MediaPlayer troubles on x86_64

[kallisti5]

It looks like hrev48484 introduced a bug on x86_64 while playing 10-bit Matroska video files.

Playing the following media files results in a crash of media player:

ffprobe KILL\ la\ KILL\ -\ 01.mkv 
ffprobe version 2.4.3 Copyright (c) 2007-2014 the FFmpeg developers
  built on Nov  2 2014 09:16:45 with gcc 4.9.1 (GCC) 20140903 (prerelease)
  configuration: --prefix=/usr --disable-debug --disable-static --disable-stripping --enable-avisynth --enable-avresample --enable-fontconfig --enable-gnutls --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libfribidi --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-runtime-cpudetect --enable-shared --enable-swresample --enable-vdpau --enable-version3 --enable-x11grab
  libavutil      54.  7.100 / 54.  7.100
  libavcodec     56.  1.100 / 56.  1.100
  libavformat    56.  4.101 / 56.  4.101
  libavdevice    56.  0.100 / 56.  0.100
  libavfilter     5.  1.100 /  5.  1.100
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  0.100 /  3.  0.100
  libswresample   1.  1.100 /  1.  1.100
  libpostproc    53.  0.100 / 53.  0.100
[matroska,webm @ 0x9a64a0] Unknown entry 0x437E
    Last message repeated 3 times
Input #0, matroska,webm, from 'KILL la KILL - 01.mkv':
  Metadata:
    title           : KILL la KILL - 01 - If Only I Had Thorns Like a Thistle
    encoder         : libebml v1.2.2 + libmatroska v1.3.0
    creation_time   : 2013-10-04 10:37:26
  Duration: 00:24:27.74, start: 0.000000, bitrate: 3239 kb/s
    Chapter #0.0: start 0.000000, end 265.223000
    Metadata:
      title           : Intro
    Chapter #0.1: start 265.263000, end 1362.027000
    Metadata:
      title           : Episode
    Chapter #0.2: start 1362.068000, end 1451.992000
    Metadata:
      title           : Ending
    Chapter #0.3: start 1452.032000, end 1467.007000
    Metadata:
      title           : Next episode preview
    Stream #0:0(eng): Video: h264 (High 10), yuv420p10le(tv, bt709), 1280x720, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    Metadata:
      title           : H.264 (10-bit)
    Stream #0:1(jpn): Audio: aac, 44100 Hz, stereo, fltp (default) (forced)
    Metadata:
      title           : Japanese 2.0 AAC
    Stream #0:2(eng): Subtitle: ass (default)
    Metadata:
      title           : English subtitles
    Stream #0:3: Attachment: ttf
    Metadata:
      filename        : HiraginoGyoDS-W4.ttf
      mimetype        : application/x-truetype-font
    Stream #0:4: Attachment: ttf
    Metadata:
      filename        : Painfresco-Italic.ttf
      mimetype        : application/x-truetype-font
    Stream #0:5: Attachment: ttf
    Metadata:
      filename        : Painfresco-Regular.ttf
      mimetype        : application/x-truetype-font
    Stream #0:6: Attachment: ttf
    Metadata:
      filename        : Signika-Regular.otf
      mimetype        : application/x-truetype-font
    Stream #0:7: Attachment: ttf
    Metadata:
      filename        : 123-and...-Regular.ttf
      mimetype        : application/x-truetype-font
    Stream #0:8: Attachment: ttf
    Metadata:
      filename        : Babylon-27-Babylon-27.ttf
      mimetype        : application/x-truetype-font
    Stream #0:9: Attachment: ttf
    Metadata:
      filename        : BeeMarkerInk.TTF
      mimetype        : application/x-truetype-font
    Stream #0:10: Attachment: ttf
    Metadata:
      filename        : Franchise-Bold-hinted.ttf
      mimetype        : application/x-truetype-font
Unsupported codec with id 98304 for input stream 3
Unsupported codec with id 98304 for input stream 4
Unsupported codec with id 98304 for input stream 5
Unsupported codec with id 98304 for input stream 6
Unsupported codec with id 98304 for input stream 7
Unsupported codec with id 98304 for input stream 8
Unsupported codec with id 98304 for input stream 9
Unsupported codec with id 98304 for input stream 10

[kallisti5]

debug report