[Bug 727779] New: matroskademux: crash while seeking

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=727779
  GStreamer | gst-plugins-good | 1.x

           Summary: matroskademux: crash while seeking
    Classification: Platform
           Product: GStreamer
           Version: 1.x
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: critical
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: j at bitron.ch
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Since the upgrade from 1.2.2 to 1.2.3, totem crashes frequently when seeking in
H264 mkv files. Sometimes but not always, one of the following messages appears
right before the segmentation fault:

CRITICAL **: gst_video_codec_frame_unref: assertion
'frame->ref_count > 0' failed

CRITICAL **: gst_video_codec_frame_ref: assertion
'frame != NULL' failed

Based on my limited testing, it appears that this regression was introduced
with the fix for bug 682276, i.e., reverting commit 525539aa solves the issue
here.

I don't have a proper backtrace from my system at hand, however, there is one
in a Debian bug report about this issue:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=739579

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