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| author | Thomas Gleixner <tglx@linutronix.de> | 2013-01-09 23:34:08 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@rostedt.homelinux.com> | 2013-06-06 21:28:29 -0400 |
| commit | 8731aa72759ea34085f4ea1b7f3e8d83f7350433 (patch) | |
| tree | 74eabb1d8290c1af31438146ff73c18c2abfd260 | |
| parent | 36647604add9607c73032b477982307fde4f39ea (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 86256279c620..8307c03a5ed9 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -7785,7 +7785,8 @@ 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) |