linux-kernel - Re: [PATCH 0/5] arm64: ARMv8.7-A: MTE: Add asymm mode support

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Date:   Tue, 21 Sep 2021 09:03:01 +0200
From:   Vincenzo Frascino <vincenzo.frascino@....com>
To:     Peter Collingbourne <pcc@...gle.com>
Cc:     Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        kasan-dev <kasan-dev@...glegroups.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Alexander Potapenko <glider@...gle.com>,
        Marco Elver <elver@...gle.com>,
        Evgenii Stepanov <eugenis@...gle.com>,
        Branislav Rankov <Branislav.Rankov@....com>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Subject: Re: [PATCH 0/5] arm64: ARMv8.7-A: MTE: Add asymm mode support



On 9/20/21 11:29 PM, Peter Collingbourne wrote:
> On Mon, Sep 13, 2021 at 1:21 AM Vincenzo Frascino
> <vincenzo.frascino@....com> wrote:
>>
>> This series implements the asymmetric mode support for ARMv8.7-A Memory
>> Tagging Extension (MTE), which is a debugging feature that allows to
>> detect with the help of the architecture the C and C++ programmatic
>> memory errors like buffer overflow, use-after-free, use-after-return, etc.
> 
> Unless I'm missing something, it looks like this only includes KASAN
> support and not userspace support. Is userspace support coming in a
> separate patch?
> 
> The fact that this only includes KASAN support should probably be in
> the commit messages as well.
> 

Good catch, I forgot to mention that this series is meant only for in-kernel
support. I will update the cover in the next iteration.

Thanks!

> Peter
> 

-- 
Regards,
Vincenzo