linux-kernel - [PATCH 0/2] drm/amd/display: Fix Null Pointer Dereference Issues

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Message-ID: <20241105140137.2465572-1-quzicheng@huawei.com>
Date: Tue, 5 Nov 2024 14:01:35 +0000
From: Zicheng Qu <quzicheng@...wei.com>
To: <harry.wentland@....com>, <sunpeng.li@....com>,
	<Rodrigo.Siqueira@....com>, <alexander.deucher@....com>,
	<christian.koenig@....com>, <Xinhui.Pan@....com>, <airlied@...il.com>,
	<simona@...ll.ch>, <Dillon.Varone@....com>, <Alvin.Lee2@....com>,
	<nicholas.kazlauskas@....com>, <alex.hung@....com>,
	<aurabindo.pillai@....com>, <relja.vojvodic@....com>,
	<chiahsuan.chung@....com>, <wenjing.liu@....com>, <george.shen@....com>,
	<mwen@...lia.com>, <yi-lchen@....com>, <martin.leung@....com>,
	<srinivasan.shanmugam@....com>, <stylon.wang@....com>, <jun.lei@....com>,
	<amd-gfx@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>,
	<linux-kernel@...r.kernel.org>
CC: <tanghui20@...wei.com>, <zhangqiao22@...wei.com>,
	<judy.chenhui@...wei.com>, <quzicheng@...wei.com>
Subject: [PATCH 0/2] drm/amd/display: Fix Null Pointer Dereference Issues

Hi all,

I am submitting two patches to fix null pointer dereference issues in
the AMD display driver.

1. Patch 1/2 (Fixes: 8e4ed3cf1642): Add null checks in
dcn20_program_pipe() to prevent potential crashes when accessing
plane_state.

2. Patch 2/2 (Fixes: 0baae6246307): Ensures pipe_ctx->plane_state is
checked in hwss_setup_dpp() to improve function stability.

Thanks for reviewing!

Zicheng Qu (2):
  drm/amd/display: Fix null check for pipe_ctx->plane_state in
    dcn20_program_pipe
  drm/amd/display: Fix null check for pipe_ctx->plane_state in
    hwss_setup_dpp

 drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c   | 3 +++
 drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c | 6 +++---
 2 files changed, 6 insertions(+), 3 deletions(-)

-- 
2.34.1