[FFmpeg-trac] #885(undetermined:open): Segfault when decoding 4xm zzufed file (was: Segfault in ffmpeg.c with 4xm zzufed file)

[FFmpeg]

#885: Segfault when decoding 4xm zzufed file
-------------------------------------+-------------------------------------
             Reporter:               |                    Owner:
  oanastratulat                      |                   Status:  open
                 Type:  defect       |                Component:
             Priority:  important    |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:  4xm pcm      |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * status:  new => open
 * reproduced:  0 => 1
 * component:  FFmpeg => undetermined
 * priority:  normal => important
 * keywords:   => 4xm pcm


Comment:

 {{{
 (gdb) r -i crash4XM -f null -
 Starting program: ffmpeg_g -i crash4XM -f null -
 [Thread debugging using libthread_db enabled]
 ffmpeg version N-36492-g7f83db3, Copyright (c) 2000-2012 the FFmpeg
 developers
   built on Jan  5 2012 06:49:27 with gcc 4.5.3
   configuration: --cc=/usr/local/gcc-4.5.3/bin/gcc
   libavutil      51. 34.100 / 51. 34.100
   libavcodec     53. 53.100 / 53. 53.100
   libavformat    53. 29.100 / 53. 29.100
   libavdevice    53.  4.100 / 53.  4.100
   libavfilter     2. 57.101 /  2. 57.101
   libswscale      2.  1.100 /  2.  1.100
   libswresample   0.  5.100 /  0.  5.100
 [4xm @ 0x13c97a0] Estimating duration from bitrate, this may be inaccurate
 Input #0, 4xm, from 'crash4XM':
   Duration: 00:00:13.17, start: 0.000000, bitrate: 705 kb/s
     Stream #0:0: Audio: pcm_s16le, 22050 Hz, 2 channels, s16, 705 kb/s
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf53.29.100
     Stream #0:0: Audio: pcm_s16le, 22050 Hz, 2 channels, s16, 705 kb/s
 Stream mapping:
   Stream #0:0 -> #0:0 (pcm_s16le -> pcm_s16le)
 Press [q] to stop, [?] for help

 Program received signal SIGSEGV, Segmentation fault.
 0x00007ffff68b9a37 in memcpy () from /lib64/libc.so.6
 (gdb) bt
 #0  0x00007ffff68b9a37 in memcpy () from /lib64/libc.so.6
 #1  0x00000000007d926d in pcm_encode_frame (avctx=<value optimized out>,
     frame=0x7fff91673040 "pfrm\340K", buf_size=<value optimized out>,
 data=0x7fffd56a1040)
     at libavcodec/pcm.c:171
 #2  0x0000000000873217 in avcodec_encode_audio (avctx=0x13d0a40,
 buf=<value optimized out>,
     buf_size=<value optimized out>, samples=<value optimized out>) at
 libavcodec/utils.c:866
 #3  0x000000000040b48c in do_audio_out (ist=0x13c9f40, ost=0x13d0f50,
 s=0x13d0280,
     decoded_frame=<value optimized out>) at ffmpeg.c:1230
 #4  transcode_audio (ist=0x13c9f40, ost=0x13d0f50, s=0x13d0280,
 decoded_frame=<value optimized out>)
     at ffmpeg.c:2008
 #5  output_packet (ist=0x13c9f40, ost=0x13d0f50, s=0x13d0280,
 decoded_frame=<value optimized out>)
     at ffmpeg.c:2228
 #6  0x000000000040e0b4 in transcode (output_files=0x13d1220,
 nb_output_files=1, input_files=0x13c9d10,
     nb_input_files=0) at ffmpeg.c:3003
 #7  0x0000000000412469 in main (argc=<value optimized out>, argv=<value
 optimized out>) at ffmpeg.c:5086
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/885#comment:1>
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