| Message ID | 20250224063218.2953217-1-make24@iscas.ac.cn (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | drm/amd/display: Fix null check for pipe_ctx->plane_state in resource_build_scaling_params | expand |
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..88e8ae63a07f 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -1452,6 +1452,9 @@ bool resource_build_scaling_params(struct pipe_ctx *pipe_ctx) struct scaling_taps temp = {0}; bool res = false; + if (!plane_state) + return false; + DC_LOGGER_INIT(pipe_ctx->stream->ctx->logger); /* Invalid input */
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. Cc: stable@vger.kernel.org Fixes: 3be5262e353b ("drm/amd/display: Rename more dc_surface stuff to plane_state") Signed-off-by: Ma Ke <make24@iscas.ac.cn> --- drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 3 +++ 1 file changed, 3 insertions(+)