Re: BUG: mm, numa: test segfaults, only when NUMA balancing is on

From: Alex Thorlton
Date: Mon Nov 04 2013 - 15:04:14 EST

On Mon, Nov 04, 2013 at 02:58:28PM +0000, Mel Gorman wrote:
> On Wed, Oct 16, 2013 at 10:54:29AM -0500, Alex Thorlton wrote:
> > Hi guys,
> >
> > I ran into a bug a week or so ago, that I believe has something to do
> > with NUMA balancing, but I'm having a tough time tracking down exactly
> > what is causing it. When running with the following configuration
> > options set:
> >
> Can you test with patches
> cd65718712469ad844467250e8fad20a5838baae..0255d491848032f6c601b6410c3b8ebded3a37b1
> applied? They fix some known memory corruption problems, were merged for
> 3.12 (so alternatively just test 3.12) and have been tagged for -stable.

I just finished testing with 3.12, and I'm still seeing the same issue.
This is actually a bit strange to me, because, when I tested with
3.12-rc5 a while back, everything seemed to be ok (see previoues e-mail
in this thread, to Bob Liu). I guess, embarrasingly enough, I must have
been playing with a screwed up config that day, and managed to somehow
avoid the problem... Either way, it appears that we still have a
problem here.

I'll poke around a bit more on this in the next few days and see if I
can come up with any more information. In the meantime, let me know if
you have any other suggestions.


- Alex

> Thanks.
> --
> Mel Gorman
> SUSE Labs
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