From 5326e17d9a365c48cd7c2dab91f15cb5542e7bd7 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Sat, 28 Jan 1995 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1995-01-28

---
 carrera/trap.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/carrera/trap.c b/carrera/trap.c
index 10675cc0d2f84cff4dd8d0f69b4316202d1184ea..bdc55828e7afd4340901aadded769807a8296690 100644
--- a/carrera/trap.c
+++ b/carrera/trap.c
@@ -512,7 +512,6 @@ notify(Ureg *ur)
 	if(n->flag != NUser && (up->notified || up->notify==0)) {
 		if(n->flag == NDebug)
 			pprint("suicide: %s\n", n->msg);
-
 		qunlock(&up->debug);
 		pexit(n->msg, n->flag!=NDebug);
 	}
@@ -531,7 +530,7 @@ notify(Ureg *ur)
 	sp -= sizeof(Ureg);
 
 	if(!okaddr((ulong)up->notify, BY2WD, 0) ||
-	   !okaddr(sp-ERRLEN-4*BY2WD, sizeof(Ureg)+ERRLEN-4*BY2WD, 1)) {
+	   !okaddr(sp-ERRLEN-4*BY2WD, sizeof(Ureg)+ERRLEN+4*BY2WD, 1)) {
 		pprint("suicide: bad address or sp in notify\n");
 		qunlock(&up->debug);
 		pexit("Suicide", 0);
@@ -601,7 +600,7 @@ noted(Ureg *kur, Ureg **urp, ulong arg0)
 		pexit("Suicide", 0);
 	}
 
-	oureg = (ulong)up->ureg;
+	oureg = (ulong)nur;
 	if(oureg){
 		if(oureg>=USTKTOP || oureg<USTKTOP-USTKSIZE
 		|| (oureg & (BY2V-1))
@@ -637,7 +636,7 @@ noted(Ureg *kur, Ureg **urp, ulong arg0)
 		sp = oureg-4*BY2WD-ERRLEN;
 		splhi();
 		(*urp)->sp = sp;
-		((ulong*)sp)[1] = (ulong)up->ureg;	/* arg 1 0(FP) is ureg* */
+		((ulong*)sp)[1] = oureg;	/* arg 1 0(FP) is ureg* */
 		((ulong*)sp)[0] = 0;			/* arg 0 is pc */
 		(*urp)->r1 = oureg;		/* arg 1 is ureg* */
 		(*urp)->hr1 = 0;