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| author | Li Jinyue <lijinyue@huawei.com> | 2017-12-14 17:04:54 +0800 |
|---|---|---|
| committer | Moyster <oysterized@gmail.com> | 2018-04-13 15:00:50 +0200 |
| commit | a133a03e3d624961c20dc891f29bea904753e780 (patch) | |
| tree | 2cbe71263cbca2d94bb640e7eab2a7df3364b13a /include/linux/stackprotector.h | |
| parent | ded5626f4f034352e4a452cae8ea1ae102deda9f (diff) | |
BACKPORT: futex: Prevent overflow by strengthen input validation
UBSAN reports signed integer overflow in kernel/futex.c:
UBSAN: Undefined behaviour in kernel/futex.c:2041:18
signed integer overflow:
0 - -2147483648 cannot be represented in type 'int'
Add a sanity check to catch negative values of nr_wake and nr_requeue.
Signed-off-by: Li Jinyue <lijinyue@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Erick Reyes <erickreyes@google.com>
Cc: peterz@infradead.org
Cc: dvhart@infradead.org
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/1513242294-31786-1-git-send-email-lijinyue@huawei.com
Cherry-picked from fbe0e839d1e22d88810f3ee3e2f1479be4c0aa4a
Change-Id: I954cc2848678318b60ec3f103d0c15f87b4605a4
Diffstat (limited to 'include/linux/stackprotector.h')
0 files changed, 0 insertions, 0 deletions