linux-kernel - Re: divide error: 0000 [#1] SMP in task_numa_migrate

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Message-ID: <20160711223353.GA8959@kroah.com>
Date:	Mon, 11 Jul 2016 15:33:53 -0700
From:	Greg KH <greg@...ah.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Campbell Steven <casteven@...il.com>,
	Stefan Priebe - Profihost AG <s.priebe@...fihost.ag>,
	Vlastimil Babka <vbabka@...e.cz>,
	LKML <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	linux-mm@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
	Rik van Riel <riel@...hat.com>
Subject: Re: divide error: 0000 [#1] SMP in task_numa_migrate -
 handle_mm_fault vanilla 4.4.6

On Thu, Jul 07, 2016 at 09:42:32AM +0200, Peter Zijlstra wrote:
> On Thu, Jul 07, 2016 at 11:20:36AM +1200, Campbell Steven wrote:
> 
> > > commit 8974189222159154c55f24ddad33e3613960521a
> > > Author: Peter Zijlstra <peterz@...radead.org>
> > > Date:   Thu Jun 16 10:50:40 2016 +0200
> 
> > Since these early reports from Stefan and I it looks like it's been
> > hit but alot more folks now so I'd like to ask what the process is for
> > getting this backported into 4.6, 4.5 and 4.4 as in our testing all
> > those versions for their latest point release seem to have the same
> > problem.
> 
> I think this should do; Greg is on Cc and will mark the commit
> somewhere. It is already in Linus' tree and should indeed be sufficient.
> 
> It has a Fixes tag referring the commit that introduced it, which IIRC
> is somewhere around v4.2.
> 
> Greg, anything else required?

Oops, this commit does not apply cleanly to 4.6 or 4.4-stable trees.
Can someone send me the backported verision that they have tested to
work properly so I can queue it up?

thanks,

greg k-h