudo architecture built on top of a regular architecture and does not have its own UAPI. Instead use the UAPI headers from the underlying regular architecture. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> |
||
|
Tamir Duberstein
|
d62f8c9547 |
scanf: break kunit into test cases
Use `suite_init` and move some tests into `scanf_test_cases`. This gives us nicer output in the event of a failure. Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Tamir Duberstein <tamird@gmail.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Tested-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20250307-scanf-kunit-convert-v9-4-b98820fa39ff@gmail.com Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Tamir Duberstein
|
97c1f302f2 |
scanf: convert self-test to KUnit
Convert the scanf() self-test to a KUnit test. In the interest of keeping the patch reasonably-sized this doesn't refactor the tests into proper parameterized tests - it's all one big test case. Reviewed-by: David Gow <davidgow@google.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Tested-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Tamir Duberstein <tamird@gmail.com> Link: https://lore.kernel.org/r/20250307-scanf-kunit-convert-v9-3-b98820fa39ff@gmail.com Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Tamir Duberstein
|
6340d61b90 |
scanf: remove redundant debug logs
Remove `pr_debug` calls which emit information already contained in `pr_warn` calls that occur on test failure. This reduces unhelpful test verbosity. Note that a `pr_debug` removed from `_check_numbers_template` appears to have been the only guard against silent false positives, but in fact this condition is handled in `_test`; it is only possible for `n_args` to be `0` in `_check_numbers_template` if the test explicitly expects it *and* `vsscanf` returns `0`, matching the expectation. Reviewed-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Tamir Duberstein <tamird@gmail.com> Link: https://lore.kernel.org/r/20250307-scanf-kunit-convert-v9-2-b98820fa39ff@gmail.com Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Tamir Duberstein
|
5866730da7 |
scanf: implicate test line in failure messages
This improves the failure output by pointing to the failing line at the top level of the test. Reviewed-by: Petr Mladek <pmladek@suse.com> Tested-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Tamir Duberstein <tamird@gmail.com> Link: https://lore.kernel.org/r/20250307-scanf-kunit-convert-v9-1-b98820fa39ff@gmail.com Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Paolo Abeni
|
941defcea7 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.14-rc6). Conflicts: tools/testing/selftests/drivers/net/ping.py |
||
|
Nick Terrell
|
65d1f5507e |
zstd: Import upstream v1.5.7
In addition to keeping the kernel's copy of zstd up to date, this update was requested by Intel to expose upstream's APIs that allow QAT to accelerate the LZ match finding stage of Zstd. This patch is imported from the upstream tag v1.5.7-kernel [0], which is signed with upstream's signing key EF8FE99528B52FFD [1]. It was imported from upstream using this command: export ZSTD=/path/to/repo/zstd/ export LINUX=/path/to/repo/linux/ cd "$ZSTD/contrib/linux-kernel" git checkout v1.5.7-kernel make import LINUX="$LINUX" This patch has been tested on x86-64, and has been boot tested with a zstd compressed kernel & initramfs on i386 and aarch64. I benchmarked the patch on x86-64 with gcc-14.2.1 on an Intel i9-9900K by measruing the performance of compressed filesystem reads and writes. Component, Level, Size delta, C. time delta, D. time delta Btrfs , 1, +0.00%, -6.1%, +1.4% Btrfs , 3, +0.00%, -9.8%, +3.0% Btrfs , 5, +0.00%, +1.7%, +1.4% Btrfs , 7, +0.00%, -1.9%, +2.7% Btrfs , 9, +0.00%, -3.4%, +3.7% Btrfs , 15, +0.00%, -0.3%, +3.6% SquashFS , 1, +0.00%, N/A, +1.9% The major changes that impact the kernel use cases for each version are: v1.5.7: https://github.com/facebook/zstd/releases/tag/v1.5.7 * Add zstd_compress_sequences_and_literals() for use by Intel's QAT driver to implement Zstd compression acceleration in the kernel. * Fix an underflow bug in 32-bit builds that can cause data corruption when processing more than 4GB of data with a single `ZSTD_CCtx` object, when an input crosses the 4GB boundry. I don't believe this impacts any current kernel use cases, because the `ZSTD_CCtx` is typically reconstructed between compressions. * Levels 1-4 see 5-10% compression speed improvements for inputs smaller than 128KB. v1.5.6: https://github.com/facebook/zstd/releases/tag/v1.5.6 * Improved compression ratio for the highest compression levels. I don't expect these see much use however, due to their slow speeds. v1.5.5: https://github.com/facebook/zstd/releases/tag/v1.5.5 * Fix a rare corruption bug that can trigger on levels 13 and above. * Improve compression speed of levels 5-11 on incompressible data. v1.5.4: https://github.com/facebook/zstd/releases/tag/v1.5.4 * Improve copmression speed of levels 5-11 on ARM. * Improve dictionary compression speed. Signed-off-by: Nick Terrell <terrelln@fb.com> |
||
|
Tamir Duberstein
|
034bee685f |
printf: implicate test line in failure messages
This improves the failure output by pointing to the failing line at the
top level of the test, e.g.:
# test_number: EXPECTATION FAILED at lib/printf_kunit.c:103
lib/printf_kunit.c:167: vsnprintf(buf, 256, "%#-12x", ...) wrote '0x1234abcd ', expected '0x1234abce '
# test_number: EXPECTATION FAILED at lib/printf_kunit.c:142
lib/printf_kunit.c:167: kvasprintf(..., "%#-12x", ...) returned '0x1234abcd ', expected '0x1234abce '
Signed-off-by: Tamir Duberstein <tamird@gmail.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Tested-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20250307-printf-kunit-convert-v6-3-4d85c361c241@gmail.com
Signed-off-by: Kees Cook <kees@kernel.org>
|
||
|
Tamir Duberstein
|
81a03aa9b8 |
printf: break kunit into test cases
Move all tests into `printf_test_cases`. This gives us nicer output in the event of a failure. Combine `plain_format` and `plain_hash` into `hash_pointer` since they're testing the same scenario. Signed-off-by: Tamir Duberstein <tamird@gmail.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Tested-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20250307-printf-kunit-convert-v6-2-4d85c361c241@gmail.com Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Tamir Duberstein
|
7a79e7daa8 |
printf: convert self-test to KUnit
Convert the printf() self-test to a KUnit test. In the interest of keeping the patch reasonably-sized this doesn't refactor the tests into proper parameterized tests - it's all one big test case. Signed-off-by: Tamir Duberstein <tamird@gmail.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Tested-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20250307-printf-kunit-convert-v6-1-4d85c361c241@gmail.com Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Kees Cook
|
6ee149f61b |
kunit/fortify: Replace "volatile" with OPTIMIZER_HIDE_VAR()
It does seem that using "volatile" isn't going to be sane compared to using OPTIMIZER_HIDE_VAR() going forward. Some strange interactions[1] with the sanitizers have been observed in the self-test code, so replace the logic. Reported-by: Nathan Chancellor <nathan@kernel.org> Closes: https://github.com/ClangBuiltLinux/linux/issues/2075 [1] Link: https://lore.kernel.org/r/20250312000439.work.112-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Kees Cook
|
416cf1f4d9 |
kunit/fortify: Expand testing of __compiletime_strlen()
It seems that Clang thinks __builtin_constant_p() of undefined variables should return true[1]. This is being fixed separately[2], but in the meantime, expand the fortify tests to help track this kind of thing down faster in the future. Link: https://github.com/ClangBuiltLinux/linux/issues/2073 [1] Link: https://github.com/llvm/llvm-project/pull/130713 [2] Link: https://lore.kernel.org/r/20250312000349.work.786-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Eric Biggers
|
981b39dc6d |
lib/crc: remove unnecessary prompt for CONFIG_CRC64
All modules that need CONFIG_CRC64 already select it, so there is no need to bother users about the option. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250304230712.167600-6-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
dce214db5d |
lib/crc: remove unnecessary prompt for CONFIG_LIBCRC32C
All modules that need CONFIG_LIBCRC32C already select it, so there is no need to bother users about the option. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250304230712.167600-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
aa09b3223c |
lib/crc: remove unnecessary prompt for CONFIG_CRC8
All modules that need CONFIG_CRC8 already select it, so there is no need to bother users about the option. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250304230712.167600-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
f5a40fcf82 |
lib/crc: remove unnecessary prompt for CONFIG_CRC7
All modules that need CONFIG_CRC7 already select it, so there is no need to bother users about the option. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250304230712.167600-3-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
7f36255f92 |
lib/crc: remove unnecessary prompt for CONFIG_CRC4
All modules that need CONFIG_CRC4 already select it, so there is no need to bother users about the option. Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250304230712.167600-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
f3e5fe4adf |
lib/crc7: unexport crc7_be_syndrome_table
Since neither crc7_be_syndrome_table nor crc7_be_byte() are used outside lib/crc7.c, fold them into lib/crc7.c. Link: https://lore.kernel.org/r/20250304224052.157915-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
415999ea30 |
lib/crc_kunit.c: update comment in crc_benchmark()
None of the CRC library functions use __pure anymore, so the comment in crc_benchmark() is outdated. But the comment was not really correct anyway, since the CRC computation could (in principle) be optimized out regardless of __pure. Update the comment to have a proper explanation. Link: https://lore.kernel.org/r/20250305015830.37813-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
7715f8cfe5 |
lib/crc_kunit.c: add test and benchmark for crc7_be()
Wire up crc7_be() to crc_kunit. Previously it had no test. Link: https://lore.kernel.org/r/20250304223943.157493-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Sebastian Andrzej Siewior
|
f47d2a3f75 |
bug: Use RCU instead RCU-sched to protect module_bug_list.
The list module_bug_list relies on module_mutex for writer synchronisation. The list is already RCU style. The list removal is synchronized with modules' synchronize_rcu() in free_module(). Use RCU read lock protection instead of RCU-sched. Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20250108090457.512198-29-bigeasy@linutronix.de Signed-off-by: Petr Pavlu <petr.pavlu@suse.com> |
||
|
Joel Granados
|
aa0fdccda4 |
tests/module: nix-ify
Use "#!/usr/bin/env bash" instead of "#!/bin/bash". This is necessary for nix environments as they only provide /usr/bin/env at the standard location. Signed-off-by: Joel Granados <joel.granados@kernel.org> Acked-by: Luis Chamberlain <mcgrof@kernel.org> Link: https://lore.kernel.org/r/20250122-jag-nix-ify-v1-1-addb3170f93c@kernel.org Signed-off-by: Petr Pavlu <petr.pavlu@suse.com> |
||
|
Greg Kroah-Hartman
|
046cc01be6 |
Merge 6.14-rc6 into char-misc-next
We need the fixes in here as well to build on top of. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Alice Ryhl
|
92d2873bed |
print: use new #[export] macro for rust_fmt_argument
This moves the rust_fmt_argument function over to use the new #[export] macro, which will verify at compile-time that the function signature matches what is in the header file. Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org> Reviewed-by: Tamir Duberstein <tamird@gmail.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Alice Ryhl <aliceryhl@google.com> Acked-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20250303-export-macro-v3-4-41fbad85a27f@google.com [ Removed period as requested by Andy. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org> |
||
|
Alice Ryhl
|
901b3290bd |
rust: fix signature of rust_fmt_argument
Without this change, the rest of this series will emit the following
error message:
error[E0308]: `if` and `else` have incompatible types
--> <linux>/rust/kernel/print.rs:22:22
|
21 | #[export]
| --------- expected because of this
22 | unsafe extern "C" fn rust_fmt_argument(
| ^^^^^^^^^^^^^^^^^ expected `u8`, found `i8`
|
= note: expected fn item `unsafe extern "C" fn(*mut u8, *mut u8, *mut c_void) -> *mut u8 {bindings::rust_fmt_argument}`
found fn item `unsafe extern "C" fn(*mut i8, *mut i8, *const c_void) -> *mut i8 {print::rust_fmt_argument}`
The error may be different depending on the architecture.
To fix this, change the void pointer argument to use a const pointer,
and change the imports to use crate::ffi instead of core::ffi for
integer types.
Fixes:
|
||
|
Linus Torvalds
|
1110ce6a1e |
33 hotfixes. 24 are cc:stable and the remainder address post-6.13 issues
or aren't considered necessary for -stable kernels.
26 are for MM and 7 are for non-MM.
- "mm: memory_failure: unmap poisoned folio during migrate properly"
from Ma Wupeng fixes a couple of two year old bugs involving the
migration of hwpoisoned folios.
- "selftests/damon: three fixes for false results" from SeongJae Park
fixes three one year old bugs in the SAMON selftest code.
The remainder are singletons and doubletons. Please see the individual
changelogs for details.
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Merge tag 'mm-hotfixes-stable-2025-03-08-16-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"33 hotfixes. 24 are cc:stable and the remainder address post-6.13
issues or aren't considered necessary for -stable kernels.
26 are for MM and 7 are for non-MM.
- "mm: memory_failure: unmap poisoned folio during migrate properly"
from Ma Wupeng fixes a couple of two year old bugs involving the
migration of hwpoisoned folios.
- "selftests/damon: three fixes for false results" from SeongJae Park
fixes three one year old bugs in the SAMON selftest code.
The remainder are singletons and doubletons. Please see the individual
changelogs for details"
* tag 'mm-hotfixes-stable-2025-03-08-16-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (33 commits)
mm/page_alloc: fix uninitialized variable
rapidio: add check for rio_add_net() in rio_scan_alloc_net()
rapidio: fix an API misues when rio_add_net() fails
MAINTAINERS: .mailmap: update Sumit Garg's email address
Revert "mm/page_alloc.c: don't show protection in zone's ->lowmem_reserve[] for empty zone"
mm: fix finish_fault() handling for large folios
mm: don't skip arch_sync_kernel_mappings() in error paths
mm: shmem: remove unnecessary warning in shmem_writepage()
userfaultfd: fix PTE unmapping stack-allocated PTE copies
userfaultfd: do not block on locking a large folio with raised refcount
mm: zswap: use ATOMIC_LONG_INIT to initialize zswap_stored_pages
mm: shmem: fix potential data corruption during shmem swapin
mm: fix kernel BUG when userfaultfd_move encounters swapcache
selftests/damon/damon_nr_regions: sort collected regiosn before checking with min/max boundaries
selftests/damon/damon_nr_regions: set ops update for merge results check to 100ms
selftests/damon/damos_quota: make real expectation of quota exceeds
include/linux/log2.h: mark is_power_of_2() with __always_inline
NFS: fix nfs_release_folio() to not deadlock via kcompactd writeback
mm, swap: avoid BUG_ON in relocate_cluster()
mm: swap: use correct step in loop to wait all clusters in wait_for_allocation()
...
|
||
|
Anna-Maria Behnsen
|
886653e366 |
vdso: Rework struct vdso_time_data and introduce struct vdso_clock
To support multiple PTP clocks, the VDSO data structure needs to be reworked. All clock specific data will end up in struct vdso_clock and in struct vdso_time_data there will be an array of VDSO clocks. Now that all preparatory changes are in place: Split the clock related struct members into a separate struct vdso_clock. Make sure all users are aware, that vdso_time_data is no longer initialized as an array and vdso_clock is now the array inside vdso_data. Remove the vdso_clock define, which mapped it to vdso_time_data for the transition. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250303-vdso-clock-v1-19-c1b5c69a166f@linutronix.de |
||
|
Anna-Maria Behnsen
|
0235220807 |
vdso/namespace: Rename timens_setup_vdso_data() to reflect new vdso_clock struct
To support multiple PTP clocks, the VDSO data structure needs to be reworked. All clock specific data will end up in struct vdso_clock and in struct vdso_time_data there will be array of VDSO clocks. At the moment, vdso_clock is simply a define which maps vdso_clock to vdso_time_data. For time namespaces, vdso_time_data needs to be set up. But only the clock related part of the vdso_data thats requires this setup. To reflect the future struct vdso_clock, rename timens_setup_vdso_data() to timns_setup_vdso_clock_data(). No functional change. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250303-vdso-clock-v1-13-c1b5c69a166f@linutronix.de |
||
|
Anna-Maria Behnsen
|
80801972a1 |
vdso/gettimeofday: Prepare helper functions for introduction of struct vdso_clock
To support multiple PTP clocks, the VDSO data structure needs to be reworked. All clock specific data will end up in struct vdso_clock and in struct vdso_time_data there will be array of VDSO clocks. At the moment, vdso_clock is simply a define which maps vdso_clock to vdso_time_data. To prepare for the rework of the data structures, replace the struct vdso_time_data pointer argument of the helper functions with struct vdso_clock pointer where applicable. No functional change. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250303-vdso-clock-v1-11-c1b5c69a166f@linutronix.de |
||
|
Anna-Maria Behnsen
|
8c3f5cb3d3 |
vdso/gettimeofday: Prepare do_coarse_timens() for introduction of struct vdso_clock
To support multiple PTP clocks, the VDSO data structure needs to be reworked. All clock specific data will end up in struct vdso_clock and in struct vdso_time_data there will be array of VDSO clocks. At the moment, vdso_clock is simply a define which maps vdso_clock to vdso_time_data. Prepare for the rework of these structures by adding a struct vdso_clock pointer argument to do_coarse_time_ns(), and replace the struct vdso_time_data pointer with the new pointer argument where applicable. No functional change. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250303-vdso-clock-v1-10-c1b5c69a166f@linutronix.de |
||
|
Anna-Maria Behnsen
|
70067ae181 |
vdso/gettimeofday: Prepare do_coarse() for introduction of struct vdso_clock
To support multiple PTP clocks, the VDSO data structure needs to be reworked. All clock specific data will end up in struct vdso_clock and in struct vdso_time_data there will be array of VDSO clocks. At the moment, vdso_clock is simply a define which maps vdso_clock to vdso_time_data. Prepare for the rework of these structures by adding a struct vdso_clock pointer argument to do_coarse(), and replace the struct vdso_time_data pointer with the new pointer argument where applicable. No functional change. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250303-vdso-clock-v1-9-c1b5c69a166f@linutronix.de |
||
|
Anna-Maria Behnsen
|
83a2a6b8cf |
vdso/gettimeofday: Prepare do_hres_timens() for introduction of struct vdso_clock
To support multiple PTP clocks, the VDSO data structure needs to be reworked. All clock specific data will end up in struct vdso_clock and in struct vdso_time_data there will be array of VDSO clocks. At the moment, vdso_clock is simply a define which maps vdso_clock to vdso_time_data. Prepare for the rework of these structures by adding a struct vdso_clock pointer argument to do_hres_timens(), and replace the struct vdso_time_data pointer with the new pointer argument where applicable. No functional change. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250303-vdso-clock-v1-8-c1b5c69a166f@linutronix.de |
||
|
Anna-Maria Behnsen
|
64c3613ce3 |
vdso/gettimeofday: Prepare do_hres() for introduction of struct vdso_clock
To support multiple PTP clocks, the VDSO data structure needs to be reworked. All clock specific data will end up in struct vdso_clock and in struct vdso_time_data there will be array of VDSO clocks. At the moment, vdso_clock is simply a define which maps vdso_clock to vdso_time_data. Prepare for the rework of these structures by adding a struct vdso_clock pointer argument to do_hres(), and replace the struct vdso_time_data pointer with the new pointer argument where applicable. No functional change. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250303-vdso-clock-v1-7-c1b5c69a166f@linutronix.de |
||
|
Anna-Maria Behnsen
|
cddb82d1c4 |
vdso/gettimeofday: Prepare introduction of struct vdso_clock
To support multiple PTP clocks, the VDSO data structure needs to be reworked. All clock specific data will end up in struct vdso_clock and in struct vdso_time_data there will be array of VDSO clocks. At the moment, vdso_clock is simply a define which maps vdso_clock to vdso_time_data. Prepare all functions which need the pointer to the vdso_clock array to work correctly after introducing the new struct. Where applicable, replace the struct vdso_time_data pointer by a struct vdso_clock pointer. No functional change. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250303-vdso-clock-v1-6-c1b5c69a166f@linutronix.de |
||
|
David Disseldorp
|
fcc155008a
|
vsprintf: add simple_strntoul
cpio extraction currently does a memcpy to ensure that the archive hex fields are null terminated for simple_strtoul(). simple_strntoul() will allow us to avoid the memcpy. Signed-off-by: David Disseldorp <ddiss@suse.de> Link: https://lore.kernel.org/r/20250304061020.9815-4-ddiss@suse.de Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Ard Biesheuvel
|
ba89b4eaa6 |
crypto: lib/chachapoly - Drop dependency on CRYPTO_ALGAPI
The ChaCha20-Poly1305 library code uses the sg_miter API to process input presented via scatterlists, except for the special case where the digest buffer is not covered entirely by the same scatterlist entry as the last byte of input. In that case, it uses scatterwalk_map_and_copy() to access the memory in the input scatterlist where the digest is stored. This results in a dependency on crypto/scatterwalk.c and therefore on CONFIG_CRYPTO_ALGAPI, which is unnecessary, as the sg_miter API already provides this functionality via sg_copy_to_buffer(). So use that instead, and drop the dependencies on CONFIG_CRYPTO_ALGAPI and CONFIG_CRYPTO. Reported-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Eric Biggers <ebiggers@kernel.org> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Herbert Xu
|
cc47f07234 |
crypto: lzo - Fix compression buffer overrun
Unlike the decompression code, the compression code in LZO never checked for output overruns. It instead assumes that the caller always provides enough buffer space, disregarding the buffer length provided by the caller. Add a safe compression interface that checks for the end of buffer before each write. Use the safe interface in crypto/lzo. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Kees Cook
|
47f4af43e7 |
ubsan/overflow: Enable ignorelist parsing and add type filter
Limit integer wrap-around mitigation to only the "size_t" type (for now). Notably this covers all special functions/builtins that return "size_t", like sizeof(). This remains an experimental feature and is likely to be replaced with type annotations. Reviewed-by: Justin Stitt <justinstitt@google.com> Link: https://lore.kernel.org/r/20250307041914.937329-3-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Kees Cook
|
272a767063 |
ubsan/overflow: Enable pattern exclusions
To make integer wrap-around mitigation actually useful, the associated sanitizers must not instrument cases where the wrap-around is explicitly defined (e.g. "-2UL"), being tested for (e.g. "if (a + b < a)"), or where it has no impact on code flow (e.g. "while (var--)"). Enable pattern exclusions for the integer wrap sanitizers. Reviewed-by: Justin Stitt <justinstitt@google.com> Link: https://lore.kernel.org/r/20250307041914.937329-2-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Kees Cook
|
ed2b548f10 |
ubsan/overflow: Rework integer overflow sanitizer option to turn on everything
Since we're going to approach integer overflow mitigation a type at a time, we need to enable all of the associated sanitizers, and then opt into types one at a time. Rename the existing "signed wrap" sanitizer to just the entire topic area: "integer wrap". Enable the implicit integer truncation sanitizers, with required callbacks and tests. Notably, this requires features (currently) only available in Clang, so we can depend on the cc-option tests to determine availability instead of doing version tests. Link: https://lore.kernel.org/r/20250307041914.937329-1-kees@kernel.org Signed-off-by: Kees Cook <kees@kernel.org> |
||
|
Jakub Kicinski
|
2525e16a2b |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.14-rc6). Conflicts: net/ethtool/cabletest.c |
||
|
Kees Cook
|
d985e4399a |
kunit/stackinit: Use fill byte different from Clang i386 pattern
The byte initialization values used with -ftrivial-auto-var-init=pattern
(CONFIG_INIT_STACK_ALL_PATTERN=y) depends on the compiler, architecture,
and byte position relative to struct member types. On i386 with Clang,
this includes the 0xFF value, which means it looks like nothing changes
between the leaf byte filling pass and the expected "stack wiping"
pass of the stackinit test.
Use the byte fill value of 0x99 instead, fixing the test for i386 Clang
builds.
Reported-by: ernsteiswuerfel
Closes: https://github.com/ClangBuiltLinux/linux/issues/2071
Fixes:
|
||
|
Ujwal Kundur
|
04ec365e3f |
Documentation: fix doc link to fault-injection.rst
Fix incorrect reference to fault-injection docs Link: https://lkml.kernel.org/r/20250215105106.734-1-ujwal.kundur@gmail.com Signed-off-by: Ujwal Kundur <ujwal.kundur@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kees Cook
|
04e403e662 |
kunit/overflow: Fix DEFINE_FLEX tests for counted_by
Unfortunately, __builtin_dynamic_object_size() does not take into account
flexible array sizes, even when they are sized by __counted_by. As a
result, the size tests for the flexible arrays need to be separated to
get an accurate check of the compiler's behavior. While at it, fully test
sizeof, __struct_size (bdos(..., 0)), and __member_size (bdos(..., 1)).
I still think this is a compiler design issue, but there's not much to
be done about it currently beyond adjusting these tests. GCC and Clang
agree on this behavior at least. :)
Reported-by: "Thomas Weißschuh" <linux@weissschuh.net>
Closes: https://lore.kernel.org/lkml/e1a1531d-6968-4ae8-a3b5-5ea0547ec4b3@t-8ch.de/
Fixes:
|
||
|
Heiko Carstens
|
db14f78ecb |
s390/vx: Convert cpu_has_vx() to cpu feature function
Instead of having a private cpu_has_vx() implementation use the new common cpu feature method. Move the facility detection to the decompressor so it matches all other cpu features. Reviewed-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
||
|
Ingo Molnar
|
1b4c36f9b1 |
Merge branch 'x86/urgent' into x86/cpu, to pick up dependent commits
Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Uladzislau Rezki (Sony)
|
7e384dbb57 |
kunit, slub: Add test_kfree_rcu_wq_destroy use case
Add a test_kfree_rcu_wq_destroy test to verify a kmem_cache_destroy() from a workqueue context. The problem is that, before destroying any cache the kvfree_rcu_barrier() is invoked to guarantee that in-flight freed objects are flushed. The _barrier() function queues and flushes its own internal workers which might conflict with a workqueue type a kmem-cache gets destroyed from. One example is when a WQ_MEM_RECLAIM workqueue is flushing !WQ_MEM_RECLAIM events which leads to a kernel splat. See the check_flush_dependency() in the workqueue.c file. If this test does not emits any kernel warning, it is passed. Reviewed-by: Keith Busch <kbusch@kernel.org> Co-developed-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Signed-off-by: Vlastimil Babka <vbabka@suse.cz> |
||
|
Herbert Xu
|
17ec3e71ba |
crypto: lib/Kconfig - Hide arch options from user
The ARCH_MAY_HAVE patch missed arm64, mips and s390. But it may
also lead to arch options being enabled but ineffective because
of modular/built-in conflicts.
As the primary user of all these options wireguard is selecting
the arch options anyway, make the same selections at the lib/crypto
option level and hide the arch options from the user.
Instead of selecting them centrally from lib/crypto, simply set
the default of each arch option as suggested by Eric Biggers.
Change the Crypto API generic algorithms to select the top-level
lib/crypto options instead of the generic one as otherwise there
is no way to enable the arch options (Eric Biggers). Introduce a
set of INTERNAL options to work around dependency cycles on the
CONFIG_CRYPTO symbol.
Fixes:
|
||
|
Arnd Bergmann
|
dc90c89036 |
asm-generic/io.h: rework split ioread64/iowrite64 helpers
There are two incompatible sets of definitions of these eight functions: On 64-bit architectures setting CONFIG_HAS_IOPORT, they turn into either pair of 32-bit PIO (inl/outl) accesses or a single 64-bit MMIO (readq/writeq). On other 64-bit architectures, they are always split into 32-bit accesses. Depending on which header gets included in a driver, there are additionally definitions for ioread64()/iowrite64() that are expected to produce a 64-bit register MMIO access on all 64-bit architectures. To separate the conflicting definitions, make the version in include/linux/io-64-nonatomic-*.h visible on all architectures but pick the one from lib/iomap.c on architectures that set CONFIG_GENERIC_IOMAP in place of the default fallback. Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
||
|
Linus Torvalds
|
405a41d759 |
Fix an rcuref_put() slowpath race.
Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmfCB+4RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1h75Q/+NuJhVxipKT1ZVGJ8X1OyL4XvevELshU0 HhsKYkwrAO+AIPZ/5zxVo4v5qsPZ0JeIHZQITykfgjy180z4c4LemBcUyrxzcehW bYz5HLyJa20gbyiTzNe6RlGWkQ52tivM8Tk4yBmfJNocgvkril7P1Fc02tbQsj5u lXOm/NMKSiHInoEXDKB9PZk5GK0qnZnSDdRFFuPQiqRuLOt1BbiLpRRGlxPhWLkk qwrJQMZyrqqe5MggdDhm21HPvJIZPa/IKU3W6V3ykhd8Va6rfQ7RsJfQ3CJlQR1I oVflGPDVhZlirRhlswgBzUBUfPcmUISLTyZ/PlwwNyaBYWVqCn1YyDTacJlIkqc4 hD7Nds4UitmVmFaENQLmkroSObvEpdDj/qyl6RI8pk+6pf58496+HoRRpfC3Am/2 Oa8q/rx0xG2TPFvVpnnBCxw2cPqIxG1ZyMbA70GuF1wlYxExccGWLQmB246TORB3 3HWw7+heBrOJ5yspiXpeNdtMMQoMYiImsxTJuKjhwCSRPZyOCyTiIionk5lX2QVy oOykELFFfp2g+/UoxJf5NfbucQyshTofetQry6sAHKl7iCg/5QBr04OqlMRxQ231 Ej/1Urq8mkXC8flAujv5UIIIpXlTeKNtSfNhahkyZZ3YlUijatiJs5bU5CHTvyBu GH4m0TUgFNI= =39Cx -----END PGP SIGNATURE----- Merge tag 'locking-urgent-2025-02-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking fix from Ingo Molnar: "Fix an rcuref_put() slowpath race" * tag 'locking-urgent-2025-02-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: rcuref: Plug slowpath race in rcuref_put() |
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|
Kees Cook
|
ae4c0935f6 |
string: kunit: Mark nonstring test strings as __nonstring
In preparation for strtomem*() checking that its destination is a __nonstring, annotate "nonstring" and "nonstring_small" variables accordingly. Signed-off-by: Kees Cook <kees@kernel.org> |
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|
H. Peter Anvin (Intel)
|
909639aa58 |
x86/cpufeatures: Rename X86_CMPXCHG64 to X86_CX8
Replace X86_CMPXCHG64 with X86_CX8, as CX8 is the name of the CPUID flag, thus to make it consistent with X86_FEATURE_CX8 defined in <asm/cpufeatures.h>. No functional change intended. Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com> Signed-off-by: Xin Li (Intel) <xin@zytor.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20250228082338.73859-2-xin@zytor.com |
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|
Alexei Starovoitov
|
8c57b687e8 |
mm, bpf: Introduce free_pages_nolock()
Introduce free_pages_nolock() that can free pages without taking locks. It relies on trylock and can be called from any context. Since spin_trylock() cannot be used in PREEMPT_RT from hard IRQ or NMI it uses lockless link list to stash the pages which will be freed by subsequent free_pages() from good context. Do not use llist unconditionally. BPF maps continuously allocate/free, so we cannot unconditionally delay the freeing to llist. When the memory becomes free make it available to the kernel and BPF users right away if possible, and fallback to llist as the last resort. Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/r/20250222024427.30294-4-alexei.starovoitov@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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|
Alexei Starovoitov
|
97769a53f1 |
mm, bpf: Introduce try_alloc_pages() for opportunistic page allocation
Tracing BPF programs execute from tracepoints and kprobes where running context is unknown, but they need to request additional memory. The prior workarounds were using pre-allocated memory and BPF specific freelists to satisfy such allocation requests. Instead, introduce gfpflags_allow_spinning() condition that signals to the allocator that running context is unknown. Then rely on percpu free list of pages to allocate a page. try_alloc_pages() -> get_page_from_freelist() -> rmqueue() -> rmqueue_pcplist() will spin_trylock to grab the page from percpu free list. If it fails (due to re-entrancy or list being empty) then rmqueue_bulk()/rmqueue_buddy() will attempt to spin_trylock zone->lock and grab the page from there. spin_trylock() is not safe in PREEMPT_RT when in NMI or in hard IRQ. Bailout early in such case. The support for gfpflags_allow_spinning() mode for free_page and memcg comes in the next patches. This is a first step towards supporting BPF requirements in SLUB and getting rid of bpf_mem_alloc. That goal was discussed at LSFMM: https://lwn.net/Articles/974138/ Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/r/20250222024427.30294-3-alexei.starovoitov@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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|
Ahmed Zaki
|
bd7c00605e |
net: move aRFS rmap management and CPU affinity to core
A common task for most drivers is to remember the user-set CPU affinity
to its IRQs. On each netdev reset, the driver should re-assign the user's
settings to the IRQs. Unify this task across all drivers by moving the CPU
affinity to napi->config.
However, to move the CPU affinity to core, we also need to move aRFS
rmap management since aRFS uses its own IRQ notifiers.
For the aRFS, add a new netdev flag "rx_cpu_rmap_auto". Drivers supporting
aRFS should set the flag via netif_enable_cpu_rmap() and core will allocate
and manage the aRFS rmaps. Freeing the rmap is also done by core when the
netdev is freed. For better IRQ affinity management, move the IRQ rmap
notifier inside the napi_struct and add new notify.notify and
notify.release functions: netif_irq_cpu_rmap_notify() and
netif_napi_affinity_release().
Now we have the aRFS rmap management in core, add CPU affinity mask to
napi_config. To delegate the CPU affinity management to the core, drivers
must:
1 - set the new netdev flag "irq_affinity_auto":
netif_enable_irq_affinity(netdev)
2 - create the napi with persistent config:
netif_napi_add_config()
3 - bind an IRQ to the napi instance: netif_napi_set_irq()
the core will then make sure to use re-assign affinity to the napi's
IRQ.
The default IRQ mask is set to one cpu starting from the closest NUMA.
Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com>
Link: https://patch.msgid.link/20250224232228.990783-2-ahmed.zaki@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
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|
Yury Norov
|
14c384131e |
cpumask: drop cpumask_next_wrap_old()
Now that we have cpumask_next_wrap() wired to generic find_next_bit_wrap(), the old implementation is not needed. Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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|
Yury Norov
|
566babe82b |
cpumask: use cpumask_next_wrap() where appropriate
Now that cpumask_next{_and}_wrap() is wired to generic
find_next_bit_wrap(), we can use it in cpumask_any{_and}_distribute().
This automatically makes the cpumask_*_distribute() functions to use
small_cpumask_bits instead of nr_cpumask_bits, which itself is a good
optimization.
Signed-off-by: Yury Norov <yury.norov@gmail.com>
|
||
|
Yury Norov
|
dc5bb9b769 |
cpumask: deprecate cpumask_next_wrap()
The next patch aligns implementation of cpumask_next_wrap() with the find_next_bit_wrap(), and it changes function signature. To make the transition smooth, this patch deprecates current implementation by adding an _old suffix. The following patches switch current users to the new implementation one by one. No functional changes were intended. Signed-off-by: Yury Norov <yury.norov@gmail.com> |
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|
Herbert Xu
|
1047e21aec |
crypto: lib/Kconfig - Fix lib built-in failure when arch is modular
The HAVE_ARCH Kconfig options in lib/crypto try to solve the modular versus built-in problem, but it still fails when the the LIB option (e.g., CRYPTO_LIB_CURVE25519) is selected externally. Fix this by introducing a level of indirection with ARCH_MAY_HAVE Kconfig options, these then go on to select the ARCH_HAVE options if the ARCH Kconfig options matches that of the LIB option. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202501230223.ikroNDr1-lkp@intel.com/ Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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|
Mateusz Guzik
|
8b17e54096
|
vfs: add initial support for CONFIG_DEBUG_VFS
Small collection of macros taken from mmdebug.h Signed-off-by: Mateusz Guzik <mjguzik@gmail.com> Link: https://lore.kernel.org/r/20250209185523.745956-2-mjguzik@gmail.com Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Christian Brauner <brauner@kernel.org> |
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|
Thomas Weißschuh
|
ac1a42f4e4 |
vdso: Remove remnants of architecture-specific time storage
All users of the time releated parts of the vDSO are now using the generic storage implementation. Remove the therefore unnecessary compatibility accessor functions and symbols. Co-developed-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250204-vdso-store-rng-v3-18-13a4669dfc8c@linutronix.de |
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|
Thomas Weißschuh
|
365841e155 |
vdso: Add generic architecture-specific data storage
Some architectures need to expose architecture-specific data to the vDSO. Enable the generic vDSO storage mechanism to both store and map this data. Some architectures require more than a single page, like LoongArch, so prepare for that usecase, too. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250204-vdso-store-rng-v3-7-13a4669dfc8c@linutronix.de |
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|
Thomas Weißschuh
|
51d6ca373f |
vdso: Add generic random data storage
Extend the generic vDSO data storage with a page for the random state data. The random state data is stored in a dedicated page, as the existing storage page is only meant for time-related, time-namespace-aware data. This simplifies to access logic to not need to handle time namespaces anymore and also frees up more space in the time-related page. In case further generic vDSO data store is required it can be added to the random state page. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250204-vdso-store-rng-v3-6-13a4669dfc8c@linutronix.de |
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|
Thomas Weißschuh
|
df7fcbefa7 |
vdso: Add generic time data storage
Historically each architecture defined their own way to store the vDSO data page. Add a generic mechanism to provide storage for that page. Furthermore this generic storage will be extended to also provide uniform storage for *non*-time-related data, like the random state or architecture-specific data. These will have their own pages and data structures, so rename 'vdso_data' into 'vdso_time_data' to make that split clear from the name. Also introduce a new consistent naming scheme for the symbols related to the vDSO, which makes it clear if the symbol is accessible from userspace or kernel space and the type of data behind the symbol. The generic fault handler contains an optimization to prefault the vvar page when the timens page is accessed. This was lifted from s390 and x86. Co-developed-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250204-vdso-store-rng-v3-5-13a4669dfc8c@linutronix.de |
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|
Thomas Weißschuh
|
127b0e05c1 |
vdso: Rename included Makefile
As the Makefile is included into other Makefiles it can not be used to define objects to be built from the current source directory. However the generic datastore will introduce such a local source file. Rename the included Makefile so it is clear how it is to be used and to make room for a regular Makefile in lib/vdso/. Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250204-vdso-store-rng-v3-4-13a4669dfc8c@linutronix.de |
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|
Jakub Kicinski
|
5d6ba5ab85 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.14-rc4). No conflicts or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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|
Thadeu Lima de Souza Cascardo
|
6aa9826330 |
char: misc: improve testing Kconfig description
Describe that it tests the miscdevice API and include the usual disclaimer about KUnit not being fit for production kernels. While at it, also fix KUnit capitalization. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@igalia.com> Link: https://lore.kernel.org/r/20250123123249.4081674-2-cascardo@igalia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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|
Tamir Duberstein
|
158e9d2f33 |
bitmap: remove _check_eq_u32_array
This has been unused since commit
|
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|
Nam Cao
|
b09dffdeb3 |
lib: test_objpool: Switch to use hrtimer_setup()
hrtimer_setup() takes the callback function pointer as argument and initializes the timer completely. Replace hrtimer_init() and the open coded initialization of hrtimer::function with the new setup mechanism. Patch was created by using Coccinelle. Signed-off-by: Nam Cao <namcao@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/edc46fbf290b280ebe67bb0d21599c4c30716b68.1738746821.git.namcao@linutronix.de |
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|
Kemeng Shi
|
8344017aaf |
test_xarray: fix failure in check_pause when CONFIG_XARRAY_MULTI is not defined
In case CONFIG_XARRAY_MULTI is not defined, xa_store_order can store a
multi-index entry but xas_for_each can't tell sbiling entry from valid
entry. So the check_pause failed when we store a multi-index entry and
wish xas_for_each can handle it normally. Avoid to store multi-index
entry when CONFIG_XARRAY_MULTI is disabled to fix the failure.
Link: https://lkml.kernel.org/r/20250213163659.414309-1-shikemeng@huaweicloud.com
Fixes:
|
||
|
Pavel Begunkov
|
f4b78260fc |
lib/iov_iter: fix import_iovec_ubuf iovec management
import_iovec() says that it should always be fine to kfree the iovec
returned in @iovp regardless of the error code. __import_iovec_ubuf()
never reallocates it and thus should clear the pointer even in cases when
copy_iovec_*() fail.
Link: https://lkml.kernel.org/r/378ae26923ffc20fd5e41b4360d673bf47b1775b.1738332461.git.asml.silence@gmail.com
Fixes:
|
||
|
Jakub Kicinski
|
7a7e019713 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.14-rc3). No conflicts or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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|
Tamir Duberstein
|
313b38a6ec |
lib/prime_numbers: convert self-test to KUnit
Extract a private header and convert the prime_numbers self-test to a KUnit test. I considered parameterizing the test using `KUNIT_CASE_PARAM` but didn't see how it was possible since the test logic is entangled with the test parameter generation logic. Signed-off-by: Tamir Duberstein <tamird@gmail.com> Link: https://lore.kernel.org/r/20250208-prime_numbers-kunit-convert-v5-2-b0cb82ae7c7d@gmail.com Signed-off-by: Kees Cook <kees@kernel.org> |
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|
Yu-Chun Lin
|
9ab61886ac |
lib/math: Add Kunit test suite for gcd()
Add a KUnit test suite for the gcd() function. This test suite verifies the correctness of gcd() across various scenarios, including edge cases. Signed-off-by: Yu-Chun Lin <eleanor15x@gmail.com> Reviewed-by: Kuan-Wei Chiu <visitorckw@gmail.com> Link: https://lore.kernel.org/r/20250203075400.3431330-1-eleanor15x@gmail.com Signed-off-by: Kees Cook <kees@kernel.org> |
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|
Tamir Duberstein
|
b341f6fd45 |
blackhole_dev: convert self-test to KUnit
Convert this very simple smoke test to a KUnit test. Add a missing `htons` call that was spotted[0] by kernel test robot <lkp@intel.com> after initial conversion to KUnit. Link: https://lore.kernel.org/oe-kbuild-all/202502090223.qCYMBjWT-lkp@intel.com/ [0] Signed-off-by: Tamir Duberstein <tamird@gmail.com> Link: https://patch.msgid.link/20250208-blackholedev-kunit-convert-v2-1-182db9bd56ec@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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|
Diego Vieira
|
4d557cb499 |
lib/tests/kfifo_kunit.c: add tests for the kfifo structure
Add KUnit tests for the kfifo data structure. They test the vast majority of macros defined in the kfifo header (include/linux/kfifo.h). These are inspired by the existing tests for the doubly linked list in lib/tests/list-test.c (previously at lib/list-test.c) [1]. Note that this patch depends on the patch that moves the KUnit tests on lib/ into lib/tests/ [2]. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/lib/list-test.c?h=v6.11-rc6 [2] https://lore.kernel.org/all/20240720181025.work.002-kees@kernel.org/ Signed-off-by: Diego Vieira <diego.daniel.professional@gmail.com> Reviewed-by: David Gow <davidgow@google.com> Reviewed-by: Rae Moar <rmoar@google.com> Link: https://lore.kernel.org/r/20241202075545.3648096-5-davidgow@google.com Signed-off-by: Kees Cook <kees@kernel.org> |
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|
Kees Cook
|
db6fe4d61e |
lib: Move KUnit tests into tests/ subdirectory
Following from the recent KUnit file naming discussion[1], move all KUnit tests in lib/ into lib/tests/. Link: https://lore.kernel.org/lkml/20240720165441.it.320-kees@kernel.org/ [1] Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org> Acked-by: Jakub Kicinski <kuba@kernel.org> Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Reviewed-by: David Gow <davidgow@google.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Reviewed-by: Rae Moar <rmoar@google.com> Link: https://lore.kernel.org/r/20241202075545.3648096-4-davidgow@google.com Signed-off-by: Kees Cook <kees@kernel.org> |
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|
Bruno Sobreira França
|
84ec093f55 |
lib/math: Add int_log test suite
This commit introduces KUnit tests for the intlog2 and intlog10 functions, which compute logarithms in base 2 and base 10, respectively. The tests cover a range of inputs to ensure the correctness of these functions across common and edge cases. Signed-off-by: Bruno Sobreira França <brunofrancadevsec@gmail.com> Reviewed-by: David Gow <davidgow@google.com> Reviewed-by: Rae Moar <rmoar@google.com> Link: https://lore.kernel.org/r/20241202075545.3648096-3-davidgow@google.com Signed-off-by: Kees Cook <kees@kernel.org> |
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|
Luis Felipe Hernandez
|
3e50ba8fc8 |
lib: math: Move KUnit tests into tests/ subdir
This patch is a follow-up task from a discussion stemming from point 3 in a recent patch introducing the int_pow kunit test [1] and documentation regarding kunit test style and nomenclature [2]. Colocate all kunit test suites in lib/math/tests/ and follow recommended naming convention for files <suite>_kunit.c and kconfig entries CONFIG_<name>_KUNIT_TEST. Link: https://lore.kernel.org/all/CABVgOS=-vh5TqHFCq_jo=ffq8v_nGgr6JsPnOZag3e6+19ysxQ@mail.gmail.com/ [1] Link: https://docs.kernel.org/dev-tools/kunit/style.html [2] Signed-off-by: Luis Felipe Hernandez <luis.hernandez093@gmail.com> Acked-by: Nicolas Pitre <npitre@baylibre.com> Reviewed-by: David Gow <davidgow@google.com> Reviewed-by: Rae Moar <rmoar@google.com> Link: https://lore.kernel.org/r/20241202075545.3648096-2-davidgow@google.com Signed-off-by: Kees Cook <kees@kernel.org> |
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|
Tanya Agarwal
|
af324dc0e2 |
lib: 842: Improve error handling in sw842_compress()
The static code analysis tool "Coverity Scan" pointed the following
implementation details out for further development considerations:
CID 1309755: Unused value
In sw842_compress: A value assigned to a variable is never used. (CWE-563)
returned_value: Assigning value from add_repeat_template(p, repeat_count)
to ret here, but that stored value is overwritten before it can be used.
Conclusion:
Add error handling for the return value from an add_repeat_template()
call.
Fixes:
|
||
|
Eric Biggers
|
68ea3c2ae0 |
lib/crc32: remove "_le" from crc32c base and arch functions
Following the standardization on crc32c() as the lib entry point for the Castagnoli CRC32 instead of the previous mix of crc32c(), crc32c_le(), and __crc32c_le(), make the same change to the underlying base and arch functions that implement it. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250208024911.14936-7-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
c64e6570b4 |
lib/crc32: rename __crc32c_le_combine() to crc32c_combine()
Since the Castagnoli CRC32 is now always just crc32c(), rename __crc32c_le_combine() and __crc32c_le_shift() accordingly. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250208024911.14936-6-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
bc2736fe7e |
lib/crc32: don't bother with pure and const function attributes
Drop the use of __pure and __attribute_const__ from the CRC32 library functions that had them. Both of these are unusual optimizations that don't help properly written code. They seem more likely to cause problems than have any real benefit. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250208024911.14936-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
067bc8717a |
lib/crc64: add support for arch-optimized implementations
Add support for architecture-optimized implementations of the CRC64 library functions, following the approach taken for the CRC32 and CRC-T10DIF library functions. Also take the opportunity to tweak the function prototypes: - Use 'const void *' for the lib entry points (since this is easier for users) but 'const u8 *' for the underlying arch and generic functions (since this is easier for the implementations of these functions). - Don't bother with __pure. It's an unusual optimization that doesn't help properly written code. It's a weird quirk we can do without. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Keith Busch <kbusch@kernel.org> Link: https://lore.kernel.org/r/20250130035130.180676-6-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
23709bd3c4 |
lib/crc_kunit.c: add test and benchmark for CRC64-NVME
Wire up crc64_nvme() to the new CRC unit test and benchmark. This replaces and improves on the test coverage that was lost by removing this CRC variant from the crypto API. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Keith Busch <kbusch@kernel.org> Link: https://lore.kernel.org/r/20250130035130.180676-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
f6c3f6fb32 |
lib/crc64: rename CRC64-Rocksoft to CRC64-NVME
This CRC64 variant comes from the NVME NVM Command Set Specification (https://nvmexpress.org/wp-content/uploads/NVM-Express-NVM-Command-Set-Specification-1.0e-2024.07.29-Ratified.pdf). The "Rocksoft Model CRC Algorithm", published in 1993 and available at https://www.zlib.net/crc_v3.txt, is a generalized CRC algorithm that can calculate any variant of CRC, given a list of parameters such as polynomial, bit order, etc. It is not a CRC variant. The NVME NVM Command Set Specification has a table that gives the "Rocksoft Model Parameters" for the CRC variant it uses. When support for this CRC variant was added to Linux, this table seems to have been misinterpreted as naming the CRC variant the "Rocksoft" CRC. In fact, the table names the CRC variant as the "NVM Express 64b CRC". Most implementations of this CRC variant outside Linux have been calling it CRC64-NVME. Therefore, update Linux to match. While at it, remove the superfluous "update" from the function name, so crc64_rocksoft_update() is now just crc64_nvme(), matching most of the other CRC library functions. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Keith Busch <kbusch@kernel.org> Link: https://lore.kernel.org/r/20250130035130.180676-4-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
feb541bfac |
lib/crc64-rocksoft: stop wrapping the crypto API
Following what was done for the CRC32 and CRC-T10DIF library functions, get rid of the pointless use of the crypto API and make crc64_rocksoft_update() call into the library directly. This is faster and simpler. Remove crc64_rocksoft() (the version of the function that did not take a 'crc' argument) since it is unused. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com> Acked-by: Keith Busch <kbusch@kernel.org> Link: https://lore.kernel.org/r/20250130035130.180676-2-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Linus Torvalds
|
9946eaf552 |
hardening fixes for v6.14-rc2
- Fix stackinit KUnit regression on m68k - Use ARRAY_SIZE() for memtostr*()/strtomem*() -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRSPkdeREjth1dHnSE2KwveOeQkuwUCZ6fBgQAKCRA2KwveOeQk u1HdAQCstqRZjXUqdG1jX56g1cW7RoLDtZC3Y9npyhVByUmFHgEAjsH1gmQcNswX 676kSkJaB3Iv4yQ17ozjlBWEd4xroAs= =YibW -----END PGP SIGNATURE----- Merge tag 'hardening-v6.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening fixes from Kees Cook: "Address a KUnit stack initialization regression that got tickled on m68k, and solve a Clang(v14 and earlier) bug found by 0day: - Fix stackinit KUnit regression on m68k - Use ARRAY_SIZE() for memtostr*()/strtomem*()" * tag 'hardening-v6.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: string.h: Use ARRAY_SIZE() for memtostr*()/strtomem*() compiler.h: Introduce __must_be_byte_array() compiler.h: Move C string helpers into C-only kernel section stackinit: Fix comment for test_small_end stackinit: Keep selftest union size small on m68k |
||
|
Geert Uytterhoeven
|
78bba6097b |
stackinit: Fix comment for test_small_end
In union test_small_end, the small members are three and four.
Fixes:
|
||
|
Kees Cook
|
bb5408801a |
stackinit: Keep selftest union size small on m68k
The stack frame on m68k is very sensitive to the size of what needs to
be stored. Like done for long string testing, reduce the size of the
large trailing struct in the union initialization testing.
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Closes: https://lore.kernel.org/all/CAMuHMdXW8VbtOAixO7w+aDOG70aZtZ50j1Ybcr8B3eYnRUcrcA@mail.gmail.com
Fixes:
|
||
|
Linus Torvalds
|
03cc3579bc |
21 hotfixes. 8 are cc:stable and the remainder address post-6.13 issues.
13 are for MM and 8 are for non-MM. All are singletons, please see the changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ54MEgAKCRDdBJ7gKXxA jlhdAP0evTQ9JX+22DDWSVdWFBbnQ74c5ddFXVQc1LO2G2FhFgD+OXhH8E65Nez5 qGWjb4xgjoQTHS7AL4pYEFYqx/cpbAQ= =rN+l -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2025-02-01-03-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "21 hotfixes. 8 are cc:stable and the remainder address post-6.13 issues. 13 are for MM and 8 are for non-MM. All are singletons, please see the changelogs for details" * tag 'mm-hotfixes-stable-2025-02-01-03-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (21 commits) MAINTAINERS: include linux-mm for xarray maintenance revert "xarray: port tests to kunit" MAINTAINERS: add lib/test_xarray.c mailmap, MAINTAINERS, docs: update Carlos's email address mm/hugetlb: fix hugepage allocation for interleaved memory nodes mm: gup: fix infinite loop within __get_longterm_locked mm, swap: fix reclaim offset calculation error during allocation .mailmap: update email address for Christopher Obbard kfence: skip __GFP_THISNODE allocations on NUMA systems nilfs2: fix possible int overflows in nilfs_fiemap() mm: compaction: use the proper flag to determine watermarks kernel: be more careful about dup_mmap() failures and uprobe registering mm/fake-numa: handle cases with no SRAT info mm: kmemleak: fix upper boundary check for physical address objects mailmap: add an entry for Hamza Mahfooz MAINTAINERS: mailmap: update Yosry Ahmed's email address scripts/gdb: fix aarch64 userspace detection in get_current_task mm/vmscan: accumulate nr_demoted for accurate demotion statistics ocfs2: fix incorrect CPU endianness conversion causing mount failure mm/zsmalloc: add __maybe_unused attribute for is_first_zpdesc() ... |
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Andrew Morton
|
050339050f |
revert "xarray: port tests to kunit"
Revert
|
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Linus Torvalds
|
73512f2a0b |
hardening updates for v6.14-rc1-fix1
- Fix regression in GCC 15's initialization of union members -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRSPkdeREjth1dHnSE2KwveOeQkuwUCZ51BJQAKCRA2KwveOeQk u8+jAP0XoKceMYSQkorO8XI2z0NqiKE6zESp/u4n4Y3rqtetUQEA/SXeh9bKrv1G N0m383oVixeztl8wOpwZII9pQHjDngs= =vOzA -----END PGP SIGNATURE----- Merge tag 'hardening-v6.14-rc1-fix1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening fixes from Kees Cook: "This is a fix for the soon to be released GCC 15 which has regressed its initialization of unions when performing explicit initialization (i.e. a general problem, not specifically a hardening problem; we're just carrying the fix). Details in the final patch, Acked by Masahiro, with updated selftests to validate the fix" * tag 'hardening-v6.14-rc1-fix1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: kbuild: Use -fzero-init-padding-bits=all stackinit: Add union initialization to selftests stackinit: Add old-style zero-init syntax to struct tests |
||
|
Kees Cook
|
e71a29db79 |
stackinit: Add union initialization to selftests
The stack initialization selftests were checking scalars, strings,
and structs, but not unions. Add union tests (which are mostly identical
setup to structs). This catches the recent union initialization behavioral
changes seen in GCC 15. Before GCC 15, this new test passes:
ok 18 test_small_start_old_zero
With GCC 15, it fails:
not ok 18 test_small_start_old_zero
Specifically, a union with a larger member where a smaller member is
initialized with the older "= { 0 }" syntax:
union test_small_start {
char one:1;
char two;
short three;
unsigned long four;
struct big_struct {
unsigned long array[8];
} big;
};
This is a regression in compiler behavior that Linux has depended on.
GCC does not seem likely to fix it, instead suggesting that affected
projects start using -fzero-init-padding-bits=unions:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118403
Link: https://lore.kernel.org/r/20250127191031.245214-2-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
|
||
|
Kees Cook
|
ad9f265c73 |
stackinit: Add old-style zero-init syntax to struct tests
The deprecated way to do a full zero init of a structure is with "= { 0 }",
but we weren't testing this style. Add it.
Link: https://lore.kernel.org/r/20250127191031.245214-1-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
|
||
|
Linus Torvalds
|
fed3819bac |
CRC fixes for 6.14
Simplify the kconfig options for controlling which CRC implementations are built into the kernel, as was requested by Linus. This means making the option to disable the arch code visible only when CONFIG_EXPERT=y, and standardizing on a single generic implementation of CRC32. This has been in linux-next since last Friday. The late rebase was just to add review tags. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQSacvsUNc7UX4ntmEPzXCl4vpKOKwUCZ5pmThQcZWJpZ2dlcnNA Z29vZ2xlLmNvbQAKCRDzXCl4vpKOK92WAP450K/kz6nOmkIE2ARDHrAEc7D505jw g+sW2YqrTRM8kQEA9/DO9zumCS96cZu/GlwGlC6iSNeV9Sma3MeieHmNiAM= =jat5 -----END PGP SIGNATURE----- Merge tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux Pull CRC cleanups from Eric Biggers: "Simplify the kconfig options for controlling which CRC implementations are built into the kernel, as was requested by Linus. This means making the option to disable the arch code visible only when CONFIG_EXPERT=y, and standardizing on a single generic implementation of CRC32" * tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: lib/crc32: remove other generic implementations lib/crc: simplify the kconfig options for CRC implementations |
||
|
Linus Torvalds
|
af13ff1c33 |
Summary:
All ctl_table declared outside of functions and that remain unmodified after initialization are const qualified. This prevents unintended modifications to proc_handler function pointers by placing them in the .rodata section. This is a continuation of the tree-wide effort started a few releases ago with the constification of the ctl_table struct arguments in the sysctl API done in |
||
|
Eric Biggers
|
5e3c1c48fa |
lib/crc32: remove other generic implementations
Now that we've standardized on the byte-by-byte implementation of CRC32 as the only generic implementation (see previous commit for the rationale), remove the code for the other implementations. Tested with crc_kunit. Link: https://lore.kernel.org/r/20250123212904.118683-3-ebiggers@kernel.org Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
b0430f39de |
lib/crc: simplify the kconfig options for CRC implementations
Make the following simplifications to the kconfig options for choosing CRC implementations for CRC32 and CRC_T10DIF: 1. Make the option to disable the arch-optimized code be visible only when CONFIG_EXPERT=y. 2. Make a single option control the inclusion of the arch-optimized code for all enabled CRC variants. 3. Make CRC32_SARWATE (a.k.a. slice-by-1 or byte-by-byte) be the only generic CRC32 implementation. The result is there is now just one option, CRC_OPTIMIZATIONS, which is default y and can be disabled only when CONFIG_EXPERT=y. Rationale: 1. Enabling the arch-optimized code is nearly always the right choice. However, people trying to build the tiniest kernel possible would find some use in disabling it. Anything we add to CRC32 is de facto unconditional, given that CRC32 gets selected by something in nearly all kernels. And unfortunately enabling the arch CRC code does not eliminate the need to build the generic CRC code into the kernel too, due to CPU feature dependencies. The size of the arch CRC code will also increase slightly over time as more CRC variants get added and more implementations targeting different instruction set extensions get added. Thus, it seems worthwhile to still provide an option to disable it, but it should be considered an expert-level tweak. 2. Considering the use case described in (1), there doesn't seem to be sufficient value in making the arch-optimized CRC code be independently configurable for different CRC variants. Note also that multiple variants were already grouped together, e.g. CONFIG_CRC32 actually enables three different variants of CRC32. 3. The bit-by-bit implementation is uselessly slow, whereas slice-by-n for n=4 and n=8 use tables that are inconveniently large: 4096 bytes and 8192 bytes respectively, compared to 1024 bytes for n=1. Higher n gives higher instruction-level parallelism, so higher n easily wins on traditional microbenchmarks on most CPUs. However, the larger tables, which are accessed randomly, can be harmful in real-world situations where the dcache may be cold or useful data may need be evicted from the dcache. Meanwhile, today most architectures have much faster CRC32 implementations using dedicated CRC32 instructions or carryless multiplication instructions anyway, which make the generic code obsolete in most cases especially on long messages. Another reason for going with n=1 is that this is already what is used by all the other CRC variants in the kernel. CRC32 was unique in having support for larger tables. But as per the above this can be considered an outdated optimization. The standardization on slice-by-1 a.k.a. CRC32_SARWATE makes much of the code in lib/crc32.c unused. A later patch will clean that up. Link: https://lore.kernel.org/r/20250123212904.118683-2-ebiggers@kernel.org Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Thomas Gleixner
|
b9a4952067 |
rcuref: Plug slowpath race in rcuref_put()
Kernel test robot reported an "imbalanced put" in the rcuref_put() slow
path, which turned out to be a false positive. Consider the following race:
ref = 0 (via rcuref_init(ref, 1))
T1 T2
rcuref_put(ref)
-> atomic_add_negative_release(-1, ref) # ref -> 0xffffffff
-> rcuref_put_slowpath(ref)
rcuref_get(ref)
-> atomic_add_negative_relaxed(1, &ref->refcnt)
-> return true; # ref -> 0
rcuref_put(ref)
-> atomic_add_negative_release(-1, ref) # ref -> 0xffffffff
-> rcuref_put_slowpath()
-> cnt = atomic_read(&ref->refcnt); # cnt -> 0xffffffff / RCUREF_NOREF
-> atomic_try_cmpxchg_release(&ref->refcnt, &cnt, RCUREF_DEAD)) # ref -> 0xe0000000 / RCUREF_DEAD
-> return true
-> cnt = atomic_read(&ref->refcnt); # cnt -> 0xe0000000 / RCUREF_DEAD
-> if (cnt > RCUREF_RELEASED) # 0xe0000000 > 0xc0000000
-> WARN_ONCE(cnt >= RCUREF_RELEASED, "rcuref - imbalanced put()")
The problem is the additional read in the slow path (after it
decremented to RCUREF_NOREF) which can happen after the counter has been
marked RCUREF_DEAD.
Prevent this by reusing the return value of the decrement. Now every "final"
put uses RCUREF_NOREF in the slow path and attempts the final cmpxchg() to
RCUREF_DEAD.
[ bigeasy: Add changelog ]
Fixes:
|
||
|
Linus Torvalds
|
2ab002c755 |
Driver core and debugfs updates
Here is the big set of driver core and debugfs updates for 6.14-rc1.
It's coming late in the merge cycle as there are a number of merge
conflicts with your tree now, and I wanted to make sure they were
working properly. To resolve them, look in linux-next, and I will send
the "fixup" patch as a response to the pull request.
Included in here is a bunch of driver core, PCI, OF, and platform rust
bindings (all acked by the different subsystem maintainers), hence the
merge conflict with the rust tree, and some driver core api updates to
mark things as const, which will also require some fixups due to new
stuff coming in through other trees in this merge window.
There are also a bunch of debugfs updates from Al, and there is at least
one user that does have a regression with these, but Al is working on
tracking down the fix for it. In my use (and everyone else's linux-next
use), it does not seem like a big issue at the moment.
Here's a short list of the things in here:
- driver core bindings for PCI, platform, OF, and some i/o functions.
We are almost at the "write a real driver in rust" stage now,
depending on what you want to do.
- misc device rust bindings and a sample driver to show how to use
them
- debugfs cleanups in the fs as well as the users of the fs api for
places where drivers got it wrong or were unnecessarily doing things
in complex ways.
- driver core const work, making more of the api take const * for
different parameters to make the rust bindings easier overall.
- other small fixes and updates
All of these have been in linux-next with all of the aforementioned
merge conflicts, and the one debugfs issue, which looks to be resolved
"soon".
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core and debugfs updates from Greg KH:
"Here is the big set of driver core and debugfs updates for 6.14-rc1.
Included in here is a bunch of driver core, PCI, OF, and platform rust
bindings (all acked by the different subsystem maintainers), hence the
merge conflict with the rust tree, and some driver core api updates to
mark things as const, which will also require some fixups due to new
stuff coming in through other trees in this merge window.
There are also a bunch of debugfs updates from Al, and there is at
least one user that does have a regression with these, but Al is
working on tracking down the fix for it. In my use (and everyone
else's linux-next use), it does not seem like a big issue at the
moment.
Here's a short list of the things in here:
- driver core rust bindings for PCI, platform, OF, and some i/o
functions.
We are almost at the "write a real driver in rust" stage now,
depending on what you want to do.
- misc device rust bindings and a sample driver to show how to use
them
- debugfs cleanups in the fs as well as the users of the fs api for
places where drivers got it wrong or were unnecessarily doing
things in complex ways.
- driver core const work, making more of the api take const * for
different parameters to make the rust bindings easier overall.
- other small fixes and updates
All of these have been in linux-next with all of the aforementioned
merge conflicts, and the one debugfs issue, which looks to be resolved
"soon""
* tag 'driver-core-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (95 commits)
rust: device: Use as_char_ptr() to avoid explicit cast
rust: device: Replace CString with CStr in property_present()
devcoredump: Constify 'struct bin_attribute'
devcoredump: Define 'struct bin_attribute' through macro
rust: device: Add property_present()
saner replacement for debugfs_rename()
orangefs-debugfs: don't mess with ->d_name
octeontx2: don't mess with ->d_parent or ->d_parent->d_name
arm_scmi: don't mess with ->d_parent->d_name
slub: don't mess with ->d_name
sof-client-ipc-flood-test: don't mess with ->d_name
qat: don't mess with ->d_name
xhci: don't mess with ->d_iname
mtu3: don't mess wiht ->d_iname
greybus/camera - stop messing with ->d_iname
mediatek: stop messing with ->d_iname
netdevsim: don't embed file_operations into your structs
b43legacy: make use of debugfs_get_aux()
b43: stop embedding struct file_operations into their objects
carl9170: stop embedding file_operations into their objects
...
|
||
|
Joel Granados
|
1751f872cc |
treewide: const qualify ctl_tables where applicable
Add the const qualifier to all the ctl_tables in the tree except for
watchdog_hardlockup_sysctl, memory_allocation_profiling_sysctls,
loadpin_sysctl_table and the ones calling register_net_sysctl (./net,
drivers/inifiniband dirs). These are special cases as they use a
registration function with a non-const qualified ctl_table argument or
modify the arrays before passing them on to the registration function.
Constifying ctl_table structs will prevent the modification of
proc_handler function pointers as the arrays would reside in .rodata.
This is made possible after commit
|
||
|
Linus Torvalds
|
13845bdc86 |
Char/Misc/IIO driver updates for 6.14-rc1
Here is the "big" set of char/misc/iio and other smaller driver
subsystem updates for 6.14-rc1. Loads of different things in here this
development cycle, highlights are:
- ntsync "driver" to handle Windows locking types enabling Wine to
work much better on many workloads (i.e. games). The driver
framework was in 6.13, but now it's enabled and fully working
properly. Should make many SteamOS users happy. Even comes with
tests!
- Large IIO driver updates and bugfixes
- FPGA driver updates
- Coresight driver updates
- MHI driver updates
- PPS driver updatesa
- const bin_attribute reworking for many drivers
- binder driver updates
- smaller driver updates and fixes
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 'char-misc-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull Char/Misc/IIO driver updates from Greg KH:
"Here is the "big" set of char/misc/iio and other smaller driver
subsystem updates for 6.14-rc1. Loads of different things in here this
development cycle, highlights are:
- ntsync "driver" to handle Windows locking types enabling Wine to
work much better on many workloads (i.e. games). The driver
framework was in 6.13, but now it's enabled and fully working
properly. Should make many SteamOS users happy. Even comes with
tests!
- Large IIO driver updates and bugfixes
- FPGA driver updates
- Coresight driver updates
- MHI driver updates
- PPS driver updatesa
- const bin_attribute reworking for many drivers
- binder driver updates
- smaller driver updates and fixes
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (311 commits)
ntsync: Fix reference leaks in the remaining create ioctls.
spmi: hisi-spmi-controller: Drop duplicated OF node assignment in spmi_controller_probe()
spmi: Set fwnode for spmi devices
ntsync: fix a file reference leak in drivers/misc/ntsync.c
scripts/tags.sh: Don't tag usages of DECLARE_BITMAP
dt-bindings: interconnect: qcom,msm8998-bwmon: Add SM8750 CPU BWMONs
dt-bindings: interconnect: OSM L3: Document sm8650 OSM L3 compatible
dt-bindings: interconnect: qcom-bwmon: Document QCS615 bwmon compatibles
interconnect: sm8750: Add missing const to static qcom_icc_desc
memstick: core: fix kernel-doc notation
intel_th: core: fix kernel-doc warnings
binder: log transaction code on failure
iio: dac: ad3552r-hs: clear reset status flag
iio: dac: ad3552r-common: fix ad3541/2r ranges
iio: chemical: bme680: Fix uninitialized variable in __bme680_read_raw()
misc: fastrpc: Fix copy buffer page size
misc: fastrpc: Fix registered buffer page address
misc: fastrpc: Deregister device nodes properly in error scenarios
nvmem: core: improve range check for nvmem_cell_write()
nvmem: qcom-spmi-sdam: Set size in struct nvmem_config
...
|
||
|
Linus Torvalds
|
9c5968db9e |
The various patchsets are summarized below. Plus of course many
indivudual patches which are described in their changelogs. - "Allocate and free frozen pages" from Matthew Wilcox reorganizes the page allocator so we end up with the ability to allocate and free zero-refcount pages. So that callers (ie, slab) can avoid a refcount inc & dec. - "Support large folios for tmpfs" from Baolin Wang teaches tmpfs to use large folios other than PMD-sized ones. - "Fix mm/rodata_test" from Petr Tesarik performs some maintenance and fixes for this small built-in kernel selftest. - "mas_anode_descend() related cleanup" from Wei Yang tidies up part of the mapletree code. - "mm: fix format issues and param types" from Keren Sun implements a few minor code cleanups. - "simplify split calculation" from Wei Yang provides a few fixes and a test for the mapletree code. - "mm/vma: make more mmap logic userland testable" from Lorenzo Stoakes continues the work of moving vma-related code into the (relatively) new mm/vma.c. - "mm/page_alloc: gfp flags cleanups for alloc_contig_*()" from David Hildenbrand cleans up and rationalizes handling of gfp flags in the page allocator. - "readahead: Reintroduce fix for improper RA window sizing" from Jan Kara is a second attempt at fixing a readahead window sizing issue. It should reduce the amount of unnecessary reading. - "synchronously scan and reclaim empty user PTE pages" from Qi Zheng addresses an issue where "huge" amounts of pte pagetables are accumulated (https://lore.kernel.org/lkml/cover.1718267194.git.zhengqi.arch@bytedance.com/). Qi's series addresses this windup by synchronously freeing PTE memory within the context of madvise(MADV_DONTNEED). - "selftest/mm: Remove warnings found by adding compiler flags" from Muhammad Usama Anjum fixes some build warnings in the selftests code when optional compiler warnings are enabled. - "mm: don't use __GFP_HARDWALL when migrating remote pages" from David Hildenbrand tightens the allocator's observance of __GFP_HARDWALL. - "pkeys kselftests improvements" from Kevin Brodsky implements various fixes and cleanups in the MM selftests code, mainly pertaining to the pkeys tests. - "mm/damon: add sample modules" from SeongJae Park enhances DAMON to estimate application working set size. - "memcg/hugetlb: Rework memcg hugetlb charging" from Joshua Hahn provides some cleanups to memcg's hugetlb charging logic. - "mm/swap_cgroup: remove global swap cgroup lock" from Kairui Song removes the global swap cgroup lock. A speedup of 10% for a tmpfs-based kernel build was demonstrated. - "zram: split page type read/write handling" from Sergey Senozhatsky has several fixes and cleaups for zram in the area of zram_write_page(). A watchdog softlockup warning was eliminated. - "move pagetable_*_dtor() to __tlb_remove_table()" from Kevin Brodsky cleans up the pagetable destructor implementations. A rare use-after-free race is fixed. - "mm/debug: introduce and use VM_WARN_ON_VMG()" from Lorenzo Stoakes simplifies and cleans up the debugging code in the VMA merging logic. - "Account page tables at all levels" from Kevin Brodsky cleans up and regularizes the pagetable ctor/dtor handling. This results in improvements in accounting accuracy. - "mm/damon: replace most damon_callback usages in sysfs with new core functions" from SeongJae Park cleans up and generalizes DAMON's sysfs file interface logic. - "mm/damon: enable page level properties based monitoring" from SeongJae Park increases the amount of information which is presented in response to DAMOS actions. - "mm/damon: remove DAMON debugfs interface" from SeongJae Park removes DAMON's long-deprecated debugfs interfaces. Thus the migration to sysfs is completed. - "mm/hugetlb: Refactor hugetlb allocation resv accounting" from Peter Xu cleans up and generalizes the hugetlb reservation accounting. - "mm: alloc_pages_bulk: small API refactor" from Luiz Capitulino removes a never-used feature of the alloc_pages_bulk() interface. - "mm/damon: extend DAMOS filters for inclusion" from SeongJae Park extends DAMOS filters to support not only exclusion (rejecting), but also inclusion (allowing) behavior. - "Add zpdesc memory descriptor for zswap.zpool" from Alex Shi "introduces a new memory descriptor for zswap.zpool that currently overlaps with struct page for now. This is part of the effort to reduce the size of struct page and to enable dynamic allocation of memory descriptors." - "mm, swap: rework of swap allocator locks" from Kairui Song redoes and simplifies the swap allocator locking. A speedup of 400% was demonstrated for one workload. As was a 35% reduction for kernel build time with swap-on-zram. - "mm: update mips to use do_mmap(), make mmap_region() internal" from Lorenzo Stoakes reworks MIPS's use of mmap_region() so that mmap_region() can be made MM-internal. - "mm/mglru: performance optimizations" from Yu Zhao fixes a few MGLRU regressions and otherwise improves MGLRU performance. - "Docs/mm/damon: add tuning guide and misc updates" from SeongJae Park updates DAMON documentation. - "Cleanup for memfd_create()" from Isaac Manjarres does that thing. - "mm: hugetlb+THP folio and migration cleanups" from David Hildenbrand provides various cleanups in the areas of hugetlb folios, THP folios and migration. - "Uncached buffered IO" from Jens Axboe implements the new RWF_DONTCACHE flag which provides synchronous dropbehind for pagecache reading and writing. To permite userspace to address issues with massive buildup of useless pagecache when reading/writing fast devices. - "selftests/mm: virtual_address_range: Reduce memory" from Thomas Weißschuh fixes and optimizes some of the MM selftests. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ5a+cwAKCRDdBJ7gKXxA jtoyAP9R58oaOKPJuTizEKKXvh/RpMyD6sYcz/uPpnf+cKTZxQEAqfVznfWlw/Lz uC3KRZYhmd5YrxU4o+qjbzp9XWX/xAE= =Ib2s -----END PGP SIGNATURE----- Merge tag 'mm-stable-2025-01-26-14-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: "The various patchsets are summarized below. Plus of course many indivudual patches which are described in their changelogs. - "Allocate and free frozen pages" from Matthew Wilcox reorganizes the page allocator so we end up with the ability to allocate and free zero-refcount pages. So that callers (ie, slab) can avoid a refcount inc & dec - "Support large folios for tmpfs" from Baolin Wang teaches tmpfs to use large folios other than PMD-sized ones - "Fix mm/rodata_test" from Petr Tesarik performs some maintenance and fixes for this small built-in kernel selftest - "mas_anode_descend() related cleanup" from Wei Yang tidies up part of the mapletree code - "mm: fix format issues and param types" from Keren Sun implements a few minor code cleanups - "simplify split calculation" from Wei Yang provides a few fixes and a test for the mapletree code - "mm/vma: make more mmap logic userland testable" from Lorenzo Stoakes continues the work of moving vma-related code into the (relatively) new mm/vma.c - "mm/page_alloc: gfp flags cleanups for alloc_contig_*()" from David Hildenbrand cleans up and rationalizes handling of gfp flags in the page allocator - "readahead: Reintroduce fix for improper RA window sizing" from Jan Kara is a second attempt at fixing a readahead window sizing issue. It should reduce the amount of unnecessary reading - "synchronously scan and reclaim empty user PTE pages" from Qi Zheng addresses an issue where "huge" amounts of pte pagetables are accumulated: https://lore.kernel.org/lkml/cover.1718267194.git.zhengqi.arch@bytedance.com/ Qi's series addresses this windup by synchronously freeing PTE memory within the context of madvise(MADV_DONTNEED) - "selftest/mm: Remove warnings found by adding compiler flags" from Muhammad Usama Anjum fixes some build warnings in the selftests code when optional compiler warnings are enabled - "mm: don't use __GFP_HARDWALL when migrating remote pages" from David Hildenbrand tightens the allocator's observance of __GFP_HARDWALL - "pkeys kselftests improvements" from Kevin Brodsky implements various fixes and cleanups in the MM selftests code, mainly pertaining to the pkeys tests - "mm/damon: add sample modules" from SeongJae Park enhances DAMON to estimate application working set size - "memcg/hugetlb: Rework memcg hugetlb charging" from Joshua Hahn provides some cleanups to memcg's hugetlb charging logic - "mm/swap_cgroup: remove global swap cgroup lock" from Kairui Song removes the global swap cgroup lock. A speedup of 10% for a tmpfs-based kernel build was demonstrated - "zram: split page type read/write handling" from Sergey Senozhatsky has several fixes and cleaups for zram in the area of zram_write_page(). A watchdog softlockup warning was eliminated - "move pagetable_*_dtor() to __tlb_remove_table()" from Kevin Brodsky cleans up the pagetable destructor implementations. A rare use-after-free race is fixed - "mm/debug: introduce and use VM_WARN_ON_VMG()" from Lorenzo Stoakes simplifies and cleans up the debugging code in the VMA merging logic - "Account page tables at all levels" from Kevin Brodsky cleans up and regularizes the pagetable ctor/dtor handling. This results in improvements in accounting accuracy - "mm/damon: replace most damon_callback usages in sysfs with new core functions" from SeongJae Park cleans up and generalizes DAMON's sysfs file interface logic - "mm/damon: enable page level properties based monitoring" from SeongJae Park increases the amount of information which is presented in response to DAMOS actions - "mm/damon: remove DAMON debugfs interface" from SeongJae Park removes DAMON's long-deprecated debugfs interfaces. Thus the migration to sysfs is completed - "mm/hugetlb: Refactor hugetlb allocation resv accounting" from Peter Xu cleans up and generalizes the hugetlb reservation accounting - "mm: alloc_pages_bulk: small API refactor" from Luiz Capitulino removes a never-used feature of the alloc_pages_bulk() interface - "mm/damon: extend DAMOS filters for inclusion" from SeongJae Park extends DAMOS filters to support not only exclusion (rejecting), but also inclusion (allowing) behavior - "Add zpdesc memory descriptor for zswap.zpool" from Alex Shi introduces a new memory descriptor for zswap.zpool that currently overlaps with struct page for now. This is part of the effort to reduce the size of struct page and to enable dynamic allocation of memory descriptors - "mm, swap: rework of swap allocator locks" from Kairui Song redoes and simplifies the swap allocator locking. A speedup of 400% was demonstrated for one workload. As was a 35% reduction for kernel build time with swap-on-zram - "mm: update mips to use do_mmap(), make mmap_region() internal" from Lorenzo Stoakes reworks MIPS's use of mmap_region() so that mmap_region() can be made MM-internal - "mm/mglru: performance optimizations" from Yu Zhao fixes a few MGLRU regressions and otherwise improves MGLRU performance - "Docs/mm/damon: add tuning guide and misc updates" from SeongJae Park updates DAMON documentation - "Cleanup for memfd_create()" from Isaac Manjarres does that thing - "mm: hugetlb+THP folio and migration cleanups" from David Hildenbrand provides various cleanups in the areas of hugetlb folios, THP folios and migration - "Uncached buffered IO" from Jens Axboe implements the new RWF_DONTCACHE flag which provides synchronous dropbehind for pagecache reading and writing. To permite userspace to address issues with massive buildup of useless pagecache when reading/writing fast devices - "selftests/mm: virtual_address_range: Reduce memory" from Thomas Weißschuh fixes and optimizes some of the MM selftests" * tag 'mm-stable-2025-01-26-14-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (321 commits) mm/compaction: fix UBSAN shift-out-of-bounds warning s390/mm: add missing ctor/dtor on page table upgrade kasan: sw_tags: use str_on_off() helper in kasan_init_sw_tags() tools: add VM_WARN_ON_VMG definition mm/damon/core: use str_high_low() helper in damos_wmark_wait_us() seqlock: add missing parameter documentation for raw_seqcount_try_begin() mm/page-writeback: consolidate wb_thresh bumping logic into __wb_calc_thresh mm/page_alloc: remove the incorrect and misleading comment zram: remove zcomp_stream_put() from write_incompressible_page() mm: separate move/undo parts from migrate_pages_batch() mm/kfence: use str_write_read() helper in get_access_type() selftests/mm/mkdirty: fix memory leak in test_uffdio_copy() kasan: hw_tags: Use str_on_off() helper in kasan_init_hw_tags() selftests/mm: virtual_address_range: avoid reading from VM_IO mappings selftests/mm: vm_util: split up /proc/self/smaps parsing selftests/mm: virtual_address_range: unmap chunks after validation selftests/mm: virtual_address_range: mmap() without PROT_WRITE selftests/memfd/memfd_test: fix possible NULL pointer dereference mm: add FGP_DONTCACHE folio creation flag mm: call filemap_fdatawrite_range_kick() after IOCB_DONTCACHE issue ... |
||
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Linus Torvalds
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c159dfbdd4 |
Mainly individually changelogged singleton patches. The patch series in
this pull are:
- "lib min_heap: Improve min_heap safety, testing, and documentation"
from Kuan-Wei Chiu provides various tightenings to the min_heap library
code.
- "xarray: extract __xa_cmpxchg_raw" from Tamir Duberstein preforms some
cleanup and Rust preparation in the xarray library code.
- "Update reference to include/asm-<arch>" from Geert Uytterhoeven fixes
pathnames in some code comments.
- "Converge on using secs_to_jiffies()" from Easwar Hariharan uses the
new secs_to_jiffies() in various places where that is appropriate.
- "ocfs2, dlmfs: convert to the new mount API" from Eric Sandeen
switches two filesystems to the new mount API.
- "Convert ocfs2 to use folios" from Matthew Wilcox does that.
- "Remove get_task_comm() and print task comm directly" from Yafang Shao
removes now-unneeded calls to get_task_comm() in various places.
- "squashfs: reduce memory usage and update docs" from Phillip Lougher
implements some memory savings in squashfs and performs some
maintainability work.
- "lib: clarify comparison function requirements" from Kuan-Wei Chiu
tightens the sort code's behaviour and adds some maintenance work.
- "nilfs2: protect busy buffer heads from being force-cleared" from
Ryusuke Konishi fixes an issues in nlifs when the fs is presented with a
corrupted image.
- "nilfs2: fix kernel-doc comments for function return values" from
Ryusuke Konishi fixes some nilfs kerneldoc.
- "nilfs2: fix issues with rename operations" from Ryusuke Konishi
addresses some nilfs BUG_ONs which syzbot was able to trigger.
- "minmax.h: Cleanups and minor optimisations" from David Laight
does some maintenance work on the min/max library code.
- "Fixes and cleanups to xarray" from Kemeng Shi does maintenance work
on the xarray library code.
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Merge tag 'mm-nonmm-stable-2025-01-24-23-16' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
"Mainly individually changelogged singleton patches. The patch series
in this pull are:
- "lib min_heap: Improve min_heap safety, testing, and documentation"
from Kuan-Wei Chiu provides various tightenings to the min_heap
library code
- "xarray: extract __xa_cmpxchg_raw" from Tamir Duberstein preforms
some cleanup and Rust preparation in the xarray library code
- "Update reference to include/asm-<arch>" from Geert Uytterhoeven
fixes pathnames in some code comments
- "Converge on using secs_to_jiffies()" from Easwar Hariharan uses
the new secs_to_jiffies() in various places where that is
appropriate
- "ocfs2, dlmfs: convert to the new mount API" from Eric Sandeen
switches two filesystems to the new mount API
- "Convert ocfs2 to use folios" from Matthew Wilcox does that
- "Remove get_task_comm() and print task comm directly" from Yafang
Shao removes now-unneeded calls to get_task_comm() in various
places
- "squashfs: reduce memory usage and update docs" from Phillip
Lougher implements some memory savings in squashfs and performs
some maintainability work
- "lib: clarify comparison function requirements" from Kuan-Wei Chiu
tightens the sort code's behaviour and adds some maintenance work
- "nilfs2: protect busy buffer heads from being force-cleared" from
Ryusuke Konishi fixes an issues in nlifs when the fs is presented
with a corrupted image
- "nilfs2: fix kernel-doc comments for function return values" from
Ryusuke Konishi fixes some nilfs kerneldoc
- "nilfs2: fix issues with rename operations" from Ryusuke Konishi
addresses some nilfs BUG_ONs which syzbot was able to trigger
- "minmax.h: Cleanups and minor optimisations" from David Laight does
some maintenance work on the min/max library code
- "Fixes and cleanups to xarray" from Kemeng Shi does maintenance
work on the xarray library code"
* tag 'mm-nonmm-stable-2025-01-24-23-16' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (131 commits)
ocfs2: use str_yes_no() and str_no_yes() helper functions
include/linux/lz4.h: add some missing macros
Xarray: use xa_mark_t in xas_squash_marks() to keep code consistent
Xarray: remove repeat check in xas_squash_marks()
Xarray: distinguish large entries correctly in xas_split_alloc()
Xarray: move forward index correctly in xas_pause()
Xarray: do not return sibling entries from xas_find_marked()
ipc/util.c: complete the kernel-doc function descriptions
gcov: clang: use correct function param names
latencytop: use correct kernel-doc format for func params
minmax.h: remove some #defines that are only expanded once
minmax.h: simplify the variants of clamp()
minmax.h: move all the clamp() definitions after the min/max() ones
minmax.h: use BUILD_BUG_ON_MSG() for the lo < hi test in clamp()
minmax.h: reduce the #define expansion of min(), max() and clamp()
minmax.h: update some comments
minmax.h: add whitespace around operators and after commas
nilfs2: do not update mtime of renamed directory that is not moved
nilfs2: handle errors that nilfs_prepare_chunk() may return
CREDITS: fix spelling mistake
...
|
||
|
Guo Weikang
|
c6f239796b |
mm/memblock: add memblock_alloc_or_panic interface
Before SLUB initialization, various subsystems used memblock_alloc to allocate memory. In most cases, when memory allocation fails, an immediate panic is required. To simplify this behavior and reduce repetitive checks, introduce `memblock_alloc_or_panic`. This function ensures that memory allocation failures result in a panic automatically, improving code readability and consistency across subsystems that require this behavior. [guoweikang.kernel@gmail.com: arch/s390: save_area_alloc default failure behavior changed to panic] Link: https://lkml.kernel.org/r/20250109033136.2845676-1-guoweikang.kernel@gmail.com Link: https://lore.kernel.org/lkml/Z2fknmnNtiZbCc7x@kernel.org/ Link: https://lkml.kernel.org/r/20250102072528.650926-1-guoweikang.kernel@gmail.com Signed-off-by: Guo Weikang <guoweikang.kernel@gmail.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> [s390] Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Suren Baghdasaryan
|
0743877931 |
alloc_tag: avoid current->alloc_tag manipulations when profiling is disabled
When memory allocation profiling is disabled there is no need to update
current->alloc_tag and these manipulations add unnecessary overhead. Fix
the overhead by skipping these extra updates.
I ran comprehensive testing on Pixel 6 on Big, Medium and Little cores:
Overhead before fixes Overhead after fixes
slab alloc page alloc slab alloc page alloc
Big 6.21% 5.32% 3.31% 4.93%
Medium 4.51% 5.05% 3.79% 4.39%
Little 7.62% 1.82% 6.68% 1.02%
This is an allocation microbenchmark doing allocations in a tight loop.
Not a really realistic scenario and useful only to make performance
comparisons.
Link: https://lkml.kernel.org/r/20241226211639.1357704-1-surenb@google.com
Fixes:
|
||
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Luiz Capitulino
|
6bf9b5b40a |
mm: alloc_pages_bulk: rename API
The previous commit removed the page_list argument from alloc_pages_bulk_noprof() along with the alloc_pages_bulk_list() function. Now that only the *_array() flavour of the API remains, we can do the following renaming (along with the _noprof() ones): alloc_pages_bulk_array -> alloc_pages_bulk alloc_pages_bulk_array_mempolicy -> alloc_pages_bulk_mempolicy alloc_pages_bulk_array_node -> alloc_pages_bulk_node Link: https://lkml.kernel.org/r/275a3bbc0be20fbe9002297d60045e67ab3d4ada.1734991165.git.luizcap@redhat.com Signed-off-by: Luiz Capitulino <luizcap@redhat.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Maninder Singh
|
30cee1e486 |
lib/list_debug.c: add object information in case of invalid object
As of now during link list corruption it prints about cluprit address and its wrong value, but sometime it is not enough to catch the actual issue point. If it prints allocation and free path of that corrupted node, it will be a lot easier to find and fix the issues. Adding the same information when data mismatch is found in link list debug data: [ 14.243055] slab kmalloc-32 start ffff0000cda19320 data offset 32 pointer offset 8 size 32 allocated at add_to_list+0x28/0xb0 [ 14.245259] __kmalloc_cache_noprof+0x1c4/0x358 [ 14.245572] add_to_list+0x28/0xb0 ... [ 14.248632] do_el0_svc_compat+0x1c/0x34 [ 14.249018] el0_svc_compat+0x2c/0x80 [ 14.249244] Free path: [ 14.249410] kfree+0x24c/0x2f0 [ 14.249724] do_force_corruption+0xbc/0x100 ... [ 14.252266] el0_svc_common.constprop.0+0x40/0xe0 [ 14.252540] do_el0_svc_compat+0x1c/0x34 [ 14.252763] el0_svc_compat+0x2c/0x80 [ 14.253071] ------------[ cut here ]------------ [ 14.253303] list_del corruption. next->prev should be ffff0000cda192a8, but was 6b6b6b6b6b6b6b6b. (next=ffff0000cda19348) [ 14.254255] WARNING: CPU: 3 PID: 84 at lib/list_debug.c:65 __list_del_entry_valid_or_report+0x158/0x164 Moved prototype of mem_dump_obj() to bug.h, as mm.h can not be included in bug.h. Link: https://lkml.kernel.org/r/20241230101043.53773-1-maninder1.s@samsung.com Signed-off-by: Maninder Singh <maninder1.s@samsung.com> Acked-by: Jan Kara <jack@suse.cz> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Christian Brauner <brauner@kernel.org> Cc: Marco Elver <elver@google.com> Cc: Rohit Thapliyal <r.thapliyal@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Liam R. Howlett
|
b02fcc082a |
test_maple_tree: test exhausted upper limit of mtree_alloc_cyclic()
When the upper bound of the search is exhausted, the maple state may be returned in an error state of -EBUSY. This means maple state needs to be reset before the second search in mas_alloc_cylic() to ensure the search happens. This test ensures the issue is not recreated. Link: https://lkml.kernel.org/r/20241216190113.1226145-3-Liam.Howlett@oracle.com Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Reviewed-by: Yang Erkun <yangerkun@huawei.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Chuck Lever <chuck.lever@oracle.com> says: Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Gao Xiang
|
f0ef073e21 |
include/linux/lz4.h: add some missing macros
Currently, LZ4_DISTANCE_MAX and LZ4_DECOMPRESS_INPLACE_MARGIN are defined in the erofs subsystem for LZ4 in-place decompression, which is somewhat unsuitable since they should belong to the LZ4 itself and may change with future LZ4 codebase updates. Move them to include/linux/lz4.h to match the upstream LZ4 library [1]. No logic changes. [1] https://github.com/lz4/lz4/blob/v1.10.0/lib/lz4.h#L670 Link: https://lkml.kernel.org/r/20250114130454.1191150-1-hsiangkao@linux.alibaba.com Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> Cc: Yann Collet <yann.collet.73@gmail.com> Cc: Nick Terrell <terrelln@fb.com> Cc: Chao Yu <chao@kernel.org> Cc: Yue Hu <zbestahu@gmail.com> Cc; Jeffle Xu <jefflexu@linux.alibaba.com> Cc: Sandeep Dhavale <dhavale@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kemeng Shi
|
13fd5cf374 |
Xarray: use xa_mark_t in xas_squash_marks() to keep code consistent
Besides xas_squash_marks(), all functions use xa_mark_t type to iterate all possible marks. Use xa_mark_t in xas_squash_marks() to keep code consistent. Link: https://lkml.kernel.org/r/20241213122523.12764-6-shikemeng@huaweicloud.com Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com> Cc: Mattew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kemeng Shi
|
1988b318b3 |
Xarray: remove repeat check in xas_squash_marks()
Caller of xas_squash_marks() has ensured xas->xa_sibs is non-zero. Just remove repeat check of xas->xa_sibs in xas_squash_marks(). Link: https://lkml.kernel.org/r/20241213122523.12764-5-shikemeng@huaweicloud.com Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com> Cc: Mattew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kemeng Shi
|
97db889b96 |
Xarray: distinguish large entries correctly in xas_split_alloc()
We don't support large entries which expand two more level xa_node in split. For case "xas->xa_shift + 2 * XA_CHUNK_SHIFT == order", we also need two level of xa_node to expand. Distinguish entry as large entry in case "xas->xa_shift + 2 * XA_CHUNK_SHIFT == order". As max order of folio in pagecache (MAX_PAGECACHE_ORDER) is <= (XA_CHUNK_SHIFT * 2 - 1), this change is more likely a cleanup... Link: https://lkml.kernel.org/r/20241213122523.12764-4-shikemeng@huaweicloud.com Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com> Cc: Mattew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kemeng Shi
|
c9ba5249ef |
Xarray: move forward index correctly in xas_pause()
After xas_load(), xas->index could point to mid of found multi-index entry and xas->index's bits under node->shift maybe non-zero. The afterward xas_pause() will move forward xas->index with xa->node->shift with bits under node->shift un-masked and thus skip some index unexpectedly. Consider following case: Assume XA_CHUNK_SHIFT is 4. xa_store_range(xa, 16, 31, ...) xa_store(xa, 32, ...) XA_STATE(xas, xa, 17); xas_for_each(&xas,...) xas_load(&xas) /* xas->index = 17, xas->xa_offset = 1, xas->xa_node->xa_shift = 4 */ xas_pause() /* xas->index = 33, xas->xa_offset = 2, xas->xa_node->xa_shift = 4 */ As we can see, index of 32 is skipped unexpectedly. Fix this by mask bit under node->xa_shift when move forward index in xas_pause(). For now, this will not cause serious problems. Only minor problem like cachestat return less number of page status could happen. Link: https://lkml.kernel.org/r/20241213122523.12764-3-shikemeng@huaweicloud.com Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com> Cc: Mattew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kemeng Shi
|
7e060df04f |
Xarray: do not return sibling entries from xas_find_marked()
Patch series "Fixes and cleanups to xarray", v5.
This series contains some random fixes and cleanups to xarray. Patch 1-2
are fixes and patch 3-6 are cleanups. More details can be found in
respective patches.
This patch (of 5):
Similar to issue fixed in commit
|
||
|
Kuan-Wei Chiu
|
e420460ba4 |
lib/list_sort: clarify comparison function requirements in list_sort()
Add a detailed explanation in the list_sort() kernel doc comment specifying that the comparison function must satisfy antisymmetry and transitivity. These properties are essential for the sorting algorithm to produce correct results. Issues have arisen in the past [1][2][3][4] where comparison functions violated the transitivity property, causing sorting algorithms to fail to correctly order elements. While these requirements may seem straightforward, they are commonly misunderstood or overlooked, leading to bugs. Highlighting these properties in the documentation will help prevent such mistakes in the future. Link: https://lore.kernel.org/lkml/20240701205639.117194-1-visitorckw@gmail.com [1] Link: https://lore.kernel.org/lkml/20241203202228.1274403-1-visitorckw@gmail.com [2] Link: https://lore.kernel.org/lkml/20241209134226.1939163-1-visitorckw@gmail.com [3] Link: https://lore.kernel.org/lkml/20241209145728.1975311-1-visitorckw@gmail.com [4] Link: https://lkml.kernel.org/r/20250106170104.3137845-3-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Cc: <chuang@cs.nycu.edu.tw> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kuan-Wei Chiu
|
4e0a15f8b4 |
lib/sort: clarify comparison function requirements in sort_r()
Patch series "lib: clarify comparison function requirements", v2. Add a detailed explanation in the sort_r/list_sort kernel doc comment specifying that the comparison function must satisfy antisymmetry and transitivity. These properties are essential for the sorting algorithm to produce correct results. Issues have arisen in the past [1][2][3][4] where comparison functions violated the transitivity property, causing sorting algorithms to fail to correctly order elements. While these requirements may seem straightforward, they are commonly misunderstood or overlooked, leading to bugs. Highlighting these properties in the documentation will help prevent such mistakes in the future. Link: https://lore.kernel.org/lkml/20240701205639.117194-1-visitorckw@gmail.com [1] Link: https://lore.kernel.org/lkml/20241203202228.1274403-1-visitorckw@gmail.com [2] Link: https://lore.kernel.org/lkml/20241209134226.1939163-1-visitorckw@gmail.com [3] Link: https://lore.kernel.org/lkml/20241209145728.1975311-1-visitorckw@gmail.com [4] This patch (of 2): Add a detailed explanation in the sort_r() kernel doc comment specifying that the comparison function must satisfy antisymmetry and transitivity. These properties are essential for the sorting algorithm to produce correct results. Issues have arisen in the past [1][2][3][4] where comparison functions violated the transitivity property, causing sorting algorithms to fail to correctly order elements. While these requirements may seem straightforward, they are commonly misunderstood or overlooked, leading to bugs. Highlighting these properties in the documentation will help prevent such mistakes in the future. Link: https://lkml.kernel.org/r/20250106170104.3137845-1-visitorckw@gmail.com Link: https://lore.kernel.org/lkml/20240701205639.117194-1-visitorckw@gmail.com [1] Link: https://lore.kernel.org/lkml/20241203202228.1274403-1-visitorckw@gmail.com [2] Link: https://lore.kernel.org/lkml/20241209134226.1939163-1-visitorckw@gmail.com [3] Link: https://lore.kernel.org/lkml/20241209145728.1975311-1-visitorckw@gmail.com [4] Link: https://lkml.kernel.org/r/20250106170104.3137845-2-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Cc: <chuang@cs.nycu.edu.tw> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Linus Torvalds
|
454cb97726 |
This update includes the following changes:
API:
- Remove physical address skcipher walking.
- Fix boot-up self-test race.
Algorithms:
- Optimisations for x86/aes-gcm.
- Optimisations for x86/aes-xts.
- Remove VMAC.
- Remove keywrap.
Drivers:
- Remove n2.
Others:
- Fixes for padata UAF.
- Fix potential rhashtable deadlock by moving schedule_work outside lock.
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Merge tag 'v6.14-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
"API:
- Remove physical address skcipher walking
- Fix boot-up self-test race
Algorithms:
- Optimisations for x86/aes-gcm
- Optimisations for x86/aes-xts
- Remove VMAC
- Remove keywrap
Drivers:
- Remove n2
Others:
- Fixes for padata UAF
- Fix potential rhashtable deadlock by moving schedule_work outside
lock"
* tag 'v6.14-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (75 commits)
rhashtable: Fix rhashtable_try_insert test
dt-bindings: crypto: qcom,inline-crypto-engine: Document the SM8750 ICE
dt-bindings: crypto: qcom,prng: Document SM8750 RNG
dt-bindings: crypto: qcom-qce: Document the SM8750 crypto engine
crypto: asymmetric_keys - Remove unused key_being_used_for[]
padata: avoid UAF for reorder_work
padata: fix UAF in padata_reorder
padata: add pd get/put refcnt helper
crypto: skcipher - call cond_resched() directly
crypto: skcipher - optimize initializing skcipher_walk fields
crypto: skcipher - clean up initialization of skcipher_walk::flags
crypto: skcipher - fold skcipher_walk_skcipher() into skcipher_walk_virt()
crypto: skcipher - remove redundant check for SKCIPHER_WALK_SLOW
crypto: skcipher - remove redundant clamping to page size
crypto: skcipher - remove unnecessary page alignment of bounce buffer
crypto: skcipher - document skcipher_walk_done() and rename some vars
crypto: omap - switch from scatter_walk to plain offset
crypto: powerpc/p10-aes-gcm - simplify handling of linear associated data
crypto: bcm - Drop unused setting of local 'ptr' variable
crypto: hisilicon/qm - support new function communication
...
|
||
|
Linus Torvalds
|
606489dbfa |
Fix atomic64 operations on some architectures for the tracing ring buffer:
- Have emulating atomic64 use arch_spin_locks instead of raw_spin_locks
The tracing ring buffer events have a small timestamp that holds the
delta between itself and the event before it. But this can be tricky
to update when interrupts come in. It originally just set the deltas
to zero for events that interrupted the adding of another event which
made all the events in the interrupt have the same timestamp as the
event it interrupted. This was not suitable for many tools, so it
was eventually fixed. But that fix required adding an atomic64 cmpxchg
on the timestamp in cases where an event was added while another
event was in the process of being added.
Originally, for 32 bit architectures, the manipulation of the 64 bit
timestamp was done by a structure that held multiple 32bit words to hold
parts of the timestamp and a counter. But as updates to the ring buffer
were done, maintaining this became too complex and was replaced by the
atomic64 generic operations which are now used by both 64bit and 32bit
architectures. Shortly after that, it was reported that riscv32 and
other 32 bit architectures that just used the generic atomic64 were
locking up. This was because the generic atomic64 operations defined in
lib/atomic64.c uses a raw_spin_lock() to emulate an atomic64 operation.
The problem here was that raw_spin_lock() can also be traced by the
function tracer (which is commonly used for debugging raw spin locks).
Since the function tracer uses the tracing ring buffer, which now is being
traced internally, this was triggering a recursion and setting off a
warning that the spin locks were recusing.
There's no reason for the code that emulates atomic64 operations to be
using raw_spin_locks which have a lot of debugging infrastructure attached
to them (depending on the config options). Instead it should be using
the arch_spin_lock() which does not have any infrastructure attached to
them and is used by low level infrastructure like RCU locks, lockdep
and of course tracing. Using arch_spin_lock()s fixes this issue.
- Do not trace in NMI if the architecture uses emulated atomic64 operations
Another issue with using the emulated atomic64 operations that uses
spin locks to emulate the atomic64 operations is that they cannot be
used in NMI context. As an NMI can trigger while holding the atomic64
spin locks it can try to take the same lock and cause a deadlock.
Have the ring buffer fail recording events if in NMI context and the
architecture uses the emulated atomic64 operations.
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Merge tag 'trace-ringbuffer-v6.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull trace fing buffer fix from Steven Rostedt:
"Fix atomic64 operations on some architectures for the tracing ring
buffer:
- Have emulating atomic64 use arch_spin_locks instead of
raw_spin_locks
The tracing ring buffer events have a small timestamp that holds
the delta between itself and the event before it. But this can be
tricky to update when interrupts come in. It originally just set
the deltas to zero for events that interrupted the adding of
another event which made all the events in the interrupt have the
same timestamp as the event it interrupted. This was not suitable
for many tools, so it was eventually fixed. But that fix required
adding an atomic64 cmpxchg on the timestamp in cases where an event
was added while another event was in the process of being added.
Originally, for 32 bit architectures, the manipulation of the 64
bit timestamp was done by a structure that held multiple 32bit
words to hold parts of the timestamp and a counter. But as updates
to the ring buffer were done, maintaining this became too complex
and was replaced by the atomic64 generic operations which are now
used by both 64bit and 32bit architectures. Shortly after that, it
was reported that riscv32 and other 32 bit architectures that just
used the generic atomic64 were locking up. This was because the
generic atomic64 operations defined in lib/atomic64.c uses a
raw_spin_lock() to emulate an atomic64 operation. The problem here
was that raw_spin_lock() can also be traced by the function tracer
(which is commonly used for debugging raw spin locks). Since the
function tracer uses the tracing ring buffer, which now is being
traced internally, this was triggering a recursion and setting off
a warning that the spin locks were recusing.
There's no reason for the code that emulates atomic64 operations to
be using raw_spin_locks which have a lot of debugging
infrastructure attached to them (depending on the config options).
Instead it should be using the arch_spin_lock() which does not have
any infrastructure attached to them and is used by low level
infrastructure like RCU locks, lockdep and of course tracing. Using
arch_spin_lock()s fixes this issue.
- Do not trace in NMI if the architecture uses emulated atomic64
operations
Another issue with using the emulated atomic64 operations that uses
spin locks to emulate the atomic64 operations is that they cannot
be used in NMI context. As an NMI can trigger while holding the
atomic64 spin locks it can try to take the same lock and cause a
deadlock.
Have the ring buffer fail recording events if in NMI context and
the architecture uses the emulated atomic64 operations"
* tag 'trace-ringbuffer-v6.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
atomic64: Use arch_spin_locks instead of raw_spin_locks
ring-buffer: Do not allow events in NMI with generic atomic64 cmpxchg()
|
||
|
Linus Torvalds
|
d0d106a2bd |
bpf-next-6.14
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Merge tag 'bpf-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf updates from Alexei Starovoitov:
"A smaller than usual release cycle.
The main changes are:
- Prepare selftest to run with GCC-BPF backend (Ihor Solodrai)
In addition to LLVM-BPF runs the BPF CI now runs GCC-BPF in compile
only mode. Half of the tests are failing, since support for
btf_decl_tag is still WIP, but this is a great milestone.
- Convert various samples/bpf to selftests/bpf/test_progs format
(Alexis Lothoré and Bastien Curutchet)
- Teach verifier to recognize that array lookup with constant
in-range index will always succeed (Daniel Xu)
- Cleanup migrate disable scope in BPF maps (Hou Tao)
- Fix bpf_timer destroy path in PREEMPT_RT (Hou Tao)
- Always use bpf_mem_alloc in bpf_local_storage in PREEMPT_RT (Martin
KaFai Lau)
- Refactor verifier lock support (Kumar Kartikeya Dwivedi)
This is a prerequisite for upcoming resilient spin lock.
- Remove excessive 'may_goto +0' instructions in the verifier that
LLVM leaves when unrolls the loops (Yonghong Song)
- Remove unhelpful bpf_probe_write_user() warning message (Marco
Elver)
- Add fd_array_cnt attribute for prog_load command (Anton Protopopov)
This is a prerequisite for upcoming support for static_branch"
* tag 'bpf-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (125 commits)
selftests/bpf: Add some tests related to 'may_goto 0' insns
bpf: Remove 'may_goto 0' instruction in opt_remove_nops()
bpf: Allow 'may_goto 0' instruction in verifier
selftests/bpf: Add test case for the freeing of bpf_timer
bpf: Cancel the running bpf_timer through kworker for PREEMPT_RT
bpf: Free element after unlock in __htab_map_lookup_and_delete_elem()
bpf: Bail out early in __htab_map_lookup_and_delete_elem()
bpf: Free special fields after unlock in htab_lru_map_delete_node()
tools: Sync if_xdp.h uapi tooling header
libbpf: Work around kernel inconsistently stripping '.llvm.' suffix
bpf: selftests: verifier: Add nullness elision tests
bpf: verifier: Support eliding map lookup nullness
bpf: verifier: Refactor helper access type tracking
bpf: tcp: Mark bpf_load_hdr_opt() arg2 as read-write
bpf: verifier: Add missing newline on verbose() call
selftests/bpf: Add distilled BTF test about marking BTF_IS_EMBEDDED
libbpf: Fix incorrect traversal end type ID when marking BTF_IS_EMBEDDED
libbpf: Fix return zero when elf_begin failed
selftests/bpf: Fix btf leak on new btf alloc failure in btf_distill test
veristat: Load struct_ops programs only once
...
|
||
|
Linus Torvalds
|
37b33c68b0 |
CRC updates for 6.14
- Reorganize the architecture-optimized CRC32 and CRC-T10DIF code to be directly accessible via the library API, instead of requiring the crypto API. This is much simpler and more efficient. - Convert some users such as ext4 to use the CRC32 library API instead of the crypto API. More conversions like this will come later. - Add a KUnit test that tests and benchmarks multiple CRC variants. Remove older, less-comprehensive tests that are made redundant by this. - Add an entry to MAINTAINERS for the kernel's CRC library code. I'm volunteering to maintain it. I have additional cleanups and optimizations planned for future cycles. These patches have been in linux-next since -rc1. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQSacvsUNc7UX4ntmEPzXCl4vpKOKwUCZ418ZRQcZWJpZ2dlcnNA Z29vZ2xlLmNvbQAKCRDzXCl4vpKOKyJYAP9kBlpm8W9/XY6N8SpjKaXE/vKQYHQl Nobhak06Us8uJwEAkcUTymWP4IwQj5A9jgBAPRw53FQcNVKIc+01C7gRHw0= =mqSH -----END PGP SIGNATURE----- Merge tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux Pull CRC updates from Eric Biggers: - Reorganize the architecture-optimized CRC32 and CRC-T10DIF code to be directly accessible via the library API, instead of requiring the crypto API. This is much simpler and more efficient. - Convert some users such as ext4 to use the CRC32 library API instead of the crypto API. More conversions like this will come later. - Add a KUnit test that tests and benchmarks multiple CRC variants. Remove older, less-comprehensive tests that are made redundant by this. - Add an entry to MAINTAINERS for the kernel's CRC library code. I'm volunteering to maintain it. I have additional cleanups and optimizations planned for future cycles. * tag 'crc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux: (31 commits) MAINTAINERS: add entry for CRC library powerpc/crc: delete obsolete crc-vpmsum_test.c lib/crc32test: delete obsolete crc32test.c lib/crc16_kunit: delete obsolete crc16_kunit.c lib/crc_kunit.c: add KUnit test suite for CRC library functions powerpc/crc-t10dif: expose CRC-T10DIF function through lib arm64/crc-t10dif: expose CRC-T10DIF function through lib arm/crc-t10dif: expose CRC-T10DIF function through lib x86/crc-t10dif: expose CRC-T10DIF function through lib crypto: crct10dif - expose arch-optimized lib function lib/crc-t10dif: add support for arch overrides lib/crc-t10dif: stop wrapping the crypto API scsi: target: iscsi: switch to using the crc32c library f2fs: switch to using the crc32 library jbd2: switch to using the crc32c library ext4: switch to using the crc32c library lib/crc32: make crc32c() go directly to lib bcachefs: Explicitly select CRYPTO from BCACHEFS_FS x86/crc32: expose CRC32 functions through lib x86/crc32: update prototype for crc32_pclmul_le_16() ... |
||
|
Linus Torvalds
|
e8f17cb6f5 |
linux_kselftest-kunit-6.14-rc1
- fixes struct completion warning - introduces autorun option - adds fallback for os.sched_getaffinity - enables hardware acceleration when available -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmeQDEwACgkQCwJExA0N QxzsahAAod2fq5NoQ+SY/x5oc5v0k8tV8pbrdcJBMDx5iKAf/B+EBmqsKHs5VuBi /fUkSQiTndFjXTxZbS1zTRN4XfO5H6AUVmazfHAGhIL4QEsyOocGXIEHwlhHYmLP YwOA2UTS7FilIZA0Z9slKiKnxCZga7pp6Et11rwnydDro2XvPhsnsi9FHchjYmXx lQyaO17RHf5z+LfNAH3j8wsYU910z/Vg5AE1kZ7ckcftFgPXpiK2P2XtDTAKZz4D p7qW6kntUQ9994HbhCa+fw5YIFdSy8fL9QG9uBdWb0x03dQzNkW8mOs8I6DWr4Kw cVp06829K/fpwy3P15mVFjv8cO7W8t74LBGq/EipjQ8eA2RhfkZdwNE/awH9GBDS kjjlNfIh+U4wY6++SAF58k1bZorVgpZfRtpl1anfftEOlex+JPKXaJpoZloMZ/P9 Jh8BtZ+yc16tDkNQlqT24CeSGiC4GvtqUBytXvwGjEdUFzIS+bXGPwHpKrVlHWVV lpntJiUEqIbgZ+XS4UxDHBqXbYKRv7sUlToMJNkMEO5Hz5ok57NjxuPmbfS+LJdk uc6gEH3aAlyI52uJZqotcRmmea52S1HZSUO9E80yl/cS5PHysTlivTXCm85PI7GV a6T43DgnpBqqWPHafnm93DSvlx/wl1LU2JsRYeXp59CkXonlNUk= =caDL -----END PGP SIGNATURE----- Merge tag 'linux_kselftest-kunit-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kunit updates from Shuah Khan: - fix struct completion warning - introduce autorun option - add fallback for os.sched_getaffinity - enable hardware acceleration when available * tag 'linux_kselftest-kunit-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kunit: Introduce autorun option kunit: enable hardware acceleration when available kunit: add fallback for os.sched_getaffinity kunit: platform: Resolve 'struct completion' warning |
||
|
Steven Rostedt
|
6c8ad3ab45 |
atomic64: Use arch_spin_locks instead of raw_spin_locks
raw_spin_locks can be traced by lockdep or tracing itself. Atomic64
operations can be used in the tracing infrastructure. When an architecture
does not have true atomic64 operations it can use the generic version that
disables interrupts and uses spin_locks.
The tracing ring buffer code uses atomic64 operations for the time
keeping. But because some architectures use the default operations, the
locking inside the atomic operations can cause an infinite recursion.
As atomic64 implementation is architecture specific, it should not be
using raw_spin_locks() but instead arch_spin_locks as that is the purpose
of arch_spin_locks. To be used in architecture specific implementations of
generic infrastructure like atomic64 operations.
Note, by switching from raw_spin_locks to arch_spin_locks, the locks taken
to emulate the atomic64 operations will not have lockdep, mmio, or any
kind of checks done on them. They will not even disable preemption,
although the code will disable interrupts preventing the tasks that hold
the locks from being preempted. As the locks held are done so for very
short periods of time, and the logic is only done to emulate atomic64, not
having them be instrumented should not be an issue.
Cc: stable@vger.kernel.org
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andreas Larsson <andreas@gaisler.com>
Link: https://lore.kernel.org/20250122144311.64392baf@gandalf.local.home
Fixes:
|
||
|
Linus Torvalds
|
0ad9617c78 |
Networking changes for 6.14.
Core
----
- More core refactoring to reduce the RTNL lock contention,
including preparatory work for the per-network namespace RTNL lock,
replacing RTNL lock with a per device-one to protect NAPI-related
net device data and moving synchronize_net() calls outside such
lock.
- Extend drop reasons usage, adding net scheduler, AF_UNIX, bridge and
more specific TCP coverage.
- Reduce network namespace tear-down time by removing per-subsystems
synchronize_net() in tipc and sched.
- Add flow label selector support for fib rules, allowing traffic
redirection based on such header field.
Netfilter
---------
- Do not remove netdev basechain when last device is gone, allowing
netdev basechains without devices.
- Revisit the flowtable teardown strategy, dealing better with fin,
reset and re-open events.
- Scale-up IP-vs connection dumping by avoiding linear search on
each restart.
Protocols
---------
- A significant XDP socket refactor, consolidating and optimizing
several helpers into the core
- Better scaling of ICMP rate-limiting, by removing false-sharing in
inet peers handling.
- Introduces netlink notifications for multicast IPv4 and IPv6
address changes.
- Add ipsec support for IP-TFS/AggFrag encapsulation, allowing
aggregation and fragmentation of the inner IP.
- Add sysctl to configure TIME-WAIT reuse delay for TCP sockets,
to avoid local port exhaustion issues when the average connection
lifetime is very short.
- Support updating keys (re-keying) for connections using kernel
TLS (for TLS 1.3 only).
- Support ipv4-mapped ipv6 address clients in smc-r v2.
- Add support for jumbo data packet transmission in RxRPC sockets,
gluing multiple data packets in a single UDP packet.
- Support RxRPC RACK-TLP to manage packet loss and retransmission in
conjunction with the congestion control algorithm.
Driver API
----------
- Introduce a unified and structured interface for reporting PHY
statistics, exposing consistent data across different H/W via
ethtool.
- Make timestamping selectable, allow the user to select the desired
hwtstamp provider (PHY or MAC) administratively.
- Add support for configuring a header-data-split threshold (HDS)
value via ethtool, to deal with partial or buggy H/W implementation.
- Consolidate DSA drivers Energy Efficiency Ethernet support.
- Add EEE management to phylink, making use of the phylib
implementation.
- Add phylib support for in-band capabilities negotiation.
- Simplify how phylib-enabled mac drivers expose the supported
interfaces.
Tests and tooling
-----------------
- Make the YNL tool package-friendly to make it easier to deploy it
separately from the kernel.
- Increase TCP selftest coverage importing several packetdrill
test-cases.
- Regenerate the ethtool uapi header from the YNL spec,
to ease maintenance and future development.
- Add YNL support for decoding the link types used in net
self-tests, allowing a single build to run both net and
drivers/net.
Drivers
-------
- Ethernet high-speed NICs:
- nVidia/Mellanox (mlx5):
- add cross E-Switch QoS support
- add SW Steering support for ConnectX-8
- implement support for HW-Managed Flow Steering, improving the
rule deletion/insertion rate
- support for multi-host LAG
- Intel (ixgbe, ice, igb):
- ice: add support for devlink health events
- ixgbe: add initial support for E610 chipset variant
- igb: add support for AF_XDP zero-copy
- Meta:
- add support for basic RSS config
- allow changing the number of channels
- add hardware monitoring support
- Broadcom (bnxt):
- implement TCP data split and HDS threshold ethtool support,
enabling Device Memory TCP.
- Marvell Octeon:
- implement egress ipsec offload support for the cn10k family
- Hisilicon (HIBMC):
- implement unicast MAC filtering
- Ethernet NICs embedded and virtual:
- Convert UDP tunnel drivers to NETDEV_PCPU_STAT_DSTATS, avoiding
contented atomic operations for drop counters
- Freescale:
- quicc: phylink conversion
- enetc: support Tx and Rx checksum offload and improve TSO
performances
- MediaTek:
- airoha: introduce support for ETS and HTB Qdisc offload
- Microchip:
- lan78XX USB: preparation work for phylink conversion
- Synopsys (stmmac):
- support DWMAC IP on NXP Automotive SoCs S32G2xx/S32G3xx/S32R45
- refactor EEE support to leverage the new driver API
- optimize DMA and cache access to increase raw RX performances
by 40%
- TI:
- icssg-prueth: add multicast filtering support for VLAN
interface
- netkit:
- add ability to configure head/tailroom
- VXLAN:
- accepts packets with user-defined reserved bit
- Ethernet switches:
- Microchip:
- lan969x: add RGMII support
- lan969x: improve TX and RX performance using the FDMA engine
- nVidia/Mellanox:
- move Tx header handling to PCI driver, to ease XDP support
- Ethernet PHYs:
- Texas Instruments DP83822:
- add support for GPIO2 clock output
- Realtek:
- 8169: add support for RTL8125D rev.b
- rtl822x: add hwmon support for the temperature sensor
- Microchip:
- add support for RDS PTP hardware
- consolidate periodic output signal generation
- CAN:
- several DT-bindings to DT schema conversions
- tcan4x5x:
- add HW standby support
- support nWKRQ voltage selection
- kvaser:
- allowing Bus Error Reporting runtime configuration
- WiFi:
- the on-going Multi-Link Operation (MLO) effort continues, affecting
both the stack and in drivers
- mac80211/cfg80211:
- Emergency Preparedness Communication Services (EPCS) station mode
support
- support for adding and removing station links for MLO
- add support for WiFi 7/EHT mesh over 320 MHz channels
- report Tx power info for each link
- RealTek (rtw88):
- enable USB Rx aggregation and USB 3 to improve performance
- LED support
- RealTek (rtw89):
- refactor power save to support Multi-Link Operations
- add support for RTL8922AE-VS variant
- MediaTek (mt76):
- single wiphy multiband support (preparation for MLO)
- p2p device support
- add TP-Link TXE50UH USB adapter support
- Qualcomm (ath10k):
- support for the QCA6698AQ IP core
- Qualcomm (ath12k):
- enable MLO for QCN9274
- Bluetooth:
- Allow sysfs to trigger hdev reset, to allow recovering devices
not responsive from user-space
- MediaTek: add support for MT7922, MT7925, MT7921e devices
- Realtek: add support for RTL8851BE devices
- Qualcomm: add support for WCN785x devices
- ISO: allow BIG re-sync
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"This is slightly smaller than usual, with the most interesting work
being still around RTNL scope reduction.
Core:
- More core refactoring to reduce the RTNL lock contention, including
preparatory work for the per-network namespace RTNL lock, replacing
RTNL lock with a per device-one to protect NAPI-related net device
data and moving synchronize_net() calls outside such lock.
- Extend drop reasons usage, adding net scheduler, AF_UNIX, bridge
and more specific TCP coverage.
- Reduce network namespace tear-down time by removing per-subsystems
synchronize_net() in tipc and sched.
- Add flow label selector support for fib rules, allowing traffic
redirection based on such header field.
Netfilter:
- Do not remove netdev basechain when last device is gone, allowing
netdev basechains without devices.
- Revisit the flowtable teardown strategy, dealing better with fin,
reset and re-open events.
- Scale-up IP-vs connection dumping by avoiding linear search on each
restart.
Protocols:
- A significant XDP socket refactor, consolidating and optimizing
several helpers into the core
- Better scaling of ICMP rate-limiting, by removing false-sharing in
inet peers handling.
- Introduces netlink notifications for multicast IPv4 and IPv6
address changes.
- Add ipsec support for IP-TFS/AggFrag encapsulation, allowing
aggregation and fragmentation of the inner IP.
- Add sysctl to configure TIME-WAIT reuse delay for TCP sockets, to
avoid local port exhaustion issues when the average connection
lifetime is very short.
- Support updating keys (re-keying) for connections using kernel TLS
(for TLS 1.3 only).
- Support ipv4-mapped ipv6 address clients in smc-r v2.
- Add support for jumbo data packet transmission in RxRPC sockets,
gluing multiple data packets in a single UDP packet.
- Support RxRPC RACK-TLP to manage packet loss and retransmission in
conjunction with the congestion control algorithm.
Driver API:
- Introduce a unified and structured interface for reporting PHY
statistics, exposing consistent data across different H/W via
ethtool.
- Make timestamping selectable, allow the user to select the desired
hwtstamp provider (PHY or MAC) administratively.
- Add support for configuring a header-data-split threshold (HDS)
value via ethtool, to deal with partial or buggy H/W
implementation.
- Consolidate DSA drivers Energy Efficiency Ethernet support.
- Add EEE management to phylink, making use of the phylib
implementation.
- Add phylib support for in-band capabilities negotiation.
- Simplify how phylib-enabled mac drivers expose the supported
interfaces.
Tests and tooling:
- Make the YNL tool package-friendly to make it easier to deploy it
separately from the kernel.
- Increase TCP selftest coverage importing several packetdrill
test-cases.
- Regenerate the ethtool uapi header from the YNL spec, to ease
maintenance and future development.
- Add YNL support for decoding the link types used in net self-tests,
allowing a single build to run both net and drivers/net.
Drivers:
- Ethernet high-speed NICs:
- nVidia/Mellanox (mlx5):
- add cross E-Switch QoS support
- add SW Steering support for ConnectX-8
- implement support for HW-Managed Flow Steering, improving the
rule deletion/insertion rate
- support for multi-host LAG
- Intel (ixgbe, ice, igb):
- ice: add support for devlink health events
- ixgbe: add initial support for E610 chipset variant
- igb: add support for AF_XDP zero-copy
- Meta:
- add support for basic RSS config
- allow changing the number of channels
- add hardware monitoring support
- Broadcom (bnxt):
- implement TCP data split and HDS threshold ethtool support,
enabling Device Memory TCP.
- Marvell Octeon:
- implement egress ipsec offload support for the cn10k family
- Hisilicon (HIBMC):
- implement unicast MAC filtering
- Ethernet NICs embedded and virtual:
- Convert UDP tunnel drivers to NETDEV_PCPU_STAT_DSTATS, avoiding
contented atomic operations for drop counters
- Freescale:
- quicc: phylink conversion
- enetc: support Tx and Rx checksum offload and improve TSO
performances
- MediaTek:
- airoha: introduce support for ETS and HTB Qdisc offload
- Microchip:
- lan78XX USB: preparation work for phylink conversion
- Synopsys (stmmac):
- support DWMAC IP on NXP Automotive SoCs S32G2xx/S32G3xx/S32R45
- refactor EEE support to leverage the new driver API
- optimize DMA and cache access to increase raw RX performances
by 40%
- TI:
- icssg-prueth: add multicast filtering support for VLAN
interface
- netkit:
- add ability to configure head/tailroom
- VXLAN:
- accepts packets with user-defined reserved bit
- Ethernet switches:
- Microchip:
- lan969x: add RGMII support
- lan969x: improve TX and RX performance using the FDMA engine
- nVidia/Mellanox:
- move Tx header handling to PCI driver, to ease XDP support
- Ethernet PHYs:
- Texas Instruments DP83822:
- add support for GPIO2 clock output
- Realtek:
- 8169: add support for RTL8125D rev.b
- rtl822x: add hwmon support for the temperature sensor
- Microchip:
- add support for RDS PTP hardware
- consolidate periodic output signal generation
- CAN:
- several DT-bindings to DT schema conversions
- tcan4x5x:
- add HW standby support
- support nWKRQ voltage selection
- kvaser:
- allowing Bus Error Reporting runtime configuration
- WiFi:
- the on-going Multi-Link Operation (MLO) effort continues,
affecting both the stack and in drivers
- mac80211/cfg80211:
- Emergency Preparedness Communication Services (EPCS) station
mode support
- support for adding and removing station links for MLO
- add support for WiFi 7/EHT mesh over 320 MHz channels
- report Tx power info for each link
- RealTek (rtw88):
- enable USB Rx aggregation and USB 3 to improve performance
- LED support
- RealTek (rtw89):
- refactor power save to support Multi-Link Operations
- add support for RTL8922AE-VS variant
- MediaTek (mt76):
- single wiphy multiband support (preparation for MLO)
- p2p device support
- add TP-Link TXE50UH USB adapter support
- Qualcomm (ath10k):
- support for the QCA6698AQ IP core
- Qualcomm (ath12k):
- enable MLO for QCN9274
- Bluetooth:
- Allow sysfs to trigger hdev reset, to allow recovering devices
not responsive from user-space
- MediaTek: add support for MT7922, MT7925, MT7921e devices
- Realtek: add support for RTL8851BE devices
- Qualcomm: add support for WCN785x devices
- ISO: allow BIG re-sync"
* tag 'net-next-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1386 commits)
net/rose: prevent integer overflows in rose_setsockopt()
net: phylink: fix regression when binding a PHY
net: ethernet: ti: am65-cpsw: streamline TX queue creation and cleanup
net: ethernet: ti: am65-cpsw: streamline RX queue creation and cleanup
net: ethernet: ti: am65-cpsw: ensure proper channel cleanup in error path
ipv6: Convert inet6_rtm_deladdr() to per-netns RTNL.
ipv6: Convert inet6_rtm_newaddr() to per-netns RTNL.
ipv6: Move lifetime validation to inet6_rtm_newaddr().
ipv6: Set cfg.ifa_flags before device lookup in inet6_rtm_newaddr().
ipv6: Pass dev to inet6_addr_add().
ipv6: Convert inet6_ioctl() to per-netns RTNL.
ipv6: Hold rtnl_net_lock() in addrconf_init() and addrconf_cleanup().
ipv6: Hold rtnl_net_lock() in addrconf_dad_work().
ipv6: Hold rtnl_net_lock() in addrconf_verify_work().
ipv6: Convert net.ipv6.conf.${DEV}.XXX sysctl to per-netns RTNL.
ipv6: Add __in6_dev_get_rtnl_net().
net: stmmac: Drop redundant skb_mark_for_recycle() for SKB frags
net: mii: Fix the Speed display when the network cable is not connected
sysctl net: Remove macro checks for CONFIG_SYSCTL
eth: bnxt: update header sizing defaults
...
|
||
|
Linus Torvalds
|
d0f93ac2c3 |
Documentation changes this time around include:
- Quite a bit of Chinese and Spanish translation work. - Clarifying that Git commit IDs >12chars are OK - A new nvme-multipath document - A reorganization of the admin-guide top-level page to make it readable - Clarification of the role of Acked-by and maintainer discretion on their acceptance. - Some reorganization of debugging-oriented docs. ...and typo fixes, documentation updates, etc. as usual. -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmeOp8EPHGNvcmJldEBs d24ubmV0AAoJEBdDWhNsDH5YipUH/iffvlVYuqoVdPUFWdmsiNjwOCRE2MIfp8qO tPTRRHJAny+NlFT0IWlGUbLNoNXtvpN47YlkaeAjdrsjASerfpwzje7t4Z1B+jWT 0YwGBCvDIGasfRCx7D14+w5aqkEEynfsy+QurwcuDxcHMQGwt7ZCuTNOVO6BULEr L++BMwqapUr5IemP4ItQqDVVF9sp6bWEhaOnTTJCLU6oG23uUSSA/59sJmwDJUk7 6J3VGO1An4Jte9WX7qkVrSBNO5cOOhaFiFXIeNxfOioOPctBwxKiHDJnzVud8ipz R+tnUI/8hEvyJ7GZFezyZxmMnFs0P2DEYAkaN+hBs/nUjx0dKUg= =YxaS -----END PGP SIGNATURE----- Merge tag 'docs-6.14' of git://git.lwn.net/linux Pull Documentation updates from Jonathan Corbet: - Quite a bit of Chinese and Spanish translation work - Clarifying that Git commit IDs >12chars are OK - A new nvme-multipath document - A reorganization of the admin-guide top-level page to make it readable - Clarification of the role of Acked-by and maintainer discretion on their acceptance - Some reorganization of debugging-oriented docs ... and typo fixes, documentation updates, etc as usual * tag 'docs-6.14' of git://git.lwn.net/linux: (50 commits) Documentation: Fix x86_64 UEFI outdated references to elilo Documentation/sysctl: Add timer_migration to kernel.rst docs/mm: Physical memory: Remove zone_t docs: submitting-patches: clarify that signers may use their discretion on tags docs: submitting-patches: clarify difference between Acked-by and Reviewed-by docs: submitting-patches: clarify Acked-by and introduce "# Suffix" Documentation: bug-hunting.rst: remove odd contact information docs/zh_CN: Add sak index Chinese translation doc: module: DEFAULT_SYMBOL_NAMESPACE must be defined before #includes doc: module: Fix documented type of namespace Documentation/kernel-parameters: Fix a reference to vga-softcursor.rst docs/zh_CN: Add landlock index Chinese translation Documentation: Fix typo localmodonfig -> localmodconfig overlayfs.rst: Fix and improve grammar docs/zh_CN: Add siphash index Chinese translation docs/zh_CN: Add security IMA-templates Chinese translation docs/zh_CN: Add security digsig Chinese translation Align git commit ID abbreviation guidelines and checks docs: process: submitting-patches: split canonical patch format section docs/zh_CN: Add security lsm Chinese translation ... |
||
|
Linus Torvalds
|
1d6d399223 |
Kthreads affinity follow either of 4 existing different patterns:
1) Per-CPU kthreads must stay affine to a single CPU and never execute
relevant code on any other CPU. This is currently handled by smpboot
code which takes care of CPU-hotplug operations. Affinity here is
a correctness constraint.
2) Some kthreads _have_ to be affine to a specific set of CPUs and can't
run anywhere else. The affinity is set through kthread_bind_mask()
and the subsystem takes care by itself to handle CPU-hotplug
operations. Affinity here is assumed to be a correctness constraint.
3) Per-node kthreads _prefer_ to be affine to a specific NUMA node. This
is not a correctness constraint but merely a preference in terms of
memory locality. kswapd and kcompactd both fall into this category.
The affinity is set manually like for any other task and CPU-hotplug
is supposed to be handled by the relevant subsystem so that the task
is properly reaffined whenever a given CPU from the node comes up.
Also care should be taken so that the node affinity doesn't cross
isolated (nohz_full) cpumask boundaries.
4) Similar to the previous point except kthreads have a _preferred_
affinity different than a node. Both RCU boost kthreads and RCU
exp kworkers fall into this category as they refer to "RCU nodes"
from a distinctly distributed tree.
Currently the preferred affinity patterns (3 and 4) have at least 4
identified users, with more or less success when it comes to handle
CPU-hotplug operations and CPU isolation. Each of which do it in its own
ad-hoc way.
This is an infrastructure proposal to handle this with the following API
changes:
_ kthread_create_on_node() automatically affines the created kthread to
its target node unless it has been set as per-cpu or bound with
kthread_bind[_mask]() before the first wake-up.
- kthread_affine_preferred() is a new function that can be called right
after kthread_create_on_node() to specify a preferred affinity
different than the specified node.
When the preferred affinity can't be applied because the possible
targets are offline or isolated (nohz_full), the kthread is affine
to the housekeeping CPUs (which means to all online CPUs most of the
time or only the non-nohz_full CPUs when nohz_full= is set).
kswapd, kcompactd, RCU boost kthreads and RCU exp kworkers have been
converted, along with a few old drivers.
Summary of the changes:
* Consolidate a bunch of ad-hoc implementations of kthread_run_on_cpu()
* Introduce task_cpu_fallback_mask() that defines the default last
resort affinity of a task to become nohz_full aware
* Add some correctness check to ensure kthread_bind() is always called
before the first kthread wake up.
* Default affine kthread to its preferred node.
* Convert kswapd / kcompactd and remove their halfway working ad-hoc
affinity implementation
* Implement kthreads preferred affinity
* Unify kthread worker and kthread API's style
* Convert RCU kthreads to the new API and remove the ad-hoc affinity
implementation.
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Merge tag 'kthread-for-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks
Pull kthread updates from Frederic Weisbecker:
"Kthreads affinity follow either of 4 existing different patterns:
1) Per-CPU kthreads must stay affine to a single CPU and never
execute relevant code on any other CPU. This is currently handled
by smpboot code which takes care of CPU-hotplug operations.
Affinity here is a correctness constraint.
2) Some kthreads _have_ to be affine to a specific set of CPUs and
can't run anywhere else. The affinity is set through
kthread_bind_mask() and the subsystem takes care by itself to
handle CPU-hotplug operations. Affinity here is assumed to be a
correctness constraint.
3) Per-node kthreads _prefer_ to be affine to a specific NUMA node.
This is not a correctness constraint but merely a preference in
terms of memory locality. kswapd and kcompactd both fall into this
category. The affinity is set manually like for any other task and
CPU-hotplug is supposed to be handled by the relevant subsystem so
that the task is properly reaffined whenever a given CPU from the
node comes up. Also care should be taken so that the node affinity
doesn't cross isolated (nohz_full) cpumask boundaries.
4) Similar to the previous point except kthreads have a _preferred_
affinity different than a node. Both RCU boost kthreads and RCU
exp kworkers fall into this category as they refer to "RCU nodes"
from a distinctly distributed tree.
Currently the preferred affinity patterns (3 and 4) have at least 4
identified users, with more or less success when it comes to handle
CPU-hotplug operations and CPU isolation. Each of which do it in its
own ad-hoc way.
This is an infrastructure proposal to handle this with the following
API changes:
- kthread_create_on_node() automatically affines the created kthread
to its target node unless it has been set as per-cpu or bound with
kthread_bind[_mask]() before the first wake-up.
- kthread_affine_preferred() is a new function that can be called
right after kthread_create_on_node() to specify a preferred
affinity different than the specified node.
When the preferred affinity can't be applied because the possible
targets are offline or isolated (nohz_full), the kthread is affine to
the housekeeping CPUs (which means to all online CPUs most of the time
or only the non-nohz_full CPUs when nohz_full= is set).
kswapd, kcompactd, RCU boost kthreads and RCU exp kworkers have been
converted, along with a few old drivers.
Summary of the changes:
- Consolidate a bunch of ad-hoc implementations of
kthread_run_on_cpu()
- Introduce task_cpu_fallback_mask() that defines the default last
resort affinity of a task to become nohz_full aware
- Add some correctness check to ensure kthread_bind() is always
called before the first kthread wake up.
- Default affine kthread to its preferred node.
- Convert kswapd / kcompactd and remove their halfway working ad-hoc
affinity implementation
- Implement kthreads preferred affinity
- Unify kthread worker and kthread API's style
- Convert RCU kthreads to the new API and remove the ad-hoc affinity
implementation"
* tag 'kthread-for-6.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks:
kthread: modify kernel-doc function name to match code
rcu: Use kthread preferred affinity for RCU exp kworkers
treewide: Introduce kthread_run_worker[_on_cpu]()
kthread: Unify kthread_create_on_cpu() and kthread_create_worker_on_cpu() automatic format
rcu: Use kthread preferred affinity for RCU boost
kthread: Implement preferred affinity
mm: Create/affine kswapd to its preferred node
mm: Create/affine kcompactd to its preferred node
kthread: Default affine kthread to its preferred NUMA node
kthread: Make sure kthread hasn't started while binding it
sched,arm64: Handle CPU isolation on last resort fallback rq selection
arm64: Exclude nohz_full CPUs from 32bits el0 support
lib: test_objpool: Use kthread_run_on_cpu()
kallsyms: Use kthread_run_on_cpu()
soc/qman: test: Use kthread_run_on_cpu()
arm/bL_switcher: Use kthread_run_on_cpu()
|
||
|
Linus Torvalds
|
96c84703f1 |
drm next for 6.14-rc1
core: - device memory cgroup controller added - Remove driver date from drm_driver - Add drm_printer based hex dumper - drm memory stats docs update - scheduler documentation improvements new driver: - amdxdna - Ryzen AI NPU support connector: - add a mutex to protect ELD - make connector setup two-step panels: - Introduce backlight quirks infrastructure - New panels: KDB KD116N2130B12, Tianma TM070JDHG34-00, - Multi-Inno Technology MI1010Z1T-1CP11 bridge: - ti-sn65dsi83: Add ti,lvds-vod-swing optional properties - Provide default implementation of atomic_check for HDMI bridges - it605: HDCP improvements, MCCS Support xe: - make OA buffer size configurable - GuC capture fixes - add ufence and g2h flushes - restore system memory GGTT mappings - ioctl fixes - SRIOV PF scheduling priority - allow fault injection - lots of improvements/refactors - Enable GuC's WA_DUAL_QUEUE for newer platforms - IRQ related fixes and improvements i915: - More accurate engine busyness metrics with GuC submission - Ensure partial BO segment offset never exceeds allowed max - Flush GuC CT receive tasklet during reset preparation - Some DG2 refactor to fix DG2 bugs when operating with certain CPUs - Fix DG1 power gate sequence - Enabling uncompressed 128b/132b UHBR SST - Handle hdmi connector init failures, and no HDMI/DP cases - More robust engine resets on Haswell and older i915/xe display: - HDCP fixes for Xe3Lpd - New GSC FW ARL-H/ARL-U - support 3 VDSC engines 12 slices - MBUS joining sanitisation - reconcile i915/xe display power mgmt - Xe3Lpd fixes - UHBR rates for Thunderbolt amdgpu: - DRM panic support - track BO memory stats at runtime - Fix max surface handling in DC - Cleaner shader support for gfx10.3 dGPUs - fix drm buddy trim handling - SDMA engine reset updates - Fix doorbell ttm cleanup - RAS updates - ISP updates - SDMA queue reset support - Rework DPM powergating interfaces - Documentation updates and cleanups - DCN 3.5 updates - Use a pm notifier to more gracefully handle VRAM eviction on suspend or hibernate - Add debugfs interfaces for forcing scheduling to specific engine instances - GG 9.5 updates - IH 4.4 updates - Make missing optional firmware less noisy - PSP 13.x updates - SMU 13.x updates - VCN 5.x updates - JPEG 5.x updates - GC 12.x updates - DC FAMS updates amdkfd: - GG 9.5 updates - Logging improvements - Shader debugger fixes - Trap handler cleanup - Cleanup includes - Eviction fence wq fix msm: - MDSS: - properly described UBWC registers - added SM6150 (aka QCS615) support - DPU: - added SM6150 (aka QCS615) support - enabled wide planes if virtual planes are enabled (by using two SSPPs for a single plane) - added CWB hardware blocks support - DSI: - added SM6150 (aka QCS615) support - GPU: - Print GMU core fw version - GMU bandwidth voting for a740 and a750 - Expose uche trap base via uapi - UAPI error reporting rcar-du: - Add r8a779h0 Support ivpu: - Fix qemu crash when using passthrough nouveau: - expose GSP-RM logging buffers via debugfs panfrost: - Add MT8188 Mali-G57 MC3 support rockchip: - Gamma LUT support hisilicon: - new HIBMC support virtio-gpu: - convert to helpers - add prime support for scanout buffers v3d: - Add DRM_IOCTL_V3D_PERFMON_SET_GLOBAL vc4: - Add support for BCM2712 vkms: - line-per-line compositing algorithm to improve performance zynqmp: - Add DP audio support mediatek: - dp: Add sdp path reset - dp: Support flexible length of DP calibration data etnaviv: - add fdinfo memory support - add explicit reset handling -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmeJ5qYACgkQDHTzWXnE hr4o+w/9EbijDfyf8GCj4Qaxov8nZ3KEMW8LLmrYO3epfLsniX+nv01oNdbRXBjl QcsKixAvkyfLl61RuPnwbYiSJfxgwZ5K8rke7cshwlMB7zl7xZ+GZRoAmJlnokS4 uhmclCriW5nfKRNAGUPcj/ReGZeyHwqvGZn3jyuShkIFpE4rDope4DQsTzm/zs/i +cKyRAFm86EIdTACr9DVtb1L5uNZOnHDkufRH5EZr/7CWFco1krLxb/r4cvFaiIO GiDaLvXKXKwzQ6NeIWWCEU2zTBz0BluI8ggxp1+WlDiYgLDWtCBpBNPAoNJO/iQS J+E8bsk2b/aCLSJQgxcK0y80CXpoJyALaqStdHUqxuWv3/o0g8lFUJlfJVCNPIsg o4mBkdbgkzkHCPxUbie7uQIx+2DIsEiwWC/YGBeRx49qEYsLWyFHf6JR8j9aHCQq eGanaubzR+W2AC81yktd3rcxpmX5kq8n6ax3ZtS9wnio8iyB5jBDM8QeFSAE/vXV B5TT1nneh+HXJ6bTwZBFXkiq2JRxUdbZIS5oQLh0zixVthBMISSsYhJ222nH1bC4 DWIS2ggqSgqkb0WsE29CJyhJ1fPmS3v7lBXqPvjmN5vMto4gGOJAEgT6CiDpGFIz zXzNfrirr1r95iSST4PnYVOOkfK3t9gvbWMXgkr0wygtxyoxHzk= =5FIc -----END PGP SIGNATURE----- Merge tag 'drm-next-2025-01-17' of https://gitlab.freedesktop.org/drm/kernel Pull drm updates from Dave Airlie: "There are two external interactions of note, the msm tree pull in some opp tree, hopefully the opp tree arrives from the same git tree however it normally does. There is also a new cgroup controller for device memory, that is used by drm, so is merging through my tree. This will hopefully help open up gpu cgroup usage a bit more and move us forward. There is a new accelerator driver for the AMD XDNA Ryzen AI NPUs. Then the usual xe/amdgpu/i915/msm leaders and lots of changes and refactors across the board: core: - device memory cgroup controller added - Remove driver date from drm_driver - Add drm_printer based hex dumper - drm memory stats docs update - scheduler documentation improvements new driver: - amdxdna - Ryzen AI NPU support connector: - add a mutex to protect ELD - make connector setup two-step panels: - Introduce backlight quirks infrastructure - New panels: KDB KD116N2130B12, Tianma TM070JDHG34-00, - Multi-Inno Technology MI1010Z1T-1CP11 bridge: - ti-sn65dsi83: Add ti,lvds-vod-swing optional properties - Provide default implementation of atomic_check for HDMI bridges - it605: HDCP improvements, MCCS Support xe: - make OA buffer size configurable - GuC capture fixes - add ufence and g2h flushes - restore system memory GGTT mappings - ioctl fixes - SRIOV PF scheduling priority - allow fault injection - lots of improvements/refactors - Enable GuC's WA_DUAL_QUEUE for newer platforms - IRQ related fixes and improvements i915: - More accurate engine busyness metrics with GuC submission - Ensure partial BO segment offset never exceeds allowed max - Flush GuC CT receive tasklet during reset preparation - Some DG2 refactor to fix DG2 bugs when operating with certain CPUs - Fix DG1 power gate sequence - Enabling uncompressed 128b/132b UHBR SST - Handle hdmi connector init failures, and no HDMI/DP cases - More robust engine resets on Haswell and older i915/xe display: - HDCP fixes for Xe3Lpd - New GSC FW ARL-H/ARL-U - support 3 VDSC engines 12 slices - MBUS joining sanitisation - reconcile i915/xe display power mgmt - Xe3Lpd fixes - UHBR rates for Thunderbolt amdgpu: - DRM panic support - track BO memory stats at runtime - Fix max surface handling in DC - Cleaner shader support for gfx10.3 dGPUs - fix drm buddy trim handling - SDMA engine reset updates - Fix doorbell ttm cleanup - RAS updates - ISP updates - SDMA queue reset support - Rework DPM powergating interfaces - Documentation updates and cleanups - DCN 3.5 updates - Use a pm notifier to more gracefully handle VRAM eviction on suspend or hibernate - Add debugfs interfaces for forcing scheduling to specific engine instances - GG 9.5 updates - IH 4.4 updates - Make missing optional firmware less noisy - PSP 13.x updates - SMU 13.x updates - VCN 5.x updates - JPEG 5.x updates - GC 12.x updates - DC FAMS updates amdkfd: - GG 9.5 updates - Logging improvements - Shader debugger fixes - Trap handler cleanup - Cleanup includes - Eviction fence wq fix msm: - MDSS: - properly described UBWC registers - added SM6150 (aka QCS615) support - DPU: - added SM6150 (aka QCS615) support - enabled wide planes if virtual planes are enabled (by using two SSPPs for a single plane) - added CWB hardware blocks support - DSI: - added SM6150 (aka QCS615) support - GPU: - Print GMU core fw version - GMU bandwidth voting for a740 and a750 - Expose uche trap base via uapi - UAPI error reporting rcar-du: - Add r8a779h0 Support ivpu: - Fix qemu crash when using passthrough nouveau: - expose GSP-RM logging buffers via debugfs panfrost: - Add MT8188 Mali-G57 MC3 support rockchip: - Gamma LUT support hisilicon: - new HIBMC support virtio-gpu: - convert to helpers - add prime support for scanout buffers v3d: - Add DRM_IOCTL_V3D_PERFMON_SET_GLOBAL vc4: - Add support for BCM2712 vkms: - line-per-line compositing algorithm to improve performance zynqmp: - Add DP audio support mediatek: - dp: Add sdp path reset - dp: Support flexible length of DP calibration data etnaviv: - add fdinfo memory support - add explicit reset handling" * tag 'drm-next-2025-01-17' of https://gitlab.freedesktop.org/drm/kernel: (1070 commits) drm/bridge: fix documentation for the hdmi_audio_prepare() callback doc/cgroup: Fix title underline length drm/doc: Include new drm-compute documentation cgroup/dmem: Fix parameters documentation cgroup/dmem: Select PAGE_COUNTER kernel/cgroup: Remove the unused variable climit drm/display: hdmi: Do not read EDID on disconnected connectors drm/tests: hdmi: Add connector disablement test drm/connector: hdmi: Do atomic check when necessary drm/amd/display: 3.2.316 drm/amd/display: avoid reset DTBCLK at clock init drm/amd/display: improve dpia pre-train drm/amd/display: Apply DML21 Patches drm/amd/display: Use HW lock mgr for PSR1 drm/amd/display: Revised for Replay Pseudo vblank control drm/amd/display: Add a new flag for replay low hz drm/amd/display: Remove unused read_ono_state function from Hwss module drm/amd/display: Do not elevate mem_type change to full update drm/amd/display: Do not wait for PSR disable on vbl enable drm/amd/display: Remove unnecessary eDP power down ... |
||
|
Linus Torvalds
|
2e04247f7c |
ftrace updates for v6.14:
- Have fprobes built on top of function graph infrastructure The fprobe logic is an optimized kprobe that uses ftrace to attach to functions when a probe is needed at the start or end of the function. The fprobe and kretprobe logic implements a similar method as the function graph tracer to trace the end of the function. That is to hijack the return address and jump to a trampoline to do the trace when the function exits. To do this, a shadow stack needs to be created to store the original return address. Fprobes and function graph do this slightly differently. Fprobes (and kretprobes) has slots per callsite that are reserved to save the return address. This is fine when just a few points are traced. But users of fprobes, such as BPF programs, are starting to add many more locations, and this method does not scale. The function graph tracer was created to trace all functions in the kernel. In order to do this, when function graph tracing is started, every task gets its own shadow stack to hold the return address that is going to be traced. The function graph tracer has been updated to allow multiple users to use its infrastructure. Now have fprobes be one of those users. This will also allow for the fprobe and kretprobe methods to trace the return address to become obsolete. With new technologies like CFI that need to know about these methods of hijacking the return address, going toward a solution that has only one method of doing this will make the kernel less complex. - Cleanup with guard() and free() helpers There were several places in the code that had a lot of "goto out" in the error paths to either unlock a lock or free some memory that was allocated. But this is error prone. Convert the code over to use the guard() and free() helpers that let the compiler unlock locks or free memory when the function exits. - Remove disabling of interrupts in the function graph tracer When function graph tracer was first introduced, it could race with interrupts and NMIs. To prevent that race, it would disable interrupts and not trace NMIs. But the code has changed to allow NMIs and also interrupts. This change was done a long time ago, but the disabling of interrupts was never removed. Remove the disabling of interrupts in the function graph tracer is it is not needed. This greatly improves its performance. - Allow the :mod: command to enable tracing module functions on the kernel command line. The function tracer already has a way to enable functions to be traced in modules by writing ":mod:<module>" into set_ftrace_filter. That will enable either all the functions for the module if it is loaded, or if it is not, it will cache that command, and when the module is loaded that matches <module>, its functions will be enabled. This also allows init functions to be traced. But currently events do not have that feature. Because enabling function tracing can be done very early at boot up (before scheduling is enabled), the commands that can be done when function tracing is started is limited. Having the ":mod:" command to trace module functions as they are loaded is very useful. Update the kernel command line function filtering to allow it. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZ42E2RQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qqXSAPwOMxuhye8tb1GYG62QD9+w7e6nOmlC 2GCPj4detnEM2QD/ciivkhespVKhHpZHRewAuSnJgHPSM45NQ3EVESzjWQ4= =snbx -----END PGP SIGNATURE----- Merge tag 'ftrace-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull ftrace updates from Steven Rostedt: - Have fprobes built on top of function graph infrastructure The fprobe logic is an optimized kprobe that uses ftrace to attach to functions when a probe is needed at the start or end of the function. The fprobe and kretprobe logic implements a similar method as the function graph tracer to trace the end of the function. That is to hijack the return address and jump to a trampoline to do the trace when the function exits. To do this, a shadow stack needs to be created to store the original return address. Fprobes and function graph do this slightly differently. Fprobes (and kretprobes) has slots per callsite that are reserved to save the return address. This is fine when just a few points are traced. But users of fprobes, such as BPF programs, are starting to add many more locations, and this method does not scale. The function graph tracer was created to trace all functions in the kernel. In order to do this, when function graph tracing is started, every task gets its own shadow stack to hold the return address that is going to be traced. The function graph tracer has been updated to allow multiple users to use its infrastructure. Now have fprobes be one of those users. This will also allow for the fprobe and kretprobe methods to trace the return address to become obsolete. With new technologies like CFI that need to know about these methods of hijacking the return address, going toward a solution that has only one method of doing this will make the kernel less complex. - Cleanup with guard() and free() helpers There were several places in the code that had a lot of "goto out" in the error paths to either unlock a lock or free some memory that was allocated. But this is error prone. Convert the code over to use the guard() and free() helpers that let the compiler unlock locks or free memory when the function exits. - Remove disabling of interrupts in the function graph tracer When function graph tracer was first introduced, it could race with interrupts and NMIs. To prevent that race, it would disable interrupts and not trace NMIs. But the code has changed to allow NMIs and also interrupts. This change was done a long time ago, but the disabling of interrupts was never removed. Remove the disabling of interrupts in the function graph tracer is it is not needed. This greatly improves its performance. - Allow the :mod: command to enable tracing module functions on the kernel command line. The function tracer already has a way to enable functions to be traced in modules by writing ":mod:<module>" into set_ftrace_filter. That will enable either all the functions for the module if it is loaded, or if it is not, it will cache that command, and when the module is loaded that matches <module>, its functions will be enabled. This also allows init functions to be traced. But currently events do not have that feature. Because enabling function tracing can be done very early at boot up (before scheduling is enabled), the commands that can be done when function tracing is started is limited. Having the ":mod:" command to trace module functions as they are loaded is very useful. Update the kernel command line function filtering to allow it. * tag 'ftrace-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (26 commits) ftrace: Implement :mod: cache filtering on kernel command line tracing: Adopt __free() and guard() for trace_fprobe.c bpf: Use ftrace_get_symaddr() for kprobe_multi probes ftrace: Add ftrace_get_symaddr to convert fentry_ip to symaddr Documentation: probes: Update fprobe on function-graph tracer selftests/ftrace: Add a test case for repeating register/unregister fprobe selftests: ftrace: Remove obsolate maxactive syntax check tracing/fprobe: Remove nr_maxactive from fprobe fprobe: Add fprobe_header encoding feature fprobe: Rewrite fprobe on function-graph tracer s390/tracing: Enable HAVE_FTRACE_GRAPH_FUNC ftrace: Add CONFIG_HAVE_FTRACE_GRAPH_FUNC bpf: Enable kprobe_multi feature if CONFIG_FPROBE is enabled tracing/fprobe: Enable fprobe events with CONFIG_DYNAMIC_FTRACE_WITH_ARGS tracing: Add ftrace_fill_perf_regs() for perf event tracing: Add ftrace_partial_regs() for converting ftrace_regs to pt_regs fprobe: Use ftrace_regs in fprobe exit handler fprobe: Use ftrace_regs in fprobe entry handler fgraph: Pass ftrace_regs to retfunc fgraph: Replace fgraph_ret_regs with ftrace_regs ... |
||
|
Linus Torvalds
|
8838a1a2d2 |
Locking changes for v6.14:
- Lockdep:
- Improve and fix lockdep bitsize limits, clarify the Kconfig
documentation (Carlos Llamas)
- Fix lockdep build warning on Clang related to
chain_hlock_class_idx() inlining (Andy Shevchenko)
- Relax the requirements of PROVE_RAW_LOCK_NESTING arch support
by not tying it to ARCH_SUPPORTS_RT unnecessarily (Waiman Long)
- Rust integration:
- Support lock pointers managed by the C side (Lyude Paul)
- Support guard types (Lyude Paul)
- Update MAINTAINERS file filters to include the
Rust locking code (Boqun Feng)
- Wake-queues:
- Add raw_spin_*wake() helpers to simplify locking code (John Stultz)
- SMP cross-calls:
- Fix potential data update race by evaluating the local cond_func()
before IPI side-effects (Mathieu Desnoyers)
- Guard primitives:
- Ease [c]tags based searches by including the cleanup/guard type
primitives (Peter Zijlstra)
- ww_mutexes:
- Simplify the ww_mutex self-test code via swap() (Thorsten Blum)
- Static calls:
- Update the static calls MAINTAINERS file-pattern (Jiri Slaby)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2025-01-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Lockdep:
- Improve and fix lockdep bitsize limits, clarify the Kconfig
documentation (Carlos Llamas)
- Fix lockdep build warning on Clang related to
chain_hlock_class_idx() inlining (Andy Shevchenko)
- Relax the requirements of PROVE_RAW_LOCK_NESTING arch support by
not tying it to ARCH_SUPPORTS_RT unnecessarily (Waiman Long)
Rust integration:
- Support lock pointers managed by the C side (Lyude Paul)
- Support guard types (Lyude Paul)
- Update MAINTAINERS file filters to include the Rust locking code
(Boqun Feng)
Wake-queues:
- Add raw_spin_*wake() helpers to simplify locking code (John Stultz)
SMP cross-calls:
- Fix potential data update race by evaluating the local cond_func()
before IPI side-effects (Mathieu Desnoyers)
Guard primitives:
- Ease [c]tags based searches by including the cleanup/guard type
primitives (Peter Zijlstra)
ww_mutexes:
- Simplify the ww_mutex self-test code via swap() (Thorsten Blum)
Static calls:
- Update the static calls MAINTAINERS file-pattern (Jiri Slaby)"
* tag 'locking-core-2025-01-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Add static_call_inline.c to STATIC BRANCH/CALL
cleanup, tags: Create tags for the cleanup primitives
sched/wake_q: Add helper to call wake_up_q after unlock with preemption disabled
rust: sync: Add lock::Backend::assert_is_held()
rust: sync: Add SpinLockGuard type alias
rust: sync: Add MutexGuard type alias
rust: sync: Make Guard::new() public
rust: sync: Add Lock::from_raw() for Lock<(), B>
locking: MAINTAINERS: Start watching Rust locking primitives
lockdep: Move lockdep_assert_locked() under #ifdef CONFIG_PROVE_LOCKING
lockdep: Mark chain_hlock_class_idx() with __maybe_unused
lockdep: Document MAX_LOCKDEP_CHAIN_HLOCKS calculation
lockdep: Clarify size for LOCKDEP_*_BITS configs
lockdep: Fix upper limit for LOCKDEP_*_BITS configs
locking/ww_mutex/test: Use swap() macro
smp/scf: Evaluate local cond_func() before IPI side-effects
locking/lockdep: Enforce PROVE_RAW_LOCK_NESTING only if ARCH_SUPPORTS_RT
|
||
|
Linus Torvalds
|
4b84a4c8d4 |
vfs-6.14-rc1.misc
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Merge tag 'vfs-6.14-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"Features:
- Support caching symlink lengths in inodes
The size is stored in a new union utilizing the same space as
i_devices, thus avoiding growing the struct or taking up any more
space
When utilized it dodges strlen() in vfs_readlink(), giving about
1.5% speed up when issuing readlink on /initrd.img on ext4
- Add RWF_DONTCACHE iocb and FOP_DONTCACHE file_operations flag
If a file system supports uncached buffered IO, it may set
FOP_DONTCACHE and enable support for RWF_DONTCACHE.
If RWF_DONTCACHE is attempted without the file system supporting
it, it'll get errored with -EOPNOTSUPP
- Enable VBOXGUEST and VBOXSF_FS on ARM64
Now that VirtualBox is able to run as a host on arm64 (e.g. the
Apple M3 processors) we can enable VBOXSF_FS (and in turn
VBOXGUEST) for this architecture.
Tested with various runs of bonnie++ and dbench on an Apple MacBook
Pro with the latest Virtualbox 7.1.4 r165100 installed
Cleanups:
- Delay sysctl_nr_open check in expand_files()
- Use kernel-doc includes in fiemap docbook
- Use page->private instead of page->index in watch_queue
- Use a consume fence in mnt_idmap() as it's heavily used in
link_path_walk()
- Replace magic number 7 with ARRAY_SIZE() in fc_log
- Sort out a stale comment about races between fd alloc and dup2()
- Fix return type of do_mount() from long to int
- Various cosmetic cleanups for the lockref code
Fixes:
- Annotate spinning as unlikely() in __read_seqcount_begin
The annotation already used to be there, but got lost in commit
|
||
|
Linus Torvalds
|
ca56a74a31 |
vfs-6.14-rc1.netfs
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Merge tag 'vfs-6.14-rc1.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs netfs updates from Christian Brauner:
"This contains read performance improvements and support for monolithic
single-blob objects that have to be read/written as such (e.g. AFS
directory contents). The implementation of the two parts is interwoven
as each makes the other possible.
- Read performance improvements
The read performance improvements are intended to speed up some
loss of performance detected in cifs and to a lesser extend in afs.
The problem is that we queue too many work items during the
collection of read results: each individual subrequest is collected
by its own work item, and then they have to interact with each
other when a series of subrequests don't exactly align with the
pattern of folios that are being read by the overall request.
Whilst the processing of the pages covered by individual
subrequests as they complete potentially allows folios to be woken
in parallel and with minimum delay, it can shuffle wakeups for
sequential reads out of order - and that is the most common I/O
pattern.
The final assessment and cleanup of an operation is then held up
until the last I/O completes - and for a synchronous sequential
operation, this means the bouncing around of work items just adds
latency.
Two changes have been made to make this work:
(1) All collection is now done in a single "work item" that works
progressively through the subrequests as they complete (and
also dispatches retries as necessary).
(2) For readahead and AIO, this work item be done on a workqueue
and can run in parallel with the ultimate consumer of the data;
for synchronous direct or unbuffered reads, the collection is
run in the application thread and not offloaded.
Functions such as smb2_readv_callback() then just tell netfslib
that the subrequest has terminated; netfslib does a minimal bit of
processing on the spot - stat counting and tracing mostly - and
then queues/wakes up the worker. This simplifies the logic as the
collector just walks sequentially through the subrequests as they
complete and walks through the folios, if buffered, unlocking them
as it goes. It also keeps to a minimum the amount of latency
injected into the filesystem's low-level I/O handling
The way netfs supports filesystems using the deprecated
PG_private_2 flag is changed: folios are flagged and added to a
write request as they complete and that takes care of scheduling
the writes to the cache. The originating read request can then just
unlock the pages whatever happens.
- Single-blob object support
Single-blob objects are files for which the content of the file
must be read from or written to the server in a single operation
because reading them in parts may yield inconsistent results. AFS
directories are an example of this as there exists the possibility
that the contents are generated on the fly and would differ between
reads or might change due to third party interference.
Such objects will be written to and retrieved from the cache if one
is present, though we allow/may need to propose multiple
subrequests to do so. The important part is that read from/write to
the *server* is monolithic.
Single blob reading is, for the moment, fully synchronous and does
result collection in the application thread and, also for the
moment, the API is supplied the buffer in the form of a folio_queue
chain rather than using the pagecache.
- Related afs changes
This series makes a number of changes to the kafs filesystem,
primarily in the area of directory handling:
- AFS's FetchData RPC reply processing is made partially
asynchronous which allows the netfs_io_request's outstanding
operation counter to be removed as part of reducing the
collection to a single work item.
- Directory and symlink reading are plumbed through netfslib using
the single-blob object API and are now cacheable with fscache.
This also allows the afs_read struct to be eliminated and
netfs_io_subrequest to be used directly instead.
- Directory and symlink content are now stored in a folio_queue
buffer rather than in the pagecache. This means we don't require
the RCU read lock and xarray iteration to access it, and folios
won't randomly disappear under us because the VM wants them
back.
- The vnode operation lock is changed from a mutex struct to a
private lock implementation. The problem is that the lock now
needs to be dropped in a separate thread and mutexes don't
permit that.
- When a new directory or symlink is created, we now initialise it
locally and mark it valid rather than downloading it (we know
what it's likely to look like).
- We now use the in-directory hashtable to reduce the number of
entries we need to scan when doing a lookup. The edit routines
have to maintain the hash chains.
- Cancellation (e.g. by signal) of an async call after the
rxrpc_call has been set up is now offloaded to the worker thread
as there will be a notification from rxrpc upon completion. This
avoids a double cleanup.
- A "rolling buffer" implementation is created to abstract out the
two separate folio_queue chaining implementations I had (one for
read and one for write).
- Functions are provided to create/extend a buffer in a folio_queue
chain and tear it down again.
This is used to handle AFS directories, but could also be used to
create bounce buffers for content crypto and transport crypto.
- The was_async argument is dropped from netfs_read_subreq_terminated()
Instead we wake the read collection work item by either queuing it
or waking up the app thread.
- We don't need to use BH-excluding locks when communicating between
the issuing thread and the collection thread as neither of them now
run in BH context.
- Also included are a number of new tracepoints; a split of the
netfslib write collection code to put retrying into its own file
(it gets more complicated with content encryption).
- There are also some minor fixes AFS included, including fixing the
AFS directory format struct layout, reducing some directory
over-invalidation and making afs_mkdir() translate EEXIST to
ENOTEMPY (which is not available on all systems the servers
support).
- Finally, there's a patch to try and detect entry into the folio
unlock function with no folio_queue structs in the buffer (which
isn't allowed in the cases that can get there).
This is a debugging patch, but should be minimal overhead"
* tag 'vfs-6.14-rc1.netfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (31 commits)
netfs: Report on NULL folioq in netfs_writeback_unlock_folios()
afs: Add a tracepoint for afs_read_receive()
afs: Locally initialise the contents of a new symlink on creation
afs: Use the contained hashtable to search a directory
afs: Make afs_mkdir() locally initialise a new directory's content
netfs: Change the read result collector to only use one work item
afs: Make {Y,}FS.FetchData an asynchronous operation
afs: Fix cleanup of immediately failed async calls
afs: Eliminate afs_read
afs: Use netfslib for symlinks, allowing them to be cached
afs: Use netfslib for directories
afs: Make afs_init_request() get a key if not given a file
netfs: Add support for caching single monolithic objects such as AFS dirs
netfs: Add functions to build/clean a buffer in a folio_queue
afs: Add more tracepoints to do with tracking validity
cachefiles: Add auxiliary data trace
cachefiles: Add some subrequest tracepoints
netfs: Remove some extraneous directory invalidations
afs: Fix directory format encoding struct
afs: Fix EEXIST error returned from afs_rmdir() to be ENOTEMPTY
...
|
||
|
Linus Torvalds
|
5293b5f97e |
Merge branch 'vsnprintf'
This merges the vsnprintf internal cleanups I did, which were triggered by a combination of performance issues (see for example commit f9ed1f7c2e26: "genirq/proc: Use seq_put_decimal_ull_width() for decimal values") and discussion about tracing abusing the vsnprintf code in odd ways. The intent was to improve code generation, but also to possibly eventually expose the cleaned-up printf format decoding state machine. It certainly didn't get to the point where we'd want to expose the format decoding to external users, but it's an improvement over what we used to have. Several of the complex case statements have been simplified, or removed entirely to be replaced by simple table lookups. * branch 'vsnprintf': vsnprintf: fix the number base for non-numeric formats vsnprintf: fix up kerneldoc for argument name changes vsprintf: don't make the 'binary' version pack small integer arguments vsnprintf: collapse the number format state into one single state vsnprintf: mark the indirect width and precision cases unlikely vsnprintf: inline skip_atoi() again vsprintf: deal with format specifiers with a lookup table vsprintf: deal with format flags with a simple lookup table vsprintf: associate the format state with the format pointer vsprintf: fix calling convention for format_decode() vsprintf: avoid nested switch statement on same variable vsprintf: simplify number handling |
||
|
Herbert Xu
|
9d4f8e54ce |
rhashtable: Fix rhashtable_try_insert test
The test on whether rhashtable_insert_one did an insertion relies
on the value returned by rhashtable_lookup_one. Unfortunately that
value is overwritten after rhashtable_insert_one returns. Fix this
by moving the test before data gets overwritten.
Simplify the test as only data == NULL matters.
Finally move atomic_inc back within the lock as otherwise it may
be reordered with the atomic_dec on the removal side, potentially
leading to an underflow.
Reported-by: Michael Kelley <mhklinux@outlook.com>
Fixes:
|
||
|
Konrad Knitter
|
d4679b79ff |
pldmfw: enable selected component update
This patch enables to update a selected component from PLDM image containing multiple components. Example usage: struct pldmfw; data.mode = PLDMFW_UPDATE_MODE_SINGLE_COMPONENT; data.compontent_identifier = DRIVER_FW_MGMT_COMPONENT_ID; Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Marcin Szycik <marcin.szycik@linux.intel.com> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com> Signed-off-by: Konrad Knitter <konrad.knitter@intel.com> Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel) Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> |
||
|
Christoph Hellwig
|
6d2868d5b6
|
lockref: use bool for false/true returns
Replace int used as bool with the actual bool type for return values that can only be true or false. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20250115094702.504610-4-hch@lst.de Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Christoph Hellwig
|
d60f2280a1
|
lockref: improve the lockref_get_not_zero description
lockref_put_return returns exactly -1 and not "an error" when the lockref is dead or locked. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20250115094702.504610-3-hch@lst.de Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Christoph Hellwig
|
4b193fa75e
|
lockref: remove lockref_put_not_zero
lockref_put_not_zero is not used anywhere, and unless I'm missing something didn't end up being used used at all. Remove it. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20250115094702.504610-2-hch@lst.de Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Suren Baghdasaryan
|
05c82ee363 |
alloc_tag: skip pgalloc_tag_swap if profiling is disabled
When memory allocation profiling is disabled, there is no need to swap
allocation tags during migration. Skip it to avoid unnecessary overhead.
Once I added these checks, the overhead of the mode when memory profiling
is enabled but turned off went down by about 50%.
Link: https://lkml.kernel.org/r/20241226211639.1357704-2-surenb@google.com
Fixes:
|
||
|
Stanislav Kinsburskii
|
31691914c3 |
kunit: Introduce autorun option
The new option controls tests run on boot or module load. With the new debugfs "run" dentry allowing to run tests on demand, an ability to disable automatic tests run becomes a useful option in case of intrusive tests. The option is set to true by default to preserve the existent behavior. It can be overridden by either the corresponding module option or by the corresponding config build option. Link: https://lore.kernel.org/r/173015245931.4747.16419517391658830640.stgit@skinsburskii-cloud-desktop.internal.cloudapp.net Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com> Reviewed-by: Rae Moar <rmoar@google.com> Acked-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
||
|
Dr. David Alan Gilbert
|
ee9c69388e |
kobject: Remove unused functions
kobj_ns_initial() and kobj_ns_netlink() were adde din 2010 by
commit
|
||
|
Wei Yang
|
7318f95ba4 |
maple_tree: only root node could be deficient
Each level's rightmost node should have (max == ULONG_MAX). This means current validation skips the right most node on each level. Only the root node may be below the minimum data threshold. Link: https://lkml.kernel.org/r/20241113031616.10530-4-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> |
||
|
Wei Yang
|
c38279d407 |
maple_tree: add a test check deficient node
Add a test to assert when resulting a deficient node on splitting. We can achieve this by build a tree with two nodes. With the left node with consecutive data from 0 and leave some room for the final insert to locate in left node. And the right node a full node to force the split happens on the left node. Link: https://lkml.kernel.org/r/20241113031616.10530-3-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
|
4f6a6bed0b |
maple_tree: simplify split calculation
Patch series "simplify split calculation", v3.
This patch (of 3):
The current calculation for splitting nodes tries to enforce a minimum
span on the leaf nodes. This code is complex and never worked correctly
to begin with, due to the min value being passed as 0 for all leaves.
The calculation should just split the data as equally as possible
between the new nodes. Note that b_end will be one more than the data,
so the left side is still favoured in the calculation.
The current code may also lead to a deficient node by not leaving enough
data for the right side of the split. This issue is also addressed with
the split calculation change.
[Liam.Howlett@Oracle.com: rephrase the change log]
Link: https://lkml.kernel.org/r/20241113031616.10530-1-richard.weiyang@gmail.com
Link: https://lkml.kernel.org/r/20241113031616.10530-2-richard.weiyang@gmail.com
Fixes:
|
||
|
Wei Yang
|
f2760364ad |
maple_tree: we don't set offset to MAPLE_NODE_SLOTS on error
When mas_anode_descend() not find gap, it sets -EBUSY instead of setting offset to MAPLE_NODE_SLOTS. Link: https://lkml.kernel.org/r/20241116014805.11547-4-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Wei Yang
|
f5bd418727 |
maple_tree: not possible to be a root node after loop
Empty tree and single entry tree is handled else whether, so the maple tree here must be a tree with nodes. If the height is 1 and we found the gap, it will jump to *done* since it is also a leaf. If the height is more than one, and there may be an available range, we will descend the tree, which is not root anymore. If there is no available range, we will set error and return. This means the check for root node here is not necessary. Link: https://lkml.kernel.org/r/20241116014805.11547-3-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Wei Yang
|
5f8db8d428 |
maple_tree: index has been checked to be smaller than pivot
Patch series "mas_anode_descend() related cleanup". Some cleanup related to mas_anode_descend(). This patch (of 3): At the beginning of loop, it has checked the range is in lower bounds. Link: https://lkml.kernel.org/r/20241116014805.11547-1-richard.weiyang@gmail.com Link: https://lkml.kernel.org/r/20241116014805.11547-2-richard.weiyang@gmail.com Signed-off-by: Wei Yang <richard.weiyang@gmail.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@Oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Wei Yang
|
002ebb925e |
maple_tree: use mas_next_slot() directly
The loop condition makes sure (mas.last < max), so we can directly use mas_next_slot() here. Since no other use of mas_next_entry(), it is removed. Link: https://lkml.kernel.org/r/20241125024156.26093-1-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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|
Linus Torvalds
|
ecdc475e07 |
vsnprintf: fix the number base for non-numeric formats
Commit |
||
|
Greg Kroah-Hartman
|
be887fcad3 |
Merge 6.13-rc4 into char-misc-next
We need the IIO fixes in here as well, and it resolves a merge conflict in: drivers/iio/adc/ti-ads1119.c Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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|
Ariel Otilibili
|
41c761dede |
lib/inflate.c: remove dead code
This is a follow up from a discussion in Xen:
The if-statement tests that `res` is non-zero; meaning the case zero is
never reached.
Link: https://lore.kernel.org/all/7587b503-b2ca-4476-8dc9-e9683d4ca5f0@suse.com/
Link: https://lkml.kernel.org/r/20241219092615.644642-2-ariel.otilibili-anieli@eurecom.fr
Fixes:
|
||
|
Matthew Wilcox (Oracle)
|
123f5d5ff2 |
iov_iter: remove setting of page->index
Nothing actually checks page->index, so just remove it. Link: https://lkml.kernel.org/r/20241216161253.37687-1-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Luis Felipe Hernandez
|
0fafc9e156 |
lib/math: add int_sqrt test suite
Adds test suite for integer based square root function. The test suite is designed to verify the correctness of the int_sqrt() math library function. Link: https://lkml.kernel.org/r/20241213042701.1037467-1-luis.hernandez093@gmail.com Signed-off-by: Luis Felipe Hernandez <luis.hernandez093@gmail.com> Reviewed-by: Kuan-Wei Chiu <visitorckw@gmail.com> Cc: David Gow <davidgow@google.com> Cc: Ricardo B. Marliere <rbm@suse.com> Cc: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Pratyush Mittal
|
f3a6101b00 |
lib/rhashtable: fix the typo for preemptible
Fix the spelling of the mis-spelled word Link: https://lkml.kernel.org/r/20241123102929.11660-1-pratyushmittal@gmail.com Signed-off-by: Pratyush Mittal <pratyushmittal@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Akinobu Mita
|
e9bc360b10 |
fault-inject: use prandom where cryptographically secure randomness is not needed
Currently get_random*() is used to determine the probability of fault injection, but cryptographically secure random numbers are not required. There is no big problem in using prandom instead of get_random*() to determine the probability of fault injection, and it also avoids acquiring a spinlock, which is unsafe in some contexts. [akpm@linux-foundation.org: tweak and reflow comment] Link: https://lore.kernel.org/lkml/20241129120939.GG35539@noisy.programming.kicks-ass.net Link: https://lkml.kernel.org/r/20241208142415.205960-1-akinobu.mita@gmail.com Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Suggested-by: Peter Zijlstra <peterz@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Tamir Duberstein
|
c7bb5cf9fc |
xarray: port tests to kunit
Minimally rewrite the XArray unit tests to use kunit. This integrates nicely with existing kunit tools which produce nicer human-readable output compared to the existing machinery. Running the xarray tests before this change requires an obscure invocation ``` tools/testing/kunit/kunit.py run --arch arm64 --make_options LLVM=1 \ --kconfig_add CONFIG_TEST_XARRAY=y --raw_output=all nothing ``` which on failure produces ``` BUG at check_reserve:513 ... XArray: 6782340 of 6782364 tests passed ``` and exits 0. Running the xarray tests after this change requires a simpler invocation ``` tools/testing/kunit/kunit.py run --arch arm64 --make_options LLVM=1 \ xarray ``` which on failure produces (colors omitted) ``` [09:50:53] ====================== check_reserve ====================== [09:50:53] [FAILED] param-0 [09:50:53] # check_reserve: EXPECTATION FAILED at lib/test_xarray.c:536 [09:50:53] xa_erase(xa, 12345678) != NULL ... [09:50:53] # module: test_xarray [09:50:53] # xarray: pass:26 fail:3 skip:0 total:29 [09:50:53] # Totals: pass:28 fail:3 skip:0 total:31 [09:50:53] ===================== [FAILED] xarray ====================== ``` and exits 1. Use of richer kunit assertions is intentionally omitted to reduce the scope of the change. [akpm@linux-foundation.org: fix cocci warning] Link: https://lore.kernel.org/oe-kbuild-all/202412081700.YXB3vBbg-lkp@intel.com/ Link: https://lkml.kernel.org/r/20241205-xarray-kunit-port-v1-1-ee44bc7aa201@gmail.com Signed-off-by: Tamir Duberstein <tamird@gmail.com> Cc: Bill Wendling <morbo@google.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Justin Stitt <justinstitt@google.com> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Naveen N Rao <naveen@kernel.org> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Tamir Duberstein
|
79ada2ae66 |
xarray: extract helper from __xa_{insert,cmpxchg}
Reduce code duplication by extracting a static inline function. This function is identical to __xa_cmpxchg with the exception that it does not coerce zero entries to null on the return path. [tamird@gmail.com: fix __xa_erase()] Link: https://lkml.kernel.org/r/CAJ-ks9kN_qddZ3Ne5d=cADu5POC1rHd4rQcbVSD_spnZOrLLZg@mail.gmail.com Link: https://lkml.kernel.org/r/20241112-xarray-insert-cmpxchg-v1-2-dc2bdd8c4136@gmail.com Signed-off-by: Tamir Duberstein <tamird@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Tamir Duberstein
|
74e2712b14 |
xarray: extract xa_zero_to_null
Patch series "xarray: extract __xa_cmpxchg_raw". This series reduces duplication between __xa_cmpxchg and __xa_insert by extracting a new function that does not coerce zero entries to null on the return path. The new function may be used by the upcoming Rust xarray abstraction in its reservation API where it is useful to tell the difference between zero entries and null slots. This patch (of 2): Reduce code duplication by extracting a static inline function that returns its argument if it is non-zero and NULL otherwise. This changes xas_result to check for errors before checking for zero but this cannot change the behavior of existing callers: - __xa_erase: passes the result of xas_store(_, NULL) which cannot fail. - __xa_store: passes the result of xas_store(_, entry) which may fail. xas_store calls xas_create when entry is not NULL which returns NULL on error, which is immediately checked. This should not change observable behavior. - __xa_cmpxchg: passes the result of xas_load(_) which might be zero. This would previously return NULL regardless of the outcome of xas_store but xas_store cannot fail if xas_load returns zero because there is no need to allocate memory. - xa_store_range: same as __xa_erase. Link: https://lkml.kernel.org/r/20241112-xarray-insert-cmpxchg-v1-0-dc2bdd8c4136@gmail.com Link: https://lkml.kernel.org/r/20241112-xarray-insert-cmpxchg-v1-1-dc2bdd8c4136@gmail.com Signed-off-by: Tamir Duberstein <tamird@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Kuan-Wei Chiu
|
93aa1b5c17 |
lib/test_min_heap: use inline min heap variants to reduce attack vector
To address concerns about increasing the attack vector, remove the select MIN_HEAP dependency from TEST_MIN_HEAP in Kconfig.debug. Additionally, all min heap test function calls in lib/test_min_heap.c are replaced with their inline variants. By exclusively using inline variants, we eliminate the need to enable CONFIG_MIN_HEAP for testing purposes. Link: https://lore.kernel.org/lkml/CAMuHMdVO5DPuD9HYWBFqKDHphx7+0BEhreUxtVC40A=8p6VAhQ@mail.gmail.com Link: https://lkml.kernel.org/r/20241129181222.646855-3-visitorckw@gmail.com Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com> Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ching-Chun (Jim) Huang <jserv@ccns.ncku.edu.tw> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Dave Airlie
|
f6001870ed |
Linux 6.13-rc6
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmd7BBQeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGfEEH/3oyTWmD5DPX2lLp SujyKrEs6bfMQTKKYHzuy8OvzDXkBpZiKXIsCgjF5sXwQVgB7KPfJwgjt5xLo3F3 NTehLGwII7bM8mSq3wHDMeNkyBle4VYA9XOR8tXj21j7aRt9S4U/vtXiYeD9BWhC Y1p+1FXKfZf7TjNpu8lIl+zLjSFDjYwM8h72dIuHnrYeuFL88fnWwoNP/MFkk5Kk ce3ol3EtFe/M4GbVOm7KfzEkbsEE6ES60O0suxwYDn+71EA6ExVHFBKqpQvfj71/ ynxWYIwMoiCZWtJ+ali1g/ms0OxG+ivH8+xasBYTcDICZMe/XGX5Yx+Wm5DH5/Ev pGMyvbI= =yrc7 -----END PGP SIGNATURE----- Merge tag 'v6.13-rc6' into drm-next This backmerges Linux 6.13-rc6 this is need for the newer pulls. Signed-off-by: Dave Airlie <airlied@redhat.com> |
||
|
Jakub Kicinski
|
14ea4cd1b1 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.13-rc7). Conflicts: |
||
|
Vimal Agrawal
|
37df904332 |
misc:minor basic kunit tests
basic kunit tests for misc minor Signed-off-by: Vimal Agrawal <vimal.agrawal@sophos.com> Reviewed-by: Dirk VanDerMerwe <dirk.vandermerwe@sophos.com> Link: https://lore.kernel.org/r/20241021133926.23774-1-vimal.agrawal@sophos.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Christophe Leroy
|
2532608530 |
bpf/tests: Add 32 bits only long conditional jump tests
Commit
|
||
|
Linus Torvalds
|
fa47906ff3 |
vsnprintf: fix up kerneldoc for argument name changes
Stephen Rothwell reports that I missed fixing up the documentation when the argument names changed in commit |
||
|
Jakub Kicinski
|
385f186aba |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.13-rc6). No conflicts. Adjacent changes: include/linux/if_vlan.h |
||
|
Frederic Weisbecker
|
192faebeb9 |
lib: test_objpool: Use kthread_run_on_cpu()
Use the proper API instead of open coding it. Reviewed-by: Matt Wu <wuqiang.matt@bytedance.com> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> |
||
|
Yang Erkun
|
1fd8bc7cd8 |
maple_tree: reload mas before the second call for mas_empty_area
Change the LONG_MAX in simple_offset_add to 1024, and do latter:
[root@fedora ~]# mkdir /tmp/dir
[root@fedora ~]# for i in {1..1024}; do touch /tmp/dir/$i; done
touch: cannot touch '/tmp/dir/1024': Device or resource busy
[root@fedora ~]# rm /tmp/dir/123
[root@fedora ~]# touch /tmp/dir/1024
[root@fedora ~]# rm /tmp/dir/100
[root@fedora ~]# touch /tmp/dir/1025
touch: cannot touch '/tmp/dir/1025': Device or resource busy
After we delete file 100, actually this is a empty entry, but the latter
create failed unexpected.
mas_alloc_cyclic has two chance to find empty entry. First find the entry
with range range_lo and range_hi, if no empty entry exist, and range_lo >
min, retry find with range min and range_hi. However, the first call
mas_empty_area may mark mas as EBUSY, and the second call for
mas_empty_area will return false directly. Fix this by reload mas before
second call for mas_empty_area.
[Liam.Howlett@Oracle.com: fix mas_alloc_cyclic() second search]
Link: https://lore.kernel.org/all/20241216060600.287B4C4CED0@smtp.kernel.org/
Link: https://lkml.kernel.org/r/20241216190113.1226145-2-Liam.Howlett@oracle.com
Link: https://lkml.kernel.org/r/20241214093005.72284-1-yangerkun@huaweicloud.com
Fixes:
|
||
|
Herbert Xu
|
de662429f3 |
crypto: lib/aesgcm - Reduce stack usage in libaesgcm_init
The stack frame in libaesgcm_init triggers a size warning on x86-64. Reduce it by making buf static. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
||
|
Masami Hiramatsu (Google)
|
4346ba1604 |
fprobe: Rewrite fprobe on function-graph tracer
Rewrite fprobe implementation on function-graph tracer.
Major API changes are:
- 'nr_maxactive' field is deprecated.
- This depends on CONFIG_DYNAMIC_FTRACE_WITH_ARGS or
!CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS, and
CONFIG_HAVE_FUNCTION_GRAPH_FREGS. So currently works only
on x86_64.
- Currently the entry size is limited in 15 * sizeof(long).
- If there is too many fprobe exit handler set on the same
function, it will fail to probe.
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Acked-by: Heiko Carstens <hca@linux.ibm.com> # s390
Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Florent Revest <revest@chromium.org>
Cc: Martin KaFai Lau <martin.lau@linux.dev>
Cc: bpf <bpf@vger.kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Alan Maguire <alan.maguire@oracle.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Naveen N Rao <naveen@kernel.org>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: x86@kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/173519003970.391279.14406792285453830996.stgit@devnote2
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
|
||
|
Masami Hiramatsu (Google)
|
762abbc0d0 |
fprobe: Use ftrace_regs in fprobe exit handler
Change the fprobe exit handler to use ftrace_regs structure instead of pt_regs. This also introduce HAVE_FTRACE_REGS_HAVING_PT_REGS which means the ftrace_regs is including the pt_regs so that ftrace_regs can provide pt_regs without memory allocation. Fprobe introduces a new dependency with that. Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Acked-by: Heiko Carstens <hca@linux.ibm.com> # s390 Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com> Cc: Florent Revest <revest@chromium.org> Cc: bpf <bpf@vger.kernel.org> Cc: Alan Maguire <alan.maguire@oracle.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: x86@kernel.org Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Song Liu <song@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: KP Singh <kpsingh@kernel.org> Cc: Matt Bobrowski <mattbobrowski@google.com> 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: Yonghong Song <yonghong.song@linux.dev> Cc: John Fastabend <john.fastabend@gmail.com> Cc: Stanislav Fomichev <sdf@fomichev.me> Cc: Hao Luo <haoluo@google.com> Cc: Andrew Morton <akpm@linux-foundation.org> Link: https://lore.kernel.org/173518995092.391279.6765116450352977627.stgit@devnote2 Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Masami Hiramatsu (Google)
|
46bc082388 |
fprobe: Use ftrace_regs in fprobe entry handler
This allows fprobes to be available with CONFIG_DYNAMIC_FTRACE_WITH_ARGS instead of CONFIG_DYNAMIC_FTRACE_WITH_REGS, then we can enable fprobe on arm64. Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com> Cc: Martin KaFai Lau <martin.lau@linux.dev> Cc: bpf <bpf@vger.kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Alan Maguire <alan.maguire@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/173518994037.391279.2786805566359674586.stgit@devnote2 Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Acked-by: Florent Revest <revest@chromium.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Linus Torvalds
|
4c538044ee |
vsprintf: don't make the 'binary' version pack small integer arguments
The strange vbin_printf / bstr_printf interface used to save one- and two-byte printf numerical arguments into their packed format. That's more than a bit strange since the argument buffer is supposed to be an array of 'u32' words, and it's also very different from how the source of the data (varargs) work - which always do the normal integer type conversions, so 'char' and 'short' are always passed as int-sized anyway. This odd packing causes extra code complexity, and it really isn't worth it, since the space savings are simply not there: it only happens for formats like '%hd' (short) and '%hhd' (char), which are very rare indeed. In fact, the only other user of this interface seems to be the bpf helper code (bpf_bprintf_prepare()), and Alexei points out that that case doesn't support those truncated integer formatting options at all in the first place. As a result, bpf_bprintf_prepare() doesn't need any changes for this, and TRACE_BPRINT uses 'vbin_printf()' -> 'bstr_printf()' for the formatting and hopefully doesn't expose the odd packing any other way (knock wood). Link: https://lore.kernel.org/all/CAADnVQJy65oOubjxM-378O3wDfhuwg8TGa9hc-cTv6NmmUSykQ@mail.gmail.com/ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
8d4826cc8a |
vsnprintf: collapse the number format state into one single state
We'll squirrel away the size of the number in 'struct fmt' instead. We have two fairly separate state structures: the 'decode state' is in 'struct fmt', while the 'printout format' is in 'printf_spec'. Both structures are small enough to pass around in registers even across function boundaries (ie two words), even on 32-bit machines. The goal here is to avoid the case statements on the format states, which generate either deep conditionals or jump tables, while also keeping the state size manageable. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
2b76e39fca |
vsnprintf: mark the indirect width and precision cases unlikely
Make the format_decode() code generation easier to look at by getting the strange and unlikely cases out of line. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
f372b2256a |
vsnprintf: inline skip_atoi() again
At some point skip_atoi() had been marked 'noinline_for_stack', but it turns out that this is now a pessimization, and not inlining it actually results in a stack frame in format decoding due to the call and thus hurts stack usage rather than helping. With the simplistic atoi function inlined, the format decoding now needs no frame at all. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
614d13462d |
vsprintf: deal with format specifiers with a lookup table
We did the flags as an array earlier, they had simpler rules. The final format specifiers are a bit more complex since they have more fields to deal with, and we want to handle the length modifiers at the same time. But like the flags, we're better off just making it a data-driven table rather than some case statement. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
312f48b2e2 |
vsprintf: deal with format flags with a simple lookup table
Rather than a case statement, just look up the printf format flags (justification, zero-padding etc) using a small table. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
938df695e9 |
vsprintf: associate the format state with the format pointer
The vsnprintf() code is written as a state machine as it walks the format pointer, but for various historical reasons the state is oddly named and was encoded as the 'type' field in the 'struct printf_spec'. That naming came from the fact that the states used to not just encode the state of the state machine, but also the various integer types that would then be printed out. Let's make the state machine more obvious, and actually call it 'state', and associate it with the format pointer itself, rather than the 'printf_spec' that contains the currently decoded formatting specs. This also removes the bit packing from printf_spec, which makes it much easier on the compiler. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
9e0e6d8a32 |
vsprintf: fix calling convention for format_decode()
Every single caller wants to know what the next format location is, but instead the function returned the length of the processed part and so every single return statement in the format_decode() function was instead subtracting the start of the format string. The callers that that did want to know the length (in addition to the end of the format processing) already had to save off the start of the format string anyway. So this was all just doing extra processing both on the caller and callee sides. Just change the calling convention to return the end of the format processing, making everything simpler (and preparing for yet more simplification to come). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
03d23941bf |
vsprintf: avoid nested switch statement on same variable
Now that we have simplified the number format types, the top-level switch table can easily just handle all the remaining cases, and we don't need to have a case statement with a conditional on the same expression as the switch statement. We do want to fall through to the common 'number()' case, but that's trivially done by making the other case statements use 'continue' instead of 'break'. They are just looping back to the top, after all. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
be503db4d0 |
vsprintf: simplify number handling
Instead of dealing with all the different special types (size_t, unsigned char, ptrdiff_t..) just deal with the size of the integer type and the sign. This avoids a lot of unnecessary case statements, and the games we play with the value of the 'SIGN' flags value Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Peter Zijlstra
|
630a937016 |
Lockdep changes for v6.14:
- Use swap() macro in the ww_mutex test. - Minor fixes and documentation for lockdep configs on internal data structure sizes. - Some "-Wunused-function" warning fixes for Clang. Rust locking changes for v6.14: - Add Rust locking files into LOCKING PRIMITIVES maintainer entry. - Add `Lock<(), ..>::from_raw()` function to support abstraction on low level locking. - Expose `Guard::new()` for public usage and add type alias for spinlock and mutex guards. - Add lockdep checking when creating a new lock `Guard`. -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEj5IosQTPz8XU1wRHSXnow7UH+rgFAmdl/LoACgkQSXnow7UH +rhNrAf/epZAkkTmFgSqdx0ZNtKUA14Hqp9ie7SJylU6B9dfXmvZzaNBlowk5Edq yGGJQYuzuT+PFYZkNEuSZYcrqUq+b4s8MyF/8h3+lyZT6p1Jhapvq16id5yA1u0l MxMqAZC1D1ruDev2H8IxLlhHlDsSYS0erVNB2ZTFJwL0rZNyUXMZ4Y/o972GjAPt 8g9NlPB3ZTCVmyVtwy7rCexSuVTGDE3BRL9/W9q8eMZNnHq46xDsHRrn9NO4cDmv FogniH9xjFYetZMilYkpHwygAMX1P2t6x29Q+u464bStIWIOjkthYjkoePNXwZQd XgvN37j508VHLJ3sod38+IpnfhlZHA== =IJvk -----END PGP SIGNATURE----- Merge tag 'lockdep-for-tip.20241220' of git://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux into locking/core Lockdep changes for v6.14: - Use swap() macro in the ww_mutex test. - Minor fixes and documentation for lockdep configs on internal data structure sizes. - Some "-Wunused-function" warning fixes for Clang. Rust locking changes for v6.14: - Add Rust locking files into LOCKING PRIMITIVES maintainer entry. - Add `Lock<(), ..>::from_raw()` function to support abstraction on low level locking. - Expose `Guard::new()` for public usage and add type alias for spinlock and mutex guards. - Add lockdep checking when creating a new lock `Guard`. |
||
|
Dr. David Alan Gilbert
|
b9b894642f |
crypto: lib/gf128mul - Remove some bbe deadcode
gf128mul_4k_bbe(), gf128mul_bbe() and gf128mul_init_4k_bbe()
are part of the library originally added in 2006 by
commit
|
||
|
Breno Leitao
|
e1d3422c95 |
rhashtable: Fix potential deadlock by moving schedule_work outside lock
Move the hash table growth check and work scheduling outside the
rht lock to prevent a possible circular locking dependency.
The original implementation could trigger a lockdep warning due to
a potential deadlock scenario involving nested locks between
rhashtable bucket, rq lock, and dsq lock. By relocating the
growth check and work scheduling after releasing the rth lock, we break
this potential deadlock chain.
This change expands the flexibility of rhashtable by removing
restrictive locking that previously limited its use in scheduler
and workqueue contexts.
Import to say that this calls rht_grow_above_75(), which reads from
struct rhashtable without holding the lock, if this is a problem, we can
move the check to the lock, and schedule the workqueue after the lock.
Fixes:
|
||
|
David Howells
|
aabcabf274
|
netfs: Add a tracepoint to log the lifespan of folio_queue structs
Add a tracepoint to log the lifespan of folio_queue structs. For tracing illustrative purposes, folio_queues are tagged with the debug ID of whatever they're related to (typically a netfs_io_request) and a debug ID of their own. Signed-off-by: David Howells <dhowells@redhat.com> Link: https://lore.kernel.org/r/20241216204124.3752367-5-dhowells@redhat.com cc: Jeff Layton <jlayton@kernel.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
Peter Zijlstra
|
c2db11a750 |
Merge branch 'locking/urgent'
Sync with urgent -- avoid conflicts. Signed-off-by: Peter Zijlstra <peterz@infradead.org> |
||
|
Dave Airlie
|
d678c63534 |
drm-misc-next for 6.14:
UAPI Changes:
Cross-subsystem Changes:
Core Changes:
- connector: Add a mutex to protect ELD access, Add a helper to create
a connector in two steps
Driver Changes:
- amdxdna: Add RyzenAI-npu6 Support, various improvements
- rcar-du: Add r8a779h0 Support
- rockchip: various improvements
- zynqmp: Add DP audio support
- bridges:
- ti-sn65dsi83: Add ti,lvds-vod-swing optional properties
- panels:
- new panels: Tianma TM070JDHG34-00, Multi-Inno Technology MI1010Z1T-1CP11
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Merge tag 'drm-misc-next-2024-12-19' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next
drm-misc-next for 6.14:
UAPI Changes:
Cross-subsystem Changes:
Core Changes:
- connector: Add a mutex to protect ELD access, Add a helper to create
a connector in two steps
Driver Changes:
- amdxdna: Add RyzenAI-npu6 Support, various improvements
- rcar-du: Add r8a779h0 Support
- rockchip: various improvements
- zynqmp: Add DP audio support
- bridges:
- ti-sn65dsi83: Add ti,lvds-vod-swing optional properties
- panels:
- new panels: Tianma TM070JDHG34-00, Multi-Inno Technology MI1010Z1T-1CP11
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241219-truthful-demonic-hound-598f63@houat
|
||
|
Suren Baghdasaryan
|
e269b5d291 |
alloc_tag: fix module allocation tags populated area calculation
vm_module_tags_populate() calculation of the populated area assumes that
area starts at a page boundary and therefore when new pages are allocation,
the end of the area is page-aligned as well. If the start of the area is
not page-aligned then allocating a page and incrementing the end of the
area by PAGE_SIZE leads to an area at the end but within the area boundary
which is not populated. Accessing this are will lead to a kernel panic.
Fix the calculation by down-aligning the start of the area and using that
as the location allocated pages are mapped to.
[gehao@kylinos.cn: fix vm_module_tags_populate's KASAN poisoning logic]
Link: https://lkml.kernel.org/r/20241205170528.81000-1-hao.ge@linux.dev
[gehao@kylinos.cn: fix panic when CONFIG_KASAN enabled and CONFIG_KASAN_VMALLOC not enabled]
Link: https://lkml.kernel.org/r/20241212072126.134572-1-hao.ge@linux.dev
Link: https://lkml.kernel.org/r/20241130001423.1114965-1-surenb@google.com
Fixes:
|
||
|
David Wang
|
640a603943 |
mm/codetag: clear tags before swap
When CONFIG_MEM_ALLOC_PROFILING_DEBUG is set, kernel WARN would be
triggered when calling __alloc_tag_ref_set() during swap:
alloc_tag was not cleared (got tag for mm/filemap.c:1951)
WARNING: CPU: 0 PID: 816 at ./include/linux/alloc_tag.h...
Clear code tags before swap can fix the warning. And this patch also fix
a potential invalid address dereference in alloc_tag_add_check() when
CONFIG_MEM_ALLOC_PROFILING_DEBUG is set and ref->ct is CODETAG_EMPTY,
which is defined as ((void *)1).
Link: https://lkml.kernel.org/r/20241213013332.89910-1-00107082@163.com
Fixes:
|
||
|
Randy Dunlap
|
d5af79c05e |
Documentation: move dev-tools debugging files to process/debugging/
Move gdb and kgdb debugging documentation to the dedicated debugging directory (Documentation/process/debugging/). Adjust the index.rst files to follow the file movement. Adjust files that refer to these moved files to follow the file movement. Update location of kgdb.rst in MAINTAINERS file. Add a link from dev-tools/index to process/debugging/index. Note: translations are not updated. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Sebastian Fricke <sebastian.fricke@collabora.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: workflows@vger.kernel.org Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Daniel Thompson <danielt@kernel.org> Cc: Douglas Anderson <dianders@chromium.org> Cc: linux-debuggers@vger.kernel.org Cc: kgdb-bugreport@lists.sourceforge.net Cc: Doug Anderson <dianders@chromium.org> Cc: Alex Shi <alexs@kernel.org> Cc: Hu Haowen <2023002089@link.tyut.edu.cn> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-serial@vger.kernel.org Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Daniel Thompson <danielt@kernel.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241210000041.305477-1-rdunlap@infradead.org |
||
|
Carlos Llamas
|
88a79e88a9 |
lockdep: Clarify size for LOCKDEP_*_BITS configs
The LOCKDEP_*_BITS configs control the size of internal structures used by lockdep. The size is calculated as a power of two of the configured value (e.g. 16 => 64KB). Update these descriptions to more accurately reflect this, as "Bitsize" can be misleading. Suggested-by: Andrew Morton <akpm@linux-foundation.org> 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: Carlos Llamas <cmllamas@google.com> Acked-by: Waiman Long <longman@redhat.com> Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Link: https://lore.kernel.org/r/20241024183631.643450-3-cmllamas@google.com |
||
|
Carlos Llamas
|
e638072e61 |
lockdep: Fix upper limit for LOCKDEP_*_BITS configs
Lockdep has a set of configs used to determine the size of the static arrays that it uses. However, the upper limit that was initially setup for these configs is too high (30 bit shift). This equates to several GiB of static memory for individual symbols. Using such high values leads to linker errors: $ make defconfig $ ./scripts/config -e PROVE_LOCKING --set-val LOCKDEP_BITS 30 $ make olddefconfig all [...] ld: kernel image bigger than KERNEL_IMAGE_SIZE ld: section .bss VMA wraps around address space Adjust the upper limits to the maximum values that avoid these issues. The need for anything more, likely points to a problem elsewhere. Note that LOCKDEP_CHAINS_BITS was intentionally left out as its upper limit had a different symptom and has already been fixed [1]. Reported-by: J. R. Okajima <hooanon05g@gmail.com> Closes: https://lore.kernel.org/all/30795.1620913191@jrobl/ [1] 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> Acked-by: Waiman Long <longman@redhat.com> Signed-off-by: Carlos Llamas <cmllamas@google.com> Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Link: https://lore.kernel.org/r/20241024183631.643450-2-cmllamas@google.com |
||
|
Jakub Kicinski
|
5098462fba |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.13-rc3). No conflicts or adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Arnd Bergmann
|
322a00efec |
drm/log: select CONFIG_FONT_SUPPORT
Without fonts, this fails to link:
drivers/gpu/drm/clients/drm_log.o: in function `drm_log_init_client':
drm_log.c:(.text+0x3d4): undefined reference to `get_default_font'
Select this, like the other users do.
Fixes:
|
||
|
Vladimir Oltean
|
41d7ea3049 |
lib: packing: add pack_fields() and unpack_fields()
This is new API which caters to the following requirements: - Pack or unpack a large number of fields to/from a buffer with a small code footprint. The current alternative is to open-code a large number of calls to pack() and unpack(), or to use packing() to reduce that number to half. But packing() is not const-correct. - Use unpacked numbers stored in variables smaller than u64. This reduces the rodata footprint of the stored field arrays. - Perform error checking at compile time, rather than runtime, and return void from the API functions. Because the C preprocessor can't generate variable length code (loops), this is a bit tricky to do with macros. To handle this, implement macros which sanity check the packed field definitions based on their size. Finally, a single macro with a chain of __builtin_choose_expr() is used to select the appropriate macros. We enforce the use of ascending or descending order to avoid O(N^2) scaling when checking for overlap. Note that the macros are written with care to ensure that the compilers can correctly evaluate the resulting code at compile time. In particular, care was taken with avoiding too many nested statement expressions. Nested statement expressions trip up some compilers, especially when passing down variables created in previous statement expressions. There are two key design choices intended to keep the overall macro code size small. First, the definition of each CHECK_PACKED_FIELDS_N macro is implemented recursively, by calling the N-1 macro. This avoids needing the code to repeat multiple times. Second, the CHECK_PACKED_FIELD macro enforces that the fields in the array are sorted in order. This allows checking for overlap only with neighboring fields, rather than the general overlap case where each field would need to be checked against other fields. The overlap checks use the first two fields to determine the order of the remaining fields, thus allowing either ascending or descending order. This enables drivers the flexibility to keep the fields ordered in which ever order most naturally fits their hardware design and its associated documentation. The CHECK_PACKED_FIELDS macro is directly called from within pack_fields and unpack_fields, ensuring that all drivers using the API receive the benefits of the compile-time checks. Users do not need to directly call any of the macros directly. The CHECK_PACKED_FIELDS and its helper macros CHECK_PACKED_FIELDS_(0..50) are generated using a simple C program in scripts/gen_packed_field_checks.c This program can be compiled on demand and executed to generate the macro code in include/linux/packing.h. This will aid in the event that a driver needs more than 50 fields. The generator can be updated with a new size, and used to update the packing.h header file. In practice, the ice driver will need to support 27 fields, and the sja1105 driver will need to support 0 fields. This on-demand generation avoids the need to modify Kbuild. We do not anticipate the maximum number of fields to grow very often. - Reduced rodata footprint for the storage of the packed field arrays. To that end, we have struct packed_field_u8 and packed_field_u16, which define the fields with the associated type. More can be added as needed (unlikely for now). On these types, the same generic pack_fields() and unpack_fields() API can be used, thanks to the new C11 _Generic() selection feature, which can call pack_fields_u8() or pack_fields_16(), depending on the type of the "fields" array - a simplistic form of polymorphism. It is evaluated at compile time which function will actually be called. Over time, packing() is expected to be completely replaced either with pack() or with pack_fields(). Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Co-developed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://patch.msgid.link/20241210-packing-pack-fields-and-ice-implementation-v10-3-ee56a47479ac@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Vladimir Oltean
|
48c2752785 |
lib: packing: demote truncation error in pack() to a warning in __pack()
Most of the sanity checks in pack() and unpack() can be covered at
compile time. There is only one exception, and that is truncation of the
uval during a pack() operation.
We'd like the error-less __pack() to catch that condition as well. But
at the same time, it is currently the responsibility of consumer drivers
(currently just sja1105) to print anything at all when this error
occurs, and then discard the return code.
We can just print a loud warning in the library code and continue with
the truncated __pack() operation. In practice, having the warning is
very important, see commit
|
||
|
Vladimir Oltean
|
c4117091d0 |
lib: packing: create __pack() and __unpack() variants without error checking
A future variant of the API, which works on arrays of packed_field structures, will make most of these checks redundant. The idea will be that we want to perform sanity checks at compile time, not once for every function call. Introduce new variants of pack() and unpack(), which elide the sanity checks, assuming that the input was pre-sanitized. 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/20241210-packing-pack-fields-and-ice-implementation-v10-1-ee56a47479ac@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Randy Dunlap
|
28884915e6 |
Documentation: core-api: add generic parser docbook
Add the simple generic parser to the core-api docbook. It can be used for parsing all sorts of options throughout the kernel. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Eric Biggers <ebiggers@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241120060711.159783-1-rdunlap@infradead.org |
||
|
Eric Biggers
|
87fe0a1310 |
lib/crc32test: delete obsolete crc32test.c
Delete crc32test.c, since it has been superseded by crc_kunit.c. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k Cc: Vinicius Peixoto <vpeixoto@lkcamp.dev> Link: https://lore.kernel.org/r/20241202012056.209768-11-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
David Howells
|
c637bd0668 |
rxrpc: Generate rtt_min
Generate rtt_min as this is required by RACK-TLP. Signed-off-by: David Howells <dhowells@redhat.com> cc: Marc Dionne <marc.dionne@auristor.com> cc: linux-afs@lists.infradead.org Link: https://patch.msgid.link/20241204074710.990092-27-dhowells@redhat.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Linus Torvalds
|
7cb1b46631 |
- Remove if_not_guard() as it is generating incorrect code
- Fix the initialization of the fake lockdep_map for the first locked ww_mutex -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmdWw3gACgkQEsHwGGHe VUp7sQ//VM2HI27bo5iODm7bu7IhiFfAQkAcRcivBbyj0oUW57etF5l+dBLeC+kr sTTHg2iBqMaMcM1tzGEdJqfNs7dK+MWhn5STA2LXsVTBq72tbhAtLeX5oONS/V8h BeAPARB5pl5L9rQwy+FZ0Q9/XuFNhbMQhX4JxZn+FB3cg3PImC8Hjm0aKlNznB9e JRPhjLohoAoQ0Ty5zXJQWhShh6WLkAmec4OaBzQ+W4wGMLoNd80HgM/3ufTxDTbV I1+snOrOq9OR/00OUkuIFQyB50r/4/B5wNtTtlI2UsIjf1YuB03BeIApykc7ARB4 zdZGFvliNdPJjSyY/ein7gqsI+JirpPd5oSaICsAJ5nNGgL+lxfSfw2cv+S3jWz7 AJxiFweSQS4fVH/6FxpQ+5e0louqf5f0FgQy17X1vL0imnaZoUKDaHGJd+VGR4hE Rpee3/rqh5dFEODxMR87GjEcU+j/LZ/fWzAi/ciZ168YOA8LXeSC0ROvfsy3KhhD Eall0M96yqnhEDBZ3KacHguldLQpYhsMUxz8wVmICqPoYYZ31OvqhwmF1K13a1eL iKoPoFc2A4bdpBd144myZt8NkKpOAI4CPp74wDN1baj0HGKGuif477M5tiCWay3D bQ6FV1dhSLPjd/0GmdfZGJlIS89keS43cNilnCJYOMDalUcybw4= =SGkT -----END PGP SIGNATURE----- Merge tag 'locking_urgent_for_v6.13_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking fixes from Borislav Petkov: - Remove if_not_guard() as it is generating incorrect code - Fix the initialization of the fake lockdep_map for the first locked ww_mutex * tag 'locking_urgent_for_v6.13_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: headers/cleanup.h: Remove the if_not_guard() facility locking/ww_mutex: Fix ww_mutex dummy lockdep map selftest warnings |
||
|
Linus Torvalds
|
553c89ec31 |
24 hotfixes. 17 are cc:stable. 15 are MM and 9 are non-MM.
The usual bunch of singletons - please see the relevant changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ1U/QwAKCRDdBJ7gKXxA jnE7AQC0eyNNvaL5pLCIxN/Vmr8YeuWP1dldgI29TjrH/JKjSQEAihZNqVZYjoIT Gf7Y+IKnc4LbfAXcTe+MfJFeDexM5AU= =U5LQ -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2024-12-07-22-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "24 hotfixes. 17 are cc:stable. 15 are MM and 9 are non-MM. The usual bunch of singletons - please see the relevant changelogs for details" * tag 'mm-hotfixes-stable-2024-12-07-22-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (24 commits) iio: magnetometer: yas530: use signed integer type for clamp limits sched/numa: fix memory leak due to the overwritten vma->numab_state mm/damon: fix order of arguments in damos_before_apply tracepoint lib: stackinit: hide never-taken branch from compiler mm/filemap: don't call folio_test_locked() without a reference in next_uptodate_folio() scatterlist: fix incorrect func name in kernel-doc mm: correct typo in MMAP_STATE() macro mm: respect mmap hint address when aligning for THP mm: memcg: declare do_memsw_account inline mm/codetag: swap tags when migrate pages ocfs2: update seq_file index in ocfs2_dlm_seq_next stackdepot: fix stack_depot_save_flags() in NMI context mm: open-code page_folio() in dump_page() mm: open-code PageTail in folio_flags() and const_folio_flags() mm: fix vrealloc()'s KASAN poisoning logic Revert "readahead: properly shorten readahead when falling back to do_page_cache_ra()" selftests/damon: add _damon_sysfs.py to TEST_FILES selftest: hugetlb_dio: fix test naming ocfs2: free inode when ocfs2_get_init_inode() fails nilfs2: fix potential out-of-bounds memory access in nilfs_find_entry() ... |
||
|
Kees Cook
|
5c3793604f |
lib: stackinit: hide never-taken branch from compiler
The never-taken branch leads to an invalid bounds condition, which is by
design. To avoid the unwanted warning from the compiler, hide the
variable from the optimizer.
../lib/stackinit_kunit.c: In function 'do_nothing_u16_zero':
../lib/stackinit_kunit.c:51:49: error: array subscript 1 is outside array bounds of 'u16[0]' {aka 'short unsigned int[]'} [-Werror=array-bounds=]
51 | #define DO_NOTHING_RETURN_SCALAR(ptr) *(ptr)
| ^~~~~~
../lib/stackinit_kunit.c:219:24: note: in expansion of macro 'DO_NOTHING_RETURN_SCALAR'
219 | return DO_NOTHING_RETURN_ ## which(ptr + 1); \
| ^~~~~~~~~~~~~~~~~~
Link: https://lkml.kernel.org/r/20241117113813.work.735-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
David Wang
|
51f43d5d82 |
mm/codetag: swap tags when migrate pages
Current solution to adjust codetag references during page migration is
done in 3 steps:
1. sets the codetag reference of the old page as empty (not pointing
to any codetag);
2. subtracts counters of the new page to compensate for its own
allocation;
3. sets codetag reference of the new page to point to the codetag of
the old page.
This does not work if CONFIG_MEM_ALLOC_PROFILING_DEBUG=n because
set_codetag_empty() becomes NOOP. Instead, let's simply swap codetag
references so that the new page is referencing the old codetag and the old
page is referencing the new codetag. This way accounting stays valid and
the logic makes more sense.
Link: https://lkml.kernel.org/r/20241129025213.34836-1-00107082@163.com
Fixes:
|
||
|
Marco Elver
|
031e04bdc8 |
stackdepot: fix stack_depot_save_flags() in NMI context
Per documentation, stack_depot_save_flags() was meant to be usable from
NMI context if STACK_DEPOT_FLAG_CAN_ALLOC is unset. However, it still
would try to take the pool_lock in an attempt to save a stack trace in the
current pool (if space is available).
This could result in deadlock if an NMI is handled while pool_lock is
already held. To avoid deadlock, only try to take the lock in NMI context
and give up if unsuccessful.
The documentation is fixed to clearly convey this.
Link: https://lkml.kernel.org/r/Z0CcyfbPqmxJ9uJH@elver.google.com
Link: https://lkml.kernel.org/r/20241122154051.3914732-1-elver@google.com
Fixes:
|
||
|
Peter Zijlstra
|
cdd30ebb1b |
module: Convert symbol namespace to string literal
Clean up the existing export namespace code along the same lines of
commit
|
||
|
Waiman Long
|
d387ceb171 |
locking/lockdep: Enforce PROVE_RAW_LOCK_NESTING only if ARCH_SUPPORTS_RT
Relax the rule to set PROVE_RAW_LOCK_NESTING by default only for arches that supports PREEMPT_RT. For arches that do not support PREEMPT_RT, they will not be forced to address unimportant raw lock nesting issues when they want to enable PROVE_LOCKING. They do have the option to enable it to look for these raw locking nesting problems if they choose to. Suggested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20241128020009.83347-1-longman@redhat.com |
||
|
Thomas Hellström
|
0302d2fd6e |
locking/ww_mutex: Fix ww_mutex dummy lockdep map selftest warnings
The below commit introduces a dummy lockdep map, but didn't get
the initialization quite right (it should mimic the initialization
of the real ww_mutex lockdep maps). It also introduced a separate
locking api selftest failure. Fix these.
Closes: https://lore.kernel.org/lkml/Zw19sMtnKdyOVQoh@boqun-archlinux/
Fixes:
|
||
|
Eric Biggers
|
c14e853609 |
lib/crc16_kunit: delete obsolete crc16_kunit.c
This new test showed up in v6.13-rc1. Delete it since it is being superseded by crc_kunit.c, which is more comprehensive (tests multiple CRC variants without duplicating code, includes a benchmark, etc.). Cc: Vinicius Peixoto <vpeixoto@lkcamp.dev> Link: https://lore.kernel.org/r/20241202012056.209768-10-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
e47d9b1a76 |
lib/crc_kunit.c: add KUnit test suite for CRC library functions
Add a KUnit test suite for the crc16, crc_t10dif, crc32_le, crc32_be, crc32c, and crc64_be library functions. It avoids code duplication by sharing most logic among all CRC variants. The test suite includes: - Differential fuzz test of each CRC function against a simple bit-at-a-time reference implementation. - Test for CRC combination, when implemented by a CRC variant. - Optional benchmark of each CRC function with various data lengths. This is intended as a replacement for crc32test and crc16_kunit, as well as a new test for CRC variants which didn't previously have a test. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Cc: Vinicius Peixoto <vpeixoto@lkcamp.dev> Link: https://lore.kernel.org/r/20241202012056.209768-9-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com> |
||
|
Eric Biggers
|
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> |
||
|
Eric Biggers
|
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> |
||
|
Eric Biggers
|
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> |
||
|
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> |
||
|
Eric Biggers
|
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> |
||
|
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' |
||
|
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> |
||
|
Dr. David Alan Gilbert
|
f69e63756f |
printf: Remove unused 'bprintf'
bprintf() is unused. Remove it. It was added in the commit
|
||
|
Linus Torvalds
|
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()
...
|
||
|
Luis Chamberlain
|
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
|
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
|
||
|
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 |
||
|
Linus Torvalds
|
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
...
|
||
|
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> |
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Wei Yang
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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:
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Wei Yang
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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> |
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Wei Yang
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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> |
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Wei Yang
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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> |
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Sabyrzhan Tasbolatov
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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> |
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Sabyrzhan Tasbolatov
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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:
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Andrew Morton
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2ec0859039 |
Merge branch 'mm-hotfixes-stable' into mm-stable
Pick up
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Luis Chamberlain
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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> |
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Suren Baghdasaryan
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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> |
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Suren Baghdasaryan
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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> |
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Suren Baghdasaryan
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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> |
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Suren Baghdasaryan
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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> |