diff options
Diffstat (limited to 'mm/kasan/kasan.h')
| -rw-r--r-- | mm/kasan/kasan.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h index 5e298e3ac909..69e4f5e58e33 100644 --- a/mm/kasan/kasan.h +++ b/mm/kasan/kasan.h @@ -6,6 +6,7 @@ #include <linux/kasan.h> #include <linux/kasan-tags.h> #include <linux/kfence.h> +#include <linux/spinlock.h> #include <linux/stackdepot.h> #if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS) @@ -249,6 +250,13 @@ struct kasan_global { struct kasan_alloc_meta { struct kasan_track alloc_track; /* Free track is stored in kasan_free_meta. */ + /* + * aux_lock protects aux_stack from accesses from concurrent + * kasan_record_aux_stack calls. It is a raw spinlock to avoid sleeping + * on RT kernels, as kasan_record_aux_stack_noalloc can be called from + * non-sleepable contexts. + */ + raw_spinlock_t aux_lock; depot_stack_handle_t aux_stack[2]; }; |