diff --git a/kernel/sched.c b/kernel/sched.c
index 340dd23..b4f4eb6 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1468,7 +1468,7 @@
 	 * the sleep_avg of the parent as well.
 	 */
 	rq = task_rq_lock(p->parent, &flags);
-	if (p->first_time_slice) {
+	if (p->first_time_slice && task_cpu(p) == task_cpu(p->parent)) {
 		p->parent->time_slice += p->time_slice;
 		if (unlikely(p->parent->time_slice > task_timeslice(p)))
 			p->parent->time_slice = task_timeslice(p);