diff options
| -rw-r--r-- | kernel/signal.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 29aca40be33f..4a45bac2c632 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -971,13 +971,11 @@ int __fatal_signal_pending(struct task_struct *tsk) } EXPORT_SYMBOL(__fatal_signal_pending); -/* - * Must be called under rcu_read_lock() or with tasklist_lock read-held. - */ struct sighand_struct *lock_task_sighand(struct task_struct *tsk, unsigned long *flags) { struct sighand_struct *sighand; + rcu_read_lock(); for (;;) { sighand = rcu_dereference(tsk->sighand); if (unlikely(sighand == NULL)) @@ -988,6 +986,7 @@ struct sighand_struct *lock_task_sighand(struct task_struct *tsk, unsigned long break; spin_unlock_irqrestore(&sighand->siglock, *flags); } + rcu_read_unlock(); return sighand; } |