Re: [Bug] Reproducible data corruption on i5-3340M: Please revert 53a59fc67!

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On Thu 15-08-13 05:02:31, Linus Torvalds wrote:
> On Thu, Aug 15, 2013 at 2:25 AM, Ben Tebulin <tebulin@xxxxxxxxxxxxxx> wrote:
> >
> > I just cherry-picked e6c495a96ce0 into 3.9.11 and 3.7.10.
> > Unfortunately this does _not resolve_ my issue (too good to be true) :-(
> 
> Ho humm. I've found at least one other bug, but that one only affects
> hugepages. Do you perhaps have transparent hugepages enabled? But even
> then it looks quite unlikely.

__unmap_hugepage_range is hugetlb not THP if you had that one in mind.
And yes, it doesn't set the range which sounds buggy.

> I'll think about this some more. I'm not happy with how that
> particular whole TLB flushing hack was done, but I need to sleep on
> this.

I am looking into it as well, but there are high prio things which
preempt me a lot :/

Thanks for looking into it.
-- 
Michal Hocko
SUSE Labs

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