From owner-freebsd-stable@FreeBSD.ORG Thu Aug 11 17:15:10 2011 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 F25ED1065672; Thu, 11 Aug 2011 17:15:10 +0000 (UTC) (envelope-from prvs=1204ca57bc=killing@multiplay.co.uk) Received: from mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) by mx1.freebsd.org (Postfix) with ESMTP id EFD838FC13; Thu, 11 Aug 2011 17:15:09 +0000 (UTC) X-MDAV-Processed: mail1.multiplay.co.uk, Thu, 11 Aug 2011 18:14:35 +0100 X-Spam-Processed: mail1.multiplay.co.uk, Thu, 11 Aug 2011 18:14:34 +0100 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on mail1.multiplay.co.uk X-Spam-Level: X-Spam-Status: No, score=-5.0 required=6.0 tests=USER_IN_WHITELIST shortcircuit=ham autolearn=disabled version=3.2.5 Received: from r2d2 ([188.220.16.49]) by mail1.multiplay.co.uk (mail1.multiplay.co.uk [85.236.96.23]) (MDaemon PRO v10.0.4) with ESMTP id md50014562616.msg; Thu, 11 Aug 2011 18:14:34 +0100 X-MDRemoteIP: 188.220.16.49 X-Return-Path: prvs=1204ca57bc=killing@multiplay.co.uk X-Envelope-From: killing@multiplay.co.uk Message-ID: <6F08A8DE780545ADB9FA93B0A8AA4DA1@multiplay.co.uk> From: "Steven Hartland" To: "Andriy Gapon" References: <47F0D04ADF034695BC8B0AC166553371@multiplay.co.uk><4E4380C0.7070908@FreeBSD.org> <4E43E272.1060204@FreeBSD.org> <62BF25D0ED914876BEE75E2ADF28DDF7@multiplay.co.uk> <4E440865.1040500@FreeBSD.org> Date: Thu, 11 Aug 2011 18:14:05 +0100 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6109 Cc: freebsd-stable@FreeBSD.org Subject: Re: debugging frequent kernel panics on 8.2-RELEASE 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: Thu, 11 Aug 2011 17:15:11 -0000 ----- Original Message ----- From: "Andriy Gapon" >>> I would really appreciate if you could try to reproduce the >>> problem with the patch that I sent earlier. >> >> Hi Andriy, what's the risk of this patch causing other issues? > > I can not estimate. > The code is supposed to affect only things that happen after panic, > so make your guess. So in theory should be good. >> I ask as to get results from this we've going to have to roll it >> out to over 130+ production machines, so I'd like to be clear on >> the risks before I sign that off. > > I will be happy if you try the patch on a single machine > provided the problem is that reproducible. Unfortunately although its happening a lot its taking the large numbers of machines to make it that way. Over the 130+ machines we're seeing between 3 and 8 panics a day, so based on that we could be waiting quite some time for a specific machine to panic :( Don't think we're going to make any progress on this in the current state so I think we'll give it a shot. Regards Steve ================================================ This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmaster@multiplay.co.uk.