tree fe1e5571a9eb8c4891eb2d3f634fa390f37c97d5
parent 94a1cb5ddee536b0920cb839f249b5cedbb58885
author Matthew Dawson <matthew@mjdsystems.ca> 1467009141 +0800
committer Alex Shi <alex.shi@linaro.org> 1467084910 +0800

mm/mempool: avoid KASAN marking mempool poison checks as use-after-free

commit 7640131032db9118a78af715ac77ba2debeeb17c upstream

When removing an element from the mempool, mark it as unpoisoned in KASAN
before verifying its contents for SLUB/SLAB debugging.  Otherwise KASAN
will flag the reads checking the element use-after-free writes as
use-after-free reads.

Signed-off-by: Matthew Dawson <matthew@mjdsystems.ca>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>