From owner-freebsd-stable@FreeBSD.ORG Sun Jul 3 08:32:35 2005 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1A73316A41C for ; Sun, 3 Jul 2005 08:32:35 +0000 (GMT) (envelope-from Philippe.Pegon@crc.u-strasbg.fr) Received: from mailhost.u-strasbg.fr (mailhost.u-strasbg.fr [130.79.200.154]) by mx1.FreeBSD.org (Postfix) with ESMTP id 86CE343D45 for ; Sun, 3 Jul 2005 08:32:34 +0000 (GMT) (envelope-from Philippe.Pegon@crc.u-strasbg.fr) Received: from sokaris.u-strasbg.fr (sokaris.u-strasbg.fr [IPv6:2001:660:2402::101]) by mailhost.u-strasbg.fr (8.13.3/jtpda-5.5pre1) with ESMTP id j638WXRe006817 ; Sun, 3 Jul 2005 10:32:33 +0200 (CEST) Received: from [192.168.0.100] (crc.u-strasbg.fr [IPv6:2001:660:2402:1001::1]) by sokaris.u-strasbg.fr (8.12.9/jtpda-5.5pre1) with ESMTP id j638WVtt098251 ; Sun, 3 Jul 2005 10:32:32 +0200 (CEST) Message-ID: <42C7A422.30709@crc.u-strasbg.fr> Date: Sun, 03 Jul 2005 10:38:58 +0200 From: Philippe PEGON User-Agent: Mozilla Thunderbird 1.0.2 (X11/20050602) X-Accept-Language: fr, en MIME-Version: 1.0 To: Kris Kennaway References: <20050701101458.GA1193@stack.nl> <20050701104139.GB1193@stack.nl> <20050701130335.GA2040@stack.nl> <20050701182946.GA99767@xor.obsecurity.org> In-Reply-To: <20050701182946.GA99767@xor.obsecurity.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.6 (mailhost.u-strasbg.fr [IPv6:2001:660:2402::154]); Sun, 03 Jul 2005 10:32:33 +0200 (CEST) X-Virus-Scanned: ClamAV version 0.86.1, clamav-milter version 0.86 on mr4.u-strasbg.fr X-Virus-Status: Clean X-Antivirus: scanned by sophos at u-strasbg.fr Cc: Marc Olzheim , freebsd-stable@freebsd.org Subject: Re: Today's RELENG_5_4 and 'lock cmpxchgl' 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: Sun, 03 Jul 2005 08:32:35 -0000 Kris Kennaway a écrit : > On Fri, Jul 01, 2005 at 03:03:35PM +0200, Marc Olzheim wrote: > >>On Fri, Jul 01, 2005 at 12:41:39PM +0200, Marc Olzheim wrote: >> >>>On Fri, Jul 01, 2005 at 12:14:58PM +0200, Marc Olzheim wrote: >>> >>>>Somehow, this sounds familiar, i.e.: the "lock cmpxchgl": >>>> >>>>Fatal trap 12: page fault while in kernel mode >>> >>>... >>> >>>>Stopped at 0xc05160c3 = knote+0x27: lock cmpxchgl %ecx,0x1c(%edx) >>> >>>Somehow I think I solved this last time by activating 'INVARIANTS'... >>>I'll try that now. >> >>Let's paraphrase: >> >>I think i solved this last time by activating 'INVARIANTS'... >> >>Anyway, tried that and yes, it didn't crash in the last few hours, so I >>guess it works. Without INVARIANTS, it crashed within seconds. >> >>On the downside, my Gigabit performance dropped from 99 MB/sec to 80 >>MB/sec because of INVARIANTS. > > > The panic appears to be an instance of a known bug in 5.4 (and > INVARIANTS will not fix it, but may just delay the inevitable by > changing timings). See Doug White's recent emails which point to a > patch you should test. If you think about this mail : http://lists.freebsd.org/mailman/htdig/freebsd-stable/2005-June/016165.html and follow the thread, you will see that this patch doesn't solve the problem. The last mail which I can see from doug white about this problem is : http://lists.freebsd.org/mailman/htdig/freebsd-stable/2005-June/016495.html for the moment, it seems that there is no solution for 5.x > > Kris -- Philippe PEGON