[LTP] [PATCH] Taunt OOM killer in fork12 setup()

[Li Wang]

On Fri, Jan 31, 2020 at 12:13 AM Martin Doucha <mdoucha@suse.cz> wrote:

> On a system with low memory, fork12 can trigger OOM killer before it hits
> any fork() limits. The OOM killer might accidentally kill e.g. the parent
> shell and external testing tools will assume the test failed.
>
> Set high oom_score_adj on the fork12 process so that the OOM killer focuses
> on it and its children.
>

It sounds more like the OOM-Killer defect but not fork12. What we do for
that is to protect the parent shell and its harness to avoid
oom_kill_process() acting on them.

On the other side, if we do raise the oom score of fork12, that would not
guarantee OOM-Killer do right evaluation but just makes fork12 easily to be
killed in testing.

-- 
Regards,
Li Wang
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