Thread 45 "butler" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff9d79c640 (LWP 32440)]
0x00007fffecd0f43d in ?? () from /lib64/libc.so.6
(gdb) thread apply all bt

Thread 60 (Thread 0x7fff377fe640 (LWP 1052) "WaveViewDrawing"):
#0  0x00007fffecca91b9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff3021e4c in g_cond_wait () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff7b3c709 in ArdourWaveView::WaveViewDrawRequestQueue::dequeue (this=0x555565d6c218, block=true) at ../libs/waveview/wave_view_private.cc:299
#3  0x00007ffff7b3ca26 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:368
#4  0x00007ffff7b3cd84 in ArdourWaveView::WaveViewDrawingThread::run (this=0x55556841f410) at ../libs/waveview/wave_view_private.cc:450
#5  0x00007ffff7b414d0 in sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>::operator() (this=0x555565db1b68) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#6  0x00007ffff7b40ffa in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread> >::operator() (this=0x555565db1b60) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff7b409f3 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>, void>::call_it (rep=0x555565db1b30) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff356ac4d in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff30001e5 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#10 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#11 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 59 (Thread 0x7fff37fff640 (LWP 1051) "WaveViewDrawing"):
#0  0x00007fffecca91b9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff3021e4c in g_cond_wait () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff7b3c709 in ArdourWaveView::WaveViewDrawRequestQueue::dequeue (this=0x555565d6c218, block=true) at ../libs/waveview/wave_view_private.cc:299
#3  0x00007ffff7b3ca26 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:368
#4  0x00007ffff7b3cd84 in ArdourWaveView::WaveViewDrawingThread::run (this=0x555565697c60) at ../libs/waveview/wave_view_private.cc:450
#5  0x00007ffff7b414d0 in sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>::operator() (this=0x555565db19a8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#6  0x00007ffff7b40ffa in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread> >::operator() (this=0x555565db19a0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff7b409f3 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>, void>::call_it (rep=0x555565db1970) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff356ac4d in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff30001e5 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#10 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#11 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 58 (Thread 0x7fff64ffa640 (LWP 1050) "WaveViewDrawing"):
#0  0x00007fffecca91b9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff3021e4c in g_cond_wait () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff7b3c709 in ArdourWaveView::WaveViewDrawRequestQueue::dequeue (this=0x555565d6c218, block=true) at ../libs/waveview/wave_view_private.cc:299
#3  0x00007ffff7b3ca26 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:368
#4  0x00007ffff7b3cd84 in ArdourWaveView::WaveViewDrawingThread::run (this=0x555568173e70) at ../libs/waveview/wave_view_private.cc:450
#5  0x00007ffff7b414d0 in sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>::operator() (this=0x5555676c2828) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#6  0x00007ffff7b40ffa in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread> >::operator() (this=0x5555676c2820) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff7b409f3 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>, void>::call_it (rep=0x5555676c27f0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff356ac4d in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff30001e5 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#10 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#11 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 57 (Thread 0x7fff657fb640 (LWP 1049) "WaveViewDrawing"):
#0  0x00007fffecca91b9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff3021e4c in g_cond_wait () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff7b3c709 in ArdourWaveView::WaveViewDrawRequestQueue::dequeue (this=0x555565d6c218, block=true) at ../libs/waveview/wave_view_private.cc:299
#3  0x00007ffff7b3ca26 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:368
#4  0x00007ffff7b3cd84 in ArdourWaveView::WaveViewDrawingThread::run (this=0x555568380ac0) at ../libs/waveview/wave_view_private.cc:450
#5  0x00007ffff7b414d0 in sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>::operator() (this=0x555565da7248) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#6  0x00007ffff7b40ffa in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread> >::operator() (this=0x555565da7240) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff7b409f3 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>, void>::call_it (rep=0x555565da7210) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff356ac4d in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff30001e5 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#10 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#11 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 56 (Thread 0x7fff65ffc640 (LWP 1048) "WaveViewDrawing"):
#0  0x00007fffecca91b9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff3021e4c in g_cond_wait () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff7b3c709 in ArdourWaveView::WaveViewDrawRequestQueue::dequeue (this=0x555565d6c218, block=true) at ../libs/waveview/wave_view_private.cc:299
#3  0x00007ffff7b3ca26 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:368
#4  0x00007ffff7b3cd84 in ArdourWaveView::WaveViewDrawingThread::run (this=0x555568098bd0) at ../libs/waveview/wave_view_private.cc:450
#5  0x00007ffff7b414d0 in sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>::operator() (this=0x5555676c3018) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#6  0x00007ffff7b40ffa in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread> >::operator() (this=0x5555676c3010) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff7b409f3 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>, void>::call_it (rep=0x5555676c2fe0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff356ac4d in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff30001e5 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#10 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#11 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 55 (Thread 0x7fff667fd640 (LWP 1047) "WaveViewDrawing"):
#0  0x00007fffecca91b9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff3021e4c in g_cond_wait () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff7b3c709 in ArdourWaveView::WaveViewDrawRequestQueue::dequeue (this=0x555565d6c218, block=true) at ../libs/waveview/wave_view_private.cc:299
#3  0x00007ffff7b3ca26 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:368
#4  0x00007ffff7b3cd84 in ArdourWaveView::WaveViewDrawingThread::run (this=0x5555683b6db0) at ../libs/waveview/wave_view_private.cc:450
#5  0x00007ffff7b414d0 in sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>::operator() (this=0x5555676cd3f8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#6  0x00007ffff7b40ffa in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread> >::operator() (this=0x5555676cd3f0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff7b409f3 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>, void>::call_it (rep=0x5555676cd3c0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff356ac4d in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff30001e5 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#10 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#11 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 54 (Thread 0x7fff66ffe640 (LWP 1046) "WaveViewDrawing"):
#0  0x00007fffecca91b9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff3021e4c in g_cond_wait () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff7b3c709 in ArdourWaveView::WaveViewDrawRequestQueue::dequeue (this=0x555565d6c218, block=true) at ../libs/waveview/wave_view_private.cc:299
#3  0x00007ffff7b3ca26 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:368
#4  0x00007ffff7b3cd84 in ArdourWaveView::WaveViewDrawingThread::run (this=0x5555683e2590) at ../libs/waveview/wave_view_private.cc:450
#5  0x00007ffff7b414d0 in sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>::operator() (this=0x5555677165f8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#6  0x00007ffff7b40ffa in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread> >::operator() (this=0x5555677165f0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff7b409f3 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>, void>::call_it (rep=0x5555677165c0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff356ac4d in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff30001e5 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#10 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#11 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 53 (Thread 0x7fffcaffd640 (LWP 946) "AutomationWatch"):
#0  0x00007fffecc76e81 in clock_nanosleep () from /lib64/libc.so.6
#1  0x00007fffecc7bf83 in nanosleep () from /lib64/libc.so.6
#2  0x00007ffff3001a38 in g_usleep () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff6acd3be in ARDOUR::AutomationWatch::thread (this=0x555576787260) at ../libs/ardour/automation_watch.cc:195
#4  0x00007ffff6ad2c01 in boost::_mfi::mf0<void, ARDOUR::AutomationWatch>::operator() (this=0x55556e065ea0, p=0x555576787260) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6ad2846 in boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list0> (this=0x55556e065eb0, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#6  0x00007ffff6ad1f67 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >::operator() (this=0x55556e065ea0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#7  0x00007ffff6ad1ee8 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=0x55556e065ea0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#8  0x00007ffff6ad1746 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=0x55556e065e70) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#9  0x00007ffff356ac4d in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglibmm-2.4.so.1
#10 0x00007ffff30001e5 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#11 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#12 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 52 (Thread 0x7fffcb7fe640 (LWP 945) "autoconnect"):
#0  0x00007fffef0f2145 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ffff70e9321 in ARDOUR::Session::auto_connect_thread_run (this=0x55555a9f8c00) at ../libs/ardour/session.cc:7145
#2  0x00007ffff70e9008 in ARDOUR::Session::auto_connect_thread (arg=0x55555a9f8c00) at ../libs/ardour/session.cc:7084
#3  0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#4  0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 51 (Thread 0x7fffca7fc640 (LWP 944) "SessionSignals"):
#0  0x00007fffef0f2145 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007ffff7162227 in ARDOUR::Session::emit_thread_run (this=0x55555a9f8c00) at ../libs/ardour/session_process.cc:1110
#2  0x00007ffff71621c4 in ARDOUR::Session::emit_thread (arg=0x55555a9f8c00) at ../libs/ardour/session_process.cc:1099
#3  0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#4  0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 46 (Thread 0x7fffc8a32640 (LWP 32441) "midiUI"):
#0  0x00007fffecca392f in poll () from /lib64/libc.so.6
#1  0x00007ffff2fd0d66 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff2fd10f2 in g_main_loop_run () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff420aae6 in BaseUI::main_thread (this=0x555557dbdb90) at ../libs/pbd/base_ui.cc:98
#4  0x00007ffff420ec08 in sigc::bound_mem_functor0<void, BaseUI>::operator() (this=0x55556985b508) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#5  0x00007ffff420e848 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator() (this=0x55556985b500) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#6  0x00007ffff420e289 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it (rep=0x55556985b4d0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#7  0x00007ffff356ac4d in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglibmm-2.4.so.1
#8  0x00007ffff30001e5 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#9  0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#10 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 45 (Thread 0x7fff9d79c640 (LWP 32440) "butler"):
#0  0x00007fffecd0f43d in ?? () from /lib64/libc.so.6
#1  0x00007ffff71f4ed2 in ARDOUR::SilentFileSource::read_unlocked (this=0x5555699f2160, dst=0x7fff9c5d8010, start=60547072, cnt=-47406) at ../libs/ardour/ardour/silentfilesource.h:58
#2  0x00007ffff6aa26fb in ARDOUR::AudioSource::read (this=0x5555699f2160, dst=0x7fff9c5d8010, start=60547072, cnt=262144) at ../libs/ardour/audiosource.cc:322
#3  0x00007ffff6a900b0 in ARDOUR::AudioRegion::read_from_sources (this=0x555570859780, srcs=std::vector of length 2, capacity 2 = {...}, limit=33675720, buf=0x7fff9c5d8010, position=60547072, cnt=262144, chan_n=0) at ../libs/ardour/audioregion.cc:747
#4  0x00007ffff6a8f287 in ARDOUR::AudioRegion::read_at (this=0x555570859780, buf=0x7fff9cdd9010, mixdown_buffer=0x7fff9c5d8010, gain_buffer=0x7fff677ff010, position=60547072, cnt=262144, chan_n=0) at ../libs/ardour/audioregion.cc:587
#5  0x00007ffff6a45187 in ARDOUR::AudioPlaylist::read (this=0x55556b39a170, buf=0x7fff9cdd9010, mixdown_buffer=0x7fff9c5d8010, gain_buffer=0x7fff677ff010, start=60547072, cnt=262144, chan_n=0) at ../libs/ardour/audio_playlist.cc:263
#6  0x00007ffff6b1c7f8 in ARDOUR::DiskReader::audio_read (this=0x5555760f81d0, sum_buffer=0x7fff9cdd9010, mixdown_buffer=0x7fff9c5d8010, gain_buffer=0x7fff677ff010, start=@0x7fff9d79ade8: 60547072, cnt=262144, rci=0x55555a962ad0, channel=0, reversed=false) at ../libs/ardour/disk_reader.cc:1048
#7  0x00007ffff6b1d9e0 in ARDOUR::DiskReader::refill_audio (this=0x5555760f81d0, sum_buffer=0x7fff9cdd9010, mixdown_buffer=0x7fff9c5d8010, gain_buffer=0x7fff677ff010, fill_level=0, reversed=false) at ../libs/ardour/disk_reader.cc:1306
#8  0x00007ffff6b1cdd1 in ARDOUR::DiskReader::refill (this=0x5555760f81d0, sum_buffer=0x7fff9cdd9010, mixdown_buffer=0x7fff9c5d8010, gain_buffer=0x7fff677ff010, fill_level=0, reversed=false) at ../libs/ardour/disk_reader.cc:1129
#9  0x00007ffff6b1cc3f in ARDOUR::DiskReader::do_refill (this=0x5555760f81d0) at ../libs/ardour/disk_reader.cc:1103
#10 0x00007ffff72277dc in ARDOUR::Track::do_refill (this=0x5555760e4f30) at ../libs/ardour/track.cc:499
#11 0x00007ffff6ae3a95 in ARDOUR::Butler::thread_work (this=0x5555587d1730) at ../libs/ardour/butler.cc:253
#12 0x00007ffff6ae2c51 in ARDOUR::Butler::_thread_work (arg=0x5555587d1730) at ../libs/ardour/butler.cc:153
#13 0x00007ffff4243c60 in fake_thread_start (arg=0x5555597e2680) at ../libs/pbd/pthread_utils.cc:113
#14 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#15 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 44 (Thread 0x7fff9d81d640 (LWP 32391) "RT-6-0x7fff9d81"):
#0  0x00007fffef0f49a4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007fffef0f4aa8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c02690 in PBD::Semaphore::wait (this=0x555557e0af00) at ../libs/pbd/pbd/semutils.h:64
#3  0x00007ffff6bffe2c in ARDOUR::Graph::run_one (this=0x555557e0ae50) at ../libs/ardour/graph.cc:426
#4  0x00007ffff6c002e4 in ARDOUR::Graph::helper_thread (this=0x555557e0ae50) at ../libs/ardour/graph.cc:470
#5  0x00007ffff6c06893 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fff9d81cc58, p=0x555557e0ae50) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#6  0x00007ffff6c06048 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fff9d81cc68, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#7  0x00007ffff6c054a5 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fff9d81cc58) at /home/ardour/linux-x86_64-v5/gtk/inst/include/bgtk/inst/include/boost/function/function_template.hpp:769
#10 0x00007fffd12ddd9f in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555a9f8250) at ../libs/backends/jack/jack_audiobackend.cc:953
#11 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#12 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 43 (Thread 0x7fff9d89e640 (LWP 32390) "RT-5-0x7fff9d89"):
#0  0x00007fffef0f49a4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007fffef0f4aa8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c02690 in PBD::Semaphore::wait (this=0x555557e0af00) at ../libs/pbd/pbd/semutils.h:64
#3  0x00007ffff6bffe2c in ARDOUR::Graph::run_one (this=0x555557e0ae50) at ../libs/ardour/graph.cc:426
#4  0x00007ffff6c002e4 in ARDOUR::Graph::helper_thread (this=0x555557e0ae50) at ../libs/ardour/graph.cc:470
#5  0x00007ffff6c06893 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fff9d89dc58, p=0x555557e0ae50) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#6  0x00007ffff6c06048 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fff9d89dc68, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#7  0x00007ffff6c054a5 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fff9d89dc58) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#8  0x00007ffff6c04d49 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 /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#9  0x0000555555bac856 in boost::function0<void>::operator() (this=0x7fff9d89dc50) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#10 0x00007fffd12ddd9f in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555a9f80b0) at ../libs/backends/jack/jack_audiobackend.cc:953
#11 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#12 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 42 (Thread 0x7fff9d91f640 (LWP 32389) "RT-4-0x7fff9d91"):
#0  0x00007fffef0f49a4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007fffef0f4aa8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c02690 in PBD::Semaphore::wait (this=0x555557e0af00) at ../libs/pbd/pbd/semutils.h:64
#3  0x00007ffff6bffe2c in ARDOUR::Graph::run_one (this=0x555557e0ae50) at ../libs/ardour/graph.cc:426
#4  0x00007ffff6c002e4 in ARDOUR::Graph::helper_thread (this=0x555557e0ae50) at ../libs/ardour/graph.cc:470
#5  0x00007ffff6c06893 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fff9d91ec58, p=0x555557e0ae50) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#6  0x00007ffff6c06048 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fff9d91ec68, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#7  0x00007ffff6c054a5 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fff9d91ec58) at /home/ardour/linux-x86_64-v5/gtk/i::JACKAudioBackend::_start_process_thread (arg=0x55555a9f7ec0) at ../libs/backends/jack/jack_audiobackend.cc:953
#11 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#12 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 41 (Thread 0x7fff9d9a0640 (LWP 32388) "RT-3-0x7fff9d9a"):
#0  0x00007fffef0f49a4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007fffef0f4aa8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c02690 in PBD::Semaphore::wait (this=0x555557e0af00) at ../libs/pbd/pbd/semutils.h:64
#3  0x00007ffff6bffe2c in ARDOUR::Graph::run_one (this=0x555557e0ae50) at ../libs/ardour/graph.cc:426
#4  0x00007ffff6c002e4 in ARDOUR::Graph::helper_thread (this=0x555557e0ae50) at ../libs/ardour/graph.cc:470
#5  0x00007ffff6c06893 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fff9d99fc58, p=0x555557e0ae50) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#6  0x00007ffff6c06048 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fff9d99fc68, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#7  0x00007ffff6c054a5 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fff9d99fc58) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#8  0x00007ffff6c04d49 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 /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#9  0x0000555555bac856 in boost::function0<void>::operator() (this=0x7fff9d99fc50) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#10 0x00007fffd12ddd9f in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555a9f7d20) at ../libs/backends/jack/jack_audiobackend.cc:953
#11 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#12 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 40 (Thread 0x7fffc80e7640 (LWP 32387) "RT-2-0x7fffc80e"):
#0  0x00007fffef0f49a4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007fffef0f4aa8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c02690 in PBD::Semaphore::wait (this=0x555557e0af28) at ../libs/pbd/pbd/semutils.h:64
#3  0x00007ffff6bff1bc in ARDOUR::Graph::reached_terminal_node (this=0x555557e0ae50) at ../libs/ardour/graph.cc:301
#4  0x00007ffff6c06f5b in ARDOUR::GraphNode::finish (this=0x5555760860f0, chain=0) at ../libs/ardour/graphnode.cc:73
#5  0x00007ffff6c026fa in ARDOUR::GraphNode::run (this=0x5555760860f0, chain=0) at ../libs/ardour/ardour/graphnode.h:63
#6  0x00007ffff6bfff9a in ARDOUR::Graph::run_one (this=0x555557e0ae50) at ../libs/ardour/graph.cc:442
#7  0x00007ffff6c002e4 in ARDOUR::Graph::helper_thread (this=0x555557e0ae50) at ../libs/ardour/graph.cc:470
#8  0x00007ffff6c06893 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffc80e6c58, p=0x555557e0ae50) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#9  0x00007ffff6c06048 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffc80e6c68, f=..., a=...) at /home/ardour/linux-x86_6ion/function_template.hpp:159
#12 0x0000555555bac856 in boost::function0<void>::operator() (this=0x7fffc80e6c50) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#13 0x00007fffd12ddd9f in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555854a3f0) at ../libs/backends/jack/jack_audiobackend.cc:953
#14 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#15 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 39 (Thread 0x7fffc8168640 (LWP 32386) "RT-1-0x7fffc816"):
#0  0x00007fffef0f49a4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007fffef0f4aa8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c02690 in PBD::Semaphore::wait (this=0x555557e0af00) at ../libs/pbd/pbd/semutils.h:64
#3  0x00007ffff6bffe2c in ARDOUR::Graph::run_one (this=0x555557e0ae50) at ../libs/ardour/graph.cc:426
#4  0x00007ffff6c002e4 in ARDOUR::Graph::helper_thread (this=0x555557e0ae50) at ../libs/ardour/graph.cc:470
#5  0x00007ffff6c06893 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffc8167c58, p=0x555557e0ae50) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#6  0x00007ffff6c06048 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffc8167c68, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#7  0x00007ffff6c054a5 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (this=0x7fffc8167c58) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#8  0x00007ffff6c04d49 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 /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#9  0x0000555555bac856 in boost::function0<void>::operator() (this=0x7fffc8167c50) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#10 0x00007fffd12ddd9f in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x555557e1c5d0) at ../libs/backends/jack/jack_audiobackend.cc:953
#11 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#12 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 38 (Thread 0x7fffc81e9640 (LWP 32385) "RT-main-0x7fffc"):
#0  0x00007fffef0f49a4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007fffef0f4aa8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c02690 in PBD::Semaphore::wait (this=0x555557e0af00) at ../libs/pbd/pbd/semutils.h:64
#3  0x00007ffff6bffe2c in ARDOUR::Graph::run_one (this=0x555557e0ae50) at ../libs/ardour/graph.cc:426
#4  0x00007ffff6c006c6 in ARDOUR::Graph::main_thread (this=0x555557e0ae50) at ../libs/ardour/graph.cc:523
#5  0x00007ffff6c06893 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffc81e8c58, p=0x555557e0ae50) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#6  0x00007ffff6c06048 in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (this=0x7fffc81e8c68, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#7  0x00007ffff6c054a5 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, t::function0<void>::operator() (this=0x7fffc81e8c50) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#10 0x00007fffd12ddd9f in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x555558549b80) at ../libs/backends/jack/jack_audiobackend.cc:953
#11 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#12 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 37 (Thread 0x7fffc81f4900 (LWP 32384) "RTTaskList"):
#0  0x00007fffef0f49a4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007fffef0f4aa8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c02690 in PBD::Semaphore::wait (this=0x5555586467a0) at ../libs/pbd/pbd/semutils.h:64
#3  0x00007ffff70ab53d in ARDOUR::RTTaskList::run (this=0x555558646770) at ../libs/ardour/rt_tasklist.cc:112
#4  0x00007ffff70ab32a in ARDOUR::RTTaskList::_thread_run (arg=0x555558646770) at ../libs/ardour/rt_tasklist.cc:68
#5  0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#6  0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 36 (Thread 0x7fffc8200900 (LWP 32383) "RTTaskList"):
#0  0x00007fffef0f49a4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007fffef0f4aa8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c02690 in PBD::Semaphore::wait (this=0x5555586467a0) at ../libs/pbd/pbd/semutils.h:64
#3  0x00007ffff70ab53d in ARDOUR::RTTaskList::run (this=0x555558646770) at ../libs/ardour/rt_tasklist.cc:112
#4  0x00007ffff70ab32a in ARDOUR::RTTaskList::_thread_run (arg=0x555558646770) at ../libs/ardour/rt_tasklist.cc:68
#5  0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#6  0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 35 (Thread 0x7fffc820c900 (LWP 32382) "RTTaskList"):
#0  0x00007fffef0f49a4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007fffef0f4aa8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c02690 in PBD::Semaphore::wait (this=0x5555586467a0) at ../libs/pbd/pbd/semutils.h:64
#3  0x00007ffff70ab53d in ARDOUR::RTTaskList::run (this=0x555558646770) at ../libs/ardour/rt_tasklist.cc:112
#4  0x00007ffff70ab32a in ARDOUR::RTTaskList::_thread_run (arg=0x555558646770) at ../libs/ardour/rt_tasklist.cc:68
#5  0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#6  0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 34 (Thread 0x7fffc8218900 (LWP 32381) "RTTaskList"):
#0  0x00007fffef0f49a4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007fffef0f4aa8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c02690 in PBD::Semaphore::wait (this=0x5555586467a0) at ../libs/pbd/pbd/semutils.h:64
#3  0x00007ffff70ab53d in ARDOUR::RTTaskList::run (this=0x555558646770) at ../libs/ardour/rt_tasklist.cc:112
#4  0x00007ffff70ab32a in ARDOUR::RTTaskList::_thread_run (arg=0x555558646770) at ../libs/ardour/rt_tasklist.cc:68
#5  0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#6  0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 33 (Thread 0x7fffc8224900 (LWP 32380) "RTTaskList"):
#0  0x00007fffef0f49a4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007fffef0f4aa8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c02690 in PBD::Semaphore::wait (this=0x5555586467a0) at ../libs/pbd/pbd/semutils.h:64
#3  0x00007ffff70ab53d in ARDOUR::RTTaskList::run (this=0x555558646770) at ../libs/ardour/rt_tasklisbc.so.6

Thread 31 (Thread 0x7fffc9c88900 (LWP 32378) "RTTaskList"):
#0  0x00007fffef0f49a4 in do_futex_wait.constprop () from /lib64/libpthread.so.0
#1  0x00007fffef0f4aa8 in __new_sem_wait_slow.constprop.0 () from /lib64/libpthread.so.0
#2  0x00007ffff6c02690 in PBD::Semaphore::wait (this=0x5555586467a0) at ../libs/pbd/pbd/semutils.h:64
#3  0x00007ffff70ab53d in ARDOUR::RTTaskList::run (this=0x555558646770) at ../libs/ardour/rt_tasklist.cc:112
#4  0x00007ffff70ab32a in ARDOUR::RTTaskList::_thread_run (arg=0x555558646770) at ../libs/ardour/rt_tasklist.cc:68
#5  0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#6  0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 25 (Thread 0x7fffd0169640 (LWP 32166) "audioengine"):
#0  0x00007fffecca91b9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff3021e4c in g_cond_wait () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff6ae5b84 in ARDOUR::Butler::wait_until_finished (this=0x5555587d1730) at ../libs/ardour/butler.cc:463
#3  0x00007ffff7141d26 in ARDOUR::Session::process_export (this=0x55555a9f8c00, nframes=128) at ../libs/ardour/session_export.cc:243
#4  0x00007ffff71422aa in ARDOUR::Session::process_export_fw (this=0x55555a9f8c00, nframes=128) at ../libs/ardour/session_export.cc:364
#5  0x00007ffff714538b in boost::_mfi::mf1<void, ARDOUR::Session, unsigned int>::operator() (this=0x7fffac011d08, p=0x55555a9f8c00, a1=128) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:165
#6  0x00007ffff7144efe in boost::_bi::list2<boost::_bi::value<ARDOUR::Session*>, boost::arg<1> >::operator()<boost::_mfi::mf1<void, ARDOUR::Session, unsigned int>, boost::_bi::rrlist1<unsigned int> > (this=0x7fffac011d18, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:319
#7  0x00007ffff7144930 in boost::_bi::bind_t<void, boost::_mfi::mf1<void, ARDOUR::Session, unsigned int>, boost::_bi::list2<boost::_bi::value<ARDOUR::Session*>, boost::arg<1> > >::operator()<unsigned int> (this=0x7fffac011d08, a1=@0x7fffd0168944: 128) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1306
#8  0x00007ffff7143c87 in boost::detail::function::void_function_obj_invoker1<boost::_bi::bind_t<void, boost::_mfi::mf1<void, ARDOUR::Session, unsigned int>, boost::_bi::list2<boost::_bi::value<ARDOUR::Session*>, boost::arg<1> > >, void, unsigned int>::invoke (function_obj_ptr=..., a0=128) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#9  0x0000555555bfc933 in boost::function1<void, unsigned int>::operator() (this=0x7fffac011d00, a0=128) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#10 0x00005555567938a8 in PBD::Signal1<void, unsigned int, PBD::OptionalLastValue<void> >::operator() (this=0x5555571bba28, a1=128) at libs/pbd/pbd/signals_generated.h:704
#11 0x00007ffff6a6ebd6 in ARDOUR::AudioEngine::process_callback (this=0x5555571bb6a0, nframes=128) at ../libs/ardour/audioengine.cc:486
#12 0x00007fffd12dde69 in ARDOUR::JACKAudioBackend::process_thread (this=0x555557541c70) at ../libs/backends/jack/jack_audiobackend.cc:984
#13 0x00007fffd12dddee in ARDOUR::JACKAudioBackend::_process_thread (arg=0x555557541c70) at ../libs/backends/jack/jack_audiobackend.cc:961
#14 0x00007fffd1226a4b in ?? () from /usr/lib64/libjack.so.0
#15 0x00007fffd124314c in ?? () from /usr/lib64/libjack.so.0
#16 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#17 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 24 (Thread 0x7fff18) "gmain"):
#0  0x00007fffecca392f in poll () from /lib64/libc.so.6
#1  0x00007ffff2fd0d66 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff2fd0e7c in g_main_context_iteration () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff2fd0ec1 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#4  0x00007ffff30001e5 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#5  0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#6  0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7fffc9c7d640 (LWP 31499) "DeviceList"):
#0  0x00007fffecca91b9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff3021e4c in g_cond_wait () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff6a6f777 in ARDOUR::AudioEngine::do_devicelist_update (this=0x5555571bb6a0) at ../libs/ardour/audioengine.cc:703
#3  0x00007ffff6a7d80b in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x55555759d760, p=0x5555571bb6a0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff6a7d1b2 in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (this=0x55555759d770, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#5  0x00007ffff6a7c81f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x55555759d760) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#6  0x00007ffff6a7beb2 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=0x55555759d760) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff6a7af2e 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=0x55555759d730) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff356ac4d in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff30001e5 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#10 0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#11 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7fffe1e9b640 (LWP 31498) "EngineWatchdog"):
#0  0x00007fffecca91b9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff3021e4c in g_cond_wait () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff6a6f53e in ARDOUR::AudioEngine::do_reset_backend (this=0x5555571bb6a0) at ../libs/ardour/audioengine.cc:667
#3  0x00007ffff6a7d80b in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x55555759d7b0, p=0x5555571bb6a0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff6a7d1b2 in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (this=0x55555759d7c0, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#5  0x00007ffff6a7c81f in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x55555759d7b0) at /home/ardour/linux-x86_64-v5/gtk/ins () from /lib64/libc.so.6

Thread 5 (Thread 0x7fffe2ffd640 (LWP 31400) "Analyzer"):
#0  0x00007fffecca91b9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff3021e4c in g_cond_wait () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff6a234a0 in ARDOUR::Analyser::work () at ../libs/ardour/analyser.cc:93
#3  0x00007ffff6a2328c in analyser_work () at ../libs/ardour/analyser.cc:58
#4  0x000055555644cd21 in sigc::pointer_functor0<void>::operator() (this=0x5555571cc538) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#5  0x0000555556449e54 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x5555571cc530) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#6  0x0000555556445cdd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x5555571cc500) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#7  0x00007ffff356ac4d in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglibmm-2.4.so.1
#8  0x00007ffff30001e5 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#9  0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#10 0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7fffe37fe640 (LWP 31399) "PeakFileBuilder"):
#0  0x00007fffecca91b9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff3021e4c in g_cond_wait () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff71f2c9e in peak_thread_work () at ../libs/ardour/source_factory.cc:74
#3  0x000055555644cd21 in sigc::pointer_functor0<void>::operator() (this=0x5555571cc658) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x0000555556449e54 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x5555571cc650) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#5  0x0000555556445cdd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x5555571cc620) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff356ac4d in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglibmm-2.4.so.1
#7  0x00007ffff30001e5 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#8  0x00007fffef0ebf9e in start_thread () from /lib64/libpthread.so.0
#9  0x00007fffeccae64f in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7fffe3fff640 (LWP 31397) "PeakFileBuilder"):
#0  0x00007fffecca91b9 in syscall () from /lib64/libc.so.6
#1  0x00007ffff3021e4c in g_cond_wait () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff71f2c9e in peak_thread_work () at ../libs/ardour/source_factory.cc:74
#3  0x000055555644cd21 in sigc::pointer_functor0<void>::operator() (this=0x5555571cc6a8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x0000555556449e54 in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x5555571cc6a0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#5  0x0000555556445cdd in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x5555571cc670) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff356ac4d in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglibmm-2.4.so.1
#7  0x00007ffff30001e5 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#8  0x00007fffef0ebf9e in start_thread () from /lib64/libpgc::bound_mem_functor0<void, ExportDialog>::operator() (this=0x55557aca19f8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#6  0x0000555555f7cabc in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ExportDialog> >::operator() (this=0x55557aca19f0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x0000555555f7c20f in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ExportDialog>, void>::call_it (rep=0x55557aca19c0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff3579c88 in Glib::SignalProxyNormal::slot0_void_callback(_GObject*, void*) () from /opt/Ardour-6.5.199-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff32df945 in g_closure_invoke () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#10 0x00007ffff32f101b in ?? () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#11 0x00007ffff32fac30 in g_signal_emit_valist () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#12 0x00007ffff32fb082 in g_signal_emit () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#13 0x00007ffff24dcd82 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#14 0x00007ffff32dfb74 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#15 0x00007ffff32fa904 in g_signal_emit_valist () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#16 0x00007ffff32fb082 in g_signal_emit () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#17 0x00007ffff24daf92 in gtk_button_released () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#18 0x00007ffff24db059 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#19 0x00007ffff25c3cac in ?? () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#20 0x00007ffff32df89f in g_closure_invoke () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#21 0x00007ffff32f15a0 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#22 0x00007ffff32fa69b in g_signal_emit_valist () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#23 0x00007ffff32fb082 in g_signal_emit () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#24 0x00007ffff274864c in ?? () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#25 0x00007ffff25c229d in gtk_propagate_event () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#26 0x00007ffff25c2723 in gtk_main_do_event () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#27 0x00007ffff21deb4c in ?? () from /opt/Ardour-6.5.199-dbg/lib/libgdk-x11-2.0.so.0
#28 0x00007ffff2fd0b67 in g_main_context_dispatch () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#29 0x00007ffff2fd0dd0 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#30 0x00007ffff2fd10f2 in g_main_loop_run () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#31 0x00007ffff251fa48 in gtk_dialog_run () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#32 0x0000555555e38b2c in Editor::export_audio (this=0x555557b39b10) at ../gtk2_ardour/editor_export_audio.cc:78
#33 0x0000555555c41ddc in sigc::bound_mem_functor0<void, PublicEditor>::operator() (this=0x55555b278838) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#34 0x0000555555c40bd6 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, PublicEditor> >::operator() (this=0x55555b278830) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#35 0x0000555555c3f091 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, PublicEditor>, void>::call_it (rep=0x55555b278800) x11-2.0.so.0
#48 0x00007ffff25dd7a2 in gtk_menu_shell_activate_item () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#49 0x00007ffff25ddbf6 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#50 0x00007ffff25cf7f6 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#51 0x00007ffff25c3cac in ?? () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#52 0x00007ffff32df945 in g_closure_invoke () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#53 0x00007ffff32f15a0 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#54 0x00007ffff32fa69b in g_signal_emit_valist () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#55 0x00007ffff32fb082 in g_signal_emit () from /opt/Ardour-6.5.199-dbg/lib/libgobject-2.0.so.0
#56 0x00007ffff274864c in ?? () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#57 0x00007ffff25c229d in gtk_propagate_event () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#58 0x00007ffff25c2723 in gtk_main_do_event () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#59 0x00007ffff21deb4c in ?? () from /opt/Ardour-6.5.199-dbg/lib/libgdk-x11-2.0.so.0
#60 0x00007ffff2fd0b67 in g_main_context_dispatch () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#61 0x00007ffff2fd0dd0 in ?? () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#62 0x00007ffff2fd10f2 in g_main_loop_run () from /opt/Ardour-6.5.199-dbg/lib/libglib-2.0.so.0
#63 0x00007ffff25c13e7 in gtk_main () from /opt/Ardour-6.5.199-dbg/lib/libgtk-x11-2.0.so.0
#64 0x00007ffff45ee0fe in Gtkmm2ext::UI::run (this=0x5555574b8590, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:310
#65 0x000055555617ef93 in main (argc=1, argv=0x7fffffffcbd8) at ../gtk2_ardour/main.cc:410