--- src/sys/platform/vkernel/i386/trap.c	2008/04/14 12:01:52	1.30
+++ src/sys/platform/vkernel/i386/trap.c	2008/04/24 08:53:02	1.31
@@ -237,8 +237,11 @@ recheck:
 	/*
 	 * If the jungle wants us dead, so be it.
 	 */
-	if (lp->lwp_flag & LWP_WEXIT)
+	if (lp->lwp_flag & LWP_WEXIT) {
+		get_mplock();
 		lwp_exit(0);
+		rel_mplock();	/* NOT REACHED */
+	}
 
 	/*
 	 * Block here if we are in a stopped state.