diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index c4c0d760d2527984a59fcdcf330117156c2a18fe..f2a636e7acc46ea3d54b3c0c9f856b46f6bf7374 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -1527,8 +1527,12 @@ static void enqueue_task_dl(struct rq *rq, struct task_struct *p, int flags)
 			 * The replenish timer needs to be canceled. No
 			 * problem if it fires concurrently: boosted threads
 			 * are ignored in dl_task_timer().
+			 *
+			 * If the timer callback was running (hrtimer_try_to_cancel == -1),
+			 * it will eventually call put_task_struct().
 			 */
-			hrtimer_try_to_cancel(&p->dl.dl_timer);
+			if (hrtimer_try_to_cancel(&p->dl.dl_timer) == 1)
+				put_task_struct(p);
 			p->dl.dl_throttled = 0;
 		}
 	} else if (!dl_prio(p->normal_prio)) {