[Bug 741355] playbin: deadlock

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=741355
  GStreamer | gst-plugins-base | git

--- Comment #6 from Christoph Reiter (lazka) <reiter.christoph at gmail.com> 2014-12-10 22:01:35 UTC ---
Created an attachment (id=292487)
 --> (https://bugzilla.gnome.org/attachment.cgi?id=292487)
segfault stacktrace

I failed to bisect, at some point in the history (between 1.4 and trunk) the
deadlock just seems to get rarer and just happen sometimes, confusing me and
bisect. That's my guess at least, since three bisects got me to three different
commits.

I got a few crashes (see attachment) while at it.

And occasionally one of the three:

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GStreamer-WARNING **: loop detected in the graph of bin 'decodebin3376'!!

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Attempt to unlock mutex that was not locked

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(quodlibet:6374): GStreamer-CRITICAL **: Failed to deactivate pad
oggdemux3084:sink, very bad

(quodlibet:6374): GStreamer-CRITICAL **: 
Trying to dispose element typefind, but it is in READY instead of the NULL
state.
You need to explicitly set elements to the NULL state before
dropping the final reference, to allow them to clean up.
This problem may also be caused by a refcounting bug in the
application or some element.

(quodlibet:6374): GStreamer-CRITICAL **: 
Trying to dispose element decodebin3085, but it is in READY instead of the NULL
state.
You need to explicitly set elements to the NULL state before
dropping the final reference, to allow them to clean up.
This problem may also be caused by a refcounting bug in the
application or some element.

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