commit 5f5221252624a2e1c37edaf30b60c6f96086cb2f
Author: Corcodel Marian <asd@marian1000.go.ro>
Date:   Wed Jul 6 10:55:30 2016 +0300

     Check for NULL pointer on update_cfs_shares.
    
     This run embedded as run  oneline.

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 6dd76e0..157468f 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2509,16 +2509,20 @@ static void reweight_entity(struct cfs_rq *cfs_rq, struct sched_entity *se,
 
 static inline int throttled_hierarchy(struct cfs_rq *cfs_rq);
 
-static void update_cfs_shares(struct cfs_rq *cfs_rq)
+static inline void update_cfs_shares(struct cfs_rq *cfs_rq)
 {
 	struct task_group *tg;
 	struct sched_entity *se;
 	long shares;
 
 	tg = cfs_rq->tg;
-	se = tg->se[cpu_of(rq_of(cfs_rq))];
-	if (!se || throttled_hierarchy(cfs_rq))
+	if (!tg->se[cpu_of(rq_of(cfs_rq))] ||
+		throttled_hierarchy(cfs_rq)) {
+		tg = NULL;
 		return;
+	}
+	
+	se = tg->se[cpu_of(rq_of(cfs_rq))];
 #ifndef CONFIG_SMP
 	if (likely(se->load.weight == tg->shares))
 		return;