[FFmpeg-trac] #3274(avcodec:open): vp9: deadlock with fuzzed file
FFmpeg
trac at avcodec.org
Thu Jan 9 00:12:54 CET 2014
#3274: vp9: deadlock with fuzzed file
-------------------------------------+-------------------------------------
Reporter: ami_stuff | Owner:
Type: defect | Status: open
Priority: important | Component: avcodec
Version: git-master | Resolution:
Keywords: vp9 | Blocked By:
deadlock regression | Reproduced by developer: 1
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by cehoyos):
Still reproducible:
{{{
(gdb) r -i vp9_d.webm -f null -
Starting program:ffmpeg_g -i vp9_d.webm -f null -
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
ffmpeg version N-59694-g2be1e1b Copyright (c) 2000-2014 the FFmpeg
developers
built on Jan 9 2014 00:02:05 with gcc 4.7 (SUSE Linux)
configuration: --enable-gpl
libavutil 52. 62.100 / 52. 62.100
libavcodec 55. 47.100 / 55. 47.100
libavformat 55. 22.102 / 55. 22.102
libavdevice 55. 5.102 / 55. 5.102
libavfilter 4. 0.103 / 4. 0.103
libswscale 2. 5.101 / 2. 5.101
libswresample 0. 17.104 / 0. 17.104
libpostproc 52. 3.100 / 52. 3.100
Input #0, matroska,webm, from 'vp9_d.webm':
Metadata:
encoder : Lavf55.22.102
Duration: 00:00:12.64, start: 0.000000, bitrate: 206 kb/s
Stream #0:0: Video: vp9, yuv420p, 320x240, SAR 1:1 DAR 4:3, 23.97 fps,
23.97 tbr, 1k tbn, 1k tbc (default)
[New Thread 0x7ffff57e5700 (LWP 6269)]
[New Thread 0x7ffff4fe4700 (LWP 6270)]
[New Thread 0x7ffff47e3700 (LWP 6271)]
[New Thread 0x7ffff3fe2700 (LWP 6272)]
[New Thread 0x7ffff37e1700 (LWP 6273)]
[New Thread 0x7ffff2fe0700 (LWP 6274)]
[New Thread 0x7ffff27df700 (LWP 6275)]
[New Thread 0x7ffff1fde700 (LWP 6276)]
[New Thread 0x7ffff17dd700 (LWP 6277)]
[New Thread 0x7ffff0fdc700 (LWP 6278)]
[New Thread 0x7ffff07db700 (LWP 6279)]
[New Thread 0x7fffeffda700 (LWP 6280)]
[New Thread 0x7fffef7d9700 (LWP 6281)]
[New Thread 0x7fffeefd8700 (LWP 6282)]
[New Thread 0x7fffee7d7700 (LWP 6283)]
[New Thread 0x7fffedfd6700 (LWP 6284)]
[New Thread 0x7fffed7d5700 (LWP 6285)]
[New Thread 0x7fffecfd4700 (LWP 6286)]
Output #0, null, to 'pipe:':
Metadata:
encoder : Lavf55.22.102
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 320x240
[SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 90k tbn, 23.97 tbc (default)
Stream mapping:
Stream #0:0 -> #0:0 (vp9 -> rawvideo)
Press [q] to stop, [?] for help
[null @ 0x1897ea0] Encoder did not produce proper pts, making some up.
Error while decoding stream #0:0: Invalid data found when processing input
Program received signal SIGINT, Interrupt.
0x00007ffff6ae68f4 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
(gdb) bt
#0 0x00007ffff6ae68f4 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib64/libpthread.so.0
#1 0x0000000000995d9b in ff_thread_decode_frame
(avctx=avctx at entry=0x1893960,
picture=picture at entry=0x190c160,
got_picture_ptr=got_picture_ptr at entry=0x7fffffffd7dc,
avpkt=avpkt at entry=0x7fffffffd560) at libavcodec/pthread_frame.c:452
#2 0x0000000000a40a38 in avcodec_decode_video2 (avctx=0x1893960,
picture=picture at entry=0x190c160,
got_picture_ptr=got_picture_ptr at entry=0x7fffffffd7dc,
avpkt=avpkt at entry=0x7fffffffda40) at libavcodec/utils.c:2120
#3 0x000000000047a400 in decode_video (ist=ist at entry=0x1893fc0,
pkt=pkt at entry=0x7fffffffda40,
got_output=got_output at entry=0x7fffffffd7dc)
at ffmpeg.c:1694
#4 0x000000000047d7ef in output_packet (pkt=0x7fffffffd9e0,
ist=0x1893fc0)
at ffmpeg.c:1907
#5 process_input (file_index=<optimized out>) at ffmpeg.c:3216
#6 0x0000000000465a80 in transcode_step () at ffmpeg.c:3312
#7 transcode () at ffmpeg.c:3364
#8 main (argc=<optimized out>, argv=<optimized out>) at ffmpeg.c:3544
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/3274#comment:3>
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