[FFmpeg-trac] #5126(ffmpeg:new): signed integer overflow in process_input_packet()

[FFmpeg]

#5126: signed integer overflow in process_input_packet()
--------------------------------+--------------------------------------
             Reporter:  tsmith  |                     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:
 UBSan runtime error: signed integer overflow: -9223372036854775808 +
 -894751520 cannot be represented in type 'long'

 How to reproduce:
 {{{
 % ffmpeg -f ivf -i <test_case> -f null -
 ffmpeg version N-77718-g72673ad Copyright (c) 2000-2016 the FFmpeg
 developers
   built with Ubuntu clang version 3.7.1-svn253742-1~exp1
 (branches/release_37) (based on LLVM 3.7.1)
   configuration: --cc=clang --cxx=clang++ --disable-libxcb --disable-xlib
 --disable-logging --disable-ffprobe --disable-ffplay --disable-sdl
 --disable-ffserver --disable-doc --disable-pthreads --disable-network
 --disable-d3d11va --disable-dxva2 --disable-vaapi --disable-vda --disable-
 vdpau --disable-stripping --disable-runtime-cpudetect --disable-
 securetransport --disable-iconv
   libavutil      55. 12.100 / 55. 12.100
   libavcodec     57. 22.100 / 57. 22.100
   libavformat    57. 21.101 / 57. 21.101
   libavdevice    57.  0.100 / 57.  0.100
   libavfilter     6. 23.100 /  6. 23.100
   libswscale      4.  0.100 /  4.  0.100
   libswresample   2.  0.101 /  2.  0.101
 [vp9 @ 0x619000005a80] Warning: not compiled with thread support, using
 thread emulation
 Input #0, ivf, from
 '/home/user/Desktop/vpx/corpus/0975850ab5eab1e17bb6913393f1bb2933a67f25':
   Duration: N/A, bitrate: N/A
     Stream #0:0: Video: vp9 (Profile 0) (VP90 / 0x30395056), yuv420p(tv),
 2x25, lossless, 0.0000 tbr, 0.0000 tbn, 0.0000 tbc
 [wrapped_avframe @ 0x619000003280] Warning: not compiled with thread
 support, using thread emulation
 [vp9 @ 0x619000003c80] Warning: not compiled with thread support, using
 thread emulation
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf57.21.101
     Stream #0:0: Video: wrapped_avframe, yuv420p, 2x25, q=2-31, 200 kb/s,
 0.0000 fps, 0.0000 tbn, 0.0000 tbc
     Metadata:
       encoder         : Lavc57.22.100 wrapped_avframe
 Stream mapping:
   Stream #0:0 -> #0:0 (vp9 (native) -> wrapped_avframe (native))
 Press [q] to stop, [?] for help
 ffmpeg.c:2335:31: runtime error: signed integer overflow:
 -9223372036854775808 + -894751520 cannot be represented in type 'long'
     #0 0x592a11 in process_input_packet
 /home/user/code/ffmpeg/ffmpeg.c:2330:31
     #1 0x5990bc in process_input /home/user/code/ffmpeg/ffmpeg.c:3980:5
     #2 0x5726c6 in transcode_step /home/user/code/ffmpeg/ffmpeg.c:4068:11
     #3 0x5726c6 in transcode /home/user/code/ffmpeg/ffmpeg.c:4122
     #4 0x56f73c in main /home/user/code/ffmpeg/ffmpeg.c:4314:9
     #5 0x7f22b2676ec4 in __libc_start_main /build/buildd/eglibc-2.19/csu
 /libc-start.c:287
     #6 0x466445 in _start (/home/user/Desktop/ffmpeg/ffmpeg_full+0x466445)
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5126>
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