Re: Patch "arm64: kasan: Revert "arm64: mte: reset the page tag in page->flags"" has been added to the 5.19-stable tree

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On Mon, Sep 12, 2022 at 10:52:45AM +0100, Catalin Marinas wrote:
I missed this (holidays) and it looks like it's in stable already. On
its own it will likely break kasan_hw if used together with user-space
MTE as this change relies on two previous commits:

70c248aca9e7 ("mm: kasan: Skip unpoisoning of user pages")
6d05141a3930 ("mm: kasan: Skip page unpoisoning only if __GFP_SKIP_KASAN_UNPOISON")

The reason I did not cc stable is that there are other dependencies in
this area. The potential issues without the above commits were rather
theoretical, so take these patches rather as clean-ups/refactoring than
fixes.

And I've missed Will's mail too - sorry about that. I've reverted it
from the 5.19 & 5.15 trees which is the only ones where this change was
ended up being backported to.

--
Thanks,
Sasha



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