Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754702Ab3JJDii (ORCPT ); Wed, 9 Oct 2013 23:38:38 -0400 Received: from mga01.intel.com ([192.55.52.88]:41343 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752523Ab3JJDih (ORCPT ); Wed, 9 Oct 2013 23:38:37 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.90,1068,1371106800"; d="scan'208";a="408625570" Date: Thu, 10 Oct 2013 11:38:34 +0800 From: Fengguang Wu To: Dave Chinner Cc: Dave Chinner , linux-fsdevel@vger.kernel.org, Ben Myers , linux-kernel@vger.kernel.org, xfs@oss.sgi.com, "ocfs2-devel@oss.oracle.com" Subject: Re: [XFS on bad superblock] BUG: unable to handle kernel NULL pointer dereference at 00000003 Message-ID: <20131010033834.GA13141@localhost> References: <20131009073910.GA387@localhost> <20131010005900.GE2025@devil.localdomain> <20131010011640.GA5726@localhost> <20131010014117.GA6017@localhost> <20131010031515.GT4446@dastard> <20131010032637.GA12725@localhost> <20131010033300.GA12952@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20131010033300.GA12952@localhost> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1286 Lines: 37 On Thu, Oct 10, 2013 at 11:33:00AM +0800, Fengguang Wu wrote: > On Thu, Oct 10, 2013 at 11:26:37AM +0800, Fengguang Wu wrote: > > Dave, > > > > > I note that you have CONFIG_SLUB=y, which means that the cache slabs > > > are shared with objects of other types. That means that the memory > > > corruption problem is likely to be caused by one of the other > > > filesystems that is probing the block device(s), not XFS. > > > > Good to know that, it would easy to test then: just turn off every > > other filesystems. I'll try it right away. > > Seems that we don't even need to do that. A dig through the oops > database and I find stack dumps from other FS. > > This happens in the kernel with same kconfig and commit 3.12-rc1. Here is a summary of all FS with oops: 411 ocfs2_fill_super 189 xfs_fs_fill_super 86 jfs_fill_super 50 isofs_fill_super 33 fat_fill_super 18 vfat_fill_super 15 msdos_fill_super 11 ext2_fill_super 10 ext3_fill_super 3 reiserfs_fill_super Thanks, Fengguang -- 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/