NvV4l2ElementPlane never calls v4l2_close() on buffers exported with VIDIOC_EXPBUF.
It’s quite unusual. I mean if I call open() I’m supposed to call close() later.
“It is recommended to close a DMABUF file when it is no longer used to allow the associated memory to be reclaimed.”
I thought it’s a leak initially but if I close exported buffers I get one error message per buffer eventually:
NVMAP_IOC_FREE failed: Bad file descriptor
Could somebody confirm that exported MM buffers must not be closed?
I’m doublechecking, because, again, it’s quite unusual.