Re: v5.1-rc5 s390x WARNING

Mel Gorman
2019-04-19T08:53:01Z

On Fri, Apr 19, 2019 at 04:41:24PM +0800, Li Wang wrote:
> > Avoiding the scenario is pointless because it's not wrong. The check was
> > initially meant to catch serious programming errors such as using a
> > stale page pointer so I think the right patch is below. Li Wang, how
> > reproducible is this and would you be willing to test it?
> >
>
> It's not easy to reproduce that again. I just saw only once during the OOM
> phase that occurred on my s390x platform.
>
> Sure, I run the stress test against a new kernel(build with this patch
> applied) for many rounds, so far so good.
>

I think the patch is safe enough and have sent it on to Andrew. Thanks
for reporting and testing this, it's appreciated.

--
Mel Gorman
SUSE Labs