[MPlayer-users] Segmentation fault in III_dequantize_sample_ms

[Björn Wingman]

I get a segmentation fault in III_dequantize_sample_ms when decoding
my Hikaru_no_Go_05_E-F.avi. It occurs at the same position in the
file (towards the end), and is reproducible.

I have uploaded the _entire_ file to mplayerhq.hu/MPlayer/incoming/ ,
was this a mistake? 

Seek here in the file if you can, to reproduce the error:

SEEK: i=43730 (max:43753) dpos=14598459 (wanted:14598598)   6%  2.6% 0 0 0%
SEEK: idx=43730  (a:43730 v:43753)  v.skip=11  a.skip=139/0.000  


gdb output follows:
-------------

bjowi at emil52:~/MPlayer-0.90pre8> gdb ./mplayer
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This GDB was configured as "i386-slackware-linux"...
(gdb) run /cdrom/Hikaru_no_Go_05_E-F.avi
Starting program: /home/bjowi/MPlayer-0.90pre8/./mplayer /cdrom/Hikaru_no_Go_05_E-F.avi

[New Thread 1024 (LWP 30817)]


MPlayer 0.90pre8-3.0.4 (C) 2000-2002 Arpad Gereoffy (see DOCS)

CPU: Advanced Micro Devices Athlon TB Thunderbird (Family: 6, Stepping: 2)
CPUflags:  MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 0 SSE2: 0
Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx

Reading /home/bjowi/.mplayer/codecs.conf: can't open '/home/bjowi/.mplayer/codecs.conf': No such file or directory
Reading /usr/local/etc/mplayer/codecs.conf: 38 audio & 106 video codecs
font: can't open file: /home/bjowi/.mplayer/font/font.desc
font: can't open file: /usr/local/share/mplayer/font/font.desc
Linux RTC init error in ioctl (rtc_pie_on): Permission denied
Using usleep() timing
Can't open input config file /home/bjowi/.mplayer/input.conf : No such file or directory
Can't open input config file /usr/local/etc/mplayer/input.conf : No such file or directory
Falling back on default (hardcoded) input config

Playing /cdrom/Hikaru_no_Go_05_E-F.avi
Detected AVI file format!
VIDEO:  [DIV3]  512x384  24bpp  23.98 fps  910.8 kbps (111.2 kbyte/s)
Clip info: 
 Software: Nandub v1.0rc2
 Name: Hikaru no Go - Episode 05
 Subject: Hikaru no Go - Episode 05
 Artist: #Elite-Fansubs at irc.enterthegame.com
 Copyright: www.elite-fansubs.com
 Comments: www.elite-fansubs.com
==========================================================================
Detected audio codec: [mp3] afm:mp3lib (mp3lib MPEG layer-2, layer-3)
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
AUDIO: 48000 Hz, 2 ch, sfmt: 0x10 (2 bps), ratio: 16000->192000 (128.0 kbit)
vo: X11 running at 1280x1024 with depth 24 and 32 bpp (":0.0" => local display)
[x11] Create window for WM detect ...
[x11] Unknown wm type...
==========================================================================
Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
Detected video codec: [ffdivx] vfm:ffmpeg (FFmpeg DivX ;-) (MS MPEG-4 v3))
==========================================================================
AO: [oss] 48000Hz 2ch Signed 16-bit (Little-Endian)
Start playing...
VDec: vo config request - 512 x 384 (preferred csp: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 512x384 => 512x384 Planar YV12 
Blocktype == 0 and window-switching == 1 not allowed.                        

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1024 (LWP 30817)]
III_dequantize_sample_ms (xr=0x823d980, scf=0xbfffdc3c, gr_info=0xbfffdb10, sfreq=1, 
    part2bits=30) at layer3.c:1284
1284          register short *val = h->table,a;
(gdb) bt
#0  III_dequantize_sample_ms (xr=0x823d980, scf=0xbfffdc3c, gr_info=0xbfffdb10, sfreq=1, 
    part2bits=30) at layer3.c:1284
#1  0x80a9aad in do_layer3 (fr=0x8240ba0, single=-1) at layer3.c:1655
#2  0x80a9fce in MP3_DecodeFrame (hova=0x8359568 "V", single=-1) at sr1.c:541
#3  0x807d342 in decode_audio (sh_audio=0x8339998, buf=0x8359568 "V", minlen=4608, 
    maxlen=66560) at dec_audio.c:148
#4  0x8052f5a in main (argc=2, argv=0xbfffeff4) at mplayer.c:1504
#5  0x402f32eb in __libc_start_main (main=0x804f020 <main>, argc=2, ubp_av=0xbfffeff4, 
    init=0x804ccc4 <_init>, fini=0x81a6950 <_fini>, rtld_fini=0x4000c130 <_dl_fini>, 
    stack_end=0xbfffefec) at ../sysdeps/generic/libc-start.c:129
(gdb) disass $eip-32 $eip+32
Dump of assembler code from 0x80a65f6 to 0x80a6636:
0x80a65f6 <III_dequantize_sample_ms+710>:       decl   0xf685bc75(%ebx)
0x80a65fc <III_dequantize_sample_ms+716>:
    je     0x80a6711 <III_dequantize_sample_ms+993>
0x80a6602 <III_dequantize_sample_ms+722>:       mov    0xffffffb8(%ebp),%ebx
0x80a6605 <III_dequantize_sample_ms+725>:       test   %ebx,%ebx
0x80a6607 <III_dequantize_sample_ms+727>:
    jle    0x80a6711 <III_dequantize_sample_ms+993>
0x80a660d <III_dequantize_sample_ms+733>:       lea    0x0(%esi),%esi
0x80a6610 <III_dequantize_sample_ms+736>:       mov    0x10(%ebp),%ecx
0x80a6613 <III_dequantize_sample_ms+739>:       mov    0x54(%ecx),%eax
0x80a6616 <III_dequantize_sample_ms+742>:       mov    0x81f3204(,%eax,8),%esi
0x80a661d <III_dequantize_sample_ms+749>:       movzwl (%esi),%eax
0x80a6620 <III_dequantize_sample_ms+752>:       add    $0x2,%esi
0x80a6623 <III_dequantize_sample_ms+755>:       test   %ax,%ax
0x80a6626 <III_dequantize_sample_ms+758>:       mov    %ax,0xffffff4e(%ebp)
0x80a662d <III_dequantize_sample_ms+765>:
    js     0x80a68f8 <III_dequantize_sample_ms+1480>
0x80a6633 <III_dequantize_sample_ms+771>:       movl   $0x0,0xffffff78(%ebp)
End of assembler dump.
(gdb)

------------


      /Björn Wingman