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 <[email protected]>
--- t/kernel/exit.c~1_SIGCK 2007-08-05 18:43:00.000000000 +0400
+++ t/kernel/exit.c 2007-08-05 18:46:00.000000000 +0400
@@ -1210,7 +1210,7 @@ static int wait_task_zombie(struct task_
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;
-
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