linux-toradex.git/kernel/kcsan, branch master Linux kernel for Apalis and Colibri modules kcsan: test: Do not count report printing time against test duration 2026-10-10T13:03:13+00:00 Marco Elver elver@google.com 2026-10-10T11:14:11+00:00 bd3cc16d1d7d584911f856adc458f242b1c7e85f Since commit d3539347022a ("serial: 8250: Switch to nbcon console, take 2"), several KCSAN tests fail with CONFIG_KCSAN_VERBOSE=y when using the 8250 console. With CONFIG_KCSAN_VERBOSE=y, the report prints the racing tasks' IRQ trace events via print_irqtrace_events(), which marks its output as a printk emergency section. Within an emergency section, printk() flushes all pending messages to nbcon consoles synchronously. With a slow console, the reporting thread can therefore stall for over a second while holding report_lock, i.e. before the remaining lines of the report are stored. The test, however, stops checking for reports after a fixed deadline, which is easily exceeded by a single slow report: | [ 5.360278] BUG: KCSAN: data-race in test_kernel_read / test_kernel_write | [ 5.360303] write to 0xffffffffab95a478 of 8 bytes by task 237 on cpu 7: | ... | [ 5.360411] irq event stamp: 23 | [ 6.059836] # test_basic: EXPECTATION FAILED at kernel/kcsan/kcsan_test.c:735 | ... | [ 6.616416] read to 0xffffffffab95a478 of 8 bytes by task 238 on cpu 9: Waiting for in-progress reports to complete is insufficient: a slow report that does not match the expected report still uses up the time to observe the expected report. Fix it by pausing the test's time budget while a test-related report is being printed, bounded by an upper limit to avoid stalling the test forever. Once a report completes, always check it at least once. Assisted-by: Antigravity Signed-off-by: Marco Elver <elver@google.com> 
Since commit d3539347022a ("serial: 8250: Switch to nbcon console, take
2"), several KCSAN tests fail with CONFIG_KCSAN_VERBOSE=y when using the
8250 console.

With CONFIG_KCSAN_VERBOSE=y, the report prints the racing tasks' IRQ
trace events via print_irqtrace_events(), which marks its output as a
printk emergency section. Within an emergency section, printk() flushes
all pending messages to nbcon consoles synchronously. With a slow
console, the reporting thread can therefore stall for over a second
while holding report_lock, i.e. before the remaining lines of the report
are stored.

The test, however, stops checking for reports after a fixed deadline,
which is easily exceeded by a single slow report:

| [    5.360278] BUG: KCSAN: data-race in test_kernel_read / test_kernel_write
| [    5.360303] write to 0xffffffffab95a478 of 8 bytes by task 237 on cpu 7:
| ...
| [    5.360411] irq event stamp: 23
| [    6.059836]     # test_basic: EXPECTATION FAILED at kernel/kcsan/kcsan_test.c:735
| ...
| [    6.616416] read to 0xffffffffab95a478 of 8 bytes by task 238 on cpu 9:

Waiting for in-progress reports to complete is insufficient: a slow
report that does not match the expected report still uses up the time
to observe the expected report.

Fix it by pausing the test's time budget while a test-related report is
being printed, bounded by an upper limit to avoid stalling the test
forever. Once a report completes, always check it at least once.

Assisted-by: Antigravity
Signed-off-by: Marco Elver <elver@google.com>
kcsan: Avoid division by zero in kcsan_prandom_u32_max() 2026-09-30T14:48:10+00:00 Andrea Parri parri.andrea@gmail.com 2026-09-30T13:38:30+00:00 99b6fcce87037cfb6b5e177848342e97f5141205 KCSAN's skip_watch, udelay_task and udelay_interrupt parameters can be changed at runtime through /sys/module/kcsan/parameters/, where 0 means watching every access or not delaying at all. With the default CONFIG_KCSAN_SKIP_WATCH_RANDOMIZE=y and CONFIG_KCSAN_DELAY_RANDOMIZE=y, writing 0 to any of them makes the next watchpoint setup divide by zero: # echo 0 > /sys/module/kcsan/parameters/udelay_task Oops: divide error: 0000 [#1] SMP NOPTI CPU: 0 UID: 0 PID: 93 Comm: sh Not tainted 7.3.0-rc5 #3 PREEMPT(lazy) RIP: 0010:kcsan_setup_watchpoint+0x1b5/0x410 Code: ... 65 89 05 ad 8d 98 02 d3 ee <f7> f6 29 d7 e8 22 0e 0f 01 ... RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 ... __show_trace_log_lvl+0x1bd/0x315 __die_body.cold+0x19/0x2b die+0x34/0x50 ... BUG: TASK stack guard page was hit at ffffd3ab001fbfe8 (...) reset_kcsan_skip() and delay_access() pass these values unchecked to kcsan_prandom_u32_max(), which returns "state % ep_ro". delay_access() halves the delay for compound and assert accesses, so udelay_interrupt=1 is enough there. The oops path runs instrumented code, which faults again until the stack overflows. With skip_watch=0 the guest hangs without printing anything. The division came in with commit 71a076f4a61a ("kcsan: Rewrite kcsan_prandom_u32_max() without prandom_u32_state()"). Before it, the helper scaled the random value with a multiply-shift, which yields 0 for ep_ro == 0. Go back to that via reciprocal_scale(). Tested in an x86-64 KCSAN guest with virtme-ng: after this patch, writing 0 to each parameter, or 1 to udelay_interrupt, no longer oopses. skip_watch=0 now watches every access, which is very slow with the default delays but completes when they are set to 0. Fixes: 71a076f4a61a ("kcsan: Rewrite kcsan_prandom_u32_max() without prandom_u32_state()") Cc: stable@vger.kernel.org Assisted-by: LLM Reviewed-by: Marco Elver <elver@google.com> Signed-off-by: Andrea Parri <parri.andrea@gmail.com> Signed-off-by: Marco Elver <elver@google.com> 
KCSAN's skip_watch, udelay_task and udelay_interrupt parameters can be
changed at runtime through /sys/module/kcsan/parameters/, where 0 means
watching every access or not delaying at all. With the default
CONFIG_KCSAN_SKIP_WATCH_RANDOMIZE=y and CONFIG_KCSAN_DELAY_RANDOMIZE=y,
writing 0 to any of them makes the next watchpoint setup divide by zero:

  # echo 0 > /sys/module/kcsan/parameters/udelay_task
  Oops: divide error: 0000 [#1] SMP NOPTI
  CPU: 0 UID: 0 PID: 93 Comm: sh Not tainted 7.3.0-rc5 #3 PREEMPT(lazy)
  RIP: 0010:kcsan_setup_watchpoint+0x1b5/0x410
  Code: ... 65 89 05 ad 8d 98 02 d3 ee <f7> f6 29 d7 e8 22 0e 0f 01 ...
  RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
  ...
   __show_trace_log_lvl+0x1bd/0x315
   __die_body.cold+0x19/0x2b
   die+0x34/0x50
  ...
  BUG: TASK stack guard page was hit at ffffd3ab001fbfe8 (...)

reset_kcsan_skip() and delay_access() pass these values unchecked to
kcsan_prandom_u32_max(), which returns "state % ep_ro". delay_access()
halves the delay for compound and assert accesses, so
udelay_interrupt=1 is enough there.

The oops path runs instrumented code, which faults again until the stack
overflows. With skip_watch=0 the guest hangs without printing anything.

The division came in with commit 71a076f4a61a ("kcsan: Rewrite
kcsan_prandom_u32_max() without prandom_u32_state()"). Before it, the
helper scaled the random value with a multiply-shift, which yields 0 for
ep_ro == 0. Go back to that via reciprocal_scale().

Tested in an x86-64 KCSAN guest with virtme-ng: after this patch,
writing 0 to each parameter, or 1 to udelay_interrupt, no longer
oopses. skip_watch=0 now watches every access, which is very slow with
the default delays but completes when they are set to 0.

Fixes: 71a076f4a61a ("kcsan: Rewrite kcsan_prandom_u32_max() without prandom_u32_state()")
Cc: stable@vger.kernel.org
Assisted-by: LLM
Reviewed-by: Marco Elver <elver@google.com>
Signed-off-by: Andrea Parri <parri.andrea@gmail.com>
Signed-off-by: Marco Elver <elver@google.com>
kcsan: avoid unintended access checking in NMIs 2026-07-20T16:18:37+00:00 Marco Elver elver@google.com 2026-07-20T16:08:22+00:00 a8488ecbd7ba44d65b912dfe88a73f438eba2447 If a watcher deliberately disables interrupts (either by user choice, or because we're dealing with a scoped reordered access) to avoid detecting any data races in interrupts, NMIs are still able to fire. When we set up a watchpoint on a scoped reordered access, we disabled interrupts because the same CPU cannot observe reordering of its own accesses. To ensure we observe no false positives from NMIs, disable access checking for interrupt contexts as well. Fixes: 69562e4983d9 ("kcsan: Add core support for a subset of weak memory modeling") Signed-off-by: Marco Elver <elver@google.com> 
If a watcher deliberately disables interrupts (either by user choice, or
because we're dealing with a scoped reordered access) to avoid detecting
any data races in interrupts, NMIs are still able to fire.

When we set up a watchpoint on a scoped reordered access, we disabled
interrupts because the same CPU cannot observe reordering of its own
accesses. To ensure we observe no false positives from NMIs, disable
access checking for interrupt contexts as well.

Fixes: 69562e4983d9 ("kcsan: Add core support for a subset of weak memory modeling")
Signed-off-by: Marco Elver <elver@google.com>
kcsan: test: Adjust "expect" allocation type for kmalloc_obj 2026-02-26T17:54:08+00:00 Kees Cook kees@kernel.org 2026-02-23T22:01:56+00:00 795469820c638b4449f3bb90ee5e98ebccfbc480 The call to kmalloc_obj(observed.lines) returns "char (*)[3][512]", a pointer to the whole 2D array. But "expect" wants to be "char (*)[512]", the decayed pointer type, as if it were observed.lines itself (though without the "3" bounds). This produces the following build error: ../kernel/kcsan/kcsan_test.c: In function '__report_matches': ../kernel/kcsan/kcsan_test.c:171:16: error: assignment to 'char (*)[512]' from incompatible pointer type 'char (*)[3][512]' [-Wincompatible-pointer-types] 171 | expect = kmalloc_obj(observed.lines); | ^ Instead of changing the "expect" type to "char (*)[3][512]" and requiring a dereference at each use (e.g. "(expect*)[0]"), just explicitly cast the return to the desired type. Note that I'm intentionally not switching back to byte-based "kmalloc" here because I cannot find a way for the Coccinelle script (which will be used going forward to catch future conversions) to exclude this case. Tested with: $ ./tools/testing/kunit/kunit.py run \ --kconfig_add CONFIG_DEBUG_KERNEL=y \ --kconfig_add CONFIG_KCSAN=y \ --kconfig_add CONFIG_KCSAN_KUNIT_TEST=y \ --arch=x86_64 --qemu_args '-smp 2' kcsan Reported-by: Nathan Chancellor <nathan@kernel.org> Fixes: 69050f8d6d07 ("treewide: Replace kmalloc with kmalloc_obj for non-scalar types") Signed-off-by: Kees Cook <kees@kernel.org> 
The call to kmalloc_obj(observed.lines) returns "char (*)[3][512]",
a pointer to the whole 2D array. But "expect" wants to be "char (*)[512]",
the decayed pointer type, as if it were observed.lines itself (though
without the "3" bounds). This produces the following build error:

../kernel/kcsan/kcsan_test.c: In function '__report_matches':
../kernel/kcsan/kcsan_test.c:171:16: error: assignment to 'char (*)[512]' from incompatible pointer type 'char (*)[3][512]'
[-Wincompatible-pointer-types]
  171 |         expect = kmalloc_obj(observed.lines);
      |                ^

Instead of changing the "expect" type to "char (*)[3][512]" and
requiring a dereference at each use (e.g. "(expect*)[0]"), just
explicitly cast the return to the desired type.

Note that I'm intentionally not switching back to byte-based "kmalloc"
here because I cannot find a way for the Coccinelle script (which will
be used going forward to catch future conversions) to exclude this case.

Tested with:

$ ./tools/testing/kunit/kunit.py run \
	--kconfig_add CONFIG_DEBUG_KERNEL=y \
	--kconfig_add CONFIG_KCSAN=y \
	--kconfig_add CONFIG_KCSAN_KUNIT_TEST=y \
	--arch=x86_64 --qemu_args '-smp 2' kcsan

Reported-by: Nathan Chancellor <nathan@kernel.org>
Fixes: 69050f8d6d07 ("treewide: Replace kmalloc with kmalloc_obj for non-scalar types")
Signed-off-by: Kees Cook <kees@kernel.org>
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-22T01:09:51+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-02-22T00:37:42+00:00 bf4afc53b77aeaa48b5409da5c8da6bb4eff7f43 This was done entirely with mindless brute force, using git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' | xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/' to convert the new alloc_obj() users that had a simple GFP_KERNEL argument to just drop that argument. Note that due to the extreme simplicity of the scripting, any slightly more complex cases spread over multiple lines would not be triggered: they definitely exist, but this covers the vast bulk of the cases, and the resulting diff is also then easier to check automatically. For the same reason the 'flex' versions will be done as a separate conversion. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
This was done entirely with mindless brute force, using

    git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
        xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'

to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.

Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.

For the same reason the 'flex' versions will be done as a separate
conversion.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21T09:02:28+00:00 Kees Cook kees@kernel.org 2026-02-21T07:49:23+00:00 69050f8d6d075dc01af7a5f2f550a8067510366f This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook <kees@kernel.org> 
This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:

Single allocations:	kmalloc(sizeof(TYPE), ...)
are replaced with:	kmalloc_obj(TYPE, ...)

Array allocations:	kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with:	kmalloc_objs(TYPE, COUNT, ...)

Flex array allocations:	kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with:	kmalloc_flex(*PTR, FAM, COUNT, ...)

(where TYPE may also be *VAR)

The resulting allocations no longer return "void *", instead returning
"TYPE *".

Signed-off-by: Kees Cook <kees@kernel.org>
Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm 2026-02-12T20:13:01+00:00 Linus Torvalds torvalds@linux-foundation.org 2026-02-12T20:13:01+00:00 136114e0abf03005e182d75761ab694648e6d388 Pull non-MM updates from Andrew Morton: - "ocfs2: give ocfs2 the ability to reclaim suballocator free bg" saves disk space by teaching ocfs2 to reclaim suballocator block group space (Heming Zhao) - "Add ARRAY_END(), and use it to fix off-by-one bugs" adds the ARRAY_END() macro and uses it in various places (Alejandro Colomar) - "vmcoreinfo: support VMCOREINFO_BYTES larger than PAGE_SIZE" makes the vmcore code future-safe, if VMCOREINFO_BYTES ever exceeds the page size (Pnina Feder) - "kallsyms: Prevent invalid access when showing module buildid" cleans up kallsyms code related to module buildid and fixes an invalid access crash when printing backtraces (Petr Mladek) - "Address page fault in ima_restore_measurement_list()" fixes a kexec-related crash that can occur when booting the second-stage kernel on x86 (Harshit Mogalapalli) - "kho: ABI headers and Documentation updates" updates the kexec handover ABI documentation (Mike Rapoport) - "Align atomic storage" adds the __aligned attribute to atomic_t and atomic64_t definitions to get natural alignment of both types on csky, m68k, microblaze, nios2, openrisc and sh (Finn Thain) - "kho: clean up page initialization logic" simplifies the page initialization logic in kho_restore_page() (Pratyush Yadav) - "Unload linux/kernel.h" moves several things out of kernel.h and into more appropriate places (Yury Norov) - "don't abuse task_struct.group_leader" removes the usage of ->group_leader when it is "obviously unnecessary" (Oleg Nesterov) - "list private v2 & luo flb" adds some infrastructure improvements to the live update orchestrator (Pasha Tatashin) * tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (107 commits) watchdog/hardlockup: simplify perf event probe and remove per-cpu dependency procfs: fix missing RCU protection when reading real_parent in do_task_stat() watchdog/softlockup: fix sample ring index wrap in need_counting_irqs() kcsan, compiler_types: avoid duplicate type issues in BPF Type Format kho: fix doc for kho_restore_pages() tests/liveupdate: add in-kernel liveupdate test liveupdate: luo_flb: introduce File-Lifecycle-Bound global state liveupdate: luo_file: Use private list list: add kunit test for private list primitives list: add primitives for private list manipulations delayacct: fix uapi timespec64 definition panic: add panic_force_cpu= parameter to redirect panic to a specific CPU netclassid: use thread_group_leader(p) in update_classid_task() RDMA/umem: don't abuse current->group_leader drm/pan*: don't abuse current->group_leader drm/amd: kill the outdated "Only the pthreads threading model is supported" checks drm/amdgpu: don't abuse current->group_leader android/binder: use same_thread_group(proc->tsk, current) in binder_mmap() android/binder: don't abuse current->group_leader kho: skip memoryless NUMA nodes when reserving scratch areas ... 
Pull non-MM updates from Andrew Morton:

 - "ocfs2: give ocfs2 the ability to reclaim suballocator free bg" saves
   disk space by teaching ocfs2 to reclaim suballocator block group
   space (Heming Zhao)

 - "Add ARRAY_END(), and use it to fix off-by-one bugs" adds the
   ARRAY_END() macro and uses it in various places (Alejandro Colomar)

 - "vmcoreinfo: support VMCOREINFO_BYTES larger than PAGE_SIZE" makes
   the vmcore code future-safe, if VMCOREINFO_BYTES ever exceeds the
   page size (Pnina Feder)

 - "kallsyms: Prevent invalid access when showing module buildid" cleans
   up kallsyms code related to module buildid and fixes an invalid
   access crash when printing backtraces (Petr Mladek)

 - "Address page fault in ima_restore_measurement_list()" fixes a
   kexec-related crash that can occur when booting the second-stage
   kernel on x86 (Harshit Mogalapalli)

 - "kho: ABI headers and Documentation updates" updates the kexec
   handover ABI documentation (Mike Rapoport)

 - "Align atomic storage" adds the __aligned attribute to atomic_t and
   atomic64_t definitions to get natural alignment of both types on
   csky, m68k, microblaze, nios2, openrisc and sh (Finn Thain)

 - "kho: clean up page initialization logic" simplifies the page
   initialization logic in kho_restore_page() (Pratyush Yadav)

 - "Unload linux/kernel.h" moves several things out of kernel.h and into
   more appropriate places (Yury Norov)

 - "don't abuse task_struct.group_leader" removes the usage of
   ->group_leader when it is "obviously unnecessary" (Oleg Nesterov)

 - "list private v2 & luo flb" adds some infrastructure improvements to
   the live update orchestrator (Pasha Tatashin)

* tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (107 commits)
  watchdog/hardlockup: simplify perf event probe and remove per-cpu dependency
  procfs: fix missing RCU protection when reading real_parent in do_task_stat()
  watchdog/softlockup: fix sample ring index wrap in need_counting_irqs()
  kcsan, compiler_types: avoid duplicate type issues in BPF Type Format
  kho: fix doc for kho_restore_pages()
  tests/liveupdate: add in-kernel liveupdate test
  liveupdate: luo_flb: introduce File-Lifecycle-Bound global state
  liveupdate: luo_file: Use private list
  list: add kunit test for private list primitives
  list: add primitives for private list manipulations
  delayacct: fix uapi timespec64 definition
  panic: add panic_force_cpu= parameter to redirect panic to a specific CPU
  netclassid: use thread_group_leader(p) in update_classid_task()
  RDMA/umem: don't abuse current->group_leader
  drm/pan*: don't abuse current->group_leader
  drm/amd: kill the outdated "Only the pthreads threading model is supported" checks
  drm/amdgpu: don't abuse current->group_leader
  android/binder: use same_thread_group(proc->tsk, current) in binder_mmap()
  android/binder: don't abuse current->group_leader
  kho: skip memoryless NUMA nodes when reserving scratch areas
  ...
kernel: fix off-by-one benign bugs 2026-01-21T03:44:19+00:00 Alejandro Colomar alx@kernel.org 2025-12-11T10:44:00+00:00 a9e5620c9a9e237b3344702dec0839b89159a060 We were wasting a byte due to an off-by-one bug. s[c]nprintf() doesn't write more than $2 bytes including the null byte, so trying to pass 'size-1' there is wasting one byte. This is essentially the same as the previous commit, in a different file. Link: https://lkml.kernel.org/r/b4a945a4d40b7104364244f616eb9fb9f1fa691f.1765449750.git.alx@kernel.org Signed-off-by: Alejandro Colomar <alx@kernel.org> Cc: Marco Elver <elver@google.com> Cc: Kees Cook <kees@kernel.org> Cc: Christopher Bazley <chris.bazley.wg14@gmail.com> Cc: Alexander Potapenko <glider@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Jann Horn <jannh@google.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Marco Elver <elver@google.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Maciej W. Rozycki <macro@orcam.me.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
We were wasting a byte due to an off-by-one bug.  s[c]nprintf() doesn't
write more than $2 bytes including the null byte, so trying to pass
'size-1' there is wasting one byte.

This is essentially the same as the previous commit, in a different
file.

Link: https://lkml.kernel.org/r/b4a945a4d40b7104364244f616eb9fb9f1fa691f.1765449750.git.alx@kernel.org
Signed-off-by: Alejandro Colomar <alx@kernel.org>
Cc: Marco Elver <elver@google.com>
Cc: Kees Cook <kees@kernel.org>
Cc: Christopher Bazley <chris.bazley.wg14@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Jann Horn <jannh@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Marco Elver <elver@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Maciej W. Rozycki <macro@orcam.me.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
kcsan: Enable context analysis 2026-01-05T15:43:35+00:00 Marco Elver elver@google.com 2025-12-19T15:40:19+00:00 0eaa911f890812a7868a44bbfd656636b2c7caf8 Enable context analysis for the KCSAN subsystem. Signed-off-by: Marco Elver <elver@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://patch.msgid.link/20251219154418.3592607-31-elver@google.com 
Enable context analysis for the KCSAN subsystem.

Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20251219154418.3592607-31-elver@google.com
Merge tag 'kcsan-20250929-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/melver/linux 2025-10-02T15:31:44+00:00 Linus Torvalds torvalds@linux-foundation.org 2025-10-02T15:31:44+00:00 d7a018eb761f44f1f48667540185d025354f33b6 Pull Kernel Concurrency Sanitizer (KCSAN) update from Marco Elver: - Replace deprecated strcpy() with strscpy() * tag 'kcsan-20250929-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/melver/linux: kcsan: test: Replace deprecated strcpy() with strscpy() 
Pull Kernel Concurrency Sanitizer (KCSAN) update from Marco Elver:

 - Replace deprecated strcpy() with strscpy()

* tag 'kcsan-20250929-v6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/melver/linux:
  kcsan: test: Replace deprecated strcpy() with strscpy()