ardour-5.0.rc2.4: ../libs/ardour/plugin_insert.cc:2973: void ARDOUR::PluginInsert::latency_changed(): Assertion `owner ()' failed.
Aborted (core dumped)
colinf@colinf-laptop:~/src/ardour2/ardour/gtk2_ardour$ ./ardbg
GNU gdb (Debian 7.11.1-2) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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This GDB was configured as "x86_64-linux-gnu".
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For bug reporting instructions, please see:
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Reading symbols from ./../build/gtk2_ardour/ardour-5.0.rc2.4...done.
(gdb) core-file core
warning: core file may not match specified executable file.
[New LWP 26990]
[New LWP 27035]
[New LWP 27037]
[New LWP 26992]
[New LWP 26993]
[New LWP 26994]
[New LWP 26995]
[New LWP 26996]
[New LWP 26997]
[New LWP 27034]
[New LWP 27051]
[New LWP 27011]
[New LWP 26998]
[New LWP 26999]
[New LWP 27026]
[New LWP 27050]
[New LWP 27052]
[New LWP 27053]
[New LWP 27039]
[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-5.0.rc2.4'.
Program terminated with signal SIGABRT, Aborted.
#0  0x00007f9cebd301c8 in __GI_raise (sig=sig@entry=6)
    at ../sysdeps/unix/sysv/linux/raise.c:54
54	../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
[Current thread is 1 (Thread 0x7f9cf72e9a40 (LWP 26990))]
(gdb) thread apply all bt

Thread 19 (Thread 0x7f9ca77fe700 (LWP 27039)):
#0  0x00007f9cebdb3e8d in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9cebddd734 in usleep (useconds=<optimized out>)
    at ../sysdeps/posix/usleep.c:32
#2  0x00007f9ca5d3dd8b in ?? () from /usr/local/lib/lv2/carla.lv2/carla.so
#3  0x00007f9ca5c2bc35 in ?? () from /usr/local/lib/lv2/carla.lv2/carla.so
#4  0x00007f9ceedf8464 in start_thread (arg=0x7f9ca77fe700)
    at pthread_create.c:333
#5  0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7f9c8831c700 (LWP 27053)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f9cf2e74c2f in g_cond_wait ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9cf6c8ae0b in ArdourCanvas::WaveView::drawing_thread ()
    at ../libs/canvas/wave_view.cc:1565
#3  0x0000000000e466d5 in sigc::pointer_functor0<void>::operator() (
    this=0x84ad5e8) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x0000000000e43b12 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x84ad5e0)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
---Type <return> to continue, or q <return> to quit---
#5  0x0000000000e3facf in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x84ad5b0)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:115
#6  0x00007f9cf339a15d in ?? ()
   from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#7  0x00007f9cf2e56bc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f9ceedf8464 in start_thread (arg=0x7f9c8831c700)
    at pthread_create.c:333
#9  0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7f9c88d1d700 (LWP 27052)):
#0  0x00007f9ceee017cd in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9cf2e58238 in g_usleep ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9cf58a2987 in ARDOUR::AutomationWatch::thread (this=0x28dd580)
    at ../libs/ardour/automation_watch.cc:153
#3  0x00007f9cf58a5e83 in boost::_mfi::mf0<void, ARDOUR::AutomationWatch>::operator() (this=0xbb45590, p=0x28dd580)
    at /usr/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007f9cf58a5b00 in boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list0> (this=0xbb455a0, f=..., a=...)
---Type <return> to continue, or q <return> to quit---
    at /usr/include/boost/bind/bind.hpp:253
#5  0x00007f9cf58a55a7 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >::operator() (this=0xbb45590) at /usr/include/boost/bind/bind.hpp:893
#6  0x00007f9cf58a5534 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=0xbb45590)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007f9cf58a5012 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=0xbb45560)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:115
#8  0x00007f9cf339a15d in ?? ()
   from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#9  0x00007f9cf2e56bc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f9ceedf8464 in start_thread (arg=0x7f9c88d1d700)
    at pthread_create.c:333
#11 0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7f9ca57fa700 (LWP 27050)):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
---Type <return> to continue, or q <return> to quit---
#1  0x00007f9cf5d6415f in ARDOUR::Session::emit_thread_run (this=0x2344f80)
    at ../libs/ardour/session_process.cc:1316
#2  0x00007f9cf5d640fc in ARDOUR::Session::emit_thread (arg=0x2344f80)
    at ../libs/ardour/session_process.cc:1305
#3  0x00007f9ceedf8464 in start_thread (arg=0x7f9ca57fa700)
    at pthread_create.c:333
#4  0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7f9c93fff700 (LWP 27026)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f9cf2e74d4a in g_cond_wait_until ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9cf2e04999 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9cf2e04fbb in g_async_queue_timeout_pop ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f9cf2e5761a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f9cf2e56bc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f9ceedf8464 in start_thread (arg=0x7f9c93fff700)
    at pthread_create.c:333
#7  0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

---Type <return> to continue, or q <return> to quit---
Thread 14 (Thread 0x7f9cc30a2700 (LWP 26999)):
#0  0x00007f9cebddb19d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9cf2e3039c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9cf2e30722 in g_main_loop_run ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9cf14d0916 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f9cf2e56bc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f9ceedf8464 in start_thread (arg=0x7f9cc30a2700)
    at pthread_create.c:333
#6  0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f9cc38a3700 (LWP 26998)):
#0  0x00007f9cebddb19d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9cf2e3039c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9cf2e304ac in g_main_context_iteration ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9cf2e304e9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f9cf2e56bc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f9ceedf8464 in start_thread (arg=0x7f9cc38a3700)
    at pthread_create.c:333
#6  0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
---Type <return> to continue, or q <return> to quit---

Thread 12 (Thread 0x7f9cc1c7d700 (LWP 27011)):
#0  0x00007f9ceee017cd in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9cf2e58238 in g_usleep ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9cd06a4ef9 in ARDOUR::DummyAudioBackend::main_process_thread (
    this=0x21346d0) at ../libs/backends/dummy/dummy_audiobackend.cc:1362
#3  0x00007f9cd06a0d95 in pthread_process (arg=0x21346d0)
    at ../libs/backends/dummy/dummy_audiobackend.cc:421
#4  0x00007f9ceedf8464 in start_thread (arg=0x7f9cc1c7d700)
    at pthread_create.c:333
#5  0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f9cc247e700 (LWP 27051)):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f9cf5cf04a7 in ARDOUR::Session::auto_connect_thread_run (
    this=0x2344f80) at ../libs/ardour/session.cc:7057
#2  0x00007f9cf5cf021c in ARDOUR::Session::auto_connect_thread (arg=0x2344f80)
    at ../libs/ardour/session.cc:7011
#3  0x00007f9ceedf8464 in start_thread (arg=0x7f9cc247e700)
    at pthread_create.c:333
---Type <return> to continue, or q <return> to quit---
#4  0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f9cc0cf8800 (LWP 27034)):
#0  0x00007f9cebddb19d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9cf402df8c in CrossThreadChannel::poll_for_request (this=0x23440c8)
    at ../libs/pbd/crossthread.posix.cc:75
#2  0x00007f9cf402dff5 in CrossThreadChannel::receive (this=0x23440c8, 
    msg=@0x7f9cc0cf72ef: 0 '\000', wait=true)
    at ../libs/pbd/crossthread.posix.cc:96
#3  0x00007f9cf58b5cf6 in ARDOUR::Butler::thread_work (this=0x2344030)
    at ../libs/ardour/butler.cc:175
#4  0x00007f9cf58b5a77 in ARDOUR::Butler::_thread_work (arg=0x2344030)
    at ../libs/ardour/butler.cc:156
#5  0x00007f9cf404ad1c in fake_thread_start (arg=0x4e6e060)
    at ../libs/pbd/pthread_utils.cc:101
#6  0x00007f9ceedf8464 in start_thread (arg=0x7f9cc0cf8800)
    at pthread_create.c:333
#7  0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f9cd1ee7700 (LWP 26997)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
---Type <return> to continue, or q <return> to quit---
#1  0x00007f9cf2e74c2f in g_cond_wait ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9cf584dcd4 in ARDOUR::AudioEngine::do_devicelist_update (
    this=0x1f52890) at ../libs/ardour/audioengine.cc:560
#3  0x00007f9cf58588b9 in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x1f27900, p=0x1f52890)
    at /usr/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007f9cf58582e8 in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (this=0x1f27910, f=..., a=...) at /usr/include/boost/bind/bind.hpp:253
#5  0x00007f9cf5857a33 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x1f27900) at /usr/include/boost/bind/bind.hpp:893
#6  0x00007f9cf585733e 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=0x1f27900)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007f9cf585661e 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=0x1f278d0)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:115
#8  0x00007f9cf339a15d in ?? ()
   from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
---Type <return> to continue, or q <return> to quit---
#9  0x00007f9cf2e56bc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f9ceedf8464 in start_thread (arg=0x7f9cd1ee7700)
    at pthread_create.c:333
#11 0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f9cd26e8700 (LWP 26996)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f9cf2e74c2f in g_cond_wait ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9cf584daae in ARDOUR::AudioEngine::do_reset_backend (
    this=0x1f52890) at ../libs/ardour/audioengine.cc:525
#3  0x00007f9cf58588b9 in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x1f274b0, p=0x1f52890)
    at /usr/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007f9cf58582e8 in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (this=0x1f274c0, f=..., a=...) at /usr/include/boost/bind/bind.hpp:253
#5  0x00007f9cf5857a33 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x1f274b0) at /usr/include/boost/bind/bind.hpp:893
#6  0x00007f9cf585733e in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR---Type <return> to continue, or q <return> to quit---
::AudioEngine*> > > >::operator() (this=0x1f274b0)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007f9cf585661e 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=0x1f27480)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:115
#8  0x00007f9cf339a15d in ?? ()
   from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#9  0x00007f9cf2e56bc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f9ceedf8464 in start_thread (arg=0x7f9cd26e8700)
    at pthread_create.c:333
#11 0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f9cd3fff700 (LWP 26995)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f9cf2e74c2f in g_cond_wait ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9cf57e841a in ARDOUR::Analyser::work ()
    at ../libs/ardour/analyser.cc:87
#3  0x00007f9cf57e8206 in analyser_work () at ../libs/ardour/analyser.cc:52
#4  0x0000000000e466d5 in sigc::pointer_functor0<void>::operator() (
    this=0x1ddd8a8) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
---Type <return> to continue, or q <return> to quit---
#5  0x0000000000e43b12 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x1ddd8a0)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#6  0x0000000000e3facf in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x1ddd870)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:115
#7  0x00007f9cf339a15d in ?? ()
   from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#8  0x00007f9cf2e56bc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f9ceedf8464 in start_thread (arg=0x7f9cd3fff700)
    at pthread_create.c:333
#10 0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f9cd8fae700 (LWP 26994)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f9cf2e74c2f in g_cond_wait ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9cf5de2fae in peak_thread_work ()
    at ../libs/ardour/source_factory.cc:71
#3  0x0000000000e466d5 in sigc::pointer_functor0<void>::operator() (
    this=0x1dcbee8) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x0000000000e43b12 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::---Type <return> to continue, or q <return> to quit---
operator() (this=0x1dcbee0)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#5  0x0000000000e3facf in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x1dcbeb0)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:115
#6  0x00007f9cf339a15d in ?? ()
   from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#7  0x00007f9cf2e56bc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f9ceedf8464 in start_thread (arg=0x7f9cd8fae700)
    at pthread_create.c:333
#9  0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f9cd97af700 (LWP 26993)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f9cf2e74c2f in g_cond_wait ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9cf5de2fae in peak_thread_work ()
    at ../libs/ardour/source_factory.cc:71
#3  0x0000000000e466d5 in sigc::pointer_functor0<void>::operator() (
    this=0x1d8cdd8) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x0000000000e43b12 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x1d8cdd0)
---Type <return> to continue, or q <return> to quit---
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#5  0x0000000000e3facf in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x1d8cda0)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:115
#6  0x00007f9cf339a15d in ?? ()
   from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#7  0x00007f9cf2e56bc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f9ceedf8464 in start_thread (arg=0x7f9cd97af700)
    at pthread_create.c:333
#9  0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f9cd9fb0700 (LWP 26992)):
#0  0x00007f9ceee017cd in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9cf2e58238 in g_usleep ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x000000000113f628 in gui_event_loop (ptr=0x0)
    at ../gtk2_ardour/linux_vst_gui_support.cc:475
#3  0x00007f9ceedf8464 in start_thread (arg=0x7f9cd9fb0700)
    at pthread_create.c:333
#4  0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

---Type <return> to continue, or q <return> to quit---
Thread 3 (Thread 0x7f9ca4ff9700 (LWP 27037)):
#0  0x00007f9ceee017cd in nanosleep () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9ca5cdb19e in ?? () from /usr/local/lib/lv2/carla.lv2/carla.so
#2  0x00007f9ca5c3d7aa in ?? () from /usr/local/lib/lv2/carla.lv2/carla.so
#3  0x00007f9ca5cecbeb in ?? () from /usr/local/lib/lv2/carla.lv2/carla.so
#4  0x00007f9ca5cecd59 in ?? () from /usr/local/lib/lv2/carla.lv2/carla.so
#5  0x00007f9ceedf8464 in start_thread (arg=0x7f9ca4ff9700)
    at pthread_create.c:333
#6  0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f9c937fe700 (LWP 27035)):
#0  0x00007f9cebddb19d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9cf2e3039c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9cf2e30722 in g_main_loop_run ()
   from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9cf401809b in BaseUI::main_thread (this=0x4e6e2a0)
    at ../libs/pbd/base_ui.cc:86
#4  0x00007f9cf401c0da in sigc::bound_mem_functor0<void, BaseUI>::operator() (
    this=0x4e6e968) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:1989
#5  0x00007f9cf401bd2e in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator() (this=0x4e6e960)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
---Type <return> to continue, or q <return> to quit---
#6  0x00007f9cf401b7e9 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it (rep=0x4e6e930)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:115
#7  0x00007f9cf339a15d in ?? ()
   from /usr/lib/x86_64-linux-gnu/libglibmm-2.4.so.1
#8  0x00007f9cf2e56bc5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007f9ceedf8464 in start_thread (arg=0x7f9c937fe700)
    at pthread_create.c:333
#10 0x00007f9cebde430d in clone ()
    at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f9cf72e9a40 (LWP 26990)):
#0  0x00007f9cebd301c8 in __GI_raise (sig=sig@entry=6)
    at ../sysdeps/unix/sysv/linux/raise.c:54
#1  0x00007f9cebd3164a in __GI_abort () at abort.c:89
#2  0x00007f9cebd29107 in __assert_fail_base (fmt=<optimized out>, 
    assertion=assertion@entry=0x7f9cf5f12352 "owner ()", 
    file=file@entry=0x7f9cf5f11ba8 "../libs/ardour/plugin_insert.cc", 
    line=line@entry=2973, 
    function=function@entry=0x7f9cf5f137c0 <ARDOUR::PluginInsert::latency_changed()::__PRETTY_FUNCTION__> "void ARDOUR::PluginInsert::latency_changed()")
    at assert.c:92
#3  0x00007f9cebd291b2 in __GI___assert_fail (
---Type <return> to continue, or q <return> to quit---
    assertion=0x7f9cf5f12352 "owner ()", 
    file=0x7f9cf5f11ba8 "../libs/ardour/plugin_insert.cc", line=2973, 
    function=0x7f9cf5f137c0 <ARDOUR::PluginInsert::latency_changed()::__PRETTY_FUNCTION__> "void ARDOUR::PluginInsert::latency_changed()") at assert.c:101
#4  0x00007f9cf5c029fd in ARDOUR::PluginInsert::latency_changed (
    this=0xb2db410) at ../libs/ardour/plugin_insert.cc:2973
#5  0x00007f9cf5bf32ea in ARDOUR::PluginInsert::activate (this=0xb2db410)
    at ../libs/ardour/plugin_insert.cc:560
#6  0x00007f9cf5c3147d in ARDOUR::Processor::set_state (this=0xb2db410, 
    node=..., version=3002) at ../libs/ardour/processor.cc:235
#7  0x00007f9cf5bff5d4 in ARDOUR::PluginInsert::set_state (this=0xb2db410, 
    node=..., version=3002) at ../libs/ardour/plugin_insert.cc:2476
#8  0x0000000000e27c2a in ProcessorBox::paste_processor_state (this=0x59937d8, 
    nlist=std::vector of length 1, capacity 1 = {...}, p=...)
    at ../gtk2_ardour/processor_box.cc:3375
#9  0x0000000000e1f9aa in ProcessorBox::object_drop (this=0x59937d8, 
    source=0xcaacf30, position=0x0, context=...)
    at ../gtk2_ardour/processor_box.cc:2018
#10 0x0000000000e44f13 in sigc::bound_mem_functor3<void, ProcessorBox, Gtkmm2ext::DnDVBox<ProcessorEntry>*, ProcessorEntry*, Glib::RefPtr<Gdk::DragContext> const&>::operator() (this=0x599d078, _A_a1=@0x19298a0: 0xcaacf30, 
    _A_a2=@0x7fff116bf7e0: 0x0, _A_a3=...)
    at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:2220
---Type <return> to continue, or q <return> to quit---
#11 0x0000000000e41bf8 in sigc::adaptor_functor<sigc::bound_mem_functor3<void, ProcessorBox, Gtkmm2ext::DnDVBox<ProcessorEntry>*, ProcessorEntry*, Glib::RefPtr<Gdk::DragContext> const&> >::operator()<Gtkmm2ext::DnDVBox<ProcessorEntry>* const&, ProcessorEntry* const&, Glib::RefPtr<Gdk::DragContext> const&> (
    this=0x599d070, _A_arg1=@0x19298a0: 0xcaacf30, 
    _A_arg2=@0x7fff116bf7e0: 0x0, _A_arg3=...)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:128
#12 0x0000000000e3dc8d in sigc::internal::slot_call3<sigc::bound_mem_functor3<void, ProcessorBox, Gtkmm2ext::DnDVBox<ProcessorEntry>*, ProcessorEntry*, Glib::RefPtr<Gdk::DragContext> const&>, void, Gtkmm2ext::DnDVBox<ProcessorEntry>*, ProcessorEntry*, Glib::RefPtr<Gdk::DragContext> const&>::call_it (rep=0x599d040, 
    a_1=@0x19298a0: 0xcaacf30, a_2=@0x7fff116bf7e0: 0x0, a_3=...)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:223
#13 0x0000000000e41522 in sigc::internal::signal_emit3<void, Gtkmm2ext::DnDVBox<ProcessorEntry>*, ProcessorEntry*, Glib::RefPtr<Gdk::DragContext> const&, sigc::nil>::emit (impl=0x599d0d0, _A_a1=@0x19298a0: 0xcaacf30, 
    _A_a2=@0x7fff116bf7e0: 0x0, _A_a3=...)
    at /usr/include/sigc++-2.0/sigc++/signal.h:1515
#14 0x0000000000e3d5fe in sigc::signal3<void, Gtkmm2ext::DnDVBox<ProcessorEntry>*, ProcessorEntry*, Glib::RefPtr<Gdk::DragContext> const&, sigc::nil>::emit (
    this=0x5993958, _A_a1=@0x19298a0: 0xcaacf30, _A_a2=@0x7fff116bf7e0: 0x0, 
    _A_a3=...) at /usr/include/sigc++-2.0/sigc++/signal.h:3134
#15 0x0000000000e398e0 in sigc::signal3<void, Gtkmm2ext::DnDVBox<ProcessorEntry>---Type <return> to continue, or q <return> to quit---
*, ProcessorEntry*, Glib::RefPtr<Gdk::DragContext> const&, sigc::nil>::operator() (this=0x5993958, _A_a1=@0x19298a0: 0xcaacf30, _A_a2=@0x7fff116bf7e0: 0x0, 
    _A_a3=...) at /usr/include/sigc++-2.0/sigc++/signal.h:3142
#16 0x0000000000e357e6 in Gtkmm2ext::DnDVBox<ProcessorEntry>::drag_data_received (this=0x5993910, context=..., y=164, selection_data=..., time=202859480)
    at /home/colinf/src/ardour2/ardour/libs/gtkmm2ext/gtkmm2ext/dndvbox.h:411
#17 0x0000000000e4780f in sigc::bound_mem_functor6<void, Gtkmm2ext::DnDVBox<ProcessorEntry>, Glib::RefPtr<Gdk::DragContext> const&, int, int, Gtk::SelectionData const&, unsigned int, unsigned int>::operator() (this=0x599c418, _A_a1=..., 
    _A_a2=@0x7fff116bf9cc: 45, _A_a3=@0x7fff116bf9c8: 164, _A_a4=..., 
    _A_a5=@0x7fff116bf9c4: 0, _A_a6=@0x7fff116bfa20: 202859480)
    at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:2469
#18 0x0000000000e44bef in sigc::adaptor_functor<sigc::bound_mem_functor6<void, Gtkmm2ext::DnDVBox<ProcessorEntry>, Glib::RefPtr<Gdk::DragContext> const&, int, int, Gtk::SelectionData const&, unsigned int, unsigned int> >::operator()<Glib::RefPtr<Gdk::DragContext> const&, int const&, int const&, Gtk::SelectionData const&, unsigned int const&, unsigned int const&> (this=0x599c410, _A_arg1=..., 
    _A_arg2=@0x7fff116bf9cc: 45, _A_arg3=@0x7fff116bf9c8: 164, _A_arg4=..., 
    _A_arg5=@0x7fff116bf9c4: 0, _A_arg6=@0x7fff116bfa20: 202859480)
    at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:194
#19 0x0000000000e41718 in sigc::internal::slot_call6<sigc::bound_mem_functor6<void, Gtkmm2ext::DnDVBox<ProcessorEntry>, Glib::RefPtr<Gdk::DragContext> const&, int, int, Gtk::SelectionData const&, unsigned int, unsigned int>, void, Glib::Ref---Type <return> to continue, or q <return> to quit---
Ptr<Gdk::DragContext> const&, int, int, Gtk::SelectionData const&, unsigned int, unsigned int>::call_it (rep=0x599c3e0, a_1=..., a_2=@0x7fff116bf9cc: 45, 
    a_3=@0x7fff116bf9c8: 164, a_4=..., a_5=@0x7fff116bf9c4: 0, 
    a_6=@0x7fff116bfa20: 202859480)
    at /usr/include/sigc++-2.0/sigc++/functors/slot.h:349
#20 0x00007f9cf05c88dd in ?? ()
   from /usr/lib/x86_64-linux-gnu/libgtkmm-2.4.so.1
#21 0x00007f9cf24c6e87 in ?? ()
   from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#22 0x00007f9cf3106fa5 in g_closure_invoke ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#23 0x00007f9cf3119264 in ?? ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#24 0x00007f9cf3121d5c in g_signal_emit_valist ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#25 0x00007f9cf3122555 in g_signal_emit_by_name ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#26 0x00007f9cf25f7359 in ?? ()
   from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#27 0x00007f9cf3106fa5 in g_closure_invoke ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007f9cf3118fc1 in ?? ()
   from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#29 0x00007f9cf3121d5c in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#30 0x00007f9cf3122555 in g_signal_emit_by_name () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#31 0x00007f9cf25257f3 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#32 0x00007f9cf2527183 in gtk_selection_convert () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#33 0x00007f9cf25fa07e in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#34 0x00007f9cf25f8060 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#35 0x00007f9cf24c361b in gtk_main_do_event () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#36 0x00007f9cf2137c9c in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
#37 0x00007f9cf2e301a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007f9cf2e30400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007f9cf2e30722 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007f9cf24c2567 in gtk_main () from /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0
#41 0x00007f9cf68acef6 in Gtkmm2ext::UI::run (this=0x1f5a0c0, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:286
#42 0x0000000000be9c30 in main (argc=1, argv=0x7fff116c0ce8) at ../gtk2_ardour/main.cc:408
(gdb)