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| author | John Stultz <john.stultz@linaro.org> | 2012-08-22 00:30:48 (GMT) |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-08-22 08:42:13 (GMT) |
| commit | 6ea565a9be32a3c8d1092017686f183b6d8c4514 (patch) | |
| tree | 2db67e9659f91f11997998ba9845f4c7cb0d89ab /Documentation/DMA-API.txt | |
| parent | 85dc8f05c93c8105987de9d7e7cebf15a72ff4ec (diff) | |
| download | linux-6ea565a9be32a3c8d1092017686f183b6d8c4514.tar.xz | |
time: Avoid potential shift overflow with large shift values
Andreas Schwab noticed that the 1 << tk->shift could overflow if the
shift value was greater than 30, since 1 would be a 32bit long on
32bit architectures. This issue was introduced by 1e75fa8be (time:
Condense timekeeper.xtime into xtime_sec)
Use 1ULL instead to ensure we don't overflow on the shift.
Reported-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/1345595449-34965-4-git-send-email-john.stultz@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'Documentation/DMA-API.txt')
0 files changed, 0 insertions, 0 deletions