linux-kernel - Re: [PATCH 23/31] kasan, arm64: allow KASAN_VMALLOC with SW

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Message-ID: <CA+fCnZf08U_nZzR2snKs_SBXjB8WhSDARNpP3d+wMwgFvDgoHg@mail.gmail.com>
Date:   Mon, 6 Dec 2021 22:10:10 +0100
From:   Andrey Konovalov <andreyknvl@...il.com>
To:     Marco Elver <elver@...gle.com>
Cc:     andrey.konovalov@...ux.dev,
        Alexander Potapenko <glider@...gle.com>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Peter Collingbourne <pcc@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        kasan-dev <kasan-dev@...glegroups.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Will Deacon <will@...nel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Evgenii Stepanov <eugenis@...gle.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Andrey Konovalov <andreyknvl@...gle.com>
Subject: Re: [PATCH 23/31] kasan, arm64: allow KASAN_VMALLOC with SW_TAGS

On Fri, Dec 3, 2021 at 1:38 PM Marco Elver <elver@...gle.com> wrote:
>
> On Tue, Nov 30, 2021 at 11:07PM +0100, andrey.konovalov@...ux.dev wrote:
> > From: Andrey Konovalov <andreyknvl@...gle.com>
> >
> > vmalloc support for SW_TAGS KASAN is now complete.
> >
> > Allow enabling CONFIG_KASAN_VMALLOC.
> >
> > Signed-off-by: Andrey Konovalov <andreyknvl@...gle.com>
>
> This change is small enough that I would have expected the
> lib/Kconfig.kasan change to appear in "kasan, vmalloc: add vmalloc
> support to SW_TAGS" because that sounds like it would fully unlock
> core KASAN support.
>
> However, the arm64 change could be in its own patch, since there may be
> conflicts with arm64 tree or during backports, and only dropping that
> may be ok.
>
> I've been backporting too many patches lately, that I feel that would
> help.

Sounds good, will do in v2. Thanks!