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-rw-r--r--kernel/exit.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/exit.c b/kernel/exit.c
index 3988a02efaef..c038d10dfb38 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -739,6 +739,13 @@ static void exit_notify(struct task_struct *tsk, int group_dead)
kill_orphaned_pgrp(tsk->group_leader, NULL);
tsk->exit_state = EXIT_ZOMBIE;
+ /*
+ * sub-thread or delay_group_leader(), wake up the
+ * PIDFD_THREAD waiters.
+ */
+ if (!thread_group_empty(tsk))
+ do_notify_pidfd(tsk);
+
if (unlikely(tsk->ptrace)) {
int sig = thread_group_leader(tsk) &&
thread_group_empty(tsk) &&