--- src/sys/i386/i386/Attic/vm_machdep.c	2005/11/04 08:57:27	1.38
+++ src/sys/i386/i386/Attic/vm_machdep.c	2005/12/02 22:02:16	1.39
@@ -294,6 +294,7 @@ void
 cpu_thread_exit(void)
 {
 	curthread->td_switch = cpu_exit_switch;
+	curthread->td_flags |= TDF_EXITING;
 	lwkt_switch();
 	panic("cpu_exit");
 }