diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2013-01-09 23:34:08 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@rostedt.homelinux.com> | 2014-04-24 22:03:35 -0400 |
| commit | 29bbeaa5caf1a3333e9b998566b5b09c8a0a2016 (patch) | |
| tree | 61b81b65fb36c9324359902f48dafb7154c219f7 | |
| parent | 3c7a889c9cb3c54a77a96997c2f61bd63d464c59 (diff) | |
sched: Check for idle task in might_sleep()
Idle is not allowed to call sleeping functions ever!
Cc: stable-rt@vger.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| -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 c631d62608dc..9f9dae3e6c23 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -7591,7 +7591,8 @@ 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) |