--- src/sys/kern/kern_upcall.c	2005/10/09 20:12:34	1.7
+++ src/sys/kern/kern_upcall.c	2005/10/11 09:59:56	1.8
@@ -66,7 +66,7 @@ static void
 sigupcall_remote(void *arg)
 {
  	struct lwp *lp = arg;
-	if (lp->lwp_proc == lwkt_preempted_proc())
+	if (lp == lwkt_preempted_proc())
 		sigupcall();
 }