Linus Torvalds [Wed, 4 Feb 2026 18:38:56 +0000 (10:38 -0800)]
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
- Fix a bug where AVIC is incorrectly inhibited when running with
x2AVIC disabled via module param (or on a system without x2AVIC)
- Fix a dangling device posted IRQs bug by explicitly checking if the
irqfd is still active (on the list) when handling an eventfd signal,
instead of zeroing the irqfd's routing information when the irqfd is
deassigned.
Zeroing the irqfd's routing info causes arm64 and x86's to not
disable posting for the IRQ (kvm_arch_irq_bypass_del_producer() looks
for an MSI), incorrectly leaving the IRQ in posted mode (and leading
to use-after-free and memory leaks on AMD in particular).
This is both the most pressing and scariest, but it's been in -next
for a while.
- Disable FORTIFY_SOURCE for KVM selftests to prevent the compiler from
generating calls to the checked versions of memset() and friends,
which leads to unexpected page faults in guest code due e.g.
__memset_chk@plt not being resolved.
- Explicitly configure the supported XSS capabilities from within
{svm,vmx}_set_cpu_caps() to fix a bug where VMX will compute the
reference VMCS configuration with SHSTK and IBT enabled, but then
compute each CPUs local config with SHSTK and IBT disabled if not all
CET xfeatures are enabled, e.g. if the kernel is built with
X86_KERNEL_IBT=n.
The mismatch in features results in differing nVMX setting, and
ultimately causes kvm-intel.ko to refuse to load with nested=1.
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86: Explicitly configure supported XSS from {svm,vmx}_set_cpu_caps()
KVM: selftests: Add -U_FORTIFY_SOURCE to avoid some unpredictable test failures
KVM: x86: Assert that non-MSI doesn't have bypass vCPU when deleting producer
KVM: Don't clobber irqfd routing type when deassigning irqfd
KVM: SVM: Check vCPU ID against max x2AVIC ID if and only if x2AVIC is enabled
Paolo Bonzini [Wed, 4 Feb 2026 17:30:32 +0000 (18:30 +0100)]
Merge tag 'kvm-x86-fixes-6.19-rc8' of https://github.com/kvm-x86/linux into HEAD
Final KVM fixes for 6.19:
- Fix a bug where AVIC is incorrectly inhibited when running with x2AVIC
disabled via module param (or on a system without x2AVIC).
- Fix a dangling device posted IRQs bug by explicitly checking if the irqfd is
still active (on the list) when handling an eventfd signal, instead of
zeroing the irqfd's routing information when the irqfd is deassigned.
Zeroing the irqfd's routing info causes arm64 and x86's to not disable
posting for the IRQ (kvm_arch_irq_bypass_del_producer() looks for an MSI),
incorrectly leaving the IRQ in posted mode (and leading to use-after-free
and memory leaks on AMD in particular).
This is both the most pressing and scariest, but it's been in -next for
a while.
- Disable FORTIFY_SOURCE for KVM selftests to prevent the compiler from
generating calls to the checked versions of memset() and friends, which
leads to unexpected page faults in guest code due e.g. __memset_chk@plt
not being resolved.
- Explicitly configure the support XSS from within {svm,vmx}_set_cpu_caps() to
fix a bug where VMX will compute the reference VMCS configuration with SHSTK
and IBT enabled, but then compute each CPUs local config with SHSTK and IBT
disabled if not all CET xfeatures are enabled, e.g. if the kernel is built
with X86_KERNEL_IBT=n. The mismatch in features results in differing nVMX
setting, and ultimately causes kvm-intel.ko to refuse to load with nested=1.
Linus Torvalds [Wed, 4 Feb 2026 16:26:22 +0000 (08:26 -0800)]
Merge tag 'soc-fixes-6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull SoC fixes from Arnd Bergmann:
"Shawn Guo is moving on from maintaining the NXP i.MX platform and
hands over to Frank Li. Shawn has maintained the platform for 15 years
after initially upstreaming support for i.MX6 and i.MX23/28, and his
work has helped make this the most important industrial embedded Linux
platform. Roughly one out of five devicetree files in mainline kernels
are for the wider i.MX platform. Many thanks to Shawn for the taking
care of the platform all these years!
There are also two additional updates for the MAINTAINERS file, and a
fix for error handling in the qualcomm smem driver"
* tag 'soc-fixes-6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
MAINTAINERS: Change Sudeep Holla's email address
MAINTAINERS: Add myself as maintainer of hisi_soc_hha
soc: qcom: smem: fix qcom_smem_is_available and check if __smem is valid
MAINTAINERS: Replace Shawn with Frank as i.MX platform maintainer
Linus Torvalds [Wed, 4 Feb 2026 00:20:59 +0000 (16:20 -0800)]
Merge tag 'v6.19rc8-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
"Two small client memory leak fixes"
* tag 'v6.19rc8-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
smb/client: fix memory leak in SendReceive()
smb/client: fix memory leak in smb2_open_file()
Linus Torvalds [Tue, 3 Feb 2026 18:19:58 +0000 (10:19 -0800)]
Merge tag 'for-6.19-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fix from David Sterba:
"A regression fix for a memory leak when raid56 is used"
* tag 'for-6.19-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: raid56: fix memory leak of btrfs_raid_bio::stripe_uptodate_bitmap
Filipe Manana [Fri, 30 Jan 2026 17:06:45 +0000 (17:06 +0000)]
btrfs: raid56: fix memory leak of btrfs_raid_bio::stripe_uptodate_bitmap
We allocate the bitmap but we never free it in free_raid_bio_pointers().
Fix this by adding a bitmap_free() call against the stripe_uptodate_bitmap
of a raid bio.
Fixes: 1810350b04ef ("btrfs: raid56: move sector_ptr::uptodate into a dedicated bitmap") Reported-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/linux-btrfs/20260126045315.GA31641@lst.de/ Reviewed-by: Qu Wenruo <wqu@suse.com> Tested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Linus Torvalds [Mon, 2 Feb 2026 23:14:45 +0000 (15:14 -0800)]
Merge tag 'cgroup-for-6.19-rc8-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
"Three dmem fixes from Chen Ridong addressing use-after-free, RCU
warning, and NULL pointer dereference issues introduced with the dmem
controller.
All changes are confined to kernel/cgroup/dmem.c and can only affect
dmem controller users"
* tag 'cgroup-for-6.19-rc8-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup/dmem: avoid pool UAF
cgroup/dmem: avoid rcu warning when unregister region
cgroup/dmem: fix NULL pointer dereference when setting max
Linus Torvalds [Mon, 2 Feb 2026 17:48:23 +0000 (09:48 -0800)]
Merge tag 'lsm-pr-20260202' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm
Pull lsm fix from Paul Moore:
"A small patch to address a regression found in the v6.19-rcX releases
where the /proc/sys/vm/mmap_min_addr tunable disappeared when
CONFIG_SECURITY was not selected.
Long term we plan to work with the MM folks to get the core parts of
this moved over to the MM subsystem, but in the meantime we need to
fix this regression prior to the v6.19 release"
* tag 'lsm-pr-20260202' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm:
lsm: preserve /proc/sys/vm/mmap_min_addr when !CONFIG_SECURITY
The buggy address belongs to the object at ffff888106715400
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 64 bytes inside of
freed 512-byte region [ffff888106715400, ffff888106715600)
The buggy address belongs to the physical page:
Memory state around the buggy address: ffff888106715300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888106715380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888106715400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^ ffff888106715480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888106715500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
The issue occurs because a pool can still be held by a caller after its
associated memory region is unregistered. The current implementation frees
the pool even if users still hold references to it (e.g., before uncharge
operations complete).
This patch adds a reference counter to each pool, ensuring that a pool is
only freed when its reference count drops to zero.
The macro list_for_each_rcu() must be used within an RCU read-side critical
section (between rcu_read_lock() and rcu_read_unlock()). Using it outside
that context, as seen in dmem_cgroup_unregister_region(), triggers the
lockdep warning because the RCU protection is not guaranteed.
Replace list_for_each_rcu() with list_for_each_entry_safe(), which is
appropriate for traversal under spinlock protection where nodes may be
deleted.
It was trriggered setting max without limitation, the command is like:
"echo test/region0 > dmem.max". To fix this issue, add check whether
options is valid after parsing the region_name.
Linus Torvalds [Sun, 1 Feb 2026 18:27:43 +0000 (10:27 -0800)]
Merge tag 'objtool-urgent-2026-02-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Ingo Molnar:
- Fix a build error on ia32-x86_64 cross builds
- Replace locally open coded ALIGN_UP(), ALIGN_UP_POW2()
and MAX(), which, beyond being duplicates, the
ALIGN_UP_POW2() is also buggy
- Fix objtool klp-diff regression caused by a recent
change to the bug table format
- Fix klp-build vs CONFIG_MODULE_SRCVERSION_ALL build
failure
* tag 'objtool-urgent-2026-02-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
livepatch/klp-build: Fix klp-build vs CONFIG_MODULE_SRCVERSION_ALL
objtool/klp: Fix bug table handling for __WARN_printf()
objtool: Replace custom macros in elf.c with shared ones
objtool: Print bfd_vma as unsigned long long on ia32-x86_64 cross build
Linus Torvalds [Sun, 1 Feb 2026 18:24:01 +0000 (10:24 -0800)]
Merge tag 'irq-urgent-2026-02-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Ingo Molnar:
"Misc irqchip fixes:
- Fix a regression in the ls-extirq irqchip driver
- Fix an irqchip platform enumeration regression
in the simple-pm-bus driver"
* tag 'irq-urgent-2026-02-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
bus: simple-pm-bus: Probe the Layerscape SCFG node
irqchip/ls-extirq: Convert to a platform driver to make it work again
Linus Torvalds [Sat, 31 Jan 2026 17:40:13 +0000 (09:40 -0800)]
Merge tag 'iommu-fixes-v6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iommu fixes from Joerg Roedel:
- Fix a performance regression cause by the new Generic IO-Page-Table
code detected in Intel VT-d driver
- Command queue flushing fix for NVidia version of the ARM-SMMU-v3
* tag 'iommu-fixes-v6.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux:
iommu/tegra241-cmdqv: Reset VCMDQ in tegra241_vcmdq_hw_init_user()
iommupt: Only cache flush memory changed by unmap
Linus Torvalds [Sat, 31 Jan 2026 16:52:41 +0000 (08:52 -0800)]
Merge tag 'sound-6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Just a few device-specific fixes; all small and mostly trivial, should
be pretty safe to take at the late stage"
* tag 'sound-6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ASoC: sof_sdw: Add a quirk for Lenovo laptop using sidecar amps with cs42l43
ASoC: Intel: sof_es8336: fix headphone GPIO logic inversion
ASoC: amd: yc: Add DMI quirk for Acer TravelMate P216-41-TCO
ASoC: soc-acpi-intel-ptl-match: fix name_prefix of rt1320-2
ALSA: hda/realtek: Add quirk for Inspur S14-G1
ALSA: hda/realtek: fix right sounds and mute/micmute LEDs for HP machine
ALSA: hda/realtek: Really fix headset mic for TongFang X6AR55xU.
ALSA: hda/realtek - fixed speaker no sound
ASoC: amd: yc: Add ASUS ExpertBook PM1503CDA to quirks list
ASoC: fsl: imx-card: Do not force slot width to sample width
ASoC: dt-bindings: fsl,sai: Add support for i.MX952 platform
ASoC: cs35l45: Corrects ASP_TX5 DAPM widget channel
Linus Torvalds [Sat, 31 Jan 2026 16:21:32 +0000 (08:21 -0800)]
Merge tag 'kbuild-fixes-6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux
Pull Kbuild fixes from Nicolas Schier:
- Generate rpm-pkg debuginfo package manually, allowing signed kernel
modules in rpm package, again
- Fix permissions of modules.builtin.modinfo
- Do not run kernel-doc when building external modules
* tag 'kbuild-fixes-6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux:
kbuild: Do not run kernel-doc when building external modules
kbuild: Fix permissions of modules.builtin.modinfo
kbuild: rpm-pkg: Generate debuginfo package manually
kbuild: Do not run kernel-doc when building external modules
After commit 778b8ebe5192 ("docs: Move the python libraries to
tools/lib/python"), building an external module with any value of W=
against the output of install-extmod-build fails with:
$ make -C /usr/lib/modules/6.19.0-rc7-00108-g4d310797262f/build M=$PWD W=1
make: Entering directory '/usr/lib/modules/6.19.0-rc7-00108-g4d310797262f/build'
make[1]: Entering directory '...'
CC [M] ...
Traceback (most recent call last):
File "/usr/lib/modules/6.19.0-rc7-00108-g4d310797262f/build/scripts/kernel-doc.py", line 339, in <module>
main()
~~~~^^
File "/usr/lib/modules/6.19.0-rc7-00108-g4d310797262f/build/scripts/kernel-doc.py", line 295, in main
from kdoc.kdoc_files import KernelFiles # pylint: disable=C0415
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ModuleNotFoundError: No module named 'kdoc'
scripts/lib was included in the build directory from find_in_scripts but
after the move to tools/lib/python, it is no longer included, breaking
kernel-doc.py.
Commit eba6ffd126cd ("docs: kdoc: move kernel-doc to tools/docs") breaks
this even further by moving kernel-doc outside of scripts as well, so it
cannot be found when called by cmd_checkdoc.
$ make -C /usr/lib/modules/6.19.0-rc7-next-20260130/build M=$PWD W=1
make: Entering directory '/usr/lib/modules/6.19.0-rc7-next-20260130/build'
make[1]: Entering directory '...'
CC [M] ...
python3: can't open file '/usr/lib/modules/6.19.0-rc7-next-20260130/build/tools/docs/kernel-doc': [Errno 2] No such file or directory
While kernel-doc could be useful for external modules, it is more useful
for in-tree documentation that will be build and included in htmldocs.
Rather than including it in install-extmod-build, just skip running
kernel-doc for the external module build.
Cc: stable@vger.kernel.org Fixes: 778b8ebe5192 ("docs: Move the python libraries to tools/lib/python") Reported-by: Rong Zhang <i@rong.moe> Closes: https://lore.kernel.org/20260129175321.415295-1-i@rong.moe/ Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Link: https://patch.msgid.link/20260130-kbuild-skip-kernel-doc-extmod-v1-1-58443d60131a@kernel.org Reviewed-by: Nicolas Schier <nsc@kernel.org> Signed-off-by: Nicolas Schier <nsc@kernel.org>
Nicolin Chen [Thu, 29 Jan 2026 22:43:41 +0000 (14:43 -0800)]
iommu/tegra241-cmdqv: Reset VCMDQ in tegra241_vcmdq_hw_init_user()
The Enable bits in CMDQV/VINTF/VCMDQ_CONFIG registers do not actually reset
the HW registers. So, the driver explicitly clears all the registers when a
VINTF or VCMDQ is being initialized calling its hw_deinit() function.
However, a userspace VCMDQ is not properly reset, unlike an in-kernel VCMDQ
getting reset in tegra241_vcmdq_hw_init().
Meanwhile, tegra241_vintf_hw_init() calling tegra241_vintf_hw_deinit() will
not deinit any VCMDQ, since there is no userspace VCMDQ mapped to the VINTF
at that stage.
Then, this may result in dirty VCMDQ registers, which can fail the VM.
Like tegra241_vcmdq_hw_init(), reset a VCMDQ in tegra241_vcmdq_hw_init() to
fix this bug. This is required by a host kernel.
Linus Torvalds [Sat, 31 Jan 2026 01:07:45 +0000 (17:07 -0800)]
Merge tag 'firewire-fixes-6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire fix from Takashi Sakamoto:
"Fix a race condition introduced in v6.18.
Andreas Persson discovered this issue while working with Focusrite
Saffire Pro 40 (TCD33070). The fw_card instance maintains a linked
list of pending transactions, which must be protected against
concurrent access.
However, a commit b5725cfa4120 ("firewire: core: use spin lock
specific to timer for split transaction") unintentionally allowed
concurrent accesses to this list.
Fix this by adjusting the relevant critical sections to properly
serialize access"
* tag 'firewire-fixes-6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: core: fix race condition against transaction list
Linus Torvalds [Sat, 31 Jan 2026 00:57:36 +0000 (16:57 -0800)]
Merge tag 'riscv-for-linus-6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Paul Walmsley:
- Correct the RISC-V compat.h COMPAT_UTS_MACHINE architecture name
- Avoid printing a false warning message on kernels with the SiFive and
MIPS errata compiled in
- Address a few warnings generated by sparse in the signal handling
code
- Fix a comment typo
* tag 'riscv-for-linus-6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: compat: fix COMPAT_UTS_MACHINE definition
errata/sifive: remove unreliable warn_miss_errata
riscv: fix minor typo in syscall.h comment
riscv: signal: fix some warnings reported by sparse
Linus Torvalds [Sat, 31 Jan 2026 00:15:59 +0000 (16:15 -0800)]
Merge tag 'rust-fixes-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull Rust fixes from Miguel Ojeda:
"Toolchain and infrastructure:
- Trigger rebuilds of the newly added 'proc-macro2' crate (and its
dependencies) when the Rust compiler version changes
- Fix error in '.rsi' targets (macro expanding single targets) under
'O=' pointing to an external (not subdir) folder
- Fix off-by-one line number in 'rustdoc' KUnit tests
- Add '-fdiagnostics-show-context' to GCC flags skipped by 'bindgen'
- Clean objtool warning by adding one more 'noreturn' function
- Clean 'libpin_init_internal.{so,dylib}' in 'mrproper'
'kernel' crate:
- Fix build error when using expressions in formatting arguments
- Mark 'num::Bounded::__new()' as unsafe and clean documentation
accordingly
- Always inline functions using 'build_assert' with arguments
- Fix 'rusttest' build error providing the right 'isize_atomic_repr'
type for the host
'macros' crate:
- Fix 'rusttest' build error by ignoring example
rust-analyzer:
- Remove assertion that was not true for distributions like NixOS
- Add missing dependency edges and fix editions for 'quote' and
sysroot crates to provide correct IDE support
DRM Tyr:
- Fix build error by adding missing dependency on 'CONFIG_COMMON_CLK'
Plus clean a few typos in docs and comments"
* tag 'rust-fixes-6.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (28 commits)
rust: num: bounded: clean __new documentation and comments
scripts: generate_rust_analyzer: fix resolution of #[pin_data] macros
drm/tyr: depend on `COMMON_CLK` to fix build error
rust: sync: atomic: Provide stub for `rusttest` 32-bit hosts
kbuild: rust: clean libpin_init_internal in mrproper
rust: proc-macro2: rebuild if the version text changes
rust: num: bounded: add missing comment for always inlined function
rust: sync: refcount: always inline functions using build_assert with arguments
rust: bits: always inline functions using build_assert with arguments
scripts: generate_rust_analyzer: compile sysroot with correct edition
scripts: generate_rust_analyzer: compile quote with correct edition
scripts: generate_rust_analyzer: quote: treat `core` and `std` as dependencies
scripts: generate_rust_analyzer: syn: treat `std` as a dependency
scripts: generate_rust_analyzer: remove sysroot assertion
rust: kbuild: give `--config-path` to `rustfmt` in `.rsi` target
scripts: generate_rust_analyzer: Add pin_init_internal deps
scripts: generate_rust_analyzer: Add pin_init -> compiler_builtins dep
scripts: generate_rust_analyzer: Add compiler_builtins -> core dep
rust: macros: ignore example with module parameters
rust: num: bounded: mark __new as unsafe
...
Steven Rostedt [Thu, 29 Jan 2026 15:28:21 +0000 (10:28 -0500)]
perf: sched: Fix perf crash with new is_user_task() helper
In order to do a user space stacktrace the current task needs to be a user
task that has executed in user space. It use to be possible to test if a
task is a user task or not by simply checking the task_struct mm field. If
it was non NULL, it was a user task and if not it was a kernel task.
But things have changed over time, and some kernel tasks now have their
own mm field.
An idea was made to instead test PF_KTHREAD and two functions were used to
wrap this check in case it became more complex to test if a task was a
user task or not[1]. But this was rejected and the C code simply checked
the PF_KTHREAD directly.
It was later found that not all kernel threads set PF_KTHREAD. The io-uring
helpers instead set PF_USER_WORKER and this needed to be added as well.
But checking the flags is still not enough. There's a very small window
when a task exits that it frees its mm field and it is set back to NULL.
If perf were to trigger at this moment, the flags test would say its a
user space task but when perf would read the mm field it would crash with
at NULL pointer dereference.
Now there are flags that can be used to test if a task is exiting, but
they are set in areas that perf may still want to profile the user space
task (to see where it exited). The only real test is to check both the
flags and the mm field.
Instead of making this modification in every location, create a new
is_user_task() helper function that does all the tests needed to know if
it is safe to read the user space memory or not.
Peter Zijlstra [Fri, 30 Jan 2026 12:41:00 +0000 (13:41 +0100)]
sched/deadline: Fix 'stuck' dl_server
Andrea reported the dl_server getting stuck for him. He tracked it
down to a state where dl_server_start() saw dl_defer_running==1, but
the dl_server's job is no longer valid at the time of
dl_server_start().
In the state diagram this corresponds to [4] D->A (or dl_server_stop()
due to no more runnable tasks) followed by [1], which in case of a
lapsed deadline must then be A->B.
Now our A has dl_defer_running==1, while B demands
dl_defer_running==0, therefore it must get cleared when the CBS wakeup
rules demand a replenish.
KVM: x86: Explicitly configure supported XSS from {svm,vmx}_set_cpu_caps()
Explicitly configure KVM's supported XSS as part of each vendor's setup
flow to fix a bug where clearing SHSTK and IBT in kvm_cpu_caps, e.g. due
to lack of CET XFEATURE support, makes kvm-intel.ko unloadable when nested
VMX is enabled, i.e. when nested=1. The late clearing results in
nested_vmx_setup_{entry,exit}_ctls() clearing VM_{ENTRY,EXIT}_LOAD_CET_STATE
when nested_vmx_setup_ctls_msrs() runs during the CPU compatibility checks,
ultimately leading to a mismatched VMCS config due to the reference config
having the CET bits set, but every CPU's "local" config having the bits
cleared.
Note, kvm_caps.supported_{xcr0,xss} are unconditionally initialized by
kvm_x86_vendor_init(), before calling into vendor code, and not referenced
between ops->hardware_setup() and their current/old location.
Fixes: 69cc3e886582 ("KVM: x86: Add XSS support for CET_KERNEL and CET_USER") Cc: stable@vger.kernel.org Cc: Mathias Krause <minipli@grsecurity.net> Cc: John Allen <john.allen@amd.com> Cc: Rick Edgecombe <rick.p.edgecombe@intel.com> Cc: Chao Gao <chao.gao@intel.com> Cc: Binbin Wu <binbin.wu@linux.intel.com> Cc: Xiaoyao Li <xiaoyao.li@intel.com> Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com> Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com> Link: https://patch.msgid.link/20260128014310.3255561-2-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
* tag 'block-6.19-20260130' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
bcache: fix I/O accounting leak in detached_dev_do_request
bcache: remove dead code in detached_dev_do_request
nvme-pci: DMA unmap the correct regions in nvme_free_sgls
Revert "rnbd-clt: fix refcount underflow in device unmap path"
nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
Linus Torvalds [Fri, 30 Jan 2026 19:58:27 +0000 (11:58 -0800)]
Merge tag 'gpio-fixes-for-v6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
"Over the last week I received quite an unexpected (for rc7) number of
fixes but they are all pretty small and mostly limited to drivers:
- don't call into pinctrl when setting direction in gpio-rockchip as
it's not needed and may trigger locking context errors
- change spinlock to raw_spinlock in gpio-sprd
- fix a use-after-free bug in gpio-virtuser
- don't register a driver from another driver's probe() in gpio-omap
- fix int width problems in GPIO ACPI code
- fix interrupt-to-pin mapping in gpio-brcmstb
- mask interrupts in irq shutdown in gpio-pca953x"
* tag 'gpio-fixes-for-v6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpiolib: acpi: Fix potential out-of-boundary left shift
gpio: brcmstb: correct hwirq to bank map
gpio: omap: do not register driver in probe()
gpio: pca953x: mask interrupts in irq shutdown
gpio: virtuser: fix UAF in configfs release path
gpiolib: acpi: use BIT_ULL() for u64 mask in address space handler
gpio: sprd: Change sprd_gpio lock to raw_spin_lock
gpio: rockchip: Stop calling pinctrl for set_direction
Linus Torvalds [Fri, 30 Jan 2026 07:20:51 +0000 (23:20 -0800)]
Merge tag 'drm-fixes-2026-01-30' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Seems to be a bit quieter this week, mostly xe and amdgpu, with msm
and imx fixes and one WARN_ON from user blocked. Nothing of note
outstanding either.
uapi:
- Fix a WARN_ON() when passing an invalid handle to
drm_gem_change_handle_ioctl()
xe:
- Skip address copy for sync-only execs
- Fix a WA
- Derive mem_copy cap from graphics version
- Fix is_bound() pci_dev lifetime
- xe nvm cleanup fixes
imx/tve:
- drop ddc device reference when unloading"
* tag 'drm-fixes-2026-01-30' of https://gitlab.freedesktop.org/drm/kernel: (21 commits)
drm/xe/nvm: Fix double-free on aux add failure
drm/xe/nvm: Manage nvm aux cleanup with devres
drm/amdgpu/gfx12: adjust KGQ reset sequence
drm/amdgpu/gfx11: adjust KGQ reset sequence
drm/amdgpu/gfx12: fix wptr reset in KGQ init
drm/amdgpu/gfx11: fix wptr reset in KGQ init
drm/amdgpu/gfx10: fix wptr reset in KGQ init
drm/xe/configfs: Fix is_bound() pci_dev lifetime
drm/amdgpu: Fix cond_exec handling in amdgpu_ib_schedule()
drm/amdgpu/soc21: fix xclk for APUs
drm/amd/display: Clear HDMI HPD pending work only if it is enabled
drm/imx/tve: fix probe device leak
drm/amd/pm: fix race in power state check before mutex lock
drm/amdgpu: fix NULL pointer dereference in amdgpu_gmc_filter_faults_remove
drm/amd/pm: fix smu v14 soft clock frequency setting issue
drm/amd/pm: fix smu v13 soft clock frequency setting issue
drm/xe: derive mem copy capability from graphics version
drm/xe/xelp: Fix Wa_18022495364
drm/xe: Skip address copy for sync-only execs
drm: Do not allow userspace to trigger kernel warnings in drm_gem_change_handle_ioctl()
...
Dave Airlie [Fri, 30 Jan 2026 01:47:01 +0000 (11:47 +1000)]
Merge tag 'drm-misc-fixes-2026-01-29' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes
drm-misc-fixes for v6.19-rc8:
- Fix a WARN_ON() when passing an invalid handle to
drm_gem_change_handle_ioctl()
- drop ddc device reference when unloading in imx/tve.
Linus Torvalds [Thu, 29 Jan 2026 23:20:22 +0000 (15:20 -0800)]
Merge tag 'pm-6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"This adds a terminating NULL entry to an of_device_id table in the
qcom-nvmem cpufreq driver to avoid out-of-bounds access (Pei Xiao)"
* tag 'pm-6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: qcom-nvmem: add sentinel to qcom_cpufreq_ipq806x_match_list
Linus Torvalds [Thu, 29 Jan 2026 22:08:36 +0000 (14:08 -0800)]
Merge tag 'mtd/fixes-for-6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull MTD fix from Miquel Raynal:
"A single late MTD fix, which reverts a fix that turned out to be
incorrect.
The observations of the committer was that the number of IDs to be
used to probe a chip was incorrect. It happened to be a limitation of
his controller, not a chip issue. Restore the chip description, a
solution must be found somewhere else"
* tag 'mtd/fixes-for-6.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
Revert "mtd: spinand: esmt: fix id code for F50D1G41LB"
Shuicheng Lin [Tue, 20 Jan 2026 18:32:42 +0000 (18:32 +0000)]
drm/xe/nvm: Fix double-free on aux add failure
After a successful auxiliary_device_init(), aux_dev->dev.release
(xe_nvm_release_dev()) is responsible for the kfree(nvm). When
there is failure with auxiliary_device_add(), driver will call
auxiliary_device_uninit(), which call put_device(). So that the
.release callback will be triggered to free the memory associated
with the auxiliary_device.
Move the kfree(nvm) into the auxiliary_device_init() failure path
and remove the err goto path to fix below error.
"
[ 13.232905] ==================================================================
[ 13.232911] BUG: KASAN: double-free in xe_nvm_init+0x751/0xf10 [xe]
[ 13.233112] Free of addr ffff888120635000 by task systemd-udevd/273
Shuicheng Lin [Tue, 20 Jan 2026 18:32:41 +0000 (18:32 +0000)]
drm/xe/nvm: Manage nvm aux cleanup with devres
Move nvm teardown to a devm-managed action registered from xe_nvm_init().
This ensures the auxiliary NVM device is deleted on probe failure and
device detach without requiring explicit calls from remove paths.
As part of this, drop xe_nvm_fini() from xe_device_remove() and from the
survivability sysfs teardown, and remove the public xe_nvm_fini() API from
the header.
Linus Torvalds [Thu, 29 Jan 2026 19:09:13 +0000 (11:09 -0800)]
Merge tag 'mm-hotfixes-stable-2026-01-29-09-41' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"16 hotfixes. 9 are cc:stable, 12 are for MM.
There's a patch series from Pratyush Yadav which fixes a few things in
the new-in-6.19 LUO memfd code.
Plus the usual shower of singletons - please see the changelogs for
details"
* tag 'mm-hotfixes-stable-2026-01-29-09-41' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
vmcoreinfo: make hwerr_data visible for debugging
mm/zone_device: reinitialize large zone device private folios
mm/mm_init: don't cond_resched() in deferred_init_memmap_chunk() if called from deferred_grow_zone()
mm/kfence: randomize the freelist on initialization
kho: kho_preserve_vmalloc(): don't return 0 when ENOMEM
kho: init alloc tags when restoring pages from reserved memory
mm: memfd_luo: restore and free memfd_luo_ser on failure
mm: memfd_luo: use memfd_alloc_file() instead of shmem_file_setup()
memfd: export alloc_file()
flex_proportions: make fprop_new_period() hardirq safe
mailmap: add entry for Viacheslav Bocharov
mm/memory-failure: teach kill_accessing_process to accept hugetlb tail page pfn
mm/memory-failure: fix missing ->mf_stats count in hugetlb poison
mm, swap: restore swap_space attr aviod kernel panic
mm/kasan: fix KASAN poisoning in vrealloc()
mm/shmem, swap: fix race of truncate and swap entry split
Paul Moore [Thu, 29 Jan 2026 18:31:56 +0000 (13:31 -0500)]
lsm: preserve /proc/sys/vm/mmap_min_addr when !CONFIG_SECURITY
While reworking the LSM initialization code the
/proc/sys/vm/mmap_min_addr handler was inadvertently caught up in the
change and the procfs entry wasn't setup when CONFIG_SECURITY was not
selected at kernel build time. This patch restores the previous behavior
and ensures that the procfs entry is setup regardless of the
CONFIG_SECURITY state.
Future work will improve upon this, likely by moving the procfs handler
into the mm subsystem, but this patch should resolve the immediate
regression.
Fixes: 4ab5efcc2829 ("lsm: consolidate all of the LSM framework initcalls") Reported-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Tested-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Reviewed-by: Kees Cook <kees@kernel.org> Signed-off-by: Paul Moore <paul@paul-moore.com>
Alex Deucher [Thu, 29 Jan 2026 04:05:50 +0000 (23:05 -0500)]
drm/amdgpu/gfx12: adjust KGQ reset sequence
Kernel gfx queues do not need to be reinitialized or
remapped after a reset. Align with gfx11.
v2: preserve init and remap for MMIO case.
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 0a6d6ed694d72b66b0ed7a483d5effa01acd3951) Cc: stable@vger.kernel.org
Linus Torvalds [Thu, 29 Jan 2026 17:07:17 +0000 (09:07 -0800)]
Merge tag 'for-6.19-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- fix leaked folio refcount on s390x when using hw zlib compression
acceleration
- remove own threshold from ->writepages() which could collide with
cgroup limits and lead to a deadlock when metadadata are not written
because the amount is under the internal limit
* tag 'for-6.19-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: zlib: fix the folio leak on S390 hardware acceleration
btrfs: do not strictly require dirty metadata threshold for metadata writepages
Jibin Zhang [Mon, 26 Jan 2026 15:21:11 +0000 (23:21 +0800)]
net: fix segmentation of forwarding fraglist GRO
This patch enhances GSO segment handling by properly checking
the SKB_GSO_DODGY flag for frag_list GSO packets, addressing
low throughput issues observed when a station accesses IPv4
servers via hotspots with an IPv6-only upstream interface.
Specifically, it fixes a bug in GSO segmentation when forwarding
GRO packets containing a frag_list. The function skb_segment_list
cannot correctly process GRO skbs that have been converted by XLAT,
since XLAT only translates the header of the head skb. Consequently,
skbs in the frag_list may remain untranslated, resulting in protocol
inconsistencies and reduced throughput.
To address this, the patch explicitly sets the SKB_GSO_DODGY flag
for GSO packets in XLAT's IPv4/IPv6 protocol translation helpers
(bpf_skb_proto_4_to_6 and bpf_skb_proto_6_to_4). This marks GSO
packets as potentially modified after protocol translation. As a
result, GSO segmentation will avoid using skb_segment_list and
instead falls back to skb_segment for packets with the SKB_GSO_DODGY
flag. This ensures that only safe and fully translated frag_list
packets are processed by skb_segment_list, resolving protocol
inconsistencies and improving throughput when forwarding GRO packets
converted by XLAT.
Paolo Abeni [Thu, 29 Jan 2026 12:21:35 +0000 (13:21 +0100)]
Merge tag 'wireless-2026-01-29' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless
Johannes Berg says:
====================
Just one fix, for a parsing error in mac80211 that might
result in a one byte out-of-bounds read.
* tag 'wireless-2026-01-29' of https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless:
wifi: mac80211: correctly decode TTLM with default link map
====================
Benjamin Berg [Thu, 29 Jan 2026 10:33:50 +0000 (11:33 +0100)]
wifi: mac80211: correctly decode TTLM with default link map
TID-To-Link Mapping (TTLM) elements do not contain any link mapping
presence indicator if a default mapping is used and parsing needs to be
skipped.
Note that access points should not explicitly report an advertised TTLM
with a default mapping as that is the implied mapping if the element is
not included, this is even the case when switching back to the default
mapping. However, mac80211 would incorrectly parse the frame and would
also read one byte beyond the end of the element.
Reported-by: Ruikai Peng <ruikai@pwno.io> Closes: https://lore.kernel.org/linux-wireless/CAFD3drMqc9YWvTCSHLyP89AOpBZsHdZ+pak6zVftYoZcUyF7gw@mail.gmail.com Fixes: 702e80470a33 ("wifi: mac80211: support handling of advertised TID-to-link mapping") Signed-off-by: Benjamin Berg <benjamin.berg@intel.com> Link: https://patch.msgid.link/20260129113349.d6b96f12c732.I69212a50f0f70db185edd3abefb6f04d3cb3e5ff@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
dma/pool: distinguish between missing and exhausted atomic pools
Currently, dma_alloc_from_pool() unconditionally warns and dumps a stack
trace when an allocation fails, with the message "Failed to get suitable
pool".
This conflates two distinct failure modes:
1. Configuration error: No atomic pool is available for the requested
DMA mask (a fundamental system setup issue)
2. Resource Exhaustion: A suitable pool exists but is currently full (a
recoverable runtime state)
This lack of distinction prevents drivers from using __GFP_NOWARN to
suppress error messages during temporary pressure spikes, such as when
awaiting synchronous reclaim of descriptors.
Refactor the error handling to distinguish these cases:
- If no suitable pool is found, keep the unconditional WARN regarding
the missing pool.
- If a pool was found but is exhausted, respect __GFP_NOWARN and update
the warning message to explicitly state "DMA pool exhausted".
Fixes: 9420139f516d ("dma-pool: fix coherent pool allocations for IOMMU mappings") Signed-off-by: Sai Sree Kartheek Adivi <s-adivi@ti.com> Reviewed-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://lore.kernel.org/r/20260128133554.3056582-1-s-adivi@ti.com
Arnd Bergmann [Thu, 29 Jan 2026 09:02:10 +0000 (10:02 +0100)]
Merge tag 'qcom-drivers-fixes-for-6.19' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/fixes
Qualcomm driver fix for v6.19
The changes to the logic in the Qualcomm SMEM driver for separating
"failed to probe" from "not yet probed", did not change the
qcom_smem_is_available() function, with the result that clients sees
SMEM as always available. Clients might then proceed to interact with
SMEM in codepaths that aren't suited to cope with -EPROBE_DEFER.
* tag 'qcom-drivers-fixes-for-6.19' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
soc: qcom: smem: fix qcom_smem_is_available and check if __smem is valid
Arnd Bergmann [Thu, 29 Jan 2026 09:00:44 +0000 (10:00 +0100)]
Merge tag 'imx-maintainers-6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/fixes
i.MX MAINTAINERS changes for 6.20:
- Shawn Guo steps down and Frank Li steps up as i.MX platform
maintainer
* tag 'imx-maintainers-6.20' of https://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
MAINTAINERS: Replace Shawn with Frank as i.MX platform maintainer
====================
mptcp: avoid dup NL events and propagate error
Here are two fixes affecting the MPTCP Netlink events with their tests:
- Patches 1 & 2: a subflow closed NL event was visible multiple times in
some specific conditions. A fix for v5.12.
- Patches 3 & 4: subflow closed NL events never contained the error
code, even when expected. A fix for v5.11.
Plus an extra fix:
- Patch 5: fix a false positive with the "signal addresses race test"
subtest when validating the MPTCP Join selftest on a v5.15.y stable
kernel.
====================
selftests: mptcp: join: fix local endp not being tracked
When running this mptcp_join.sh selftest on older kernel versions not
supporting local endpoints tracking, this test fails because 3 MP_JOIN
ACKs have been received, while only 2 were expected.
It is not clear why only 2 MP_JOIN ACKs were expected on old kernel
versions, while 3 MP_JOIN SYN and SYN+ACK were expected. When testing on
the v5.15.197 kernel, 3 MP_JOIN ACKs are seen, which is also what is
expected in the selftests included in this kernel version, see commit f4480eaad489 ("selftests: mptcp: add missing join check").
Switch the expected MP_JOIN ACKs to 3. While at it, move this
chk_join_nr helper out of the special condition for older kernel
versions as it is now the same as with more recent ones. Also, invert
the condition to be more logical: what's expected on newer kernel
versions having such helper first.
Fixes: d4c81bbb8600 ("selftests: mptcp: join: support local endpoint being tracked or not") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau <martineau@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20260127-net-mptcp-dup-nl-events-v1-5-7f71e1bc4feb@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
selftests: mptcp: check subflow errors in close events
This validates the previous commit: subflow closed events should contain
an error field when a subflow got closed with an error, e.g. reset or
timeout.
For this test, the chk_evt_nr helper has been extended to check
attributes in the matched events.
In this test, the 2 subflow closed events should have an error.
The 'Fixes' tag here below is the same as the one from the previous
commit: this patch here is not fixing anything wrong in the selftests,
but it validates the previous fix for an issue introduced by this commit
ID.
Some subflow socket errors need to be reported to the MPTCP socket: the
initial subflow connect (MP_CAPABLE), and the ones from the fallback
sockets. The others are not propagated.
The issue is that sock_error() was used to retrieve the error, which was
also resetting the sk_err field. Because of that, when notifying the
userspace about subflow close events later on from the MPTCP worker, the
ssk->sk_err field was always 0.
Now, the error (sk_err) is only reset when propagating it to the msk.
selftests: mptcp: check no dup close events after error
This validates the previous commit: subflow closed events are re-sent
with less info when the initial subflow is disconnected after an error
and each time a subflow is closed after that.
In this new test, the userspace PM is involved because that's how it was
discovered, but it is not specific to it. The initial subflow is
terminated with a RESET, and that will cause the subflow disconnect.
Then, a new subflow is initiated, but also got rejected, which cause a
second subflow closed event, but not a third one.
While at it, in case of failure to get the expected amount of events,
the events are printed.
The 'Fixes' tag here below is the same as the one from the previous
commit: this patch here is not fixing anything wrong in the selftests,
but it validates the previous fix for an issue introduced by this commit
ID.
mptcp: avoid dup SUB_CLOSED events after disconnect
In case of subflow disconnect(), which can also happen with the first
subflow in case of errors like timeout or reset, mptcp_subflow_ctx_reset
will reset most fields from the mptcp_subflow_context structure,
including close_event_done. Then, when another subflow is closed, yet
another SUB_CLOSED event for the disconnected initial subflow is sent.
Because of the previous reset, there are no source address and
destination port.
A solution is then to also check the subflow's local id: it shouldn't be
negative anyway.
Another solution would be not to reset subflow->close_event_done at
disconnect time, but when reused. But then, probably the whole reset
could be done when being reused. Let's not change this logic, similar
to TCP with tcp_disconnect().
Jianbo Liu [Tue, 27 Jan 2026 08:52:41 +0000 (10:52 +0200)]
net/mlx5e: Skip ESN replay window setup for IPsec crypto offload
Commit a5e400a985df ("net/mlx5e: Honor user choice of IPsec replay
window size") introduced logic to setup the ESN replay window size.
This logic is only valid for packet offload.
However, the check to skip this block only covered outbound offloads.
It was not skipped for crypto offload, causing it to fall through to
the new switch statement and trigger its WARN_ON default case (for
instance, if a window larger than 256 bits was configured).
Fix this by amending the condition to also skip the replay window
setup if the offload type is not XFRM_DEV_OFFLOAD_PACKET.
Fixes: a5e400a985df ("net/mlx5e: Honor user choice of IPsec replay window size") Signed-off-by: Jianbo Liu <jianbol@nvidia.com> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Link: https://patch.msgid.link/1769503961-124173-5-git-send-email-tariqt@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Parav Pandit [Tue, 27 Jan 2026 08:52:40 +0000 (10:52 +0200)]
net/mlx5: Fix vhca_id access call trace use before alloc
HCA CAP structure is allocated in mlx5_hca_caps_alloc().
mlx5_mdev_init()
mlx5_hca_caps_alloc()
And HCA CAP is read from the device in mlx5_init_one().
The vhca_id's debugfs file is published even before above two
operations are done.
Due to this when user reads the vhca id before the initialization,
following call trace is observed.
Fix this by deferring debugfs publication until the HCA CAP is
allocated and read from the device.
Shay Drory [Tue, 27 Jan 2026 08:52:38 +0000 (10:52 +0200)]
net/mlx5: fs, Fix inverted cap check in tx flow table root disconnect
The capability check for reset_root_to_default was inverted, causing
the function to return -EOPNOTSUPP when the capability IS supported,
rather than when it is NOT supported.
Fix the capability check condition.
Fixes: 3c9c34c32bc6 ("net/mlx5: fs, Command to control TX flow table root") Signed-off-by: Shay Drory <shayd@nvidia.com> Reviewed-by: Mark Bloch <mbloch@nvidia.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> Link: https://patch.msgid.link/1769503961-124173-2-git-send-email-tariqt@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Wei Fang [Mon, 26 Jan 2026 08:15:44 +0000 (16:15 +0800)]
net: phy: micrel: fix clk warning when removing the driver
Since the commit 25c6a5ab151f ("net: phy: micrel: Dynamically control
external clock of KSZ PHY"), the clock of Micrel PHY has been enabled
by phy_driver::resume() and disabled by phy_driver::suspend(). However,
devm_clk_get_optional_enabled() is used in kszphy_probe(), so the clock
will automatically be disabled when the device is unbound from the bus.
Therefore, this could cause the clock to be disabled twice, resulting
in clk driver warnings.
For example, this issue can be reproduced on i.MX6ULL platform, and we
can see the following logs when removing the FEC MAC drivers.
$ echo 2188000.ethernet > /sys/bus/platform/drivers/fec/unbind
$ echo 20b4000.ethernet > /sys/bus/platform/drivers/fec/unbind
[ 109.758207] ------------[ cut here ]------------
[ 109.758240] WARNING: drivers/clk/clk.c:1188 at clk_core_disable+0xb4/0xd0, CPU#0: sh/639
[ 109.771011] enet2_ref already disabled
[ 109.793359] Call trace:
[ 109.822006] clk_core_disable from clk_disable+0x28/0x34
[ 109.827340] clk_disable from clk_disable_unprepare+0xc/0x18
[ 109.833029] clk_disable_unprepare from devm_clk_release+0x1c/0x28
[ 109.839241] devm_clk_release from devres_release_all+0x98/0x100
[ 109.845278] devres_release_all from device_unbind_cleanup+0xc/0x70
[ 109.851571] device_unbind_cleanup from device_release_driver_internal+0x1a4/0x1f4
[ 109.859170] device_release_driver_internal from bus_remove_device+0xbc/0xe4
[ 109.866243] bus_remove_device from device_del+0x140/0x458
[ 109.871757] device_del from phy_mdio_device_remove+0xc/0x24
[ 109.877452] phy_mdio_device_remove from mdiobus_unregister+0x40/0xac
[ 109.883918] mdiobus_unregister from fec_enet_mii_remove+0x40/0x78
[ 109.890125] fec_enet_mii_remove from fec_drv_remove+0x4c/0x158
[ 109.896076] fec_drv_remove from device_release_driver_internal+0x17c/0x1f4
[ 109.962748] WARNING: drivers/clk/clk.c:1047 at clk_core_unprepare+0xfc/0x13c, CPU#0: sh/639
[ 109.975805] enet2_ref already unprepared
[ 110.002866] Call trace:
[ 110.031758] clk_core_unprepare from clk_unprepare+0x24/0x2c
[ 110.037440] clk_unprepare from devm_clk_release+0x1c/0x28
[ 110.042957] devm_clk_release from devres_release_all+0x98/0x100
[ 110.048989] devres_release_all from device_unbind_cleanup+0xc/0x70
[ 110.055280] device_unbind_cleanup from device_release_driver_internal+0x1a4/0x1f4
[ 110.062877] device_release_driver_internal from bus_remove_device+0xbc/0xe4
[ 110.069950] bus_remove_device from device_del+0x140/0x458
[ 110.075469] device_del from phy_mdio_device_remove+0xc/0x24
[ 110.081165] phy_mdio_device_remove from mdiobus_unregister+0x40/0xac
[ 110.087632] mdiobus_unregister from fec_enet_mii_remove+0x40/0x78
[ 110.093836] fec_enet_mii_remove from fec_drv_remove+0x4c/0x158
[ 110.099782] fec_drv_remove from device_release_driver_internal+0x17c/0x1f4
After analyzing the process of removing the FEC driver, as shown below,
it can be seen that the clock was disabled twice by the PHY driver.
fec_drv_remove()
--> fec_enet_close()
--> phy_stop()
--> phy_suspend()
--> kszphy_suspend() #1 The clock is disabled
--> fec_enet_mii_remove()
--> mdiobus_unregister()
--> phy_mdio_device_remove()
--> device_del()
--> devm_clk_release() #2 The clock is disabled again
Therefore, devm_clk_get_optional() is used to fix the above issue. And
to avoid the issue mentioned by the commit 985329462723 ("net: phy:
micrel: use devm_clk_get_optional_enabled for the rmii-ref clock"), the
clock is enabled by clk_prepare_enable() to get the correct clock rate.
Fixes: 25c6a5ab151f ("net: phy: micrel: Dynamically control external clock of KSZ PHY") Signed-off-by: Wei Fang <wei.fang@nxp.com> Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Link: https://patch.msgid.link/20260126081544.983517-1-wei.fang@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Daniel Zahka [Mon, 26 Jan 2026 19:38:17 +0000 (11:38 -0800)]
net/mlx5e: don't assume psp tx skbs are ipv6 csum handling
mlx5e_psp_handle_tx_skb() assumes skbs are ipv6 when doing a partial
TCP checksum with tso. Make correctly mlx5e_psp_handle_tx_skb() handle
ipv4 packets.
Jakub Kicinski [Thu, 29 Jan 2026 03:40:54 +0000 (19:40 -0800)]
Merge branch '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2026-01-27 (ixgbe, ice)
For ixgbe:
Kohei Enju adjusts the cleanup path on firmware error to resolve some
memory leaks and removes an instance of double init, free on ACI mutex.
For ice:
Aaron Ma adds NULL checks for q_vectors to avoid NULL pointer
dereference.
Jesse Brandeburg removes UDP checksum mismatch from being counted in Rx
errors.
* '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
ice: stop counting UDP csum mismatch as rx_errors
ice: Fix NULL pointer dereference in ice_vsi_set_napi_queues
ixgbe: don't initialize aci lock in ixgbe_recovery_probe()
ixgbe: fix memory leaks in the ixgbe_recovery_probe() path
====================
Martin Kaiser [Tue, 27 Jan 2026 10:19:23 +0000 (11:19 +0100)]
net: bridge: fix static key check
Fix the check if netfilter's static keys are available. netfilter defines
and exports static keys if CONFIG_JUMP_LABEL is enabled. (HAVE_JUMP_LABEL
is never defined.)
Fixes: 971502d77faa ("bridge: netfilter: unroll NF_HOOK helper in bridge input path") Signed-off-by: Martin Kaiser <martin@kaiser.cx> Reviewed-by: Florian Westphal <fw@strlen.de> Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org> Link: https://patch.msgid.link/20260127101925.1754425-1-martin@kaiser.cx Signed-off-by: Jakub Kicinski <kuba@kernel.org>
nfc: nci: Fix race between rfkill and nci_unregister_device().
syzbot reported the splat below [0] without a repro.
It indicates that struct nci_dev.cmd_wq had been destroyed before
nci_close_device() was called via rfkill.
nci_dev.cmd_wq is only destroyed in nci_unregister_device(), which
(I think) was called from virtual_ncidev_close() when syzbot close()d
an fd of virtual_ncidev.
The problem is that nci_unregister_device() destroys nci_dev.cmd_wq
first and then calls nfc_unregister_device(), which removes the
device from rfkill by rfkill_unregister().
So, the device is still visible via rfkill even after nci_dev.cmd_wq
is destroyed.
Let's unregister the device from rfkill first in nci_unregister_device().
Note that we cannot call nfc_unregister_device() before
nci_close_device() because
1) nfc_unregister_device() calls device_del() which frees
all memory allocated by devm_kzalloc() and linked to
ndev->conn_info_list
2) nci_rx_work() could try to queue nci_conn_info to
ndev->conn_info_list which could be leaked
Thus, nfc_unregister_device() is split into two functions so we
can remove rfkill interfaces only before nci_close_device().
Shida Zhang [Tue, 27 Jan 2026 08:21:12 +0000 (16:21 +0800)]
bcache: fix I/O accounting leak in detached_dev_do_request
When a bcache device is detached, discard requests are completed
immediately. However, the I/O accounting started in
cached_dev_make_request() is not ended, leading to 100% disk
utilization reports in iostat. Add the missing bio_end_io_acct() call.
Fixes: cafe56359144 ("bcache: A block layer cache") Signed-off-by: Shida Zhang <zhangshida@kylinos.cn> Acked-by: Coly Li <colyli@fnnas.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
When initializing the default cma region, the "cma=" kernel parameter
takes priority over a DT defined linux,cma-default region. Hence, give
the reserved_mem framework the ability to detect this so that the DT
defined cma region can skip initialization accordingly.
Signed-off-by: Oreoluwa Babatunde <oreoluwa.babatunde@oss.qualcomm.com> Tested-by: Joy Zou <joy.zou@nxp.com> Acked-by: Rob Herring (Arm) <robh@kernel.org> Fixes: 8a6e02d0c00e ("of: reserved_mem: Restructure how the reserved memory regions are processed") Fixes: 2c223f7239f3 ("of: reserved_mem: Restructure call site for dma_contiguous_early_fixup()") Link: https://lore.kernel.org/r/20251210002027.1171519-1-oreoluwa.babatunde@oss.qualcomm.com
[mszyprow: rebased onto v6.19-rc1, added fixes tags, added a stub for
cma_skip_dt_default_reserved_mem() if no CONFIG_DMA_CMA is set] Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Takashi Sakamoto [Tue, 27 Jan 2026 22:34:13 +0000 (07:34 +0900)]
firewire: core: fix race condition against transaction list
The list of transaction is enumerated without acquiring card lock when
processing AR response event. This causes a race condition bug when
processing AT request completion event concurrently.
This commit fixes the bug by put timer start for split transaction
expiration into the scope of lock. The value of jiffies in card structure
is referred before acquiring the lock.
Cc: stable@vger.kernel.org # v6.18 Fixes: b5725cfa4120 ("firewire: core: use spin lock specific to timer for split transaction") Reported-by: Andreas Persson <andreasp56@outlook.com> Closes: https://github.com/alsa-project/snd-firewire-ctl-services/issues/209 Tested-by: Andreas Persson <andreasp56@outlook.com> Link: https://lore.kernel.org/r/20260127223413.22265-1-o-takashi@sakamocchi.jp Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Alex Deucher [Tue, 27 Jan 2026 04:44:45 +0000 (23:44 -0500)]
drm/amdgpu: Fix cond_exec handling in amdgpu_ib_schedule()
The EXEC_COUNT field must be > 0. In the gfx shadow
handling we always emit a cond_exec packet after the gfx_shadow
packet, but the EXEC_COUNT never gets patched. This leads
to a hang when we try and reset queues on gfx11 APUs.
Ivan Lipski [Fri, 16 Jan 2026 15:03:54 +0000 (10:03 -0500)]
drm/amd/display: Clear HDMI HPD pending work only if it is enabled
[Why&How]
On amdgpu_dm_connector_destroy(), the driver attempts to cancel pending
HDMI HPD work without checking if the HDMI HPD is enabled.
Added a check that it is enabled before clearing it.
Fixes: 6a681cd90345 ("drm/amd/display: Add an hdmi_hpd_debounce_delay_ms module") Signed-off-by: Ivan Lipski <ivan.lipski@amd.com> Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 17b2c526fd8026d8e0f4c0e7f94fc517e3901589)
* tag 'nvme-6.19-2026-01-28' of git://git.infradead.org/nvme:
nvme-pci: DMA unmap the correct regions in nvme_free_sgls
nvmet: fix race in nvmet_bio_done() leading to NULL pointer dereference
KMSAN reported an uninitialized value when batch_add_pfn_num() reads
batch->kind. This occurs because batch_clear() does not initialize the
kind field.
When batch_add_pfn_num() checks "if (batch->kind != kind)", it reads this
uninitialized value, triggering KMSAN warnings. However the algorithm is
fine with any value in kind at this point as the batch is always empty and
it always corrects kind if wrong.
Initialize batch->kind to zero in batch_clear() to silence the KMSAN
warning.
Linus Torvalds [Wed, 28 Jan 2026 16:03:11 +0000 (08:03 -0800)]
Merge tag 'pinctrl-v6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
- Mark the Meson GPIO controller as sleeping to avoid a
context splat
- Fix up the I2S2 and SWR TX group settings in the
Qualcomm SM8350 LPASS pin controller, and implement the
proper .get_direction() callback
- Fix a pin typo in the TG1520 pin controller
- Fix a group name in the Marvell armada 3710 XB pin
controller that got mangled in a DT schema rewrite
* tag 'pinctrl-v6.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
dt-bindings: pinctrl: marvell,armada3710-xb-pinctrl: fix 'usb32_drvvbus0' group name
pinctrl: lpass-lpi: implement .get_direction() for the GPIO driver
pinctrl: th1520: Fix typo
pinctrl: qcom: sm8350-lpass-lpi: Merge with SC7280 to fix I2S2 and SWR TX pins
pinctrl: meson: mark the GPIO controller as sleeping
soc: qcom: smem: fix qcom_smem_is_available and check if __smem is valid
Commit 7a94d5f31b54 ("soc: qcom: smem: better track SMEM uninitialized
state") changed the usage of __smem and init now as an error pointer
instead of NULL.
qcom_smem_is_available() wasn't updated to reflect this change and also
.qcom_smem_remove doesn't reset it on module exit.
Update both entry to reflect new handling of __smem.
Fixes: 7a94d5f31b54 ("soc: qcom: smem: better track SMEM uninitialized state") Reported-by: Dan Carpenter <dan.carpenter@linaro.org> Closes: https://lore.kernel.org/all/aSAnR3ECa04CoPqp@stanley.mountain/ Signed-off-by: Christian Marangi <ansuelsmth@gmail.com> Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Link: https://lore.kernel.org/r/20251122185002.26524-1-ansuelsmth@gmail.com Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Roger Pau Monne [Tue, 27 Jan 2026 19:59:06 +0000 (20:59 +0100)]
nvme-pci: DMA unmap the correct regions in nvme_free_sgls
The call to nvme_free_sgls() in nvme_unmap_data() has the sg_list and sge
parameters swapped. This wasn't noticed by the compiler because both share
the same type. On a Xen PV hardware domain, and possibly any other
architectures that takes that path, this leads to corruption of the NVMe
contents.
Fixes: f0887e2a52d4 ("nvme-pci: create common sgl unmapping helper") Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Signed-off-by: Keith Busch <kbusch@kernel.org>
Andy Shevchenko [Wed, 28 Jan 2026 09:58:54 +0000 (10:58 +0100)]
gpiolib: acpi: Fix potential out-of-boundary left shift
GPIO Address Space handler gets a pointer to the in or out value.
This value is supposed to be at least 64-bit, but it's not limited
to be exactly 64-bit. When ACPI tables are being parsed, for
the bigger Connection():s ACPICA creates a Buffer instead of regular
Integer object. The Buffer exists as long as Namespace holds
the certain Connection(). Hence we can access the necessary bits
without worrying. On the other hand, the left shift, used in
the code, is limited by 31 (on 32-bit platforms) and otherwise
considered to be Undefined Behaviour. Also the code uses only
the first 64-bit word for the value, and anything bigger than 63
will be also subject to UB. Fix all this by modifying the code
to correctly set or clear the respective bit in the bitmap constructed
of 64-bit words.
Fixes: 59084c564c41 ("gpiolib: acpi: use BIT_ULL() for u64 mask in address space handler") Fixes: 2c4d00cb8fc5 ("gpiolib: acpi: Use BIT() macro to increase readability") Cc: stable@vger.kernel.org Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://patch.msgid.link/20260128095918.4157491-1-andriy.shevchenko@linux.intel.com Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Jason Gunthorpe [Sat, 24 Jan 2026 21:00:21 +0000 (17:00 -0400)]
iommupt: Only cache flush memory changed by unmap
The cache flush was happening on every level across the whole range of
iteration, even if no leafs or tables were cleared. Instead flush only the
sub range that was actually written.
Overflushing isn't a correctness problem but it does impact the
performance of unmap.
After this series the performance compared to the original VT-d
implementation with cache flushing turned on is:
Fixes: efa03dab7ce4 ("iommupt: Flush the CPU cache after any writes to the page table") Reported-by: Francois Dugast <francois.dugast@intel.com> Closes: https://lore.kernel.org/all/20260121130233.257428-1-francois.dugast@intel.com/ Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Tested-by: Francois Dugast <francois.dugast@intel.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
In a few places in the Classmate laptop driver, code using the accel
object may run before that object's address is stored in the driver
data of the input device using it.
For example, cmpc_accel_sensitivity_store_v4() is the "show" method
of cmpc_accel_sensitivity_attr_v4 which is added in cmpc_accel_add_v4(),
before calling dev_set_drvdata() for inputdev->dev. If the sysfs
attribute is accessed prematurely, the dev_get_drvdata(&inputdev->dev)
call in in cmpc_accel_sensitivity_store_v4() returns NULL which
leads to a NULL pointer dereference going forward.
Moreover, sysfs attributes using the input device are added before
initializing that device by cmpc_add_acpi_notify_device() and if one
of them is accessed before running that function, a NULL pointer
dereference will occur.
For example, cmpc_accel_sensitivity_attr_v4 is added before calling
cmpc_add_acpi_notify_device() and if it is read prematurely, the
dev_get_drvdata(&acpi->dev) call in cmpc_accel_sensitivity_show_v4()
returns NULL which leads to a NULL pointer dereference going forward.
Fix this by adding NULL pointer checks in all of the relevant places.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Link: https://patch.msgid.link/12825381.O9o76ZdvQC@rafael.j.wysocki Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Ethan Zuo [Wed, 28 Jan 2026 06:37:51 +0000 (14:37 +0800)]
kbuild: Fix permissions of modules.builtin.modinfo
Currently, modules.builtin.modinfo is created with executable permissions
(0755). This is because after commit 39cfd5b12160 ("kbuild: extract
modules.builtin.modinfo from vmlinux.unstripped"), modules.builtin.modinfo
is extracted from vmlinux.unstripped using objcopy. When extracting
sections, objcopy inherits attributes from the source ELF file.
Since modules.builtin.modinfo is a data file and not an executable,
it should have regular file permissions (0644). The executable bit
can trigger warnings in Debian's Lintian tool.
Explicitly remove the executable bit after generation.
Commit a7c699d090a1 ("kbuild: rpm-pkg: build a debuginfo RPM") adjusted
the __spec_install_post macro to include __os_install_post, which runs
brp-strip. This ends up stripping module signatures, breaking loading
modules with lockdown enabled.
Undo most of the changes of the aforementioned debuginfo patch and
mirror commit 16c36f8864e3 ("kbuild: deb-pkg: use build ID instead of
debug link for dbg package") in kernel.spec to generate a functionally
equivalent debuginfo package while avoiding touching the modules after
they have already been signed during modules_install.
Johan Hovold [Thu, 30 Oct 2025 16:34:56 +0000 (17:34 +0100)]
drm/imx/tve: fix probe device leak
Make sure to drop the reference taken to the DDC device during probe on
probe failure (e.g. probe deferral) and on driver unbind.
Fixes: fcbc51e54d2a ("staging: drm/imx: Add support for Television Encoder (TVEv2)") Cc: stable@vger.kernel.org # 3.10 Cc: Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://patch.msgid.link/20251030163456.15807-1-johan@kernel.org Signed-off-by: Maxime Ripard <mripard@kernel.org>
projects / thirdparty / kernel / linux.git / log
