From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda1.sgi.com [192.48.157.11]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id q3UNCRUV047377 for ; Mon, 30 Apr 2012 18:12:27 -0500 Received: from ipmail05.adl6.internode.on.net (ipmail05.adl6.internode.on.net [150.101.137.143]) by cuda.sgi.com with ESMTP id 2sR51ZlBIkFehGal for ; Mon, 30 Apr 2012 16:12:25 -0700 (PDT) Date: Tue, 1 May 2012 09:12:23 +1000 From: Dave Chinner Subject: Re: Assertion failed: RB_EMPTY_NODE(&bp->b_rbnode) Message-ID: <20120430231223.GN7015@dastard> References: <1335160747-17254-1-git-send-email-david@fromorbit.com> <20120430143200.GL16881@sgi.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20120430143200.GL16881@sgi.com> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Ben Myers Cc: xfs@oss.sgi.com On Mon, Apr 30, 2012 at 09:32:00AM -0500, Ben Myers wrote: > While testing this patchset without Jan's freeze work, I hit this assert. I > believe I have not seen this one before. > > -Ben > > [36850.416217] XFS: Assertion failed: RB_EMPTY_NODE(&bp->b_rbnode), file: /work/xfs/fs/xfs/xfs_buf.c, line: 838 > [36850.445669] BUG: unable to handle kernel NULL pointer dereference at 0000000000000038 Two problems - the BUG seems to be one that you have reported before, while the assert failure tends to indicate a use after free situation on a buffer (i.e. a log buffer has been torn down while IO is still in progress). That smells like different symptoms of the same problem.... I think you are going to have to debug this one, Ben, because I have not seen anything at all like these problems on any of my test or stress workloads. I don't even know what test you are running at the time these failures are occurring, so I can't even start looking... Cheers, Dave. -- Dave Chinner david@fromorbit.com _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs