linux-kernel - Re: drm: WARNING in ioremap

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Date:   Fri, 2 Sep 2016 14:23:47 +0200
From:   Dmitry Vyukov <dvyukov@...gle.com>
To:     Dmitry Vyukov <dvyukov@...gle.com>, airlied@...ux.ie,
        dri-devel@...ts.freedesktop.org,
        LKML <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Kostya Serebryany <kcc@...gle.com>,
        syzkaller <syzkaller@...glegroups.com>,
        Alexander Potapenko <glider@...gle.com>
Subject: Re: drm: WARNING in ioremap_wc

On Mon, Aug 29, 2016 at 8:05 AM, Daniel Vetter <daniel@...ll.ch> wrote:
> On Sun, Aug 28, 2016 at 07:36:59PM +0200, Dmitry Vyukov wrote:
>> Hello,
>>
>> The following program triggers WARNING in ioremap_wc:
>
> Yup, that should also be fixed in linux-next. Probably better to not
> report more for 4.8-rc kernels for now ;-)
>
> If you have some time to test, you need to cherry pick the following two
> patches I think:
>
> fa5386459f06 ("drm: Used DRM_LEGACY for all legacy functions")
> 3cbf6a5deb2f ("drm: Mark up legacy/dri1 drivers with DRM_LEGACY")
>
> If that's confirmed we can cherry-pick them over to -fixes.


Hi Daniel,

I've switched to linux-next and don't see the WARNINGs anymore.
I wonder how they were discovered? Is somebody else running syzkaller?
Or they were discovered in some other way?

Thanks