From 1587b45c5651a1398fc14c684b1e6b8d6f6e6247 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Fri, 19 Mar 1999 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1999-03-19

---
 pc/trap.c      | 1 +
 port/taslock.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/pc/trap.c b/pc/trap.c
index 8581ba568b877dd49d41360d92652e139f1d9a1b..7f74a2a7c0a0c96740309441cab372118eb09432 100644
--- a/pc/trap.c
+++ b/pc/trap.c
@@ -376,6 +376,7 @@ fault386(Ureg* ureg, void*)
 	n = fault(addr, read);
 	if(n < 0){
 		if(!user){
+print("fault pc %luX addr %luX\n", ureg->pc, addr);
 			dumpregs(ureg);
 			panic("fault: 0x%lux\n", addr);
 		}
diff --git a/port/taslock.c b/port/taslock.c
index 5286970a0a59e96ed36360c7417b22b5c4bd3763..837b19cde2309b55251314a9e9f1c3a4379f49d3 100644
--- a/port/taslock.c
+++ b/port/taslock.c
@@ -110,7 +110,7 @@ lockstats.glare++;
 	} else
 		oldpri = 0;
 	if(conf.nmach < 2)
-		panic("ilock: no way out: pc %uX\n", pc);
+		panic("ilock: no way out: pc %uX held by %uX\n", pc, l->pc);
 
 	for(;;){
 lockstats.inglare++;