From owner-freebsd-stable@FreeBSD.ORG  Sun Sep 21 12:09:43 2008
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
Delivered-To: freebsd-stable@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 33A1F1065670
	for <freebsd-stable@FreeBSD.org>; Sun, 21 Sep 2008 12:09:43 +0000 (UTC)
	(envelope-from kris@FreeBSD.org)
Received: from weak.local (freefall.freebsd.org [IPv6:2001:4f8:fff6::28])
	by mx1.freebsd.org (Postfix) with ESMTP id 927C88FC13;
	Sun, 21 Sep 2008 12:09:42 +0000 (UTC)
	(envelope-from kris@FreeBSD.org)
Message-ID: <48D63994.20607@FreeBSD.org>
Date: Sun, 21 Sep 2008 13:09:56 +0100
From: Kris Kennaway <kris@FreeBSD.org>
User-Agent: Thunderbird 2.0.0.16 (Macintosh/20080707)
MIME-Version: 1.0
To: Mario Sergio Fujikawa Ferreira <lioux-list@uol.com.br>
References: <20080921103940.74650.qmail@exxodus.fedaykin.here>	<48D6268A.3090805@FreeBSD.org>
	<20080921111641.79555.qmail@exxodus.fedaykin.here>
In-Reply-To: <20080921111641.79555.qmail@exxodus.fedaykin.here>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: freebsd-stable@FreeBSD.org
Subject: Re: FreeBSD 7.1-PRERELEASE panic rw_rlock (udpinp)
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>, 
	<mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
	<mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 21 Sep 2008 12:09:43 -0000

Mario Sergio Fujikawa Ferreira wrote:
> On Sun, Sep 21, 2008 at 11:48:19AM +0100, Kris Kennaway wrote:
>> Mario Sergio Fujikawa Ferreira wrote:
>>> Hi,
>>>
>>>   I've been running FreeBSD 7.0-STABLE from August 1 without problems.
>>>
>>>   I tried updating to the latest -STABLE but I got a system panic.
>>>
>>> ----
>>> panic: _rw_rlock (udpinp): wlock already held @ /usr/src/sys/netinet/udp_usrreq.c
>>> ----
>>>
>>> FreeBSD 7.1-PRERELEASE #18: Sat Sep 20 23:38:22 BRT 2008
>>>
>>> 	Regards,
>>> 		Mario Ferreira
>>>
>>> ----
>>>
>>> - Kernel configuration
>>> http://people.freebsd.org/~lioux/panic/2008092100/KERNCONF
>>>
>>> - syslog output
>>> http://people.freebsd.org/~lioux/panic/2008092100/all.log
>>> http://people.freebsd.org/~lioux/panic/2008092100/messages
>>>
>>> - dmesg.boot
>>> http://people.freebsd.org/~lioux/panic/2008092100/dmesg.boot
>>>
>>> - kldstat
>>> http://people.freebsd.org/~lioux/panic/2008092100/kldstat.txt
>>>
>>> - /boot/loader.conf
>>> http://people.freebsd.org/~lioux/panic/2008092100/loader.conf
>>>
>>> - 'pciconf -lv'
>>> http://people.freebsd.org/~lioux/panic/2008092100/pciconf.txt
>>>
>>> - 'sysctl -a'
>>> http://people.freebsd.org/~lioux/panic/2008092100/sysctl.txt
>>>
>>> - /etc/sysctl.conf
>>> http://people.freebsd.org/~lioux/panic/2008092100/sysctl.conf
>>>
>> - gdb backtrace?
> 
> 	I had a hard lock there. I got the system panic but it
> locked instead of dumping core. I had to remove the power cord to
> reboot it.
> 
> 	I do not have much experience with kernel traces. How do I
> force a backtrace? Any unattended ddb scripts?

See the developers handbook.

Kris