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Re: 3.14.0-rc2: WARNING: at mm/slub.c:1007

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: 3.14.0-rc2: WARNING: at mm/slub.c:1007
From: Christian Kujau <lists@xxxxxxxxxxxxxxx>
Date: Thu, 13 Feb 2014 15:34:19 -0800 (PST)
Cc: LKML <linux-kernel@xxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx, linux-mm@xxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <20140213222602.GK13997@dastard>
References: <alpine.DEB.2.19.4.1402131144390.6233@xxxxxxxxxxxxxx> <20140213222602.GK13997@dastard>
User-agent: Alpine 2.19.4 (DEB 40 2013-11-18)
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.

Christian.
-- 
BOFH excuse #108:

The air conditioning water supply pipe ruptured over the machine room

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