diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index cca1835efa7b..ed80d6bd76c8 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5730,6 +5730,8 @@ static unsigned long capacity_spare_wake(int cpu, struct task_struct *p)
 /*
  * find_idlest_group finds and returns the least busy CPU group within the
  * domain.
+ *
+ * Assumes p is allowed on at least one CPU in sd.
  */
 static struct sched_group *
 find_idlest_group(struct sched_domain *sd, struct task_struct *p,
@@ -5917,6 +5919,9 @@ static inline int find_idlest_cpu(struct sched_domain *sd, struct task_struct *p
 {
 	int new_cpu = prev_cpu;
 
+	if (!cpumask_intersects(sched_domain_span(sd), &p->cpus_allowed))
+		return prev_cpu;
+
 	while (sd) {
 		struct sched_group *group;
 		struct sched_domain *tmp;