[PATCH] arm64: Also reset KASAN tag if page is not PG_mte_tagged

[Will Deacon]

On Thu, 20 Apr 2023 14:09:45 -0700, Peter Collingbourne wrote:
> Consider the following sequence of events:
> 
> 1) A page in a PROT_READ|PROT_WRITE VMA is faulted.
> 2) Page migration allocates a page with the KASAN allocator,
>    causing it to receive a non-match-all tag, and uses it
>    to replace the page faulted in 1.
> 3) The program uses mprotect() to enable PROT_MTE on the page faulted in 1.
> 
> [...]

Applied to arm64 (for-next/fixes), thanks!

[1/1] arm64: Also reset KASAN tag if page is not PG_mte_tagged
      https://git.kernel.org/arm64/c/2efbafb91e12

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
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