Thread 16 (Thread 0x7fffd5033710 (LWP 2112)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fffd962fdfb in ?? () from /usr/lib/libjack.so.0
#2  0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at pthread_create.c:300
#3  0x00007ffff6a9b01d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 13 (Thread 0x7fffde24d710 (LWP 2108)):
#0  0x00007ffff6a90103 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fffe0aeaadf in poll_func (ufds=0xe89e30, nfds=1, timeout=-1, userdata=0xe435d0)
    at pulse/thread-mainloop.c:75
#2  0x00007fffe0adab76 in pa_mainloop_poll (m=0xe89800) at pulse/mainloop.c:879
#3  0x00007fffe0adbf59 in pa_mainloop_iterate (m=0xe89800, block=<value optimized out>, retval=0x0)
    at pulse/mainloop.c:961
#4  0x00007fffe0adc010 in pa_mainloop_run (m=0xe89800, retval=0x0) at pulse/mainloop.c:979
#5  0x00007fffe0aea8eb in thread (userdata=0xe8e610) at pulse/thread-mainloop.c:94
#6  0x00007fffe06a2710 in internal_thread_func (userdata=0xe89de0) at pulsecore/thread-posix.c:72
#7  0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at pthread_create.c:300
#8  0x00007ffff6a9b01d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 12 (Thread 0x7fffdea4e710 (LWP 2109)):
#0  0x00007ffff6a90103 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fffe0aeaadf in poll_func (ufds=0xe89fb0, nfds=1, timeout=-1, userdata=0x7fffe40140d0)
    at pulse/thread-mainloop.c:75
#2  0x00007fffe0adab76 in pa_mainloop_poll (m=0x7fffe4016710) at pulse/mainloop.c:879
#3  0x00007fffe0adbf59 in pa_mainloop_iterate (m=0x7fffe4016710, block=<value optimized out>, retval=0x0)
    at pulse/mainloop.c:961
#4  0x00007fffe0adc010 in pa_mainloop_run (m=0x7fffe4016710, retval=0x0) at pulse/mainloop.c:979
#5  0x00007fffe0aea8eb in thread (userdata=0x7fffe4017970) at pulse/thread-mainloop.c:94
#6  0x00007fffe06a2710 in internal_thread_func (userdata=0x7fffe4014330) at pulsecore/thread-posix.c:72
#7  0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at pthread_create.c:300
#8  0x00007ffff6a9b01d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7fffe1716710 (LWP 2107)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ffff2950cb3 in gst_queue_loop (pad=<value optimized out>) at gstqueue.c:1174
#2  0x00007ffff544eb6b in gst_task_func (task=0x7fffec015910) at gsttask.c:271
#3  0x00007ffff48e32ef in g_thread_pool_thread_proxy (data=<value optimized out>) at gthreadpool.c:315
#4  0x00007ffff48e14a4 in g_thread_create_proxy (data=0x7fffe4015430) at gthread.c:1893
#5  0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007ffff6a9b01d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7fffe1f17710 (LWP 2106)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ffff2950cb3 in gst_queue_loop (pad=<value optimized out>) at gstqueue.c:1174
#2  0x00007ffff544eb6b in gst_task_func (task=0x7fffec015310) at gsttask.c:271
#3  0x00007ffff48e32ef in g_thread_pool_thread_proxy (data=<value optimized out>) at gthreadpool.c:315
#4  0x00007ffff48e14a4 in g_thread_create_proxy (data=0xd9ba60) at gthread.c:1893
#5  0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007ffff6a9b01d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7fffe2dca710 (LWP 2105)):
#0  0x00007ffff7bd17dd in nanosleep () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007ffff48e4068 in IA__g_usleep (microseconds=<value optimized out>) at gtimer.c:260
#2  0x00007fffe35d270f in gst_ximagesink_event_thread (ximagesink=0xe5b2d0) at ximagesink.c:1138
#3  0x00007ffff48e14a4 in g_thread_create_proxy (data=0x7fffec01bce0) at gthread.c:1893
#4  0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at pthread_create.c:300
---Type <return> to continue, or q <return> to quit---
#5  0x00007ffff6a9b01d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7fffe35cb710 (LWP 2104)):
#0  0x00007ffff7bd17dd in nanosleep () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007ffff48e4068 in IA__g_usleep (microseconds=<value optimized out>) at gtimer.c:260
#2  0x00007fffe35d270f in gst_ximagesink_event_thread (ximagesink=0x7fffe4015560) at ximagesink.c:1138
#3  0x00007ffff48e14a4 in g_thread_create_proxy (data=0xe5b260) at gthread.c:1893
#4  0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at pthread_create.c:300
#5  0x00007ffff6a9b01d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7fffe9930710 (LWP 2103)):
#0  0x00007ffff7bcabe5 in pthread_join (threadid=140736767145744, thread_return=0x0) at pthread_join.c:89
#1  0x00007fffd962fcac in jack_messagebuffer_exit () from /usr/lib/libjack.so.0
#2  0x00007fffd962edb6 in jack_client_open_aux () from /usr/lib/libjack.so.0
#3  0x00007fffd962f483 in jack_client_open () from /usr/lib/libjack.so.0
#4  0x00007fffd9848d71 in gst_jack_audio_make_connection (id=0xae1630 "test2.py", server=0x0, 
    type=<value optimized out>, shutdown=<value optimized out>, process=<value optimized out>, 
    buffer_size=<value optimized out>, sample_rate=0x7fffd9846440 <jack_sample_rate_cb>, user_data=0xd77070, status=
    0x7fffe992ed7c) at gstjackaudioclient.c:210
#5  gst_jack_audio_get_connection (id=0xae1630 "test2.py", server=0x0, type=<value optimized out>, 
    shutdown=<value optimized out>, process=<value optimized out>, buffer_size=<value optimized out>, 
    sample_rate=0x7fffd9846440 <jack_sample_rate_cb>, user_data=0xd77070, status=0x7fffe992ed7c)
    at gstjackaudioclient.c:284
#6  gst_jack_audio_client_new (id=0xae1630 "test2.py", server=0x0, type=<value optimized out>, 
    shutdown=<value optimized out>, process=<value optimized out>, buffer_size=<value optimized out>, 
    sample_rate=0x7fffd9846440 <jack_sample_rate_cb>, user_data=0xd77070, status=0x7fffe992ed7c)
    at gstjackaudioclient.c:422
#7  0x00007fffd98477c0 in gst_jack_ring_buffer_open_device (buf=0xd77070) at gstjackaudiosink.c:336
#8  0x00007ffff19f4d3c in gst_ring_buffer_open_device (buf=0xd77070) at gstringbuffer.c:654
#9  0x00007ffff19fc0b5 in gst_base_audio_sink_change_state (element=0xe9bc00, 
    transition=GST_STATE_CHANGE_NULL_TO_READY) at gstbaseaudiosink.c:1827
#10 0x00007ffff540be2c in gst_element_change_state (element=0x7fffd50339e0, transition=0) at gstelement.c:2546
#11 0x00007ffff540ef9b in gst_element_set_state_func (element=0xe9bc00, state=GST_STATE_READY) at gstelement.c:2502
#12 0x00007fffe8f2a6c8 in gst_auto_audio_sink_find_best (element=0xe4baf0, transition=<value optimized out>)
    at gstautoaudiosink.c:289
#13 gst_auto_audio_sink_detect (element=0xe4baf0, transition=<value optimized out>) at gstautoaudiosink.c:343
#14 gst_auto_audio_sink_change_state (element=0xe4baf0, transition=<value optimized out>) at gstautoaudiosink.c:391
#15 0x00007ffff540be2c in gst_element_change_state (element=0x7fffd50339e0, transition=0) at gstelement.c:2546
#16 0x00007ffff540ef9b in gst_element_set_state_func (element=0xe4baf0, state=GST_STATE_READY) at gstelement.c:2502
#17 0x00007ffff31b372d in try_element (playsink=0xd94300, element=0xe4baf0, unref=1) at gstplaysink.c:1019
#18 0x00007ffff31b6f1d in gen_audio_chain (playsink=0xd94300, raw=1, queue=0) at gstplaysink.c:1580
#19 0x00007ffff31b82e1 in gst_play_sink_reconfigure (playsink=0xd94300) at gstplaysink.c:2232
#20 0x00007ffff31ad851 in no_more_pads_cb (decodebin=<value optimized out>, group=0xd96b20) at gstplaybin2.c:2828
#21 0x00007ffff518e3fe in IA__g_closure_invoke (closure=0xe0a8f0, return_value=0x0, n_param_values=1, param_values=
    0xe09220, invocation_hint=0x7fffe992f3b0) at gclosure.c:767
#22 0x00007ffff51a4377 in signal_emit_unlocked_R (node=0xaf4920, detail=<value optimized out>, 
    instance=<value optimized out>, emission_return=<value optimized out>, instance_and_params=<value optimized out>)
    at gsignal.c:3248
#23 0x00007ffff51a59f6 in IA__g_signal_emit_valist (instance=0xd9c260, signal_id=<value optimized out>, detail=0, 
    var_args=0x7fffe992f5a0) at gsignal.c:2981
#24 0x00007ffff51a5f43 in IA__g_signal_emit (instance=0x7fffd50339e0, signal_id=0, detail=2112) at gsignal.c:3038
#25 0x00007ffff518e3fe in IA__g_closure_invoke (closure=0x7fffec001f50, return_value=0x0, n_param_values=1, 
    param_values=0xe091a0, invocation_hint=0x7fffe992f7b0) at gclosure.c:767
#26 0x00007ffff51a4377 in signal_emit_unlocked_R (node=0xaf4920, detail=<value optimized out>, 
    instance=<value optimized out>, emission_return=<value optimized out>, instance_and_params=<value optimized out>)
    at gsignal.c:3248
#27 0x00007ffff51a59f6 in IA__g_signal_emit_valist (instance=0xdaa3b0, signal_id=<value optimized out>, detail=0, 
    var_args=0x7fffe992f9a0) at gsignal.c:2981
#28 0x00007ffff51a5f43 in IA__g_signal_emit (instance=0x7fffd50339e0, signal_id=0, detail=2112) at gsignal.c:3038
#29 0x00007ffff2b7694a in gst_decode_bin_expose (dbin=0xdaa3b0) at gstdecodebin2.c:3148
#30 0x00007ffff2b77af0 in source_pad_blocked_cb (pad=<value optimized out>, blocked=<value optimized out>, dpad=
    0x7fffec012090) at gstdecodebin2.c:3267
---Type <return> to continue, or q <return> to quit---
#31 0x00007ffff54207c4 in handle_pad_block (pad=0x7fffec016800) at gstpad.c:3986
#32 0x00007ffff5422c98 in gst_pad_push_event (pad=0x7fffec016800, event=0xb91880) at gstpad.c:4931
#33 0x00007fffeaba9372 in gst_ffmpegdec_sink_event (pad=<value optimized out>, event=0xb91880) at gstffmpegdec.c:2460
#34 0x00007ffff5422696 in gst_pad_send_event (pad=0x7fffec016680, event=0xb91880) at gstpad.c:5098
#35 0x00007ffff5422b63 in gst_pad_push_event (pad=0x7fffec016500, event=0xb91880) at gstpad.c:4954
#36 0x00007ffff2960547 in gst_single_queue_push_one (pad=<value optimized out>) at gstmultiqueue.c:942
#37 gst_multi_queue_loop (pad=<value optimized out>) at gstmultiqueue.c:1101
#38 0x00007ffff544eb6b in gst_task_func (task=0xe02d20) at gsttask.c:271
#39 0x00007ffff48e32ef in g_thread_pool_thread_proxy (data=<value optimized out>) at gthreadpool.c:315
#40 0x00007ffff48e14a4 in g_thread_create_proxy (data=0x7fffec01f850) at gthread.c:1893
#41 0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at pthread_create.c:300
#42 0x00007ffff6a9b01d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#43 0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7fffea131710 (LWP 2102)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ffff5420876 in handle_pad_block (pad=0x7fffec016080) at gstpad.c:4013
#2  0x00007ffff5422c98 in gst_pad_push_event (pad=0x7fffec016080, event=0xaf1200) at gstpad.c:4931
#3  0x00007ffff03b0607 in gst_faad_sink_event (pad=0xe12de0, event=0xaf1200) at gstfaad.c:649
#4  0x00007ffff5422696 in gst_pad_send_event (pad=0xe12de0, event=0xaf1200) at gstpad.c:5098
#5  0x00007ffff5422b63 in gst_pad_push_event (pad=0xe12c60, event=0xaf1200) at gstpad.c:4954
#6  0x00007ffff2960547 in gst_single_queue_push_one (pad=<value optimized out>) at gstmultiqueue.c:942
#7  gst_multi_queue_loop (pad=<value optimized out>) at gstmultiqueue.c:1101
#8  0x00007ffff544eb6b in gst_task_func (task=0xe02c20) at gsttask.c:271
#9  0x00007ffff48e32ef in g_thread_pool_thread_proxy (data=<value optimized out>) at gthreadpool.c:315
#10 0x00007ffff48e14a4 in g_thread_create_proxy (data=0x7fffec011840) at gthread.c:1893
#11 0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at pthread_create.c:300
#12 0x00007ffff6a9b01d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fffea932710 (LWP 2101)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ffff56d6839 in gst_data_queue_push (queue=0xdfec80, item=0x7fffec00dad0) at gstdataqueue.c:419
#2  0x00007ffff295fa9b in gst_multi_queue_chain (pad=<value optimized out>, buffer=<value optimized out>)
    at gstmultiqueue.c:1169
#3  0x00007ffff542501d in gst_pad_chain_data_unchecked (pad=0xe12ae0, is_buffer=1, data=0x7fffe4005a10)
    at gstpad.c:4176
#4  0x00007ffff54258de in gst_pad_push_data (pad=0xe12960, is_buffer=1, data=0x7fffe4005a10) at gstpad.c:4405
#5  0x00007ffff1e24b5b in gst_qtdemux_decorate_and_push_buffer (qtdemux=0xe00340, stream=0x7fffec00dc00, buf=
    0x7fffe4005a10, timestamp=<value optimized out>, duration=<value optimized out>, keyframe=<value optimized out>, 
    position=116099773, byte_position=4391) at qtdemux.c:2750
#6  0x00007ffff1e3396c in gst_qtdemux_loop_state_movie (pad=<value optimized out>) at qtdemux.c:2829
#7  gst_qtdemux_loop (pad=<value optimized out>) at qtdemux.c:2880
#8  0x00007ffff544eb6b in gst_task_func (task=0xe02120) at gsttask.c:271
#9  0x00007ffff48e32ef in g_thread_pool_thread_proxy (data=<value optimized out>) at gthreadpool.c:315
#10 0x00007ffff48e14a4 in g_thread_create_proxy (data=0x7fffec00b4f0) at gthread.c:1893
#11 0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at pthread_create.c:300
#12 0x00007ffff6a9b01d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fffebfff710 (LWP 2100)):
#0  0x00007ffff69fe175 in *__GI_raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1  0x00007ffff6a00f80 in *__GI_abort () at abort.c:92
#2  0x00007ffff6a342bb in __libc_message (do_abort=<value optimized out>, fmt=<value optimized out>)
    at ../sysdeps/unix/sysv/linux/libc_fatal.c:189
#3  0x00007ffff6a3db16 in malloc_printerr (action=3, str=0x7ffff6af4a60 "double free or corruption (fasttop)", 
    ptr=<value optimized out>) at malloc.c:6267
#4  0x00007ffff6a4288c in *__GI___libc_free (mem=<value optimized out>) at malloc.c:3739
#5  0x00007fffe0aefb2e in pa_xfree (p=0x7fffe401c8d0) at pulse/xmalloc.c:131
#6  0x00007fffe0680b5a in pa_get_runtime_dir () at pulsecore/core-util.c:1506
#7  0x00007fffe0680ec6 in get_path (fn=0x7fffe0af0e95 "native", prependmid=false, rt=6) at pulsecore/core-util.c:1911
#8  0x00007fffe0acc9c3 in prepend_per_user (l=0x7fffe401c460) at pulse/context.c:661
#9  0x00007fffe0ace7fb in pa_context_connect (c=0x7fffe4015000, server=0x7fffe401c4f0 "", 
    flags=PA_CONTEXT_NOAUTOSPAWN, api=0x0) at pulse/context.c:1007
---Type <return> to continue, or q <return> to quit---
#10 0x00007fffe0d0a9ea in gst_pulseringbuffer_open_device (buf=0xd76790) at pulsesink.c:430
#11 0x00007ffff19f4d3c in gst_ring_buffer_open_device (buf=0xd76790) at gstringbuffer.c:654
#12 0x00007ffff19fc0b5 in gst_base_audio_sink_change_state (element=0xe8eee0, 
    transition=GST_STATE_CHANGE_NULL_TO_READY) at gstbaseaudiosink.c:1827
#13 0x00007ffff540be2c in gst_element_change_state (element=0x82f, transition=2100) at gstelement.c:2546
#14 0x00007ffff540ef9b in gst_element_set_state_func (element=0xe8eee0, state=GST_STATE_READY) at gstelement.c:2502
#15 0x00007fffe8f2a6c8 in gst_auto_audio_sink_find_best (element=0xe4b4b0, transition=<value optimized out>)
    at gstautoaudiosink.c:289
#16 gst_auto_audio_sink_detect (element=0xe4b4b0, transition=<value optimized out>) at gstautoaudiosink.c:343
#17 gst_auto_audio_sink_change_state (element=0xe4b4b0, transition=<value optimized out>) at gstautoaudiosink.c:391
#18 0x00007ffff540be2c in gst_element_change_state (element=0x82f, transition=2100) at gstelement.c:2546
#19 0x00007ffff540ef9b in gst_element_set_state_func (element=0xe4b4b0, state=GST_STATE_READY) at gstelement.c:2502
#20 0x00007ffff31b372d in try_element (playsink=0xd94070, element=0xe4b4b0, unref=1) at gstplaysink.c:1019
#21 0x00007ffff31b6f1d in gen_audio_chain (playsink=0xd94070, raw=1, queue=0) at gstplaysink.c:1580
#22 0x00007ffff31b82e1 in gst_play_sink_reconfigure (playsink=0xd94070) at gstplaysink.c:2232
#23 0x00007ffff31ad851 in no_more_pads_cb (decodebin=<value optimized out>, group=0xb22c10) at gstplaybin2.c:2828
#24 0x00007ffff518e3fe in IA__g_closure_invoke (closure=0xd9bc60, return_value=0x0, n_param_values=1, param_values=
    0xbf5380, invocation_hint=0x7fffebffe3b0) at gclosure.c:767
#25 0x00007ffff51a4377 in signal_emit_unlocked_R (node=0xaf4920, detail=<value optimized out>, 
    instance=<value optimized out>, emission_return=<value optimized out>, instance_and_params=<value optimized out>)
    at gsignal.c:3248
#26 0x00007ffff51a59f6 in IA__g_signal_emit_valist (instance=0xd9c030, signal_id=<value optimized out>, detail=0, 
    var_args=0x7fffebffe5a0) at gsignal.c:2981
#27 0x00007ffff51a5f43 in IA__g_signal_emit (instance=0x82f, signal_id=2100, detail=6) at gsignal.c:3038
#28 0x00007ffff518e3fe in IA__g_closure_invoke (closure=0xdaf3b0, return_value=0x0, n_param_values=1, param_values=
    0xb91f00, invocation_hint=0x7fffebffe7b0) at gclosure.c:767
#29 0x00007ffff51a4377 in signal_emit_unlocked_R (node=0xaf4920, detail=<value optimized out>, 
    instance=<value optimized out>, emission_return=<value optimized out>, instance_and_params=<value optimized out>)
    at gsignal.c:3248
#30 0x00007ffff51a59f6 in IA__g_signal_emit_valist (instance=0xdaa190, signal_id=<value optimized out>, detail=0, 
    var_args=0x7fffebffe9a0) at gsignal.c:2981
#31 0x00007ffff51a5f43 in IA__g_signal_emit (instance=0x82f, signal_id=2100, detail=6) at gsignal.c:3038
#32 0x00007ffff2b7694a in gst_decode_bin_expose (dbin=0xdaa190) at gstdecodebin2.c:3148
#33 0x00007ffff2b77af0 in source_pad_blocked_cb (pad=<value optimized out>, blocked=<value optimized out>, dpad=
    0xdcb7e0) at gstdecodebin2.c:3267
#34 0x00007ffff54207c4 in handle_pad_block (pad=0x7fffec016e00) at gstpad.c:3986
#35 0x00007ffff5422c98 in gst_pad_push_event (pad=0x7fffec016e00, event=0x7fffec008b00) at gstpad.c:4931
#36 0x00007fffeaba9372 in gst_ffmpegdec_sink_event (pad=<value optimized out>, event=0x7fffec008b00)
    at gstffmpegdec.c:2460
#37 0x00007ffff5422696 in gst_pad_send_event (pad=0x7fffec016c80, event=0x7fffec008b00) at gstpad.c:5098
#38 0x00007ffff5422b63 in gst_pad_push_event (pad=0xe127e0, event=0x7fffec008b00) at gstpad.c:4954
#39 0x00007ffff2960547 in gst_single_queue_push_one (pad=<value optimized out>) at gstmultiqueue.c:942
#40 gst_multi_queue_loop (pad=<value optimized out>) at gstmultiqueue.c:1101
#41 0x00007ffff544eb6b in gst_task_func (task=0xe02720) at gsttask.c:271
#42 0x00007ffff48e32ef in g_thread_pool_thread_proxy (data=<value optimized out>) at gthreadpool.c:315
#43 0x00007ffff48e14a4 in g_thread_create_proxy (data=0x7fffec0084d0) at gthread.c:1893
#44 0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at pthread_create.c:300
#45 0x00007ffff6a9b01d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#46 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7ffff0db3710 (LWP 2099)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ffff5420876 in handle_pad_block (pad=0xe12360) at gstpad.c:4013
#2  0x00007ffff5422c98 in gst_pad_push_event (pad=0xe12360, event=0x7fffec008a40) at gstpad.c:4931
#3  0x00007ffff03b0607 in gst_faad_sink_event (pad=0xda8b40, event=0x7fffec008a40) at gstfaad.c:649
#4  0x00007ffff5422696 in gst_pad_send_event (pad=0xda8b40, event=0x7fffec008a40) at gstpad.c:5098
#5  0x00007ffff5422b63 in gst_pad_push_event (pad=0xda89c0, event=0x7fffec008a40) at gstpad.c:4954
#6  0x00007ffff2960547 in gst_single_queue_push_one (pad=<value optimized out>) at gstmultiqueue.c:942
#7  gst_multi_queue_loop (pad=<value optimized out>) at gstmultiqueue.c:1101
#8  0x00007ffff544eb6b in gst_task_func (task=0xe02620) at gsttask.c:271
#9  0x00007ffff48e32ef in g_thread_pool_thread_proxy (data=<value optimized out>) at gthreadpool.c:315
#10 0x00007ffff48e14a4 in g_thread_create_proxy (data=0xe05c40) at gthread.c:1893
#11 0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at pthread_create.c:300
#12 0x00007ffff6a9b01d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
---Type <return> to continue, or q <return> to quit---
#13 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7ffff15b4710 (LWP 2098)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007ffff56d6839 in gst_data_queue_push (queue=0xde2e40, item=0xe47300) at gstdataqueue.c:419
#2  0x00007ffff295fa9b in gst_multi_queue_chain (pad=<value optimized out>, buffer=<value optimized out>)
    at gstmultiqueue.c:1169
#3  0x00007ffff542501d in gst_pad_chain_data_unchecked (pad=0xda8840, is_buffer=1, data=0xde28c0) at gstpad.c:4176
#4  0x00007ffff54258de in gst_pad_push_data (pad=0xda86c0, is_buffer=1, data=0xde28c0) at gstpad.c:4405
#5  0x00007ffff1e24b5b in gst_qtdemux_decorate_and_push_buffer (qtdemux=0xe000f0, stream=0xdffd20, buf=0xde28c0, 
    timestamp=<value optimized out>, duration=<value optimized out>, keyframe=<value optimized out>, 
    position=116099773, byte_position=4391) at qtdemux.c:2750
#6  0x00007ffff1e3396c in gst_qtdemux_loop_state_movie (pad=<value optimized out>) at qtdemux.c:2829
#7  gst_qtdemux_loop (pad=<value optimized out>) at qtdemux.c:2880
#8  0x00007ffff544eb6b in gst_task_func (task=0xe02020) at gsttask.c:271
#9  0x00007ffff48e32ef in g_thread_pool_thread_proxy (data=<value optimized out>) at gthreadpool.c:315
#10 0x00007ffff48e14a4 in g_thread_create_proxy (data=0xdff3b0) at gthread.c:1893
#11 0x00007ffff7bc98ba in start_thread (arg=<value optimized out>) at pthread_create.c:300
#12 0x00007ffff6a9b01d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ffff7fdb700 (LWP 2095)):
#0  0x00007ffff6a90103 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1)
    at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ffff48bbfe9 in g_main_context_poll (context=0xd51210, block=<value optimized out>, 
    dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:2904
#2  g_main_context_iterate (context=0xd51210, block=<value optimized out>, dispatch=<value optimized out>, 
    self=<value optimized out>) at gmain.c:2586
#3  0x00007ffff48bc795 in IA__g_main_loop_run (loop=0xafde50) at gmain.c:2799
#4  0x00007ffff4672011 in _wrap_g_main_loop_run (self=0x7ffff7f5a150)
    at /tmp/buildd/pygobject-2.21.1/glib/pygmainloop.c:325
#5  0x00000000004a7c6f in call_function (f=Frame 0x9187d0, for file test2.py, line 24, in <module> (), 
    throwflag=<value optimized out>) at ../Python/ceval.c:3734
#6  PyEval_EvalFrameEx (f=Frame 0x9187d0, for file test2.py, line 24, in <module> (), throwflag=<value optimized out>)
    at ../Python/ceval.c:2412
#7  0x00000000004a9551 in PyEval_EvalCodeEx (co=0x7ffff7efb6c0, globals=<value optimized out>, 
    locals=<value optimized out>, args=0x0, argcount=<value optimized out>, kws=<value optimized out>, kwcount=0, 
    defs=0x0, defcount=0, closure=0x0) at ../Python/ceval.c:3000
#8  0x00000000004a9622 in PyEval_EvalCode (co=0xe25200, globals=<unknown at remote 0x2>, locals=
    <unknown at remote 0x-1>) at ../Python/ceval.c:541
#9  0x00000000004c983e in run_mod (fp=<value optimized out>, filename=0x7fffffffde82 "test2.py", 
    start=<value optimized out>, globals=<value optimized out>, locals=<value optimized out>, closeit=1, flags=
    0x7fffffffd9d0) at ../Python/pythonrun.c:1351
#10 PyRun_FileExFlags (fp=<value optimized out>, filename=0x7fffffffde82 "test2.py", start=<value optimized out>, 
    globals=<value optimized out>, locals=<value optimized out>, closeit=1, flags=0x7fffffffd9d0)
    at ../Python/pythonrun.c:1337
#11 0x00000000004c9a54 in PyRun_SimpleFileExFlags (fp=<value optimized out>, filename=0x7fffffffde82 "test2.py", 
    closeit=1, flags=0x7fffffffd9d0) at ../Python/pythonrun.c:941
#12 0x000000000041a6bd in Py_Main (argc=-135319424, argv=<value optimized out>) at ../Modules/main.c:577
#13 0x00007ffff69eac4d in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, 
    ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=0x7fffffffdae8) at libc-start.c:228
#14 0x00000000004198d9 in _start ()
