diff --git a/kernel/sched.c b/kernel/sched.c
index e0fa3ff7f194..6820b5b3a969 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -7796,6 +7796,8 @@ static void init_cfs_rq(struct cfs_rq *cfs_rq, struct rq *rq)
 	INIT_LIST_HEAD(&cfs_rq->tasks);
 #ifdef CONFIG_FAIR_GROUP_SCHED
 	cfs_rq->rq = rq;
+	/* allow initial update_cfs_load() to truncate */
+	cfs_rq->load_stamp = 1;
 #endif
 	cfs_rq->min_vruntime = (u64)(-(1LL << 20));
 }
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 0c550c841eee..4cbc9121094c 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -733,6 +733,7 @@ static void update_cfs_load(struct cfs_rq *cfs_rq, int global_update)
 	    now - cfs_rq->load_last > 4 * period) {
 		cfs_rq->load_period = 0;
 		cfs_rq->load_avg = 0;
+		delta = period - 1;
 	}
 
 	cfs_rq->load_stamp = now;