On Wed 14-12-16 13:29:56, Ian Jackson wrote:
> osstest service owner writes ("[linux-3.18 bisection] complete test-amd64-amd64-xl-qemut-win7-amd64"):
> > *** Found and reproduced problem changeset ***
> >
> > Bug is in tree: linux git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
> > Bug introduced: a2d8c514753276394d68414f563591f174ef86cb
> > Bug not present: 8f620446135b64ca6f96cf32066a76d64e79a388
> > Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/103315/
> >
> > commit a2d8c514753276394d68414f563591f174ef86cb
> > Author: Lukasz Odzioba <lukasz.odzioba@xxxxxxxxx>
> > Date: Fri Jun 24 14:50:01 2016 -0700
> >
> > mm/swap.c: flush lru pvecs on compound page arrival
>
> This commit breaks the test "test-amd64-amd64-xl-qemut-win7-amd64" in
> the Xen Project CI system.
Ohh, I can see it now. This is not an upstream commit. This is a 3.18.37
backport which was wrong! You need the follow up fix 52c84a95dc6a
("4.1.28 Fix bad backport of 8f182270dfec "mm/swap.c: flush lru pvecs on
compound page arrival""). The primary problem was that __lru_cache_add
has leaked pages which would explain your OOM.
--
Michal Hocko
SUSE Labs
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