From owner-freebsd-hackers@FreeBSD.ORG Thu Aug 18 11:26:06 2011 Return-Path: Delivered-To: freebsd-hackers@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 17692106566C; Thu, 18 Aug 2011 11:26:06 +0000 (UTC) (envelope-from prvs=12111cb08a=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 08B508FC16; Thu, 18 Aug 2011 11:26:04 +0000 (UTC) X-MDAV-Processed: mail1.multiplay.co.uk, Thu, 18 Aug 2011 12:24:30 +0100 X-Spam-Processed: mail1.multiplay.co.uk, Thu, 18 Aug 2011 12:24:30 +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 md50014646198.msg; Thu, 18 Aug 2011 12:24:29 +0100 X-MDRemoteIP: 188.220.16.49 X-Return-Path: prvs=12111cb08a=killing@multiplay.co.uk X-Envelope-From: killing@multiplay.co.uk Message-ID: From: "Steven Hartland" To: "Andriy Gapon" References: uk> <4E4CD98C.1000301@FreeBSD.org> <4E4CF347.6030908@FreeBSD.org> Date: Thu, 18 Aug 2011 12:25:12 +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-hackers@FreeBSD.org, freebsd-jail@FreeBSD.org, freebsd-stable@FreeBSD.org Subject: Re: debugging frequent kernel panics on 8.2-RELEASE 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, 18 Aug 2011 11:26:06 -0000 ----- Original Message ----- From: "Andriy Gapon" > Probably I have mistakenly assumed that the 'prison' in prison_derefer() has > something to do with an actual jail, while it could have been just prison0 where > all non-jailed processes belong. That makes sense as this particular panic was caused by a machine reboot, which is slightly different from the more common jail panic we're seeing. Doesn't help with our reproduction scenario though unfortunately. If we don't have any joy reproducing on our single test machine I'll have this kernel rolled out across a portion of the farm, which should mean we see the panic results in a few days time. I understand there's a risk involved in this but, its important for us to determine the cause and get a confirmed fix, as well as being able to prove that the panic fix works which will help everyone in the long run. 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.