[FFmpeg-trac] #9122(ffmpeg:new): floating pointer exception when extracting frames from the video

[FFmpeg]

#9122: floating pointer exception when extracting frames from the video
--------------------------------+--------------------------------------
             Reporter:  bird    |                     Type:  defect
               Status:  new     |                 Priority:  normal
            Component:  ffmpeg  |                  Version:  git-master
             Keywords:          |               Blocked By:
             Blocking:          |  Reproduced by developer:  0
Analyzed by developer:  0       |
--------------------------------+--------------------------------------
 Summary of the bug:
 There is a floating pointer exception when extracting frames from the
 video.
 How to reproduce:
 {{{
 $ ./ffmpeg_g -ss 0 -i ./3 -s 320x240 -y -f image2 output.jpeg
 ffmpeg version N-101261-g78d5e1c653 Copyright (c) 2000-2021 the FFmpeg
 developers
   built with clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
   configuration: --prefix=/home/bird/ffmpeg_build_new --pkg-config-
 flags=--static --extra-cflags='-I/home/bird/ffmpeg_build_new/include -fno-
 omit-frame-pointer -g -fsanitize=address' --extra-cxxflags='-fno-omit-
 frame-pointer -g -fsanitize=address' --extra-
 ldflags='-L/home/bird/ffmpeg_build_new/lib -fsanitize=address' --extra-
 libs='-lpthread -lm' --bindir=/home/bird/bin_new --enable-gpl --enable-
 gnutls --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-
 libmp3lame --enable-libopus --enable-libvpx --enable-libx264 --enable-
 libx265 --enable-nonfree --cc=clang --cxx=clang++ --enable-debug
   libavutil      56. 66.100 / 56. 66.100
   libavcodec     58.125.100 / 58.125.100
   libavformat    58. 68.100 / 58. 68.100
   libavdevice    58. 12.100 / 58. 12.100
   libavfilter     7.107.100 /  7.107.100
   libswscale      5.  8.100 /  5.  8.100
   libswresample   3.  8.100 /  3.  8.100
   libpostproc    55.  8.100 / 55.  8.100
 [NULL @ 0x619000000f80] Too many or invalid channels: 979726457
 [vpk @ 0x61b000000080] Failed to open codec in avformat_find_stream_info
 [NULL @ 0x619000000f80] Too many or invalid channels: 979726457
 [vpk @ 0x61b000000080] Failed to open codec in avformat_find_stream_info
 [vpk @ 0x61b000000080] Could not find codec parameters for stream 0
 (Audio: adpcm_psx, 1412265070 Hz, 979726457 channels): unspecified sample
 format
 Consider increasing the value for the 'analyzeduration' (0) and
 'probesize' (5000000) options
 AddressSanitizer:DEADLYSIGNAL
 =================================================================
 ==15502==ERROR: AddressSanitizer: FPE on unknown address 0x00000116ed50
 (pc 0x00000116ed50 bp 0x0c2200000067 sp 0x7fffb98e8600 T0)
     #0 0x116ed4f in vpk_read_seek
 /disk1/fuzzing/ffmpeg_latest/libavformat/vpk.c:124:15
     #1 0x1142360 in seek_frame_internal
 /disk1/fuzzing/ffmpeg_latest/libavformat/utils.c:2449:15
     #2 0x1142360 in av_seek_frame
 /disk1/fuzzing/ffmpeg_latest/libavformat/utils.c:2481
     #3 0x11439ff in avformat_seek_file
 /disk1/fuzzing/ffmpeg_latest/libavformat/utils.c:2533:19
     #4 0x51dd2d in open_input_file
 /disk1/fuzzing/ffmpeg_latest/fftools/ffmpeg_opt.c:1252:15
     #5 0x51c42a in open_files
 /disk1/fuzzing/ffmpeg_latest/fftools/ffmpeg_opt.c:3335:15
     #6 0x51be55 in ffmpeg_parse_options
 /disk1/fuzzing/ffmpeg_latest/fftools/ffmpeg_opt.c:3375:11
     #7 0x55ba9f in main
 /disk1/fuzzing/ffmpeg_latest/fftools/ffmpeg.c:4964:11
     #8 0x7fcc09366bf6 in __libc_start_main /build/glibc-
 S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310
     #9 0x423609 in _start (/disk1/fuzzing/ffmpeg_latest/ffmpeg_g+0x423609)

 AddressSanitizer can not provide additional info.
 SUMMARY: AddressSanitizer: FPE
 /disk1/fuzzing/ffmpeg_latest/libavformat/vpk.c:124:15 in vpk_read_seek
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/9122>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker