From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from hera.mpi-klsb.mpg.de ([139.19.1.49]:51097 "EHLO hera.mpi-klsb.mpg.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161325Ab3LFOJJ (ORCPT ); Fri, 6 Dec 2013 09:09:09 -0500 Message-ID: <52A1DA80.4000203@mpi-sws.org> Date: Fri, 06 Dec 2013 15:09:04 +0100 From: Pedro Fonseca MIME-Version: 1.0 To: bo.li.liu@oracle.com CC: linux-btrfs@vger.kernel.org Subject: Re: Null pointer oops when deleting item in btrfs_find_all_root() References: <52A1CAA5.8090302@mpi-sws.org> <20131206135836.GD20595@localhost.localdomain> In-Reply-To: <20131206135836.GD20595@localhost.localdomain> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 12/06/2013 02:58 PM, Liu Bo wrote: > On Fri, Dec 06, 2013 at 02:01:25PM +0100, Pedro Fonseca wrote: >> Hi, >> >> I've encountered another null pointer bug in btrfs_find_all_root(). >> >> It may be releated to a bug I previously reported to the mailing >> list ("Null pointer dereference bug in btrfs_find_all_root"). But >> this test ran on kernel version 3.12.2 and the oops was triggered >> when deleting an item from the list. The actual workload (i.e. FS >> operations) is similar though. > Not sure if the following commit[1] has been merged in this 3.12.2, > any chance to check it? > > -liubo > > > [1]: > commit 48ec47364b6d493f0a9cdc116977bf3f34e5c3ec > Author: Liu Bo > Date: Wed Oct 30 13:25:24 2013 +0800 > > Btrfs: fix a crash when running balance and defrag concurrently > You're right, that patch didn't make it to 3.12.2. I'll try to run the tests with the patch. Pedro