Thread 2 (Thread 0x7fde3f558700 (LWP 31054)):
#0  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:132
#1  0x00007fde63e14080 in _L_lock_903 () from /lib/x86_64-linux-gnu/libpthread.so.0
#2  0x00007fde63e13f19 in __pthread_mutex_lock (mutex=0x3240390) at pthread_mutex_lock.c:82
#3  0x00007fde643772e1 in g_static_rec_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#4  0x00007fde54a45eaa in new_pad (element=0x1c546f0, pad=0x3fb8530, dynamic=<optimized out>) at gstdecodebin.c:1524
#5  0x00007fde64fcc354 in g_cclosure_marshal_VOID__OBJECTv () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#6  0x00007fde64fc8eca in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#7  0x00007fde64fe1741 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#8  0x00007fde64fe2242 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#9  0x00007fde652470c1 in gst_element_add_pad (element=0x1c546f0, pad=0x3fb8530) at gstelement.c:775
#10 0x00007fde54620665 in gst_wavparse_add_src_pad (wav=0x1c546f0, buf=<optimized out>) at gstwavparse.c:1805
#11 0x00007fde54620fdc in gst_wavparse_stream_data (wav=0x1c546f0) at gstwavparse.c:1924
#12 0x00007fde54625c5c in gst_wavparse_loop (pad=0x3fb80b0) at gstwavparse.c:2063
#13 0x00007fde6528bdcc in gst_task_func (task=0x1d98750) at gsttask.c:327
#14 0x00007fde643c5248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007fde643c49e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007fde63e11e9a in start_thread (arg=0x7fde3f558700) at pthread_create.c:308
#17 0x00007fde63b3f4bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#18 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fde67f75940 (LWP 30944)):
#0  __lll_lock_wait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:132
#1  0x00007fde63e14080 in _L_lock_903 () from /lib/x86_64-linux-gnu/libpthread.so.0
#2  0x00007fde63e13f19 in __pthread_mutex_lock (mutex=0x3df5210) at pthread_mutex_lock.c:82
#3  0x00007fde643772e1 in g_static_rec_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fde65267ae2 in gst_pad_stop_task (pad=0x3fb80b0) at gstpad.c:5704
#5  0x00007fde652651c0 in gst_pad_activate_pull (pad=0x3fb80b0, active=0) at gstpad.c:835
#6  0x00007fde65265920 in gst_pad_set_active (pad=0x3fb80b0, active=0) at gstpad.c:722
#7  0x00007fde652458b0 in activate_pads (pad=0x3fb80b0, ret=0x7fffdf5f72c0, active=<optimized out>) at gstelement.c:2845
#8  0x00007fde652574ce in gst_iterator_fold (it=0x3df6710, func=0x7fde65245890 <activate_pads>, ret=0x7fffdf5f72c0, user_data=0x7fffdf5f731c) at gstiterator.c:549
---Type <return> to continue, or q <return> to quit---
#9  0x00007fde65245821 in iterator_activate_fold_with_resync (iter=0x3df6710, func=0x7fde65245890 <activate_pads>, user_data=0x7fffdf5f731c) at gstelement.c:2876
#10 0x00007fde65247d9f in gst_element_pads_activate (element=0x1c546f0, active=0) at gstelement.c:2920
#11 0x00007fde652480cc in gst_element_change_state_func (element=0x1c546f0, transition=<optimized out>) at gstelement.c:3002
#12 0x00007fde5462270a in gst_wavparse_change_state (element=<optimized out>, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstwavparse.c:2643
#13 0x00007fde65249dac in gst_element_change_state (element=0x1c546f0, transition=<optimized out>) at gstelement.c:2761
#14 0x00007fde6524a6d0 in gst_element_set_state_func (element=0x1c546f0, state=GST_STATE_READY) at gstelement.c:2717
#15 0x00007fde652378ed in gst_bin_element_set_state (next=GST_STATE_READY, current=GST_STATE_PAUSED, start_time=0, base_time=0, element=0x1c546f0, bin=0x3fbc590) at gstbin.c:2209
#16 gst_bin_change_state_func (element=0x3fbc590, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstbin.c:2518
#17 0x00007fde54a43ecc in gst_decode_bin_change_state (element=0x3fbc590, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstdecodebin.c:2024
#18 0x00007fde65249dac in gst_element_change_state (element=0x3fbc590, transition=<optimized out>) at gstelement.c:2761
#19 0x00007fde6524a6d0 in gst_element_set_state_func (element=0x3fbc590, state=GST_STATE_READY) at gstelement.c:2717
#20 0x00007fde652378ed in gst_bin_element_set_state (next=GST_STATE_READY, current=GST_STATE_PAUSED, start_time=0, base_time=0, element=0x3fbc590, bin=0x3fb2ac0) at gstbin.c:2209
#21 gst_bin_change_state_func (element=0x3fb2ac0, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstbin.c:2518
#22 0x00007fde652692e4 in gst_pipeline_change_state (element=0x3fb2ac0, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstpipeline.c:482
#23 0x00007fde559ce17a in gst_play_base_bin_change_state (element=0x3fb2ac0, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstplaybasebin.c:2745
#24 0x00007fde559b54bf in gst_play_bin_change_state (element=0x3fb2ac0, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstplaybin.c:1952
#25 0x00007fde65249dac in gst_element_change_state (element=0x3fb2ac0, transition=<optimized out>) at gstelement.c:2761
#26 0x00007fde6524a6d0 in gst_element_set_state_func (element=0x3fb2ac0, state=GST_STATE_NULL) at gstelement.c:2717
#27 0x00000000004247ad in gc_sound_fx_close () at gstreamer.c:118
#28 0x0000000000423d44 in gc_sound_play_ogg_list (files=0x3fbe120) at soundutil.c:231
#29 0x00007fde5ca2c229 in py_gc_sound_play_ogg (self=<optimized out>, args=0x3b8fc50) at py-mod-sound.c:74
#30 0x00007fde5c592845 in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#31 0x00007fde5c55d605 in PyEval_EvalCodeEx () from /usr/lib/libpython2.7.so.1.0
#32 0x00007fde5c5928c0 in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#33 0x00007fde5c55d605 in PyEval_EvalCodeEx () from /usr/lib/libpython2.7.so.1.0
#34 0x00007fde5c55d7bd in ?? () from /usr/lib/libpython2.7.so.1.0
---Type <return> to continue, or q <return> to quit---
#35 0x00007fde5c641e83 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#36 0x00007fde5c6261cf in ?? () from /usr/lib/libpython2.7.so.1.0
#37 0x00007fde5c641e83 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#38 0x00007fde5c6427d7 in PyEval_CallObjectWithKeywords () from /usr/lib/libpython2.7.so.1.0
#39 0x00007fde5760c61b in _pyglib_handler_marshal () from /usr/lib/libpyglib-2.0-python2.7.so.0
#40 0x00007fde643a391b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007fde643a2d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#42 0x00007fde643a30a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007fde643a349a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007fde676472f7 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#45 0x000000000041921c in main (argc=2, argv=0x7fffdf5f8598) at gcompris.c:2059
