colinf@starling-thinkstation:~/src/ardour/ardour/gtk2_ardour$ ./ardbg
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Reading symbols from ./../build/gtk2_ardour/ardour-5.8.279...done.
(gdb) core-file core 
[New LWP 2627]
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[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `./../build/gtk2_ardour/ardour-5.8.279'.
Program terminated with signal SIGABRT, Aborted.
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
51	../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
[Current thread is 1 (Thread 0x7fa4e7f1b200 (LWP 2627))]
(gdb) thread apply all bt

Thread 33 (Thread 0x7fa4c720f700 (LWP 2632)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fa4e376624f in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4e61cd222 in ARDOUR::Analyser::work () at ../libs/ardour/analyser.cc:87
#3  0x00007fa4e61cd00e in analyser_work () at ../libs/ardour/analyser.cc:52
#4  0x00005598def16803 in sigc::pointer_functor0<void>::operator() (this=0x5598e058ea18) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#5  0x00005598def13c10 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x5598e058ea10) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#6  0x00005598def0ff0f in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x5598e058e9e0) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:114
#7  0x00007fa4e3c8d52d in ?? () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#8  0x00007fa4e37483d5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fa4df4ca494 in start_thread (arg=0x7fa4c720f700) at pthread_create.c:333
#10 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 32 (Thread 0x7fa4c8a12700 (LWP 2629)):
#0  0x00007fa4df4d37dd in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa4e3749ab8 in g_usleep () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00005598df232a13 in gui_event_loop (ptr=0x0) at ../gtk2_ardour/linux_vst_gui_support.cc:459
#3  0x00007fa4df4ca494 in start_thread (arg=0x7fa4c8a12700) at pthread_create.c:333
#4  0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 31 (Thread 0x7fa4921a0700 (LWP 2666)):
#0  0x00007fa4dc1e64ed in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa4e37209f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4e3720d82 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa4e49166c0 in BaseUI::main_thread (this=0x5598e2ddda70) at ../libs/pbd/base_ui.cc:86
#4  0x00007fa4e491a7b4 in sigc::bound_mem_functor0<void, BaseUI>::operator() (this=0x5598e2dde1b8) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1991
#5  0x00007fa4e491a3f4 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator() (this=0x5598e2dde1b0)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#6  0x00007fa4e4919e35 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it (rep=0x5598e2dde180)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:114
#7  0x00007fa4e3c8d52d in ?? () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#8  0x00007fa4e37483d5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fa4df4ca494 in start_thread (arg=0x7fa4921a0700) at pthread_create.c:333
#10 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 30 (Thread 0x7fa49260a700 (LWP 2659)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019ad8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638e178 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:405
#5  0x00007fa4e638e536 in ARDOUR::Graph::helper_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:436
#6  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa492609b58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa492609b68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#8  0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa492609b58)
    at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#10 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa492609b50) at /usr/include/boost/function/function_template.hpp:771
#11 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e1c505a0) at ../libs/backends/jack/jack_audiobackend.cc:936
#12 0x00007fa4df4ca494 in start_thread (arg=0x7fa49260a700) at pthread_create.c:333
#13 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 29 (Thread 0x7fa492589700 (LWP 2660)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019ad8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638e178 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:405
#5  0x00007fa4e638e536 in ARDOUR::Graph::helper_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:436
#6  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa492588b58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa492588b68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#8  0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa492588b58)
    at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#10 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa492588b50) at /usr/include/boost/function/function_template.hpp:771
---Type <return> to continue, or q <return> to quit---
#11 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e0f2bf30) at ../libs/backends/jack/jack_audiobackend.cc:936
#12 0x00007fa4df4ca494 in start_thread (arg=0x7fa492589700) at pthread_create.c:333
#13 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 28 (Thread 0x7fa492a12700 (LWP 2651)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019ad8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638e178 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:405
#5  0x00007fa4e638e536 in ARDOUR::Graph::helper_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:436
#6  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa492a11b58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa492a11b68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#8  0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa492a11b58)
    at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#10 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa492a11b50) at /usr/include/boost/function/function_template.hpp:771
#11 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e0f2bf30) at ../libs/backends/jack/jack_audiobackend.cc:936
#12 0x00007fa4df4ca494 in start_thread (arg=0x7fa492a12700) at pthread_create.c:333
#13 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 27 (Thread 0x7fa4460f7700 (LWP 2670)):
#0  0x00007fa4df4d37dd in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa4e3749ab8 in g_usleep () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4e628a7a6 in ARDOUR::AutomationWatch::thread (this=0x5598e107b680) at ../libs/ardour/automation_watch.cc:177
#3  0x00007fa4e628e38f in boost::_mfi::mf0<void, ARDOUR::AutomationWatch>::operator() (this=0x5598e0da4b20, p=0x5598e107b680) at /usr/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007fa4e628e01a in boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list0> (
    this=0x5598e0da4b30, f=..., a=...) at /usr/include/boost/bind/bind.hpp:259
#5  0x00007fa4e628d99b in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >::operator() (
    this=0x5598e0da4b20) at /usr/include/boost/bind/bind.hpp:1294
#6  0x00007fa4e628d91c in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > > >::operator() (this=0x5598e0da4b20) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007fa4e628d362 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >, void>::call_it (rep=0x5598e0da4af0) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:114
#8  0x00007fa4e3c8d52d in ?? () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#9  0x00007fa4e37483d5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fa4df4ca494 in start_thread (arg=0x7fa4460f7700) at pthread_create.c:333
#11 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 26 (Thread 0x7fa4468f8700 (LWP 2669)):

#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa4e6788317 in ARDOUR::Session::auto_connect_thread_run (this=0x5598e0d9f4c0) at ../libs/ardour/session.cc:7225
#2  0x00007fa4e6788048 in ARDOUR::Session::auto_connect_thread (arg=0x5598e0d9f4c0) at ../libs/ardour/session.cc:7172
#3  0x00007fa4df4ca494 in start_thread (arg=0x7fa4468f8700) at pthread_create.c:333
#4  0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 25 (Thread 0x7fa492487700 (LWP 2662)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019ad8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638e178 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:405
#5  0x00007fa4e638e536 in ARDOUR::Graph::helper_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:436
#6  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa492486b58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa492486b68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#8  0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa492486b58)
    at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#10 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa492486b50) at /usr/include/boost/function/function_template.hpp:771
#11 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e2014fc0) at ../libs/backends/jack/jack_audiobackend.cc:936
#12 0x00007fa4df4ca494 in start_thread (arg=0x7fa492487700) at pthread_create.c:333
#13 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 24 (Thread 0x7fa492303800 (LWP 2665)):
#0  0x00007fa4dc1e64ed in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa4e492c7aa in CrossThreadChannel::poll_for_request (this=0x5598e0d9e658) at ../libs/pbd/crossthread.posix.cc:83
---Type <return> to continue, or q <return> to quit---
#2  0x00007fa4e492c813 in CrossThreadChannel::receive (this=0x5598e0d9e658, msg=@0x7fa49230228f: 0 '\000', wait=true) at ../libs/pbd/crossthread.posix.cc:104
#3  0x00007fa4e629e01e in ARDOUR::Butler::thread_work (this=0x5598e0d9e5c0) at ../libs/ardour/butler.cc:175
#4  0x00007fa4e629dd9f in ARDOUR::Butler::_thread_work (arg=0x5598e0d9e5c0) at ../libs/ardour/butler.cc:156
#5  0x00007fa4e494f3b8 in fake_thread_start (arg=0x5598e2ddd7e0) at ../libs/pbd/pthread_utils.cc:101
#6  0x00007fa4df4ca494 in start_thread (arg=0x7fa492303800) at pthread_create.c:333
#7  0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 23 (Thread 0x7fa493294700 (LWP 2667)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e39d3280) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e39d3280, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e39d3280, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e39d3280) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e68caee0 in ARDOUR::Worker::run (this=0x5598e39d3260) at ../libs/ardour/worker.cc:140
#5  0x00007fa4e68cbbb8 in sigc::bound_mem_functor0<void, ARDOUR::Worker>::operator() (this=0x5598e39d30f8) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1991
#6  0x00007fa4e68cbb00 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ARDOUR::Worker> >::operator() (this=0x5598e39d30f0)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007fa4e68cb9d7 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ARDOUR::Worker>, void>::call_it (rep=0x5598e39d30c0)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:114
#8  0x00007fa4e3c8d52d in ?? () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#9  0x00007fa4e37483d5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fa4df4ca494 in start_thread (arg=0x7fa493294700) at pthread_create.c:333
#11 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 22 (Thread 0x7fa4ada8b700 (LWP 2668)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa4e67fc483 in ARDOUR::Session::emit_thread_run (this=0x5598e0d9f4c0) at ../libs/ardour/session_process.cc:1374
#2  0x00007fa4e67fc420 in ARDOUR::Session::emit_thread (arg=0x5598e0d9f4c0) at ../libs/ardour/session_process.cc:1363
#3  0x00007fa4df4ca494 in start_thread (arg=0x7fa4ada8b700) at pthread_create.c:333
#4  0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 21 (Thread 0x7fa49270c700 (LWP 2657)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019ad8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638e178 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:405
#5  0x00007fa4e638e536 in ARDOUR::Graph::helper_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:436
#6  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa49270bb58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa49270bb68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#8  0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa49270bb58)
    at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#10 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa49270bb50) at /usr/include/boost/function/function_template.hpp:771
#11 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e0f2bf30) at ../libs/backends/jack/jack_audiobackend.cc:936
#12 0x00007fa4df4ca494 in start_thread (arg=0x7fa49270c700) at pthread_create.c:333
#13 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 20 (Thread 0x7fa49278d700 (LWP 2656)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019ad8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638e178 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:405
#5  0x00007fa4e638e536 in ARDOUR::Graph::helper_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:436
#6  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa49278cb58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa49278cb68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#8  0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa49278cb58)
    at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#10 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa49278cb50) at /usr/include/boost/function/function_template.hpp:771
#11 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e1c505a0) at ../libs/backends/jack/jack_audiobackend.cc:936
#12 0x00007fa4df4ca494 in start_thread (arg=0x7fa49278d700) at pthread_create.c:333
#13 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 19 (Thread 0x7fa492508700 (LWP 2661)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
---Type <return> to continue, or q <return> to quit---
#1  do_futex_wait (sem=sem@entry=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019ad8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638e178 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:405
#5  0x00007fa4e638e536 in ARDOUR::Graph::helper_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:436
#6  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa492507b58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa492507b68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#8  0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa492507b58)
    at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#10 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa492507b50) at /usr/include/boost/function/function_template.hpp:771
#11 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e1c505a0) at ../libs/backends/jack/jack_audiobackend.cc:936
#12 0x00007fa4df4ca494 in start_thread (arg=0x7fa492508700) at pthread_create.c:333
#13 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 18 (Thread 0x7fa4ac0b8700 (LWP 2645)):
#0  0x00007fa4dc1e64ed in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa4b6710126 in jack_cycle_wait () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#2  0x00007fa4b6b9bc23 in ARDOUR::JACKAudioBackend::process_thread (this=0x5598e08bddb0) at ../libs/backends/jack/jack_audiobackend.cc:965
#3  0x00007fa4b6b9bbbe in ARDOUR::JACKAudioBackend::_process_thread (arg=0x5598e08bddb0) at ../libs/backends/jack/jack_audiobackend.cc:944
#4  0x00007fa4b67104e7 in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#5  0x00007fa4df4ca494 in start_thread (arg=0x7fa4ac0b8700) at pthread_create.c:333
#6  0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 17 (Thread 0x7fa492991700 (LWP 2652)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019ad8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638e178 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:405
#5  0x00007fa4e638e536 in ARDOUR::Graph::helper_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:436
#6  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa492990b58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa492990b68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#8  0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa492990b58)
    at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#10 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa492990b50) at /usr/include/boost/function/function_template.hpp:771
#11 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e1c505a0) at ../libs/backends/jack/jack_audiobackend.cc:936
#12 0x00007fa4df4ca494 in start_thread (arg=0x7fa492991700) at pthread_create.c:333
#13 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 16 (Thread 0x7fa492406700 (LWP 2663)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019ad8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638e178 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:405
#5  0x00007fa4e638e536 in ARDOUR::Graph::helper_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:436
#6  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa492405b58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa492405b68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#8  0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa492405b58)
    at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#10 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa492405b50) at /usr/include/boost/function/function_template.hpp:771
#11 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e0f2bf30) at ../libs/backends/jack/jack_audiobackend.cc:936
#12 0x00007fa4df4ca494 in start_thread (arg=0x7fa492406700) at pthread_create.c:333
#13 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 15 (Thread 0x7fa4b4e05700 (LWP 2639)):
#0  0x00007fa4dc1e64ed in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa4e37209f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4e3720b0c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa4e3720b51 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fa4e37483d5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#5  0x00007fa4df4ca494 in start_thread (arg=0x7fa4b4e05700) at pthread_create.c:333
#6  0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 14 (Thread 0x7fa4b75d2700 (LWP 2634)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fa4e376624f in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4e6232806 in ARDOUR::AudioEngine::do_devicelist_update (this=0x5598e065f650) at ../libs/ardour/audioengine.cc:561
#3  0x00007fa4e623ddd1 in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x5598e0660040, p=0x5598e065f650) at /usr/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007fa4e623d800 in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (
    this=0x5598e0660050, f=..., a=...) at /usr/include/boost/bind/bind.hpp:259
#5  0x00007fa4e623cf3d in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (
    this=0x5598e0660040) at /usr/include/boost/bind/bind.hpp:1294
#6  0x00007fa4e623c7a2 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=0x5598e0660040) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007fa4e623ba02 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=0x5598e0660010) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:114
#8  0x00007fa4e3c8d52d in ?? () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#9  0x00007fa4e37483d5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fa4df4ca494 in start_thread (arg=0x7fa4b75d2700) at pthread_create.c:333
#11 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 13 (Thread 0x7fa4ad28a700 (LWP 2644)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa4b6711b5f in ?? () from /usr/lib/x86_64-linux-gnu/libjack.so.0
#2  0x00007fa4df4ca494 in start_thread (arg=0x7fa4ad28a700) at pthread_create.c:333
#3  0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 12 (Thread 0x7fa492910700 (LWP 2653)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019ad8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638e178 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:405
#5  0x00007fa4e638e536 in ARDOUR::Graph::helper_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:436
#6  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa49290fb58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa49290fb68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#8  0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa49290fb58)
    at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#10 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa49290fb50) at /usr/include/boost/function/function_template.hpp:771
#11 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e14436c0) at ../libs/backends/jack/jack_audiobackend.cc:936
#12 0x00007fa4df4ca494 in start_thread (arg=0x7fa492910700) at pthread_create.c:333
#13 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 11 (Thread 0x7fa492385700 (LWP 2664)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019ad8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638e178 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:405
#5  0x00007fa4e638e536 in ARDOUR::Graph::helper_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:436
#6  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa492384b58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa492384b68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#8  0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa492384b58)
    at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#10 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa492384b50) at /usr/include/boost/function/function_template.hpp:771
#11 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e2007fc0) at ../libs/backends/jack/jack_audiobackend.cc:936
#12 0x00007fa4df4ca494 in start_thread (arg=0x7fa492385700) at pthread_create.c:333
#13 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 10 (Thread 0x7fa444e82700 (LWP 2674)):
#0  0x00007fa4e7892eb1 in boost::scoped_array<ARDOUR::PeakData>::operator[] (this=0x7fa444e811d0, i=11718) at /usr/include/boost/smart_ptr/scoped_array.hpp:80
#1  0x00007fa4e625faeb in ARDOUR::AudioSource::read_peaks_with_fpp (this=0x7fa44d52d2b0, peaks=0x7fa43c4a28f0, npeaks=120, start=0, cnt=8912896, samples_per_visual_peak=74528, 
    samples_per_file_peak=256) at ../libs/ardour/audiosource.cc:602
#2  0x00007fa4e625e777 in ARDOUR::AudioSource::read_peaks (this=0x7fa44d52d2b0, peaks=0x7fa43c4a28f0, npeaks=120, start=0, cnt=8912896, samples_per_visual_peak=74528)
---Type <return> to continue, or q <return> to quit---
    at ../libs/ardour/audiosource.cc:332
#3  0x00007fa4e624aba9 in ARDOUR::AudioRegion::read_peaks (this=0x5598e6d11840, buf=0x7fa43c4a28f0, npeaks=120, offset=0, cnt=8912896, chan_n=0, frames_per_pixel=74528)
    at ../libs/ardour/audioregion.cc:431
#4  0x00007fa4e788d174 in ArdourCanvas::WaveView::generate_image (this=0x5598e4c02010, req=..., in_render_thread=true) at ../libs/canvas/wave_view.cc:1005
#5  0x00007fa4e788f0d7 in ArdourCanvas::WaveView::drawing_thread () at ../libs/canvas/wave_view.cc:1595
#6  0x00005598def16803 in sigc::pointer_functor0<void>::operator() (this=0x5598e45586c8) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#7  0x00005598def13c10 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x5598e45586c0) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#8  0x00005598def0ff0f in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x5598e4558690) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:114
#9  0x00007fa4e3c8d52d in ?? () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#10 0x00007fa4e37483d5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fa4df4ca494 in start_thread (arg=0x7fa444e82700) at pthread_create.c:333
#12 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 9 (Thread 0x7fa49288f700 (LWP 2654)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019ad8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638e178 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:405
#5  0x00007fa4e638e536 in ARDOUR::Graph::helper_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:436
#6  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa49288eb58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa49288eb68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#8  0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa49288eb58)
    at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#10 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa49288eb50) at /usr/include/boost/function/function_template.hpp:771
#11 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e0f2bf30) at ../libs/backends/jack/jack_audiobackend.cc:936
#12 0x00007fa4df4ca494 in start_thread (arg=0x7fa49288f700) at pthread_create.c:333
#13 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 8 (Thread 0x7fa49268b700 (LWP 2658)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019ad8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638e178 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:405
#5  0x00007fa4e638e536 in ARDOUR::Graph::helper_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:436
#6  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa49268ab58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa49268ab68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#8  0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa49268ab58)
    at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#10 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa49268ab50) at /usr/include/boost/function/function_template.hpp:771
#11 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e2014fc0) at ../libs/backends/jack/jack_audiobackend.cc:936
#12 0x00007fa4df4ca494 in start_thread (arg=0x7fa49268b700) at pthread_create.c:333
#13 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 7 (Thread 0x7fa4c7a10700 (LWP 2631)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fa4e376624f in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4e688737c in peak_thread_work () at ../libs/ardour/source_factory.cc:71
#3  0x00005598def16803 in sigc::pointer_functor0<void>::operator() (this=0x5598e04fa228) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x00005598def13c10 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x5598e04fa220) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#5  0x00005598def0ff0f in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x5598e04fa1f0) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:114
#6  0x00007fa4e3c8d52d in ?? () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#7  0x00007fa4e37483d5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fa4df4ca494 in start_thread (arg=0x7fa4c7a10700) at pthread_create.c:333
#9  0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 6 (Thread 0x7fa4b7dd3700 (LWP 2633)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fa4e376624f in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4e62325e0 in ARDOUR::AudioEngine::do_reset_backend (this=0x5598e065f650) at ../libs/ardour/audioengine.cc:526
#3  0x00007fa4e623ddd1 in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x5598e065f570, p=0x5598e065f650) at /usr/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007fa4e623d800 in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (
    this=0x5598e065f580, f=..., a=...) at /usr/include/boost/bind/bind.hpp:259
---Type <return> to continue, or q <return> to quit---
#5  0x00007fa4e623cf3d in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (
    this=0x5598e065f570) at /usr/include/boost/bind/bind.hpp:1294
#6  0x00007fa4e623c7a2 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=0x5598e065f570) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007fa4e623ba02 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=0x5598e065f540) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:114
#8  0x00007fa4e3c8d52d in ?? () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#9  0x00007fa4e37483d5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fa4df4ca494 in start_thread (arg=0x7fa4b7dd3700) at pthread_create.c:333
#11 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 5 (Thread 0x7fa492a93700 (LWP 2650)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019ad8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019ad8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638e178 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:405
#5  0x00007fa4e638e840 in ARDOUR::Graph::main_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:477
#6  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa492a92b58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa492a92b68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#8  0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa492a92b58)
    at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#10 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa492a92b50) at /usr/include/boost/function/function_template.hpp:771
#11 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e14436c0) at ../libs/backends/jack/jack_audiobackend.cc:936
#12 0x00007fa4df4ca494 in start_thread (arg=0x7fa492a93700) at pthread_create.c:333
#13 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 4 (Thread 0x7fa49280e700 (LWP 2655)):
#0  0x00007fa4df4d2536 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x5598e2019af8) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x5598e2019af8, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fa4df4d25e4 in __new_sem_wait_slow (sem=0x5598e2019af8, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007fa4e6390000 in PBD::Semaphore::wait (this=0x5598e2019af8) at /home/colinf/src/ardour/ardour/libs/pbd/pbd/semutils.h:62
#4  0x00007fa4e638d62e in ARDOUR::Graph::restart_cycle (this=0x5598e2019a00) at ../libs/ardour/graph.cc:280
#5  0x00007fa4e638d5fb in ARDOUR::Graph::dec_ref (this=0x5598e2019a00) at ../libs/ardour/graph.cc:267
#6  0x00007fa4e6395328 in ARDOUR::GraphNode::finish (this=0x5598e31e9368, chain=1) at ../libs/ardour/graphnode.cc:71
#7  0x00007fa4e638e322 in ARDOUR::Graph::run_one (this=0x5598e2019a00) at ../libs/ardour/graph.cc:419
#8  0x00007fa4e638e536 in ARDOUR::Graph::helper_thread (this=0x5598e2019a00) at ../libs/ardour/graph.cc:436
#9  0x00007fa4e6394b67 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fa49280db58, p=0x5598e2019a00) at /usr/include/boost/bind/mem_fn_template.hpp:49
#10 0x00007fa4e63942d0 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fa49280db68, f=..., 
    a=...) at /usr/include/boost/bind/bind.hpp:259
#11 0x00007fa4e639372f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fa49280db58)
    at /usr/include/boost/bind/bind.hpp:1294
#12 0x00007fa4e6392fbe 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/include/boost/function/function_template.hpp:159
#13 0x00005598de741c86 in boost::function0<void>::operator() (this=0x7fa49280db50) at /usr/include/boost/function/function_template.hpp:771
#14 0x00007fa4b6b9bb6e in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5598e2014fc0) at ../libs/backends/jack/jack_audiobackend.cc:936
#15 0x00007fa4df4ca494 in start_thread (arg=0x7fa49280e700) at pthread_create.c:333
#16 0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 3 (Thread 0x7fa4ae6af700 (LWP 2640)):
#0  0x00007fa4dc1e64ed in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fa4e37209f6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4e3720d82 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa4e1d9a656 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fa4e37483d5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fa4df4ca494 in start_thread (arg=0x7fa4ae6af700) at pthread_create.c:333
#6  0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 2 (Thread 0x7fa4c8211700 (LWP 2630)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fa4e376624f in g_cond_wait () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4e688737c in peak_thread_work () at ../libs/ardour/source_factory.cc:71
#3  0x00005598def16803 in sigc::pointer_functor0<void>::operator() (this=0x5598e058e2a8) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x00005598def13c10 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x5598e058e2a0) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#5  0x00005598def0ff0f in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x5598e058e270) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:114
#6  0x00007fa4e3c8d52d in ?? () from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#7  0x00007fa4e37483d5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#8  0x00007fa4df4ca494 in start_thread (arg=0x7fa4c8211700) at pthread_create.c:333
#9  0x00007fa4dc1ef93f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

Thread 1 (Thread 0x7fa4e7f1b200 (LWP 2627)):
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007fa4dc13b3fa in __GI_abort () at abort.c:89
#2  0x00007fa4dc132e37 in __assert_fail_base (fmt=<optimized out>, assertion=assertion@entry=0x7fa4e2362608 "CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&surface->ref_count)", 
    file=file@entry=0x7fa4e23625c0 "../../../../src/cairo-surface.c", line=line@entry=928, function=function@entry=0x7fa4e2362b30 "cairo_surface_reference") at assert.c:92
#3  0x00007fa4dc132ee2 in __GI___assert_fail (assertion=0x7fa4e2362608 "CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&surface->ref_count)", 
    file=0x7fa4e23625c0 "../../../../src/cairo-surface.c", line=928, function=0x7fa4e2362b30 "cairo_surface_reference") at assert.c:101
#4  0x00007fa4e22f5183 in cairo_surface_reference () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#5  0x00007fa4e22d7ec5 in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#6  0x00007fa4e22d81eb in cairo_pattern_create_for_surface () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#7  0x00007fa4e22b0061 in ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#8  0x00007fa4e22a7a07 in cairo_set_source_surface () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
#9  0x00007fa4dff1bf74 in Cairo::Context::set_source(Cairo::RefPtr<Cairo::Surface> const&, double, double) () from /usr/lib/x86_64-linux-gnu/libcairomm-1.0.so.1
#10 0x00007fa4e788e23d in ArdourCanvas::WaveView::render (this=0x5598e4d5f8d0, area=..., context=...) at ../libs/canvas/wave_view.cc:1263
#11 0x00007fa4e78575c0 in ArdourCanvas::Item::render_children (this=0x5598e4cdc450, area=..., context=...) at ../libs/canvas/item.cc:814
#12 0x00007fa4e784dd93 in ArdourCanvas::Container::render (this=0x5598e4cdc450, area=..., context=...) at ../libs/canvas/container.cc:43
#13 0x00007fa4e78575c0 in ArdourCanvas::Item::render_children (this=0x5598e5cff630, area=..., context=...) at ../libs/canvas/item.cc:814
#14 0x00007fa4e784dd93 in ArdourCanvas::Container::render (this=0x5598e5cff630, area=..., context=...) at ../libs/canvas/container.cc:43
#15 0x00007fa4e78575c0 in ArdourCanvas::Item::render_children (this=0x5598e1b1c540, area=..., context=...) at ../libs/canvas/item.cc:814
#16 0x00007fa4e784dd93 in ArdourCanvas::Container::render (this=0x5598e1b1c540, area=..., context=...) at ../libs/canvas/container.cc:43
#17 0x00007fa4e78575c0 in ArdourCanvas::Item::render_children (this=0x5598e14d4010, area=..., context=...) at ../libs/canvas/item.cc:814
#18 0x00007fa4e784dd93 in ArdourCanvas::Container::render (this=0x5598e14d4010, area=..., context=...) at ../libs/canvas/container.cc:43
#19 0x00007fa4e78575c0 in ArdourCanvas::Item::render_children (this=0x5598e243a070, area=..., context=...) at ../libs/canvas/item.cc:814
#20 0x00007fa4e784dd93 in ArdourCanvas::Container::render (this=0x5598e243a070, area=..., context=...) at ../libs/canvas/container.cc:43
#21 0x00007fa4e78809d2 in ArdourCanvas::ScrollGroup::render (this=0x5598e243a070, area=..., context=...) at ../libs/canvas/scroll_group.cc:67
#22 0x00007fa4e78575c0 in ArdourCanvas::Item::render_children (this=0x5598e2439840, area=..., context=...) at ../libs/canvas/item.cc:814
#23 0x00007fa4e784dd93 in ArdourCanvas::Container::render (this=0x5598e2439840, area=..., context=...) at ../libs/canvas/container.cc:43
#24 0x00007fa4e783b97a in ArdourCanvas::Canvas::render (this=0x5598e2439828, area=..., context=...) at ../libs/canvas/canvas.cc:128
#25 0x00007fa4e783f314 in ArdourCanvas::GtkCanvas::on_expose_event (this=0x5598e2439828, ev=0x7ffdbf01cd50) at ../libs/canvas/canvas.cc:894
#26 0x00007fa4e0ea9534 in Gtk::Widget_Class::expose_event_callback(_GtkWidget*, _GdkEventExpose*) () from /usr/lib/x86_64-linux-gnu/libgtkmm-2.4.so.1
#27 0x00007fa4e2db57bc in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#28 0x00007fa4e39f9f75 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#29 0x00007fa4e3a0c37d in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#30 0x00007fa4e3a1467f in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#31 0x00007fa4e3a14fbf in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#32 0x00007fa4e2ecd8ac in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#33 0x00007fa4e2db45a2 in gtk_main_do_event () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#34 0x00007fa4e2a10aef in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#35 0x00007fa4e2a10a95 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#36 0x00007fa4e2a10a95 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#37 0x00007fa4e2a10a95 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#38 0x00007fa4e2a0d5c1 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#39 0x00007fa4e2a0ded8 in gdk_window_process_all_updates () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#40 0x00007fa4e2a0df39 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#41 0x00007fa4e29ecd37 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#42 0x00007fa4e37206aa in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007fa4e3720a60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007fa4e3720d82 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007fa4e2db33b7 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#46 0x00007fa4e7482806 in Gtkmm2ext::UI::run (this=0x5598e068c9b0, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:286
#47 0x00005598dec9a32a in main (argc=1, argv=0x7ffdbf01d618) at ../gtk2_ardour/main.cc:413
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