From owner-freebsd-amd64@FreeBSD.ORG  Mon Mar 18 05:40:01 2013
Return-Path: <owner-freebsd-amd64@FreeBSD.ORG>
Delivered-To: freebsd-amd64@smarthost.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115])
 by hub.freebsd.org (Postfix) with ESMTP id A86891E9
 for <freebsd-amd64@smarthost.ysv.freebsd.org>;
 Mon, 18 Mar 2013 05:40:01 +0000 (UTC)
 (envelope-from gnats@FreeBSD.org)
Received: from freefall.freebsd.org (freefall.freebsd.org
 [IPv6:2001:1900:2254:206c::16:87])
 by mx1.freebsd.org (Postfix) with ESMTP id 94E1F6FC
 for <freebsd-amd64@smarthost.ysv.freebsd.org>;
 Mon, 18 Mar 2013 05:40:01 +0000 (UTC)
Received: from freefall.freebsd.org (localhost [127.0.0.1])
 by freefall.freebsd.org (8.14.6/8.14.6) with ESMTP id r2I5e1S8014977
 for <freebsd-amd64@freefall.freebsd.org>; Mon, 18 Mar 2013 05:40:01 GMT
 (envelope-from gnats@freefall.freebsd.org)
Received: (from gnats@localhost)
 by freefall.freebsd.org (8.14.6/8.14.6/Submit) id r2I5e11N014976;
 Mon, 18 Mar 2013 05:40:01 GMT (envelope-from gnats)
Date: Mon, 18 Mar 2013 05:40:01 GMT
Message-Id: <201303180540.r2I5e11N014976@freefall.freebsd.org>
To: freebsd-amd64@FreeBSD.org
Cc: 
From: Martin Bishop <martin.bishop@gmail.com>
Subject: Re: amd64/176835: Fatal trap 12: page fault while in kernel mode
X-Mailman-Approved-At: Mon, 18 Mar 2013 11:36:05 +0000
X-BeenThere: freebsd-amd64@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
Reply-To: Martin Bishop <martin.bishop@gmail.com>
List-Id: Porting FreeBSD to the AMD64 platform <freebsd-amd64.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-amd64>,
 <mailto:freebsd-amd64-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-amd64>
List-Post: <mailto:freebsd-amd64@freebsd.org>
List-Help: <mailto:freebsd-amd64-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-amd64>,
 <mailto:freebsd-amd64-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 18 Mar 2013 05:40:01 -0000

The following reply was made to PR amd64/176835; it has been noted by GNATS.

From: Martin Bishop <martin.bishop@gmail.com>
To: bug-followup@FreeBSD.org, martin.bishop@gmail.com
Cc:  
Subject: Re: amd64/176835: Fatal trap 12: page fault while in kernel mode
Date: Sun, 17 Mar 2013 22:33:50 -0700

 After one more crash to enable dumping, and one to produce a core.
 
 Backtrace from kgdb
 
 (kgdb) bt
 #0  doadump (textdump=Variable "textdump" is not available.
 ) at pcpu.h:224
 #1  0xffffffff808ea3a1 in kern_reboot (howto=260) at
 /usr/src/sys/kern/kern_shutdown.c:448
 #2  0xffffffff808ea897 in panic (fmt=0x1 <Address 0x1 out of bounds>)
 at /usr/src/sys/kern/kern_shutdown.c:636
 #3  0xffffffff80bd8240 in trap_fatal (frame=0xc, eva=Variable "eva" is
 not available.
 ) at /usr/src/sys/amd64/amd64/trap.c:857
 #4  0xffffffff80bd857d in trap_pfault (frame=0xffffff80913118c0,
 usermode=0) at /usr/src/sys/amd64/amd64/trap.c:773
 #5  0xffffffff80bd8b9e in trap (frame=0xffffff80913118c0) at
 /usr/src/sys/amd64/amd64/trap.c:456
 #6  0xffffffff80bc315f in calltrap () at
 /usr/src/sys/amd64/amd64/exception.S:228
 #7  0xffffffff808eb0b3 in sigtd (p=0xfffffe00212d3000, sig=1,
 prop=Variable "prop" is not available.
 ) at /usr/src/sys/kern/kern_sig.c:1927
 #8  0xffffffff808efb14 in tdsendsignal (p=0xfffffe00212d3000, td=0x0,
 sig=1, ksi=0xffffff8091311a70) at /usr/src/sys/kern/kern_sig.c:2045
 #9  0xffffffff808f0b6d in killpg1 (td=0xfffffe00341278e0, sig=1,
 pgid=Variable "pgid" is not available.
 ) at /usr/src/sys/kern/kern_sig.c:1650
 #10 0xffffffff808f0de4 in sys_kill (td=0xfffffe00341278e0,
 uap=0xffffff8091311bb0) at /usr/src/sys/kern/kern_sig.c:1703
 #11 0xffffffff80bd7ae6 in amd64_syscall (td=0xfffffe00341278e0,
 traced=0) at subr_syscall.c:135
 #12 0xffffffff80bc3447 in Xfast_syscall () at
 /usr/src/sys/amd64/amd64/exception.S:387
 #13 0x00000008015dbc2c in ?? ()
 
 Any particular information to grab to make this easier to track down ?