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| author | Alexander Potapenko <glider@google.com> | 2016-08-02 14:02:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-02 17:31:41 -0400 |
| commit | c3cee372282cb6bcdf19ac1457581d5dd5ecb554 (patch) | |
| tree | c69679c97a866019a5efde5078b85fe9e02cc54b /mm/migrate.c | |
| parent | 7e088978933ee186533355ae03a9dc1de99cf6c7 (diff) | |
| download | op-kernel-dev-c3cee372282cb6bcdf19ac1457581d5dd5ecb554.zip op-kernel-dev-c3cee372282cb6bcdf19ac1457581d5dd5ecb554.tar.gz | |
kasan: avoid overflowing quarantine size on low memory systems
If the total amount of memory assigned to quarantine is less than the
amount of memory assigned to per-cpu quarantines, |new_quarantine_size|
may overflow. Instead, set it to zero.
[akpm@linux-foundation.org: cleanup: use WARN_ONCE return value]
Link: http://lkml.kernel.org/r/1470063563-96266-1-git-send-email-glider@google.com
Fixes: 55834c59098d ("mm: kasan: initial memory quarantine implementation")
Signed-off-by: Alexander Potapenko <glider@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/migrate.c')
0 files changed, 0 insertions, 0 deletions
