NetBSD Problem Report #40702

From ignatios@laplace.cs.uni-bonn.de  Fri Feb 20 22:13:49 2009
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Date: Fri, 20 Feb 2009 23:11:28 +0100
From: ignatios@cs.uni-bonn.de
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To: gnats-bugs@gnats.NetBSD.org
Subject: ddb freezes when stepping over lock prefix
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>Number:         40702
>Category:       port-i386
>Synopsis:       ddb freezes when stepping over lock prefix
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    port-i386-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Feb 20 22:15:00 +0000 2009
>Originator:     ignatios@cs.uni-bonn.de
>Release:        NetBSD 5.0_RC2
>Organization:
	University of Bonn, CS Dept.
>Environment:
System: NetBSD laplace 5.0_RC2 NetBSD 5.0_RC2 (GENERIC) #3: Fri Feb 20 22:33:59 CET 2009 ignatios@random86:/var/itch/sources/5/oi386/sys/arch/i386/compile/GENERIC i386
Architecture: i386
Machine: i386
>Description:
	s(ingle step) through "lock cmpsomething" that's in cpu_simple_lock.
	The ddb prompt doesn't return. Nothing else happens.
>How-To-Repeat:
	try to single-step with ddb through pccbb_pci_callback.
>Fix:
	unknown.

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