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(parent: 3b44eda) | patch
ntp: Verify offset doesn't overflow in ntp_update_offset
authorSasha Levin <sasha.levin@oracle.com>
Thu, 3 Dec 2015 20:46:48 +0000 (15:46 -0500)
committerJohn Stultz <john.stultz@linaro.org>
Fri, 11 Dec 2015 06:41:05 +0000 (22:41 -0800)
commit52d189f1b38810b1b483d5bac2e4fa90b9afd372
tree756d5bcadf6596e5256b4b9a40c4c7a259934740tree | snapshot (tar.gz zip)
parent3b44edaaa1fffccea7edc018dd807581c97a6aeacommit | diff
ntp: Verify offset doesn't overflow in ntp_update_offset

We need to make sure that the offset is valid before manipulating it,
otherwise it might overflow on the multiplication.

Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
[jstultz: Reworked one of the checks so it makes more sense]
Signed-off-by: John Stultz <john.stultz@linaro.org>
kernel/time/ntp.c diff | blob | blame | history