[FFmpeg-trac] #2922(undetermined:new): g2m4: crash

FFmpeg trac at avcodec.org
Sat Aug 31 15:00:21 CEST 2013


#2922: g2m4: crash
-------------------------------------+-------------------------------------
               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
-------------------------------------+-------------------------------------
 doesn't crash under valgrind

 http://www.datafilehost.com/d/1836a76d

 {{{
 (gdb) r -threads 1 -i ./g2m4_fuzz.wmv -an -f null -
 Starting program: /media/sdb1/ffmpeg-HEAD-c042684/ffmpeg_g -threads 1 -i
 ./g2m4_fuzz.wmv -an -f null -
 [Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
 ffmpeg version 2.0-c042684 Copyright (c) 2000-2013 the FFmpeg developers
   built on Aug 30 2013 20:55:53 with gcc 4.7 (Debian 4.7.2-5)
   configuration: --disable-yasm --disable-ffprobe --disable-ffserver
 --enable-gpl
   libavutil      52. 42.100 / 52. 42.100
   libavcodec     55. 29.100 / 55. 29.100
   libavformat    55. 15.100 / 55. 15.100
   libavdevice    55.  3.100 / 55.  3.100
   libavfilter     3. 82.102 /  3. 82.102
   libswscale      2.  5.100 /  2.  5.100
   libswresample   0. 17.103 /  0. 17.103
   libpostproc    52.  3.100 / 52.  3.100
 [asf @ 0x9104e40] Estimating duration from bitrate, this may be inaccurate
 Guessed Channel Layout for  Input Stream #0.0 : mono
 Input #0, asf, from './g2m4_fuzz.wmv':
   Metadata:
     DeviceConformanceTemplate: L2
     WMFSDKNeeded    : 0.0.0.0000
     WMFSDKVersion   : 9.00.00.4509
     IsVBR           : 1
   Duration: 00:00:02.96, start: 0.000000, bitrate: 27694 kb/s
     Stream #0:0(eng): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, mono,
 fltp, 48 kb/s
     Stream #0:1(eng): Data: none, 2 kb/s
     Stream #0:2(eng): Video: g2m (G2M4 / 0x344D3247), rgb24, 1280x1024,
 27648 kb/s, 9.92 tbr, 1k tbn, 1k tbc
 [New Thread 0xb7dd1b70 (LWP 31862)]
 [New Thread 0xb75d1b70 (LWP 31863)]
 [New Thread 0xb6dd1b70 (LWP 31864)]
 [New Thread 0xb65d1b70 (LWP 31865)]
 [New Thread 0xb5dd1b70 (LWP 31866)]
 [New Thread 0xb55d1b70 (LWP 31867)]
 [New Thread 0xb4dd1b70 (LWP 31868)]
 [New Thread 0xb45d1b70 (LWP 31869)]
 [New Thread 0xb3dd1b70 (LWP 31870)]
 Output #0, null, to 'pipe:':
   Metadata:
     DeviceConformanceTemplate: L2
     WMFSDKNeeded    : 0.0.0.0000
     WMFSDKVersion   : 9.00.00.4509
     IsVBR           : 1
     encoder         : Lavf55.15.100
     Stream #0:0(eng): Video: rawvideo (RGB[24] / 0x18424752), rgb24,
 1280x1024, q=2-31, 200 kb/s, 90k tbn, 9.92 tbc
 Stream mapping:
   Stream #0:2 -> #0:0 (g2m -> rawvideo)
 Press [q] to stop, [?] for help
 [g2m @ 0x9106500] Error decoding tile 5,0
 [g2m @ 0x9106500] Error decoding tile 6,7
 [g2m @ 0x9106500] Error decoding tile 0,7
 [g2m @ 0x9106500] Error decoding tile 6,1
 [g2m @ 0x9106500] Error decoding tile 1,3
 [g2m @ 0x9106500] Error decoding tile 2,3
 [g2m @ 0x9106500] Invalid chunk size -65537 type FF
 [null @ 0x91373a0] Encoder did not produce proper pts, making some up.
 [g2m @ 0x9106500] Error decoding tile 5,0
 [g2m @ 0x9106500] Error decoding tile 1,1
 [g2m @ 0x9106500] Error decoding tile 2,1
 [g2m @ 0x9106500] Invalid chunk size 527647 type C9
 [g2m @ 0x9106500] Error decoding tile 7,0
 [g2m @ 0x9106500] Error decoding tile 4,0
 [g2m @ 0x9106500] Error decoding tile 2,0
 [g2m @ 0x9106500] Error decoding tile 0,0
 [g2m @ 0x9106500] Error decoding tile 1,0
     Last message repeated 1 times
 [g2m @ 0x9106500] Error decoding tile 0,0
 [g2m @ 0x9106500] Error decoding tile 6,7
     Last message repeated 1 times
 [g2m @ 0x9106500] Error decoding tile 3,0
 [g2m @ 0x9106500] Error decoding tile 6,0
 [g2m @ 0x9106500] Error decoding tile 6,7
 [g2m @ 0x9106500] Error decoding tile 0,7
 [g2m @ 0x9106500] Error decoding tile 4,0
 [g2m @ 0x9106500] Error decoding tile 5,0
 [g2m @ 0x9106500] Error decoding tile 1,0
 [g2m @ 0x9106500] Error decoding tile 2,0
 [g2m @ 0x9106500] Error decoding tile 1,1
 [g2m @ 0x9106500] Error decoding tile 2,1
 [g2m @ 0x9106500] Error decoding tile 4,1
 [g2m @ 0x9106500] Error decoding tile 5,1
 [g2m @ 0x9106500] Error decoding tile 6,1

 Program received signal SIGSEGV, Segmentation fault.
 0xb7ea76a8 in _int_malloc (av=<optimized out>, bytes=<optimized out>)
     at malloc.c:4636
 4636    malloc.c: No such file or directory.
 (gdb) bt
 #0  0xb7ea76a8 in _int_malloc (av=<optimized out>, bytes=<optimized out>)
     at malloc.c:4636
 #1  0xb7ea94bc in *__GI___libc_malloc (bytes=32768) at malloc.c:3660
 #2  0x416100b0 in ?? () from /lib/i386-linux-gnu/libz.so.1
 #3  0x4160a3d3 in ?? () from /lib/i386-linux-gnu/libz.so.1
 #4  0x4160ba9d in inflate () from /lib/i386-linux-gnu/libz.so.1
 #5  0x416102e0 in uncompress () from /lib/i386-linux-gnu/libz.so.1
 #6  0x0834cede in kempf_decode_tile (c=c at entry=0x910b700,
     tile_x=<optimized out>, tile_y=<optimized out>,
     src=0x9152eb8
 "x\234\355\324?N\205@\020\006\360\335\306\342U\373\305@\362\266{\336\300x\002\v\016`CAG\302!\274\006%\345jB\301)\235Y\020\345\217\by\232\030\363M\001Ă’\374\030f`\315s7\215\200\215\060\a\342\020|\352vÇż\207\203\237\003\245\061\266\230\254T\271\063v\t\277Ü­\307\005r8a0\332ld&\252^Uy\326\301o\301\227s\275\200\273}pH\026\360\353\303\030\270\305\307Ĺ˝\346\026]i}\345,\254\227\244\224\027\210T\201Ôˇ}4p\030`|\327\343\063\320\304s\255\347\233,
 $\245G>$}\217!\217\220\065Y\031+ކ\353\371\360l\"\036J_E\030\n+\025<\004N\321f;a\221\233Z"...,
     src at entry=0x9152e90 "`", src_size=src_size at entry=1363)
     at libavcodec/g2meet.c:395
 #7  0x0834dff5 in g2m_decode_frame (avctx=0x9106500, data=0x9138d20,
     got_picture_ptr=0xbffff4e4, avpkt=0xbffff288) at
 libavcodec/g2meet.c:765
 #8  0x0867704e in avcodec_decode_video2 (avctx=0x9106500,
     picture=picture at entry=0x9138d20,
     got_picture_ptr=got_picture_ptr at entry=0xbffff4e4,
 ---Type <return> to continue, or q <return> to quit---
     avpkt=avpkt at entry=0xbffff730) at libavcodec/utils.c:1983
 #9  0x080b366d in decode_video (ist=ist at entry=0x9107660,
     pkt=pkt at entry=0xbffff730, got_output=got_output at entry=0xbffff4e4)
     at ffmpeg.c:1668
 #10 0x080b758a in output_packet (pkt=0xbffff6c8, ist=0x9107660)
     at ffmpeg.c:1866
 #11 process_input (file_index=3) at ffmpeg.c:3085
 #12 0x080a2e33 in transcode_step () at ffmpeg.c:3181
 #13 transcode () at ffmpeg.c:3233
 #14 main (argc=<optimized out>, argv=<optimized out>) at ffmpeg.c:3411
 (gdb)
 }}}

 {{{
 (gdb) r -i g2m4_fuzz.wmv -an -f null -
 Starting program: /media/sdb1/ffmpeg-HEAD-c042684/ffmpeg_g -i
 g2m4_fuzz.wmv -an -f null -
 [Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
 ffmpeg version 2.0-c042684 Copyright (c) 2000-2013 the FFmpeg developers
   built on Aug 30 2013 20:55:53 with gcc 4.7 (Debian 4.7.2-5)
   configuration: --disable-yasm --disable-ffprobe --disable-ffserver
 --enable-gpl
   libavutil      52. 42.100 / 52. 42.100
   libavcodec     55. 29.100 / 55. 29.100
   libavformat    55. 15.100 / 55. 15.100
   libavdevice    55.  3.100 / 55.  3.100
   libavfilter     3. 82.102 /  3. 82.102
   libswscale      2.  5.100 /  2.  5.100
   libswresample   0. 17.103 /  0. 17.103
   libpostproc    52.  3.100 / 52.  3.100
 [asf @ 0x9104d60] Estimating duration from bitrate, this may be inaccurate
 Guessed Channel Layout for  Input Stream #0.0 : mono
 Input #0, asf, from 'g2m4_fuzz.wmv':
   Metadata:
     DeviceConformanceTemplate: L2
     WMFSDKNeeded    : 0.0.0.0000
     WMFSDKVersion   : 9.00.00.4509
     IsVBR           : 1
   Duration: 00:00:02.96, start: 0.000000, bitrate: 27694 kb/s
     Stream #0:0(eng): Audio: wmav2 (a[1][0][0] / 0x0161), 44100 Hz, mono,
 fltp, 48 kb/s
     Stream #0:1(eng): Data: none, 2 kb/s
     Stream #0:2(eng): Video: g2m (G2M4 / 0x344D3247), rgb24, 1280x1024,
 27648 kb/s, 9.92 tbr, 1k tbn, 1k tbc
 [New Thread 0xb7dd1b70 (LWP 30055)]
 [New Thread 0xb75d1b70 (LWP 30056)]
 [New Thread 0xb6dd1b70 (LWP 30057)]
 [New Thread 0xb65d1b70 (LWP 30058)]
 [New Thread 0xb5dd1b70 (LWP 30059)]
 [New Thread 0xb55d1b70 (LWP 30060)]
 [New Thread 0xb4dd1b70 (LWP 30061)]
 [New Thread 0xb45d1b70 (LWP 30062)]
 [New Thread 0xb3dd1b70 (LWP 30063)]
 Output #0, null, to 'pipe:':
   Metadata:
     DeviceConformanceTemplate: L2
     WMFSDKNeeded    : 0.0.0.0000
     WMFSDKVersion   : 9.00.00.4509
     IsVBR           : 1
     encoder         : Lavf55.15.100
     Stream #0:0(eng): Video: rawvideo (RGB[24] / 0x18424752), rgb24,
 1280x1024, q=2-31, 200 kb/s, 90k tbn, 9.92 tbc
 Stream mapping:
   Stream #0:2 -> #0:0 (g2m -> rawvideo)
 Press [q] to stop, [?] for help
 [g2m @ 0x9106460] Error decoding tile 5,0
 [g2m @ 0x9106460] Error decoding tile 6,7
 [g2m @ 0x9106460] Error decoding tile 0,7
 [g2m @ 0x9106460] Error decoding tile 6,1
 [g2m @ 0x9106460] Error decoding tile 1,3
 [g2m @ 0x9106460] Error decoding tile 2,3
 [g2m @ 0x9106460] Invalid chunk size -65537 type FF
 [null @ 0x910a740] Encoder did not produce proper pts, making some up.
 [g2m @ 0x9106460] Error decoding tile 5,0
 [g2m @ 0x9106460] Error decoding tile 1,1
 [g2m @ 0x9106460] Error decoding tile 2,1
 [g2m @ 0x9106460] Invalid chunk size 527647 type C9
 [g2m @ 0x9106460] Error decoding tile 7,0
 [g2m @ 0x9106460] Error decoding tile 4,0
 [g2m @ 0x9106460] Error decoding tile 2,0
 [g2m @ 0x9106460] Error decoding tile 0,0
 [g2m @ 0x9106460] Error decoding tile 1,0
     Last message repeated 1 times
 [g2m @ 0x9106460] Error decoding tile 0,0
 [g2m @ 0x9106460] Error decoding tile 6,7
     Last message repeated 1 times
 [g2m @ 0x9106460] Error decoding tile 3,0
 [g2m @ 0x9106460] Error decoding tile 6,0
 [g2m @ 0x9106460] Error decoding tile 6,7
 [g2m @ 0x9106460] Error decoding tile 0,7
 [g2m @ 0x9106460] Error decoding tile 4,0
 [g2m @ 0x9106460] Error decoding tile 5,0
 [g2m @ 0x9106460] Error decoding tile 1,0
 [g2m @ 0x9106460] Error decoding tile 2,0
 [g2m @ 0x9106460] Error decoding tile 1,1
 [g2m @ 0x9106460] Error decoding tile 2,1
 [g2m @ 0x9106460] Error decoding tile 4,1
 [g2m @ 0x9106460] Error decoding tile 5,1
 [g2m @ 0x9106460] Error decoding tile 6,1
 *** glibc detected *** /media/sdb1/ffmpeg-HEAD-c042684/ffmpeg_g: corrupted
 double-linked list: 0x090f8f38 ***
 ======= Backtrace: =========
 /lib/i386-linux-gnu/libc.so.6(+0x70a8a)[0xb7ea4a8a]
 /lib/i386-linux-gnu/libc.so.6(+0x73c45)[0xb7ea7c45]
 /lib/i386-linux-gnu/libc.so.6(__libc_malloc+0x5c)[0xb7ea94bc]
 /lib/i386-linux-gnu/libz.so.1[0x416100b0]
 [0x0]
 ======= Memory map: ========
 08048000-08ae3000 r-xp 00000000 08:11 7892       /media/sdb1/ffmpeg-
 HEAD-c042684/ffmpeg_g
 08ae3000-08b02000 rw-p 00a9b000 08:11 7892       /media/sdb1/ffmpeg-
 HEAD-c042684/ffmpeg_g
 08b02000-091b9000 rw-p 00000000 00:00 0          [heap]
 41602000-41619000 r-xp 00000000 08:02 10056      /lib/i386-linux-
 gnu/libz.so.1.2.7
 41619000-4161a000 r--p 00016000 08:02 10056      /lib/i386-linux-
 gnu/libz.so.1.2.7
 4161a000-4161b000 rw-p 00017000 08:02 10056      /lib/i386-linux-
 gnu/libz.so.1.2.7
 41628000-41659000 r-xp 00000000 08:02 10014      /lib/i386-linux-
 gnu/libncursesw.so.5.9
 41659000-4165a000 r--p 00030000 08:02 10014      /lib/i386-linux-
 gnu/libncursesw.so.5.9
 4165a000-4165b000 rw-p 00031000 08:02 10014      /lib/i386-linux-
 gnu/libncursesw.so.5.9
 41673000-41676000 r-xp 00000000 08:02 24959      /usr/lib/i386-linux-gnu
 /libpulse-simple.so.0.0.3
 41676000-41677000 r--p 00002000 08:02 24959      /usr/lib/i386-linux-gnu
 /libpulse-simple.so.0.0.3
 41677000-41678000 rw-p 00003000 08:02 24959      /usr/lib/i386-linux-gnu
 /libpulse-simple.so.0.0.3
 4178e000-418c2000 r-xp 00000000 08:02 24566      /usr/lib/i386-linux-
 gnu/libX11.so.6.3.0
 418c2000-418c6000 rw-p 00133000 08:02 24566      /usr/lib/i386-linux-
 gnu/libX11.so.6.3.0
 418c8000-418e9000 r-xp 00000000 08:02 25047      /usr/lib/i386-linux-
 gnu/libxcb.so.1.1.0
 418e9000-418ea000 r--p 00020000 08:02 25047      /usr/lib/i386-linux-
 gnu/libxcb.so.1.1.0
 418ea000-418eb000 rw-p 00021000 08:02 25047      /usr/lib/i386-linux-
 gnu/libxcb.so.1.1.0
 418ed000-418ef000 r-xp 00000000 08:02 24568      /usr/lib/i386-linux-
 gnu/libXau.so.6.0.0
 418ef000-418f0000 rw-p 00001000 08:02 24568      /usr/lib/i386-linux-
 gnu/libXau.so.6.0.0
 418f2000-418f7000 r-xp 00000000 08:02 24574      /usr/lib/i386-linux-
 gnu/libXdmcp.so.6.0.0
 418f7000-418f8000 rw-p 00004000 08:02 24574      /usr/lib/i386-linux-
 gnu/libXdmcp.so.6.0.0
 41913000-41924000 r-xp 00000000 08:02 24575      /usr/lib/i386-linux-
 gnu/libXext.so.6.4.0
 41924000-41925000 rw-p 00010000 08:02 24575      /usr/lib/i386-linux-
 gnu/libXext.so.6.4.0
 41cd1000-41cd3000 r-xp 00000000 08:02 25013      /usr/lib/i386-linux-
 gnu/libts-0.0.so.0.1.1
 41cd3000-41cd4000 rw-p 00001000 08:02 25013      /usr/lib/i386-linux-
 gnu/libts-0.0.so.0.1.1
 41cd6000-41ce4000 r-xp 00000000 08:02 24578      /usr/lib/i386-linux-
 gnu/libXi.so.6.1.0
 41ce4000-41ce5000 rw-p 0000e000 08:02 24578      /usr/lib/i386-linux-
 gnu/libXi.so.6.1.0
 41f58000-41f6e000 r-xp 00000000 08:02 24654      /usr/lib/i386-linux-
 gnu/libdirect-1.2.so.9.0.1
 41f6e000-41f6f000 rw-p 00016000 08:02 24654      /usr/lib/i386-linux-
 gnu/libdirect-1.2.so.9.0.1
 41f94000-41f98000 r-xp 00000000 08:02 9978       /lib/i386-linux-
 gnu/libattr.so.1.1.0
 41f98000-41f99000 r--p 00003000 08:02 9978       /lib/i386-linux-
 gnu/libattr.so.1.1.0
 41f99000-41f9a000 rw-p 00004000 08:02 9978       /lib/i386-linux-
 gnu/libattr.so.1.1.0
 41f9c000-41fa0000 r-xp 00000000 08:02 9985       /lib/i386-linux-
 gnu/libcap.so.2.22
 41fa0000-41fa1000 rw-p 00003000 08:02 9985       /lib/i386-linux-
 gnu/libcap.so.2.22
 41fa3000-41fab000 r-xp 00000000 08:02 10054      /lib/i386-linux-
 gnu/libwrap.so.0.7.6
 41fab000-41fac000 r--p 00007000 08:02 10054      /lib/i386-linux-
 gnu/libwrap.so.0.7.6
 41fac000-41fad000 rw-p 00008000 08:02 10054      /lib/i386-linux-
 gnu/libwrap.so.0.7.6
 41faf000-41fb4000 r-xp 00000000 08:02 24589      /usr/lib/i386-linux-
 gnu/libXtst.so.6.1.0
 41fb4000-41fb5000 rw-p 00004000 08:02 24589      /usr/lib/i386-linux-
 gnu/libXtst.so.6.1.0
 4244e000-42457000 r-xp 00000000 08:02 24707      /usr/lib/i386-linux-
 gnu/libfusion-1.2.so.9.0.1
 42457000-42458000 rw-p 00008000 08:02 24707      /usr/lib/i386-linux-
 gnu/libfusion-1.2.so.9.0.1
 42489000-42491000 r-xp 00000000 08:02 10005      /lib/i386-linux-
 gnu/libjson.so.0.1.0
 42491000-42492000 r--p 00007000 08:02 10005      /lib/i386-linux-
 gnu/libjson.so.0.1.0
 42492000-42493000 rw-p 00008000 08:02 10005      /lib/i386-linux-
 gnu/libjson.so.0.1.0
 42495000-4249a000 r-xp 00000000 08:02 24603      /usr/lib/i386-linux-
 gnu/libasyncns.so.0.3.1
 4249a000-4249b000 rw-p 00004000 08:02 24603      /usr/lib/i386-linux-
 gnu/libasyncns.so.0.3.1
 424a1000-424a7000 r-xp 00000000 08:02 24920      /usr/lib/i386-linux-
 gnu/libogg.so.0.8.0
 424a7000-424a8000 rw-p 00005000 08:02 24920      /usr/lib/i386-linux-
 gnu/libogg.so.0.8.0
 424aa000-424d4000 r-xp 00000000 08:02 25032      /usr/lib/i386-linux-
 gnu/libvorbis.so.0.4.5
 424d4000-424d5000 r--p 00029000 08:02 25032      /usr/lib/i386-linux-
 gnu/libvorbis.so.0.4.5
 424d5000-424d6000 rw-p 0002a000 08:02 25032      /usr/lib/i386-linux-
 gnu/libvorbis.so.0.4.5
 424d8000-42526000 r-xp 00000000 08:02 24551      /usr/lib/i386-linux-
 gnu/libFLAC.so.8.2.0
 42526000-42527000 r--p 0004d000 08:02 24551      /usr/lib/i386-linux-
 gnu/libFLAC.so.8.2.0
 42527000-42528000 rw-p 0004e000 08:02 24551      /usr/lib/i386-linux-
 gnu/libFLAC.so.8.2.0
 42530000-42534000 r-xp 00000000 08:02 10053      /lib/i386-linux-
 gnu/libuuid.so.1.3.0
 42534000-42535000 r--p 00003000 08:02 10053      /lib/i386-linux-
 gnu/libuuid.so.1.3.0
 42535000-42536000 rw-p 00004000 08:02 10053      /lib/i386-linux-
 gnu/libuuid.so.1.3.0
 4254b000-4263e000 r-xp 00000000 08:02 24600      /usr/lib/i386-linux-
 gnu/libasound.so.2.0.0
 4263e000-42642000 r--p 000f2000 08:02 24600      /usr/lib/i386-linux-
 gnu/libasound.so.2.0.0
 42642000-42643000 rw-p 000f6000 08:02 24600      /usr/lib/i386-linux-
 gnu/libasound.so.2.0.0
 4266f000-426b8000 r-xp 00000000 08:02 9989       /lib/i386-linux-
 gnu/libdbus-1.so.3.7.2
 426b8000-426b9000 ---p 00049000 08:02 9989       /lib/i386-linux-
 gnu/libdbus-1.so.3.7.2
 426b9000-426ba000 r--p 00049000 08:02 9989       /lib/i386-linux-
 gnu/libdbus-1.so.3.7.2
 Program received signal SIGABRT, Aborted.
 0xb7e5e667 in *__GI_raise (sig=6) at
 ../nptl/sysdeps/unix/sysv/linux/raise.c:64
 64      ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or
 directory.
 (gdb) bt
 #0  0xb7e5e667 in *__GI_raise (sig=6)
     at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
 #1  0xb7e61a52 in *__GI_abort () at abort.c:92
 #2  0xb7e9a98d in __libc_message (do_abort=2,
     fmt=0xb7f61330 "*** glibc detected *** %s: %s: 0x%s ***\n")
     at ../sysdeps/unix/sysv/linux/libc_fatal.c:189
 #3  0xb7ea4a8a in malloc_printerr (action=<optimized out>,
     str=0x6 <Address 0x6 out of bounds>, ptr=0x90f8f38) at malloc.c:6283
 #4  0xb7ea7c45 in _int_malloc (av=<optimized out>, bytes=<optimized out>)
     at malloc.c:4636
 #5  0xb7ea94bc in *__GI___libc_malloc (bytes=32768) at malloc.c:3660
 #6  0x416100b0 in ?? () from /lib/i386-linux-gnu/libz.so.1
 #7  0x4160a3d3 in ?? () from /lib/i386-linux-gnu/libz.so.1
 #8  0x4160ba9d in inflate () from /lib/i386-linux-gnu/libz.so.1
 #9  0x416102e0 in uncompress () from /lib/i386-linux-gnu/libz.so.1
 #10 0x0834cede in kempf_decode_tile (c=c at entry=0x91370a0,
     tile_x=<optimized out>, tile_y=<optimized out>,
     src=0x91527f8
 "x\234\355\324?N\205@\020\006\360\335\306\342U\373\305@\362\266{\336\300x\002\v\016`CAG\302!\274\006%\345jB\301)\235Y\020\345\217\by\232\030\363M\001Ă’\374\030f`\315s7\215\200\215\060\a\342\020|\352vÇż\207\203\237\003\245\061\266\230\254T\271\063v\t\277Ü­\307\005r8a0\332ld&\252^Uy\326\301o\301\227s\275\200\273}pH\026\360\353\303\030\270\305\307Ĺ˝\346\026]i}\345,\254\227\244\224\027\210T\201Ôˇ}4p\030`|\327\343\063\320\304s\255\347\233,
 $\245G>$}\217!\217\220\---Type <return> to continue, or q <return> to
 quit---
 065Y\031+ކ\353\371\360l\"\036J_E\030\n+\025<\004N\321f;a\221\233Z"...,
     src at entry=0x91527d0 "`", src_size=src_size at entry=1363)
     at libavcodec/g2meet.c:395
 #11 0x0834dff5 in g2m_decode_frame (avctx=0x9106460, data=0x91077e0,
     got_picture_ptr=0xbffff504, avpkt=0xbffff2a8) at
 libavcodec/g2meet.c:765
 #12 0x0867704e in avcodec_decode_video2 (avctx=0x9106460,
     picture=picture at entry=0x91077e0,
     got_picture_ptr=got_picture_ptr at entry=0xbffff504,
     avpkt=avpkt at entry=0xbffff750) at libavcodec/utils.c:1983
 #13 0x080b366d in decode_video (ist=ist at entry=0x910d000,
     pkt=pkt at entry=0xbffff750, got_output=got_output at entry=0xbffff504)
     at ffmpeg.c:1668
 #14 0x080b758a in output_packet (pkt=0xbffff6e8, ist=0x910d000)
     at ffmpeg.c:1866
 #15 process_input (file_index=3) at ffmpeg.c:3085
 #16 0x080a2e33 in transcode_step () at ffmpeg.c:3181
 #17 transcode () at ffmpeg.c:3233
 #18 main (argc=<optimized out>, argv=<optimized out>) at ffmpeg.c:3411
 (gdb)
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2922>
FFmpeg <http://ffmpeg.org>
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