Commit 8a3d271d authored by Eric Dumazet's avatar Eric Dumazet Committed by Pekka Enberg
Browse files

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: default avatarChristoph Lameer <cl@linux-foundation.org>
Reported-by: default avatarZdenek Kabelac <zdenek.kabelac@gmail.com>
Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: default avatarPekka Enberg <penberg@cs.helsinki.fi>
parent 5788d8ad
......@@ -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;
}
......
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment