diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index 217e4a9..50ec9ea 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -1241,6 +1241,7 @@ static int wake_affine(struct sched_domain *sd, struct task_struct *p, int sync)
 	 * effect of the currently running task from the load
 	 * of the current CPU:
 	 */
+	rcu_read_lock();
 	if (sync) {
 		tg = task_group(current);
 		weight = current->se.load.weight;
@@ -1250,6 +1251,7 @@ static int wake_affine(struct sched_domain *sd, struct task_struct *p, int sync)
 	}
 
 	tg = task_group(p);
+	rcu_read_unlock();
 	weight = p->se.load.weight;
 
 	imbalance = 100 + (sd->imbalance_pct - 100) / 2;