From owner-freebsd-current@FreeBSD.ORG  Fri May 11 04:35:49 2007
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 [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id 5514916A400
	for <freebsd-current@freebsd.org>; Fri, 11 May 2007 04:35:49 +0000 (UTC)
	(envelope-from thompsa@freebsd.org)
Received: from heff.fud.org.nz (203-109-251-39.static.bliink.ihug.co.nz
	[203.109.251.39])
	by mx1.freebsd.org (Postfix) with ESMTP id E242013C458
	for <freebsd-current@freebsd.org>; Fri, 11 May 2007 04:35:48 +0000 (UTC)
	(envelope-from thompsa@freebsd.org)
Received: by heff.fud.org.nz (Postfix, from userid 1001)
	id 3A1D51CC5A; Fri, 11 May 2007 16:35:47 +1200 (NZST)
Date: Fri, 11 May 2007 16:35:47 +1200
From: Andrew Thompson <thompsa@freebsd.org>
To: Kostik Belousov <kostikbel@gmail.com>
Message-ID: <20070511043547.GB5097@heff.fud.org.nz>
Mail-Followup-To: Andrew Thompson <thompsa@freebsd.org>,
	Kostik Belousov <kostikbel@gmail.com>, freebsd-current@freebsd.org
References: <20070511020555.GA5097@heff.fud.org.nz>
	<20070511034942.GE77635@deviant.kiev.zoral.com.ua>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20070511034942.GE77635@deviant.kiev.zoral.com.ua>
User-Agent: Mutt/1.5.13 (2006-08-11)
Cc: freebsd-current@freebsd.org
Subject: Re: SMP panic
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: Fri, 11 May 2007 04:35:49 -0000

On Fri, May 11, 2007 at 06:49:42AM +0300, Kostik Belousov wrote:
> On Fri, May 11, 2007 at 02:05:55PM +1200, Andrew Thompson wrote:
> > Hi,
> > 
> > 
> > I am having the following panic on my dual p3-500 box. I have tracked it
> > back to this commit[1], a HEAD cvs checkout of '2006-12-06 06:30 UTC' works
> > and '2006-12-06 06:35 UTC' panics. Removing SMP also avoids this panic.
> > 			= DPL 0, pres 1, def32 1, gran 1
> > processor eflags	= interrupt enabled, resume, IOPL = 0
> > current process		= 1 (swapper)
> > [thread pid 1 tid 100007 ]
> > Stopped at      uma_zalloc_arg+0x31:    pushl   0(%esi)
> > db> tr
> > Tracing pid 1 tid 100007 td 0xc298d360
> > uma_zalloc_arg(0,0,2) at uma_zalloc_arg+0x31
> > vfs_mount_alloc(0,c09a6940,c0913d40,c298d360,c0661a14,...) at vfs_mount_alloc+0x18
> > devfs_first(c0661a14,c0661a14,0,d3b38d04,c0661a5f,...) at devfs_first+0x36
> > vfs_mountroot(c298f000,c298d360,0,c0879c93,20,...) at vfs_mountroot+0x3e
> > start_init(0,d3b38d38) at start_init+0x4b
> > fork_exit(c0661a14,0,d3b38d38) at fork_exit+0xa8
> > fork_trampoline() at fork_trampoline+0x8
> > --- trap 0x1, eip = 0, esp = 0xd3b38d6c, ebp = 0 ---
> > db> 
> Creation of mount_zone in vfs_mount_root() failed, no idea why.

I have been looking into this and its failing on this section of code

sys/vm/uma_core.c:uma_zone_slab
        if (keg->uk_flags & UMA_ZFLAG_INTERNAL && keg->uk_recurse != 0)
                if ((zone != slabzone) && (zone != slabrefzone))
                        return (NULL);


I am able to boot now if I add (zone != zones) to the list of checks.
This only happens on SMP so is there some race?


Andrew