diff --git a/kernel/exit.c b/kernel/exit.c
index 92d38d4da4b1a6c7c237f06c2a81d46316c104a0..6ed6a1d552b5d237cf391c38ff8a4dfdafdc7888 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1380,20 +1380,16 @@ static int wait_consider_task(struct wait_opts *wo, int ptrace,
 
 	/* slay zombie? */
 	if (p->exit_state == EXIT_ZOMBIE) {
-		/*
-		 * A zombie ptracee is only visible to its ptracer.
-		 * Notification and reaping will be cascaded to the real
-		 * parent when the ptracer detaches.
-		 */
-		if (likely(!ptrace) && unlikely(p->ptrace)) {
-			/* it will become visible, clear notask_error */
-			wo->notask_error = 0;
-			return 0;
-		}
-
 		/* we don't reap group leaders with subthreads */
-		if (!delay_group_leader(p))
-			return wait_task_zombie(wo, p);
+		if (!delay_group_leader(p)) {
+			/*
+			 * A zombie ptracee is only visible to its ptracer.
+			 * Notification and reaping will be cascaded to the
+			 * real parent when the ptracer detaches.
+			 */
+			if (unlikely(ptrace) || likely(!p->ptrace))
+				return wait_task_zombie(wo, p);
+		}
 
 		/*
 		 * Allow access to stopped/continued state via zombie by