diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2010-03-12 17:34:14 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2010-03-12 19:10:29 +0100 |
| commit | 80a05b9ffa7dc13f6693902dd8999a2b61a3a0d7 (patch) | |
| tree | 5612eeb26804b135de66779d1a00eaf35a4ceca1 /kernel/time/jiffies.c | |
| parent | timekeeping: Prevent oops when GENERIC_TIME=n (diff) | |
| download | linux-80a05b9ffa7dc13f6693902dd8999a2b61a3a0d7.tar.xz linux-80a05b9ffa7dc13f6693902dd8999a2b61a3a0d7.zip | |
clockevents: Sanitize min_delta_ns adjustment and prevent overflows
The current logic which handles clock events programming failures can
increase min_delta_ns unlimited and even can cause overflows.
Sanitize it by:
- prevent zero increase when min_delta_ns == 1
- limiting min_delta_ns to a jiffie
- bail out if the jiffie limit is hit
- add retries stats for /proc/timer_list so we can gather data
Reported-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time/jiffies.c')
0 files changed, 0 insertions, 0 deletions