mtv: deadlock and mem eater with forced format

[ami_stuff]

​http://samples.mplayerhq.hu/A-codecs/Nelly_Moser/h264_NellyMoser.mp4

(gdb) r -f mtv -i ./h264_NellyMoser.mp4 -f null -
The program being debugged has been started already.
Start it from the beginning? (y or n) y

Starting program: /media/sdb1/ffmpeg-HEAD-5dc6c0e/ffmpeg_g -f mtv -i ./h264_NellyMoser.mp4 -f null -
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
ffmpeg version 2.0-5dc6c0e Copyright (c) 2000-2013 the FFmpeg developers
  built on Sep 26 2013 20:30:42 with gcc 4.7 (Debian 4.7.2-5)
  configuration: --disable-yasm --enable-gpl --disable-ffserver --disable-ffprobe
  libavutil      52. 46.100 / 52. 46.100
  libavcodec     55. 33.100 / 55. 33.100
  libavformat    55. 18.102 / 55. 18.102
  libavdevice    55.  3.100 / 55.  3.100
  libavfilter     3. 87.100 /  3. 87.100
  libswscale      2.  5.100 /  2.  5.100
  libswresample   0. 17.103 /  0. 17.103
  libpostproc    52.  3.100 / 52.  3.100
Ignoring attempt to set invalid timebase 1/0 for st:0
[NULL @ 0x9124760] [IMGUTILS @ 0xbfffed94] Picture size 28116x13897 is invalid
[NULL @ 0x9124760] Ignoring invalid width/height values
[IMGUTILS @ 0xbfffed34] Picture size 0x0 is invalid

Program received signal SIGINT, Interrupt.
0xb7ea76b4 in _int_malloc (av=<optimized out>, bytes=<optimized out>)
    at malloc.c:4636
4636	malloc.c: No such file or directory.
(gdb) bt
#0  0xb7ea76b4 in _int_malloc (av=<optimized out>, bytes=<optimized out>)
    at malloc.c:4636
#1  0xb7ea8297 in _int_memalign (av=<optimized out>, alignment=32, bytes=12)
    at malloc.c:5492
#2  0xb7ea99b7 in *__GI___libc_memalign (alignment=32, bytes=12)
    at malloc.c:3880
#3  0xb7ea9bd9 in __posix_memalign (memptr=memptr@entry=0xbfffeddc, 
    alignment=511434760, alignment@entry=32, size=511368808, size@entry=12)
    at malloc.c:6315
#4  0x08875e78 in av_malloc (size=12) at libavutil/mem.c:93
#5  av_mallocz (size=size@entry=12) at libavutil/mem.c:243
#6  0x088689dd in av_buffer_create (flags=0, opaque=0x0, 
    free=0x88682d0 <av_buffer_default_free>, size=16, 
    data=0x29161208 "\340\017\026)") at libavutil/buffer.c:47
#7  av_buffer_realloc (pbuf=pbuf@entry=0xbfffee4c, size=size@entry=16)
    at libavutil/buffer.c:168
#8  0x0827c6d3 in packet_alloc (size=0, buf=0xbfffee4c)
    at libavcodec/avpacket.c:74
#9  av_new_packet (size=0, pkt=0xbffff058) at libavcodec/avpacket.c:86
#10 av_grow_packet (pkt=pkt@entry=0xbffff058, grow_by=grow_by@entry=0)
    at libavcodec/avpacket.c:116
#11 0x08237c54 in append_packet_chunked (s=s@entry=0x91243e0, 
    pkt=pkt@entry=0xbffff058, size=size@entry=0) at libavformat/utils.c:156
---Type <return> to continue, or q <return> to quit---
#12 0x08237db1 in av_get_packet (s=s@entry=0x91243e0, 
    pkt=pkt@entry=0xbffff058, size=size@entry=0) at libavformat/utils.c:184
#13 0x081cb924 in mtv_read_packet (s=0x911bd80, pkt=0xbffff058)
    at libavformat/mtv.c:186
#14 0x08238ad7 in ff_read_packet (s=s@entry=0x911bd80, 
    pkt=pkt@entry=0xbffff058) at libavformat/utils.c:652
#15 0x0823b419 in read_frame_internal (s=s@entry=0x911bd80, 
    pkt=pkt@entry=0xbffff238) at libavformat/utils.c:1310
#16 0x0823f055 in avformat_find_stream_info (ic=0x911bd80, options=0x911c320)
    at libavformat/utils.c:2795
#17 0x080a68e5 in open_input_file (o=o@entry=0xbffff51c, 
    filename=<optimized out>) at ffmpeg_opt.c:809
#18 0x080a5107 in open_files (inout=inout@entry=0x88eccdb "input", 
    open_file=open_file@entry=0x80a6500 <open_input_file>, 
    l=<error reading variable: Unhandled dwarf expression opcode 0xfa>, 
    l=<error reading variable: Unhandled dwarf expression opcode 0xfa>)
    at ffmpeg_opt.c:2494
#19 0x080ad319 in ffmpeg_parse_options (argc=argc@entry=8, 
    argv=argv@entry=0xbffff9a4) at ffmpeg_opt.c:2531
#20 0x080a280a in main (argc=8, argv=0xbffff9a4) at ffmpeg.c:3393
(gdb) 

[Carl Eugen Hoyos]

Patch sent.

[Carl Eugen Hoyos]

Should be fixed in b0b5012, thank you for the report!