From owner-freebsd-current@FreeBSD.ORG  Sun Jul 17 00:36:20 2005
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
X-Original-To: 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 6610716A41C
	for <freebsd-current@freebsd.org>; Sun, 17 Jul 2005 00:36:20 +0000 (GMT)
	(envelope-from csaba@beastie.creo.hu)
Received: from beastie.creo.hu (www.creo.hu [217.113.62.14])
	by mx1.FreeBSD.org (Postfix) with ESMTP id CC03F43D48
	for <freebsd-current@freebsd.org>; Sun, 17 Jul 2005 00:36:19 +0000 (GMT)
	(envelope-from csaba@beastie.creo.hu)
Received: from beastie.creo.hu (localhost [127.0.0.1])
	by beastie.creo.hu (8.13.3/8.13.3) with ESMTP id j6H0ZLeW003118
	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO)
	for <freebsd-current@freebsd.org>;
	Sun, 17 Jul 2005 02:35:21 +0200 (CEST)
	(envelope-from csaba@beastie.creo.hu)
Received: (from csaba@localhost)
	by beastie.creo.hu (8.13.3/8.13.3/Submit) id j6H0ZLCV003117
	for freebsd-current@freebsd.org; Sun, 17 Jul 2005 02:35:21 +0200 (CEST)
	(envelope-from csaba)
Date: Sun, 17 Jul 2005 02:35:21 +0200
From: Csaba Henk <csaba-ml@creo.hu>
To: freebsd-current@freebsd.org
Message-ID: <20050717003521.GG73367@beastie.creo.hu>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.5.9i
Subject: early panic and dump
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
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: Sun, 17 Jul 2005 00:36:20 -0000

Hi!

I tried to install both RELENG-6 and CURRENT, and both kernels behaved
the same way: panicked quite early (before init) with a page fault. Has
anyone met with this phenomena?

I'd like to show you some fancy backtracks, but as it all happened before
starting init, rc.conf settings won't help me in getting the dump.

What I've read: 

"the dump device can be hard-coded via the dump clause in the config(5)
line of a kernel configuration file."

But putting 

dump /dev/ad0s4

into the config file is considered a syntax error, and the man page
of config doesn't contain anything about dumping.

Another thing which I found on the net suggests setting the dumpdev
variable in the loader(8). I can do that, but it doesn't make a difference,
and again, the man page doesn't mention dumping.

How to get that wacky dump these days?

TIA.

Cheers,
Csaba