Le mercredi 02 novembre 2022 à 15:10 +0300, Anastasia Belova a écrit :
> Any time calling vp9_is_sf_ref_fb we need fb != NULL after checks.
>
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
>
> Fixes: f77e89854b3e ("[media] vcodec: mediatek: Add Mediatek VP9 Video Decoder Driver")
As Angelo said, this change is a no-op in practice, for this reason I would
suggest to drop the `Fixes` tag (not worth the effort of back-porting this).
>
> Signed-off-by: Anastasia Belova <abelova@xxxxxxxxxxxxx>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@xxxxxxxxxxxxx>
> ---
> drivers/media/platform/mediatek/vcodec/vdec/vdec_vp9_if.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/media/platform/mediatek/vcodec/vdec/vdec_vp9_if.c b/drivers/media/platform/mediatek/vcodec/vdec/vdec_vp9_if.c
> index 70b8383f7c8e..776468cd834a 100644
> --- a/drivers/media/platform/mediatek/vcodec/vdec/vdec_vp9_if.c
> +++ b/drivers/media/platform/mediatek/vcodec/vdec/vdec_vp9_if.c
> @@ -208,6 +208,9 @@ static bool vp9_is_sf_ref_fb(struct vdec_vp9_inst *inst, struct vdec_fb *fb)
> int i;
> struct vdec_vp9_vsi *vsi = inst->vsi;
>
> + if (!fb)
> + return true;
> +
> for (i = 0; i < ARRAY_SIZE(vsi->sf_ref_fb); i++) {
> if (fb == &vsi->sf_ref_fb[i].fb)
> return true;
