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From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Douglas Anderson <dianders@chromium.org>
Cc: DRI Development <dri-devel@lists.freedesktop.org>,
	oliver.sang@intel.com, Daniel Vetter <daniel@ffwll.ch>,
	David Airlie <airlied@linux.ie>,
	Jani Nikula <jani.nikula@intel.com>,
	Linus Walleij <linus.walleij@linaro.org>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Sam Ravnborg <sam@ravnborg.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux-Renesas <linux-renesas-soc@vger.kernel.org>
Subject: Re: [PATCH] drm/edid: Fix crash with zero/invalid EDID
Date: Mon, 4 Oct 2021 19:14:32 +0200	[thread overview]
Message-ID: <CAMuHMdUsoBO2hjd0tAecAjnwCUbp=d8i8vaUFDT6Yn3emw2s9Q@mail.gmail.com> (raw)
In-Reply-To: <20211004092100.1.Ic90a5ebd44c75db963112be167a03cc96f9fb249@changeid>

Hi Douglas,

On Mon, Oct 4, 2021 at 6:22 PM Douglas Anderson <dianders@chromium.org> wrote:
> In the commit bac9c2948224 ("drm/edid: Break out reading block 0 of
> the EDID") I broke out reading the base block of the EDID to its own
> function. Unfortunately, when I did that I messed up the handling when
> drm_edid_is_zero() indicated that we had an EDID that was all 0x00 or
> when we went through 4 loops and didn't get a valid EDID. Specifically
> I needed to pass the broken EDID to connector_bad_edid() but now I was
> passing an error-pointer.
>
> Let's re-jigger things so we can pass the bad EDID in properly.
>
> Fixes: bac9c2948224 ("drm/edid: Break out reading block 0 of the EDID")
> Reported-by: kernel test robot <oliver.sang@intel.com>
> Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
> Signed-off-by: Douglas Anderson <dianders@chromium.org>

The crash is was seeing is gone, so
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

  reply	other threads:[~2021-10-04 17:14 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-04 16:21 Douglas Anderson
2021-10-04 17:14 ` Geert Uytterhoeven [this message]
2021-10-05  0:40   ` Doug Anderson
2021-10-05 13:45     ` Doug Anderson
2021-10-04 19:44 ` Ville Syrjälä
2021-10-05 13:33   ` Zuo, Jerry
2021-10-05 15:13     ` connector_bad_edid() is broken (was: Re: [PATCH] drm/edid: Fix crash with zero/invalid EDID) Doug Anderson
2021-10-05 15:25       ` Zuo, Jerry
2021-10-05 18:03         ` Harry Wentland
2021-10-06 12:05           ` Zuo, Jerry
2021-10-05 16:43 ` [PATCH] drm/edid: Fix crash with zero/invalid EDID Ville Syrjälä
2021-10-06  2:20   ` Doug Anderson

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