From owner-freebsd-stable@FreeBSD.ORG  Tue Oct  2 21:23:02 2012
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 A2C0C106564A;
	Tue,  2 Oct 2012 21:23:02 +0000 (UTC) (envelope-from jhb@freebsd.org)
Received: from bigwig.baldwin.cx (bigknife-pt.tunnel.tserv9.chi1.ipv6.he.net
	[IPv6:2001:470:1f10:75::2])
	by mx1.freebsd.org (Postfix) with ESMTP id 70FF08FC15;
	Tue,  2 Oct 2012 21:23:02 +0000 (UTC)
Received: from jhbbsd.localnet (unknown [209.249.190.124])
	by bigwig.baldwin.cx (Postfix) with ESMTPSA id 91D1AB939;
	Tue,  2 Oct 2012 17:23:01 -0400 (EDT)
From: John Baldwin <jhb@freebsd.org>
To: freebsd-stable@freebsd.org,
 "sbruno@freebsd.org" <sbruno@freebsd.org>
Date: Tue, 2 Oct 2012 17:06:53 -0400
User-Agent: KMail/1.13.5 (FreeBSD/8.2-CBSD-20110714-p20; KDE/4.5.5; amd64; ; )
References: <1342197082.2664.4.camel@powernoodle.corp.yahoo.com>
	<201210010847.53984.jhb@freebsd.org>
	<1349204730.4246.12.camel@powernoodle.corp.yahoo.com>
In-Reply-To: <1349204730.4246.12.camel@powernoodle.corp.yahoo.com>
MIME-Version: 1.0
Content-Type: Text/Plain;
  charset="utf-8"
Content-Transfer-Encoding: 7bit
Message-Id: <201210021706.53942.jhb@freebsd.org>
X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7
	(bigwig.baldwin.cx); Tue, 02 Oct 2012 17:23:01 -0400 (EDT)
Cc: Andriy Gapon <avg@freebsd.org>
Subject: Re: stable/9 panic Bad tailq NEXT(0xffffffff80e52660->tqh_last) !=
	NULL
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: Tue, 02 Oct 2012 21:23:02 -0000

On Tuesday, October 02, 2012 3:05:30 pm Sean Bruno wrote:
> On Mon, 2012-10-01 at 05:47 -0700, John Baldwin wrote:
> > Can you add extra printfs to see where exactly attach is failing?  I
> > would
> > start with the attach routine in sys/dev/acpica/acpi_pcib_pci.c:
> > 
> > 
> 
> hrm ... interesting side effects.  After adding my printf's I don't hit
> the panic any more.  :-)
> 
> I changed the ret val of acpi_pcib_pci_attach() and put in some
> instrumentation in acpi_pcib_attach().  The key value is that
> acpi_DeviceIsPresent() appears to be returning FALSE in this case.
> 
> patch used -->http://people.freebsd.org/~sbruno/acpi_pcib.txt

What happens if you just comment out the acpi_DeviceIsPresent() check?

-- 
John Baldwin