diff options
| -rw-r--r-- | mm/slub.c | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/mm/slub.c b/mm/slub.c index c937233127e2..64c2b2bfbd79 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -2371,6 +2371,32 @@ const char *kmem_cache_name(struct kmem_cache *s) } EXPORT_SYMBOL(kmem_cache_name); +static void list_slab_objects(struct kmem_cache *s, struct page *page, + const char *text) +{ +#ifdef CONFIG_SLUB_DEBUG + void *addr = page_address(page); + void *p; + DECLARE_BITMAP(map, page->objects); + + bitmap_zero(map, page->objects); + slab_err(s, page, "%s", text); + slab_lock(page); + for_each_free_object(p, s, page->freelist) + set_bit(slab_index(p, s, addr), map); + + for_each_object(p, s, addr, page->objects) { + + if (!test_bit(slab_index(p, s, addr), map)) { + printk(KERN_ERR "INFO: Object 0x%p @offset=%tu\n", + p, p - addr); + print_tracking(s, p); + } + } + slab_unlock(page); +#endif +} + /* * Attempt to free all partial slabs on a node. */ @@ -2380,12 +2406,16 @@ static void free_partial(struct kmem_cache *s, struct kmem_cache_node *n) struct page *page, *h; spin_lock_irqsave(&n->list_lock, flags); - list_for_each_entry_safe(page, h, &n->partial, lru) + list_for_each_entry_safe(page, h, &n->partial, lru) { if (!page->inuse) { list_del(&page->lru); discard_slab(s, page); n->nr_partial--; + } else { + list_slab_objects(s, page, + "Objects remaining on kmem_cache_close()"); } + } spin_unlock_irqrestore(&n->list_lock, flags); } |