(gdb) thread apply all bt

Thread 18 (Thread 0x7fffabc81820 (LWP 18956)):
#0  0x000000355b60e6ed in nanosleep () from /lib64/libpthread.so.0
#1  0x00007ffff283be08 in g_usleep (microseconds=<value optimized out>) at gtimer.c:263
#2  0x00007ffff6482114 in ARDOUR::AudioEngine::meter_thread (this=0x275b110)
    at ../libs/ardour/audioengine.cc:710
#3  0x00007ffff648cc26 in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (
    this=0x4116b40, p=0x275b110) at /usr/local/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff648dba5 in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (this=0x4116b50, f=..., 
    a=...) at /usr/local/include/boost/bind/bind.hpp:253
#5  0x00007ffff648dbe2 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x4116b40)
    at /usr/local/include/boost/bind/bind_template.hpp:20
#6  0x00007ffff648dbf9 in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > > >::operator() (this=0x4116b40) at /usr/local/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#7  0x00007ffff648dc1d in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >, void>::call_it (rep=0x4116b10) at /usr/local/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff1bab3b2 in operator() (data=<value optimized out>)
    at /usr/local/include/sigc++-2.0/sigc++/functors/slot.h:440
#9  (anonymous namespace)::call_thread_entry_slot (data=<value optimized out>)
    at thread.cc:46
#10 0x00007ffff2839384 in g_thread_create_proxy (data=0x40f09d0) at gthread.c:1897
#11 0x000000355b606ccb in start_thread () from /lib64/libpthread.so.0
#12 0x000000355aae0c2d in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7fffddb7b700 (LWP 18955)):
#0  0x000000355aad7283 in poll () from /lib64/libc.so.6
#1  0x00007ffff28158b7 in g_main_context_poll (context=0x32c3670, block=1, dispatch=1, 
    self=<value optimized out>) at gmain.c:3093
#2  g_main_context_iterate (context=0x32c3670, block=1, dispatch=1, 
    self=<value optimized out>) at gmain.c:2775
#3  0x00007ffff2815c85 in g_main_loop_run (loop=0x32c3750) at gmain.c:2988
#4  0x00007ffff7aa3e02 in BaseUI::main_thread (this=0x32bd8d0) at ../libs/pbd/base_ui.cc:76
#5  0x00007ffff7aa4a8b in sigc::bound_mem_functor0<void, BaseUI>::operator() (this=0x32c37d8)
    at /usr/local/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#6  0x00007ffff7aa4aa7 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator() (this=0x32c37d0) at /usr/local/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#7  0x00007ffff7aa4acb in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it (rep=0x32c37a0) at /usr/local/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff1bab3b2 in operator() (data=<value optimized out>)
    at /usr/local/include/sigc++-2.0/sigc++/functors/slot.h:440
#9  (anonymous namespace)::call_thread_entry_slot (data=<value optimized out>)
    at thread.cc:46
#10 0x00007ffff2839384 in g_thread_create_proxy (data=0x32c2920) at gthread.c:1897
#11 0x000000355b606ccb in start_thread () from /lib64/libpthread.so.0
#12 0x000000355aae0c2d in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7fffabcfc820 (LWP 18954)):
#0  0x000000355aad7283 in poll () from /lib64/libc.so.6
#1  0x00007ffff64fb7e6 in ARDOUR::Butler::thread_work (this=0x31afc30)
    at ../libs/ardour/butler.cc:159
#2  0x00007ffff64fc7d8 in ARDOUR::Butler::_thread_work (arg=0x31afc30)
    at ../libs/ardour/butler.cc:140
#3  0x00007ffff7adac69 in fake_thread_start (arg=0x3252ac0)
    at ../libs/pbd/pthread_utils.cc:81
#4  0x000000355b606ccb in start_thread () from /lib64/libpthread.so.0
#5  0x000000355aae0c2d in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7fffabd7e700 (LWP 18953)):
#0  0x000000355b60d480 in sem_wait () from /lib64/libpthread.so.0
#1  0x00007ffff65e7d25 in PBD::ProcessSemaphore::wait (this=0x31b1138)
    at ../libs/pbd/pbd/semutils.h:41
#2  0x00007ffff65e3aa2 in ARDOUR::Graph::restart_cycle (this=0x31b1050)
    at ../libs/ardour/graph.cc:257
#3  0x00007ffff65e3afc in ARDOUR::Graph::dec_ref (this=0x31b1050)
    at ../libs/ardour/graph.cc:244
#4  0x00007ffff65e93ce in ARDOUR::GraphNode::finish (this=0x363ac90, chain=1)
    at ../libs/ardour/graphnode.cc:61
#5  0x00007ffff65e2b66 in ARDOUR::Graph::run_one (this=0x31b1050)
    at ../libs/ardour/graph.cc:407
#6  0x00007ffff65e2cf3 in ARDOUR::Graph::helper_thread (this=0x31b1050)
    at ../libs/ardour/graph.cc:443
#7  0x00007ffff65e60e4 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (
    this=0x7fffabd7dca8, p=0x31b1050) at /usr/local/include/boost/bind/mem_fn_template.hpp:49
#8  0x00007ffff65e6367 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffabd7dcb8, f=..., a=...)
    at /usr/local/include/boost/bind/bind.hpp:253
#9  0x00007ffff65e63a4 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffabd7dca8)
    at /usr/local/include/boost/bind/bind_template.hpp:20
#10 0x00007ffff65e63c3 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...)
    at /usr/local/include/boost/function/function_template.hpp:153
#11 0x0000000001004d53 in boost::function0<void>::operator() (this=0x7fffabd7dca0)
    at /usr/local/include/boost/function/function_template.hpp:1013
#12 0x00007ffff647fab8 in ARDOUR::AudioEngine::_start_process_thread (arg=0x31c1520)
    at ../libs/ardour/audioengine.cc:1509
#13 0x000000355b606ccb in start_thread () from /lib64/libpthread.so.0
#14 0x000000355aae0c2d in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7fffabdff700 (LWP 18952)):
#0  0x000000355b60d480 in sem_wait () from /lib64/libpthread.so.0
#1  0x00007ffff65e7d25 in PBD::ProcessSemaphore::wait (this=0x31b1118)
    at ../libs/pbd/pbd/semutils.h:41
#2  0x00007ffff65e299f in ARDOUR::Graph::run_one (this=0x31b1050)
    at ../libs/ardour/graph.cc:393
#3  0x00007ffff65e2cf3 in ARDOUR::Graph::helper_thread (this=0x31b1050)
    at ../libs/ardour/graph.cc:443
#4  0x00007ffff65e60e4 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (
    this=0x7fffabdfeca8, p=0x31b1050) at /usr/local/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff65e6367 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffabdfecb8, f=..., a=...)
    at /usr/local/include/boost/bind/bind.hpp:253
#6  0x00007ffff65e63a4 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffabdfeca8)
    at /usr/local/include/boost/bind/bind_template.hpp:20
#7  0x00007ffff65e63c3 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...)
    at /usr/local/include/boost/function/function_template.hpp:153
#8  0x0000000001004d53 in boost::function0<void>::operator() (this=0x7fffabdfeca0)
    at /usr/local/include/boost/function/function_template.hpp:1013
#9  0x00007ffff647fab8 in ARDOUR::AudioEngine::_start_process_thread (arg=0x31c1520)
    at ../libs/ardour/audioengine.cc:1509
#10 0x000000355b606ccb in start_thread () from /lib64/libpthread.so.0
#11 0x000000355aae0c2d in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7fffd409d700 (LWP 18951)):
#0  0x000000355b60d480 in sem_wait () from /lib64/libpthread.so.0
#1  0x00007ffff65e7d25 in PBD::ProcessSemaphore::wait (this=0x31b1118)
    at ../libs/pbd/pbd/semutils.h:41
#2  0x00007ffff65e299f in ARDOUR::Graph::run_one (this=0x31b1050)
    at ../libs/ardour/graph.cc:393
#3  0x00007ffff65e3a5d in ARDOUR::Graph::main_thread (this=0x31b1050)
    at ../libs/ardour/graph.cc:479
#4  0x00007ffff65e60e4 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (
    this=0x7fffd409cca8, p=0x31b1050) at /usr/local/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff65e6367 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffd409ccb8, f=..., a=...)
    at /usr/local/include/boost/bind/bind.hpp:253
#6  0x00007ffff65e63a4 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffd409cca8)
    at /usr/local/include/boost/bind/bind_template.hpp:20
#7  0x00007ffff65e63c3 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...)
    at /usr/local/include/boost/function/function_template.hpp:153
#8  0x0000000001004d53 in boost::function0<void>::operator() (this=0x7fffd409cca0)
    at /usr/local/include/boost/function/function_template.hpp:1013
#9  0x00007ffff647fab8 in ARDOUR::AudioEngine::_start_process_thread (arg=0x31c1520)
    at ../libs/ardour/audioengine.cc:1509
#10 0x000000355b606ccb in start_thread () from /lib64/libpthread.so.0
#11 0x000000355aae0c2d in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7fffd411e700 (LWP 18950)):
#0  0x000000355b60d560 in sem_timedwait () from /lib64/libpthread.so.0
#1  0x0000003565a20390 in ?? () from /usr/lib64/libjack.so.0
#2  0x0000003565a1018a in ?? () from /usr/lib64/libjack.so.0
#3  0x0000003565a0ea77 in ?? () from /usr/lib64/libjack.so.0
#4  0x00007ffff6484251 in ARDOUR::AudioEngine::process_thread (this=0x275b110)
    at ../libs/ardour/audioengine.cc:459
#5  0x00007ffff64842b7 in ARDOUR::AudioEngine::_process_thread (arg=0x275b110)
    at ../libs/ardour/audioengine.cc:375
#6  0x0000003565a0d1a0 in ?? () from /usr/lib64/libjack.so.0
#7  0x0000003565a1f990 in ?? () from /usr/lib64/libjack.so.0
#8  0x000000355b606ccb in start_thread () from /lib64/libpthread.so.0
#9  0x000000355aae0c2d in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7fffdd37a700 (LWP 18949)):
#0  0x000000355b60df7d in read () from /lib64/libpthread.so.0
#1  0x0000003565a2172a in ?? () from /usr/lib64/libjack.so.0
#2  0x0000003565a23fc7 in ?? () from /usr/lib64/libjack.so.0
#3  0x0000003565a1f990 in ?? () from /usr/lib64/libjack.so.0
#4  0x000000355b606ccb in start_thread () from /lib64/libpthread.so.0
#5  0x000000355aae0c2d in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7fffe40bd700 (LWP 18948)):
#0  0x000000355b60b3b4 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x0000003565a21171 in ?? () from /usr/lib64/libjack.so.0
#2  0x0000003565a1c885 in ?? () from /usr/lib64/libjack.so.0
#3  0x0000003565a1f990 in ?? () from /usr/lib64/libjack.so.0
#4  0x000000355b606ccb in start_thread () from /lib64/libpthread.so.0
#5  0x000000355aae0c2d in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fffe51f2700 (LWP 18942)):
#0  0x000000355aa330c5 in raise () from /lib64/libc.so.6
#1  0x000000355aa34a76 in abort () from /lib64/libc.so.6
#2  0x00007ffff281ba09 in g_logv (log_domain=0x7ffff1bba901 "glibmm", 
    log_level=G_LOG_LEVEL_ERROR, 
    format=0x7ffff1bbb9a8 "\nunhandled exception (type std::exception) in signal handler:\nwhat: %s\n", args1=0x7fffe51f1bb0) at gmessages.c:557
#3  0x00007ffff281bce3 in g_log (log_domain=0x49f9 <Address 0x49f9 out of bounds>, 
    log_level=18942, format=0x6 <Address 0x6 out of bounds>) at gmessages.c:577
#4  0x00007ffff1bae366 in glibmm_unexpected_exception () at exceptionhandler.cc:72
#5  Glib::exception_handlers_invoke () at exceptionhandler.cc:151
#6  0x00007ffff1bab3cc in (anonymous namespace)::call_thread_entry_slot (
    data=<value optimized out>) at thread.cc:56
#7  0x00007ffff2839384 in g_thread_create_proxy (data=0x2468b60) at gthread.c:1897
#8  0x000000355b606ccb in start_thread () from /lib64/libpthread.so.0
#9  0x000000355aae0c2d in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fffe59f3700 (LWP 18941)):
#0  0x000000355b60b3b4 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ffff68b8fa3 in peak_thread_work () at ../libs/ardour/source_factory.cc:69
#2  0x00000000015cbb2f in sigc::pointer_functor0<void>::operator() (this=0x245f578)
    at /usr/local/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#3  0x00000000015cbb4b in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (
    this=0x245f570) at /usr/local/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#4  0x00000000015cbb6f in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x245f540) at /usr/local/include/sigc++-2.0/sigc++/functors/slot.h:103
#5  0x00007ffff1bab3b2 in operator() (data=<value optimized out>)
    at /usr/local/include/sigc++-2.0/sigc++/functors/slot.h:440
#6  (anonymous namespace)::call_thread_entry_slot (data=<value optimized out>)
    at thread.cc:46
#7  0x00007ffff2839384 in g_thread_create_proxy (data=0x2468f70) at gthread.c:1897
#8  0x000000355b606ccb in start_thread () from /lib64/libpthread.so.0
#9  0x000000355aae0c2d in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7fffe61f4700 (LWP 18940)):
#0  0x000000355b60b3b4 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ffff68b8fa3 in peak_thread_work () at ../libs/ardour/source_factory.cc:69
#2  0x00000000015cbb2f in sigc::pointer_functor0<void>::operator() (this=0x245f888)
    at /usr/local/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#3  0x00000000015cbb4b in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (
    this=0x245f880) at /usr/local/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251
#4  0x00000000015cbb6f in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x245f850) at /usr/local/include/sigc++-2.0/sigc++/functors/slot.h:103
#5  0x00007ffff1bab3b2 in operator() (data=<value optimized out>)
    at /usr/local/include/sigc++-2.0/sigc++/functors/slot.h:440
#6  (anonymous namespace)::call_thread_entry_slot (data=<value optimized out>)
    at thread.cc:46
#7  0x00007ffff2839384 in g_thread_create_proxy (data=0x2469150) at gthread.c:1897
#8  0x000000355b606ccb in start_thread () from /lib64/libpthread.so.0
#9  0x000000355aae0c2d in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7fffec776900 (LWP 18937)):
#0  0x000000355aad7283 in poll () from /lib64/libc.so.6
#1  0x000000355ce08b6a in ?? () from /usr/lib64/libxcb.so.1
#2  0x000000355ce0a1cf in xcb_wait_for_reply () from /usr/lib64/libxcb.so.1
#3  0x000000355c64db3d in _XReply () from /usr/lib64/libX11.so.6
#4  0x000000355c62a577 in XGetWindowProperty () from /usr/lib64/libX11.so.6
#5  0x00007ffff0eabb83 in gdk_check_wm_state_changed (display=0x2225000, event=0x46c0310, 
    xevent=0x7fffffffcab0, return_exposes=0) at gdkevents-x11.c:540
#6  gdk_event_translate (display=0x2225000, event=0x46c0310, xevent=0x7fffffffcab0, 
    return_exposes=0) at gdkevents-x11.c:1936
#7  0x00007ffff0eabe66 in _gdk_events_queue (display=0x2225000) at gdkevents-x11.c:2310
#8  0x00007ffff0eac2ce in gdk_event_dispatch (source=<value optimized out>, callback=0x1, 
    user_data=0xffffffffffffffff) at gdkevents-x11.c:2371
#9  0x00007ffff2811ff5 in g_main_dispatch (context=0x2232c20) at gmain.c:2149
#10 g_main_context_dispatch (context=0x2232c20) at gmain.c:2702
#11 0x00007ffff28158a0 in g_main_context_iterate (context=0x2232c20, block=1, dispatch=1, 
    self=<value optimized out>) at gmain.c:2780
#12 0x00007ffff2815c85 in g_main_loop_run (loop=0x46efb30) at gmain.c:2988
#13 0x00007ffff1238233 in IA__gtk_main () at gtkmain.c:1237
#14 0x00007ffff5390ddf in Gtkmm2ext::UI::run (this=0x22094c0, old_receiver=...)
    at ../libs/gtkmm2ext/gtk_ui.cc:268
#15 0x000000000142bb26 in main (argc=1, argv=0x7fffffffcfe8) at ../gtk2_ardour/main.cc:649