linux-kernel - Re: [PATCH] arm64: mm: reset address tag set by kasan sw tagging

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Message-Id: <159223432421.132562.15172582070330227879.b4-ty@kernel.org>
Date:   Mon, 15 Jun 2020 17:34:02 +0100
From:   Will Deacon <will@...nel.org>
To:     mark.rutland@....com, anshuman.khandual@....com, sashal@...nel.org,
        catalin.marinas@....com, ard.biesheuvel@....com,
        Shyam Thombre <sthombre@...eaurora.org>, will.deacon@....com
Cc:     Will Deacon <will@...nel.org>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] arm64: mm: reset address tag set by kasan sw tagging

On Wed, 10 Jun 2020 16:39:44 +0530, Shyam Thombre wrote:
> KASAN sw tagging sets a random tag of 8 bits in the top byte of the pointer
> returned by the memory allocating functions. So for the functions unaware
> of this change, the top 8 bits of the address must be reset which is done
> by the function arch_kasan_reset_tag().

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

[1/1] arm64: mm: reset address tag set by kasan sw tagging
      https://git.kernel.org/arm64/c/8dd4daa04278

Cheers,
-- 
Will

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