From owner-freebsd-current@FreeBSD.ORG  Fri Sep 12 21:55:30 2014
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id A74D0465
 for <freebsd-current@freebsd.org>; Fri, 12 Sep 2014 21:55:30 +0000 (UTC)
Received: from bigwig.baldwin.cx (bigwig.baldwin.cx [IPv6:2001:470:1f11:75::1])
 (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 7DD33ED7
 for <freebsd-current@freebsd.org>; Fri, 12 Sep 2014 21:55:30 +0000 (UTC)
Received: from ralph.baldwin.cx (pool-173-70-85-31.nwrknj.fios.verizon.net
 [173.70.85.31])
 by bigwig.baldwin.cx (Postfix) with ESMTPSA id 68361B968;
 Fri, 12 Sep 2014 17:55:29 -0400 (EDT)
From: John Baldwin <jhb@freebsd.org>
To: Marcin Cieslak <saper@saper.info>
Subject: Re: panic: resource_list_alloc: resource entry is busy
Date: Fri, 12 Sep 2014 17:06:39 -0400
Message-ID: <3819796.R7BYA2qqa8@ralph.baldwin.cx>
User-Agent: KMail/4.10.5 (FreeBSD/10.0-STABLE; KDE/4.10.5; amd64; ; )
In-Reply-To: <alpine.BSF.2.11.1409122045070.62150@m.saper.info>
References: <alpine.BSF.2.11.1409101241440.51386@m.saper.info>
 <1584874.3FXdLuYUQI@ralph.baldwin.cx>
 <alpine.BSF.2.11.1409122045070.62150@m.saper.info>
MIME-Version: 1.0
Content-Transfer-Encoding: 7Bit
Content-Type: text/plain; charset="us-ascii"
X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.7
 (bigwig.baldwin.cx); Fri, 12 Sep 2014 17:55:29 -0400 (EDT)
Cc: freebsd-current@freebsd.org
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
 <freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/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: Fri, 12 Sep 2014 21:55:30 -0000

On Friday, September 12, 2014 08:57:55 PM Marcin Cieslak wrote:
> On Fri, 12 Sep 2014, John Baldwin wrote:
> >>      at /usr/src/sys/dev/pci/vga_pci.c:318
> >> 
> >> 318		return (bus_alloc_resource(dev, type, rid, start, end, count,
> > 
> > flags));
> > 
> >> Current language:  auto; currently minimal
> >> (kgdb) p *rid
> >> $1 = 0
> > 
> > Hmm, type 1 is SYS_RES_IRQ.  IRQ resources should not be marked reserved.
> > 
> > Oh, some other child of vgapci has already allocated the IRQ.  That seems
> > odd.
> > 
> > Can you get 'devinfo -r' output before you kldload i915kms and again after
> > doing the kldload?  (No need to run startx)
> 
> Please note I originally loaded "i915.ko", not "i915kms.ko"

Oh, that is probably your problem.  X loaded i915kms automatically and
i915 and i915kms do not get along.  i915 had already allocated the IRQ
when i915kms tried to alloc the same IRQ causing the issue.

-- 
John Baldwin