Hello Alex,
where did you commited, this?
Can't find it your trees.
By the way:
Tested-by: Dieter Nützel <[email protected]>
https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41557#note_3602165
Greetings,
Dieter
PS Please CC me. I'm currently not on 'amd-devel'.
Applied. Thanks!
On Mon, Aug 3, 2026 at 8:58 AM Timur Kristóf <timur.kristof at
gmail.com> wrote:
>
> The pipe_ctx->plane_res.hubp pointer is NULL on all DCE
> hardware, which causes a kernel NULL pointer dereference
> on all Vega and older GPUs.
>
> Let's add a simple NULL check.
>
> Fixes: f879f53407f0 ("drm/amd/display: Refactor DPP_SET_OUTPUT_TRANSFER_FUNC to
drop pipe_ctx")
> Signed-off-by: Timur Kristóf <timur.kristof at gmail.com>
> Cc: Tomasz Siemek <tomasz.siemek at amd.com>
> ---
> drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c
b/drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c
> index 11411fa94665..5495e493b2eb 100644
> --- a/drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c
> +++ b/drivers/gpu/drm/amd/display/dc/core/dc_hw_sequencer.c
> @@ -1900,7 +1900,8 @@ void hwss_set_output_transfer_func(struct dc *dc,
struct pipe_ctx *pipe_ctx)
> .xfm = pipe_ctx->plane_res.xfm,
> .dpp = pipe_ctx->plane_res.dpp,
> .mpc = dc->res_pool->mpc,
> - .mpcc_id = pipe_ctx->plane_res.hubp->inst,
> + .mpcc_id = pipe_ctx->plane_res.hubp ?
> +
pipe_ctx->plane_res.hubp->inst : 0,
> .is_top_pipe =
resource_is_pipe_type(pipe_ctx, OPP_HEAD),
> .stream = pipe_ctx->stream,
> }
> --
> 2.55.0
>
