linux-kernel - Re: mm, vmscan: commit makes PAE kernel crash nightly (bisected)

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Message-ID: <20170205165359.0c52f86b@pog.tecnopolis.ca>
Date:   Sun, 5 Feb 2017 16:53:59 -0600
From:   Trevor Cordes <trevor@...nopolis.ca>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Mel Gorman <mgorman@...hsingularity.net>,
        linux-kernel@...r.kernel.org, Joonsoo Kim <iamjoonsoo.kim@....com>,
        Minchan Kim <minchan@...nel.org>,
        Rik van Riel <riel@...riel.com>,
        Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Subject: Re: mm, vmscan: commit makes PAE kernel crash nightly (bisected)

On 2017-02-05 Michal Hocko wrote:
> On Fri 03-02-17 18:36:54, Trevor Cordes wrote:
> > I ran to_test/linus-tree/oom_hickups branch (4.10.0-rc6+) for 50
> > hours and it does NOT have the bug!  No problems at all so far.  
> 
> OK, that is definitely good to know. My other fix ("mm, vmscan:
> consider eligible zones in get_scan_count") was more theoretical than
> bug driven. I would add your
> Tested-by: Trevor Cordes <trevor@...nopolis.ca>
> 
> unless you have anything against that.

I am happy to be in the tested-by; go ahead.

> > So I think whatever to_test/linus-tree/oom_hickups has that
> > since-4.9 has that vanilla 4.10-rc6 does *not* have is indeed the
> > fix.
> > 
> > For my reference, and I know you guys aren't distro-specific, what
> > is the best way to get this fix into Fedora 24 (currently 4.9)?  
> 
> I will send this patch to 4.9+ stable as soon as it hits Linus tree.

That's great news!  It will make everyone on the rhbz happy.  Thank you!