[Thread 0xaf4e4b90 (LWP 18875) exited]
ardour-3.0: libs/evoral/src/Note.cpp:41: Evoral::Note<Time>::Note(uint8_t, Time, Time, uint8_t, uint8_t) [with Time = double]: Assertion `length() == l' failed.

Program received signal SIGABRT, Aborted.
0xffffe424 in __kernel_vsyscall ()       
Missing debug package(s), you should install: nss_mdns-debug
(gdb) thread apply all bt                                   

Thread 18 (Thread 0xada80cb0 (LWP 18868)):
#0  0xffffe424 in __kernel_vsyscall ()    
#1  0xb5e802d7 in poll () from /lib/i686/libc.so.6
#2  0xb7de1b80 in ARDOUR::Session::midi_thread_work (this=0xa411608) at libs/ardour/session_midi.cc:1190
#3  0xb7de2039 in ARDOUR::Session::_midi_thread_work (arg=0xa411608) at libs/ardour/session_midi.cc:1104
#4  0xb6850315 in start_thread () from /lib/i686/libpthread.so.0                                        
#5  0xb5e8ad4e in clone () from /lib/i686/libc.so.6                                                     

Thread 17 (Thread 0xadafbcb0 (LWP 18867)):
#0  0xffffe424 in __kernel_vsyscall ()    
#1  0xb5e802d7 in poll () from /lib/i686/libc.so.6
#2  0xb7db781c in ARDOUR::Session::butler_thread_work (this=0xa411608) at libs/ardour/session_butler.cc:187
#3  0xb7db880f in ARDOUR::Session::_butler_thread_work (arg=0xa411608) at libs/ardour/session_butler.cc:167
#4  0xb6850315 in start_thread () from /lib/i686/libpthread.so.0                                           
#5  0xb5e8ad4e in clone () from /lib/i686/libc.so.6                                                        

Thread 15 (Thread 0xaddcecb0 (LWP 18865)):
#0  0xffffe424 in __kernel_vsyscall ()    
#1  0xb68573b6 in nanosleep () from /lib/i686/libpthread.so.0
#2  0xb7414b1e in IA__g_usleep (microseconds=2916934528) at gtimer.c:170
#3  0xb73758b5 in Glib::usleep (microseconds=10000) at libs/glibmm2/glib/glibmm/timer.cc:68
#4  0xb7b983d4 in ARDOUR::AudioEngine::meter_thread (this=0xa1a6238) at libs/ardour/audioengine.cc:494
#5  0xb7b9cf7f in sigc::bound_mem_functor0<void, ARDOUR::AudioEngine>::operator() (this=0xa407094) at libs/sigc++2/sigc++/functors/mem_fun.h:1787
#6  0xb7b9cfa6 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ARDOUR::AudioEngine> >::operator() (this=0xa407090) at libs/sigc++2/sigc++/adaptors/adaptor_trait.h:251
#7  0xb7b9cfd2 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ARDOUR::AudioEngine>, void>::call_it (rep=0xa407078) at libs/sigc++2/sigc++/functors/slot.h:103   
#8  0x084a0fda in sigc::slot0<void>::operator() (this=0xa3e9de0) at libs/sigc++2/sigc++/functors/slot.h:440                                                                   
#9  0xb737a63f in call_thread_entry_slot (data=0xa3e9de0) at libs/glibmm2/glib/glibmm/thread.cc:46                                                                            
#10 0xb7412724 in g_thread_create_proxy (data=0xa4070c8) at gthread.c:635                                                                                                     
#11 0xb6850315 in start_thread () from /lib/i686/libpthread.so.0                                                                                                              
#12 0xb5e8ad4e in clone () from /lib/i686/libc.so.6                                                                                                                           

Thread 14 (Thread 0xb04e6b90 (LWP 18864)):
#0  0xffffe424 in __kernel_vsyscall ()    
#1  0xb5e802d7 in poll () from /lib/i686/libc.so.6
#2  0xb686929a in jack_client_core_wait () from /usr/lib/libjack.so.0
#3  0xb04e62e8 in ?? ()                                              
#4  0xb5e802ed in poll () from /lib/i686/libc.so.6                   
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Thread 13 (Thread 0xaece1b90 (LWP 18492)):
#0  0xffffe424 in __kernel_vsyscall ()    
#1  0xb6853b95 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/libpthread.so.0
#2  0xb686aae4 in mb_thread_func () from /usr/lib/libjack.so.0                    
#3  0xaece1b90 in ?? ()                                                           
#4  0x00000000 in ?? ()                                                           

Thread 7 (Thread 0xafce5b90 (LWP 18473)):
#0  0xffffe424 in __kernel_vsyscall ()   
#1  0xb6853ec2 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/i686/libpthread.so.0
#2  0xb747cf50 in g_cond_timed_wait_posix_impl (cond=0xa0b2560, entered_mutex=0x80, abs_time=0x1) at gthread-posix.c:242
#3  0xb73c0e74 in g_async_queue_pop_intern_unlocked (queue=0x9fd2300, try=<value optimized out>, end_time=0xafce5314) at gasyncqueue.c:365
#4  0xb73c0f7e in IA__g_async_queue_timed_pop (queue=0x9fd2300, end_time=0xafce5314) at gasyncqueue.c:491                                 
#5  0xb7413d45 in g_thread_pool_thread_proxy (data=0x9fd2288) at gthreadpool.c:121                                                        
#6  0xb7412724 in g_thread_create_proxy (data=0x9fe0180) at gthread.c:635                                                                 
#7  0xb6850315 in start_thread () from /lib/i686/libpthread.so.0                                                                          
#8  0xb5e8ad4e in clone () from /lib/i686/libc.so.6                                                                                       

Thread 4 (Thread 0xb4285b90 (LWP 18460)):
#0  0xffffe424 in __kernel_vsyscall ()   
#1  0xb6853b95 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/libpthread.so.0
#2  0xb7379bbd in Glib::Cond::wait (this=0x9e42ea0, mutex=@0xb7f1d67c) at libs/glibmm2/glib/glibmm/thread.cc:367
---Type <return> to continue, or q <return> to quit---                                                          
#3  0xb7b47a55 in ARDOUR::Analyser::work () at libs/ardour/analyser.cc:85                                       
#4  0xb7b47be4 in analyser_work () at libs/ardour/analyser.cc:49                                                
#5  0x08928185 in sigc::pointer_functor0<void>::operator() (this=0x9e2b1fc) at libs/sigc++2/sigc++/functors/ptr_fun.h:77
#6  0x0892819c in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x9e2b1f8) at libs/sigc++2/sigc++/adaptors/adaptor_trait.h:251
#7  0x089281b8 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x9e2b1e0) at libs/sigc++2/sigc++/functors/slot.h:103   
#8  0x084a0fda in sigc::slot0<void>::operator() (this=0x9e51118) at libs/sigc++2/sigc++/functors/slot.h:440                                            
#9  0xb737a63f in call_thread_entry_slot (data=0x9e51118) at libs/glibmm2/glib/glibmm/thread.cc:46                                                     
#10 0xb7412724 in g_thread_create_proxy (data=0x9e42f40) at gthread.c:635                                                                              
#11 0xb6850315 in start_thread () from /lib/i686/libpthread.so.0                                                                                       
#12 0xb5e8ad4e in clone () from /lib/i686/libc.so.6                                                                                                    

Thread 3 (Thread 0xb4a86b90 (LWP 18459)):
#0  0xffffe424 in __kernel_vsyscall ()   
#1  0xb6853b95 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/libpthread.so.0
#2  0xb7379bbd in Glib::Cond::wait (this=0x9e51148, mutex=@0xb7f1dcbc) at libs/glibmm2/glib/glibmm/thread.cc:367
#3  0xb7e29918 in peak_thread_work () at libs/ardour/source_factory.cc:63                                       
#4  0x08928185 in sigc::pointer_functor0<void>::operator() (this=0x9e435c4) at libs/sigc++2/sigc++/functors/ptr_fun.h:77
#5  0x0892819c in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x9e435c0) at libs/sigc++2/sigc++/adaptors/adaptor_trait.h:251
#6  0x089281b8 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x9e435a8) at libs/sigc++2/sigc++/functors/slot.h:103
#7  0x084a0fda in sigc::slot0<void>::operator() (this=0x9e2c0d0) at libs/sigc++2/sigc++/functors/slot.h:440
#8  0xb737a63f in call_thread_entry_slot (data=0x9e2c0d0) at libs/glibmm2/glib/glibmm/thread.cc:46
#9  0xb7412724 in g_thread_create_proxy (data=0x9e434f8) at gthread.c:635
#10 0xb6850315 in start_thread () from /lib/i686/libpthread.so.0
#11 0xb5e8ad4e in clone () from /lib/i686/libc.so.6

Thread 2 (Thread 0xb5287b90 (LWP 18458)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb6853b95 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i686/libpthread.so.0
#2  0xb7379bbd in Glib::Cond::wait (this=0x9e51148, mutex=@0xb7f1dcbc) at libs/glibmm2/glib/glibmm/thread.cc:367
#3  0xb7e29918 in peak_thread_work () at libs/ardour/source_factory.cc:63
#4  0x08928185 in sigc::pointer_functor0<void>::operator() (this=0x9e4300c) at libs/sigc++2/sigc++/functors/ptr_fun.h:77
#5  0x0892819c in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x9e43008) at libs/sigc++2/sigc++/adaptors/adaptor_trait.h:251
#6  0x089281b8 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x9e42ff0) at libs/sigc++2/sigc++/functors/slot.h:103
#7  0x084a0fda in sigc::slot0<void>::operator() (this=0x9e42fb8) at libs/sigc++2/sigc++/functors/slot.h:440
#8  0xb737a63f in call_thread_entry_slot (data=0x9e42fb8) at libs/glibmm2/glib/glibmm/thread.cc:46
#9  0xb7412724 in g_thread_create_proxy (data=0x9e432d8) at gthread.c:635
#10 0xb6850315 in start_thread () from /lib/i686/libpthread.so.0
#11 0xb5e8ad4e in clone () from /lib/i686/libc.so.6

Thread 1 (Thread 0xb5712720 (LWP 18453)):
#0  0xffffe424 in __kernel_vsyscall ()
#1  0xb5ddbda0 in raise () from /lib/i686/libc.so.6
#2  0xb5ddd808 in abort () from /lib/i686/libc.so.6
#3  0xb5dd4cde in __assert_fail () from /lib/i686/libc.so.6
#4  0xb670dbd4 in Note (this=0xa97d858, chan=0 '\0', t=0.76208333333333333, l=2.3382499999999999, n=66 'B', v=64 '@') at libs/evoral/src/Note.cpp:41
#5  0x0883cdf9 in MidiRegionView::create_note_at (this=0xa6a50e0, x=88, y=238.08333333333334, length=2.3382499999999999) at gtk2_ardour/midi_region_view.cc:450
#6  0x0883e15c in MidiRegionView::canvas_event (this=0xa6a50e0, ev=0xa95fc70) at gtk2_ardour/midi_region_view.cc:410
#7  0x0884353e in sigc::bound_mem_functor1<bool, MidiRegionView, _GdkEvent*>::operator() (this=0xa78603c, _A_a1=@0xbff36ef4) at libs/sigc++2/sigc++/functors/mem_fun.h:1851
#8  0x0884355b in sigc::adaptor_functor<sigc::bound_mem_functor1<bool, MidiRegionView, _GdkEvent*> >::operator()<_GdkEvent* const&> (this=0xa786038, _A_arg1=@0xbff36ef4) at libs/sigc++2/sigc++/adaptors/adaptor_trait.h:84
#9  0x0884357e in sigc::internal::slot_call1<sigc::bound_mem_functor1<bool, MidiRegionView, _GdkEvent*>, bool, _GdkEvent*>::call_it (rep=0xa786020, a_1=@0xbff36ef4) at libs/sigc++2/sigc++/functors/slot.h:137
#10 0xb6affda5 in sigc::slot1<bool, _GdkEvent*>::operator() (this=0xa6de8d4, _A_a1=@0xbff36ef4) at libs/sigc++2/sigc++/functors/slot.h:515
#11 0xb67dc7b5 in Item_signal_event_callback (self=0xa6a1c30, p0=0xa95fc70, data=0xa6de8d0) at libs/libgnomecanvasmm/libgnomecanvasmm/item.cc:138
#12 0xb683b242 in gnome_canvas_marshal_BOOLEAN__BOXED () from /usr/lib/libgnomecanvas-2.so.0
#13 0xb748e2f8 in IA__g_closure_invoke (closure=0xa6dd4d8, return_value=0xbff37070, n_param_values=2, param_values=0xa097200, invocation_hint=0xbff3705c) at gclosure.c:767
#14 0xb74a4e88 in signal_emit_unlocked_R (node=0xa1bef80, detail=0, instance=0xa6a1c30, emission_return=0xbff371a8, instance_and_params=0xa097200) at gsignal.c:3244
#15 0xb74a6401 in IA__g_signal_emit_valist (instance=0xa6a1c30, signal_id=339, detail=0, var_args=0xbff37200 "(r��\200�\225\n\210�\225\nt�J��\026G�(r�� �\225\n�\231J� \220\037\n \220\037\n") at gsignal.c:2987
#16 0xb74a69b7 in IA__g_signal_emit (instance=0xa6a1c30, signal_id=339, detail=0) at gsignal.c:3034
#17 0xb68366d6 in ?? () from /usr/lib/libgnomecanvas-2.so.0
#18 0xb683944c in ?? () from /usr/lib/libgnomecanvas-2.so.0
#19 0xb6af8c8b in Gtk::Widget_Class::button_release_event_callback (self=0xa1f9020, p0=0xa95fc20) at libs/gtkmm2/gtk/gtkmm/widget.cc:4419
#20 0xb70786f2 in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#21 0xb748c96e in g_type_class_meta_marshal (closure=0x9c51078, return_value=0xbff37460, n_param_values=2, param_values=0xa0970f0, invocation_hint=0xbff3744c, marshal_data=0xb4) at gclosure.c:878
---Type <return> to continue, or q <return> to quit---
#22 0xb748e2f8 in IA__g_closure_invoke (closure=0x9c51078, return_value=0xbff37460, n_param_values=2, param_values=0xa0970f0, invocation_hint=0xbff3744c) at gclosure.c:767
#23 0xb74a4b19 in signal_emit_unlocked_R (node=0x9c515a0, detail=0, instance=0xa1f9020, emission_return=0xbff37598, instance_and_params=0xa0970f0) at gsignal.c:3282
#24 0xb74a6401 in IA__g_signal_emit_valist (instance=0xa1f9020, signal_id=31, detail=0, var_args=0xbff375f0 "\bv�� �\225\n \220\037\n��\031� \220\037\n\200��\t") at gsignal.c:2987
#25 0xb74a69b7 in IA__g_signal_emit (instance=0xa1f9020, signal_id=31, detail=0) at gsignal.c:3034
#26 0xb719604b in ?? () from /usr/lib/libgtk-x11-2.0.so.0
#27 0xb7070c47 in gtk_propagate_event () from /usr/lib/libgtk-x11-2.0.so.0
#28 0xb7072020 in gtk_main_do_event () from /usr/lib/libgtk-x11-2.0.so.0
#29 0xb6efe798 in ?? () from /usr/lib/libgdk-x11-2.0.so.0
#30 0xb73e77ca in IA__g_main_context_dispatch (context=0x9c3bc40) at gmain.c:2142
#31 0xb73eaee8 in g_main_context_iterate (context=0x9c3bc40, block=1, dispatch=1, self=0x9c10e48) at gmain.c:2776
#32 0xb73eb3fb in IA__g_main_loop_run (loop=0x9c1f1d8) at gmain.c:2984
#33 0xb707249f in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0
#34 0xb6b05801 in Gtk::Main::run_impl (this=0x9c22338) at libs/gtkmm2/gtk/gtkmm/main.cc:534
#35 0xb6b0561c in Gtk::Main::run () at libs/gtkmm2/gtk/gtkmm/main.cc:481
#36 0xb68f45bf in Gtkmm2ext::UI::run (this=0x9c1f6c0, old_receiver=@0x8bcfd4c) at libs/gtkmm2ext/gtk_ui.cc:226
#37 0x088246b6 in main (argc=1, argv=0xbff37964) at gtk2_ardour/main.cc:375
(gdb)