Bug#432245: libvorbis0a: segfault in vorbis_synthesis_blockin()

[Michael Bonhomme]

Package: libvorbis0a
Version: 1.1.2.dfsg-2
Severity: important

When playing vorbis files, sometimes the player (amarok, mplayer)
crashes.
Here is the gdb output of oggdec:

[spike at bebop ~]$ gdb --args oggdec test.ogg
GNU gdb 6.6-debian
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you
are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for
details.
This GDB was configured as "i486-linux-gnu"...
(no debugging symbols found)
Using host libthread_db library "/lib/i686/cmov/libthread_db.so.1".
(gdb) run
Starting program: /usr/bin/oggdec test.ogg
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
OggDec 1.0.1
Decoding "test.ogg" to "test.wav"
        [ 65.5%]
Program received signal SIGSEGV, Segmentation fault.
0xb7f06b59 in vorbis_synthesis_blockin () from /usr/lib/libvorbis.so.0
(gdb) bt
#0  0xb7f06b59 in vorbis_synthesis_blockin () from
/usr/lib/libvorbis.so.0
#1  0xb7f29419 in ?? () from /usr/lib/libvorbisfile.so.3
#2  0xbf9c1d50 in ?? ()
#3  0xbf9c1db8 in ?? ()
#4  0x00000000 in ?? ()
(gdb) run
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /usr/bin/oggdec test.ogg
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
OggDec 1.0.1
Decoding "test.ogg" to "test.wav"
        [ 52.5%]
Program received signal SIGSEGV, Segmentation fault.
0xb7ed1b59 in vorbis_synthesis_blockin () from /usr/lib/libvorbis.so.0
(gdb) run
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /usr/bin/oggdec test.ogg
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
OggDec 1.0.1
Decoding "test.ogg" to "test.wav"
        [ 95.5%]
Program received signal SIGSEGV, Segmentation fault.
0xb7f25b59 in vorbis_synthesis_blockin () from /usr/lib/libvorbis.so.0
(gdb)

As you can see the program crashes randomly while decoding vorbis file.
I tried to rebuild oggdec and libvorbis without the option dh_strip to
get debugging symbols but I was unsuccessful.
I can provide any additional information or rebuild libs and binary with
debug informations if someone tells me howto to do so.

Michael.


-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.21.3-spk (PREEMPT)
Locale: LANG=fr_FR at euro, LC_CTYPE=fr_FR at euro (charmap=ISO-8859-15)
Shell: /bin/sh linked to /bin/bash

Versions of packages libvorbis0a depends on:
ii  libc6                         2.5-11     GNU C Library: Shared libraries
ii  libogg0                       1.1.3-2    Ogg Bitstream Library

libvorbis0a recommends no packages.

-- no debconf information