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

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Message-ID: <CANpmjNN-0C8Q4q_Hx988RPSVeb0_54C=cRxfch3H+V3Pb5wWsw@mail.gmail.com>
Date:   Thu, 12 Aug 2021 17:44:03 +0200
From:   Marco Elver <elver@...gle.com>
To:     Andrey Konovalov <andreyknvl@...il.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, 12 Aug 2021 at 17:06, Andrey Konovalov <andreyknvl@...il.com> wrote:
> 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.

Reviewed-by: Marco Elver <elver@...gle.com>

Looks good, thank you!