1 files changed, 3 insertions, 0 deletions

diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 9f06094e5275..0c718857176f 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -489,6 +489,9 @@ update_stats_wait_end(struct cfs_rq *cfs_rq, struct sched_entity *se)
 {
         unsigned long delta_fair;
 
+        if (unlikely(!se->wait_start_fair))
+                return;
+
         delta_fair = (unsigned long)min((u64)(2*sysctl_sched_runtime_limit),
                         (u64)(cfs_rq->fair_clock - se->wait_start_fair));