--- a/mm/slub.c~mm-slub-add-missing-annotation-for-get_map +++ a/mm/slub.c @@ -449,6 +449,7 @@ static DEFINE_SPINLOCK(object_map_lock); * not vanish from under us. */ static unsigned long *get_map(struct kmem_cache *s, struct page *page) + __acquires(&object_map_lock) { void *p; void *addr = page_address(page);