From: "Vegard Nossum" Subject: Re: ext3 on latest -git: BUG: unable to handle kernel NULL pointer dereference at 0000000c Date: Thu, 17 Jul 2008 15:39:24 +0200 Message-ID: <19f34abd0807170639p838d14blc9a13d2104313f38@mail.gmail.com> References: <19f34abd0807170551q4fbb862bu270297cfd76a69be@mail.gmail.com> <1b7401870807170613y747baa7by158177047cc7e28@mail.gmail.com> <19f34abd0807170620g39ab942bl592ea3fa3fa0dab@mail.gmail.com> <1b7401870807170634u14492a53k3931ddcddbd1e098@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: linux-ext4@vger.kernel.org, sct@redhat.com, akpm@linux-foundation.org, adilger@sun.com, "Johannes Weiner" , linux-kernel@vger.kernel.org To: "Josef Bacik" Return-path: Received: from wf-out-1314.google.com ([209.85.200.175]:9711 "EHLO wf-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754882AbYGQNjZ (ORCPT ); Thu, 17 Jul 2008 09:39:25 -0400 Received: by wf-out-1314.google.com with SMTP id 27so5996237wfd.4 for ; Thu, 17 Jul 2008 06:39:25 -0700 (PDT) In-Reply-To: <1b7401870807170634u14492a53k3931ddcddbd1e098@mail.gmail.com> Content-Disposition: inline Sender: linux-ext4-owner@vger.kernel.org List-ID: On Thu, Jul 17, 2008 at 3:34 PM, Josef Bacik wrote: >> Yeah, the full log exists at >> >> http://folk.uio.no/vegardno/linux/log-1216293934.txt >> >> I think this is the interesting part: > > Hmm well the journal should have aborted, but it looks like it didn't, > are you mounting with errors=continue by any chance? Thanks much, No, this is the command I used: mount -o loop disk mnt I think this looks interesting: EXT3-fs error (device loop0) in ext3_reserve_inode_write: IO failure The code in ext3_reserve_inode_write() is here: err = ext3_journal_get_write_access(handle, iloc->bh); if (err) { brelse(iloc->bh); iloc->bh = NULL; } Maybe it should do something different here? But I don't know :-) Thanks for helping out! Vegard -- "The animistic metaphor of the bug that maliciously sneaked in while the programmer was not looking is intellectually dishonest as it disguises that the error is the programmer's own creation." -- E. W. Dijkstra, EWD1036