sched/fair: Fix RCU stall upon -ENOMEM in sched_create_group()

[cascardo/linux.git] / kernel / sched / fair.c

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 6b99659..40667cb 100644 (file)
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -4005,6 +4005,10 @@ void __start_cfs_bandwidth(struct cfs_bandwidth *cfs_b, bool force)
 
 static void destroy_cfs_bandwidth(struct cfs_bandwidth *cfs_b)
 {
+       /* init_cfs_bandwidth() was not called */
+       if (!cfs_b->throttled_cfs_rq.next)
+               return;
+
        hrtimer_cancel(&cfs_b->period_timer);
        hrtimer_cancel(&cfs_b->slack_timer);
 }