Re: do_syslog/__down_trylock lockup in current BK

[Ingo Molnar]

the following assert triggers and catches the lockup:

--- linux/kernel/exit.c.orig	Mon Sep  9 21:59:24 2002
+++ linux/kernel/exit.c	Mon Sep  9 22:38:44 2002
@@ -461,6 +461,8 @@
 		ptrace_unlink (p);
 
 		list_del_init(&p->sibling);
+		if (p->parent == father && p->parent == p->real_parent)
+			BUG();
 		p->parent = p->real_parent;
 		list_add_tail(&p->sibling, &p->parent->children);
 	}

so somehow we can end up having parent == real_parent?

	Ingo