Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org B0F9B60159
From:   <sgrover@codeaurora.org>
To:     "'Marco Elver'" <elver@google.com>,
        "'Dmitry Vyukov'" <dvyukov@google.com>
Cc:     "'kasan-dev'" <kasan-dev@googlegroups.com>,
        "'LKML'" <linux-kernel@vger.kernel.org>,
        "'Paul E. McKenney'" <paulmck@linux.ibm.com>,
        "'Will Deacon'" <willdeacon@google.com>,
        "'Andrea Parri'" <parri.andrea@gmail.com>,
        "'Alan Stern'" <stern@rowland.harvard.edu>,
        "'Mark Rutland'" <mark.rutland@arm.com>
References: <000001d5824d$c8b2a060$5a17e120$@codeaurora.org> <CACT4Y+aAicvQ1FYyOVbhJy62F4U6R_PXr+myNghFh8PZixfYLQ@mail.gmail.com> <CANpmjNOx7fuLLBasdEgnOCJepeufY4zo_FijsoSg0hfVgN7Ong@mail.gmail.com>
In-Reply-To: <CANpmjNOx7fuLLBasdEgnOCJepeufY4zo_FijsoSg0hfVgN7Ong@mail.gmail.com>
Subject: RE: KCSAN Support on ARM64 Kernel
Date:   Mon, 14 Oct 2019 14:59:58 +0530
Message-ID: <002801d58271$f5d01db0$e1705910$@codeaurora.org>
MIME-Version: 1.0
Content-Type: text/plain;
        charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Thread-Index: AQIkPOdSLH2Qcxx8ygFmLWl3/QxVtgJ871EyAngelYemlMA6UA==
Content-Language: en-us
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Hi Marco,

When can we expect upstream of KCSAN on kernel mainline. Any timeline?

Regards,
Sachin Grover

-----Original Message-----
From: Marco Elver <elver@google.com>=20
Sent: Monday, 14 October, 2019 2:40 PM
To: Dmitry Vyukov <dvyukov@google.com>
Cc: sgrover@codeaurora.org; kasan-dev <kasan-dev@googlegroups.com>; LKML =
<linux-kernel@vger.kernel.org>; Paul E. McKenney =
<paulmck@linux.ibm.com>; Will Deacon <willdeacon@google.com>; Andrea =
Parri <parri.andrea@gmail.com>; Alan Stern <stern@rowland.harvard.edu>; =
Mark Rutland <mark.rutland@arm.com>
Subject: Re: KCSAN Support on ARM64 Kernel

On Mon, 14 Oct 2019 at 10:40, Dmitry Vyukov <dvyukov@google.com> wrote:
>
> On Mon, Oct 14, 2019 at 7:11 AM <sgrover@codeaurora.org> wrote:
> >
> > Hi Dmitry,
> >
> > I am from Qualcomm Linux Security Team, just going through KCSAN and =
found that there was a thread for arm64 support =
(https://lkml.org/lkml/2019/9/20/804).
> >
> > Can you please tell me if KCSAN is supported on ARM64 now? Can I =
just rebase the KCSAN branch on top of our let=E2=80=99s say android =
mainline kernel, enable the config and run syzkaller on that for finding =
race conditions?
> >
> > It would be very helpful if you reply, we want to setup this for =
finding issues on our proprietary modules that are not part of kernel =
mainline.
> >
> > Regards,
> >
> > Sachin Grover
>
> +more people re KCSAN on ARM64

KCSAN does not yet have ARM64 support. Once it's upstream, I would =
expect that Mark's patches (from repo linked in LKML thread) will just =
cleanly apply to enable ARM64 support.

Thanks,
-- Marco