wait_task_zombie: remove unneeded child->signal check
A zombie must have a valid ->signal, we are going to release it and
__exit_signal() starts with BUG_ON(!sig).
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/exit.c b/kernel/exit.c
index 8b64c03..9d6e089 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1201,7 +1201,7 @@
return 0;
}
- if (likely(p->real_parent == p->parent) && likely(p->signal)) {
+ if (likely(p->real_parent == p->parent)) {
struct signal_struct *psig;
struct signal_struct *sig;