slub: fix slab_pad_check()

When SLAB_POISON is used and slab_pad_check() finds an overwrite of the
slab padding, we call restore_bytes() on the whole slab, not only
on the padding.

Acked-by: Christoph Lameer <[email protected]>
Reported-by: Zdenek Kabelac <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Signed-off-by: Pekka Enberg <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/mm/slub.c b/mm/slub.c
index d73f771d278f..b1cb2dfa109a 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -655,7 +655,7 @@ static int slab_pad_check(struct kmem_cache *s, struct page *page)
 	slab_err(s, page, "Padding overwritten. 0x%p-0x%p", fault, end - 1);
 	print_section("Padding", end - remainder, remainder);
 
-	restore_bytes(s, "slab padding", POISON_INUSE, start, end);
+	restore_bytes(s, "slab padding", POISON_INUSE, end - remainder, end);
 	return 0;
 }