Thread 165 (Thread 0x7fff16ffd6c0 (LWP 17284) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 164 (Thread 0x7fff177fe6c0 (LWP 17283) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 163 (Thread 0x7fff17fff6c0 (LWP 17282) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 162 (Thread 0x7fff1cff96c0 (LWP 17281) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 161 (Thread 0x7fff1d7fa6c0 (LWP 17280) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 160 (Thread 0x7fff1dffb6c0 (LWP 17279) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 159 (Thread 0x7fff1e7fc6c0 (LWP 17278) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 158 (Thread 0x7fff1effd6c0 (LWP 17277) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
--Type <RET> for more, q to quit, c to continue without paging--c
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 157 (Thread 0x7fff1f7fe6c0 (LWP 17276) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 156 (Thread 0x7fff1ffff6c0 (LWP 17275) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 155 (Thread 0x7fff248426c0 (LWP 17274) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 154 (Thread 0x7fff276cc6c0 (LWP 17273) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 153 (Thread 0x7fff588036c0 (LWP 17272) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 152 (Thread 0x7fffbd30d6c0 (LWP 17271) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 151 (Thread 0x7fffa6ffd6c0 (LWP 17270) "ArdourGUI"):
#0  futex_wait (val=8, addr=0x555560090304) at /usr/src/debug/gcc/gcc/libgomp/config/linux/x86/futex.h:97
#1  do_wait (val=8, addr=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/config/linux/wait.h:67
#2  gomp_barrier_wait_end (bar=0x555560090300, state=8) at /usr/src/debug/gcc/gcc/libgomp/config/linux/bar.c:48
#3  0x00007fffe160dc70 in gomp_simple_barrier_wait (bar=0x555560090300) at /usr/src/debug/gcc/gcc/libgomp/config/posix/simple-bar.h:60
#4  gomp_thread_start (xdata=<optimized out>) at /usr/src/debug/gcc/gcc/libgomp/team.c:133
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 119 (Thread 0x7fff590046c0 (LWP 17237) "AutomationWatch"):
#0  0x00007ffff28d5835 in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=req@entry=0x7fff59003720, rem=rem@entry=0x7fff59003730) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
#1  0x00007ffff28e7ef7 in __GI___nanosleep (req=req@entry=0x7fff59003720, rem=rem@entry=0x7fff59003730) at ../sysdeps/unix/sysv/linux/nanosleep.c:25
#2  0x00007ffff4d47319 in g_usleep (microseconds=<optimized out>) at ../glib/glib/gtimer.c:282
#3  g_usleep (microseconds=<optimized out>) at ../glib/glib/gtimer.c:270
#4  0x00007ffff6c0e613 in ARDOUR::AutomationWatch::thread() (this=0x55555ce10f60) at ../libs/ardour/automation_watch.cc:207
#5  0x00007ffff6c13d99 in boost::_mfi::mf0<void, ARDOUR::AutomationWatch>::operator()(ARDOUR::AutomationWatch*) const (this=0x55555ce66790, p=0x55555ce10f60) at /usr/include/boost/bind/mem_fn_template.hpp:49
#6  0x00007ffff6c13a1f in boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>&, boost::_bi::list0&, int) (this=0x55555ce667a0, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#7  0x00007ffff6c13414 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >::operator()() (this=0x55555ce66790) at /usr/include/boost/bind/bind.hpp:1274
#8  0x00007ffff6c12e16 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#9  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x55555ce66788) at /usr/include/boost/function/function_template.hpp:771
#10 0x00007ffff5539cb9 in PBD::Thread::_run(void*) (arg=0x55555ce66760) at ../libs/pbd/pthread_utils.cc:488
#11 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#12 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 118 (Thread 0x7fff598056c0 (LWP 17236) "autoconnect"):
#0  0x00007ffff28894ae in __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x555558e5a294) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x555558e5a294, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007ffff288952f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x555558e5a294, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007ffff288bd40 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555558e5a240, cond=0x555558e5a268) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555558e5a268, mutex=0x555558e5a240) at pthread_cond_wait.c:618
#5  0x00007ffff71247b7 in ARDOUR::Session::auto_connect_thread_run() (this=0x555558e58110) at ../libs/ardour/session.cc:7613
#6  0x00007ffff7124167 in ARDOUR::Session::auto_connect_thread(void*) (arg=0x555558e58110) at ../libs/ardour/session.cc:7544
#7  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#8  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 117 (Thread 0x7fff5a0066c0 (LWP 17235) "SessionSignals"):
#0  0x00007ffff28894ae in __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x555558e5a220) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x555558e5a220, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007ffff288952f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x555558e5a220, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007ffff288bd40 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555558e5a1d0, cond=0x555558e5a1f8) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555558e5a1f8, mutex=0x555558e5a1d0) at pthread_cond_wait.c:618
#5  0x00007ffff71b9b16 in ARDOUR::Session::emit_thread_run() (this=0x555558e58110) at ../libs/ardour/session_process.cc:1232
#6  0x00007ffff71b9abf in ARDOUR::Session::emit_thread(void*) (arg=0x555558e58110) at ../libs/ardour/session_process.cc:1221
#7  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#8  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 116 (Thread 0x7fffa4ff96c0 (LWP 17234) "ArdourGUI"):
#0  0x00007ffff290359f in __GI___poll (fds=fds@entry=0x7fff44003060, nfds=nfds@entry=2, timeout=timeout@entry=60000) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff348c6e5 in poll (__timeout=60000, __nfds=2, __fds=0x7fff44003060) at /usr/include/bits/poll2.h:39
#2  usbi_wait_for_events (timeout_ms=60000, reported_events=0x7fffa4ff87d0, ctx=0x55555cde5000) at os/events_posix.c:226
#3  handle_events (ctx=ctx@entry=0x55555cde5000, tv=tv@entry=0x7fffa4ff8840) at /usr/src/debug/libusb/libusb-1.0.26/libusb/io.c:2244
#4  0x00007ffff348e468 in libusb_handle_events_timeout_completed (ctx=0x55555cde5000, tv=tv@entry=0x7fffa4ff8890, completed=completed@entry=0x0) at /usr/src/debug/libusb/libusb-1.0.26/libusb/io.c:2361
#5  0x00007ffff348e4bf in libusb_handle_events (ctx=<optimized out>) at /usr/src/debug/libusb/libusb-1.0.26/libusb/io.c:2436
#6  0x00007ffff6c3e3a7 in usb_hotplug_thread(void*) (user_data=0x5555574fece0) at ../libs/ardour/control_protocol_manager.cc:87
#7  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#8  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 115 (Thread 0x7fffa57fa6c0 (LWP 17233) "libusb_event"):
#0  0x00007ffff290359f in __GI___poll (fds=fds@entry=0x7fffa57f98a0, nfds=nfds@entry=2, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff3488aa6 in poll (__timeout=-1, __nfds=2, __fds=0x7fffa57f98a0, __fds=<optimized out>, __nfds=<optimized out>, __timeout=<optimized out>) at /usr/include/bits/poll2.h:39
#2  linux_udev_event_thread_main (arg=<optimized out>) at os/linux_udev.c:183
#3  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#4  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 114 (Thread 0x7fffa5ffb6c0 (LWP 17232) "midiUI"):
#0  0x00007ffff290359f in __GI___poll (fds=0x7fff3803f2a0, nfds=4, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff4d77206 in g_main_context_poll_unlocked (priority=2147483647, n_fds=4, fds=0x7fff3803f2a0, timeout=<optimized out>, context=0x55555cde3bf0) at ../glib/glib/gmain.c:4653
#2  g_main_context_iterate_unlocked.isra.0 (context=0x55555cde3bf0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4344
#3  0x00007ffff4d19b47 in g_main_loop_run (loop=0x55555cde3d90) at ../glib/glib/gmain.c:4551
#4  0x00007ffff54f647c in BaseUI::main_thread() (this=0x555558e52170) at ../libs/pbd/base_ui.cc:102
#5  0x00007ffff54fb2ed in boost::_mfi::mf0<void, BaseUI>::operator()(BaseUI*) const (this=0x55555cde3f60, p=0x555558e52170) at /usr/include/boost/bind/mem_fn_template.hpp:49
#6  0x00007ffff54fb06f in boost::_bi::list1<boost::_bi::value<BaseUI*> >::operator()<boost::_mfi::mf0<void, BaseUI>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, BaseUI>&, boost::_bi::list0&, int) (this=0x55555cde3f70, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#7  0x00007ffff54fac8a in boost::_bi::bind_t<void, boost::_mfi::mf0<void, BaseUI>, boost::_bi::list1<boost::_bi::value<BaseUI*> > >::operator()() (this=0x55555cde3f60) at /usr/include/boost/bind/bind.hpp:1274
#8  0x00007ffff54fa738 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, BaseUI>, boost::_bi::list1<boost::_bi::value<BaseUI*> > >, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#9  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x55555cde3f58) at /usr/include/boost/function/function_template.hpp:771
#10 0x00007ffff5539cb9 in PBD::Thread::_run(void*) (arg=0x55555cde3f30) at ../libs/pbd/pthread_utils.cc:488
#11 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#12 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 113 (Thread 0x7fffa40806c0 (LWP 17231) "butler"):
#0  0x00007ffff290359f in __GI___poll (fds=0x7fffa407f5f0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff550ff5b in CrossThreadChannel::poll_for_request() (this=0x5555588d1488) at ../libs/pbd/crossthread.posix.cc:108
#2  0x00007ffff550ffdd in CrossThreadChannel::receive(char&, bool) (this=0x5555588d1488, msg=@0x7fffa407f720: 48 '0', wait=true) at ../libs/pbd/crossthread.posix.cc:133
#3  0x00007ffff6c25475 in ARDOUR::Butler::thread_work() (this=0x5555588d13e0) at ../libs/ardour/butler.cc:188
#4  0x00007ffff6c251e7 in ARDOUR::Butler::_thread_work(void*) (arg=0x5555588d13e0) at ../libs/ardour/butler.cc:170
#5  0x00007ffff5538f8b in fake_thread_start(void*) (arg=0x55555ccfd9b0) at ../libs/pbd/pthread_utils.cc:101
#6  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#7  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 104 (Thread 0x7fff5bef6d40 (LWP 17222) "RT-14-0x7fff5be"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb44) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79ba6 in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6d7a1fb in ARDOUR::Graph::helper_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fff5bef5f18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fff5bef5f28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#6  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fff5bef5f18) at /usr/include/boost/bind/bind.hpp:1274
#7  0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#8  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fff5bef5f10) at /usr/include/boost/function/function_template.hpp:771
#9  0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x55555978f660) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#10 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 103 (Thread 0x7fff5bf7ad40 (LWP 17221) "RT-13-0x7fff5bf"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb44) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79ba6 in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6d7a1fb in ARDOUR::Graph::helper_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fff5bf79f18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fff5bf79f28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#6  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fff5bf79f18) at /usr/include/boost/bind/bind.hpp:1274
#7  0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#8  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fff5bf79f10) at /usr/include/boost/function/function_template.hpp:771
#9  0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x55555967def0) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#10 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 102 (Thread 0x7fff5bffed40 (LWP 17220) "RT-12-0x7fff5bf"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb44) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79ba6 in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6d7a1fb in ARDOUR::Graph::helper_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fff5bffdf18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fff5bffdf28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#6  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fff5bffdf18) at /usr/include/boost/bind/bind.hpp:1274
#7  0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#8  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fff5bffdf10) at /usr/include/boost/function/function_template.hpp:771
#9  0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x555559bc14e0) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#10 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 101 (Thread 0x7fffa4103d40 (LWP 17219) "RT-11-0x7fffa41"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb44) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79ba6 in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6d7a1fb in ARDOUR::Graph::helper_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fffa4102f18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fffa4102f28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#6  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fffa4102f18) at /usr/include/boost/bind/bind.hpp:1274
#7  0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#8  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fffa4102f10) at /usr/include/boost/function/function_template.hpp:771
#9  0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x55555969d870) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#10 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 100 (Thread 0x7fffa4187d40 (LWP 17218) "RT-10-0x7fffa41"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb44) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79ba6 in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6d7a1fb in ARDOUR::Graph::helper_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fffa4186f18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fffa4186f28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#6  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fffa4186f18) at /usr/include/boost/bind/bind.hpp:1274
#7  0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#8  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fffa4186f10) at /usr/include/boost/function/function_template.hpp:771
#9  0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x5555597e41c0) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#10 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 99 (Thread 0x7fffa420bd40 (LWP 17217) "RT-9-0x7fffa420"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb44) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79ba6 in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6d7a1fb in ARDOUR::Graph::helper_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fffa420af18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fffa420af28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#6  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fffa420af18) at /usr/include/boost/bind/bind.hpp:1274
#7  0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#8  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fffa420af10) at /usr/include/boost/function/function_template.hpp:771
#9  0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x555559bfcab0) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#10 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 98 (Thread 0x7fffa428fd40 (LWP 17216) "RT-8-0x7fffa428"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb50) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79390 in ARDOUR::Graph::reached_terminal_node() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:267
#3  0x00007ffff6d874b8 in ARDOUR::GraphNode::finish(ARDOUR::GraphChain const*) (this=0x555559aa6958, chain=0x7fff9c025c90) at ../libs/ardour/graphnode.cc:101
#4  0x00007ffff6d8738e in ARDOUR::GraphNode::run(ARDOUR::GraphChain const*) (this=0x555559aa6958, chain=0x7fff9c025c90) at ../libs/ardour/graphnode.cc:68
#5  0x00007ffff6d79d8c in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:344
#6  0x00007ffff6d7a1fb in ARDOUR::Graph::helper_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:372
#7  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fffa428ef18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#8  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fffa428ef28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#9  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fffa428ef18) at /usr/include/boost/bind/bind.hpp:1274
#10 0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#11 0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fffa428ef10) at /usr/include/boost/function/function_template.hpp:771
#12 0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x555558877820) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#13 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#14 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 97 (Thread 0x7fffa4313d40 (LWP 17215) "RT-7-0x7fffa431"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb44) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79ba6 in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6d7a1fb in ARDOUR::Graph::helper_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fffa4312f18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fffa4312f28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#6  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fffa4312f18) at /usr/include/boost/bind/bind.hpp:1274
#7  0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#8  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fffa4312f10) at /usr/include/boost/function/function_template.hpp:771
#9  0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x55555a7c7ef0) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#10 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 96 (Thread 0x7fffa4397d40 (LWP 17214) "RT-6-0x7fffa439"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb44) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79ba6 in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6d7a1fb in ARDOUR::Graph::helper_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fffa4396f18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fffa4396f28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#6  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fffa4396f18) at /usr/include/boost/bind/bind.hpp:1274
#7  0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#8  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fffa4396f10) at /usr/include/boost/function/function_template.hpp:771
#9  0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x55555958db70) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#10 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 95 (Thread 0x7fffa441bd40 (LWP 17213) "RT-4-0x7fffa441"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb44) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79ba6 in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6d7a1fb in ARDOUR::Graph::helper_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fffa441af18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fffa441af28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#6  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fffa441af18) at /usr/include/boost/bind/bind.hpp:1274
#7  0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#8  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fffa441af10) at /usr/include/boost/function/function_template.hpp:771
#9  0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x555559681c60) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#10 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 94 (Thread 0x7fffa449fd40 (LWP 17212) "RT-5-0x7fffa449"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb44) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79ba6 in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6d7a1fb in ARDOUR::Graph::helper_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fffa449ef18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fffa449ef28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#6  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fffa449ef18) at /usr/include/boost/bind/bind.hpp:1274
#7  0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#8  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fffa449ef10) at /usr/include/boost/function/function_template.hpp:771
#9  0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x55555992a8e0) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#10 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 93 (Thread 0x7fffa4523d40 (LWP 17211) "RT-3-0x7fffa452"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb44) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79ba6 in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6d7a1fb in ARDOUR::Graph::helper_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fffa4522f18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fffa4522f28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#6  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fffa4522f18) at /usr/include/boost/bind/bind.hpp:1274
#7  0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#8  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fffa4522f10) at /usr/include/boost/function/function_template.hpp:771
#9  0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x55555a478680) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#10 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 92 (Thread 0x7fffa45a7d40 (LWP 17210) "RT-2-0x7fffa45a"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb44) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79ba6 in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6d7a1fb in ARDOUR::Graph::helper_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fffa45a6f18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fffa45a6f28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#6  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fffa45a6f18) at /usr/include/boost/bind/bind.hpp:1274
#7  0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#8  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fffa45a6f10) at /usr/include/boost/function/function_template.hpp:771
#9  0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x555559712470) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#10 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 91 (Thread 0x7fffa462bd40 (LWP 17209) "RT-1-0x7fffa462"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb44) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79ba6 in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6d7a1fb in ARDOUR::Graph::helper_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fffa462af18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fffa462af28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#6  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fffa462af18) at /usr/include/boost/bind/bind.hpp:1274
#7  0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#8  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fffa462af10) at /usr/include/boost/function/function_template.hpp:771
#9  0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x55555a478560) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#10 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 90 (Thread 0x7fffa46afd40 (LWP 17208) "RT-main-0x7fffa"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff55403dc in PBD::Semaphore::wait() (this=0x555558e4eb44) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6d79ba6 in ARDOUR::Graph::run_one() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6d7a80d in ARDOUR::Graph::main_thread() (this=0x555558e4ea10) at ../libs/ardour/graph.cc:425
#4  0x00007ffff6d866fb in boost::_mfi::mf0<void, ARDOUR::Graph>::operator()(ARDOUR::Graph*) const (this=0x7fffa46aef18, p=0x555558e4ea10) at /usr/include/boost/bind/mem_fn_template.hpp:49
#5  0x00007ffff6d85ecb in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::Graph>&, boost::_bi::list0&, int) (this=0x7fffa46aef28, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#6  0x00007ffff6d84cfc in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator()() (this=0x7fffa46aef18) at /usr/include/boost/bind/bind.hpp:1274
#7  0x00007ffff6d834c1 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(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#8  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fffa46aef10) at /usr/include/boost/function/function_template.hpp:771
#9  0x00007fffbfa29ba1 in ARDOUR::AlsaAudioBackend::alsa_process_thread(void*) (arg=0x555559fe5e20) at ../libs/backends/alsa/alsa_audiobackend.cc:1215
#10 0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#11 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 61 (Thread 0x7fffbcb0c6c0 (LWP 17179) "ALSA-MIDI-LIST"):
#0  0x00007ffff290359f in __GI___poll (fds=0x7fff90000b90, nfds=1, timeout=200) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fffbfa2af1a in ARDOUR::AlsaAudioBackend::midi_device_thread() (this=0x55555799d310) at ../libs/backends/alsa/alsa_audiobackend.cc:1413
#2  0x00007fffbfa2adad in ARDOUR::AlsaAudioBackend::_midi_device_thread(void*) (arg=0x55555799d310) at ../libs/backends/alsa/alsa_audiobackend.cc:1376
#3  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#4  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 60 (Thread 0x7fffbc28cd40 (LWP 17178) "AudioEngine 1"):
#0  0x00007ffff2903af6 in __GI_ppoll (fds=0x555557b300ec, nfds=2, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#1  0x00007fffbfa5f6f8 in Alsa_pcmi::pcm_wait() (this=0x555557b30060) at ../libs/backends/alsa/zita-alsa-pcmi.cc:178
#2  0x00007fffbfa2dc5e in ARDOUR::AlsaAudioBackend::main_process_thread() (this=0x55555799d310) at ../libs/backends/alsa/alsa_audiobackend.cc:1863
#3  0x00007fffbfa272c1 in pthread_process(void*) (arg=0x55555799d310) at ../libs/backends/alsa/alsa_audiobackend.cc:806
#4  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#5  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 59 (Thread 0x7fffbc298d40 (LWP 17177) "AlsaMidiIO"):
#0  0x00007ffff290359f in __GI___poll (fds=0x555557b15d80, nfds=1, timeout=100) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fffbfa591bd in ARDOUR::AlsaRawMidiIn::main_process_thread() (this=0x555557b33f00) at ../libs/backends/alsa/alsa_rawmidi.cc:255
#2  0x00007fffbfa56647 in pthread_process(void*) (arg=0x555557b34358) at ../libs/backends/alsa/alsa_midi.cc:68
#3  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#4  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 58 (Thread 0x7fffd9697d40 (LWP 17176) "AlsaMidiIO"):
#0  0x00007ffff28894ae in __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x555557b07918) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x555557b07918, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007ffff288952f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x555557b07918, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007ffff288bd40 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555557b078c8, cond=0x555557b078f0) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555557b078f0, mutex=0x555557b078c8) at pthread_cond_wait.c:618
#5  0x00007fffbfa58a04 in ARDOUR::AlsaRawMidiOut::main_process_thread() (this=0x555557b078a0) at ../libs/backends/alsa/alsa_rawmidi.cc:150
#6  0x00007fffbfa56647 in pthread_process(void*) (arg=0x555557b078b8) at ../libs/backends/alsa/alsa_midi.cc:68
#7  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#8  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 57 (Thread 0x7fffa7fff6c0 (LWP 17175) "ExecStdOut"):
#0  0x00007ffff290359f in __GI___poll (fds=0x7fffa7ffc838, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff5551b2c in PBD::SystemExec::output_interposer() (this=0x555557a73870) at ../libs/pbd/system_exec.cc:890
#2  0x00007ffff5550b8e in interposer_thread(void*) (arg=0x555557a73870) at ../libs/pbd/system_exec.cc:282
#3  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#4  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 51 (Thread 0x7fffa67fc6c0 (LWP 17166) "threaded-ml"):
#0  0x00007ffff290359f in __GI___poll (fds=fds@entry=0x7fff98002800, nfds=nfds@entry=2, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fffbf92e8c7 in poll (__timeout=-1, __nfds=2, __fds=0x7fff98002800) at /usr/include/bits/poll2.h:39
#2  poll_func (ufds=0x7fff98002800, nfds=2, timeout=-1, userdata=0x555557b2e070) at ../pulseaudio/src/pulse/thread-mainloop.c:70
#3  0x00007fffbf91846c in pa_mainloop_poll (m=m@entry=0x55555810e660) at ../pulseaudio/src/pulse/mainloop.c:863
#4  0x00007fffbf92242c in pa_mainloop_iterate (m=m@entry=0x55555810e660, block=block@entry=1, retval=retval@entry=0x0) at ../pulseaudio/src/pulse/mainloop.c:945
#5  0x00007fffbf9224e1 in pa_mainloop_run (m=0x55555810e660, retval=0x0) at ../pulseaudio/src/pulse/mainloop.c:963
#6  0x00007fffbf932c02 in thread (userdata=0x55555810e610) at ../pulseaudio/src/pulse/thread-mainloop.c:101
#7  0x00007fffbf8cfc67 in internal_thread_func (userdata=0x55555810e940) at ../pulseaudio/src/pulsecore/thread-posix.c:81
#8  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#9  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 43 (Thread 0x7fffbf0096c0 (LWP 17158) "gdbus"):
#0  0x00007ffff290359f in __GI___poll (fds=0x7fffa80038b0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff4d77206 in g_main_context_poll_unlocked (priority=2147483647, n_fds=2, fds=0x7fffa80038b0, timeout=<optimized out>, context=0x555557a937d0) at ../glib/glib/gmain.c:4653
#2  g_main_context_iterate_unlocked.isra.0 (context=0x555557a937d0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4344
#3  0x00007ffff4d19b47 in g_main_loop_run (loop=0x555557a95450) at ../glib/glib/gmain.c:4551
#4  0x00007ffff45020bc in gdbus_shared_thread_func (user_data=0x555557a937a0) at ../glib/gio/gdbusprivate.c:284
#5  0x00007ffff4d4a9a5 in g_thread_proxy (data=0x555557a954c0) at ../glib/glib/gthread.c:831
#6  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#7  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 42 (Thread 0x7fffbdeaa6c0 (LWP 17157) "gmain"):
#0  0x00007ffff290359f in __GI___poll (fds=0x7fffb81a8180, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff4d77206 in g_main_context_poll_unlocked (priority=2147483647, n_fds=2, fds=0x7fffb81a8180, timeout=<optimized out>, context=0x555557a8ad10) at ../glib/glib/gmain.c:4653
#2  g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x555557a8ad10, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4344
#3  0x00007ffff4d17112 in g_main_context_iteration (context=0x555557a8ad10, may_block=may_block@entry=1) at ../glib/glib/gmain.c:4414
#4  0x00007ffff4d17162 in glib_worker_main (data=<optimized out>) at ../glib/glib/gmain.c:6574
#5  0x00007ffff4d4a9a5 in g_thread_proxy (data=0x555557a50b50) at ../glib/glib/gthread.c:831
#6  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#7  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 41 (Thread 0x7fffbe8086c0 (LWP 17156) "pool-spawner"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4d72247 in g_cond_wait (cond=0x555557a8aba8, mutex=0x555557a8aba0) at ../glib/glib/gthread-posix.c:1552
#2  0x00007ffff4ce41b4 in g_async_queue_pop_intern_unlocked (queue=0x555557a8aba0, wait=1, end_time=-1) at ../glib/glib/gasyncqueue.c:425
#3  0x00007ffff4d4ca2e in g_thread_pool_spawn_thread (data=<optimized out>) at ../glib/glib/gthreadpool.c:311
#4  0x00007ffff4d4a9a5 in g_thread_proxy (data=0x555557a50910) at ../glib/glib/gthread.c:831
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 10 (Thread 0x7fffd883d6c0 (LWP 17123) "DeviceList"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4d72247 in g_cond_wait (cond=0x555557c93990, mutex=0x555557c939a0) at ../glib/glib/gthread-posix.c:1552
#2  0x00007ffff6b99e45 in ARDOUR::AudioEngine::do_devicelist_update() (this=0x555557c92f50) at ../libs/ardour/audioengine.cc:760
#3  0x00007ffff6baa1f9 in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator()(ARDOUR::AudioEngine*) const (this=0x555557ca2350, p=0x555557c92f50) at /usr/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff6ba98cf in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::AudioEngine>&, boost::_bi::list0&, int) (this=0x555557ca2360, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#5  0x00007ffff6ba8ed4 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator()() (this=0x555557ca2350) at /usr/include/boost/bind/bind.hpp:1274
#6  0x00007ffff6ba8384 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#7  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x555557ca2348) at /usr/include/boost/function/function_template.hpp:771
#8  0x00007ffff5539cb9 in PBD::Thread::_run(void*) (arg=0x555557ca2320) at ../libs/pbd/pthread_utils.cc:488
#9  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#10 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 9 (Thread 0x7fffd920d6c0 (LWP 17122) "EngineWatchdog"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4d72247 in g_cond_wait (cond=0x555557c93960, mutex=0x555557c93970) at ../glib/glib/gthread-posix.c:1552
#2  0x00007ffff6b99a8f in ARDOUR::AudioEngine::do_reset_backend() (this=0x555557c92f50) at ../libs/ardour/audioengine.cc:724
#3  0x00007ffff6baa1f9 in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator()(ARDOUR::AudioEngine*) const (this=0x555557c58910, p=0x555557c92f50) at /usr/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff6ba98cf in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::AudioEngine>&, boost::_bi::list0&, int) (this=0x555557c58920, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#5  0x00007ffff6ba8ed4 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator()() (this=0x555557c58910) at /usr/include/boost/bind/bind.hpp:1274
#6  0x00007ffff6ba8384 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#7  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x555557c58908) at /usr/include/boost/function/function_template.hpp:771
#8  0x00007ffff5539cb9 in PBD::Thread::_run(void*) (arg=0x555557c588e0) at ../libs/pbd/pthread_utils.cc:488
#9  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#10 0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 6 (Thread 0x7fffdaffd6c0 (LWP 17119) "Analyzer"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4d72247 in g_cond_wait (cond=0x7ffff7cf1f20 <ARDOUR::Analyser::SourcesToAnalyse>, mutex=0x7ffff7cf1f18 <ARDOUR::Analyser::analysis_queue_lock>) at ../glib/glib/gthread-posix.c:1552
#2  0x00007ffff6b41d5b in ARDOUR::Analyser::work() () at ../libs/ardour/analyser.cc:95
#3  0x00005555566e56a7 in sigc::pointer_functor0<void>::operator()() const (this=0x555557554900) at /usr/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x00007ffff6b45204 in boost::detail::function::void_function_obj_invoker0<sigc::pointer_functor0<void>, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#5  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x5555575548f8) at /usr/include/boost/function/function_template.hpp:771
#6  0x00007ffff5539cb9 in PBD::Thread::_run(void*) (arg=0x5555575548d0) at ../libs/pbd/pthread_utils.cc:488
#7  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#8  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 5 (Thread 0x7fffdb7fe6c0 (LWP 17118) "PeakFileBuilder"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4d72247 in g_cond_wait (cond=0x7ffff7cf4b30 <ARDOUR::SourceFactory::PeaksToBuild>, mutex=0x7ffff7cf4b40 <ARDOUR::SourceFactory::peak_building_lock>) at ../glib/glib/gthread-posix.c:1552
#2  0x00007ffff726a00c in peak_thread_work() () at ../libs/ardour/source_factory.cc:75
#3  0x00007ffff7f32622 in boost::detail::function::void_function_invoker0<void (*)(), void>::invoke(boost::detail::function::function_buffer&) (function_ptr=...) at /usr/include/boost/function/function_template.hpp:117
#4  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x555557554d98) at /usr/include/boost/function/function_template.hpp:771
#5  0x00007ffff5539cb9 in PBD::Thread::_run(void*) (arg=0x555557554d70) at ../libs/pbd/pthread_utils.cc:488
#6  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#7  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 4 (Thread 0x7fffdbfff6c0 (LWP 17117) "PeakFileBuilder"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4d72247 in g_cond_wait (cond=0x7ffff7cf4b30 <ARDOUR::SourceFactory::PeaksToBuild>, mutex=0x7ffff7cf4b40 <ARDOUR::SourceFactory::peak_building_lock>) at ../glib/glib/gthread-posix.c:1552
#2  0x00007ffff726a00c in peak_thread_work() () at ../libs/ardour/source_factory.cc:75
#3  0x00007ffff7f32622 in boost::detail::function::void_function_invoker0<void (*)(), void>::invoke(boost::detail::function::function_buffer&) (function_ptr=...) at /usr/include/boost/function/function_template.hpp:117
#4  0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x555557555238) at /usr/include/boost/function/function_template.hpp:771
#5  0x00007ffff5539cb9 in PBD::Thread::_run(void*) (arg=0x555557555210) at ../libs/pbd/pthread_utils.cc:488
#6  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#7  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 3 (Thread 0x7fffe0fff6c0 (LWP 17116) "LXVSTEventLoop"):
#0  0x00007ffff28d5835 in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=req@entry=0x7fffe0ffe770, rem=rem@entry=0x7fffe0ffe780) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
#1  0x00007ffff28e7ef7 in __GI___nanosleep (req=req@entry=0x7fffe0ffe770, rem=rem@entry=0x7fffe0ffe780) at ../sysdeps/unix/sysv/linux/nanosleep.c:25
#2  0x00007ffff4d47319 in g_usleep (microseconds=<optimized out>) at ../glib/glib/gtimer.c:282
#3  g_usleep (microseconds=<optimized out>) at ../glib/glib/gtimer.c:270
#4  0x0000555556c2ab19 in gui_event_loop(void*) (ptr=0x0) at ../gtk2_ardour/linux_vst_gui_support.cc:468
#5  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#6  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 2 (Thread 0x7fffe14b46c0 (LWP 17115) "Trigger Worker"):
#0  0x00007ffff290359f in __GI___poll (fds=0x7fffe14b3750, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff550ff5b in CrossThreadChannel::poll_for_request() (this=0x55555751eb40) at ../libs/pbd/crossthread.posix.cc:108
#2  0x00007ffff550ffdd in CrossThreadChannel::receive(char&, bool) (this=0x55555751eb40, msg=@0x7fffe14b37b7: 0 '\000', wait=true) at ../libs/pbd/crossthread.posix.cc:133
#3  0x00007ffff72d2c21 in ARDOUR::TriggerBoxThread::thread_work() (this=0x55555751eb10) at ../libs/ardour/triggerbox.cc:4880
#4  0x00007ffff72d2b7d in ARDOUR::TriggerBoxThread::_thread_work(void*) (arg=0x55555751eb10) at ../libs/ardour/triggerbox.cc:4868
#5  0x00007ffff5538f8b in fake_thread_start(void*) (arg=0x55555746a910) at ../libs/pbd/pthread_utils.cc:101
#6  0x00007ffff288c9eb in start_thread (arg=<optimized out>) at pthread_create.c:444
#7  0x00007ffff2910dfc in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 1 (Thread 0x7fffebf2bd40 (LWP 17112) "ArdourGUI"):
#0  0x000055555622e6dd in boost::unordered::detail::iterator_detail::iterator<boost::unordered::detail::node<std::pair<std::shared_ptr<Evoral::Note<Temporal::Beats> > const, MidiGhostRegion::GhostEvent*>, void*>, boost::unordered::detail::bucket<boost::unordered::detail::node<std::pair<std::shared_ptr<Evoral::Note<Temporal::Beats> > const, MidiGhostRegion::GhostEvent*>, void*>, void*> >::increment() (this=0x55556143ce38) at /usr/include/boost/unordered/detail/implementation.hpp:1703
#1  0x000055555622e254 in boost::unordered::detail::iterator_detail::iterator<boost::unordered::detail::node<std::pair<std::shared_ptr<Evoral::Note<Temporal::Beats> > const, MidiGhostRegion::GhostEvent*>, void*>, boost::unordered::detail::bucket<boost::unordered::detail::node<std::pair<std::shared_ptr<Evoral::Note<Temporal::Beats> > const, MidiGhostRegion::GhostEvent*>, void*>, void*> >::operator++() (this=0x55556143ce38) at /usr/include/boost/unordered/detail/implementation.hpp:1638
#2  0x000055555622df3b in MidiGhostRegion::find_event(std::shared_ptr<Evoral::Note<Temporal::Beats> >) (this=0x55556143cda0, parent=std::shared_ptr<Evoral::Note<Temporal::Beats>> (use count 15, weak count 0) = {...}) at ../gtk2_ardour/ghostregion.cc:478
#3  0x0000555556c0c0e1 in VelocityGhostRegion::note_selected(NoteBase*) (this=0x55556143cda0, ev=0x5555614bd310) at ../gtk2_ardour/velocity_ghost_region.cc:283
#4  0x00005555563d50a7 in MidiRegionView::sync_ghost_selection(NoteBase*) (this=0x555561441fd0, ev=0x5555614bd310) at ../gtk2_ardour/midi_region_view.cc:2647
#5  0x00005555563d4fa0 in MidiRegionView::add_to_selection(NoteBase*) (this=0x555561441fd0, ev=0x5555614bd310) at ../gtk2_ardour/midi_region_view.cc:2635
#6  0x00005555563d3eb3 in MidiRegionView::note_selected(NoteBase*, bool, bool) (this=0x555561441fd0, ev=0x5555614bd310, add=true, extend=false) at ../gtk2_ardour/midi_region_view.cc:2460
#7  0x00005555563d0694 in MidiRegionView::add_note(std::shared_ptr<Evoral::Note<Temporal::Beats> >, bool) (this=0x555561441fd0, note=std::shared_ptr<Evoral::Note<Temporal::Beats>> (use count 15, weak count 0) = {...}, visible=true) at ../gtk2_ardour/midi_region_view.cc:1933
#8  0x00005555563cc008 in MidiRegionView::model_changed() (this=0x555561441fd0) at ../gtk2_ardour/midi_region_view.cc:1255
#9  0x00005555563cb613 in MidiRegionView::_redisplay(bool) (this=0x555561441fd0, view_only=false) at ../gtk2_ardour/midi_region_view.cc:1136
#10 0x0000555556868cb8 in RegionView::redisplay(bool) (this=0x555561441fd0, view_only=false) at ../gtk2_ardour/region_view.h:105
#11 0x0000555556867a76 in RegionView::enable_display(bool) (this=0x555561441fd0, view_only=false) at ../gtk2_ardour/region_view.cc:1235
#12 0x0000555555df7c3a in RegionView::DisplaySuspender::~DisplaySuspender() (this=0x7fffffffb240, __in_chrg=<optimized out>) at ../gtk2_ardour/region_view.h:122
#13 0x000055555686353d in RegionView::region_changed(PBD::PropertyChange const&) (this=0x555561441fd0, what_changed=...) at ../gtk2_ardour/region_view.cc:458
#14 0x000055555686d55e in boost::_mfi::mf1<void, RegionView, PBD::PropertyChange const&>::operator()(RegionView*, PBD::PropertyChange const&) const (this=0x5555614adcf8, p=0x555561441fd0, a1=...) at /usr/include/boost/bind/mem_fn_template.hpp:165
#15 0x000055555686d153 in boost::_bi::list2<boost::_bi::value<RegionView*>, boost::arg<1> >::operator()<boost::_mfi::mf1<void, RegionView, PBD::PropertyChange const&>, boost::_bi::rrlist1<PBD::PropertyChange const&> >(boost::_bi::type<void>, boost::_mfi::mf1<void, RegionView, PBD::PropertyChange const&>&, boost::_bi::rrlist1<PBD::PropertyChange const&>&, int) (this=0x5555614add08, f=..., a=...) at /usr/include/boost/bind/bind.hpp:299
#16 0x000055555686ccf5 in boost::_bi::bind_t<void, boost::_mfi::mf1<void, RegionView, PBD::PropertyChange const&>, boost::_bi::list2<boost::_bi::value<RegionView*>, boost::arg<1> > >::operator()<PBD::PropertyChange const&>(PBD::PropertyChange const&) (this=0x5555614adcf8, a1=...) at /usr/include/boost/bind/bind.hpp:1286
#17 0x000055555686c4c9 in boost::detail::function::void_function_obj_invoker1<boost::_bi::bind_t<void, boost::_mfi::mf1<void, RegionView, PBD::PropertyChange const&>, boost::_bi::list2<boost::_bi::value<RegionView*>, boost::arg<1> > >, void, PBD::PropertyChange const&>::invoke(boost::detail::function::function_buffer&, PBD::PropertyChange const&) (function_obj_ptr=..., a0=...) at /usr/include/boost/function/function_template.hpp:158
#18 0x0000555555d8520e in boost::function1<void, PBD::PropertyChange const&>::operator()(PBD::PropertyChange const&) const (this=0x5555614adcf0, a0=...) at /usr/include/boost/function/function_template.hpp:771
#19 0x0000555555d8bea8 in boost::_bi::list1<boost::_bi::value<PBD::PropertyChange> >::operator()<boost::function<void (PBD::PropertyChange const&)>, boost::_bi::list0>(boost::_bi::type<void>, boost::function<void (PBD::PropertyChange const&)>&, boost::_bi::list0&, int) (this=0x5555614add10, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#20 0x0000555555d8b6c2 in boost::_bi::bind_t<boost::_bi::unspecified, boost::function<void (PBD::PropertyChange const&)>, boost::_bi::list1<boost::_bi::value<PBD::PropertyChange> > >::operator()() (this=0x5555614adcf0) at /usr/include/boost/bind/bind.hpp:1274
#21 0x0000555555d8ad53 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<boost::_bi::unspecified, boost::function<void (PBD::PropertyChange const&)>, boost::_bi::list1<boost::_bi::value<PBD::PropertyChange> > >, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#22 0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x7fffffffb5f0) at /usr/include/boost/function/function_template.hpp:771
#23 0x00007ffff518f577 in AbstractUI<Gtkmm2ext::UIRequest>::call_slot(PBD::EventLoop::InvalidationRecord*, boost::function<void ()> const&) (this=0x555557cd9400, invalidation=0x55556143ad60, f=...) at ../libs/pbd/pbd/abstract_ui.cc:463
#24 0x0000555555d86571 in PBD::Signal1<void, PBD::PropertyChange const&, PBD::OptionalLastValue<void> >::compositor(boost::function<void (PBD::PropertyChange const&)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, PBD::PropertyChange const&) (f=..., event_loop=0x555557cd9400, ir=0x55556143ad60, a1=...) at libs/pbd/pbd/signals_generated.h:629
#25 0x0000555555d8b9ee in boost::_bi::list4<boost::_bi::value<boost::function<void (PBD::PropertyChange const&)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1> >::operator()<void (*)(boost::function<void (PBD::PropertyChange const&)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, PBD::PropertyChange const&), boost::_bi::rrlist1<PBD::PropertyChange const&> >(boost::_bi::type<void>, void (*&)(boost::function<void (PBD::PropertyChange const&)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, PBD::PropertyChange const&), boost::_bi::rrlist1<PBD::PropertyChange const&>&, int) (this=0x555557c9f1a8, f=@0x555557c9f1a0: 0x555555d8649f <PBD::Signal1<void, PBD::PropertyChange const&, PBD::OptionalLastValue<void> >::compositor(boost::function<void (PBD::PropertyChange const&)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, PBD::PropertyChange const&)>, a=...) at /usr/include/boost/bind/bind.hpp:443
#26 0x0000555555d8af31 in boost::_bi::bind_t<void, void (*)(boost::function<void (PBD::PropertyChange const&)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, PBD::PropertyChange const&), boost::_bi::list4<boost::_bi::value<boost::function<void (PBD::PropertyChange const&)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1> > >::operator()<PBD::PropertyChange const&>(PBD::PropertyChange const&) (this=0x555557c9f1a0, a1=...) at /usr/include/boost/bind/bind.hpp:1286
#27 0x0000555555d8a393 in boost::detail::function::void_function_obj_invoker1<boost::_bi::bind_t<void, void (*)(boost::function<void (PBD::PropertyChange const&)>, PBD::EventLoop*, PBD::EventLoop::InvalidationRecord*, PBD::PropertyChange const&), boost::_bi::list4<boost::_bi::value<boost::function<void (PBD::PropertyChange const&)> >, boost::_bi::value<PBD::EventLoop*>, boost::_bi::value<PBD::EventLoop::InvalidationRecord*>, boost::arg<1> > >, void, PBD::PropertyChange const&>::invoke(boost::detail::function::function_buffer&, PBD::PropertyChange const&) (function_obj_ptr=..., a0=...) at /usr/include/boost/function/function_template.hpp:158
#28 0x0000555555d8520e in boost::function1<void, PBD::PropertyChange const&>::operator()(PBD::PropertyChange const&) const (this=0x555557a548f0, a0=...) at /usr/include/boost/function/function_template.hpp:771
#29 0x0000555555f45352 in PBD::Signal1<void, PBD::PropertyChange const&, PBD::OptionalLastValue<void> >::operator()(PBD::PropertyChange const&) (this=0x555561441958, a1=...) at libs/pbd/pbd/signals_generated.h:738
#30 0x00007ffff55458b2 in PBD::Stateful::send_change(PBD::PropertyChange const&) (this=0x555561441950, what_changed=...) at ../libs/pbd/stateful.cc:296
#31 0x00007ffff70734fd in ARDOUR::Region::send_change(PBD::PropertyChange const&) (this=0x555561441920, what_changed=...) at ../libs/ardour/region.cc:1561
#32 0x00007ffff6eb0a94 in ARDOUR::MidiRegion::model_contents_changed() (this=0x555561441920) at ../libs/ardour/midi_region.cc:475
#33 0x00007ffff6eb59b5 in boost::_mfi::mf0<void, ARDOUR::MidiRegion>::operator()(ARDOUR::MidiRegion*) const (this=0x55556149a888, p=0x555561441920) at /usr/include/boost/bind/mem_fn_template.hpp:49
#34 0x00007ffff6eb522f in boost::_bi::list1<boost::_bi::value<ARDOUR::MidiRegion*> >::operator()<boost::_mfi::mf0<void, ARDOUR::MidiRegion>, boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf0<void, ARDOUR::MidiRegion>&, boost::_bi::list0&, int) (this=0x55556149a898, f=..., a=...) at /usr/include/boost/bind/bind.hpp:239
#35 0x00007ffff6eb4820 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::MidiRegion>, boost::_bi::list1<boost::_bi::value<ARDOUR::MidiRegion*> > >::operator()() (this=0x55556149a888) at /usr/include/boost/bind/bind.hpp:1274
#36 0x00007ffff6eb408d in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::MidiRegion>, boost::_bi::list1<boost::_bi::value<ARDOUR::MidiRegion*> > >, void>::invoke(boost::detail::function::function_buffer&) (function_obj_ptr=...) at /usr/include/boost/function/function_template.hpp:158
#37 0x0000555555c903a1 in boost::function0<void>::operator()() const (this=0x55556149a880) at /usr/include/boost/function/function_template.hpp:771
#38 0x0000555555c8fec3 in PBD::Signal0<void, PBD::OptionalLastValue<void> >::operator()() (this=0x55556144a460) at libs/pbd/pbd/signals_generated.h:340
#39 0x00007ffff6e743e3 in ARDOUR::MidiModel::NoteDiffCommand::operator()() (this=0x5555614c1ca0) at ../libs/ardour/midi_model.cc:333
#40 0x00007ffff6e72a21 in ARDOUR::MidiModel::apply_diff_command_as_subcommand(ARDOUR::Session&, PBD::Command*) (this=0x555561449a40, session=..., cmd=0x5555614c1ca0) at ../libs/ardour/midi_model.cc:106
#41 0x00005555563cad48 in MidiRegionView::apply_note_diff(bool, bool) (this=0x555561441fd0, as_subcommand=false, was_copy=false) at ../gtk2_ardour/midi_region_view.cc:1019
#42 0x00005555563ca199 in MidiRegionView::create_note_at(Temporal::timepos_t const&, double, Temporal::Beats, unsigned int, bool) (this=0x555561441fd0, t=..., y=1, length=..., state=256, shift_snap=false) at ../gtk2_ardour/midi_region_view.cc:904
#43 0x0000555555f91577 in NoteCreateDrag::finished(_GdkEvent*, bool) (this=0x5555614b94c0, ev=0x7fffffffc5e0, had_movement=true) at ../gtk2_ardour/editor_drag.cc:6899
#44 0x0000555555f6658a in Drag::end_grab(_GdkEvent*) (this=0x5555614b94c0, event=0x7fffffffc5e0) at ../gtk2_ardour/editor_drag.cc:408
#45 0x0000555555f659df in DragManager::end_grab(_GdkEvent*) (this=0x5555587a5320, e=0x7fffffffc5e0) at ../gtk2_ardour/editor_drag.cc:205
#46 0x00005555563c88d3 in MidiRegionView::button_release(_GdkEventButton*) (this=0x555561441fd0, ev=0x7fffffffc5e0) at ../gtk2_ardour/midi_region_view.cc:573
#47 0x00005555563c7f98 in MidiRegionView::canvas_group_event(_GdkEvent*) (this=0x555561441fd0, ev=0x7fffffffc5e0) at ../gtk2_ardour/midi_region_view.cc:369
#48 0x0000555556a8d6a2 in sigc::bound_mem_functor1<bool, TimeAxisViewItem, _GdkEvent*>::operator()(_GdkEvent* const&) const (this=0x55556141c9b8, _A_a1=@0x7fffffffc450: 0x7fffffffc5e0) at /usr/include/sigc++-2.0/sigc++/functors/mem_fun.h:2066
#49 0x0000555556a8d0c5 in sigc::adaptor_functor<sigc::bound_mem_functor1<bool, TimeAxisViewItem, _GdkEvent*> >::operator()<_GdkEvent* const&>(_GdkEvent* const&) const (this=0x55556141c9b0, _A_arg1=@0x7fffffffc450: 0x7fffffffc5e0) at /usr/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:89
#50 0x0000555556a8c69d in sigc::internal::slot_call<sigc::bound_mem_functor1<bool, TimeAxisViewItem, _GdkEvent*>, bool, _GdkEvent*>::call_it(sigc::internal::slot_rep*, _GdkEvent* const&) (rep=0x55556141c980, a_#0=@0x7fffffffc450: 0x7fffffffc5e0) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:451
#51 0x0000555556b4bbb1 in sigc::internal::signal_emit1<bool, _GdkEvent*, ArdourCanvas::Item::EventAccumulator<bool> >::operator()(sigc::slot<bool (_GdkEvent*), sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil> const&) const (this=0x7fffffffc378, _A_slot=...) at /usr/include/sigc++-2.0/sigc++/signal.h:856
#52 0x0000555556b4b073 in sigc::internal::slot_iterator_buf<sigc::internal::signal_emit1<bool, _GdkEvent*, ArdourCanvas::Item::EventAccumulator<bool> >, bool>::operator*() const (this=0x7fffffffc320) at /usr/include/sigc++-2.0/sigc++/signal.h:315
#53 0x0000555556b4a13b in ArdourCanvas::Item::EventAccumulator<bool>::operator()<sigc::internal::slot_iterator_buf<sigc::internal::signal_emit1<bool, _GdkEvent*, ArdourCanvas::Item::EventAccumulator<bool> >, bool> >(sigc::internal::slot_iterator_buf<sigc::internal::signal_emit1<bool, _GdkEvent*, ArdourCanvas::Item::EventAccumulator<bool> >, bool>, sigc::internal::slot_iterator_buf<sigc::internal::signal_emit1<bool, _GdkEvent*, ArdourCanvas::Item::EventAccumulator<bool> >, bool>) (this=0x7fffffffc36f, first=..., last=...) at ../libs/canvas/canvas/item.h:257
#54 0x0000555556b4912a in sigc::internal::signal_emit1<bool, _GdkEvent*, ArdourCanvas::Item::EventAccumulator<bool> >::emit(sigc::internal::signal_impl*, _GdkEvent* const&) (impl=0x55555c4ef3c0, _A_a1=@0x7fffffffc450: 0x7fffffffc5e0) at /usr/include/sigc++-2.0/sigc++/signal.h:875
#55 0x0000555556b48025 in sigc::signal1<bool, _GdkEvent*, ArdourCanvas::Item::EventAccumulator<bool> >::emit(_GdkEvent* const&) const (this=0x5555604a0af0, _A_a1=@0x7fffffffc450: 0x7fffffffc5e0) at /usr/include/sigc++-2.0/sigc++/signal.h:2951
#56 0x0000555556b472b1 in sigc::signal1<bool, _GdkEvent*, ArdourCanvas::Item::EventAccumulator<bool> >::operator()(_GdkEvent* const&) const (this=0x5555604a0af0, _A_a1=@0x7fffffffc450: 0x7fffffffc5e0) at /usr/include/sigc++-2.0/sigc++/signal.h:2967
#57 0x00007ffff5670f11 in ArdourCanvas::GtkCanvas::deliver_event(_GdkEvent*) (this=0x555557b50698, event=0x7fffffffc5e0) at ../libs/canvas/canvas.cc:862
#58 0x00007ffff5672908 in ArdourCanvas::GtkCanvas::on_button_release_event(_GdkEventButton*) (this=0x555557b50698, ev=0x5555614bba10) at ../libs/canvas/canvas.cc:1179
#59 0x00007ffff3effe18 in Gtk::Widget_Class::button_release_event_callback(_GtkWidget*, _GdkEventButton*) () at /usr/lib/libgtkmm-2.4.so.1
#60 0x00007ffff4938f08 in _gtk_marshal_BOOLEAN__BOXED (closure=0x555557d261f0, return_value=0x7fffffffc800, n_param_values=<optimized out>, param_values=0x7fffffffc890, invocation_hint=<optimized out>, marshal_data=<optimized out>) at /usr/src/debug/gtk2/gtk/gtk/gtkmarshalers.c:84
#61 0x00007ffff4e1f6c0 in g_closure_invoke (closure=0x555557d261f0, return_value=0x7fffffffc800, n_param_values=2, param_values=0x7fffffffc890, invocation_hint=0x7fffffffc7e0) at ../glib/gobject/gclosure.c:832
#62 0x00007ffff4e4e0ea in signal_emit_unlocked_R.isra.0 (node=node@entry=0x7fffffffc980, detail=detail@entry=0, instance=instance@entry=0x555559e68b50, emission_return=emission_return@entry=0x7fffffffca00, instance_and_params=instance_and_params@entry=0x7fffffffc890) at ../glib/gobject/gsignal.c:4020
#63 0x00007ffff4e3e335 in signal_emit_valist_unlocked (instance=instance@entry=0x555559e68b50, signal_id=signal_id@entry=34, detail=detail@entry=0, var_args=var_args@entry=0x7fffffffcae0) at ../glib/gobject/gsignal.c:3625
#64 0x00007ffff4e3ec77 in g_signal_emit_valist (instance=0x555559e68b50, signal_id=34, detail=0, var_args=var_args@entry=0x7fffffffcae0) at ../glib/gobject/gsignal.c:3355
#65 0x00007ffff4e3ed34 in g_signal_emit (instance=instance@entry=0x555559e68b50, signal_id=<optimized out>, detail=detail@entry=0) at ../glib/gobject/gsignal.c:3675
#66 0x00007ffff4a6d88d in gtk_widget_event_internal (widget=0x555559e68b50, event=0x5555614bba10) at /usr/src/debug/gtk2/gtk/gtk/gtkwidget.c:5010
#67 0x00007ffff493d676 in IA__gtk_propagate_event (widget=0x555559e68b50, event=0x5555614bba10) at /usr/src/debug/gtk2/gtk/gtk/gtkmain.c:2503
#68 0x00007ffff493ed73 in IA__gtk_main_do_event (event=0x5555614bba10) at /usr/src/debug/gtk2/gtk/gtk/gtkmain.c:1698
#69 IA__gtk_main_do_event (event=<optimized out>) at /usr/src/debug/gtk2/gtk/gtk/gtkmain.c:1503
#70 0x00007ffff47a4dbc in gdk_event_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at x11/gdkevents-x11.c:2425
#71 0x00007ffff4d18f19 in g_main_dispatch (context=0x555557cd3380) at ../glib/glib/gmain.c:3476
#72 0x00007ffff4d772b7 in g_main_context_dispatch_unlocked (context=0x555557cd3380) at ../glib/glib/gmain.c:4284
#73 g_main_context_iterate_unlocked.isra.0 (context=0x555557cd3380, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4349
#74 0x00007ffff4d19b47 in g_main_loop_run (loop=0x555557afc850) at ../glib/glib/gmain.c:4551
#75 0x00007ffff4938473 in IA__gtk_main () at /usr/src/debug/gtk2/gtk/gtk/gtkmain.c:1270
#76 0x00007ffff518a07e in Gtkmm2ext::UI::run(Receiver&) (this=0x555557cd9400, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:305
#77 0x000055555638cb14 in main(int, char**) (argc=1, argv=0x7fffffffd228) at ../gtk2_ardour/main.cc:471