From: Sung Joon Kim <sungjoon.kim@amd.com> 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/?i... -------------------------------- [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: Xi (Alex) Liu <xi.liu@amd.com> Signed-off-by: Sung Joon Kim <sungjoon.kim@amd.com> Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit 295d91cbc700651782a60572f83c24861607b648) Signed-off-by: ZhangPeng <zhangpeng362@huawei.com> --- drivers/gpu/drm/amd/display/dc/core/dc_surface.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_surface.c b/drivers/gpu/drm/amd/display/dc/core/dc_surface.c index 3d7d27435f15..98391ba103d6 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_surface.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_surface.c @@ -154,7 +154,8 @@ const struct dc_plane_status *dc_plane_get_status( if (pipe_ctx->plane_state != plane_state) continue; - pipe_ctx->plane_state->status.is_flip_pending = false; + if (pipe_ctx->plane_state) + pipe_ctx->plane_state->status.is_flip_pending = false; break; } -- 2.25.1