On 29/04/2020 13:42, Tomi Valkeinen wrote:
> If videomode_from_timings() returns true, the mode allocated with
> drm_mode_create will be leaked.
>
> Also, the return value of drm_mode_create() is never checked, and thus
> could cause NULL deref.
>
> Fix these two issues.
>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
Reviewed-by: Jyri Sarha <jsarha@xxxxxx>
> ---
> drivers/gpu/drm/tilcdc/tilcdc_panel.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/tilcdc/tilcdc_panel.c b/drivers/gpu/drm/tilcdc/tilcdc_panel.c
> index 5584e656b857..f66e2f2a1a35 100644
> --- a/drivers/gpu/drm/tilcdc/tilcdc_panel.c
> +++ b/drivers/gpu/drm/tilcdc/tilcdc_panel.c
> @@ -143,12 +143,16 @@ static int panel_connector_get_modes(struct drm_connector *connector)
> int i;
>
> for (i = 0; i < timings->num_timings; i++) {
> - struct drm_display_mode *mode = drm_mode_create(dev);
> + struct drm_display_mode *mode;
> struct videomode vm;
>
> if (videomode_from_timings(timings, &vm, i))
> break;
>
> + mode = drm_mode_create(dev);
> + if (!mode)
> + break;
> +
> drm_display_mode_from_videomode(&vm, mode);
>
> mode->type = DRM_MODE_TYPE_DRIVER;
>
--
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