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Date: Tue, 11 Mar 2014 17:20:24 +0400
From: Cyrill Gorcunov <gorcunov@gmail.com>
Subject: Re: bad rss-counter message in 3.14rc5
Message-ID: <20140311132024.GC32390@moon>
References: <20140305174503.GA16335@redhat.com>
 <20140305175725.GB16335@redhat.com>
 <20140307002210.GA26603@redhat.com>
 <20140311024906.GA9191@redhat.com>
 <20140310201340.81994295.akpm@linux-foundation.org>
 <20140310214612.3b4de36a.akpm@linux-foundation.org>
 <20140311045109.GB12551@redhat.com>
 <20140310220158.7e8b7f2a.akpm@linux-foundation.org>
 <20140311053017.GB14329@redhat.com>
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To: Dave Jones <davej@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, Linux Kernel <linux-kernel@vger.kernel.org>, linux-mm@kvack.org, Linus Torvalds <torvalds@linux-foundation.org>, Sasha Levin <sasha.levin@oracle.com>, Joonsoo Kim <iamjoonsoo.kim@lge.com>, Bob Liu <bob.liu@oracle.com>, Konstantin Khlebnikov <koct9i@gmail.com>

On Tue, Mar 11, 2014 at 01:30:17AM -0400, Dave Jones wrote:
>  > >  > 
>  > >  > I don't see any holes in regular migration.  Do you know if this is
>  > >  > reproducible with CONFIG_NUMA_BALANCING=n or CONFIG_NUMA=n?
>  > > 
>  > > CONFIG_NUMA_BALANCING was n already btw, so I'll do a NUMA=n run.
>  > 
>  > There probably isn't much point unless trinity is using
>  > sys_move_pages().  Is it?  If so it would be interesting to disable
>  > trinity's move_pages calls and see if it still fails.
> 
> Ok, with move_pages excluded it still oopses.

Dave, is it possible to somehow figure out was someone reading pagemap file
at moment of the bug triggering?

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