[Bug 692424] New: Fix error source for a SIGSEGV crash around positioning in a track

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=692424
  GStreamer | gst-plugins-base | 0.10.36

           Summary: Fix error source for a SIGSEGV crash around
                    positioning in a track
    Classification: Platform
           Product: GStreamer
           Version: 0.10.36
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: Markus.Elfring at web.de
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


I stumble on an open issue during listening to Jamendo music with Amarok
2.6.0-175.2 in a KDE 4.9.5 session.
See also the bug report "Fix error source for a SIGSEGV crash after position
selection in a track".
https://bugs.kde.org/show_bug.cgi?id=313688

I have found a little bit more information.

elfring at Sonne:~> gdb amarok
GNU gdb (GDB) SUSE (7.4.50.20120603-2.1.2)
...
(gdb) set args --nofork
(gdb) run
...
Program received signal SIGSEGV, Segmentation fault.
0x00007fff9e14058e in gst_ogg_pad_src_query (pad=<optimized out>,
query=0x22fea40 [GstQuery]) at gstoggdemux.c:336
336             } else if (ogg->current_chain->streams->len) {


Can a null pointer access still happen in the current source file?
http://cgit.freedesktop.org/gstreamer/gst-plugins-base/tree/ext/ogg/gstoggdemux.c?id=5f59b4f7eee9d07531e2784b9ebb21ab325b6162#n323

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