Commit Graph

1445597 Commits

Author SHA1 Message Date
Linus Torvalds
e312f536f6 lsm/stable-7.1 PR 20260519
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Merge tag 'lsm-pr-20260519' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm

Pull lsm fix from Paul Moore:
 "A single LSM patch to add a missing credential mutex lock to the
  lsm_set_self_attr(2) syscall so it behaves similar to the associated
  procfs API and avoids issues with ptrace"

* tag 'lsm-pr-20260519' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm:
  lsm: hold cred_guard_mutex for lsm_set_self_attr()
2026-05-19 15:31:35 -05:00
Linus Torvalds
27fa82620c ata fixes for 7.1-rc5
- Make sure that the issuing of a deferred non-NCQ command via
    workqueue feature is only used when mixing NCQ and non-NCQ commands
    to the same link (i.e. return value ATA_DEFER_LINK), and nothing
    else. This way we will not incorrectly try to use the feature for
    e.g. PATA drivers.
 
  - The deferred non-NCQ command was stored in a per-port struct.
    When using Port Multipliers with FIS-Based Switching, we would thus
    needlessly defer commands to all other links. Store the deferred QC
    in a per-link struct, such that Port Multipliers with FBS will get
    the same performance as before.
 
  - The issuing of a deferred non-NCQ command via workqueue feature
    broke support for Port Multipliers using Command-Based Switching.
    The issuing of a deferred non-NCQ command via workqueue feature is
    not compatible with the use of ap->excl_link, which PMPs with CBS
    use for fairness (using implicit round robin).
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Merge tag 'ata-7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux

Pull ata fixes from Niklas Cassel:

 - Make sure that the issuing of a deferred non-NCQ command via
   workqueue feature is only used when mixing NCQ and non-NCQ commands
   to the same link (i.e. return value ATA_DEFER_LINK), and nothing
   else. This way we will not incorrectly try to use the feature for
   e.g. PATA drivers

 - The deferred non-NCQ command was stored in a per-port struct. When
   using Port Multipliers with FIS-Based Switching, we would thus
   needlessly defer commands to all other links. Store the deferred QC
   in a per-link struct, such that Port Multipliers with FBS will get
   the same performance as before

 - The issuing of a deferred non-NCQ command via workqueue feature broke
   support for Port Multipliers using Command-Based Switching. The
   issuing of a deferred non-NCQ command via workqueue feature is not
   compatible with the use of ap->excl_link, which PMPs with CBS use for
   fairness (using implicit round robin)

* tag 'ata-7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
  ata: libata-scsi: do not needlessly defer commands when using PMP with FBS
  ata: libata-scsi: do not use the deferred QC feature on PMPs with CBS
  ata: libata-scsi: do not use the deferred QC feature for ATA_DEFER_PORT
  ata: libata-scsi: improve readability of ata_scsi_qc_issue()
2026-05-19 14:00:48 -05:00
Linus Torvalds
1a2ab0feaa three ksmbd server fixes
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Merge tag 'v7.1-rc4-ksmbd-server-fixes' of git://git.samba.org/ksmbd

Pull smb server fixes from Steve French:

 - Fix two null pointer dereferences and a memory leak

* tag 'v7.1-rc4-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
  ksmbd: fix null pointer dereference in compare_guid_key()
  ksmbd: fix null pointer dereference in proc_show_files()
  ksmbd: fix SID memory leak in set_posix_acl_entries_dacl() on overflow
2026-05-19 09:49:32 -07:00
Linus Torvalds
0c0b282d50 Description for this pull request:
- Check the index depth limit via ntfs_icx_parent_inc(), avoiding context
    corruption from excessively deep child chains.
  - Switch security descriptor allocation to kzalloc() to avoid leaking
    uninitialized memory.
  - Prevent an inconsistent state where vol->volume_label becomes NULL on
    allocation failure.
  - Validate MFT records by verifying that attrs_offset sits within
    bytes_in_use.
  - Fix an off-by-one boundary comparison, correctly catching the
    out-of-range MFT record number
  - Validate the attribute name offset and length bounds prior to AT_UNUSED
    enumeration.
  - Check for a valid left neighbor before runlist merges to prevent an
    8byte out-of-bounds write on crafted volumes.
  - Add the missing record comparison against $MFTMirr during mount.
  - Fix wrong inode lookup when writing extent MFT records.
  - Redirty folio on memory allocation failure in ntfs_write_mft_block().
  - Capture and propagate $MFTMirr sync errors during writeback.
  - Ensure MFT mirror and synchronous writes wait for I/O completion.
  - Fix buffer overflow/heap over-read in ntfs_bdev_write() when cluster
    size is smaller than PAGE_SIZE.
  - Fix use-after-free in ntfs_inode_sync_filename() when parent index inode
    is evicted while still holding its mrec_lock.
  - Update resident attribute length validation to match $AttrDef.
  - Fix refcount underflow and UAF of the global upcase table.
  - Fix two smatch warnings.
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Merge tag 'ntfs-for-7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs

Pull ntfs fixes from Namjae Jeon:

 - Check the index depth limit via ntfs_icx_parent_inc(), avoiding
   context corruption from excessively deep child chains

 - Switch security descriptor allocation to kzalloc() to avoid leaking
   uninitialized memory

 - Prevent an inconsistent state where vol->volume_label becomes NULL on
   allocation failure

 - Validate MFT records by verifying that attrs_offset sits within
   bytes_in_use

 - Fix an off-by-one boundary comparison, correctly catching the
   out-of-range MFT record number

 - Validate the attribute name offset and length bounds prior to
   AT_UNUSED enumeration

 - Check for a valid left neighbor before runlist merges to prevent an
   8byte out-of-bounds write on crafted volumes

 - Add the missing record comparison against $MFTMirr during mount

 - Fix wrong inode lookup when writing extent MFT records

 - Redirty folio on memory allocation failure in ntfs_write_mft_block()

 - Capture and propagate $MFTMirr sync errors during writeback

 - Ensure MFT mirror and synchronous writes wait for I/O completion

 - Fix buffer overflow/heap over-read in ntfs_bdev_write() when cluster
   size is smaller than PAGE_SIZE

 - Fix use-after-free in ntfs_inode_sync_filename() when parent index
   inode is evicted while still holding its mrec_lock

 - Update resident attribute length validation to match $AttrDef

 - Fix refcount underflow and UAF of the global upcase table

 - Fix two smatch warnings

* tag 'ntfs-for-7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs:
  ntfs: restore $MFT mirror contents check
  ntfs: fix empty_buf and ra lifetime bugs in ntfs_empty_logfile()
  ntfs: validate attribute name bounds before returning it
  ntfs: fix MFT bitmap scan 2^32 boundary check
  ntfs: validate MFT attrs_offset against bytes_in_use
  ntfs: fix missing kstrdup() error check in ntfs_write_volume_label()
  ntfs: avoid leaking uninitialised bytes in new security descriptors
  ntfs: fix out-of-bounds write in ntfs_index_walk_down()
  ntfs: fix out-of-bounds write in ntfs_rl_collapse_range() merge path
  ntfs: fix variable dereferenced before check ni in ntfs_attr_open()
  ntfs: fix default_upcase refcount underflow and UAF on fs_context teardown
  ntfs: match ntfs_resident_attr_min_value_length with $AttrDef
  ntfs: avoid use-after-free of index inode in ntfs_inode_sync_filename()
  ntfs: fix copy length in ntfs_bdev_write() for non-page-aligned start
  ntfs: wait for sync mft writes to complete
  ntfs: capture mft mirror sync errors in ntfs_write_mft_block()
  ntfs: redirty folio when ntfs_write_mft_block() runs out of memory
  ntfs: use base mft_no when looking up base inode for extent record
  ntfs: fix variable dereferenced before check ni and attr in ntfs_attrlist_entry_add()
2026-05-19 09:47:23 -07:00
Linus Torvalds
650d21334c Second round of Kbuild fixes for 7.1
- modpost: prevent stack buffer overflow in do_input_entry() and do_dmi_entry()
 
     Defensively replace unbound sprintf() calls in file2alias to prevent
     silent stack overflows and detect alias name overflows with proper
     error message.
 
   - kbuild: pacman-pkg: make "rc" releases adhere to pacman versioning scheme
 
     Enable smooth upgrades from "rc" releases w/ pacman packages.
 
 Cc: Hasan Basbunar <basbunarhasan@gmail.com>
 Cc: Nathan Chancellor <nathan@kernel.org>
 Cc: Randy Dunlap <rdunlap@infradead.org>
 Cc: Thomas Weißschuh <linux@weissschuh.net>
 Cc: Viktor Jägersküpper <viktor_jaegerskuepper@freenet.de>
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Merge tag 'kbuild-fixes-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux

Pull Kbuild fixes from Nicolas Schier:

 - modpost: prevent stack buffer overflow in do_input_entry() and
   do_dmi_entry()

   Defensively replace unbound sprintf() calls in file2alias to prevent
   silent stack overflows and detect alias name overflows with proper
   error message.

 - kbuild: pacman-pkg: make "rc" releases adhere to pacman versioning
   scheme

   Enable smooth upgrades from "rc" releases w/ pacman packages.

* tag 'kbuild-fixes-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux:
  kbuild: pacman-pkg: make "rc" releases adhere to pacman versioning scheme
  modpost: prevent stack buffer overflow in do_input_entry() and do_dmi_entry()
2026-05-19 09:43:24 -07:00
Linus Torvalds
c6e99c10fd 14 hotfixes. 9 are for MM. 10 are cc:stable and the remainder are for
post-7.1 issues or aren't deemed suitable for backporting.
 
 There's a 2 patch MAINTAINERS series from Mike Rapoport which updates us
 for the new KEXEC/KDUMP/crash/LUO/etc arrangements.  And a 2 patch series
 from Muchun Song to fix a couple of memory-hotplug issues.  Otherwise
 singletons, please see the changelogs for details.
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Merge tag 'mm-hotfixes-stable-2026-05-18-21-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:
 "14 hotfixes. 9 are for MM. 10 are cc:stable and the remainder are for
  post-7.1 issues or aren't deemed suitable for backporting.

  There's a two-patch MAINTAINERS series from Mike Rapoport which
  updates us for the new KEXEC/KDUMP/crash/LUO/etc arrangements. And
  another two-patch series from Muchun Song to fix a couple of
  memory-hotplug issues. Otherwise singletons, please see the changelogs
  for details"

* tag 'mm-hotfixes-stable-2026-05-18-21-07' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm/memory: fix spurious warning when unmapping device-private/exclusive pages
  mm: fix __vm_normal_page() to handle missing support for pmd_special()/pud_special()
  drivers/base/memory: fix memory block reference leak in poison accounting
  mm/memory_hotplug: fix memory block reference leak on remove
  lib: kunit_iov_iter: fix test fail on powerpc
  mm/page_alloc: fix initialization of tags of the huge zero folio with init_on_free
  MAINTAINERS: add kexec@ list to LIVE UPDATE ENTRY
  MAINTAINERS: add tree for KDUMP and KEXEC
  selftests/mm: run_vmtests.sh: fix destructive tests invocation
  scripts/gdb: slab: update field names of struct kmem_cache
  scripts/gdb: mm: cast untyped symbols in x86_page_ops
  mm/damon: fix damos_stat tracepoint format for sz_applied
  mm/damon/sysfs-schemes: call missing mem_cgroup_iter_break()
  mm/migrate_device: fix spinlock leak in migrate_vma_insert_huge_pmd_page
2026-05-19 07:49:33 -07:00
Viktor Jägersküpper
2025507131
kbuild: pacman-pkg: make "rc" releases adhere to pacman versioning scheme
The package versioning scheme does not enable smooth upgrades from "rc"
releases to the corresponding stable releases (e.g. 7.0.0-rc7 -> 7.0.0)
because pacman considers that a downgrade due to the underscore in
pkgver (e.g. 7.0.0_rc7), see e.g. vercmp(8) for an explanation of the
package version comparison used by pacman. Package versions which are
derived from said releases (e.g. built from git revisions) are
similarly affected. Fix this by modifying pkgver in order to remove the
hyphen from kernel versions containing "-rcN", where N is a
non-negative integer.

Acked-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Viktor Jägersküpper <viktor_jaegerskuepper@freenet.de>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Link: https://patch.msgid.link/20260515215913.92481-1-viktor_jaegerskuepper@freenet.de
Fixes: c8578539de ("kbuild: add script and target to generate pacman package")
Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-05-19 12:29:19 +02:00
Hasan Basbunar
49f8fcde68
modpost: prevent stack buffer overflow in do_input_entry() and do_dmi_entry()
Several functions in scripts/mod/file2alias.c build the module alias
string by repeatedly appending into a fixed-size on-stack buffer:

	char alias[256] = {};
	...
	sprintf(alias + strlen(alias), "%X,*", i);

This pattern is unbounded and silently corrupts the stack when the
formatted output exceeds the destination size. Two functions in this
file are realistically reachable with input that overflows their
buffer:

1. do_input_entry() appends across nine bitmap classes
   (evbit/keybit/relbit/absbit/mscbit/ledbit/sndbit/ffbit/swbit). The
   keybit case alone scans bits from INPUT_DEVICE_ID_KEY_MIN_INTERESTING
   (0x71) to INPUT_DEVICE_ID_KEY_MAX (0x2ff), 655 iterations; if a
   MODULE_DEVICE_TABLE(input, ...) populates keybit[] densely, the
   emission reaches ~3132 bytes — overflowing the 256-byte buffer by
   about 12x. include/linux/mod_devicetable.h declares storage for the
   full bit range ("keybit[INPUT_DEVICE_ID_KEY_MAX / BITS_PER_LONG + 1]"),
   so the worst case is reachable per the ABI.

2. do_dmi_entry() emits one ":<prefix>*<filtered_substr>*" segment per
   matched DMI field, up to 4 matches per dmi_system_id. Each substr
   is sized as char[79] in struct dmi_strmatch (mod_devicetable.h:584),
   and dmi_ascii_filter() copies it verbatim into the alias buffer
   without bounds. Worst case: 4 × (1 + 3 + 1 + 79 + 1) = 336 bytes
   into alias[256], an 80-byte overflow.

No driver in the current tree triggers either case — every in-tree
INPUT_DEVICE_ID_MATCH_KEYBIT user populates keybit[] very sparsely
(1-3 bits), and no in-tree dmi_system_id has four maximally-long
matches. The concern is defense-in-depth: both unbounded sprintf
chains are silent stack-corruption primitives in a host build tool,
and the buffer sizes have not been revisited since the corresponding
code was first introduced.

The other do_*_entry() handlers in this file (do_usb_entry,
do_cpu_entry, do_typec_entry, ...) were audited and are bounded by
their input field sizes (uint16 IDs, fixed-length keys); their alias
buffers do not need this treatment.

Reproduced under AddressSanitizer with a stand-alone harness mirroring
do_input on a fully-populated keybit:

  ==18319==ERROR: AddressSanitizer: stack-buffer-overflow
  WRITE of size 2 at offset 288 in frame [32, 288) 'alias'
    #6 do_input poc.c:44

  Stack-canary build:
  Abort trap: 6  (strlen(alias)=3134, cap was 256-1)

Add a small alias_append() helper around vsnprintf with a remaining-
space check and call fatal() on overflow, matching the modpost style
for unrecoverable build conditions. do_input() takes the buffer size
as a new parameter; do_input_entry() and do_dmi_entry() pass
sizeof(alias) at every call site. dmi_ascii_filter() takes the
remaining buffer size as well and aborts on truncation. This bounds
every write into the on-stack buffers and turns the latent overflow
into a clean build error if it is ever reached.

Fixes: 1d8f430c15 ("[PATCH] Input: add modalias support")
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Hasan Basbunar <basbunarhasan@gmail.com>
Link: https://patch.msgid.link/20260505161102.44087-1-basbunarhasan@gmail.com
Signed-off-by: Nicolas Schier <nsc@kernel.org>
2026-05-19 12:29:18 +02:00
Linus Torvalds
ab5fce87a7 perf-tools fixes for v7.1-rc5
An usual sync-up for the header files and related codes.
 
  - copy headers that are used for perf trace syscall beautifier
  - update the beautifier scripts according to the changes
  - not to show differences in the headers by default
 
 Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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Merge tag 'perf-tools-fixes-for-v7.1-2026-05-18' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools

Pull perf-tools fixes
 "An usual sync-up for the header files and related code:

   - copy headers that are used for perf trace syscall beautifier

   - update the beautifier scripts according to the changes

   - don't show differences in the headers by default"

* tag 'perf-tools-fixes-for-v7.1-2026-05-18' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools:
  perf trace: Update beautifier script for clone flags
  perf trace: Add beautifier script for fsmount flags
  perf build: Add make check-headers target
  perf trace: Sync uapi/linux/sched.h with the kernel source
  perf trace: Sync uapi/linux/mount.h with the kernel source
  perf trace: Sync uapi/linux/fs.h with the kernel source
  perf trace: Sync linux/socket.h with the kernel source
2026-05-18 17:55:42 -07:00
David Howells
8cf8b5ae8e cifs: Fix undefined variables
Fix a couple of undefined variables introduced by the patch to fix tearing
on ->remote_i_size and ->zero_point.  For some reason, make W=1 with gcc
doesn't give undefined variable warnings (but clang does).

Fixes: 2c8f4742bb ("netfs: Fix potential for tearing in ->remote_i_size and ->zero_point")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202605031459.eX5UbO3K-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202605021450.ca5QGqLH-lkp@intel.com/
cc: Steve French <sfrench@samba.org>
cc: Paulo Alcantara <pc@manguebit.org>
cc: Matthew Wilcox <willy@infradead.org>
cc: Christian Brauner <brauner@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-05-18 17:50:06 -07:00
Nathan Chancellor
4d3a2a466b HID: core: Fix size_t specifier in hid_report_raw_event()
When building for 32-bit platforms, for which 'size_t' is
'unsigned int', there are warnings around using the incorrect format
specifier to print bsize in hid_report_raw_event():

  drivers/hid/hid-core.c:2054:29: error: format specifies type 'long' but the argument has type 'size_t' (aka 'unsigned int') [-Werror,-Wformat]
   2053 |                 hid_warn_ratelimited(hid, "Event data for report %d is incorrect (%d vs %ld)\n",
        |                                                                                         ~~~
        |                                                                                         %zu
   2054 |                                      report->id, csize, bsize);
        |                                                         ^~~~~
  drivers/hid/hid-core.c:2076:29: error: format specifies type 'long' but the argument has type 'size_t' (aka 'unsigned int') [-Werror,-Wformat]
   2075 |                 hid_warn_ratelimited(hid, "Event data for report %d was too short (%d vs %ld)\n",
        |                                                                                          ~~~
        |                                                                                          %zu
   2076 |                                      report->id, rsize, bsize);
        |                                                         ^~~~~

Use the proper 'size_t' format specifier, '%zu', to clear up the
warnings.

Cc: stable@vger.kernel.org
Fixes: 2c85c61d13 ("HID: pass the buffer size to hid_report_raw_event")
Reported-by: Miguel Ojeda <ojeda@kernel.org>
Closes: https://lore.kernel.org/20260516020430.110135-1-ojeda@kernel.org/
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-05-18 13:05:41 -07:00
Namhyung Kim
9a424b62f7 Merge branch 'perf-upstream' 2026-05-18 12:41:38 -07:00
Linus Torvalds
4bf5d3da79 [GIT PULL for v7.1-rc5] media fixes
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Merge tag 'media/v7.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fix from Mauro Carvalho Chehab:
 "Fix inverted error logic in ttusbir driver"

* tag 'media/v7.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: rc: ttusbir: fix inverted error logic
2026-05-18 08:45:32 -07:00
Linus Torvalds
5dfa01ef37 vfs-7.1-rc5.fixes
Please consider pulling these changes from the signed vfs-7.1-rc5.fixes tag.
 
 Thanks!
 Christian
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Merge tag 'vfs-7.1-rc5.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Pull vfs fixes from Christian Brauner:
 "This contains a fixes for the current development cycle. Note that AI
  related review sometimes delays fixes a bit because we find more fixes
  for the fixes. I might try and send smaller but more fixes PRs if this
  trend keeps up.

   - Fix various netfslib bugs

   - Fix an out-of-bounds write when listing idmappings

   - Fix the return values in jfs_mkdir() and orangefs_mkdir()

   - Fix a writeback writeback array overflow in fuse

   - Fix a forced iversion increment on lazytime timestamp updates

   - Reject a negative timeval component in kern_select()

   - Fix error return when vfs_mkdir() fails in the cachefiles code

   - Fix wrong error code returned for pidns ioctls"

* tag 'vfs-7.1-rc5.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (31 commits)
  cachefiles: Fix error return when vfs_mkdir() fails
  afs: Fix the locking used by afs_get_link()
  netfs, afs: Fix write skipping in dir/link writepages
  netfs: Fix netfs_read_folio() to wait on writeback
  netfs: Fix folio->private handling in netfs_perform_write()
  netfs: Fix partial invalidation of streaming-write folio
  netfs: Fix potential UAF in netfs_unlock_abandoned_read_pages()
  netfs: Fix leak of request in netfs_write_begin() error handling
  netfs: Fix early put of sink folio in netfs_read_gaps()
  netfs: Fix write streaming disablement if fd open O_RDWR
  netfs: Fix read-gaps to remove netfs_folio from filled folio
  netfs: Fix potential deadlock in write-through mode
  netfs: Fix streaming write being overwritten
  netfs: Defer the emission of trace_netfs_folio()
  netfs: Fix netfs_invalidate_folio() to clear dirty bit if all changes gone
  netfs: Fix overrun check in netfs_extract_user_iter()
  netfs: fix error handling in netfs_extract_user_iter()
  netfs: Fix potential uninitialised var in netfs_extract_user_iter()
  netfs: fix VM_BUG_ON_FOLIO() issue in netfs_write_begin() call
  netfs: Fix zeropoint update where i_size > remote_i_size
  ...
2026-05-18 07:30:31 -07:00
Niklas Cassel
759e8756da ata: libata-scsi: do not needlessly defer commands when using PMP with FBS
The ACS specification does not allow a non-NCQ command to be issued while
an NCQ command is outstanding.

Commit 0ea84089db ("ata: libata-scsi: avoid Non-NCQ command starvation")
introduced a feature where a deferred non-NCQ command gets issued from a
workqueue. The design stores a single non-NCQ command per port.

However, when using Port Multipliers (PMPs), specifically PMPs that
support FIS-Based Switching (FBS), non-NCQ and NCQ commands can be mixed
on the same port, just not for the same link, see e.g. ata_std_qc_defer()
which is, and always has operated on a per-link basis.

Therefore, move the deferred_qc from struct ata_port to struct ata_link.
This way, when using a PMP with FBS, we will not needlessly defer commands
to all other links, just because one link issued a non-NCQ command while
having an NCQ command outstanding. Only commands for that specific link
will be deferred. This is in line with how PMPs with FBS worked before
commit 0ea84089db ("ata: libata-scsi: avoid Non-NCQ command starvation").

Fixes: 0ea84089db ("ata: libata-scsi: avoid Non-NCQ command starvation")
Tested-by: Tommy Kelly <linux@tkel.ly>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Niklas Cassel <cassel@kernel.org>
2026-05-18 12:26:51 +02:00
Niklas Cassel
f233124fb3 ata: libata-scsi: do not use the deferred QC feature on PMPs with CBS
When using Port Multipliers (PMPs) with Command-Based Switching (CBS), you
can only issue commands to one link at a time. For PMPs with CBS, there is
already code to handle commands being sent to different links in
sata_pmp_qc_defer_cmd_switch() using ap->excl_link. sata_sil24 also makes
use of ap->excl_link.

A user on the list reported that commit 0ea84089db ("ata: libata-scsi:
avoid Non-NCQ command starvation") broke PMPs with CBS. The commit
introduced code that stores a deferred qc in ap->deferred_qc, to later be
issued via a workqueue. It turns out that this change is incompatible with
the existing ap->excl_link handling used by PMPs with CBS.

Thus, modify sata_pmp_qc_defer_cmd_switch() and sil24_qc_defer() to return
ATA_DEFER_LINK_EXCL, and make sure that the deferred QC handling via
workqueue is not used for this return value.

This way, PMPs with CBS will work once again. Note that the starvation
referenced in commit 0ea84089db ("ata: libata-scsi: avoid Non-NCQ
command starvation") can only happen on libsas ports, and libsas does not
support Port Multipliers, thus there is no harm of reverting back to the
previous way of deferring commands for PMPs with CBS.

Non-libsas ports connected to anything but a PMP with CBS (e.g. a normal
drive or a PMP with FBS) will continue using the deferred workqueue, since
it does result in lower completion latencies for non-NCQ commands, even
though the workqueue is not strictly needed to avoid starvation for
non-libsas ports.

If we want to modify the scope of the workqueue issuing to also handle
PMPs with CBS, then we should ensure that we can save both NCQ and non-NCQ
commands in ap->deferred_qc, while also removing the existing PMP CBS
handling using ap->excl_link, such that we don't duplicate features.

While at it, also add a comment explaining how the ap->excl_link mechanism
works.

Fixes: 0ea84089db ("ata: libata-scsi: avoid Non-NCQ command starvation")
Tested-by: Tommy Kelly <linux@tkel.ly>
Reported-by: Tommy Kelly <linux@tkel.ly>
Closes: https://lore.kernel.org/linux-ide/ce09cc21-a8e9-4845-b205-35411e22fba9@tkel.ly/
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Niklas Cassel <cassel@kernel.org>
2026-05-18 12:25:28 +02:00
Niklas Cassel
ce4548807d ata: libata-scsi: do not use the deferred QC feature for ATA_DEFER_PORT
The deferred QC feature was meant to handle mixed NCQ and non-NCQ commands,
i.e. for return value ATA_DEFER_LINK.

ATA_DEFER_PORT is returned by PATA drivers, but also certain SATA drivers
like sata_mv and sata_sil24 that uses ap->excl_link to workaround hardware
bugs in these HBAs. Regardless of the reason, using the deferred QC feature
for ATA_DEFER_PORT is always wrong, and will break the ap->excl_link usage
of the SATA drivers that rely on that feature.

Modify ata_scsi_qc_issue() to only use the deferred QC feature when mixing
NCQ and non-NCQ commands, i.e. ATA_DEFER_LINK.

Fixes: 0ea84089db ("ata: libata-scsi: avoid Non-NCQ command starvation")
Tested-by: Tommy Kelly <linux@tkel.ly>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Niklas Cassel <cassel@kernel.org>
2026-05-18 12:11:46 +02:00
Niklas Cassel
360190bd96 ata: libata-scsi: improve readability of ata_scsi_qc_issue()
Improve readability of ata_scsi_qc_issue().

No functional changes.

Tested-by: Tommy Kelly <linux@tkel.ly>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Niklas Cassel <cassel@kernel.org>
2026-05-18 12:10:34 +02:00
Linus Torvalds
5200f5f493 Linux 7.1-rc4 2026-05-17 13:59:58 -07:00
Linus Torvalds
e5d505e366 tracing fixes for 7.1:
- Add more functions to the remote allowed list
 
   randconfig found more functions that are allowed for the remote code for
   s390 and arm. Add them to the allowed list.
 
 - Fix remote_test error path
 
   If one of the simple ring buffers fails to load, the code is supposed to
   rollback its initialized buffers. Instead of rolling back the buffers for
   the failed load, it uses the global variable and rolls back all the
   successfully loaded buffers.
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Merge tag 'trace-v7.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing fixes from Steven Rostedt:

 - Add more functions to the remote allowed list

   randconfig found more functions that are allowed for the remote code
   for s390 and arm. Add them to the allowed list.

 - Fix remote_test error path

   If one of the simple ring buffers fails to load, the code is supposed
   to rollback its initialized buffers. Instead of rolling back the
   buffers for the failed load, it uses the global variable and rolls
   back all the successfully loaded buffers.

* tag 'trace-v7.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tracing: Fix desc in error path for the trace remote test module
  ring-buffer remote: Avoid unexpected symbol warnings (arm, s390)
2026-05-17 12:02:31 -07:00
Carlos López
23e6a1ca04 virt: sev-guest: Do not use host-controlled page order in cleanup path
When issuing an extended guest request (SVM_VMGEXIT_EXT_GUEST_REQUEST),
get_ext_report() allocates a buffer to retrieve a certificate blob from the
host, keeping track of its size in report_req->certs_len.

However, the host may return SNP_GUEST_VMM_ERR_INVALID_LEN, indicating
an invalid buffer size, as well as the expected length of such buffer.
get_ext_report() subsequently updates report_req->certs_len with the
host-controlled value, and cleans up the buffer by computing a page order
from such value. This is incorrect, as the host-provided length may not
match the page order of the original allocation, potentially resulting
in corruption in the page allocator.

Fix this by using alloc_pages_exact() instead, and reusing @npages to
compute the size passed to free_pages_exact(). For consistency, also
use @npages to compute the size when allocating the pages, even though
this last change has no functional effect.

Fixes: 3e385c0d6c ("virt: sev-guest: Move SNP Guest Request data pages handling under snp_cmd_mutex")
Signed-off-by: Carlos López <clopez@suse.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Michael Roth <michael.roth@amd.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2026-05-17 11:45:07 -07:00
Linus Torvalds
e7f24a388e Fix x86 boot crash for non-kjump kexecs, by David Woodhouse.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2026-05-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fix from Ingo Molnar:

 - Fix x86 boot crash for non-kjump kexecs (David Woodhouse)

* tag 'x86-urgent-2026-05-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/kexec: Push kjump return address even for non-kjump kexec
2026-05-17 11:40:18 -07:00
Linus Torvalds
46cd5b22e5 Fix potential garbage reads in the vDSO gettimeofday code,
by Thomas Weißschuh.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'timers-urgent-2026-05-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fix from Ingo Molnar:

 - Fix potential garbage reads in the vDSO gettimeofday code
   (Thomas Weißschuh)

* tag 'timers-urgent-2026-05-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  vdso/gettimeofday: Reload sequence counter after switch to time page in do_aux()
2026-05-17 11:07:09 -07:00
Linus Torvalds
c97481ab79 Fix ARM64-specific rseq regressions, by Mark Rutland.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2026-05-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fix from Ingo Molnar:

 - Fix ARM64-specific rseq regressions (Mark Rutland)

* tag 'sched-urgent-2026-05-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  arm64/entry: Fix arm64-specific rseq brokenness
2026-05-17 10:59:32 -07:00
Linus Torvalds
daa3de23f9 Fix an MCE polling interval adjustment regression, by Borislav Petkov.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'ras-urgent-2026-05-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull MCE fix from Ingo Molnar:

 - Fix an MCE polling interval adjustment regression (Borislav Petkov)

* tag 'ras-urgent-2026-05-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mce: Restore MCA polling interval halving
2026-05-17 10:50:13 -07:00
Linus Torvalds
ec296ebf6d Miscellaneous IRQ fixes:
- Fix use-after-free in irq_work_single() on PREEMPT_RT
    (Jiayuan Chen)
 
  - Don't call add_interrupt_randomness() for NMIs
    in handle_percpu_devid_irq() (Mark Rutland)
 
  - Remove unused function in the ath79-cpu irqchip driver
    causing LKP CI build warnings (Rosen Penev)
 
  - Fix IRQ allocation/teardown leakage regressions in the GICv5
    irqchip driver (Sascha Bischoff)
 
  - Fix an IRQ trigger type regression in the Meson S4 SoC irqchip
    driver (Xianwei Zhao)
 
  - Fix CPU offlining regression in the RiscV IMSIC irqchip driver
    (Yong-Xuan Wang)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'irq-urgent-2026-05-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull IRQ fixes from Ingo Molnar:

 - Fix use-after-free in irq_work_single() on PREEMPT_RT (Jiayuan Chen)

 - Don't call add_interrupt_randomness() for NMIs in
   handle_percpu_devid_irq() (Mark Rutland)

 - Remove unused function in the ath79-cpu irqchip driver causing LKP
   CI build warnings (Rosen Penev)

 - Fix IRQ allocation/teardown leakage regressions in the GICv5 irqchip
   driver (Sascha Bischoff)

 - Fix an IRQ trigger type regression in the Meson S4 SoC irqchip driver
   (Xianwei Zhao)

 - Fix CPU offlining regression in the RiscV IMSIC irqchip driver
   (Yong-Xuan Wang)

* tag 'irq-urgent-2026-05-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irq_work: Fix use-after-free in irq_work_single() on PREEMPT_RT
  irqchip/riscv-imsic: Clear interrupt move state during CPU offlining
  irqchip/meson-gpio: Use the correct register in meson_s4_gpio_irq_set_type()
  irqchip/ath79-cpu: Remove unused function
  genirq/chip: Don't call add_interrupt_randomness() for NMIs
  irqchip/gic-v5: Allocate ITS parent LPIs as a range
  irqchip/gic-v5: Support range allocation for LPIs
  irqchip/gic-v5: Move LPI allocation into the LPI domain
2026-05-17 10:34:15 -07:00
Linus Torvalds
f7c79949be RISC-V updates for v7.1-rc4
- Disable satp register probing when no5lvl is specified on the kernel
   command line
 
 - Fix a CFI-related issue with the misaligned access speed measurement
   code
 
 - Reduce the CFI shadow stack size limit from 4GB to 2GB (following
   ARM64 GCS)
 
 - Prevent the kernel from requesting delegation of misaligned access
   faults unless a new Kconfig option,
   CONFIG_RISCV_SBI_FWFT_DELEGATE_MISALIGNED, is enabled.  This will
   depend on CONFIG_NONPORTABLE until the deficiencies of the kernel
   misaligned access fixup code are fixed
 
 - Fix some potential uninitialized memory accesses in error paths in
   compat_riscv_gpr_set() and compat_restore_sigcontext()
 
 - Fix a bug in the RISC-V MIPS vendor errata patching code where a
   logical-and was used in place of a bitwise-and
 
 - Drop some unnecessary code in riscv_fill_hwcap_from_isa_string()
 
 - Use macros for isa2hwcap indices in riscv_fill_hwcap(), rather than
   open-coding them
 
 - Fix some documentation typos (one affecting "make htmldocs")
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Merge tag 'riscv-for-linus-7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V fixes from Paul Walmsley:
 "Relatively low-impact fixes. Probably the most notable one is that we
  no longer ask the monitor-mode firmware to delegate misaligned access
  handling to the kernel by default, since the kernel code needs
  significant improvement to match the functionality of the firmware.
  This change avoids functional problems at some cost in performance,
  but shouldn't affect any system with misaligned access handling in
  hardware.

   - Disable satp register probing when no5lvl is specified on the
     kernel command line

   - Fix a CFI-related issue with the misaligned access speed
     measurement code

   - Reduce the CFI shadow stack size limit from 4GB to 2GB (following
     ARM64 GCS)

   - Prevent the kernel from requesting delegation of misaligned access
     faults unless a new Kconfig option, RISCV_SBI_FWFT_DELEGATE_MISALIGNED,
     is enabled. This will depend on CONFIG_NONPORTABLE until the
     deficiencies of the kernel misaligned access fixup code are fixed

   - Fix some potential uninitialized memory accesses in error paths in
     compat_riscv_gpr_set() and compat_restore_sigcontext()

   - Fix a bug in the RISC-V MIPS vendor errata patching code where a
     logical-and was used in place of a bitwise-and

   - Drop some unnecessary code in riscv_fill_hwcap_from_isa_string()

   - Use macros for isa2hwcap indices in riscv_fill_hwcap(), rather than
     open-coding them

   - Fix some documentation typos (one affecting 'make htmldocs')"

* tag 'riscv-for-linus-7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: misaligned: Make enabling delegation depend on NONPORTABLE
  riscv: Docs: fix unmatched quote warning
  riscv: cfi: reduce shadow stack size limit from 4GB to 2GB
  riscv: cpufeature: Use pre-defined ISA ext macros to index isa2hwcap
  riscv: mm: Fixup no5lvl failure when vaddr is invalid
  riscv: Fix register corruption from uninitialized cregs on error
  riscv: errata: Fix bitwise vs logical AND in MIPS errata patching
  Documentation: riscv: cmodx: fix typos
  riscv: cpufeature: Drop this_hwcap clear in T-Head vector workaround
  riscv: Define __riscv_copy_{,vec_}{words,bytes}_unaligned() using SYM_TYPED_FUNC_START
2026-05-17 09:33:49 -07:00
Linus Torvalds
1405a07192 hwmon fixes for v7.1-rc4
- asus_atk0110, acpi_power_meter: Add missing NULL pointer checks
 
 - lm90: Fix locking and UAF issues
 
 - sy7636a: Fix sysfs attribute name in documentation
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Merge tag 'hwmon-for-v7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:

 - asus_atk0110, acpi_power_meter: Add missing NULL pointer checks

 - lm90: Fix locking and UAF issues

 - sy7636a: Fix sysfs attribute name in documentation

* tag 'hwmon-for-v7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (lm90) Add lock protection to lm90_alert
  hwmon: (lm90) Stop work before releasing hwmon device
  docs: hwmon: sy7636a: fix temperature sysfs attribute name
  hwmon: (asus_atk0110) Check ACPI_COMPANION() against NULL
  hwmon: (acpi_power_meter) Check ACPI_COMPANION() against NULL
2026-05-17 09:23:28 -07:00
Vincent Donnefort
55a0005518 tracing: Fix desc in error path for the trace remote test module
During initialisation in remote_test_load(), if one of the
simple_ring_buffer fails to initialise, the error path attempts to
rollback initialised buffers. However, the rollback incorrectly uses the
global pointer to the trace descriptor, which is only set upon
successful load completion. Fix the error path by using the local
pointer to the descriptor.

Link: https://patch.msgid.link/20260515201616.337469-1-vdonnefort@google.com
Fixes: ea908a2b79 ("tracing: Add a trace remote module for testing")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Signed-off-by: Vincent Donnefort <vdonnefort@google.com>

base-commit: 5d6919055d
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2026-05-16 16:11:04 -04:00
Linus Torvalds
fe6f8e913d powerpc fixes for 7.1 #3
- fix preempt count leak in sysfs show paths
 
  - Fix error handling in pika_dtm_thread
 
  - Remove pmac_low_i2c_{lock,unlock}()
 
  - Enable all windfarms by default
 
  - fix dead default for GUEST_STATE_BUFFER_TEST
 
  - Remove redundant preempt_disable|enable() calls from arch_irq_work_raise()
 
 Thanks to:
 Aboorva Devarajan, Ally Heev, Amit Machhiwal, Bart Van Assche, Christophe
 Leroy, Christophe Leroy (CS GROUP), Dan Carpenter, Gautam Menghani, Harsh
 Prateek Bora, Julian Braha, Krzysztof Kozlowski, Linus Walleij, Ma Ke, Ritesh
 Harjani (IBM), Sayali Patil
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Merge tag 'powerpc-7.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Madhavan Srinivasan:

 - Fix preempt count leak in sysfs show paths

 - Fix error handling in pika_dtm_thread

 - Remove pmac_low_i2c_{lock,unlock}()

 - Enable all windfarms by default

 - Fix dead default for GUEST_STATE_BUFFER_TEST

 - Remove redundant preempt_disable|enable() calls from
   arch_irq_work_raise()

Thanks to Aboorva Devarajan, Ally Heev, Amit Machhiwal, Bart Van Assche,
Christophe Leroy, Christophe Leroy (CS GROUP), Dan Carpenter, Gautam
Menghani, Harsh Prateek Bora, Julian Braha, Krzysztof Kozlowski, Linus
Walleij, Ma Ke, Ritesh Harjani (IBM), and Sayali Patil

* tag 'powerpc-7.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/time: Remove redundant preempt_disable|enable() calls from arch_irq_work_raise()
  powerpc/hv-gpci: fix preempt count leak in sysfs show paths
  powerpc: fix dead default for GUEST_STATE_BUFFER_TEST
  powerpc/powermac: Remove pmac_low_i2c_{lock,unlock}()
  powerpc/warp: Fix error handling in pika_dtm_thread
  powerpc: 82xx: fix uninitialized pointers with free attribute
  powerpc/g5: Enable all windfarms by default
2026-05-16 09:53:14 -07:00
Linus Torvalds
b6a08b017f sound fixes for 7.1-rc4
A collection of small fixes.  All device-specific small changes.
 
 * HD-audio:
   - Fix NULL pointer dereference in snd_hda_ctl_add()
   - ACPI and Kconfig fixes for Cirrus drivers
   - A regression fix CA0132 codec
   - Various device-specific quirks for HP, Lenovo, Samsung, Framework,
     etc
   - Documentation path fix
 * USB-audio:
   - Boundary checks for MIDI endpoint descriptors
   - Offload mapping error handling for Qualcomm
   - A new device quirk for TTGK Technology USB-C Audio
   - A fix for Focusrite Scarlett2 mixer
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Merge tag 'sound-7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A collection of small fixes.  All device-specific small changes:

  HD-audio:
   - Fix NULL pointer dereference in snd_hda_ctl_add()
   - ACPI and Kconfig fixes for Cirrus drivers
   - A regression fix CA0132 codec
   - Various device-specific quirks for HP, Lenovo, Samsung, Framework etc
   - Documentation path fix

  USB-audio:
   - Boundary checks for MIDI endpoint descriptors
   - Offload mapping error handling for Qualcomm
   - A new device quirk for TTGK Technology USB-C Audio
   - A fix for Focusrite Scarlett2 mixer"

* tag 'sound-7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda/ca0132: Disable auto-detect on manual output select
  ALSA: hda/realtek: Add mute LED quirk for HP Pavilion Laptop 16-ag0xxx
  ALSA: hda/realtek: ALC269 fixup for Lenovo Yoga Pro 7 15ASH111 audio
  ALSA: hda: Fix NULL pointer dereference in snd_hda_ctl_add()
  ALSA: hda/realtek: Add quirk for Samsung Galaxy Book5 360 headphone
  ALSA: hda/cs35l56: Drop malformed default N from Kconfig
  ALSA: hda/realtek: fix mic boost on Framework PTL
  ALSA: hda/realtek: Limit mic boost on Positivo DN50E
  ALSA: doc: cs35l56: Update path to HDA driver source
  ALSA: usb-audio: qcom: Check offload mapping failures
  ALSA: hda/realtek: Fix Legion 7 16ITHG6 speaker amp binding
  ALSA: usb-audio: Add iface reset and delay quirk for TTGK Technology USB-C Audio
  ALSA: scarlett2: Add missing error check when initialise Autogain Status
  ALSA: hda: cs35l41: Put ACPI device on missing physical node
  ALSA: hda: cs35l56: Put ACPI device after setting companion
  ALSA: usb-audio: Bound MIDI 2.0 endpoint descriptor scans
  ALSA: usb-audio: Bound MIDI endpoint descriptor scans
  ALSA: hda/realtek: Add codec SSID quirk for Lenovo Yoga Pro 9 16IMH9 (17aa:38d5)
2026-05-16 09:32:30 -07:00
Guenter Roeck
873e919e31 hwmon: (lm90) Add lock protection to lm90_alert
Sashiko reports:

lm90_alert() executes in the smbus alert context and calls
lm90_update_confreg() to disable the hardware alert line, without
acquiring hwmon_lock.

Concurrently, sysfs write operations (such as lm90_write_convrate) hold
the hwmon_lock, temporarily modify data->config, and then restore it.

If an alert interrupt occurs concurrently with a sysfs write, the sysfs
path will overwrite the alert handler's modifications to data->config
and the hardware register.

This unintentionally re-enables the hardware alert line while the alarm is
still active, causing an interrupt storm.

Add the missing lock to lm90_alert() to solve the problem.

Fixes: 7a1d220ccb ("hwmon: (lm90) Introduce function to update configuration register")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-16 08:10:33 -07:00
Guenter Roeck
b09a456010 hwmon: (lm90) Stop work before releasing hwmon device
Sashiko reports:

In lm90_probe(), the devm action to cancel the alert_work and report_work
(lm90_restore_conf) is registered in lm90_init_client() before
devm_hwmon_device_register_with_info() is called.

Because devm executes cleanup actions in reverse order during module
unbind or probe failure, the hwmon device is unregistered and freed first.

If lm90_alert_work() or lm90_report_alarms() runs in the window between
the hwmon device being freed and the delayed works being cancelled,
lm90_update_alarms() will dereference the freed data->hwmon_dev here.

Fix the problem by canceling the workers separately after registering
the hwmon device and before registering the interrupt handler. This ensures
that the workers are canceled after interrupts are disabled and before
the hwmon device is released. Add "shutdown" flag to indicate that device
shutdown is in progress to prevent workers from being re-armed.

Fixes: f6d0775119 ("hwmon: (lm90) Rework alarm/status handling")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-16 08:09:55 -07:00
Linus Torvalds
6916d5703d drm fixes for 7.1-rc4
core:
 - fix for the fix for the handle change race.
 
 ttm:
 - avoid infinite loop in swap out
 - avoid infinite loop in BO shrinking
 - convert -EAGAIN from dmem_cgroup_try_charge to -ENOSPC
 
 bridge:
 - imx8qxp-pxl2dpi: avoid ERR_PTR with device_node cleanup
 
 i915:
 - Skip __i915_request_skip() for already signaled requests
 - Fix VSC dynamic range signaling for RGB formats [dp]
 
 xe:
 - Madvise fix around purgeability tracking
 - Restore engine mask for specific blitter style
 - Couple UAF fixes
 - Drop unused ggtt_balloon field
 
 amdgpu:
 - Userq fixes
 - DCN 3.2 fix
 - RAS fix
 - GC 12 fix
 
 gma500:
 - oaktrail_lvds: fix i2c handling
 
 loongson:
 - use managed cleanup for connector polling
 
 panfrost:
 - handle results from reservation locking correctly
 
 qaic:
 - check for integer overflows in mmap logic
 
 rocket:
 - handle results from reservation locking correctly
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Merge tag 'drm-fixes-2026-05-16' of https://gitlab.freedesktop.org/drm/kernel

Pull drm fixes from Dave Airlie:
 "Weekly fixes pull, small and all over fixes, mostly xe and amdgpu,
  with some ttm and a core fix for the handle change pain.

  core:
   - fix for the fix for the handle change race

  ttm:
   - avoid infinite loop in swap out
   - avoid infinite loop in BO shrinking
   - convert -EAGAIN from dmem_cgroup_try_charge to -ENOSPC

  bridge:
   - imx8qxp-pxl2dpi: avoid ERR_PTR with device_node cleanup

  i915:
   - Skip __i915_request_skip() for already signaled requests
   - Fix VSC dynamic range signaling for RGB formats [dp]

  xe:
   - Madvise fix around purgeability tracking
   - Restore engine mask for specific blitter style
   - Couple UAF fixes
   - Drop unused ggtt_balloon field

  amdgpu:
   - Userq fixes
   - DCN 3.2 fix
   - RAS fix
   - GC 12 fix

  gma500:
   - oaktrail_lvds: fix i2c handling

  loongson:
   - use managed cleanup for connector polling

  panfrost:
   - handle results from reservation locking correctly

  qaic:
   - check for integer overflows in mmap logic

  rocket:
   - handle results from reservation locking correctly"

* tag 'drm-fixes-2026-05-16' of https://gitlab.freedesktop.org/drm/kernel: (26 commits)
  drm: Replace old pointer to new idr
  drm/loongson: Use managed KMS polling
  drm/ttm: Fix ttm_bo_shrink() infinite LRU walk on backup failure
  drm/ttm: Convert -EAGAIN from dmem_cgroup_try_charge to -ENOSPC
  drm/gma500/oaktrail_lvds: fix i2c adapter leaks on init
  drm/gma500/oaktrail_lvds: fix hang on init failure
  drm/gma500/oaktrail_hdmi: fix i2c adapter leak on setup
  drm/xe: Drop unused ggtt_balloon field
  accel/qaic: Add overflow check to remap_pfn_range during mmap
  drm/i915/dp: Fix VSC dynamic range signaling for RGB formats
  drm/i915: skip __i915_request_skip() for already signaled requests
  drm/bridge: imx8qxp-pxl2dpi: avoid ERR_PTR with device_node cleanup
  drm/amdgpu/gfx_v12_0: set gfx.rs64_enable from PFP header on GFX12
  drm/amd/ras: Fix CPER ring debugfs read overflow
  drm/amd/display: Wrap DCN32 phantom-plane allocation in DC_RUN_WITH_PREEMPTION_ENABLED
  drm/amdgpu: fix userq hang detection and reset
  drm/amdgpu: remove almost all calls to amdgpu_userq_detect_and_reset_queues
  drm/amdgpu: rework amdgpu_userq_signal_ioctl v3
  drm/amdgpu: remove deadlocks from amdgpu_userq_pre_reset
  drm/xe/dma-buf: fix UAF with retry loop
  ...
2026-05-15 17:00:45 -07:00
Edward Adam Davis
dc366607c4 drm: Replace old pointer to new idr
Commit 5e28b7b944 introduced a logical error by failing to replace the
newly generated IDR pointer to old id's pointer at the correct location
within the "change handle" logic; this resulted in the issue reported by
syzbot [1].

Specifically, the new IDR object pointer is intended to replace the original
id's pointer during the normal execution flow.

Additionally, an unnecessary conditional check for the ret exit path has
been removed.

[1]
!RB_EMPTY_ROOT(&prime_fpriv->dmabufs)
WARNING: drivers/gpu/drm/drm_prime.c:224 at drm_prime_destroy_file_private+0x48/0x60 drivers/gpu/drm/drm_prime.c:224, CPU#0: syz.0.17/5833
Call Trace:
 drm_file_free.part.0+0x7e6/0xcc0 drivers/gpu/drm/drm_file.c:269
 drm_file_free drivers/gpu/drm/drm_file.c:237 [inline]
 drm_close_helper.isra.0+0x186/0x200 drivers/gpu/drm/drm_file.c:290
 drm_release+0x1ab/0x360 drivers/gpu/drm/drm_file.c:438

Fixes: 5e28b7b944 ("drm: Set old handle to NULL before prime swap in change_handle")
Reported-by: syzbot+d7c9eed171647e421013@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=d7c9eed171647e421013
Cc: stable@vger.kernel.org
Tested-by: syzbot+d7c9eed171647e421013@syzkaller.appspotmail.com
Signed-off-by: Edward Adam Davis <eadavis@qq.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patch.msgid.link/tencent_C267296443AAA4567771176886DFF364A305@qq.com
2026-05-16 09:32:43 +10:00
Linus Torvalds
36343a8ff3 arm64 MPAM fixes:
- Fix NULL dereference and a false-positive warning when the driver
    probes hardware with surprising version numbers
 
  - Fix writing values to the wrong registers when probing
    cache-utilisation counters. Replace 'NRDY' probing with a version
    that is robust for platforms where the bit is writeable by both
    hardware and software
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 MPAM fixes from Catalin Marinas:

 - Fix NULL dereference and a false-positive warning when the driver
   probes hardware with surprising version numbers

 - Fix writing values to the wrong registers when probing
   cache-utilisation counters. Replace 'NRDY' probing with a version
   that is robust for platforms where the bit is writeable by both
   hardware and software

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm_mpam: Check whether the config array is allocated before destroying it
  arm_mpam: Fix false positive assert failure during mpam_disable()
  arm_mpam: Improve check for whether or not NRDY is hardware managed
  arm_mpam: Pretend that NRDY is always hardware managed
  arm_mpam: Fix monitor instance selection when checking for hardware NRDY
2026-05-15 15:40:25 -07:00
Linus Torvalds
30e0ff6d6a IOMMU Fixes for Linux v7.1-rc3:
Including:
 
 	- AMD-Vi:
 	  - Add bounds checks to debugfs and table lookups
 
 	- Intel VT-d:
 	  - Apply an existing quirk for Q35 graphic device.
 	  - Skip dev_pasid teardown for the blocked domain to avoid out-of-bounds
 	    access.
 	  - Return early if dev_pasid is missing to prevent NULL dereference or
 	    UAF.
 
 	- Core:
 	  - Fix bugs and corner cases in the pci_dev_reset_iommu_prepare/done()
 	    code. This are some bigger changes including some re-work,
 	    hopefully okay for -rc.
 	  - Fix various issues found by AI in iommupt code.
 
 	- MAINTAINERS email address update for RISCV IOMMU.
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Merge tag 'iommu-fixes-v7.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux

Pull iommu fixes from Joerg Roedel:
 "This is probably the largest fixes pull-request ever sent for IOMMU. I
  partially blame it on AI code review which found some issues but there
  is also some rework in here to fix issues in the iommu parts of PCI
  device reset.

  AMD-Vi:
   - Add bounds checks to debugfs and table lookups

  Intel VT-d:
   - Apply an existing quirk for Q35 graphic device
   - Skip dev_pasid teardown for the blocked domain to avoid
     out-of-bounds access
   - Return early if dev_pasid is missing to prevent NULL dereference
     or UAF

  Core:
   - Fix bugs and corner cases in pci_dev_reset_iommu_prepare/done()
   - Fix various issues found by AI in iommupt code

  MAINTAINERS email address update for RISCV IOMMU"

* tag 'iommu-fixes-v7.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux:
  MAINTAINERS: update Tomasz Jeznach's email address
  iommupt: Fix the end_index calculation in __map_range_leaf()
  iommupt: Check for missing PAGE_SIZE in the pgsize_bitmap
  iommu: Handle unmap error when iommu_debug is enabled
  iommu: Fix up map/unmap debugging for iommupt domains
  iommu: Fix loss of errno on map failure for classic ops
  iommu/vt-d: Avoid NULL pointer dereference or refcount corruption
  iommu/vt-d: Fix oops due to out of scope access
  iommu/vt-d: Disable DMAR for Intel Q35 IGFX
  iommu: Warn on premature unblock during DMA aliased sibling reset
  iommu: Fix WARN_ON in __iommu_group_set_domain_nofail() due to reset
  iommu: Fix ATS invalidation timeouts during __iommu_remove_group_pasid()
  iommu: Fix nested pci_dev_reset_iommu_prepare/done()
  iommu: Fix pasid attach in pci_dev_reset_iommu_prepare/done()
  iommu: Replace per-group resetting_domain with per-gdev blocked flag
  iommu: Fix kdocs of pci_dev_reset_iommu_done()
  iommu: Fix NULL group->domain dereference in pci_dev_reset_iommu_done()
  iommu/amd: Bounds-check devid in __rlookup_amd_iommu()
  iommu/amd: Remove latent out-of-bounds access in IOMMU debugfs
2026-05-15 15:22:26 -07:00
Linus Torvalds
3bf83e47b4 VFIO fixes for v7.1-rc4
- Convert vfio-pci BAR resource requests and iomaps initialization
    from a lazy, on-demand model to an eager pre-allocation model to
    avoid races while preserving legacy error behavior.  Fix unchecked
    barmap access in dma-buf export path. (Matt Evans)
 
  - Introduce an implicit unsigned cast in converting vfio-pci device
    offsets to region indexes, closing a potential out-of-bounds
    access through the vfio_pci_ioeventfd() interface. (Matt Evans)
 
  - Fix a dma-buf kref underflow and stuck wait_for_completion() when
    closing a previously revoked dma-buf. (Alex Williamson)
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Merge tag 'vfio-v7.1-rc4' of https://github.com/awilliam/linux-vfio

Pull VFIO fixes from Alex Williamson:

 - Convert vfio-pci BAR resource requests and iomaps initialization
   from a lazy, on-demand model to an eager pre-allocation model to
   avoid races while preserving legacy error behavior.  Fix unchecked
   barmap access in dma-buf export path (Matt Evans)

 - Introduce an implicit unsigned cast in converting vfio-pci device
   offsets to region indexes, closing a potential out-of-bounds
   access through the vfio_pci_ioeventfd() interface (Matt Evans)

 - Fix a dma-buf kref underflow and stuck wait_for_completion() when
   closing a previously revoked dma-buf (Alex Williamson)

* tag 'vfio-v7.1-rc4' of https://github.com/awilliam/linux-vfio:
  vfio/pci: Check BAR resources before exporting a DMABUF
  vfio/pci: Set up BAR resources and maps in vfio_pci_core_enable()
  vfio/pci: Make VFIO_PCI_OFFSET_TO_INDEX() return unsigned
  vfio/pci: fix dma-buf kref underflow after revoke
2026-05-15 15:13:02 -07:00
Dave Airlie
396db75a1f Short summary of fixes pull:
bridge:
 - imx8qxp-pxl2dpi: avoid ERR_PTR with device_node cleanup
 
 gma500:
 - oaktrail_lvds: fix i2c handling
 
 loongson:
 - use managed cleanup for connector polling
 
 panfrost:
 - handle results from reservation locking correctly
 
 qaic:
 - check for integer overflows in mmap logic
 
 rocket:
 - handle results from reservation locking correctly
 
 ttm:
 - avoid infinite loop in swap out
 - avoid infinite loop in BO shrinking
 - convert -EAGAIN from dmem_cgroup_try_charge to -ENOSPC
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Merge tag 'drm-misc-fixes-2026-05-15' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

Short summary of fixes pull:

bridge:
- imx8qxp-pxl2dpi: avoid ERR_PTR with device_node cleanup

gma500:
- oaktrail_lvds: fix i2c handling

loongson:
- use managed cleanup for connector polling

panfrost:
- handle results from reservation locking correctly

qaic:
- check for integer overflows in mmap logic

rocket:
- handle results from reservation locking correctly

ttm:
- avoid infinite loop in swap out
- avoid infinite loop in BO shrinking
- convert -EAGAIN from dmem_cgroup_try_charge to -ENOSPC

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20260515070816.GA88575@2a02-2455-9062-2500-7dec-552d-233d-9fe0.dyn6.pyur.net
2026-05-16 07:56:32 +10:00
Linus Torvalds
b0662be913 five client fixes
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Merge tag 'v7.1-rc4-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:

 - Fix integer overflow in read

 - Fix smbdirect error cleanup

 - Multichannel reconnect fix

 - Add some missing defines and correct some references to protocol spec

 - Fix oob symlink read

* tag 'v7.1-rc4-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  smbdirect: Fix error cleanup in smbdirect_map_sges_from_iter()
  smb: client: avoid integer overflow in SMB2 READ length check
  cifs: client: stage smb3_reconfigure() updates and restore ctx on failure
  smb/client: fix possible infinite loop and oob read in symlink_data()
  SMB3.1.1: add missing QUERY_DIR info levels
2026-05-15 14:52:17 -07:00
Linus Torvalds
fcbf68d32f An important patch from Hristo that squashes a folio reference leak
that could lead to OOM kills in CephFS and a number of miscellaneous
 fixes from Raphael and Slava.  All but two are marked for stable.
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Merge tag 'ceph-for-7.1-rc4' of https://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "An important patch from Hristo that squashes a folio reference leak
  that could lead to OOM kills in CephFS and a number of miscellaneous
  fixes from Raphael and Slava.

  All but two are marked for stable"

* tag 'ceph-for-7.1-rc4' of https://github.com/ceph/ceph-client:
  libceph: Fix potential null-ptr-deref in decode_choose_args()
  libceph: handle rbtree insertion error in decode_choose_args()
  libceph: Fix potential out-of-bounds access in osdmap_decode()
  ceph: put folios not suitable for writeback
  ceph: add ceph_has_realms_with_quotas() check to ceph_quota_update_statfs()
  libceph: Fix potential out-of-bounds access in __ceph_x_decrypt()
  ceph: fix BUG_ON in __ceph_build_xattrs_blob() due to stale blob size
  ceph: fix a buffer leak in __ceph_setxattr()
  libceph: Fix unnecessarily high ceph_decode_need() for uniform bucket
  libceph: Fix potential out-of-bounds access in crush_decode()
2026-05-15 14:48:09 -07:00
Dave Airlie
96f34d185c - Madvise fix around purgeability tracking (Arvind)
- Restore engine mask for specific blitter style (Roper)
 - Couple UAF fixes (Auld)
 - Drop unused ggtt_balloon field (Wajdeczko)
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Merge tag 'drm-xe-fixes-2026-05-14' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes

- Madvise fix around purgeability tracking (Arvind)
- Restore engine mask for specific blitter style (Roper)
- Couple UAF fixes (Auld)
- Drop unused ggtt_balloon field (Wajdeczko)

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patch.msgid.link/agXWkM3Y98bqt6TG@intel.com
2026-05-16 07:48:08 +10:00
Linus Torvalds
a8b0b72255 for-7.1-rc3-tag
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Merge tag 'for-7.1-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:

 - fixup warning when allocating memory for readahead, __GFP_NOWARN was
   accidentally dropped when setting mapping constraints

 - in tracepoint of file sync, fix sleeping in atomic context when
   handling dentries

 - harden initial loading of block group on crafted/fuzzed images,
   iterate all chunk mapping entries unconditionally

 - fix freeing pages of submitted io after checking for errors

 - fix incorrect inode size after remount when using fallocate KEEP_SIZE
   mode (also requires disabled 'no-holes' feature)

* tag 'for-7.1-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: fix incorrect i_size after remount caused by KEEP_SIZE prealloc gap
  btrfs: only release the dirty pages io tree after successful writes
  btrfs: tracepoints: fix sleep while in atomic context in btrfs_sync_file()
  btrfs: always pass __GFP_NOWARN from add_ra_bio_pages()
  btrfs: fix check_chunk_block_group_mappings() to iterate all chunk maps
2026-05-15 13:22:07 -07:00
Linus Torvalds
663ea69540 xfs: fixes for v7.1-rc4
Signed-off-by: Carlos Maiolino <cem@kernel.org>
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Merge tag 'xfs-fixes-7.1-rc4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs fixes from Carlos Maiolino:
 "A few bug fixes, nothing really special stands out"

* tag 'xfs-fixes-7.1-rc4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: Fix typo in comment
  xfs: fix the "limiting open zones" message
  xfs: flush delalloc blocks on ENOSPC in xfs_trans_alloc_icreate
  xfs: check da node block pad field during scrub
  xfs: fix memory leak for data allocated by xfs_zone_gc_data_alloc()
  xfs: fix memory leak on error in xfs_alloc_zone_info()
  xfs: check directory data block header padding in scrub
  xfs: zero directory data block padding on write verification
  xfs: zero entire directory data block header region at init
  xfs: remove the meaningless XFS_ALLOC_FLAG_FREEING
2026-05-15 13:17:46 -07:00
Linus Torvalds
56ec2b646d nfsd-7.1 fixes:
Issues reported with v7.1-rc:
 - Correctness fix for the new sunrpc cache netlink protocol
 
 Issues that need expedient stable backports:
 - Correctness fixes for delegated attributes
 - Prevent an infinite loop when revoking layouts
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Merge tag 'nfsd-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd fixes from Chuck Lever:
 "Fixes for this release:
   - Correctness fix for the new sunrpc cache netlink protocol

  Marked for stable:
   - Correctness fixes for delegated attributes
   - Prevent an infinite loop when revoking layouts"

* tag 'nfsd-7.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  NFSD: Fix infinite loop in layout state revocation
  sunrpc: start cache request seqno at 1 to fix netlink GET_REQS
  nfsd: update mtime/ctime on COPY in presence of delegated attributes
  nfsd: update mtime/ctime on CLONE in presense of delegated attributes
  nfsd: fix file change detection in CB_GETATTR
  nfsd: fix GET_DIR_DELEGATION when VFS leases are disabled
2026-05-15 13:11:41 -07:00
Linus Torvalds
d458a24034 block-7.1-20260515
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Merge tag 'block-7.1-20260515' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

Pull block fixes from Jens Axboe:

 - NVMe merge request via Keith:
     - Fix memory leak on a passthrough integrity mapping failure (Keith)
     - Hide secrets behind debug option (Hannes)
     - Fix pci use-after-free for host memory buffer (Chia-Lin Kao)
     - Fix tcp taregt use-after-free for data digest (Sagi)
     - Revert a mistaken quirk (Alan Cui)
     - Fix uevent and controller state race condition (Maurizio)
     - Fix apple submission queue re-initialization (Nick Chan)

 - Three fixes for blk-integrity, fixing an issue with the user data
   mapping and two problems with recomputing number of segments

 - Two fixes for the iov_iter bounce buffering

 - Fix for the handling of dead zoned write plugs

 - ublk max_sectors validation fix, with associated selftest addition

* tag 'block-7.1-20260515' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  nvme-apple: Reset q->sq_tail during queue init
  block: align down bounces bios
  block: pass a minsize argument to bio_iov_iter_bounce
  selftests: ublk: cap nthreads to kernel's actual nr_hw_queues
  block: fix handling of dead zone write plugs
  block: bio-integrity: Fix null-ptr-deref in bio_integrity_map_user()
  block: recompute nr_integrity_segments in blk_insert_cloned_request
  block: don't overwrite bip_vcnt in bio_integrity_copy_user()
  nvme: fix race condition between connected uevent and STARTED_ONCE flag
  Revert "nvme: add quirk NVME_QUIRK_IGNORE_DEV_SUBNQN for 144d:a808"
  nvmet-tcp: Fix potential UAF when ddgst mismatch
  nvme-pci: fix use-after-free in nvme_free_host_mem()
  nvmet-auth: Do not print DH-HMAC-CHAP secrets
  nvme: fix bio leak on mapping failure
  nvme: make prp passthrough usage less scary
  ublk: reject max_sectors smaller than PAGE_SECTORS in parameter validation
2026-05-15 12:47:00 -07:00
Linus Torvalds
ee7226b2ae io_uring-7.1-20260515
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Merge tag 'io_uring-7.1-20260515' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

Pull io_uring fixes from Jens Axboe:

 - Small series sanitizing the locking done for either modifying or
   reading a chain of requests

 - If the application has a pid namespace, ensure that the sqthread pid
   is correctly printed in fdinfo

 - Fix for a hashing issue in the io-wq thread pool, which could lead to
   a use-after-free

 - Kill dead argument from io_prep_rw_pi()

 - Fix for a missed validation of the CQ ring head, affecting CQE refill

* tag 'io_uring-7.1-20260515' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  io_uring: validate user-controlled cq.head in io_cqe_cache_refill()
  io-wq: check that the predecessor is hashed in io_wq_remove_pending()
  io_uring/rw: drop unused attr_type_mask from io_prep_rw_pi()
  io_uring: hold uring_lock across io_kill_timeouts() in cancel path
  io_uring: defer linked-timeout chain splice out of hrtimer context
  io_uring: hold uring_lock when walking link chain in io_wq_free_work()
  io_uring/fdinfo: translate SqThread PID through caller's pid_ns
2026-05-15 12:34:02 -07:00
Linus Torvalds
78e8370033 hardening fix for v7.1-rc4
- gcc-plugins: Fix GCC 16 removal of CONST_CAST macros
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Merge tag 'hardening-v7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening fix from Kees Cook:

 - gcc-plugins: Fix GCC 16 removal of CONST_CAST macros

* tag 'hardening-v7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  gcc-plugins: Always define CONST_CAST_GIMPLE and CONST_CAST_TREE
2026-05-15 12:27:03 -07:00
Linus Torvalds
36d49bba19 This is Willy Tarreau's new document clarifying the definition and handling
of security-related bugs, which we're trying to get out there quickly on
 the theory that some of the bug reporters might actually read and pay
 attention to it.
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Merge tag 'docs-7.1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux

Pull documentation fixes from Jonathan Corbet:
 "This is Willy Tarreau's new document clarifying the definition and
  handling of security-related bugs, which we're trying to get out there
  quickly on the theory that some of the bug reporters might actually
  read and pay attention to it"

* tag 'docs-7.1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux:
  docs: threat-model: don't limit root capabilities to CAP_SYS_ADMIN
  docs: security-bugs: add a link to the threat-model documentation
  Documentation: security-bugs: clarify requirements for AI-assisted reports
  Documentation: security-bugs: explain what is and is not a security bug
  Documentation: security-bugs: do not systematically Cc the security team
2026-05-15 12:24:09 -07:00
Arnd Bergmann
96350db80e ring-buffer remote: Avoid unexpected symbol warnings (arm, s390)
The now more verbose check found more architecture specific symbol
missing from the whitelist, during randconfig testing on s390
and 32-bit arm:

Unexpected symbols in kernel/trace/simple_ring_buffer.o:
         U __aeabi_unwind_cpp_pr1

Unexpected symbols in kernel/trace/simple_ring_buffer.o:
                 U __s390_indirect_jump_r1
                 U __s390_indirect_jump_r10
                 U __s390_indirect_jump_r14
                 U __s390_indirect_jump_r2
                 U __s390_indirect_jump_r5
                 U __s390_indirect_jump_r7
                 U __s390_indirect_jump_r8
                 U __s390_indirect_jump_r9
make[6]: *** [/home/arnd/arm-soc/kernel/trace/Makefile:160: kernel/trace/simple_ring_buffer.o.checked] Error 1

Add these to the list and keep it roughly sorted into sanitizer
and architecture symbols.

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Vincent Donnefort <vdonnefort@google.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Link: https://patch.msgid.link/20260515105717.1023007-1-arnd@kernel.org
Fixes: 1211907ac0 ("tracing: Generate undef symbols allowlist for simple_ring_buffer")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2026-05-15 14:59:30 -04:00