]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
kasan: fix conflict with page poisoning
authorAndrey Konovalov <andreyknvl@google.com>
Fri, 9 Apr 2021 20:27:38 +0000 (13:27 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 9 Apr 2021 21:54:23 +0000 (14:54 -0700)
commit06b1f85588948bd4c772845e5d6891b8f6082248
treecfe4931b5eaa039a84cee63bb271ce21c1eb5b87
parentdf41872b68601059dd4a84858952dcae58acd331
kasan: fix conflict with page poisoning

When page poisoning is enabled, it accesses memory that is marked as
poisoned by KASAN, which leas to false-positive KASAN reports.

Suppress the reports by adding KASAN annotations to unpoison_page()
(poison_page() already has them).

Link: https://lkml.kernel.org/r/2dc799014d31ac13fd97bd906bad33e16376fc67.1617118501.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/page_poison.c