From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fengguang Wu Subject: Re: [XFS on bad superblock] BUG: unable to handle kernel NULL pointer dereference at 00000003 Date: Thu, 10 Oct 2013 11:38:34 +0800 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-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, xfs@oss.sgi.com, Ben Myers , Dave Chinner , linux-fsdevel@vger.kernel.org, "ocfs2-devel@oss.oracle.com" To: Dave Chinner Return-path: Content-Disposition: inline In-Reply-To: <20131010033300.GA12952@localhost> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com List-Id: linux-fsdevel.vger.kernel.org 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 _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs