segfault while reading rtsp stream

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Format: 1.7
Date: Sat, 30 Sep 2006 22:07:46 -0400
Source: vlc
Binary: wxvlc vlc-plugin-sdl vlc-plugin-ggi vlc-plugin-alsa vlc-plugin-glide vlc
-plugin-esd mozilla-plugin-vlc vlc libvlc0 vlc-plugin-arts vlc-nox vlc-plugin-sv
galib libvlc0-dev
Architecture: source
Version: 0.8.6-svn20060918.debian-1ubuntu3
Distribution: edgy
Urgency: low
Maintainer: MOTU Media Team <email address hidden>
Changed-By: Daniel T Chen <email address hidden>
Description:
 libvlc0 - multimedia player and streamer library
 libvlc0-dev - development files for VLC
 mozilla-plugin-vlc - multimedia plugin for web browsers based on VLC
 vlc - multimedia player and streamer
 vlc-nox - multimedia player and streamer (without X support)
 vlc-plugin-alsa - dummy transitional package
 vlc-plugin-arts - aRts audio output plugin for VLC
 vlc-plugin-esd - Esound audio output plugin for VLC
 vlc-plugin-ggi - GGI video output plugin for VLC
 vlc-plugin-glide - Glide video output plugin for VLC
 vlc-plugin-sdl - SDL video and audio output plugin for VLC
 vlc-plugin-svgalib - SVGAlib video output plugin for VLC
 wxvlc - dummy transitional package
Changes:
 vlc (0.8.6-svn20060918.debian-1ubuntu3) edgy; urgency=low
 .
   * Backport fixes from Debian's 0925 snapshot, fixing failure to
     read rtsp streams from Freebox (Closes Ubuntu: #62856, #63135).
Files:
 84b51c286555a2d3936599b36dba1a32 1989 graphics optional vlc_0.8.6-svn20060918.d
ebian-1ubuntu3.dsc
 66864266127e72deb5186bdd384fac9f 182289 graphics optional vlc_0.8.6-svn20060918
.debian-1ubuntu3.diff.gz

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I'm not sure I understood why #63312 and #63135 were marked as a duplicate of this bug. In the segfault case it was just a rare condition that happened once (I don't even know if this is reproducable), in the other cases that's an impossibility to read the stream.
To me, that's quite different, unless the bug in #63135 was introduced to fix the segfault.

So, unless the segfault problem is evocated in the upstream changelog, I think #63312 should be marked a duplicate of #63135 instead, this bug left open, and #63135 marked as solved.

regards,

Benoit

Nothing about a segfault in the Debian package changelog (it's a SVN snapshot so no upstream changelog I think).
I'm going to remove the duplicates on this bug, and make #63312 duplicate of #63135. #63135 to fix released and this one (#62856) just confirmed.

It seems to crash in mpeg2_idct_init.
That would make this a mpeg2 bug, and most likely one that might depend on the type of CPU optimizations that are enabled. You could test if --disable-sse --disable-mmx on VLC might fix the crash.

I couldn't reproduce the bug, so feel free to either forward it upstream or close it. (I opened it since I thought a backtrace may be useful for a vlc dev)

Closing upon request of submitter.