diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2013-01-09 23:34:08 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2013-08-13 16:09:05 -0400 |
| commit | d16ba57a0ae0aa7f7d3532c194c3bdd019e7672e (patch) | |
| tree | 1cd0356d97497a74aaac66b51e9961ae2936f515 | |
| parent | 02140307239f2593594044421488b8f746649cc9 (diff) | |
sched: Check for idle task in might_sleep()
Idle is not allowed to call sleeping functions ever!
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | kernel/sched/core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index acb69dcb6d10..1478d3b01fb1 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -7395,7 +7395,8 @@ void __might_sleep(const char *file, int line, int preempt_offset) static unsigned long prev_jiffy; /* ratelimiting */ rcu_sleep_check(); /* WARN_ON_ONCE() by default, no rate limit reqd. */ - if ((preempt_count_equals(preempt_offset) && !irqs_disabled()) || + if ((preempt_count_equals(preempt_offset) && !irqs_disabled() && + !is_idle_task(current)) || system_state != SYSTEM_RUNNING || oops_in_progress) return; if (time_before(jiffies, prev_jiffy + HZ) && prev_jiffy) |