linux-kernel - Re: [PATCH v2] drm/amdgpu: fix a possible null pointer dereference

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Message-ID: <74b43faa-f212-4542-b7e2-68d5eb9ce474@web.de>
Date: Thu, 11 Jul 2024 08:48:36 +0200
From: Markus Elfring <Markus.Elfring@....de>
To: make24@...as.ac.cn, amd-gfx@...ts.freedesktop.org,
 dri-devel@...ts.freedesktop.org, kernel-janitors@...r.kernel.org
Cc: tech-board@...ups.linuxfoundation.org, LKML
 <linux-kernel@...r.kernel.org>, Alex Deucher <alexander.deucher@....com>,
 Chen Jiahao <chenjiahao16@...wei.com>,
 Christian König <christian.koenig@....com>,
 Daniel Vetter <daniel@...ll.ch>, David Airlie <airlied@...il.com>,
 Guchun Chen <guchun.chen@....com>, Jammy Zhou <Jammy.Zhou@....com>,
 Srinivasan Shanmugam <srinivasan.shanmugam@....com>,
 Shuah Khan <shuah@...nel.org>, Wei Liu <wei.liu@...nel.org>,
 Xinhui Pan <Xinhui.Pan@....com>
Subject: Re: [PATCH v2] drm/amdgpu: fix a possible null pointer dereference

> In amdgpu_connector_add_common_modes(), the return value of drm_cvt_mode()
> is assigned to mode, which will lead to a NULL pointer dereference on
> failure of drm_cvt_mode(). Add a check to avoid npd.
>
> Fixes: d38ceaf99ed0 ("drm/amdgpu: add core driver (v4)")
> Signed-off-by: Ma Ke <make24@...as.ac.cn>

Are you going to adhere to known research and development processes?
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/researcher-guidelines.rst?h=v6.10-rc7#n5

Regards,
Markus