Commit 7ce235e5 authored by Sung Joon Kim's avatar Sung Joon Kim Committed by Peng Zhang
Browse files

drm/amd/display: Check for NULL pointer 

mainline inclusion
from mainline-v6.11-rc1
commit 4ab68e168ae1695f7c04fae98930740aaf7c50fa
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAKQ09
CVE: CVE-2024-42308

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4ab68e168ae1695f7c04fae98930740aaf7c50fa



--------------------------------

[why & how]
Need to make sure plane_state is initialized
before accessing its members.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: default avatarXi (Alex) Liu <xi.liu@amd.com>
Signed-off-by: default avatarSung Joon Kim <sungjoon.kim@amd.com>
Signed-off-by: default avatarAurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 295d91cbc700651782a60572f83c24861607b648)
Signed-off-by: default avatarZhangPeng <zhangpeng362@huawei.com>
parent 48bea924

drivers/gpu/drm/amd/display/dc/core/dc_surface.c

+2 −1
Original line number Diff line number Diff line
@@ -154,6 +154,7 @@ const struct dc_plane_status *dc_plane_get_status( 
		if (pipe_ctx->plane_state != plane_state)

			continue;



		if (pipe_ctx->plane_state)

			pipe_ctx->plane_state->status.is_flip_pending = false;



		break;