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SubjectRe: GRU driver feedback

Whoops:

>
> - In gru_fault, I don't think you've validated the size of the vma, and it
> definitely seems like you haven't taken offset into the vma into account
> either. remap_pfn_range etc should probably validate the former because I'm
> sure this isn't the only driver that might get it wrong. The latter can't
> really be detected though. Please fix or make it more obviously correct (eg
> a comment).

ZZZ
s/ZZZ/fixed/



--- jack

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