diff options
| author | Alexander Potapenko <glider@google.com> | 2016-08-02 14:02:58 -0700 |
|---|---|---|
| committer | Paul Lawrence <paullawrence@google.com> | 2017-12-14 08:22:05 -0800 |
| commit | a9674f4e536ca25b6963afbc2894f97217c0bd46 (patch) | |
| tree | 9106871150ea404c6c061474cc0708fef6f4c497 /lib/stackdepot.c | |
| parent | 2771cfaf23478c20450a1cbc94fd263b04344d05 (diff) | |
UPSTREAM: 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>
Bug: 64145065
(cherry-picked from c3cee372282cb6bcdf19ac1457581d5dd5ecb554)
Change-Id: I8a647e5ee5d9494698aa2a31d50d587d6ff8b65c
Signed-off-by: Paul Lawrence <paullawrence@google.com>
Diffstat (limited to 'lib/stackdepot.c')
0 files changed, 0 insertions, 0 deletions