Backtrace sometimes printed when closing chromium tab or window

[xtknight]

00: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f8e3fa13b29]
VDPAU nvidia: Version: NVIDIA VDPAU Driver Shared Library 440.44 Sun Dec 8 03:27:26 UTC 2019
VDPAU nvidia: Error detected 0 7402
VDPAU nvidia: Backtrace:
--: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f8e3fa09000] DSO load base
00: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f8e3fa104ff]
01: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f8e3fa1ea7a]
02: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f8e3fa0fb62]
03: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f8e3fa11581]
04: /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_nvidia.so.1 [0x7f8e3fa13bd6]

May be an issue with the underlying framework - still investigating

[xtknight]

Seems to be caused by this code in vdpau_driver.c, probably underlying issue in VDPAU wrapper. Will investigate further.

// XXX: this code causes backtraces when closing chromium windows and tabs
if (driver_data->vdp_device != VDP_INVALID_HANDLE) {
    vdpau_device_destroy(driver_data, driver_data->vdp_device);
    driver_data->vdp_device = VDP_INVALID_HANDLE;
}

ffmpeg calls vdp_video_surface_destroy, but VDPAU wrapper doesn't. Perhaps the extra surface handles lying around attached to the device in whatever way are causing the backtraces to print.