From: Valerie Clement Subject: Re: [PATCH RESEND] ext4: Fix kernel BUG at fs/ext4/mballoc.c:910! Date: Fri, 15 Feb 2008 16:18:28 +0100 Message-ID: <47B5AD44.8010305@bull.net> References: <1203006909.8970.20.camel@ext1.frec.bull.fr> <47B46E71.805@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-ext4 To: Eric Sandeen Return-path: Received: from ecfrec.frec.bull.fr ([129.183.4.8]:34143 "EHLO ecfrec.frec.bull.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751404AbYBOPRY (ORCPT ); Fri, 15 Feb 2008 10:17:24 -0500 In-Reply-To: <47B46E71.805@redhat.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: Eric Sandeen wrote: > Valerie Clement wrote: >> Fix kernel BUG at fs/ext4/mballoc.c:910! >> >> From: Valerie Clement >> >> With the flex_bg feature enabled, a large file creation oopses the >> kernel. > > Valerie, what's the specific testcase for this? > > Thanks, > -Eric I just did a simple dd, dd if=/dev/zero of=/mnt/test/foo bs=1M count=8k on an ext4 filesystem with the uninit_groups, lazy_bg and flex_bg features enabled and the default mount options. The difficulty is to build e2fsprogs programs that integrate all these new features together. Valerie