From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pb0-f49.google.com (mail-pb0-f49.google.com [209.85.160.49]) by kanga.kvack.org (Postfix) with ESMTP id 8C32B6B0031 for ; Thu, 13 Feb 2014 20:20:12 -0500 (EST) Received: by mail-pb0-f49.google.com with SMTP id up15so11544844pbc.22 for ; Thu, 13 Feb 2014 17:20:12 -0800 (PST) Received: from ipmail06.adl6.internode.on.net (ipmail06.adl6.internode.on.net. [2001:44b8:8060:ff02:300:1:6:6]) by mx.google.com with ESMTP id xf4si3786960pab.220.2014.02.13.17.20.10 for ; Thu, 13 Feb 2014 17:20:11 -0800 (PST) Date: Fri, 14 Feb 2014 12:14:53 +1100 From: Dave Chinner Subject: Re: 3.14.0-rc2: WARNING: at mm/slub.c:1007 Message-ID: <20140214011453.GP13997@dastard> References: <20140213222602.GK13997@dastard> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: Christian Kujau Cc: LKML , xfs@oss.sgi.com, linux-mm@kvack.org On Thu, Feb 13, 2014 at 03:34:19PM -0800, Christian Kujau wrote: > On Fri, 14 Feb 2014 at 09:26, Dave Chinner wrote: > > > after upgrading from 3.13-rc8 to 3.14.0-rc2 on this PowerPC G4 machine, > > > the WARNING below was printed. > > > > > > Shortly after, a lockdep warning appeared (possibly related to my > > > post to the XFS list yesterday[0]). > > > > Unlikely. > > OK, so the "possible irq lock inversion dependency detected" is a lockdep > regression, as you explained in the xfs-list thread. What about the > "RECLAIM_FS-safe -> RECLAIM_FS-unsafe lock order detected" warning - I > haven't seen it again though, only once with 3.14.0-rc2. That was also an i_lock/mmapsem issue, so it's likely to be the same root cause. I'm testing a fix for it at the moment. Cheers, Dave. -- Dave Chinner david@fromorbit.com -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org