VAAPI VP9 Encode on Rocket Lake Crashes - GPU HANG

- 11th Gen Intel(R) Core(TM) i7-11700K @ 3.60GHz
- 00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:4c8a] (rev 04)
- Linux videncode0 5.10.0-8-amd64

GPU hangs when HW VP9 encoding using ffmpeg + vp9_vaapi:
```
ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i input.mp4 -c:v vp9_vaapi -b:v 2M -maxrate 2M output.mp4
```

dmesg shows:
```
[15607.512076] i915 0000:00:02.0: [drm] Resetting vcs0 for preemption time out
[15607.512175] i915 0000:00:02.0: [drm] ffmpeg[125068] context reset due to GPU hang
[15607.514726] i915 0000:00:02.0: [drm] GPU HANG: ecode 12:4:28ffff7d, in ffmpeg [125068]
```

The current packages are installed:

- intel-media-va-driver-non-free:amd64 21.1.1+ds1-1
- intel-gpu-tools 1.25-2.1
- intel-media-va-driver-non-free:amd64 21.1.1+ds1-1
- libdrm-intel1:amd64 2.4.104-1
- intel-microcode 3.20210608.2

LIBVA_TRACE shows:

```
[34956.839240][ctx none]=========vaMapBuffer ret = VA_STATUS_ERROR_ENCODING_ERROR, internal encoding error
```

```
ls /dev/dri
by-path card0 renderD128
```

```
cat vainfo.log
error: XDG_RUNTIME_DIR not set in the environment.
error: can't connect to X server!
libva info: Open new log file /tmp/libva_trace.log.004941.thd-0x0001fb72 for the thread 0x0001fb72
libva info: LIBVA_TRACE is on, save log into /tmp/libva_trace.log.004941.thd-0x0001fb72
libva info: VA-API version 1.10.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
libva info: Found init function __vaDriverInit_1_10
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.10 (libva 2.10.0)
vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 21.1.1 ()
vainfo: Supported profile and entrypoints
VAProfileNone : VAEntrypointVideoProc
VAProfileNone : VAEntrypointStats
VAProfileMPEG2Simple : VAEntrypointVLD
VAProfileMPEG2Simple : VAEntrypointEncSlice
VAProfileMPEG2Main : VAEntrypointVLD
VAProfileMPEG2Main : VAEntrypointEncSlice
VAProfileH264Main : VAEntrypointVLD
VAProfileH264Main : VAEntrypointEncSlice
VAProfileH264Main : VAEntrypointFEI
VAProfileH264Main : VAEntrypointEncSliceLP
VAProfileH264High : VAEntrypointVLD
VAProfileH264High : VAEntrypointEncSlice
VAProfileH264High : VAEntrypointFEI
VAProfileH264High : VAEntrypointEncSliceLP
VAProfileVC1Simple : VAEntrypointVLD
VAProfileVC1Main : VAEntrypointVLD
VAProfileVC1Advanced : VAEntrypointVLD
VAProfileJPEGBaseline : VAEntrypointVLD
VAProfileJPEGBaseline : VAEntrypointEncPicture
VAProfileH264ConstrainedBaseline: VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
VAProfileH264ConstrainedBaseline: VAEntrypointFEI
VAProfileH264ConstrainedBaseline: VAEntrypointEncSliceLP
VAProfileHEVCMain : VAEntrypointVLD
VAProfileHEVCMain : VAEntrypointEncSlice
VAProfileHEVCMain : VAEntrypointFEI
VAProfileHEVCMain : VAEntrypointEncSliceLP
VAProfileHEVCMain10 : VAEntrypointVLD
VAProfileHEVCMain10 : VAEntrypointEncSlice
VAProfileHEVCMain10 : VAEntrypointEncSliceLP
VAProfileVP9Profile0 : VAEntrypointVLD
VAProfileVP9Profile0 : VAEntrypointEncSliceLP
VAProfileVP9Profile1 : VAEntrypointVLD
VAProfileVP9Profile1 : VAEntrypointEncSliceLP
VAProfileVP9Profile2 : VAEntrypointVLD
VAProfileVP9Profile2 : VAEntrypointEncSliceLP
VAProfileVP9Profile3 : VAEntrypointVLD
VAProfileVP9Profile3 : VAEntrypointEncSliceLP
VAProfileHEVCMain12 : VAEntrypointVLD
VAProfileHEVCMain12 : VAEntrypointEncSlice
VAProfileHEVCMain422_10 : VAEntrypointVLD
VAProfileHEVCMain422_10 : VAEntrypointEncSlice
VAProfileHEVCMain422_12 : VAEntrypointVLD
VAProfileHEVCMain422_12 : VAEntrypointEncSlice
VAProfileHEVCMain444 : VAEntrypointVLD
VAProfileHEVCMain444 : VAEntrypointEncSliceLP
VAProfileHEVCMain444_10 : VAEntrypointVLD
VAProfileHEVCMain444_10 : VAEntrypointEncSliceLP
VAProfileHEVCMain444_12 : VAEntrypointVLD
VAProfileHEVCSccMain : VAEntrypointVLD
VAProfileHEVCSccMain : VAEntrypointEncSliceLP
VAProfileHEVCSccMain10 : VAEntrypointVLD
VAProfileHEVCSccMain10 : VAEntrypointEncSliceLP
VAProfileHEVCSccMain444 : VAEntrypointVLD
VAProfileHEVCSccMain444 : VAEntrypointEncSliceLP
VAProfileAV1Profile0 : VAEntrypointVLD
VAProfileHEVCSccMain444_10 : VAEntrypointVLD
VAProfileHEVCSccMain444_10 : VAEntrypointEncSliceLP
```

I have tried kernels 5.10 - 5.14, tried compiling media-driver from source, tried gstreamer and also intel_qsv instead of vaapi. All encoding works for H.264 and H.265 - only VP9 fails. 1 out of 5 times it works successfully, the remaining times it begins and randomly fails.