segfault error 4 in iHD_drv_video.so

[aniketor]

System information

• CPU information: 11th Gen Intel(R) Core(TM) i5-1135G7 @ 2.40GHz
• GPU information: Intel Corporation TigerLake-LP GT2 [Iris Xe Graphics] [8086:9a49] (rev 01)
• Display server: X
• Kernel: Debian 5.10.46-4~bpo10+1 (2021-08-07) x86_64 GNU/Linux

Issue

iHD driver segfault while running my gstreamer pipeline (vaapih264enc)

[1072319.913878] queue1:src[8162]: segfault at 7f313c23a000 ip 00007f318b49e79c sp 00007f315df5e170 error 4 in iHD_drv_video.so[7f318af4c000+20f2000]

Pipline as follows:

'v4l2src' 'device=/dev/video0' 'do-timestamp=true' '!' 'video/x-raw,width=1280,height=720' '!' 'videoconvert' '!' 'video/x-raw,format=I420' '!' 'videorate' '!' 'video/x-raw,framerate=15/1' '!' 'queue' 'leaky=downstream' '!' 'videoconvert' '!' 'video/x-raw,format=NV12' '!' 'vaapih264enc' 'rate-control=1' 'bitrate=1036' 'keyframe-period=45' '!' 'video/x-h264,profile=constrained-baseline' '!' 'h264parse' '!' 'video/x-h264,stream-format=avc' '!' 'mp4mux' '!' 'filesink' 'location=./out.mp4'

Debug information

• gst-inspect vaapi

Plugin Details:
  Name                     vaapi
  Description              VA-API based elements
  Filename                 /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstvaapi.so
  Version                  1.16.2
  License                  LGPL
  Source module            gstreamer-vaapi
  Source release date      2019-12-03
  Binary package           gstreamer-vaapi
  Origin URL               http://bugzilla.gnome.org/enter_bug.cgi?product=GStreamer

  vaapih264feienc: VA-API H264 FEI Advanced encoder (Experimental)
  vaapih264enc: VA-API H264 encoder
  vaapijpegenc: VA-API JPEG encoder
  vaapih265enc: VA-API H265 encoder
  vaapimpeg2enc: VA-API MPEG-2 encoder
  vaapisink: VA-API sink
  vaapidecodebin: VA-API Decode Bin
  vaapipostproc: VA-API video postprocessing
  vaapih265dec: VA-API H265 decoder
  vaapivp9dec: VA-API VP9 decoder
  vaapivp8dec: VA-API VP8 decoder
  vaapivc1dec: VA-API VC1 decoder
  vaapih264dec: VA-API H264 decoder
  vaapimpeg2dec: VA-API MPEG2 decoder
  vaapijpegdec: VA-API JPEG decoder

  15 features:
  +-- 15 elements

• What's libva/libva-utils/gmmlib/media-driver version:

libva info: VA-API version 1.13.0
libva info: User environment variable requested driver 'iHD'
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
libva info: Found init function __vaDriverInit_1_13
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.13 (libva 2.13.0)
vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 21.3.5 (ec4dc5d6)
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
      VAProfileVP8Version0_3          :	VAEntrypointVLD
      VAProfileHEVCMain               :	VAEntrypointVLD
      VAProfileHEVCMain               :	VAEntrypointEncSlice
      VAProfileHEVCMain               :	VAEntrypointFEI
      VAProfileHEVCMain               :	VAEntrypointEncSliceLP
      VAProfileHEVCMain10             :	VAEntrypointVLD
      VAProfileHEVCMain10             :	VAEntrypointEncSlice
      VAProfileHEVCMain10             :	VAEntrypointEncSliceLP
      VAProfileVP9Profile0            :	VAEntrypointVLD
      VAProfileVP9Profile1            :	VAEntrypointVLD
      VAProfileVP9Profile2            :	VAEntrypointVLD
      VAProfileVP9Profile3            :	VAEntrypointVLD
      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

• ls /dev/dri
  card0 renderD128
• libva trace
  libva_trace.log.1211.zip
• dmesg >dmesg.log 2>&1
  dmesg.log

[aniketor]

I found below in dmesg:
uvcvideo: Failed to resubmit video URB
kernel issue?
Edit: The issue behaviour is random. Sometimes the pipeline runs successfully, other times it doesn't.

[Simon-Martens]

I had a similar issue (segfault with error 4) and resolved it temporarily by using the non-free version of the driver. I know it's just a workaround, but maybe it helps.

[aniketor]

Thanks @schnulller for your suggestion. I forgot to mention that I have compiled libva and intel-media-driver from source so installing it from non-free wouldn't help much I guess. I have tried from non-free anyways that creates a whole new issue with the backported kernel as vainfo fails to initialize in that case.

[Jexu]

Could share the reproduce steps, call stack log or crash point in media driver?

[zlice]

Similar issue with shotcut/mlt7(melt7)

sys info

• kernel 6.1-rc8 drm-tip
• intel-media-sdk / libmfx 2.6.4
• intel-media-driver 2.6.4
• intel-gmmlib 22.3.2
• ffmpeg 4.4.3
• mlt7 7.8.0 / 7.12.0
• shotcut beta (doesn't crash, melt7 does)

files

segfault.txt (command melt-7 -verbose shotcut-cHoyVM.mlt)

shotcut-cHOyVM.mlt.txt

[XinfengZhang]

could you help to share more info, such as reproduce method, or call stack in media driver? compile media driver and run again, you will get it with gdb

[zlice]

fwiw - Believe my issue was fixed by #1580 e68feab7d

[XinfengZhang]

thanks, lets close it, feel free do reopen it if there are further concern , or recreate one