From owner-freebsd-stable@freebsd.org  Fri Mar 24 14:01:59 2017
Return-Path: <owner-freebsd-stable@freebsd.org>
Delivered-To: freebsd-stable@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 7B9C8D14FAB
 for <freebsd-stable@mailman.ysv.freebsd.org>;
 Fri, 24 Mar 2017 14:01:59 +0000 (UTC)
 (envelope-from vangyzen@FreeBSD.org)
Received: from smtp.vangyzen.net (hotblack.vangyzen.net [199.48.133.146])
 by mx1.freebsd.org (Postfix) with ESMTP id 675A0F5C
 for <freebsd-stable@freebsd.org>; Fri, 24 Mar 2017 14:01:58 +0000 (UTC)
 (envelope-from vangyzen@FreeBSD.org)
Received: from ford.home.vangyzen.net (unknown [76.164.15.242])
 by smtp.vangyzen.net (Postfix) with ESMTPSA id 3345256486;
 Fri, 24 Mar 2017 09:01:52 -0500 (CDT)
Subject: Re: Kernel panic on production system - what now?
To: "Patrick M. Hausen" <hausen@punkt.de>,
 freebsd-stable <freebsd-stable@freebsd.org>
References: <04928243-2821-4BE5-87E6-198D32C052B7@punkt.de>
From: Eric van Gyzen <vangyzen@FreeBSD.org>
Message-ID: <393df674-01fa-7420-da58-da1887f06674@FreeBSD.org>
Date: Fri, 24 Mar 2017 09:01:39 -0500
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:45.0) Gecko/20100101
 Thunderbird/45.6.0
MIME-Version: 1.0
In-Reply-To: <04928243-2821-4BE5-87E6-198D32C052B7@punkt.de>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/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: <https://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
 <mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 24 Mar 2017 14:01:59 -0000

On 03/24/2017 03:28, Patrick M. Hausen wrote:
> Hi all,
> 
> Mar 24 02:39:36 ph001 kernel: kernel trap 12 with interrupts disabled
> Mar 24 02:39:36 ph001 kernel: 
> Mar 24 02:39:36 ph001 kernel: 
> Mar 24 02:39:36 ph001 kernel: Fatal trap 12: page fault while in kernel mode
> Mar 24 02:39:37 ph001 kernel: cpuid = 8; apic id = 08
> Mar 24 02:39:37 ph001 kernel: fault virtual address	= 0x0
> Mar 24 02:39:37 ph001 kernel: fault code		= supervisor read data, page not present
> Mar 24 02:39:37 ph001 kernel: instruction pointer	= 0x20:0xffffffff809a4330
> 
> I must admit that this is a "first" for me. So where do I go from here?
> There is "stuff" in /var/crash that has got the right timestamps, it seems ...

Start with:

	# pkg install gdb
	# kgdb712 /boot/kernel/kernel /var/crash/vmcore.0

The "712" above is the GDB version number, so it might be different on your
system.  In GDB:

	(gdb) bt full

Post that output to this list, along with "uname -a".

Eric