Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932281AbWHQVXm (ORCPT ); Thu, 17 Aug 2006 17:23:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932316AbWHQVXm (ORCPT ); Thu, 17 Aug 2006 17:23:42 -0400 Received: from nf-out-0910.google.com ([64.233.182.185]:52590 "EHLO nf-out-0910.google.com") by vger.kernel.org with ESMTP id S932281AbWHQVXl (ORCPT ); Thu, 17 Aug 2006 17:23:41 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=Henuhd8bEfBM5fohFEUqsDiHq8N7AGxDvbILUz6lKpLJRZ0ptcjlwQBaU8O6iVLxCa+84dVU559qPR0ai6CwE0UH7b1tO488vAYafF3OPtDZyrLiQ6LHjRfBW9F5tED3by0dZgN+aFJ1eyw62/b67B02i/hEN4hBDYAK/6e2tfY= Message-ID: <9a8748490608171423w3e5f7007nf92fad74637f0dd3@mail.gmail.com> Date: Thu, 17 Aug 2006 23:23:39 +0200 From: "Jesper Juhl" To: "Nathan Scott" Subject: Re: 2.6.18-rc3-git3 - XFS - BUG: unable to handle kernel NULL pointer dereference at virtual address 00000078 Cc: linux-kernel@vger.kernel.org, xfs@oss.sgi.com In-Reply-To: <20060816112630.C2756824@wobbly.melbourne.sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <9a8748490608100431m244207b1v9c9c5087233fcf3a@mail.gmail.com> <9a8748490608101544n29f863e7o7584ac64f1d4c210@mail.gmail.com> <9a8748490608101552w12822fa6m415a5fb5537c744d@mail.gmail.com> <9a8748490608110133v5f973cf6w1af340f59bb229ec@mail.gmail.com> <9a8748490608110325k25c340e2yac925eb226d1fe4f@mail.gmail.com> <20060814120032.E2698880@wobbly.melbourne.sgi.com> <9a8748490608140049t492742cx7f826a9f40835d71@mail.gmail.com> <20060815190343.A2743401@wobbly.melbourne.sgi.com> <9a8748490608150442q4ad7a835r53400e9880da3175@mail.gmail.com> <20060816112630.C2756824@wobbly.melbourne.sgi.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1809 Lines: 43 On 16/08/06, Nathan Scott wrote: > On Tue, Aug 15, 2006 at 01:42:27PM +0200, Jesper Juhl wrote: > > On 15/08/06, Nathan Scott wrote: > > > If you can get the source > > > and target names in the rename that'll help alot too... I can > > > explain how to use KDB to get that, but maybe you have another > > > debugger handy already? > > > > > An explanation of how exactely to do that would be greatly appreciated. > > - patch in KDB > - echo 127 > /proc/sys/fs/xfs/panic_mask > [ filesystem shutdown now == panic ] > - kdb> bt > [ pick out parameters to rename from the backtrace ] > - kdb> md 0xXXX > [ gives a memory dump of the pointers to pathnames ] > Thanks a lot for the explanation. Unfortunately I didn't get a chance to run new tests on the server this week (always the big problem when it's a production machine). I'm also going on a short vacation, so I won't have the oppotunity to try and recreate a simpler test case at home for the next few days. When I get back (in some 4 days time) I'll try to build a more simple test case and in about a week or so I hopefully will get a new chance to run new tests on the server that has so far shown the problem. If there are additional tests you want me to run or data you want me to collect, then let me know and I'll do so the first chance I get. I'll be back in touch in ~1 weeks time. -- Jesper Juhl Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html Plain text mails only, please http://www.expita.com/nomime.html - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/