Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750776AbWHPB0s (ORCPT ); Tue, 15 Aug 2006 21:26:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750800AbWHPB0s (ORCPT ); Tue, 15 Aug 2006 21:26:48 -0400 Received: from omx2-ext.sgi.com ([192.48.171.19]:34473 "EHLO omx2.sgi.com") by vger.kernel.org with ESMTP id S1750776AbWHPB0r (ORCPT ); Tue, 15 Aug 2006 21:26:47 -0400 Date: Wed, 16 Aug 2006 11:26:30 +1000 From: Nathan Scott To: Jesper Juhl Cc: linux-kernel@vger.kernel.org, xfs@oss.sgi.com Subject: Re: 2.6.18-rc3-git3 - XFS - BUG: unable to handle kernel NULL pointer dereference at virtual address 00000078 Message-ID: <20060816112630.C2756824@wobbly.melbourne.sgi.com> References: <9a8748490608100431m244207b1v9c9c5087233fcf3a@mail.gmail.com> <20060811083546.B2596458@wobbly.melbourne.sgi.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> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <9a8748490608150442q4ad7a835r53400e9880da3175@mail.gmail.com>; from jesper.juhl@gmail.com on Tue, Aug 15, 2006 at 01:42:27PM +0200 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 874 Lines: 26 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 ] cheers. -- Nathan - 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/