linux-kernel - Re: [PATCH v2 0/8] kasan: test: avoid crashing the kernel with HW

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Message-ID: <CA+fCnZfjsfiAsfnOxJhMaP0i7LaDgsVSkrw_Ut66_E_wQ3hE_g@mail.gmail.com>
Date:   Thu, 12 Aug 2021 17:05:53 +0200
From:   Andrey Konovalov <andreyknvl@...il.com>
To:     Marco Elver <elver@...gle.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Alexander Potapenko <glider@...gle.com>,
        kasan-dev <kasan-dev@...glegroups.com>,
        Linux Memory Management List <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>, andrey.konovalov@...ux.dev
Subject: Re: [PATCH v2 0/8] kasan: test: avoid crashing the kernel with HW_TAGS

On Thu, Aug 12, 2021 at 4:53 PM <andrey.konovalov@...ux.dev> wrote:
>
> From: Andrey Konovalov <andreyknvl@...il.com>
>
> KASAN tests do out-of-bounds and use-after-free accesses. Running the
> tests works fine for the GENERIC mode, as it uses qurantine and redzones.
> But the HW_TAGS mode uses neither, and running the tests might crash
> the kernel.
>
> Rework the tests to avoid corrupting kernel memory.
>
> Changes v1->v2:
> - Touch both good and bad memory in memset tests as suggested by Marco.

Ah, I forgot to include your reviews/acks, Marco.

Perhaps you can give one for the whole series now.

Thanks!