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-rw-r--r--fs/exec.c15
1 files changed, 2 insertions, 13 deletions
diff --git a/fs/exec.c b/fs/exec.c
index a13883903ee9..8fccc276d40d 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -766,9 +766,7 @@ static int de_thread(struct task_struct *tsk)
/*
* Kill all other threads in the thread group.
- * We must hold tasklist_lock to call zap_other_threads.
*/
- read_lock(&tasklist_lock);
spin_lock_irq(lock);
if (signal_group_exit(sig)) {
/*
@@ -776,21 +774,10 @@ static int de_thread(struct task_struct *tsk)
* return so that the signal is processed.
*/
spin_unlock_irq(lock);
- read_unlock(&tasklist_lock);
return -EAGAIN;
}
-
- /*
- * child_reaper ignores SIGKILL, change it now.
- * Reparenting needs write_lock on tasklist_lock,
- * so it is safe to do it under read_lock.
- */
- if (unlikely(tsk->group_leader == task_child_reaper(tsk)))
- task_active_pid_ns(tsk)->child_reaper = tsk;
-
sig->group_exit_task = tsk;
zap_other_threads(tsk);
- read_unlock(&tasklist_lock);
/* Account for the thread group leader hanging around: */
count = thread_group_leader(tsk) ? 1 : 2;
@@ -821,6 +808,8 @@ static int de_thread(struct task_struct *tsk)
schedule();
}
+ if (unlikely(task_child_reaper(tsk) == leader))
+ task_active_pid_ns(tsk)->child_reaper = tsk;
/*
* The only record we have of the real-time age of a
* process, regardless of execs it's done, is start_time.