[FFmpeg-trac] #6805(undetermined:new): deadlock with fuzzed file

FFmpeg trac at avcodec.org
Sat Nov 4 00:47:37 EET 2017


#6805: deadlock with fuzzed file
-------------------------------------+-------------------------------------
               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
-------------------------------------+-------------------------------------
 attached fuzzed file deadlocks ffmpeg for some longer time

 {{{
 (gdb) r -i ../deadlock_fuzz.mov
 Starting program: /media/sdb1/ffmpeg/ffmpeg_g -i ../deadlock_fuzz.mov
 [Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
 ffmpeg version 3.4.git Copyright (c) 2000-2017 the FFmpeg developers
   built with gcc 5.3.0 (Ubuntu 5.3.0-3ubuntu1~14.04) 20151204
   configuration: --enable-gpl --disable-ffprobe --disable-ffserver
   libavutil      56.  0.100 / 56.  0.100
   libavcodec     58.  1.100 / 58.  1.100
   libavformat    58.  0.102 / 58.  0.102
   libavdevice    58.  0.100 / 58.  0.100
   libavfilter     7.  0.101 /  7.  0.101
   libswscale      5.  0.101 /  5.  0.101
   libswresample   3.  0.101 /  3.  0.101
   libpostproc    55.  0.100 / 55.  0.100

 Program received signal SIGINT, Interrupt.
 0xb7fdccb0 in ?? ()
 (gdb) bt
 Python Exception <class 'gdb.MemoryError'> Cannot access memory at address
 0x8004:
 #0  0xb7fdccb0 in ?? ()
 Cannot access memory at address 0x8004
 (gdb)
 }}}

--
Ticket URL: <https://trac.ffmpeg.org/ticket/6805>
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