From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthias Erll Subject: Re: [Bug 42859] New: kernel BUG at fs/ext4/extents.c:1953 Date: Sun, 04 Mar 2012 23:11:00 +0100 Message-ID: <4F53E874.5050201@web.de> References: <20120304202708.GA9087@thunk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: linux-ext4@vger.kernel.org, bugzilla-daemon@bugzilla.kernel.org To: Ted Ts'o Return-path: Received: from fmmailgate04.web.de ([217.72.192.242]:59361 "EHLO fmmailgate04.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755727Ab2CDWLD (ORCPT ); Sun, 4 Mar 2012 17:11:03 -0500 Received: from moweb001.kundenserver.de (moweb001.kundenserver.de [172.19.20.114]) by fmmailgate04.web.de (Postfix) with ESMTP id 34A4D7322459 for ; Sun, 4 Mar 2012 23:11:02 +0100 (CET) In-Reply-To: <20120304202708.GA9087@thunk.org> Sender: linux-ext4-owner@vger.kernel.org List-ID: Hi Ted, Am 04.03.12 21:27, schrieb Ted Ts'o: > On Sun, Mar 04, 2012 at 02:39:09PM +0000, bugzilla-daemon@bugzilla.kernel.org wrote: >> Messages "kernel BUG at fs/ext4/extents.c:1953" occur, which seem to be >> triggered when running certain processes (reproducible with init and gdm). The >> volume can be mounted without any apparent problems and e2fsck does not report >> any errors. Nevertheless, the file system may have been corrupted during an >> earlier system crash. > Would you be willing to apply the following patch, and then see which > inode number gets reported (and whether it is always the same inode > number or one that varies) and then report back the results of running > the following debugfs commands? > > (assuming the inode number is 12345) > > debugfs /dev/sdX > > debugfs: stat <12345> > degbufs: ex <12345> In the three cases I can reproduce, the inode number has been identical. Please find the debugfs output below. Kind regards, Matthias debugfs /dev/sda2 debugfs 1.42.1 (17-Feb-2012) debugfs: stat <1312385> Inode: 1312385 Type: regular Mode: 0664 Flags: 0x80000 Generation: 1339335381 Version: 0x00000000:00000001 User: 0 Group: 406 Size: 0 File ACL: 0 Directory ACL: 0 Links: 1 Blockcount: 0 Fragment: Address: 0 Number: 0 Size: 0 ctime: 0x4f53e0ab:3c51ed20 -- Sun Mar 4 22:37:47 2012 atime: 0x4eda803c:da6fb35c -- Sat Dec 3 21:02:04 2011 mtime: 0x4f53e0ab:3bd7da30 -- Sun Mar 4 22:37:47 2012 crtime: 0x4eda803c:da6fb35c -- Sat Dec 3 21:02:04 2011 Size of extra inode fields: 28 EXTENTS: debugfs: ex <1312385> Level Entries Logical Physical Length Flags 0/ 0 1/ 1 0 - 4294967295 5276276 - 4300243571 0