linux-kernel - Re: [PATCH v2] drm: bridge: it66121: Fix invalid connector dereference

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Message-ID: <20230901141029.4vk2hfm2ckxgh4yp@ecard>
Date:   Fri, 1 Sep 2023 09:10:29 -0500
From:   Nishanth Menon <nm@...com>
To:     Aradhya Bhatia <a-bhatia1@...com>
CC:     Jai Luthra <j-luthra@...com>, Phong LE <ple@...libre.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Andrzej Hajda <andrzej.hajda@...el.com>,
        Robert Foss <rfoss@...nel.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Nicolas Belin <nbelin@...libre.com>,
        "Andy.Hsieh" <Andy.Hsieh@...iatek.com>,
        Helen Koike <helen.koike@...labora.com>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <devarsht@...com>
Subject: Re: [PATCH v2] drm: bridge: it66121: Fix invalid connector
 dereference

On 17:01-20230901, Aradhya Bhatia wrote:
> On 01-Sep-23 15:01, Jai Luthra wrote:
> > Fix the NULL pointer dereference when no monitor is connected, and the
> > sound card is opened from userspace.
> > 
> > Instead return an empty buffer (of zeroes) as the EDID information to
> > the sound framework if there is no connector attached.
> > 
> > Fixes: e0fd83dbe924 ("drm: bridge: it66121: Add audio support")
> > Reported-by: Nishanth Menon <nm@...com>
> > Closes: https://lore.kernel.org/all/20230825105849.crhon42qndxqif4i@gondola/
> > Reviewed-by: Helen Koike <helen.koike@...labora.com>
> > Signed-off-by: Jai Luthra <j-luthra@...com>
> 
> Reviewed-by: Aradhya Bhatia <a-bhatia1@...com>
> 

Tested-by: Nishanth Menon <nm@...com>

Log (beagleplay): https://gist.github.com/nmenon/17fea9316cbcc5ee47597a39fa5e2d6f

Tested on 99d99825fc07 (origin/master, origin/HEAD) Merge tag 'nfs-for-6.6-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

Could we get this merged for rc1 cycle?

-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D