diff options
| -rw-r--r-- | fs/exec.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/fs/exec.c b/fs/exec.c index b58ba7d127e0..49fa0127a330 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1373,7 +1373,11 @@ static void zap_process(struct task_struct *start) struct task_struct *t; unsigned long flags; - spin_lock_irqsave(&start->sighand->siglock, flags); + /* + * start->sighand can't disappear, but may be + * changed by de_thread() + */ + lock_task_sighand(start, &flags); start->signal->flags = SIGNAL_GROUP_EXIT; start->signal->group_stop_count = 0; @@ -1386,7 +1390,7 @@ static void zap_process(struct task_struct *start) } } while ((t = next_thread(t)) != start); - spin_unlock_irqrestore(&start->sighand->siglock, flags); + unlock_task_sighand(start, &flags); } static void zap_threads(struct mm_struct *mm) @@ -1404,7 +1408,7 @@ static void zap_threads(struct mm_struct *mm) complete(vfork_done); } - read_lock(&tasklist_lock); + rcu_read_lock(); for_each_process(g) { p = g; do { @@ -1415,7 +1419,7 @@ static void zap_threads(struct mm_struct *mm) } } while ((p = next_thread(p)) != g); } - read_unlock(&tasklist_lock); + rcu_read_unlock(); } static void coredump_wait(struct mm_struct *mm) |