gstreamer 1.20: v4l2bufferpool spams "newly allocated buffer is not free"

[Michiel Konstapel]

On 27-06-2022 22:24, Nicolas Dufresne via gstreamer-devel wrote:
> Le dimanche 26 juin 2022 à 14:30 +0200, Michiel Konstapel a écrit :
>> On 25-06-2022 17:34, Nicolas Dufresne via gstreamer-devel wrote:
>>>> It's a very common Logitech C920 webcam (but I've seen the same message
>>>> with a Z-Cam M3 camera). I think that uses a generic UVC driver? Anything
>>>> I can run to get you more info?
>>>>
>>> I'm asking as I cannot reproduce, and from the look of it, the trace implies
>>> is will leak data. Which Kernel? Have you tested with your own GStreamer
>>> build (main branch)?
>> $ uname -a
>>   Linux xubuntux 5.4.0-121-generic #137-Ubuntu SMP Wed Jun 15 13:33:07 UTC 2022
> That might explain the discrepancy, this is an old kernel, its quite likely this
> is a kernel bug and its fixed in newer kernels. Make sure to try more recently
> Ubuntu and check. If it is, you likely can request a backport to Ubuntu,
> assuming this isn't an EOL version you are using.
I think you're on to something! I will upgrade and report the results.
Thanks,
Michiel