[FFmpeg-trac] #6460(undetermined:new): Invalid free() in vp9.c

[FFmpeg]

#6460: Invalid free() in vp9.c
-------------------------------------+-------------------------------------
             Reporter:  tsmith       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 How to reproduce:
 {{{
 ./ffmpeg -f ivf -i test_case.ivf -frames 5 -f null -
 ffmpeg version N-86447-gfeb13ae Copyright (c) 2000-2017 the FFmpeg
 developers
   built with clang version 3.8.0-2ubuntu4 (tags/RELEASE_380/final)
   configuration: --cc=clang --cxx=clang++ --disable-libxcb --disable-xlib
 --disable-logging --disable-ffprobe --disable-ffplay --disable-sdl2
 --disable-ffserver --disable-doc --disable-pthreads --disable-network
 --disable-d3d11va --disable-dxva2 --disable-vaapi --disable-vda --disable-
 vdpau --disable-stripping --disable-runtime-cpudetect --disable-postproc
 --disable-securetransport --disable-iconv --disable-swscale --disable-
 avdevice --disable-videotoolbox --disable-everything --enable-
 encoder=wrapped_avframe --disable-lzma --enable-protocol='file,pipe'
 --enable-muxer=null --enable-demuxer=ivf --enable-parser=vp9 --enable-
 decoder=vp9 --disable-pic
   libavutil      55. 63.100 / 55. 63.100
   libavcodec     57. 98.100 / 57. 98.100
   libavformat    57. 73.100 / 57. 73.100
   libavfilter     6. 92.100 /  6. 92.100
   libswresample   2.  8.100 /  2.  8.100

 Invalid free() / delete / delete[] / realloc()
    at 0x4C2EDEB: free (in /usr/lib/valgrind/vgpreload_memcheck-
 amd64-linux.so)
    by 0x6D5882: av_free (mem.c:209)
    by 0x6D5882: av_freep (mem.c:219)
    by 0x4DFF5E: free_buffers (vp9.c:1071)
    by 0x4DFF5E: vp9_decode_free (vp9.c:1092)
    by 0x4D5F30: avcodec_close (utils.c:1179)
    by 0x4362A5: transcode (ffmpeg.c:4634)
    by 0x42DFAD: main (ffmpeg.c:4748)
  Address 0x6dc06ef07040717 is not stack'd, malloc'd or (recently) free'd
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/6460>
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