Commit Graph

1398306 Commits

Author SHA1 Message Date
Benjamin Tissoires
5f2e058df6 HID: bpf: add support for Huion Kamvas 13 (Gen 3) (model GS1333)
This assumes that the tablet has been switched into vendor mode (by
using huion-switcher[1], for example) and is sending events using
Huion's proprietary data format.

This has been tested using the PW600L pen, which does not have an
eraser.  There is no expectation that a pen with an eraser will work at
this time.

[1] https://github.com/whot/huion-switcher

Signed-off-by: Nicholas LaPointe <nicholaslapointe8@gmail.com>
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/162
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2025-11-20 16:45:58 +01:00
Benjamin Tissoires
501ea61e29 HID: bpf: Add support for the Inspiroy 2M
There are a differences in the report descriptor to the existing
Inspiroy 2S which makes having this as separate file a more efficient
approach than merging them together.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/merge_requests/167
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2025-11-20 16:45:58 +01:00
Linus Torvalds
0678f56304 Merge tag 'hid-for-linus-2025111901' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Pull HID fixes from Jiri Kosina:

 - memory leak fixes in hid-uclogic, hid-ntrig and hid-playstation
   drivers (Abdun Nihaal, Masami Ichikawa)

 - regression fix for playback handling in hid-pidff (Tomasz Pakuła)

 - initialization fix for some amd_sfh platforms (Mario Limonciello)

 - a few assorted device-specific ID additions and quirks

* tag 'hid-for-linus-2025111901' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
  HID: uclogic: Fix potential memory leak in error path
  HID: playstation: Fix memory leak in dualshock4_get_calibration_data()
  HID: pidff: Fix needs_playback check
  HID: corsair-void: Use %pe for printing PTR_ERR
  HID: elecom: Add support for ELECOM M-XT3URBK (018F)
  HID: hid-input: Extend Elan ignore battery quirk to USB
  HID: hid-ntrig: Prevent memory leak in ntrig_report_version()
  HID: amd_sfh: Stop sensor before starting
  HID: apple: Add SONiX AK870 PRO to non_apple_keyboards quirk list
  HID: lenovo: fixup Lenovo Yoga Slim 7x Keyboard rdesc
  HID: quirks: work around VID/PID conflict for 0x4c4a/0x4155
2025-11-19 08:54:58 -08:00
Linus Torvalds
2df79e4d72 Merge tag 'fixes-2025-11-19' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock
Pull memblock fix from Mike Rapoport:
 "Fix memblock_estimated_nr_free_pages() for soft-reserved memory

  The "soft-reserved" memory regions (EFI_MEMORY_SP) are added to the
  memblock.reserved, but not to the memblock.memory. It causes
  memblock_estimated_nr_free_pages() to return a value smaller value
  than expected, or if it underflows, an extremely large value.

  Calculate the number of estimated free pages using
  memblock_reserved_kern_size() instead of memblock_reserved_size() to
  fix the issue"

* tag 'fixes-2025-11-19' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
  memblock: fix memblock_estimated_nr_free_pages() for soft-reserved memory
2025-11-19 08:27:05 -08:00
Linus Torvalds
8b690556d8 Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
 "Arm:

   - Only adjust the ID registers when no irqchip has been created once
     per VM run, instead of doing it once per vcpu, as this otherwise
     triggers a pretty bad conbsistency check failure in the sysreg code

   - Make sure the per-vcpu Fine Grain Traps are computed before we load
     the system registers on the HW, as we otherwise start running
     without anything set until the first preemption of the vcpu

  x86:

   - Fix selftests failure on AMD, checking for an optimization that was
     not happening anymore"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: SVM: Fix redundant updates of LBR MSR intercepts
  KVM: arm64: VHE: Compute fgt traps before activating them
  KVM: arm64: Finalize ID registers only once per VM
2025-11-18 10:02:22 -08:00
Abdun Nihaal
a78eb69d60 HID: uclogic: Fix potential memory leak in error path
In uclogic_params_ugee_v2_init_event_hooks(), the memory allocated for
event_hook is not freed in the next error path. Fix that by freeing it.

Fixes: a251d6576d ("HID: uclogic: Handle wireless device reconnection")
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2025-11-18 18:08:20 +01:00
Abdun Nihaal
8513c154f8 HID: playstation: Fix memory leak in dualshock4_get_calibration_data()
The memory allocated for buf is not freed in the error paths when
ps_get_report() fails. Free buf before jumping to transfer_failed label

Fixes: 947992c7fa ("HID: playstation: DS4: Fix calibration workaround for clone devices")
Signed-off-by: Abdun Nihaal <nihaal@cse.iitm.ac.in>
Reviewed-by: Silvan Jegen <s.jegen@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2025-11-18 18:07:14 +01:00
Tomasz Pakuła
9d7b89a102 HID: pidff: Fix needs_playback check
A small bug made it's way here when rewriting code to Linux quality.
Currently, if an effect is not infinite and a program requests it's
playback with the same number of loops, the play command won't be fired
and if an effect is infinite, the spam will continue.

We want every playback update for non-infinite effects and only some
for infinite (detecting when a program requests stop with 0 which will
be different than previous value which is usually 1 or 255).

Signed-off-by: Tomasz Pakuła <tomasz.pakula.oficjalny@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2025-11-18 18:04:28 +01:00
Stuart Hayhurst
4e127a7478 HID: corsair-void: Use %pe for printing PTR_ERR
Use %pe to print a PTR_ERR to silence a cocci warning

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@inria.fr>
Closes: https://lore.kernel.org/r/202510300342.WtPn2jF3-lkp@intel.com/
Signed-off-by: Stuart Hayhurst <stuart.a.hayhurst@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2025-11-18 18:03:48 +01:00
Naoki Ueki
cdcbb8e8d1 HID: elecom: Add support for ELECOM M-XT3URBK (018F)
The ELECOM M-XT3URBK trackball has an additional device ID (0x018F), which
shares the same report descriptor as the existing device (0x00FB). However,
the driver does not currently recognize this new ID, resulting in only five
buttons being functional.

This patch adds the new device ID so that all six buttons work properly.

Signed-off-by: Naoki Ueki <naoki25519@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
2025-11-18 17:54:49 +01:00
Yosry Ahmed
3fa05f96fc KVM: SVM: Fix redundant updates of LBR MSR intercepts
Don't update the LBR MSR intercept bitmaps if they're already up-to-date,
as unconditionally updating the intercepts forces KVM to recalculate the
MSR bitmaps for vmcb02 on every nested VMRUN.  The redundant updates are
functionally okay; however, they neuter an optimization in Hyper-V
nested virtualization enlightenments and this manifests as a self-test
failure.

In particular, Hyper-V lets L1 mark "nested enlightenments" as clean, i.e.
tell KVM that no changes were made to the MSR bitmap since the last VMRUN.
The hyperv_svm_test KVM selftest intentionally changes the MSR bitmap
"without telling KVM about it" to verify that KVM honors the clean hint,
correctly fails because KVM notices the changed bitmap anyway:

  ==== Test Assertion Failure ====
  x86/hyperv_svm_test.c:120: vmcb->control.exit_code == 0x081
  pid=193558 tid=193558 errno=4 - Interrupted system call
     1	0x0000000000411361: assert_on_unhandled_exception at processor.c:659
     2	0x0000000000406186: _vcpu_run at kvm_util.c:1699
     3	 (inlined by) vcpu_run at kvm_util.c:1710
     4	0x0000000000401f2a: main at hyperv_svm_test.c:175
     5	0x000000000041d0d3: __libc_start_call_main at libc-start.o:?
     6	0x000000000041f27c: __libc_start_main_impl at ??:?
     7	0x00000000004021a0: _start at ??:?
  vmcb->control.exit_code == SVM_EXIT_VMMCALL

Do *not* fix this by skipping svm_hv_vmcb_dirty_nested_enlightenments()
when svm_set_intercept_for_msr() performs a no-op change.  changes to
the L0 MSR interception bitmap are only triggered by full CPUID updates
and MSR filter updates, both of which should be rare.  Changing
svm_set_intercept_for_msr() risks hiding unintended pessimizations
like this one, and is actually more complex than this change.

Fixes: fbe5e5f030 ("KVM: nSVM: Always recalculate LBR MSR intercepts in svm_update_lbrv()")
Cc: stable@vger.kernel.org
Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251112013017.1836863-1-yosry.ahmed@linux.dev
[Rewritten commit message based on mailing list discussion. - Paolo]
Reviewed-by: Sean Christopherson <seanjc@google.com>
Tested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-11-18 17:52:20 +01:00
Paolo Bonzini
b82ebaf298 Merge tag 'kvmarm-fixes-6.18-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 6.18, take #3

- Only adjust the ID registers when no irqchip has been created once
  per VM run, instead of doing it once per vcpu, as this otherwise
  triggers a pretty bad conbsistency check failure in the sysreg code.

- Make sure the per-vcpu Fine Grain Traps are computed before we load
  the system registers on the HW, as we otherwise start running without
  anything set until the first preemption of the vcpu.
2025-11-18 17:38:01 +01:00
Linus Torvalds
5bebe8de19 mm/huge_memory: Fix initialization of huge zero folio
The recent fix to properly initialize the tags of the huge zero folio
had an unfortunate not-so-subtle side effect: it caused the actual
*contents* of the huge zero folio to not be initialized at all when the
hardware didn't support the memory tagging.

The reason was the unfortunate semantics of tag_clear_highpage(): on
hardware that didn't do the tagging, it would silently just not do
anything at all.  And since this is done only on arm64 with MTE support,
that basically meant most hardware.

It wasn't necessarily immediately obvious since the huge zero page isn't
necessarily very heavily used - or because it might already be zero
because all-zeroes is the most common pattern.  But it ends up causing
random odd user space failures when you do hit it.

The unfortunate semantics have been around for a while, but became a
real bug only when we started actively using __GFP_ZEROTAGS in the
generic get_huge_zero_folio() function - before that, it had only ever
been used in code that checked that the hardware supported it.

Fix this by simply changing the semantics of tag_clear_highpage() to
return whether it actually successfully did something or not.  While at
it, also make it initialize multiple pages in one go, since that's
actually what the only caller wants it to do and it simplifies the whole
logic.

Fixes: adfb6609c6 ("mm/huge_memory: initialise the tags of the huge zero folio")
Link: https://lore.kernel.org/all/20251117082023.90176-1-00107082@163.com/
Reviewed-by: David Hildenbrand (Red Hat) <david@kernel.org>
Reported-and-tested-by: David Wang <00107082@163.com>
Reported-and-tested-by: Carlos Llamas <cmllamas@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2025-11-18 08:21:27 -08:00
Linus Torvalds
e7c375b181 Merge tag 'vfs-6.18-rc7.fixes' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:

 - Fix unitialized variable in statmount_string()

 - Fix hostfs mounting when passing host root during boot

 - Fix dynamic lookup to fail on cell lookup failure

 - Fix missing file type when reading bfs inodes from disk

 - Enforce checking of sb_min_blocksize() calls and update all callers
   accordingly

 - Restore write access before closing files opened by open_exec() in
   binfmt_misc

 - Always freeze efivarfs during suspend/hibernate cycles

 - Fix statmount()'s and listmount()'s grab_requested_mnt_ns() helper to
   actually allow mount namespace file descriptor in addition to mount
   namespace ids

 - Fix tmpfs remount when noswap is specified

 - Switch Landlock to iput_not_last() to remove false-positives from
   might_sleep() annotations in iput()

 - Remove dead node_to_mnt_ns() code

 - Ensure that per-queue kobjects are successfully created

* tag 'vfs-6.18-rc7.fixes' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs:
  landlock: fix splats from iput() after it started calling might_sleep()
  fs: add iput_not_last()
  shmem: fix tmpfs reconfiguration (remount) when noswap is set
  fs/namespace: correctly handle errors returned by grab_requested_mnt_ns
  power: always freeze efivarfs
  binfmt_misc: restore write access before closing files opened by open_exec()
  block: add __must_check attribute to sb_min_blocksize()
  virtio-fs: fix incorrect check for fsvq->kobj
  xfs: check the return value of sb_min_blocksize() in xfs_fs_fill_super
  isofs: check the return value of sb_min_blocksize() in isofs_fill_super
  exfat: check return value of sb_min_blocksize in exfat_read_boot_sector
  vfat: fix missing sb_min_blocksize() return value checks
  mnt: Remove dead code which might prevent from building
  bfs: Reconstruct file type when loading from disk
  afs: Fix dynamic lookup to fail on cell lookup failure
  hostfs: Fix only passing host root in boot stage with new mount
  fs: Fix uninitialized 'offp' in statmount_string()
2025-11-17 09:11:27 -08:00
Linus Torvalds
418592a040 Merge tag 'sched_ext-for-6.18-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext fixes from Tejun Heo:
 "Five fixes addressing PREEMPT_RT compatibility and locking issues.

  Three commits fix potential deadlocks and sleeps in atomic contexts on
  RT kernels by converting locks to raw spinlocks and ensuring IRQ work
  runs in hard-irq context. The remaining two fix unsafe locking in the
  debug dump path and a variable dereference typo"

* tag 'sched_ext-for-6.18-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
  sched_ext: Use IRQ_WORK_INIT_HARD() to initialize rq->scx.kick_cpus_irq_work
  sched_ext: Fix possible deadlock in the deferred_irq_workfn()
  sched/ext: convert scx_tasks_lock to raw spinlock
  sched_ext: Fix unsafe locking in the scx_dump_state()
  sched_ext: Fix use of uninitialized variable in scx_bpf_cpuperf_set()
2025-11-17 09:01:22 -08:00
Linus Torvalds
e97c61885b Merge tag 'mtd/fixes-for-6.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull MTD fixes from Miquel Raynal:
 "Mostly small misc fixes, here they are sorted by sub-subsystem:

  ECC fixes:
   - Realtek Kconfig fix

  SPI NAND fixes:
   - Remove nonexistent QE bit on FMSH FM25S01A

  Raw NAND fixes:
   - Prevent DMA device NULL pointer dereference in Cadence driver

  MTD device fixes:
   - Possible integer overflow in read/write ioctls
   - Fix the IRQ handler pointer in the onenand driver, even if in
     practice it is never dereferenced.

* tag 'mtd/fixes-for-6.18-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
  mtd: onenand: Pass correct pointer to IRQ handler
  mtd: spinand: fmsh: remove QE bit for FM25S01A flash
  mtd: rawnand: cadence: fix DMA device NULL pointer dereference
  mtd: rawnand: realtek: Make rtl_ecc_engine_ops const
  mtd: nand: MTD_NAND_ECC_REALTEK should depend on HAS_DMA
  mtd: nand: realtek-ecc: Fix a IS_ERR() vs NULL bug in probe
  mtdchar: fix integer overflow in read/write ioctls
2025-11-17 08:57:21 -08:00
Zqiang
36c6f3c03d sched_ext: Use IRQ_WORK_INIT_HARD() to initialize rq->scx.kick_cpus_irq_work
For PREEMPT_RT kernels, the kick_cpus_irq_workfn() be invoked in
the per-cpu irq_work/* task context and there is no rcu-read critical
section to protect. this commit therefore use IRQ_WORK_INIT_HARD() to
initialize the per-cpu rq->scx.kick_cpus_irq_work in the
init_sched_ext_class().

Signed-off-by: Zqiang <qiang.zhang@linux.dev>
Signed-off-by: Tejun Heo <tj@kernel.org>
2025-11-17 05:07:22 -10:00
Linus Torvalds
6a23ae0a96 Linux 6.18-rc6 v6.18-rc6 2025-11-16 14:25:38 -08:00
Linus Torvalds
998ccc327b Merge tag 'perf-tools-fixes-for-v6.18-2-2025-11-16' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix writing bpf_prog (infos|btfs)_cnt to data file, to not generate
   invalid perf.data files in some corner cases.

 - Fix 'perf top' segfault by ensuring libbfd is initialized. This is an
   opt-in feature due to license incompatibilities.

 - Fix segfault in 'perf lock' due to missing kernel map.

 - Fix 'perf lock contention' test.

 - Don't fail fast path detection if binutils-devel isn't available.

 - Sync KVM's vmx.h with the kernel to pick SEAMCALL exit reason.

* tag 'perf-tools-fixes-for-v6.18-2-2025-11-16' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools:
  perf libbfd: Ensure libbfd is initialized prior to use
  perf test: Fix lock contention test
  perf lock: Fix segfault due to missing kernel map
  tools headers UAPI: Sync KVM's vmx.h with the kernel to pick SEAMCALL exit reason
  perf build: Don't fail fast path feature detection when binutils-devel is not available
  perf header: Write bpf_prog (infos|btfs)_cnt to data file
2025-11-16 13:45:03 -08:00
Linus Torvalds
7ba45f1504 Merge tag 'mm-hotfixes-stable-2025-11-16-10-40' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
 "7 hotfixes.  5 are cc:stable, 4 are against mm/

  All are singletons - please see the respective changelogs for details"

* tag 'mm-hotfixes-stable-2025-11-16-10-40' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm, swap: fix potential UAF issue for VMA readahead
  selftests/user_events: fix type cast for write_index packed member in perf_test
  lib/test_kho: check if KHO is enabled
  mm/huge_memory: fix folio split check for anon folios in swapcache
  MAINTAINERS: update David Hildenbrand's email address
  crash: fix crashkernel resource shrink
  mm: fix MAX_FOLIO_ORDER on powerpc configs with hugetlb
2025-11-16 13:31:14 -08:00
Linus Torvalds
7254a2b522 Merge tag 'firewire-fixes-6.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire fixes from Takashi Sakamoto:
 "This includes some fixes for the topology map, newly introduced in
  v6.18 kernel"

* tag 'firewire-fixes-6.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
  firewire: core: fix to update generation field in topology map
  firewire: core: Initialize topology_map.lock
2025-11-16 07:08:28 -08:00
Linus Torvalds
87751e715e Merge tag 'edac_urgent_for_v6.18_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC fixes from Borislav Petkov:

 - In Versalnet, handle the reporting of non-standard hw errors whose
   information can come in more than one remote processor message.

 - Explicitly reenable ECC checking after a warm reset in Altera OCRAM
   as those registers are reset to default otherwise

 - Fix single-bit error injection in Altera EDAC to not inject errors
   directly in ECC RAM and thus lead to false double-bit errors due to
   same ECC RAM being in concurrent use

* tag 'edac_urgent_for_v6.18_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
  EDAC/altera: Use INTTEST register for Ethernet and USB SBE injection
  EDAC/altera: Handle OCRAM ECC enable after warm reset
  EDAC/versalnet: Handle split messages for non-standard errors
2025-11-16 07:05:24 -08:00
Takashi Sakamoto
1107aac1ad firewire: core: fix to update generation field in topology map
The generation field of topology map is updated after initialized by zero.
The updated value of generation field is always zero, and is against
specification.

This commit fixes the bug.

Fixes: 7d138cb269 ("firewire: core: use spin lock specific to topology map")
Link: https://lore.kernel.org/r/20251114144421.415278-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
2025-11-16 21:30:26 +09:00
Kairui Song
1c2a936edd mm, swap: fix potential UAF issue for VMA readahead
Since commit 78524b05f1 ("mm, swap: avoid redundant swap device
pinning"), the common helper for allocating and preparing a folio in the
swap cache layer no longer tries to get a swap device reference
internally, because all callers of __read_swap_cache_async are already
holding a swap entry reference.  The repeated swap device pinning isn't
needed on the same swap device.

Caller of VMA readahead is also holding a reference to the target entry's
swap device, but VMA readahead walks the page table, so it might encounter
swap entries from other devices, and call __read_swap_cache_async on
another device without holding a reference to it.

So it is possible to cause a UAF when swapoff of device A raced with
swapin on device B, and VMA readahead tries to read swap entries from
device A.  It's not easy to trigger, but in theory, it could cause real
issues.

Make VMA readahead try to get the device reference first if the swap
device is a different one from the target entry.

Link: https://lkml.kernel.org/r/20251111-swap-fix-vma-uaf-v1-1-41c660e58562@tencent.com
Fixes: 78524b05f1 ("mm, swap: avoid redundant swap device pinning")
Suggested-by: Huang Ying <ying.huang@linux.alibaba.com>
Signed-off-by: Kairui Song <kasong@tencent.com>
Acked-by: Chris Li <chrisl@kernel.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Kemeng Shi <shikemeng@huaweicloud.com>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-11-15 10:52:02 -08:00
Ankit Khushwaha
216158f063 selftests/user_events: fix type cast for write_index packed member in perf_test
Accessing 'reg.write_index' directly triggers a -Waddress-of-packed-member
warning due to potential unaligned pointer access:

perf_test.c:239:38: warning: taking address of packed member 'write_index'
of class or structure 'user_reg' may result in an unaligned pointer value
[-Waddress-of-packed-member]
  239 |         ASSERT_NE(-1, write(self->data_fd, &reg.write_index,
      |                                             ^~~~~~~~~~~~~~~

Since write(2) works with any alignment. Casting '&reg.write_index'
explicitly to 'void *' to suppress this warning.

Link: https://lkml.kernel.org/r/20251106095532.15185-1-ankitkhushwaha.linux@gmail.com
Fixes: 42187bdc3c ("selftests/user_events: Add perf self-test for empty arguments events")
Signed-off-by: Ankit Khushwaha <ankitkhushwaha.linux@gmail.com>
Cc: Beau Belgrave <beaub@linux.microsoft.com>
Cc: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: sunliming <sunliming@kylinos.cn>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-11-15 10:52:02 -08:00
Pasha Tatashin
a26ec8f3d4 lib/test_kho: check if KHO is enabled
We must check whether KHO is enabled prior to issuing KHO commands,
otherwise KHO internal data structures are not initialized.

Link: https://lkml.kernel.org/r/20251106220635.2608494-1-pasha.tatashin@soleen.com
Fixes: b753522bed ("kho: add test for kexec handover")
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202511061629.e242724-lkp@intel.com
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Alexander Graf <graf@amazon.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-11-15 10:52:01 -08:00
Zi Yan
f1d47cafe5 mm/huge_memory: fix folio split check for anon folios in swapcache
Both uniform and non uniform split check missed the check to prevent
splitting anon folios in swapcache to non-zero order.

Splitting anon folios in swapcache to non-zero order can cause data
corruption since swapcache only support PMD order and order-0 entries. 
This can happen when one use split_huge_pages under debugfs to split
anon folios in swapcache.

In-tree callers do not perform such an illegal operation.  Only debugfs
interface could trigger it.  I will put adding a test case on my TODO
list.

Fix the check.

Link: https://lkml.kernel.org/r/20251105162910.752266-1-ziy@nvidia.com
Fixes: 58729c04cf ("mm/huge_memory: add buddy allocator like (non-uniform) folio_split()")
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reported-by: "David Hildenbrand (Red Hat)" <david@kernel.org>
Closes: https://lore.kernel.org/all/dc0ecc2c-4089-484f-917f-920fdca4c898@kernel.org/
Acked-by: David Hildenbrand (Red Hat) <david@kernel.org>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Nico Pache <npache@redhat.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-11-15 10:52:01 -08:00
David Hildenbrand (Red Hat)
3470715e5c MAINTAINERS: update David Hildenbrand's email address
Switch to kernel.org email address as I will be leaving Red Hat.  The old
address will remain active until end of January 2026, so performing the
change now should make sure that most mails will reach me.

Link: https://lkml.kernel.org/r/20251103103659.379335-1-david@kernel.org
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: David Hildenbrand (Red Hat) <david@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-11-15 10:52:01 -08:00
Sourabh Jain
00fbff75c5 crash: fix crashkernel resource shrink
When crashkernel is configured with a high reservation, shrinking its
value below the low crashkernel reservation causes two issues:

1. Invalid crashkernel resource objects
2. Kernel crash if crashkernel shrinking is done twice

For example, with crashkernel=200M,high, the kernel reserves 200MB of high
memory and some default low memory (say 256MB).  The reservation appears
as:

cat /proc/iomem | grep -i crash
af000000-beffffff : Crash kernel
433000000-43f7fffff : Crash kernel

If crashkernel is then shrunk to 50MB (echo 52428800 >
/sys/kernel/kexec_crash_size), /proc/iomem still shows 256MB reserved:
af000000-beffffff : Crash kernel

Instead, it should show 50MB:
af000000-b21fffff : Crash kernel

Further shrinking crashkernel to 40MB causes a kernel crash with the
following trace (x86):

BUG: kernel NULL pointer dereference, address: 0000000000000038
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP NOPTI
<snip...>
Call Trace: <TASK>
? __die_body.cold+0x19/0x27
? page_fault_oops+0x15a/0x2f0
? search_module_extables+0x19/0x60
? search_bpf_extables+0x5f/0x80
? exc_page_fault+0x7e/0x180
? asm_exc_page_fault+0x26/0x30
? __release_resource+0xd/0xb0
release_resource+0x26/0x40
__crash_shrink_memory+0xe5/0x110
crash_shrink_memory+0x12a/0x190
kexec_crash_size_store+0x41/0x80
kernfs_fop_write_iter+0x141/0x1f0
vfs_write+0x294/0x460
ksys_write+0x6d/0xf0
<snip...>

This happens because __crash_shrink_memory()/kernel/crash_core.c
incorrectly updates the crashk_res resource object even when
crashk_low_res should be updated.

Fix this by ensuring the correct crashkernel resource object is updated
when shrinking crashkernel memory.

Link: https://lkml.kernel.org/r/20251101193741.289252-1-sourabhjain@linux.ibm.com
Fixes: 16c6006af4 ("kexec: enable kexec_crash_size to support two crash kernel regions")
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Zhen Lei <thunder.leizhen@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-11-15 10:52:01 -08:00
David Hildenbrand (Red Hat)
39231e8d6b mm: fix MAX_FOLIO_ORDER on powerpc configs with hugetlb
In the past, CONFIG_ARCH_HAS_GIGANTIC_PAGE indicated that we support
runtime allocation of gigantic hugetlb folios.  In the meantime it evolved
into a generic way for the architecture to state that it supports gigantic
hugetlb folios.

In commit fae7d834c4 ("mm: add __dump_folio()") we started using
CONFIG_ARCH_HAS_GIGANTIC_PAGE to decide MAX_FOLIO_ORDER: whether we could
have folios larger than what the buddy can handle.  In the context of that
commit, we started using MAX_FOLIO_ORDER to detect page corruptions when
dumping tail pages of folios.  Before that commit, we assumed that we
cannot have folios larger than the highest buddy order, which was
obviously wrong.

In commit 7b4f21f5e0 ("mm/hugetlb: check for unreasonable folio sizes
when registering hstate"), we used MAX_FOLIO_ORDER to detect
inconsistencies, and in fact, we found some now.

Powerpc allows for configs that can allocate gigantic folio during boot
(not at runtime), that do not set CONFIG_ARCH_HAS_GIGANTIC_PAGE and can
exceed PUD_ORDER.

To fix it, let's make powerpc select CONFIG_ARCH_HAS_GIGANTIC_PAGE with
hugetlb on powerpc, and increase the maximum folio size with hugetlb to 16
GiB on 64bit (possible on arm64 and powerpc) and 1 GiB on 32 bit
(powerpc).  Note that on some powerpc configurations, whether we actually
have gigantic pages depends on the setting of CONFIG_ARCH_FORCE_MAX_ORDER,
but there is nothing really problematic about setting it unconditionally:
we just try to keep the value small so we can better detect problems in
__dump_folio() and inconsistencies around the expected largest folio in
the system.

Ideally, we'd have a better way to obtain the maximum hugetlb folio size
and detect ourselves whether we really end up with gigantic folios.  Let's
defer bigger changes and fix the warnings first.

While at it, handle gigantic DAX folios more clearly: DAX can only end up
creating gigantic folios with HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD.

Add a new Kconfig option HAVE_GIGANTIC_FOLIOS to make both cases clearer. 
In particular, worry about ARCH_HAS_GIGANTIC_PAGE only with HUGETLB_PAGE.

Note: with enabling CONFIG_ARCH_HAS_GIGANTIC_PAGE on powerpc, we will now
also allow for runtime allocations of folios in some more powerpc configs.
I don't think this is a problem, but if it is we could handle it through
__HAVE_ARCH_GIGANTIC_PAGE_RUNTIME_SUPPORTED.

While __dump_page()/__dump_folio was also problematic (not handling
dumping of tail pages of such gigantic folios correctly), it doesn't seem
critical enough to mark it as a fix.

Link: https://lkml.kernel.org/r/20251114214920.2550676-1-david@kernel.org
Fixes: 7b4f21f5e0 ("mm/hugetlb: check for unreasonable folio sizes when registering hstate")
Reported-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Closes: https://lore.kernel.org/r/3e043453-3f27-48ad-b987-cc39f523060a@csgroup.eu/
Reported-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Closes: https://lore.kernel.org/r/94377f5c-d4f0-4c0f-b0f6-5bf1cd7305b1@linux.ibm.com/
Signed-off-by: David Hildenbrand (Red Hat) <david@kernel.org>
Cc: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Donet Tom <donettom@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-11-15 10:52:00 -08:00
Linus Torvalds
f824272b6e Merge tag 's390-6.18-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fix from Heiko Carstens:

 - Fix a bug in the __ptep_rdp() inline assembly which may lead to
   missing TLB flushes

* tag 's390-6.18-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/mm: Fix __ptep_rdp() inline assembly
2025-11-15 09:01:00 -08:00
Linus Torvalds
b8a2c32b22 Merge tag 'x86-urgent-2025-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:

 - Update the list of AMD microcode minimum Entrysign revisions

 - Add additional fixed AMD RDSEED microcode revisions

 - Update the language transliteration for Kiryl Shutsemau's name
   in the MAINTAINERS entry

* tag 'x86-urgent-2025-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/microcode/AMD: Add Zen5 model 0x44, stepping 0x1 minrev
  x86/CPU/AMD: Add additional fixed RDSEED microcode revisions
  MAINTAINERS: Update name spelling
2025-11-15 08:55:29 -08:00
Linus Torvalds
bb1a6ddcfa Merge tag 'timers-urgent-2025-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Ingo Molnar:
 "Fix a memory leak in the posix timer creation logic"

* tag 'timers-urgent-2025-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  posix-timers: Plug potential memory leak in do_timer_create()
2025-11-15 08:51:43 -08:00
Linus Torvalds
fa3ade5e8e Merge tag 'irq-urgent-2025-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Ingo Molnar:
 "Fix an irqchip driver release bug in the riscv-intc irqchip driver"

* tag 'irq-urgent-2025-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/riscv-intc: Add missing free() callback in riscv_intc_domain_ops
2025-11-15 08:48:51 -08:00
Linus Torvalds
e256f7b4e5 Merge tag 'core-urgent-2025-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core fix from Ingo Molnar:
 "Fix a broken #ifndef in the <linux/entry-virt.h> header.

  It hasn't caused problems upstream yet because no arch overrides
  arch_xfer_to_guest_mode_handle_work() at this moment"

* tag 'core-urgent-2025-11-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  entry: Fix ifndef around arch_xfer_to_guest_mode_handle_work() stub
2025-11-15 08:46:18 -08:00
Linus Torvalds
7a0892d283 Merge tag 'pci-v6.18-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci fixes from Bjorn Helgaas:

 - Cache the ASPM L0s/L1 Supported bits early so quirks can override
   them if necessary (Bjorn Helgaas)

 - Add quirks for PA Semi and Freescale Root Ports and a HiSilicon Wi-Fi
   device that are reported to have broken L0s and L1 (Shawn Lin, Bjorn
   Helgaas)

* tag 'pci-v6.18-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
  PCI/ASPM: Avoid L0s and L1 on Hi1105 [19e5:1105] Wi-Fi
  PCI/ASPM: Avoid L0s and L1 on PA Semi [1959:a002] Root Ports
  PCI/ASPM: Avoid L0s and L1 on Freescale [1957:0451] Root Ports
  PCI/ASPM: Convert quirks to override advertised link states
  PCI/ASPM: Add pcie_aspm_remove_cap() to override advertised link states
  PCI/ASPM: Cache L0s/L1 Supported so advertised link states can be overridden
2025-11-14 15:45:31 -08:00
Linus Torvalds
cbba5d1b53 Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Pull bpf fixes from Alexei Starovoitov:

 - Fix interaction between livepatch and BPF fexit programs (Song Liu)
   With Steven and Masami acks.

 - Fix stack ORC unwind from BPF kprobe_multi (Jiri Olsa)
   With Steven and Masami acks.

 - Fix out of bounds access in widen_imprecise_scalars() in the verifier
   (Eduard Zingerman)

 - Fix conflicts between MPTCP and BPF sockmap (Jiayuan Chen)

 - Fix net_sched storage collision with BPF data_meta/data_end (Eric
   Dumazet)

 - Add _impl suffix to BPF kfuncs with implicit args to avoid breaking
   them in bpf-next when KF_IMPLICIT_ARGS is added (Mykyta Yatsenko)

* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  selftests/bpf: Test widen_imprecise_scalars() with different stack depth
  bpf: account for current allocated stack depth in widen_imprecise_scalars()
  bpf: Add bpf_prog_run_data_pointers()
  selftests/bpf: Add mptcp test with sockmap
  mptcp: Fix proto fallback detection with BPF
  mptcp: Disallow MPTCP subflows from sockmap
  selftests/bpf: Add stacktrace ips test for raw_tp
  selftests/bpf: Add stacktrace ips test for kprobe_multi/kretprobe_multi
  x86/fgraph,bpf: Fix stack ORC unwind from kprobe_multi return probe
  Revert "perf/x86: Always store regs->ip in perf_callchain_kernel()"
  bpf: add _impl suffix for bpf_stream_vprintk() kfunc
  bpf:add _impl suffix for bpf_task_work_schedule* kfuncs
  selftests/bpf: Add tests for livepatch + bpf trampoline
  ftrace: bpf: Fix IPMODIFY + DIRECT in modify_ftrace_direct()
  ftrace: Fix BPF fexit with livepatch
2025-11-14 15:39:39 -08:00
Linus Torvalds
a752782a28 Merge tag 'rust-fixes-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull Rust fix from Miguel Ojeda:

 - Fix a Rust 1.91.0 build issue due to 'bindings.o' not containing
   DWARF debug information anymore by teaching gendwarfksyms to skip
   object files without exports

* tag 'rust-fixes-6.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux:
  gendwarfksyms: Skip files with no exports
2025-11-14 15:36:15 -08:00
Linus Torvalds
1cc41c88ef Merge tag 'nfs-for-6.18-3' of git://git.linux-nfs.org/projects/anna/linux-nfs
Pull NFS client fixes from Anna Schumaker:

 - Various fixes when using NFS with TLS

 - Localio direct-IO fixes

 - Fix error handling in nfs_atomic_open_v23()

 - Fix sysfs memory leak when nfs_client kobject add fails

 - Fix an incorrect parameter when calling nfs4_call_sync()

 - Fix a failing LTP test when using delegated timestamps

* tag 'nfs-for-6.18-3' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  NFS: Fix LTP test failures when timestamps are delegated
  NFSv4: Fix an incorrect parameter when calling nfs4_call_sync()
  NFS: sysfs: fix leak when nfs_client kobject add fails
  NFSv2/v3: Fix error handling in nfs_atomic_open_v23()
  nfs/localio: do not issue misaligned DIO out-of-order
  nfs/localio: Ensure DIO WRITE's IO on stable storage upon completion
  nfs/localio: backfill missing partial read support for misaligned DIO
  nfs/localio: add refcounting for each iocb IO associated with NFS pgio header
  nfs/localio: remove unecessary ENOTBLK handling in DIO WRITE support
  NFS: Check the TLS certificate fields in nfs_match_client()
  pnfs: Set transport security policy to RPC_XPRTSEC_NONE unless using TLS
  pnfs: Fix TLS logic in _nfs4_pnfs_v4_ds_connect()
  pnfs: Fix TLS logic in _nfs4_pnfs_v3_ds_connect()
2025-11-14 13:44:23 -08:00
Linus Torvalds
d5c1b4b432 Merge tag 'drm-fixes-2025-11-15' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
 "Weekly fixes, amdgpu and vmwgfx making up the most of it, along with
  panthor and i915/xe.

  Seems about right for this time of development, nothing major
  outstanding.

  client:
   - Fix description of module parameter

  panthor:
   - Flush writes before mapping buffers

  vmwgfx:
   - Improve command validation
   - Improve ref counting
   - Fix cursor-plane support

  amdgpu:
   - Disallow P2P DMA for GC 12 DCC surfaces
   - ctx error handling fix
   - UserQ fixes
   - VRR fix
   - ISP fix
   - JPEG 5.0.1 fix

  amdkfd:
   - Save area check fix
   - Fix GPU mappings for APU after prefetch

  i915:
   - Fix PSR's pipe to vblank conversion
   - Disable Panel Replay on MST links

  xe:
   - New HW workarounds affecting PTL and WCL platforms

* tag 'drm-fixes-2025-11-15' of https://gitlab.freedesktop.org/drm/kernel:
  drm/client: fix MODULE_PARM_DESC string for "active"
  drm/i915/dp_mst: Disable Panel Replay
  drm/amdkfd: Fix GPU mappings for APU after prefetch
  drm/amdkfd: relax checks for over allocation of save area
  drm/amdgpu/jpeg: Add parse_cs for JPEG5_0_1
  drm/amd/amdgpu: Ensure isp_kernel_buffer_alloc() creates a new BO
  drm/amd/display: Allow VRR params change if unsynced with the stream
  drm/amdgpu: fix lock warning in amdgpu_userq_fence_driver_process
  drm/amdgpu: jump to the correct label on failure
  drm/amdgpu: disable peer-to-peer access for DCC-enabled GC12 VRAM surfaces
  drm/xe/xe3lpg: Extend Wa_15016589081 for xe3lpg
  drm/xe/xe3: Extend wa_14023061436
  drm/xe/xe3: Add WA_14024681466 for Xe3_LPG
  drm/i915/psr: fix pipe to vblank conversion
  drm/panthor: Flush shmem writes before mapping buffers CPU-uncached
  drm/vmwgfx: Restore Guest-Backed only cursor plane support
  drm/vmwgfx: Use kref in vmw_bo_dirty
  drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE
2025-11-14 13:39:15 -08:00
Linus Torvalds
ccc0011804 Merge tag 'mmc-v6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:

 - dw_mmc-rockchip: Fix internal phase calculation

 - pxamci: Simplify and fix ->probe() error handling

 - sdhci-of-dwcmshc: Fix strbin signal delay

 - wmt-sdmmc: Fix compile test default

* tag 'mmc-v6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: dw_mmc-rockchip: Fix wrong internal phase calculate
  mmc: pxamci: Simplify pxamci_probe() error handling using devm APIs
  mmc: sdhci-of-dwcmshc: Change DLL_STRBIN_TAPNUM_DEFAULT to 0x4
  mmc: wmt-sdmmc: fix compile test default
2025-11-14 13:34:36 -08:00
Linus Torvalds
241e99dbdc Merge tag 'pmdomain-v6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
Pull pmdomain fixes from Ulf Hansson:

 - imx: Fix reference count leak in ->remove()

 - samsung: Rework legacy splash-screen handover workaround

 - samsung: Fix potential memleak during ->probe()

 - arm: Fix genpd leak on provider registration failure for scmi

* tag 'pmdomain-v6.18-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm:
  pmdomain: imx: Fix reference count leak in imx_gpc_remove
  pmdomain: samsung: Rework legacy splash-screen handover workaround
  pmdomain: arm: scmi: Fix genpd leak on provider registration failure
  pmdomain: samsung: plug potential memleak during probe
2025-11-14 13:29:15 -08:00
Linus Torvalds
6014e75e87 Merge tag 'cxl-fixes-6.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull cxl fixes from Dave Jiang:

 - Fix incorrect device handle check for Generic Initiator

 - Fix offset calculation for extended linear cache poison injection

 - Fix lockdep warning for hmem_register_resource()

* tag 'cxl-fixes-6.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
  acpi/hmat: Fix lockdep warning for hmem_register_resource()
  cxl: Adjust offset calculation for poison injection
  acpi,srat: Fix incorrect device handle check for Generic Initiator
2025-11-14 13:25:00 -08:00
Linus Torvalds
de90cc610e Merge tag 'spi-fix-v6.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
 "A few standard fixes here, plus one more interesting one from Hans
  which addresses an issue where a move in when we requested GPIOs on
  ACPI systems caused us to stop doing pinmuxing and leave things
  floating that we'd really rather not have floating"

* tag 'spi-fix-v6.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: Add TODO comment about ACPI GPIO setup
  spi: xilinx: increase number of retries before declaring stall
  spi: imx: keep dma request disabled before dma transfer setup
  spi: Try to get ACPI GPIO IRQ earlier
2025-11-14 13:04:35 -08:00
Linus Torvalds
809bd27452 Merge tag 'regulator-fix-v6.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
 "One simple fix for a GPIO descriptor leak in the probe error handling
  for the fixed regulator"

* tag 'regulator-fix-v6.18-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: fixed: fix GPIO descriptor leak on register failure
2025-11-14 13:01:23 -08:00
Linus Torvalds
27f518609e Merge tag 'sound-6.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
 "A collection of small fixes. All changes are device-specific, and
  nothing stands out.

   - A regression fix for HD-audio HDMI probe

   - USB-audio hardening patches for issues spotted by fuzzers

   - ASoC fixes for TAS278x, SoundWire and Cirrus

   - Usual HD-audio and USB-audio quirks"

* tag 'sound-6.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: usb-audio: Add native DSD quirks for PureAudio DAC series
  ASoC: rsnd: fix OF node reference leak in rsnd_ssiu_probe()
  ALSA: hda/tas2781: Correct the wrong project ID
  ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd
  ASoC: SDCA: bug fix while parsing mipi-sdca-control-cn-list
  ALSA: usb-audio: Fix potential overflow of PCM transfer buffer
  ALSA: hda/tas2781: Add new quirk for HP new projects
  ASoC: tas2781: fix getting the wrong device number
  ASoC: codecs: va-macro: fix resource leak in probe error path
  ASoC: tas2783A: Fix issues in firmware parsing
  ASoC: sdw_utils: fix device reference leak in is_sdca_endpoint_present()
  ASoC: cs4271: Fix regulator leak on probe failure
  ALSA: hda/hdmi: Fix breakage at probing nvhdmi-mcp driver
  ASoC: da7213: Use component driver suspend/resume
  ALSA: usb-audio: add min_mute quirk for SteelSeries Arctis
  ASoC: doc: cs35l56: Update firmware filename description for B0 silicon
2025-11-14 12:50:08 -08:00
Linus Torvalds
d4f8cccc62 Merge tag 'block-6.18-20251114' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block fixlet from Jens Axboe:
 "Been sitting on this one for a week or two, planning on sending it out
  when there were other block changes for 6.18. But as that hasn't
  materialized in the second week of sitting on it, let's flush it out.

  A previous commit updated my git tree locations, but one was missed as
  it was already set to the git.kernel.org one. But the git location swap
  also renamed the actual tree from linux-block to just linux, let's get
  that last one updated too"

* tag 'block-6.18-20251114' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  MAINTAINERS: correct git location for block layer tree
2025-11-14 10:18:45 -08:00
Linus Torvalds
ac9f4f306d Merge tag 'io_uring-6.18-20251113' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring fixes from Jens Axboe:

 - Use the actual segments in a request when for bvec based buffers

 - Fix an odd case where the iovec might get leaked for a read/write
   request, if it was newly allocated, overflowed the alloc cache, and
   hit an early error

 - Minor tweak to the query API added in this release, returning the
   number of available entries

* tag 'io_uring-6.18-20251113' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  io_uring/rsrc: don't use blk_rq_nr_phys_segments() as number of bvecs
  io_uring/query: return number of available queries
  io_uring/rw: ensure allocated iovec gets cleared for early failure
2025-11-14 09:57:30 -08:00
Eduard Zingerman
6c762611fe selftests/bpf: Test widen_imprecise_scalars() with different stack depth
A test case for a situation when widen_imprecise_scalars() is called
with old->allocated_stack > cur->allocated_stack. Test structure:

    def widening_stack_size_bug():
      r1 = 0
      for r6 in 0..1:
        iterator_with_diff_stack_depth(r1)
        r1 = 42

    def iterator_with_diff_stack_depth(r1):
      if r1 != 42:
        use 128 bytes of stack
      iterator based loop

iterator_with_diff_stack_depth() is verified with r1 == 0 first and
r1 == 42 next. Causing stack usage of 128 bytes on a first visit and 8
bytes on a second. Such arrangement triggered a KASAN error in
widen_imprecise_scalars().

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20251114025730.772723-2-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-11-14 09:26:28 -08:00
Eduard Zingerman
b0c8e6d3d8 bpf: account for current allocated stack depth in widen_imprecise_scalars()
The usage pattern for widen_imprecise_scalars() looks as follows:

    prev_st = find_prev_entry(env, ...);
    queued_st = push_stack(...);
    widen_imprecise_scalars(env, prev_st, queued_st);

Where prev_st is an ancestor of the queued_st in the explored states
tree. This ancestor is not guaranteed to have same allocated stack
depth as queued_st. E.g. in the following case:

    def main():
      for i in 1..2:
        foo(i)        // same callsite, differnt param

    def foo(i):
      if i == 1:
        use 128 bytes of stack
      iterator based loop

Here, for a second 'foo' call prev_st->allocated_stack is 128,
while queued_st->allocated_stack is much smaller.
widen_imprecise_scalars() needs to take this into account and avoid
accessing bpf_verifier_state->frame[*]->stack out of bounds.

Fixes: 2793a8b015 ("bpf: exact states comparison for iterator convergence checks")
Reported-by: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20251114025730.772723-1-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2025-11-14 09:26:05 -08:00