[gstreamer-bugs] [Bug 582942] crash in libvorbis when parsing some ogg files

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: 0.10.x




------- Comment #15 from Alex Bennee  2009-05-20 06:31 UTC -------
Created an attachment (id=135003)
 --> (http://bugzilla.gnome.org/attachment.cgi?id=135003&action=view)
Current debugging patch

Throwing in some fprintf's I see this:

Starting program:
/home/alex/src/gstreamer/gstreamer.git/tools/.libs/lt-gst-launch-0.10 filesrc
location=/home/alex/broken.ogg \! decodebin2 \! audioconvert \! audioresample
\! autoaudiosink
[Thread debugging using libthread_db enabled]
[New Thread 0x7f811bad76f0 (LWP 24880)]
Setting pipeline to PAUSED ...
[New Thread 0x42604950 (LWP 24882)]
Pipeline is PREROLLING ...
vorbis_dec_change_state: 0x10dce20, 0xa
NULL to READY
  default case 2: 0xa
vorbis_dec_change_state: 0x10dce20, 0x13
READY to PAUSED
  default case 2: 0x13
vorbis_dec_chain: vd=0x10dce20
vorbis_dec_chain: vd=0x10dce20
vorbis_dec_chain: vd=0x10dce20
vorbis_dec_chain: vd=0x10dce20

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x42604950 (LWP 24882)]
vorbis_synthesis (vb=0x10dd000, op=0x42603880) at synthesis.c:30
30        codec_setup_info     *ci=vi->codec_setup;
(gdb) bt
#0  vorbis_synthesis (vb=0x10dd000, op=0x42603880) at synthesis.c:30
#1  0x00007f8116c45009 in vorbis_handle_data_packet (vd=0x10dce20,
packet=0x42603880) at vorbisdec.c:979
#2  0x00007f8116c46c0f in vorbis_dec_decode_buffer (vd=0x10dce20,
buffer=0x1156840) at vorbisdec.c:1157

AFAICT the vorbis_dec_change_state never calls vorbis_info_init but as I'm not
familiar with the architecture of gstreamer I have no idea if this is a good or
bad thing.


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