From owner-freebsd-stable@FreeBSD.ORG Fri May 1 15:53:58 2009 Return-Path: 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 6C3001065675 for ; Fri, 1 May 2009 15:53:58 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42]) by mx1.freebsd.org (Postfix) with ESMTP id 3F8E48FC18 for ; Fri, 1 May 2009 15:53:58 +0000 (UTC) (envelope-from jhb@freebsd.org) Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net [66.111.2.69]) by cyrus.watson.org (Postfix) with ESMTPSA id EBCA146B82; Fri, 1 May 2009 11:53:57 -0400 (EDT) Received: from jhbbsd.hudson-trading.com (unknown [209.249.190.8]) by bigwig.baldwin.cx (Postfix) with ESMTPA id E547B8A023; Fri, 1 May 2009 11:53:56 -0400 (EDT) From: John Baldwin To: freebsd-stable@freebsd.org Date: Fri, 1 May 2009 09:49:45 -0400 User-Agent: KMail/1.9.7 References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200905010949.45927.jhb@freebsd.org> X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.0.1 (bigwig.baldwin.cx); Fri, 01 May 2009 11:53:56 -0400 (EDT) X-Virus-Scanned: clamav-milter 0.95 at bigwig.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-1.4 required=4.2 tests=AWL,BAYES_00,RDNS_NONE autolearn=no version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on bigwig.baldwin.cx Cc: pluknet Subject: Re: lock up in 6.2 (procs massively stuck in Giant) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 01 May 2009 15:53:58 -0000 On Thursday 30 April 2009 2:36:34 am pluknet wrote: > Hi folks. > > Today I got a new locking issue. > This is the first time I got it, and it's merely reproduced. > > The box has lost both remote connection and local access. > No SIGINFO output on the local console even. > Jumping in ddb> shows the next: > > 1) first, this is a 8-way web server. No processes on runqueue except one httpd > (i.e. ps shows R in its state): You need to find who owns Giant and what that thread is doing. You can try using 'show lock Giant' as well as 'show lockchain 11568'. -- John Baldwin