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On 2022-08-07 16:34:15 -0700, Marc Bevand wrote:
> Package: intel-media-va-driver
> Version: 22.4.3+dfsg1-1
> Severity: normal
> 
> Hi all, on my system when I try to play an H.264 file with VLC, it crashes 
> with a Segmentation Fault in iHD_drv_video.so.
> With debug symbols, the stack trace reported by gdb is:
> 
> #0  mos_bo_wait_rendering(mos_linux_bo*) (bo=0x0) at 
> ./media_driver/linux/common/os/i915/mos_bufmgr_api.c:138
> #1  0x00007fff15a4e3b1 in DdiMediaDecode::CreateBuffer(VABufferType, unsigned 
> int, unsigned int, void*, unsigned int*)
>     (this=0x7fff543aab10, type=VASliceDataBufferType, size=<optimized out>, 
> numElements=1, data=0x7fffc019dc73, bufId=0x7fff65f49a9c)
>     at ./media_driver/linux/common/codec/ddi/media_ddi_decode_base.cpp:1099
> #2  0x00007fff15a0e279 in DdiMedia_CreateBuffer(VADriverContext*, unsigned 
> int, VABufferType, unsigned int, unsigned int, void*, unsigned int*)
>     (bufId=0x7fff65f49a9c, data=0x7fffc019dc73, num_elements=1, size=16175, 
> type=VASliceDataBufferType, context=268435456, ctx=0x7fff54237160)
>     at ./media_driver/linux/common/ddi/media_libva.cpp:3247
> #3  DdiMedia_CreateBuffer(VADriverContext*, unsigned int, VABufferType, 
> unsigned int, unsigned int, void*, unsigned int*)
>     (ctx=0x7fff54237160, context=268435456, type=VASliceDataBufferType, 
> size=16175, num_elements=1, data=0x7fffc019dc73, bufId=0x7fff65f49a9c)
>     at ./media_driver/linux/common/ddi/media_libva.cpp:3215
> #4  0x00007fff6c193193 in vaCreateBuffer () at 
> /lib/x86_64-linux-gnu/libva.so.2
> #5  0x00007fff4074cb85 in  () at 
> /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_va_gl.so.1
> #6  0x00007fff4074d2ac in  () at 
> /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_va_gl.so.1
> #7  0x00007fff4074d879 in  () at 
> /usr/lib/x86_64-linux-gnu/vdpau/libvdpau_va_gl.so.1
> #8  0x00007fff6e911808 in  () at /lib/x86_64-linux-gnu/libavcodec.so.59
> #9  0x00007fff6e911c68 in  () at /lib/x86_64-linux-gnu/libavcodec.so.59
> #10 0x00007fff6e4b25e6 in  () at /lib/x86_64-linux-gnu/libavcodec.so.59
> #11 0x00007fff6e4c78e1 in  () at /lib/x86_64-linux-gnu/libavcodec.so.59
> #12 0x00007fff6e782f3b in  () at /lib/x86_64-linux-gnu/libavcodec.so.59
> #13 0x00007ffff7f6dd80 in start_thread (arg=0x7fff65f4b640) at 
> pthread_create.c:481
> #14 0x00007ffff7e81baf in clone () at 
> ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Sorry for the delay. There have been quite a few releases of the driver.
Does this issue still exist with the current version in unstable?

Cheers

> 
> I interpret this as "buf->bo" being NULL on line 1117 in 
> media_ddi_decode_base.cpp:
> https://github.com/intel/media-driver/blob/a47db3905e6f77b0666c6f10e3b9642cac9fafc8/media_driver/linux/common/codec/ddi/media_ddi_decode_base.cpp#L1117
> 
> 1115  if( true == buf->bCFlushReq )
> 1116  {
> 1117      mos_bo_wait_rendering(buf->bo);
> 1118  }
> 
> Since mos_bo_wait_rendering() is passed the NULL argument, a SIGSEGV is 
> raised when "bo" is dereferenced on line 116 in mos_bufmgr_api_mock.c:
> https://github.com/intel/media-driver/blob/master/media_driver/linux/ult/libdrm_mock/mos_bufmgr_api_mock.c#L116
> 
> 114   mos_bo_wait_rendering(struct mos_linux_bo *bo)
> 115   {
> 116      bo->bufmgr->bo_wait_rendering(bo);
> 117   }
> 
> My system info:
> 
> CPU: Intel(R) Core(TM) i5-10210U CPU @ 1.60GHz
> 
> $ vainfo
> libva info: VA-API version 1.15.0
> libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/iHD_drv_video.so
> libva info: Found init function __vaDriverInit_1_14
> libva info: va_openDriver() returns 0
> vainfo: VA-API version: 1.15 (libva 2.12.0)
> vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 22.4.3 ()
> vainfo: Supported profile and entrypoints
>       VAProfileMPEG2Simple            :       VAEntrypointVLD
>       VAProfileMPEG2Main              :       VAEntrypointVLD
>       VAProfileH264Main               :       VAEntrypointVLD
>       VAProfileH264Main               :       VAEntrypointEncSliceLP
>       VAProfileH264High               :       VAEntrypointVLD
>       VAProfileH264High               :       VAEntrypointEncSliceLP
>       VAProfileJPEGBaseline           :       VAEntrypointVLD
>       VAProfileJPEGBaseline           :       VAEntrypointEncPicture
>       VAProfileH264ConstrainedBaseline:       VAEntrypointVLD
>       VAProfileH264ConstrainedBaseline:       VAEntrypointEncSliceLP
>       VAProfileVP8Version0_3          :       VAEntrypointVLD
>       VAProfileHEVCMain               :       VAEntrypointVLD
>       VAProfileHEVCMain10             :       VAEntrypointVLD
>       VAProfileVP9Profile0            :       VAEntrypointVLD
>       VAProfileVP9Profile2            :       VAEntrypointVLD
> 
> -- System Information:
> Debian Release: bookworm/sid
>   APT prefers testing-debug
>   APT policy: (500, 'testing-debug'), (500, 'testing')
> Architecture: amd64 (x86_64)
> 
> Kernel: Linux 5.18.0-3-amd64 (SMP w/8 CPU threads; PREEMPT)
> Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_WARN, TAINT_OOT_MODULE, 
> TAINT_UNSIGNED_MODULE
> 
>   Note: my kernel is tainted because I install the ZFS kernel module via 
> zfs-dkms
> 
> Locale: LANG=C, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE not set
> Shell: /bin/sh linked to /usr/bin/dash
> Init: systemd (via /run/systemd/system)
> LSM: AppArmor: enabled
> 
> Versions of packages intel-media-va-driver depends on:
> ii  libc6                           2.33-8
> ii  libgcc-s1                       12.1.0-7
> ii  libigdgmm12                     22.1.5+ds1-1
> ii  libstdc++6                      12.1.0-7
> ii  libva2 [libva-driver-abi-1.14]  2.15.0-1
> 
> intel-media-va-driver recommends no packages.
> 
> intel-media-va-driver suggests no packages.
> 
> -- no debconf information
> 

-- 
Sebastian Ramacher

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