From owner-freebsd-hackers@FreeBSD.ORG Thu Jan 4 18:09:05 2007 Return-Path: X-Original-To: freebsd-hackers@freebsd.org Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 6332216A412 for ; Thu, 4 Jan 2007 18:09:05 +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 0AF5313C471 for ; Thu, 4 Jan 2007 18:09:04 +0000 (UTC) (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 l04I90Zt031471; Thu, 4 Jan 2007 13:09:00 -0500 (EST) (envelope-from jhb@freebsd.org) From: John Baldwin To: Kostik Belousov Date: Thu, 4 Jan 2007 12:50:16 -0500 User-Agent: KMail/1.9.1 References: <20070103141820.GA1014@grosbein.pp.ru> <200701031601.05541.jhb@freebsd.org> <20070104040727.GD21325@deviant.kiev.zoral.com.ua> In-Reply-To: <20070104040727.GD21325@deviant.kiev.zoral.com.ua> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200701041250.17335.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]); Thu, 04 Jan 2007 13:09:01 -0500 (EST) X-Virus-Scanned: ClamAV 0.88.3/2413/Thu Jan 4 04:46:27 2007 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: freebsd-hackers@freebsd.org, Eugene Grosbein Subject: Re: WITNESS & RELENG_6 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Jan 2007 18:09:05 -0000 On Wednesday 03 January 2007 23:07, Kostik Belousov wrote: > On Wed, Jan 03, 2007 at 04:01:04PM -0500, John Baldwin wrote: > > On Wednesday 03 January 2007 09:18, Eugene Grosbein wrote: > > > Hi! > > > > > > I try to find bugs in 6.2-PRERELEASE by using it (q) :-) > > > The question is: are kernel options WITNESS/WITNESS_KDB expected > > > to be in usable kernel? I don't worry about performance overhead here. > > > > > > The problem is, I've found this is nearly impossible to run > > > my home system with RELENG_6 build from yesterday's sources, > > > X.org 6.9.0, mplayer etc. without panicing and crashdump generation > > > after an hour or so. Just switch from X to vty and logon gave me another > > > LOR and crashdump. One of these you can see here: > > > > > > http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/107455 > > > > > > Perhaps, I should not use these options for everyday STABLE use? > > > > > > Eugene > > > > I think you are running into devfs bugs actually. > > I would suggest that the problem may be in the nvidia driver instead. > It seems to be related to dev cloning. > > Anyway, obtaining exact location of fault in devfs_populate_loop (either > with crashdump/kgdb or manually) would be first step. I know of at least one devfs cloning bug the nvidia driver ran into that phk@ verified is a bug in devfs, but I can't understand the patch well enough. I'll forward you the details. -- John Baldwin