diff options
Diffstat (limited to 'mm/slab.c')
| -rw-r--r-- | mm/slab.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/mm/slab.c b/mm/slab.c index 390e249aaa8d..fa31cbb76124 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -3432,6 +3432,11 @@ static __always_inline void __cache_free(struct kmem_cache *cachep, void *objp, if (kasan_slab_free(cachep, objp, _RET_IP_)) return; + /* Use KCSAN to help debug racy use-after-free. */ + if (!(cachep->flags & SLAB_TYPESAFE_BY_RCU)) + __kcsan_check_access(objp, cachep->object_size, + KCSAN_ACCESS_WRITE | KCSAN_ACCESS_ASSERT); + ___cache_free(cachep, objp, caller); } |