[gstreamer-bugs] [Bug 420106] totem crashed with SIGSEGV in resample_set_format()

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: 0.10.12




------- Comment #2 from Tim-Philipp Müller  2007-03-30 09:07 UTC -------
> http://librarian.launchpad.net/6995855/%3Cfdopen%3E has a similar backtrace
> coming from rhythmbox.

Very useful, thanks!


So, I wonder if the following race(?) could happen when a
GstBaseTransform-based element's state goes from PAUSED => READY:

 Streaming-Thread: in gst_pad_chain_unchecked():
                    - take STREAM_LOCK
                    - take OBJECT_LOCK
                    - check if pad is flushing
                    - release OBJECT_LOCK

 Shutdown-Thread:  in gst_pad_activate_push(FALSE):
                    - take OBJECT_LOCK    (in pre_activate)
                    - set pad to flushing (in pre_activate)
                    - release OBJECT_LOCK (in pre_activate)
                    - call GST_PAD_ACTIVATEPUSHFUNC(), which was
                      set by GstBaseTransform and which will call
                      GstBaseTransform::stop() where elements
                      might clear all their state.

 Streaming-Thread: still in gst_pad_chain_unchecked():
                    - call gst_pad_configure_sink() which will/might cause
                      GstBaseTransform::set_caps() to be called, which
                      elements will only expect after they have been
                      started again and their state has been initialised

Or am I missing anything here? If not, core bug, basetransform bug or element
bug?


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