diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index da8a19470..001a39dbc 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4930,6 +4930,8 @@ static int __sched_setscheduler(struct task_struct *p,
 			 */
 			if (!cpumask_subset(span, p->cpus_ptr) ||
 			    rq->rd->dl_bw.bw == 0) {
+				printk_deferred("The affinity mask of the task is WRONG!!!\n");
+
 				retval = -EPERM;
 				goto unlock;
 			}