diff options
Diffstat (limited to 'mm/kasan/generic.c')
| -rw-r--r-- | mm/kasan/generic.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/mm/kasan/generic.c b/mm/kasan/generic.c index 4c233b339301..1dd5a0f99372 100644 --- a/mm/kasan/generic.c +++ b/mm/kasan/generic.c @@ -348,11 +348,11 @@ void kasan_set_free_info(struct kmem_cache *cache, struct kasan_free_meta *free_meta; free_meta = kasan_get_free_meta(cache, object); - kasan_set_track(&free_meta->free_track, GFP_NOWAIT); + if (!free_meta) + return; - /* - * the object was freed and has free track set - */ + kasan_set_track(&free_meta->free_track, GFP_NOWAIT); + /* The object was freed and has free track set. */ *(u8 *)kasan_mem_to_shadow(object) = KASAN_KMALLOC_FREETRACK; } @@ -361,5 +361,6 @@ struct kasan_track *kasan_get_free_track(struct kmem_cache *cache, { if (*(u8 *)kasan_mem_to_shadow(object) != KASAN_KMALLOC_FREETRACK) return NULL; + /* Free meta must be present with KASAN_KMALLOC_FREETRACK. */ return &kasan_get_free_meta(cache, object)->free_track; } |