From owner-freebsd-current@FreeBSD.ORG  Wed Aug 16 17:35:45 2006
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 [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id A62B016A5A5;
	Wed, 16 Aug 2006 17:35:45 +0000 (UTC) (envelope-from jhb@freebsd.org)
Received: from server.baldwin.cx (66-23-211-162.clients.speedfactory.net
	[66.23.211.162])
	by mx1.FreeBSD.org (Postfix) with ESMTP id A3BF043D46;
	Wed, 16 Aug 2006 17:35:44 +0000 (GMT) (envelope-from jhb@freebsd.org)
Received: from localhost.corp.yahoo.com (john@localhost [127.0.0.1])
	(authenticated bits=0)
	by server.baldwin.cx (8.13.6/8.13.6) with ESMTP id k7GHZgBq040251;
	Wed, 16 Aug 2006 13:35:43 -0400 (EDT) (envelope-from jhb@freebsd.org)
From: John Baldwin <jhb@freebsd.org>
To: freebsd-current@freebsd.org
Date: Wed, 16 Aug 2006 12:56:36 -0400
User-Agent: KMail/1.9.1
References: <20060816155310.GA64420@peter.osted.lan>
In-Reply-To: <20060816155310.GA64420@peter.osted.lan>
MIME-Version: 1.0
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Message-Id: <200608161256.37149.jhb@freebsd.org>
X-Greylist: Sender succeeded SMTP AUTH authentication, not delayed by
	milter-greylist-2.0.2 (server.baldwin.cx [127.0.0.1]);
	Wed, 16 Aug 2006 13:35:43 -0400 (EDT)
X-Virus-Scanned: ClamAV 0.88.3/1671/Wed Aug 16 11:29:02 2006 on
	server.baldwin.cx
X-Virus-Status: Clean
X-Spam-Status: No, score=-4.4 required=4.2 tests=ALL_TRUSTED,AWL,BAYES_00 
	autolearn=ham version=3.1.3
X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on server.baldwin.cx
Cc: current@freebsd.org
Subject: Re: Livelock while accessing /tmp
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: Wed, 16 Aug 2006 17:35:45 -0000

On Wednesday 16 August 2006 11:53, Peter Holm wrote:
> While stress testing GENERIC HEAD from Aug 12 12:55 UTC I got this
> lock whenever a proccess accesses /tmp via a loopback nfs mount.
> More info @ http://people.freebsd.org/~pho/stress/log/cons205.html

FYI, 'show sleepchain <pid>' will directly show the deadlock in the future.  I
have a gdb script equivalent I can give you to run on the core dump if you 
want.

-- 
John Baldwin