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SubjectRe: mm, vmscan: commit makes PAE kernel crash nightly (bisected)
On 2017-01-11 Mel Gorman wrote:
> On Wed, Jan 11, 2017 at 12:11:46PM +0000, Mel Gorman wrote:
> > On Wed, Jan 11, 2017 at 04:32:43AM -0600, Trevor Cordes wrote:
> > > Hi! I have biected a nightly oom-killer flood and crash/hang on
> > > one of the boxes I admin. It doesn't crash on Fedora 23/24
> > > 4.7.10 kernel but does on any 4.8 Fedora kernel. I did a vanilla
> > > bisect and the bug is here:
> > >
> > > commit b2e18757f2c9d1cdd746a882e9878852fdec9501
> > > Author: Mel Gorman <mgorman@techsingularity.net>
> > > Date: Thu Jul 28 15:45:37 2016 -0700
> > >
> > > mm, vmscan: begin reclaiming pages on a per-node basis
> > >
> >
> > Michal Hocko recently worked on a bug similar to this. Can you test
> > the following patch that is currently queued in Andrew Morton's
> > tree? It applies cleanly to 4.9
> >
>
> I should have pointed out that this patch primarily affects memcg but
> the bug report did not include an OOM report and did not describe
> whether memcgs could be involved or not. If memcgs are not involved
> then please post the first full OOM kill.

I will apply your patch tonight and it will take 48 hours to confirm
that it is "good" (<24 hours if it's bad), and I will reply back.

I'm not sure how I can tell if my bug is because of memcgs so here is
a full first oom example (attached).

Thanks for the help!
[unhandled content-type:application/octet-stream]
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