Andrey Konovalov f215850ea0 UPSTREAM: 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>

(cherry picked from commit 06b1f85588948bd4c772845e5d6891b8f6082248)

Bug: 192912968
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: Ica725587c8c72e7b96ac3948799c77a48f27c2e2

2021-07-19 20:39:17 +00:00

2.4 KiB

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