--- ./kernel/exit.c.nt	2004-09-13 18:00:12.727181136 +0400
+++ ./kernel/exit.c	2004-09-13 18:00:51.864231400 +0400
@@ -848,10 +848,7 @@ asmlinkage long sys_exit(int error_code)
 task_t fastcall *next_thread(const task_t *p)
 {
 #ifdef CONFIG_SMP
-	if (!p->sighand)
-		BUG();
-	if (!spin_is_locked(&p->sighand->siglock) &&
-				!rwlock_is_locked(&tasklist_lock))
+	if (!rwlock_is_locked(&tasklist_lock) || p->pids[PIDTYPE_TGID].nr == 0)
 		BUG();
 #endif
 	return pid_task(p->pids[PIDTYPE_TGID].pid_list.next, PIDTYPE_TGID);