From owner-freebsd-stable@FreeBSD.ORG  Wed Jan 13 10:54:16 2010
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 6CEC9106566B;
	Wed, 13 Jan 2010 10:54:16 +0000 (UTC)
	(envelope-from petefrench@ticketswitch.com)
Received: from constantine.ticketswitch.com (constantine.ticketswitch.com
	[IPv6:2002:57e0:1d4e:1::3])
	by mx1.freebsd.org (Postfix) with ESMTP id 34F738FC08;
	Wed, 13 Jan 2010 10:54:16 +0000 (UTC)
Received: from dilbert.rattatosk ([10.64.50.6] helo=dilbert.ticketswitch.com)
	by constantine.ticketswitch.com with esmtps (TLSv1:AES256-SHA:256)
	(Exim 4.69 (FreeBSD)) (envelope-from <petefrench@ticketswitch.com>)
	id 1NV0rV-000PEK-7W; Wed, 13 Jan 2010 10:54:05 +0000
Received: from petefrench by dilbert.ticketswitch.com with local (Exim 4.71
	(FreeBSD)) (envelope-from <petefrench@ticketswitch.com>)
	id 1NV0rV-0002ve-6f; Wed, 13 Jan 2010 10:54:05 +0000
Date: Wed, 13 Jan 2010 10:54:05 +0000
Message-Id: <E1NV0rV-0002ve-6f@dilbert.ticketswitch.com>
To: attilio@freebsd.org, freebsd-stable@freebsd.org
In-Reply-To: <3bbf2fe11001130112l26f7370dr2e282455a934a0b@mail.gmail.com>
From: Pete French <petefrench@ticketswitch.com>
Cc: 
Subject: Re: [PATCH] Lockmgr deadlock on STABLE_8
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: Wed, 13 Jan 2010 10:54:16 -0000

> In order to allow a MFC, a similar approach, being a bit sub-optimal,
> but not breaking ABI, has been prepared for STABLE_8:
> http://www.freebsd.org/~attilio/lockmgr_fix8.diff
>
> I'm seeking for testers here.
> Any report would be very much appreciated.

I'll give this a shot - I ahve a machine running 8.0 which shows
occasional lockups (though annoyingly not with WITNESS in the
kernel). I shall update to the latest stable, apply the patch and
run GENERIC on it to see what happens.

cheeers,

-pete.