Author: dumbbell
Date: Mon Sep 8 08:44:50 2014
New Revision: 271253
URL: http://svnweb.freebsd.org/changeset/base/271253
Log:
pause_sbt(): Take the cold path (ie. use DELAY()) if KDB is active
This fixes a panic in the i915 driver when one uses debug.kdb.enter=1
under vt(4).
PR: 193269
Reported by: emaste@
Submitted by: avg@
MFC after: 3 days
Modified:
head/sys/kern/kern_synch.c
Modified: head/sys/kern/kern_synch.c
==============================================================================
--- head/sys/kern/kern_synch.c Mon Sep 8 08:25:33 2014 (r271252)
+++ head/sys/kern/kern_synch.c Mon Sep 8 08:44:50 2014 (r271253)
@@ -362,7 +362,7 @@ pause_sbt(const char *wmesg, sbintime_t
if (sbt == 0)
sbt = tick_sbt;
- if (cold) {
+ if (cold || kdb_active) {
/*
* We delay one second at a time to avoid overflowing the
* system specific DELAY() function(s):
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