alarmtimer: don't rate limit one-shot timers
Commitff86bf0c65
("alarmtimer: Rate limit periodic intervals") sets a minimum bound on the alarm timer interval. This minimum bound shouldn't be applied if the interval is 0. Otherwise, one-shot timers will be converted into periodic ones. Fixes:ff86bf0c65
("alarmtimer: Rate limit periodic intervals") Reported-by: Ben Fennema <fennema@google.com> Signed-off-by: Greg Hackmann <ghackmann@google.com> Cc: stable@vger.kernel.org Cc: John Stultz <john.stultz@linaro.org> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
919e481152
commit
91af5f04cd
|
@ -629,7 +629,8 @@ static int alarm_timer_set(struct k_itimer *timr, int flags,
|
|||
* Rate limit to the tick as a hot fix to prevent DOS. Will be
|
||||
* mopped up later.
|
||||
*/
|
||||
if (ktime_to_ns(timr->it.alarm.interval) < TICK_NSEC)
|
||||
if (timr->it.alarm.interval.tv64 &&
|
||||
ktime_to_ns(timr->it.alarm.interval) < TICK_NSEC)
|
||||
timr->it.alarm.interval = ktime_set(0, TICK_NSEC);
|
||||
|
||||
exp = timespec_to_ktime(new_setting->it_value);
|
||||
|
|
Loading…
Reference in a new issue