diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2025-10-28 09:56:38 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2025-10-28 09:58:57 +0100 |
| commit | b94d45b6bbb42571ec225d3be0e7457c8765a5b4 (patch) | |
| tree | ee940653d3b09bf80f9638d4dc711cc61d0076c5 | |
| parent | 37d0472c8ac441af8bc10fc4959ad9d62dd5fa4c (diff) | |
seqlock: Allow KASAN to fail optimizing
Some KASAN builds are failing to properly optimize this code --
luckily we don't care about core quality for KASAN builds, so just
exclude it.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Closes: https://lore.kernel.org/oe-kbuild-all/202510251641.idrNXhv5-lkp@intel.com/
| -rw-r--r-- | include/linux/seqlock.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h index b7bcc4111e90..a8a8661839b6 100644 --- a/include/linux/seqlock.h +++ b/include/linux/seqlock.h @@ -1234,11 +1234,14 @@ static inline void __scoped_seqlock_cleanup(struct ss_tmp *sst) extern void __scoped_seqlock_invalid_target(void); -#if defined(CONFIG_CC_IS_GCC) && CONFIG_GCC_VERSION < 90000 +#if (defined(CONFIG_CC_IS_GCC) && CONFIG_GCC_VERSION < 90000) || defined(CONFIG_KASAN) /* * For some reason some GCC-8 architectures (nios2, alpha) have trouble * determining that the ss_done state is impossible in __scoped_seqlock_next() * below. + * + * Similarly KASAN is known to confuse compilers enough to break this. But we + * don't care about code quality for KASAN builds anyway. */ static inline void __scoped_seqlock_bug(void) { } #else |