linux-kernel - Re: [PATCH] arm64: kasan: fix page_alloc tagging with DEBUG

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Message-Id: <161529596129.3814589.13038514678630962150.b4-ty@kernel.org>
Date:   Tue,  9 Mar 2021 15:38:29 +0000
From:   Will Deacon <will@...nel.org>
To:     Catalin Marinas <catalin.marinas@....com>,
        Andrey Konovalov <andreyknvl@...gle.com>,
        Will Deacon <will.deacon@....com>
Cc:     kernel-team@...roid.com, Will Deacon <will@...nel.org>,
        Branislav Rankov <Branislav.Rankov@....com>,
        Evgenii Stepanov <eugenis@...gle.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        linux-kernel@...r.kernel.org, Marco Elver <elver@...gle.com>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Alexander Potapenko <glider@...gle.com>,
        Kevin Brodsky <kevin.brodsky@....com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        linux-arm-kernel@...ts.infradead.org, stable@...r.kernel.org,
        linux-mm@...ck.org, kasan-dev@...glegroups.com,
        Andrew Morton <akpm@...ux-foundation.org>,
        Peter Collingbourne <pcc@...gle.com>
Subject: Re: [PATCH] arm64: kasan: fix page_alloc tagging with DEBUG_VIRTUAL

On Mon, 8 Mar 2021 17:10:23 +0100, Andrey Konovalov wrote:
> When CONFIG_DEBUG_VIRTUAL is enabled, the default page_to_virt() macro
> implementation from include/linux/mm.h is used. That definition doesn't
> account for KASAN tags, which leads to no tags on page_alloc allocations.
> 
> Provide an arm64-specific definition for page_to_virt() when
> CONFIG_DEBUG_VIRTUAL is enabled that takes care of KASAN tags.

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

[1/1] arm64: kasan: fix page_alloc tagging with DEBUG_VIRTUAL
      https://git.kernel.org/arm64/c/86c83365ab76

Cheers,
-- 
Will

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