[PATCH 1/2] media: mediatek: vcodec: Fix encoder access NULL pointer

[Hans Verkuil]

On 04/10/2023 08:54, Hans Verkuil wrote:
> Ping! Is this a fix for 6.6 or not?
> 
> Regards,
> 
> 	Hans
> 
> On 02/10/2023 12:24, Hans Verkuil wrote:
>> On 26/09/2023 12:19, Irui Wang wrote:
>>> Need to set the private data with encoder device, or will access
>>> NULL pointer in encoder handler.
>>>
>>> Fixes: 1972e32431ed ("media: mediatek: vcodec: Fix possible invalid memory access for encoder")
>>>
>>> Signed-off-by: Irui Wang <irui.wang at mediatek.com>
>>> ---
>>>  drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c | 3 ++-
>>>  1 file changed, 2 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c b/drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c
>>> index d299cc2962a5..ae6290d28f8e 100644
>>> --- a/drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c
>>> +++ b/drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c
>>> @@ -138,7 +138,8 @@ int vpu_enc_init(struct venc_vpu_inst *vpu)
>>>  	vpu->ctx->vpu_inst = vpu;
>>>  
>>>  	status = mtk_vcodec_fw_ipi_register(vpu->ctx->dev->fw_handler, vpu->id,
>>> -					    vpu_enc_ipi_handler, "venc", NULL);
>>> +					    vpu_enc_ipi_handler, "venc",
>>> +					    vpu->ctx->dev);
>>>  
>>>  	if (status) {
>>>  		mtk_venc_err(vpu->ctx, "vpu_ipi_register fail %d", status);
>>
>> Is this a fix that should go to 6.6?

This looks like a real bug, so I'll queue this up for 6.6.

Regards,

	Hans