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Subject[PATCH] remove BUG_ON(p->ptrace) in release_task()
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Date
Hi,

I think, BUG_ON(p->ptrace) will be called if the CLONE_DETACH process
is traced. This patch removes BUG_ON(p->ptrace), and also removes
BUG_ON(p->ptrace) workaround in sys_wait4().

Please apply.
--
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>

--- linux-2.5.33/kernel/exit.c~ 2002-09-02 01:02:07.000000000 +0900
+++ linux-2.5.33/kernel/exit.c 2002-09-02 00:54:47.000000000 +0900
@@ -66,8 +66,7 @@
atomic_dec(&p->user->processes);
security_ops->task_free_security(p);
free_uid(p->user);
- BUG_ON(p->ptrace || !list_empty(&p->ptrace_list) ||
- !list_empty(&p->ptrace_children));
+ BUG_ON(!list_empty(&p->ptrace_list)||!list_empty(&p->ptrace_children));
unhash_process(p);

release_thread(p);
@@ -717,14 +716,8 @@
ptrace_unlink(p);
do_notify_parent(p, SIGCHLD);
write_unlock_irq(&tasklist_lock);
- } else {
- if (p->ptrace) {
- write_lock_irq(&tasklist_lock);
- ptrace_unlink(p);
- write_unlock_irq(&tasklist_lock);
- }
+ } else
release_task(p);
- }
goto end_wait4;
default:
continue;
-
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