diff options
| -rw-r--r-- | fs/exec.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/exec.c b/fs/exec.c index b08367abf30..d219541db06 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -967,6 +967,14 @@ static int de_thread(struct task_struct *tsk) BUG_ON(leader->exit_state != EXIT_ZOMBIE); leader->exit_state = EXIT_DEAD; + + /* + * We are going to release_task()->ptrace_unlink() silently, + * the tracer can sleep in do_wait(). EXIT_DEAD guarantees + * the tracer wont't block again waiting for this thread. + */ + if (unlikely(leader->ptrace)) + __wake_up_parent(leader, leader->parent); write_unlock_irq(&tasklist_lock); release_task(leader); |