diff options
| author |   Ma Ke <make24@iscas.ac.cn> | 2025-02-26 16:37:31 +0800 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2025-03-05 11:44:53 -0500 |
| commit | 374c9faac5a763a05bc3f68ad9f73dab3c6aec90 (patch) | |
| tree | 83b4957a2a1bb5cb14e33654d42b7055aa407479 | |
| parent | Linux 6.14-rc5 (diff) | |
| download | wireguard-linux-374c9faac5a763a05bc3f68ad9f73dab3c6aec90.tar.xz wireguard-linux-374c9faac5a763a05bc3f68ad9f73dab3c6aec90.zip | |
drm/amd/display: Fix null check for pipe_ctx->plane_state in resource_build_scaling_params
Null pointer dereference issue could occur when pipe_ctx->plane_state
is null. The fix adds a check to ensure 'pipe_ctx->plane_state' is not
null before accessing. This prevents a null pointer dereference.
Found by code review.
Fixes: 3be5262e353b ("drm/amd/display: Rename more dc_surface stuff to plane_state")
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 63e6a77ccf239337baa9b1e7787cde9fa0462092)
Cc: stable@vger.kernel.org
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c index 520a34a42827..a45037cb4cc0 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -1455,7 +1455,8 @@ bool resource_build_scaling_params(struct pipe_ctx *pipe_ctx) DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger); /* Invalid input */ - if (!plane_state->dst_rect.width || + if (!plane_state || + !plane_state->dst_rect.width || !plane_state->dst_rect.height || !plane_state->src_rect.width || !plane_state->src_rect.height) { |