[FFmpeg-trac] #10071(undetermined:new): apng deadlock with fuzzed file

FFmpeg trac at avcodec.org
Fri Nov 25 13:24:53 EET 2022 

#10071: apng deadlock with fuzzed file
-------------------------------------+-------------------------------------
             Reporter:  ami_stuff    |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 {{{
 (gdb) r -i out_deadlock.apng -f null -
 Starting program: ffmpeg_g -i out_deadlock.apng -f null -
 [Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
 ffmpeg version N-109101-g822da7a317 Copyright (c) 2000-2022 the FFmpeg
 developers
   built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
   configuration: --enable-libopenjpeg
   libavutil      57. 42.100 / 57. 42.100
   libavcodec     59. 52.102 / 59. 52.102
   libavformat    59. 34.101 / 59. 34.101
   libavdevice    59.  8.101 / 59.  8.101
   libavfilter     8. 50.100 /  8. 50.100
   libswscale      6.  8.112 /  6.  8.112
   libswresample   4.  9.100 /  4.  9.100
 [apng @ 0x5555571456c0] Frame did not contain a complete image
 Input #0, apng, from 'out_deadlock.apng':
   Duration: N/A, bitrate: N/A
   Stream #0:0: Video: apng, rgb24(pc), 299x171 [SAR 1:1 DAR 299:171], 15
 fps, 15 tbr, 100k tbn
 [New Thread 0x7ffff6b6d700 (LWP 19838)]
 [New Thread 0x7ffff636c700 (LWP 19839)]
 [New Thread 0x7ffff5b6b700 (LWP 19840)]
 [New Thread 0x7ffff536a700 (LWP 19841)]
 [New Thread 0x7ffff4b69700 (LWP 19842)]
 [New Thread 0x7ffff4368700 (LWP 19843)]
 [New Thread 0x7ffff3b67700 (LWP 19844)]
 [New Thread 0x7ffff3366700 (LWP 19845)]
 [New Thread 0x7ffff2b65700 (LWP 19846)]
 Stream mapping:
   Stream #0:0 -> #0:0 (apng (native) -> wrapped_avframe (native))
 Press [q] to stop, [?] for help
 [New Thread 0x7ffff2364700 (LWP 19847)]
 [apng @ 0x55555715fb00] Frame did not contain a complete image
 [apng @ 0x555557158400] inflate returned error -3
 [apng @ 0x55555715c940] inflate returned error -3
 [apng @ 0x55555715b400] Frame did not contain a complete image
 [apng @ 0x555557144440] In-stream tag=fdAT (0x54416466) len=74 is not
 implemented. Update your FFmpeg version to the newest one from Git. If the
 problem still occurs, it means that your file has a feature which has not
 been implemented.
 [apng @ 0x555557144440] If you want to help, upload a sample of this file
 to https://streams.videolan.org/upload/ and contact the ffmpeg-devel
 mailing list. (ffmpeg-devel at ffmpeg.org)
 Error demuxing input file 0: Not yet implemented in FFmpeg, patches
 welcome
 [apng @ 0x555557169040] 10 undecompressed bytes left in buffer
 [Thread 0x7ffff2364700 (LWP 19847) exited]
 out_deadlock.apng: Not yet implemented in FFmpeg, patches welcome
 [New Thread 0x7ffff1b63700 (LWP 19848)]
 [New Thread 0x7ffff1362700 (LWP 19849)]
 [New Thread 0x7ffff0b61700 (LWP 19850)]
 [New Thread 0x7fffd3fff700 (LWP 19851)]
 [New Thread 0x7fffd37fe700 (LWP 19852)]
 [New Thread 0x7fffd2ffd700 (LWP 19853)]
 [New Thread 0x7fffd27fc700 (LWP 19854)]
 [New Thread 0x7fffd1ffb700 (LWP 19855)]
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf59.34.101
   Stream #0:0: Video: wrapped_avframe, rgb24(pc, progressive), 299x171
 [SAR 1:1 DAR 299:171], q=2-31, 200 kb/s, 15 fps, 15 tbn
     Metadata:
       encoder         : Lavc59.52.102 wrapped_avframe
 [New Thread 0x7fffd17fa700 (LWP 19856)]
 frame=    0 fps=0.0 q=-0.0 size=       0kB time=00:00:00.00 bitrate=N/A
 speed=  out_deadlock.apng: Not yet implemented in FFmpeg, patches welcome
 Error while decoding stream #0:0: Generic error in an external library
 out_deadlock.apng: Not yet implemented in FFmpeg, patches welcome
     Last message repeated 1 times
 Error while decoding stream #0:0: Generic error in an external library
 out_deadlock.apng: Not yet implemented in FFmpeg, patches welcome
 Error while decoding stream #0:0: Invalid data found when processing input
 out_deadlock.apng: Not yet implemented in FFmpeg, patches welcome
 Error while decoding stream #0:0: Invalid data found when processing input
 out_deadlock.apng: Not yet implemented in FFmpeg, patches welcome
 Error while decoding stream #0:0: Invalid data found when processing input
 out_deadlock.apng: Not yet implemented in FFmpeg, patches welcome
 --Type <RET> for more, q to quit, c to continue without paging--

 Thread 1 "ffmpeg_g" received signal SIGINT, Interrupt.
 futex_wait_cancelable (private=<optimized out>, expected=0,
     futex_word=0x555557155cc0) at ../sysdeps/nptl/futex-internal.h:183
 (gdb) bt
 #0  futex_wait_cancelable (private=<optimized out>, expected=0,
     futex_word=0x555557155cc0) at ../sysdeps/nptl/futex-internal.h:183
 #1  __pthread_cond_wait_common (abstime=0x0, clockid=0,
 mutex=0x555557155cf0,
     cond=0x555557155c98) at pthread_cond_wait.c:508
 #2  __pthread_cond_wait (cond=cond at entry=0x555557155c98,
     mutex=mutex at entry=0x555557155cf0) at pthread_cond_wait.c:647
 #3  0x0000555555e45e5b in ff_thread_decode_frame (
     avctx=avctx at entry=0x555557146f40,
 picture=picture at entry=0x55555714b740,
     got_picture_ptr=got_picture_ptr at entry=0x7fffffffda0c,
     avpkt=avpkt at entry=0x55555715ed00) at libavcodec/pthread_frame.c:589
 #4  0x0000555555bbad3e in decode_simple_internal (
     discarded_samples=<synthetic pointer>, frame=0x55555714b740,
     avctx=0x555557146f40) at libavcodec/decode.c:305
 #5  decode_simple_receive_frame (frame=<optimized out>, avctx=<optimized
 out>)
     at libavcodec/decode.c:563
 #6  decode_receive_frame_internal (avctx=avctx at entry=0x555557146f40,
     frame=frame at entry=0x55555714b740) at libavcodec/decode.c:584
 #7  0x0000555555bbb7ab in ff_decode_receive_frame (avctx=0x555557146f40,
     frame=0x55555714b740) at libavcodec/decode.c:711
 #8  0x0000555555711778 in decode (pkt=<optimized out>,
     got_frame=0x7fffffffdb80, frame=0x55555714b740, avctx=<optimized out>)
     at fftools/ffmpeg.c:2006
 #9  decode_video (ist=0x555557146d40, pkt=0x5555571479c0,
 --Type <RET> for more, q to quit, c to continue without paging--
     got_output=0x7fffffffdb80, duration_pts=0x7fffffffdb88, eof=1,
     decode_failed=0x7fffffffdb84) at fftools/ffmpeg.c:2124
 #10 0x0000555555711ff0 in process_input_packet (ist=0x555557146d40,
 no_eof=0,
     pkt=0x0) at fftools/ffmpeg.c:2362
 #11 0x000055555571383f in process_input (file_index=<optimized out>)
     at fftools/ffmpeg.c:3658
 #12 transcode_step () at fftools/ffmpeg.c:3858
 #13 transcode () at fftools/ffmpeg.c:3905
 #14 0x00005555556eb18b in main (argc=6, argv=0x7fffffffdf58)
     at fftools/ffmpeg.c:4052
 (gdb)
 }}}
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10071>
FFmpeg <https://ffmpeg.org>
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