Thread 18 (Thread 0x7fe653958700 (LWP 4331)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fe65f198524 in g_cond_wait () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #2 0x00007fe6619c35f9 in peak_thread_work () at ../libs/ardour/source_factory.cc:71 #3 0x0000000000ca3b31 in sigc::pointer_functor0::operator() (this=0x20ee748) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77 #4 0x0000000000ca0fdc in sigc::adaptor_functor >::operator() (this=0x20ee740) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251 #5 0x0000000000c9d569 in sigc::internal::slot_call0, void>::call_it (rep=0x20ee710) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103 #6 0x00007fe65f6d6b72 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglibmm-2.4.so.1 #7 0x00007fe65f1777f5 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #8 0x00007fe65af5d6aa in start_thread (arg=0x7fe653958700) at pthread_create.c:333 #9 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 17 (Thread 0x7fe632ffd700 (LWP 4364)): #0 0x00007fe65af6653d in nanosleep () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007fe65f179298 in g_usleep () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #2 0x00007fe66157b812 in ARDOUR::AutomationWatch::thread (this=0x36baa30) at ../libs/ardour/automation_watch.cc:153 #3 0x00007fe66157ec8d in boost::_mfi::mf0::operator() (this=0x2fa6ad0, p=0x36baa30) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/mem_fn_template.hpp:49 #4 0x00007fe66157e8d0 in boost::_bi::list1 >::operator(), boost::_bi::list0> (this=0x2fa6ae0, f=..., a=...) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/bind.hpp:253 #5 0x00007fe66157e4cb in boost::_bi::bind_t, boost::_bi::list1 > >::operator() ( this=0x2fa6ad0) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/bind_template.hpp:20 #6 0x00007fe66157e456 in sigc::adaptor_functor, boost::_bi::list1 > > >::operator() (this=0x2fa6ad0) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251 #7 0x00007fe66157e056 in sigc::internal::slot_call0, boost::_bi::list1 > >, void>::call_it (rep=0x2fa6aa0) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103 #8 0x00007fe65f6d6b72 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglibmm-2.4.so.1 #9 0x00007fe65f1777f5 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #10 0x00007fe65af5d6aa in start_thread (arg=0x7fe632ffd700) at pthread_create.c:333 #11 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 16 (Thread 0x7fe6317fa700 (LWP 4363)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fe661953f44 in ARDOUR::Session::emit_thread_run (this=0x24d6730) at ../libs/ardour/session_process.cc:1313 #2 0x00007fe661953eee in ARDOUR::Session::emit_thread (arg=0x24d6730) at ../libs/ardour/session_process.cc:1302 #3 0x00007fe65af5d6aa in start_thread (arg=0x7fe6317fa700) at pthread_create.c:333 #4 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 15 (Thread 0x7fe6510ac700 (LWP 4335)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fe65f198524 in g_cond_wait () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #2 0x00007fe66151fe45 in ARDOUR::AudioEngine::do_devicelist_update (this=0x20f77e0) at ../libs/ardour/audioengine.cc:537 #3 0x00007fe66152d235 in boost::_mfi::mf0::operator() (this=0x20dce30, p=0x20f77e0) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/mem_fn_template.hpp:49 #4 0x00007fe66152ce44 in boost::_bi::list1 >::operator(), boost::_bi::list0> (this=0x20dce40, f=..., a=...) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/bind.hpp:253 #5 0x00007fe66152c745 in boost::_bi::bind_t, boost::_bi::list1 > >::operator() (this=0x20dce30) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/bind_template.hpp:20 #6 0x00007fe66152bf32 in sigc::adaptor_functor, boost::_bi::list1 > > >::operator() (this=0x20dce30) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251 #7 0x00007fe66152b15a in sigc::internal::slot_call0, boost::_bi::list1 > >, void>::call_it (rep=0x20dce00) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103 #8 0x00007fe65f6d6b72 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglibmm-2.4.so.1 #9 0x00007fe65f1777f5 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #10 0x00007fe65af5d6aa in start_thread (arg=0x7fe6510ac700) at pthread_create.c:333 #11 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 14 (Thread 0x7fe6518ad700 (LWP 4334)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fe65f198524 in g_cond_wait () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #2 0x00007fe66151fbff in ARDOUR::AudioEngine::do_reset_backend (this=0x20f77e0) at ../libs/ardour/audioengine.cc:502 #3 0x00007fe66152d235 in boost::_mfi::mf0::operator() (this=0x20dcde0, p=0x20f77e0) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/mem_fn_template.hpp:49 #4 0x00007fe66152ce44 in boost::_bi::list1 >::operator(), boost::_bi::list0> (this=0x20dcdf0, f=..., a=...) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/bind.hpp:253 #5 0x00007fe66152c745 in boost::_bi::bind_t, boost::_bi::list1 > >::operator() (this=0x20dcde0) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/bind_template.hpp:20 #6 0x00007fe66152bf32 in sigc::adaptor_functor, boost::_bi::list1 > > >::operator() (this=0x20dcde0) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251 #7 0x00007fe66152b15a in sigc::internal::slot_call0, boost::_bi::list1 > >, void>::call_it (rep=0x20dcdb0) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103 #8 0x00007fe65f6d6b72 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglibmm-2.4.so.1 #9 0x00007fe65f1777f5 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #10 0x00007fe65af5d6aa in start_thread (arg=0x7fe6518ad700) at pthread_create.c:333 #11 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 13 (Thread 0x7fe652956700 (LWP 4333)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fe65f198524 in g_cond_wait () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #2 0x00007fe6614c790f in ARDOUR::Analyser::work () at ../libs/ardour/analyser.cc:85 #3 0x00007fe6614c76a5 in analyser_work () at ../libs/ardour/analyser.cc:50 #4 0x0000000000ca3b31 in sigc::pointer_functor0::operator() (this=0x208ac08) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77 #5 0x0000000000ca0fdc in sigc::adaptor_functor >::operator() (this=0x208ac00) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251 #6 0x0000000000c9d569 in sigc::internal::slot_call0, void>::call_it (rep=0x208abd0) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103 #7 0x00007fe65f6d6b72 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglibmm-2.4.so.1 #8 0x00007fe65f1777f5 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #9 0x00007fe65af5d6aa in start_thread (arg=0x7fe652956700) at pthread_create.c:333 #10 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 12 (Thread 0x7fe654159700 (LWP 4330)): #0 0x00007fe65af6653d in nanosleep () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007fe65f179298 in g_usleep () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #2 0x0000000000fc9630 in gui_event_loop (ptr=0x0) at ../gtk2_ardour/linux_vst_gui_support.cc:476 #3 0x00007fe65af5d6aa in start_thread (arg=0x7fe654159700) at pthread_create.c:333 #4 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 11 (Thread 0x7fe64221b700 (LWP 4355)): #0 0x00007fe657f688dd in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007fe643873f96 in jack_cycle_wait () from /usr/lib/x86_64-linux-gnu/libjack.so.0 #2 0x00007fe643af3768 in WJACK_cycle_wait (client=0x24e68f0) at ../libs/backends/jack/weak_libjack.def:78 #3 0x00007fe643ad6a00 in ARDOUR::JACKAudioBackend::process_thread (this=0x2223000) at ../libs/backends/jack/jack_audiobackend.cc:937 #4 0x00007fe643ad69a0 in ARDOUR::JACKAudioBackend::_process_thread (arg=0x2223000) at ../libs/backends/jack/jack_audiobackend.cc:916 #5 0x00007fe643874347 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0 #6 0x00007fe65af5d6aa in start_thread (arg=0x7fe64221b700) at pthread_create.c:333 #7 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 10 (Thread 0x7fe6336fb800 (LWP 4361)): #0 0x00007fe657f688dd in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007fe6602d8871 in CrossThreadChannel::poll_for_request (this=0x24d63b0) at ../libs/pbd/crossthread.posix.cc:80 #2 0x00007fe6602d88d9 in CrossThreadChannel::receive (this=0x24d63b0, msg=@0x7fe6336fa8bf: 0 '\000', wait=true) at ../libs/pbd/crossthread.posix.cc:101 #3 0x00007fe6615902ba in ARDOUR::Butler::thread_work (this=0x24d6320) at ../libs/ardour/butler.cc:175 #4 0x00007fe66158ff5d in ARDOUR::Butler::_thread_work (arg=0x24d6320) at ../libs/ardour/butler.cc:156 #5 0x00007fe6602f169a in fake_thread_start (arg=0x2db2060) at ../libs/pbd/pthread_utils.cc:93 #6 0x00007fe65af5d6aa in start_thread (arg=0x7fe6336fb800) at pthread_create.c:333 #7 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 9 (Thread 0x7fe653157700 (LWP 4332)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fe65f198524 in g_cond_wait () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #2 0x00007fe6619c35f9 in peak_thread_work () at ../libs/ardour/source_factory.cc:71 #3 0x0000000000ca3b31 in sigc::pointer_functor0::operator() (this=0x20da9a8) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77 #4 0x0000000000ca0fdc in sigc::adaptor_functor >::operator() (this=0x20da9a0) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251 #5 0x0000000000c9d569 in sigc::internal::slot_call0, void>::call_it (rep=0x20da970) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103 #6 0x00007fe65f6d6b72 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglibmm-2.4.so.1 #7 0x00007fe65f1777f5 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #8 0x00007fe65af5d6aa in start_thread (arg=0x7fe653157700) at pthread_create.c:333 #9 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 8 (Thread 0x7fe60ffff700 (LWP 4368)): #0 std::min (__a=@0x7fe60fffe708: -3.61204184e-05, __b=@0x7fe61e5dd2b0: -3.54051626e-05) at /usr/include/c++/4.4/bits/stl_algobase.h:193 #1 0x00007fe661552bf4 in ARDOUR::AudioSource::read_peaks_with_fpp (this=0x2470410, peaks=0x7fe6029bffe0, npeaks=1153, start=459523125, cnt=23346123, samples_per_visual_peak=20250, samples_per_file_peak=256) at ../libs/ardour/audiosource.cc:605 #2 0x00007fe66155151d in ARDOUR::AudioSource::read_peaks (this=0x2470410, peaks=0x7fe6029bffe0, npeaks=1153, start=459523125, cnt=23346123, samples_per_visual_peak=20250) at ../libs/ardour/audiosource.cc:336 #3 0x00007fe66153e08a in ARDOUR::AudioRegion::read_peaks (this=0x52b5000, buf=0x7fe6029bffe0, npeaks=1153, offset=459523125, cnt=23346123, chan_n=0, frames_per_pixel=20250) at ../libs/ardour/audioregion.cc:433 #4 0x00007fe66263a0ec in ArdourCanvas::WaveView::generate_image (this=0x362fc80, req=..., in_render_thread=true) at ../libs/canvas/wave_view.cc:987 #5 0x00007fe66263c207 in ArdourCanvas::WaveView::drawing_thread () at ../libs/canvas/wave_view.cc:1566 #6 0x0000000000ca3b31 in sigc::pointer_functor0::operator() (this=0x3ffcc48) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77 #7 0x0000000000ca0fdc in sigc::adaptor_functor >::operator() (this=0x3ffcc40) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251 #8 0x0000000000c9d569 in sigc::internal::slot_call0, void>::call_it (rep=0x3ffcc10) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103 #9 0x00007fe65f6d6b72 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglibmm-2.4.so.1 #10 0x00007fe65f1777f5 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #11 0x00007fe65af5d6aa in start_thread (arg=0x7fe60ffff700) at pthread_create.c:333 #12 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 7 (Thread 0x7fe642b6e700 (LWP 4343)): #0 0x00007fe657f688dd in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007fe65f14caa5 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #2 0x00007fe65f14ccc7 in g_main_context_iteration () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #3 0x00007fe65f14cd19 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #4 0x00007fe65f1777f5 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #5 0x00007fe65af5d6aa in start_thread (arg=0x7fe642b6e700) at pthread_create.c:333 #6 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 6 (Thread 0x7fe633fff700 (LWP 4352)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185 #1 0x00007fe6438759a3 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0 #2 0x00007fe65af5d6aa in start_thread (arg=0x7fe633fff700) at pthread_create.c:333 #3 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 5 (Thread 0x7fe6401e5700 (LWP 4359)): #0 0x00007fe65af650c9 in futex_abstimed_wait (cancel=true, private=, abstime=0x0, expected=0, futex=0x2950d30) at sem_waitcommon.c:42 #1 do_futex_wait (sem=sem@entry=0x2950d30, abstime=0x0) at sem_waitcommon.c:208 #2 0x00007fe65af65164 in __new_sem_wait_slow (sem=0x2950d30, abstime=0x0) at sem_waitcommon.c:277 #3 0x00007fe65af6520a in __new_sem_wait (sem=) at sem_wait.c:28 #4 0x00007fe6616868ae in PBD::ProcessSemaphore::wait (this=0x2950d30) at /home/ardour/linux-x86_64/ardour/libs/pbd/pbd/semutils.h:56 #5 0x00007fe661684824 in ARDOUR::Graph::run_one (this=0x2950c80) at ../libs/ardour/graph.cc:387 #6 0x00007fe661684bc6 in ARDOUR::Graph::helper_thread (this=0x2950c80) at ../libs/ardour/graph.cc:418 #7 0x00007fe66168ad91 in boost::_mfi::mf0::operator() (this=0x7fe6401e4d58, p=0x2950c80) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/mem_fn_template.hpp:49 #8 0x00007fe66168a5a6 in boost::_bi::list1 >::operator(), boost::_bi::list0> (this=0x7fe6401e4d68, f=..., a=...) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/bind.hpp:253 #9 0x00007fe661689bc5 in boost::_bi::bind_t, boost::_bi::list1 > >::operator() (this=0x7fe6401e4d58) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/bind_template.hpp:20 #10 0x00007fe6616895bb in boost::detail::function::void_function_obj_invoker0, boost::_bi::list1 > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64/gtk/inst/include/boost/function/function_template.hpp:153 #11 0x00000000005e3ee3 in boost::function0::operator() (this=0x7fe6401e4d50) at /home/ardour/linux-x86_64/gtk/inst/include/boost/function/function_template.hpp:760 #12 0x00007fe643ad694b in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x2961200) at ../libs/backends/jack/jack_audiobackend.cc:908 #13 0x00007fe65af5d6aa in start_thread (arg=0x7fe6401e5700) at pthread_create.c:333 #14 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 4 (Thread 0x7fe6327fc700 (LWP 4362)): #0 0x00007fe657f688dd in poll () at ../sysdeps/unix/syscall-template.S:81 #1 0x00007fe65f14caa5 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #2 0x00007fe65f14cbb5 in g_main_loop_run () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #3 0x00007fe6602c1e29 in BaseUI::main_thread (this=0x2db2320) at ../libs/pbd/base_ui.cc:86 #4 0x00007fe6602c5a4b in sigc::bound_mem_functor0::operator() (this=0x2db2ac8) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787 #5 0x00007fe6602c578c in sigc::adaptor_functor >::operator() (this=0x2db2ac0) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:251 #6 0x00007fe6602c52a5 in sigc::internal::slot_call0, void>::call_it (rep=0x2db2a90) at /home/ardour/linux-x86_64/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103 #7 0x00007fe65f6d6b72 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglibmm-2.4.so.1 #8 0x00007fe65f1777f5 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #9 0x00007fe65af5d6aa in start_thread (arg=0x7fe6327fc700) at pthread_create.c:333 #10 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 3 (Thread 0x7fe640266700 (LWP 4358)): #0 0x00007fe65af650c9 in futex_abstimed_wait (cancel=true, private=, abstime=0x0, expected=0, futex=0x2950d30) at sem_waitcommon.c:42 #1 do_futex_wait (sem=sem@entry=0x2950d30, abstime=0x0) at sem_waitcommon.c:208 #2 0x00007fe65af65164 in __new_sem_wait_slow (sem=0x2950d30, abstime=0x0) at sem_waitcommon.c:277 #3 0x00007fe65af6520a in __new_sem_wait (sem=) at sem_wait.c:28 #4 0x00007fe6616868ae in PBD::ProcessSemaphore::wait (this=0x2950d30) at /home/ardour/linux-x86_64/ardour/libs/pbd/pbd/semutils.h:56 #5 0x00007fe661684824 in ARDOUR::Graph::run_one (this=0x2950c80) at ../libs/ardour/graph.cc:387 #6 0x00007fe661684f87 in ARDOUR::Graph::main_thread (this=0x2950c80) at ../libs/ardour/graph.cc:456 #7 0x00007fe66168ad91 in boost::_mfi::mf0::operator() (this=0x7fe640265d58, p=0x2950c80) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/mem_fn_template.hpp:49 #8 0x00007fe66168a5a6 in boost::_bi::list1 >::operator(), boost::_bi::list0> (this=0x7fe640265d68, f=..., a=...) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/bind.hpp:253 #9 0x00007fe661689bc5 in boost::_bi::bind_t, boost::_bi::list1 > >::operator() (this=0x7fe640265d58) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/bind_template.hpp:20 #10 0x00007fe6616895bb in boost::detail::function::void_function_obj_invoker0, boost::_bi::list1 > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64/gtk/inst/include/boost/function/function_template.hpp:153 #11 0x00000000005e3ee3 in boost::function0::operator() (this=0x7fe640265d50) at /home/ardour/linux-x86_64/gtk/inst/include/boost/function/function_template.hpp:760 #12 0x00007fe643ad694b in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x2960ef0) at ../libs/backends/jack/jack_audiobackend.cc:908 #13 0x00007fe65af5d6aa in start_thread (arg=0x7fe640266700) at pthread_create.c:333 #14 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 2 (Thread 0x7fe640164700 (LWP 4360)): #0 0x00007fe65af650c9 in futex_abstimed_wait (cancel=true, private=, abstime=0x0, expected=0, futex=0x2950d50) at sem_waitcommon.c:42 #1 do_futex_wait (sem=sem@entry=0x2950d50, abstime=0x0) at sem_waitcommon.c:208 #2 0x00007fe65af65164 in __new_sem_wait_slow (sem=0x2950d50, abstime=0x0) at sem_waitcommon.c:277 #3 0x00007fe65af6520a in __new_sem_wait (sem=) at sem_wait.c:28 #4 0x00007fe6616868ae in PBD::ProcessSemaphore::wait (this=0x2950d50) at /home/ardour/linux-x86_64/ardour/libs/pbd/pbd/semutils.h:56 #5 0x00007fe661683b81 in ARDOUR::Graph::restart_cycle (this=0x2950c80) at ../libs/ardour/graph.cc:261 #6 0x00007fe661683b4b in ARDOUR::Graph::dec_ref (this=0x2950c80) at ../libs/ardour/graph.cc:248 #7 0x00007fe66168ba04 in ARDOUR::GraphNode::finish (this=0x2c4a580, chain=1) at ../libs/ardour/graphnode.cc:71 #8 0x00007fe661684a1e in ARDOUR::Graph::run_one (this=0x2950c80) at ../libs/ardour/graph.cc:401 #9 0x00007fe661684bc6 in ARDOUR::Graph::helper_thread (this=0x2950c80) at ../libs/ardour/graph.cc:418 #10 0x00007fe66168ad91 in boost::_mfi::mf0::operator() (this=0x7fe640163d58, p=0x2950c80) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/mem_fn_template.hpp:49 #11 0x00007fe66168a5a6 in boost::_bi::list1 >::operator(), boost::_bi::list0> (this=0x7fe640163d68, f=..., a=...) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/bind.hpp:253 #12 0x00007fe661689bc5 in boost::_bi::bind_t, boost::_bi::list1 > >::operator() (this=0x7fe640163d58) at /home/ardour/linux-x86_64/gtk/inst/include/boost/bind/bind_template.hpp:20 #13 0x00007fe6616895bb in boost::detail::function::void_function_obj_invoker0, boost::_bi::list1 > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64/gtk/inst/include/boost/function/function_template.hpp:153 #14 0x00000000005e3ee3 in boost::function0::operator() (this=0x7fe640163d50) at /home/ardour/linux-x86_64/gtk/inst/include/boost/function/function_template.hpp:760 #15 0x00007fe643ad694b in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x2961510) at ../libs/backends/jack/jack_audiobackend.cc:908 #16 0x00007fe65af5d6aa in start_thread (arg=0x7fe640164700) at pthread_create.c:333 #17 0x00007fe657f73eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109 Thread 1 (Thread 0x7fe662ea38c0 (LWP 4321)): #0 0x00007fe657ea2267 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55 #1 0x00007fe657ea3eca in __GI_abort () at abort.c:89 #2 0x00007fe657e9b03d in __assert_fail_base (fmt=0x7fe657ffd028 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x7fe65db248e0 "((*&(&surface->ref_count)->ref_count) > 0)", file=file@entry=0x7fe65db24828 "cairo-surface.c", line=line@entry=928, function=function@entry=0x7fe65db26210 "cairo_surface_reference") at assert.c:92 #3 0x00007fe657e9b0f2 in __GI___assert_fail (assertion=0x7fe65db248e0 "((*&(&surface->ref_count)->ref_count) > 0)", file=0x7fe65db24828 "cairo-surface.c", line=928, function=0x7fe65db26210 "cairo_surface_reference") at assert.c:101 #4 0x00007fe65daad6c1 in cairo_surface_reference () from /opt/Ardour-4.4.143-dbg/lib/libcairo.so.2 #5 0x00007fe65da8fa7b in cairo_pattern_create_for_surface () from /opt/Ardour-4.4.143-dbg/lib/libcairo.so.2 #6 0x00007fe65da56b6c in ?? () from /opt/Ardour-4.4.143-dbg/lib/libcairo.so.2 #7 0x00007fe65da4e587 in cairo_set_source_surface () from /opt/Ardour-4.4.143-dbg/lib/libcairo.so.2 #8 0x00007fe65b699d64 in Cairo::Context::set_source(Cairo::RefPtr const&, double, double) () from /opt/Ardour-4.4.143-dbg/lib/libcairomm-1.0.so.1 #9 0x00007fe66263b3cc in ArdourCanvas::WaveView::render (this=0x4129130, area=..., context=...) at ../libs/canvas/wave_view.cc:1234 #10 0x00007fe66260e884 in ArdourCanvas::Item::render_children (this=0x40f0e10, area=..., context=...) at ../libs/canvas/item.cc:800 #11 0x00007fe66260492d in ArdourCanvas::Container::render (this=0x40f0e10, area=..., context=...) at ../libs/canvas/container.cc:43 #12 0x00007fe66260e884 in ArdourCanvas::Item::render_children (this=0x398e030, area=..., context=...) at ../libs/canvas/item.cc:800 #13 0x00007fe66260492d in ArdourCanvas::Container::render (this=0x398e030, area=..., context=...) at ../libs/canvas/container.cc:43 #14 0x00007fe66260e884 in ArdourCanvas::Item::render_children (this=0x36455e0, area=..., context=...) at ../libs/canvas/item.cc:800 #15 0x00007fe66260492d in ArdourCanvas::Container::render (this=0x36455e0, area=..., context=...) at ../libs/canvas/container.cc:43 #16 0x00007fe66260e884 in ArdourCanvas::Item::render_children (this=0x28a55c0, area=..., context=...) at ../libs/canvas/item.cc:800 #17 0x00007fe66260492d in ArdourCanvas::Container::render (this=0x28a55c0, area=..., context=...) at ../libs/canvas/container.cc:43 #18 0x00007fe66260e884 in ArdourCanvas::Item::render_children (this=0x2902c70, area=..., context=...) at ../libs/canvas/item.cc:800 #19 0x00007fe66260492d in ArdourCanvas::Container::render (this=0x2902c70, area=..., context=...) at ../libs/canvas/container.cc:43 #20 0x00007fe66262bb1c in ArdourCanvas::ScrollGroup::render (this=0x2902c70, area=..., context=...) at ../libs/canvas/scroll_group.cc:67 #21 0x00007fe66260e884 in ArdourCanvas::Item::render_children (this=0x29a1d90, area=..., context=...) at ../libs/canvas/item.cc:800 #22 0x00007fe66260492d in ArdourCanvas::Container::render (this=0x29a1d90, area=..., context=...) at ../libs/canvas/container.cc:43 #23 0x00007fe6625f1758 in ArdourCanvas::Canvas::render (this=0x29a1d78, area=..., context=...) at ../libs/canvas/canvas.cc:121 #24 0x00007fe6625f5b67 in ArdourCanvas::GtkCanvas::on_expose_event (this=0x29a1d78, ev=0x7fffed97eb20) at ../libs/canvas/canvas.cc:814 #25 0x00007fe65c681bd3 in Gtk::Widget_Class::expose_event_callback(_GtkWidget*, _GdkEventExpose*) () from /opt/Ardour-4.4.143-dbg/lib/libgtkmm-2.4.so.1 #26 0x00007fe65e5b9f38 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libgtk-x11-2.0.so.0 #27 0x00007fe65f44f1e2 in g_closure_invoke () from /opt/Ardour-4.4.143-dbg/lib/libgobject-2.0.so.0 #28 0x00007fe65f466272 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libgobject-2.0.so.0 #29 0x00007fe65f466f98 in g_signal_emit_valist () from /opt/Ardour-4.4.143-dbg/lib/libgobject-2.0.so.0 #30 0x00007fe65f4677e3 in g_signal_emit () from /opt/Ardour-4.4.143-dbg/lib/libgobject-2.0.so.0 #31 0x00007fe65e710d8f in ?? () from /opt/Ardour-4.4.143-dbg/lib/libgtk-x11-2.0.so.0 #32 0x00007fe65e5b4027 in gtk_main_do_event () from /opt/Ardour-4.4.143-dbg/lib/libgtk-x11-2.0.so.0 #33 0x00007fe65e1d7782 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libgdk-x11-2.0.so.0 #34 0x00007fe65e1d772f in ?? () from /opt/Ardour-4.4.143-dbg/lib/libgdk-x11-2.0.so.0 #35 0x00007fe65e1d0554 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libgdk-x11-2.0.so.0 #36 0x00007fe65e1d08b9 in gdk_window_process_all_updates () from /opt/Ardour-4.4.143-dbg/lib/libgdk-x11-2.0.so.0 #37 0x00007fe65e1d0929 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libgdk-x11-2.0.so.0 #38 0x00007fe65e19dde6 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libgdk-x11-2.0.so.0 #39 0x00007fe65f14ac95 in g_main_context_dispatch () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #40 0x00007fe65f14cb08 in ?? () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #41 0x00007fe65f14cbb5 in g_main_loop_run () from /opt/Ardour-4.4.143-dbg/lib/libglib-2.0.so.0 #42 0x00007fe65e5b3657 in gtk_main () from /opt/Ardour-4.4.143-dbg/lib/libgtk-x11-2.0.so.0 #43 0x00007fe66229b06d in Gtkmm2ext::UI::run (this=0x20b6dc0, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:280 #44 0x0000000000a701d7 in main (argc=1, argv=0x7fffed97f158) at ../gtk2_ardour/main.cc:396 quit