From owner-freebsd-current@FreeBSD.ORG  Fri Nov  7 13:21:12 2003
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id AD8EA16A4CE
	for <freebsd-current@freebsd.org>;
	Fri,  7 Nov 2003 13:21:12 -0800 (PST)
Received: from ebb.errno.com (ebb.errno.com [66.127.85.87])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 51C2A43F3F
	for <freebsd-current@freebsd.org>;
	Fri,  7 Nov 2003 13:21:09 -0800 (PST)	(envelope-from sam@errno.com)
Received: from 66.127.85.91 ([66.127.85.91])
	(authenticated bits=0)
	by ebb.errno.com (8.12.9/8.12.9) with ESMTP id hA7LL50x097630
	(version=TLSv1/SSLv3 cipher=RC4-MD5 bits=128 verify=NO);
	Fri, 7 Nov 2003 13:21:08 -0800 (PST)
	(envelope-from sam@errno.com)
From: Sam Leffler <sam@errno.com>
Organization: Errno Consulting
To: Steve Kargl <sgk@troutmask.apl.washington.edu>,
	"Steven G. Kargl" <kargl@troutmask.apl.washington.edu>
Date: Fri, 7 Nov 2003 13:23:04 -0800
User-Agent: KMail/1.5.3
References: <200311071931.hA7JVjen041745@troutmask.apl.washington.edu>
	<20031107205456.GA42685@troutmask.apl.washington.edu>
In-Reply-To: <20031107205456.GA42685@troutmask.apl.washington.edu>
MIME-Version: 1.0
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Message-Id: <200311071323.04145.sam@errno.com>
cc: freebsd-current@freebsd.org
Subject: Re: panic: mtx_lock() of spin mutex in ip_output.c
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 07 Nov 2003 21:21:12 -0000

On Friday 07 November 2003 12:54 pm, Steve Kargl wrote:
> On Fri, Nov 07, 2003 at 11:31:45AM -0800, Steven G. Kargl wrote:
> > I have a Dell 4150 laptop using dhcp and ntpd on the
> > xl0 interface.  I did "ifconfig xl0 down" and received
> > the following panic (hand transcribed :-( ).
> >
> > panic: mtx_lock() of spin mutex (null) @
> > /usr/src/sys/netinet/ip_output.c:266 Stack backtrace:
> > backtrace()
> > panic()
> > panic: process 414(ntpd):2 Giant but isn't blocked on a mutex
> >
> > In ddb> I get,
> >
> > Debugger()
> > panic()
> > propagate_priority()
> > _mtx_lock_sleep()
> > _mtx_lock_flags()
> > softclock()
> > ithread_loop()
> > fork_exit()
> > fork_trampoline()
> >
> > I have a crash dump and kernel.debug if further info is need

Make sure you have rev 1.250 of ip_input.c.

	Sam