[Bug 752300] New: After updating from GES 1.5.0 to 1.5.2 complex timelines makes whole app to hang

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=752300

            Bug ID: 752300
           Summary: After updating from GES 1.5.0 to 1.5.2 complex
                    timelines makes whole app to hang
    Classification: Platform
           Product: GStreamer
           Version: 1.5.2
                OS: Linux
            Status: NEW
          Severity: major
          Priority: Normal
         Component: gst-editing-services
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: polezhaiev at ukr.net
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Reproducible using ges-launch-1.0.
Will prepare .XGES soon.

#0  0x00007ffff62f6f7d in __lll_lock_wait () from /usr/lib64/libpthread.so.0
#1  0x00007ffff62f2d68 in _L_lock_975 () from /usr/lib64/libpthread.so.0
#2  0x00007ffff62f2d11 in pthread_mutex_lock () from /usr/lib64/libpthread.so.0
#3  0x00007ffff4e299e1 in g_mutex_lock () from /usr/lib64/libglib-2.0.so.0
#4  0x00007ffff7b8d4a2 in ges_asset_cache_lookup (extractable_type=8054176,
id=0x86b250 "crossfade") at ges-asset.c:449
#5  0x00007ffff7b8e0b1 in ges_asset_request (extractable_type=8054176,
id=0x7ffff7bb84b7 "crossfade", error=0x0)
    at ges-asset.c:731
#6  0x00007ffff7b5d2c3 in create_transition (timeline=0x7f62c0,
previous=0x7fffd51cee90, next=0x7fffd51cf470, 
    transition=0x0, layer=0x824f70, start=19203441359, duration=350000000) at
ges-timeline.c:819
#7  0x00007ffff7b5d971 in _create_transitions_on_layer (timeline=0x7f62c0,
layer=0x824f70, track=0x0, initiating_obj=0x0, 
    get_auto_transition=0x7ffff7b5d4dd
<_create_auto_transition_from_transitions>) at ges-timeline.c:994
#8  0x00007ffff7b62812 in layer_auto_transition_changed_cb (layer=0x824f70,
arg=0x84b620, timeline=0x7f62c0)
    at ges-timeline.c:2196
#9  0x00007ffff50dffd8 in g_closure_invoke () from
/usr/lib64/libgobject-2.0.so.0
#10 0x00007ffff50f20ad in signal_emit_unlocked_R () from
/usr/lib64/libgobject-2.0.so.0
#11 0x00007ffff50f9e32 in g_signal_emit_valist () from
/usr/lib64/libgobject-2.0.so.0
#12 0x00007ffff50fa0ef in g_signal_emit () from /usr/lib64/libgobject-2.0.so.0
#13 0x00007ffff50e4675 in g_object_dispatch_properties_changed () from
/usr/lib64/libgobject-2.0.so.0
#14 0x00007ffff50e6d59 in g_object_notify () from
/usr/lib64/libgobject-2.0.so.0
#15 0x00007ffff7b687b9 in ges_layer_set_auto_transition (layer=0x824f70,
auto_transition=1) at ges-layer.c:424
#16 0x00007ffff7b672b3 in ges_timeline_set_auto_transition (timeline=0x7f62c0,
auto_transition=1) at ges-timeline.c:3435
#17 0x00007ffff7b95b1f in _loading_done (self=0x7aa230) at
ges-base-xml-formatter.c:470
#18 0x00007ffff7b968b9 in new_asset_cb (source=0x816e00, res=0x81c0d0,
passet=0x8208c0) at ges-base-xml-formatter.c:765
#19 0x00007ffff53a20ab in g_task_return_now () from /usr/lib64/libgio-2.0.so.0
#20 0x00007ffff53a2726 in g_task_return () from /usr/lib64/libgio-2.0.so.0
#21 0x00007ffff7b8d44e in _gtask_return_true (task=0x81c0d0) at ges-asset.c:429
#22 0x00007ffff4de3158 in g_list_foreach () from /usr/lib64/libglib-2.0.so.0
#23 0x00007ffff7b8d7c4 in ges_asset_cache_set_loaded (extractable_type=8052848, 
    id=0x8203f0 "file:///data/assets_vps/tests/kimpton/kimpton_audio.mp3",
error=0x0) at ges-asset.c:514
#24 0x00007ffff7b8fb6b in discoverer_discovered_cb (discoverer=0x804130,
info=0x7fffe11fd580, err=0x0, user_data=0x0)
    at ges-uri-asset.c:365
#25 0x00007ffff45b4dac in ffi_call_unix64 () from /usr/lib64/libffi.so.6
#26 0x00007ffff45b46d5 in ffi_call () from /usr/lib64/libffi.so.6

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