[FFmpeg-trac] #1640(undetermined:new): ffplay crashes after seeking in corrupted dvvideo

[FFmpeg]

#1640: ffplay crashes after seeking in corrupted dvvideo
-------------------------------------+-------------------------------------
               Reporter:  ami_stuff  |                  Owner:
                   Type:  defect     |                 Status:  new
               Priority:  normal     |              Component:
                Version:             |  undetermined
  unspecified                        |               Keywords:
             Blocked By:             |               Blocking:
Reproduced by developer:  0          |  Analyzed by developer:  0
-------------------------------------+-------------------------------------
 please seek a few times to reproduce (maybe invalid read)

 {{{
 (gdb) r dvvideo.avi
 Starting program: d:\mingw\msys\1.0\ffmpeg-head-70f0ffa\ffplay_g.exe
 dvvideo.avi

 [New Thread 1148.0x18c]
 [New Thread 1148.0x7c0]
 [New Thread 1148.0x5b8]
 [New Thread 1148.0x5a8]
 [New Thread 1148.0x150]
 [New Thread 1148.0x148]
 [New Thread 1148.0x42c]
 [New Thread 1148.0x7d0]

 Program received signal SIGSEGV, Segmentation fault.
 [Switching to Thread 1148.0x5b8]
 0x0049b7f9 in ff_dv_offset_reset (c=0x48b0e20, frame_offset=171)
     at libavformat/dv.c:423
 423             c->abytes= av_rescale_q(c->frames, c->sys->time_base,
 (gdb) bt
 #0  0x0049b7f9 in ff_dv_offset_reset (c=0x48b0e20, frame_offset=171)
     at libavformat/dv.c:423
 #1  0x0048fa85 in avi_read_seek (s=0x48a0060, stream_index=0,
 timestamp=171,
     flags=1) at libavformat/avidec.c:1474
 #2  0x00470ff6 in seek_frame_internal (s=0x48a0060, stream_index=0,
     timestamp=171, flags=1) at libavformat/utils.c:1961
 #3  0x0047162f in av_seek_frame (flags=1, timestamp=6829111,
 stream_index=-1,
     s=0x48a0060) at libavformat/utils.c:1985
 #4  avformat_seek_file (s=0x48a0060, stream_index=-1,
     min_ts=-9223372036854775808, ts=6829111, max_ts=9223372036854775807,
     flags=0) at libavformat/utils.c:2014
 #5  0x00406a90 in read_thread (arg=0x45a0040) at ffplay.c:2486
 #6  0x681097ee in SDL_RunThread (data=0x42cfbd8)
     at ./src/thread/SDL_thread.c:204
 #7  0x681327d3 in RunThread (data=0x42cfcd8)
     at ./src/thread/win32/SDL_systhread.c:74
 #8  RunThreadViaBeginThreadEx (data=0x42cfcd8)
     at ./src/thread/win32/SDL_systhread.c:95
 #9  0x77c2a3b0 in msvcrt!_endthreadex () from
 C:\WINDOWS\system32\msvcrt.dll
 #10 0x7c80b729 in KERNEL32!GetModuleFileNameA ()
    from C:\WINDOWS\system32\kernel32.dll
 #11 0x00000000 in ?? ()
 (gdb)
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1640>
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