On Tue, Jan 30, 2024 at 7:00 AM Manos Pitsidianakis <
manos.pitsidiana...@linaro.org> wrote:
> When the Rutabaga GPU device frees resources, it calls
> rutabaga_resource_unref for that resource_id. However, when the generic
> VirtIOGPU functions destroys resources, it only removes the
> virtio_gpu_simple_resource from the device's VirtIOGPU->reslist list.
> The rutabaga resource associated with that resource_id is then leaked.
>
> This commit overrides the resource_destroy class method introduced in
> the previous commit to fix this.
>
Reviewed-by: Gurchetan Singh
>
> Signed-off-by: Manos Pitsidianakis
> ---
> hw/display/virtio-gpu-rutabaga.c | 47
> 1 file changed, 35 insertions(+), 12 deletions(-)
>
> diff --git a/hw/display/virtio-gpu-rutabaga.c
> b/hw/display/virtio-gpu-rutabaga.c
> index 9e67f9bd51..17bf701a21 100644
> --- a/hw/display/virtio-gpu-rutabaga.c
> +++ b/hw/display/virtio-gpu-rutabaga.c
> @@ -148,14 +148,38 @@ rutabaga_cmd_create_resource_3d(VirtIOGPU *g,
> }
>
> static void
> +virtio_gpu_rutabaga_resource_unref(VirtIOGPU *g,
> + struct virtio_gpu_simple_resource *res,
> + Error **errp)
> +{
> +int32_t result;
> +VirtIOGPURutabaga *vr = VIRTIO_GPU_RUTABAGA(g);
> +
> +result = rutabaga_resource_unref(vr->rutabaga, res->resource_id);
> +if (result) {
> +error_setg_errno(errp,
> +(int)result,
> +"%s: rutabaga_resource_unref returned %"PRIi32
> +" for resource_id = %"PRIu32, __func__, result,
> +res->resource_id);
> +}
> +
> +if (res->image) {
> +pixman_image_unref(res->image);
> +}
> +
> +QTAILQ_REMOVE(>reslist, res, next);
> +g_free(res);
> +}
+
> +static void
> rutabaga_cmd_resource_unref(VirtIOGPU *g,
> struct virtio_gpu_ctrl_command *cmd)
> {
> -int32_t result;
> +int32_t result = 0;
> struct virtio_gpu_simple_resource *res;
> struct virtio_gpu_resource_unref unref;
> -
> -VirtIOGPURutabaga *vr = VIRTIO_GPU_RUTABAGA(g);
> +Error *local_err = NULL;
>
> VIRTIO_GPU_FILL_CMD(unref);
>
> @@ -164,15 +188,14 @@ rutabaga_cmd_resource_unref(VirtIOGPU *g,
> res = virtio_gpu_find_resource(g, unref.resource_id);
> CHECK(res, cmd);
>
> -result = rutabaga_resource_unref(vr->rutabaga, unref.resource_id);
> -CHECK(!result, cmd);
> -
> -if (res->image) {
> -pixman_image_unref(res->image);
> +virtio_gpu_rutabaga_resource_unref(g, res, _err);
> +if (local_err) {
> +error_report_err(local_err);
> +/* local_err was freed, do not reuse it. */
> +local_err = NULL;
> +result = 1;
> }
> -
> -QTAILQ_REMOVE(>reslist, res, next);
> -g_free(res);
> +CHECK(!result, cmd);
> }
>
> static void
> @@ -1099,7 +1122,7 @@ static void
> virtio_gpu_rutabaga_class_init(ObjectClass *klass, void *data)
> vgc->handle_ctrl = virtio_gpu_rutabaga_handle_ctrl;
> vgc->process_cmd = virtio_gpu_rutabaga_process_cmd;
> vgc->update_cursor_data = virtio_gpu_rutabaga_update_cursor;
> -
> +vgc->resource_destroy = virtio_gpu_rutabaga_resource_unref;
> vdc->realize = virtio_gpu_rutabaga_realize;
> device_class_set_props(dc, virtio_gpu_rutabaga_properties);
> }
> --
> γαῖα πυρί μιχθήτω
>
>
