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SubjectRe: Crash in MM code in v4.4.y, v4.9.y with TRANSPARENT_HUGEPAGE enabled
> Plus I'd have expected the problem to have been in mainline too, and
> apparently it's just the 4.4 and 4.9 backports.

There's another problem in 4.17, but not 4.18, see

Could be the same or different.


> Your test-case does have mprotect with PROT_NONE. Which together with
> that mask that *might* be PHYSICAL_PMD_PAGE_MASK makes me think it
> might be related.
> Linus

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