diff options
| author | Wen Yang <wen.yang@linux.dev> | 2024-08-19 17:59:45 +0300 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2024-08-26 23:33:50 +0300 |
| commit | 1bf8012fc6997f2117f6919369cde16659db60e0 (patch) | |
| tree | 67a16c006c01ccfd84766cf5ae3bb580ee2ea05b /include/linux | |
| parent | a7050ca724807a60e639da953a092cf8dc6d1bf7 (diff) | |
| download | linux-1bf8012fc6997f2117f6919369cde16659db60e0.tar.xz | |
pstore: replace spinlock_t by raw_spinlock_t
pstore_dump() is called when both preemption and local IRQ are disabled,
and a spinlock is obtained, which is problematic for the RT kernel because
in this configuration, spinlocks are sleep locks.
Replace the spinlock_t with raw_spinlock_t to avoid sleeping in atomic context.
Signed-off-by: Wen Yang <wen.yang@linux.dev>
Cc: Kees Cook <kees@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Guilherme G. Piccoli <gpiccoli@igalia.com>
Cc: linux-hardening@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Link: https://lore.kernel.org/r/20240819145945.61274-1-wen.yang@linux.dev
Signed-off-by: Kees Cook <kees@kernel.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/pstore.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/pstore.h b/include/linux/pstore.h index 638507a3c8ff..fed601053c51 100644 --- a/include/linux/pstore.h +++ b/include/linux/pstore.h @@ -182,7 +182,7 @@ struct pstore_info { struct module *owner; const char *name; - spinlock_t buf_lock; + raw_spinlock_t buf_lock; char *buf; size_t bufsize; |