diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 1e1fe7f796e9..5143ea0cb55b 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -2712,6 +2712,20 @@ static inline void update_load_avg(struct sched_entity *se, int update_tg)
 
 static void attach_entity_load_avg(struct cfs_rq *cfs_rq, struct sched_entity *se)
 {
+	/*
+	 * If we got migrated (either between CPUs or between cgroups) we'll
+	 * have aged the average right before clearing @last_update_time.
+	 */
+	if (se->avg.last_update_time) {
+		__update_load_avg(cfs_rq->avg.last_update_time, cpu_of(rq_of(cfs_rq)),
+				  &se->avg, 0, 0, NULL);
+
+		/*
+		 * XXX: we could have just aged the entire load away if we've been
+		 * absent from the fair class for too long.
+		 */
+	}
+
 	se->avg.last_update_time = cfs_rq->avg.last_update_time;
 	cfs_rq->avg.load_avg += se->avg.load_avg;
 	cfs_rq->avg.load_sum += se->avg.load_sum;
@@ -7945,6 +7959,9 @@ static void switched_to_fair(struct rq *rq, struct task_struct *p)
 	se->depth = se->parent ? se->parent->depth + 1 : 0;
 #endif
 
+	/* Synchronize task with its cfs_rq */
+	attach_entity_load_avg(cfs_rq_of(&p->se), &p->se);
+
 	if (!task_on_rq_queued(p)) {
 
 		/*
@@ -8044,6 +8061,12 @@ static void task_move_group_fair(struct task_struct *p, int queued)
 	/* Synchronize task with its prev cfs_rq */
 	detach_entity_load_avg(cfs_rq, se);
 	set_task_rq(p, task_cpu(p));
+
+#ifdef CONFIG_SMP
+	/* Tell se's cfs_rq has been changed -- migrated */
+	p->se.avg.last_update_time = 0;
+#endif
+
 	se->depth = se->parent ? se->parent->depth + 1 : 0;
 	cfs_rq = cfs_rq_of(se);
 	if (!queued)