[FFmpeg-trac] #7472(avcodec:new): double free detected in avcodec_close after rtmp streaming with h264 codec

[FFmpeg]

#7472: double free detected in avcodec_close after rtmp streaming with h264 codec
-------------------------------------+-------------------------------------
             Reporter:               |                     Type:  defect
  andreanobile                       |                 Priority:  important
               Status:  new          |                  Version:
            Component:  avcodec      |  unspecified
             Keywords:  double free  |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 How to reproduce:
 {{{
 ./streamer <video file>
 ffmpeg version: git master

 compiled with:
 PATH="$HOME/bin:$PATH" PKG_CONFIG_PATH="$HOME/ffmpeg_build/lib/pkgconfig"
 ./configure   --prefix="$HOME/ffmpeg_build"    --extra-
 cflags="-I$HOME/ffmpeg_build/include"   --extra-
 ldflags="-L$HOME/ffmpeg_build/lib"   --extra-libs="-lpthread -lm"
 --bindir="$HOME/bin"   --enable-gpl   --enable-libaom   --enable-libass
 --enable-libfdk-aac   --enable-libfreetype   --enable-libmp3lame
 --enable-libopus   --enable-libvorbis   --enable-libvpx   --enable-libx264
 --enable-libx265 --enable-shared  --enable-nonfree --enable-pic --extra-
 ldexeflags=-pie --pkg-config-flags="--static" --enable-debug &&
 PATH="$HOME/bin:$PATH" make -j4 && make install

 address sanitizer output:
 ==4937==ERROR: AddressSanitizer: attempting double-free on 0x618000001480
 in thread T0:
     #0 0x7f33dab397b8 in __interceptor_free (/usr/lib/x86_64-linux-
 gnu/libasan.so.4+0xde7b8)
     #1 0x7f33d8cb8ff9
 (/home/andrea/ffmpeg_build/lib/libavcodec.so.58+0xb1ff9)
     #2 0x7f33d8cd4a4d in avcodec_close
 (/home/andrea/ffmpeg_build/lib/libavcodec.so.58+0xcda4d)
     #3 0x5632c2af4406 in Streamer::~Streamer()
 /home/andrea/computer_vision/streamer/main.cpp:280
     #4 0x5632c2af520e in main
 /home/andrea/computer_vision/streamer/main.cpp:292
     #5 0x7f33d5ab8b96 in __libc_start_main (/lib/x86_64-linux-
 gnu/libc.so.6+0x21b96)
     #6 0x5632c2af05d9 in _start
 (/home/andrea/computer_vision/streamer/build/streamer+0x205d9)

 0x618000001480 is located 0 bytes inside of 731-byte region
 [0x618000001480,0x61800000175b)
 freed by thread T0 here:
     #0 0x7f33dab397b8 in __interceptor_free (/usr/lib/x86_64-linux-
 gnu/libasan.so.4+0xde7b8)
     #1 0x7f33d92d3225 in avcodec_parameters_free
 (/home/andrea/ffmpeg_build/lib/libavcodec.so.58+0x6cc225)

 previously allocated by thread T0 here:
     #0 0x7f33dab3a7a0 in posix_memalign (/usr/lib/x86_64-linux-
 gnu/libasan.so.4+0xdf7a0)
     #1 0x7f33d8566532 in av_malloc
 (/home/andrea/ffmpeg_build/lib/libavutil.so.56+0x2d532)

 SUMMARY: AddressSanitizer: double-free (/usr/lib/x86_64-linux-
 gnu/libasan.so.4+0xde7b8) in __interceptor_free
 ==4937==ABORTING

 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/7472>
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