Thread 96 "LV2Worker" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffbd7fa6c0 (LWP 27801)]
0x00007ffff3aa3d44 in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libfftw3f.so.3
(gdb) thread apply all bt

Thread 151 (Thread 0x7ffe46ffd6c0 (LWP 27858) "AutoConnect"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x55555a877080) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x55555a877080) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55555a877080, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55555a877030, cond=0x55555a877058) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x55555a877058, mutex=0x55555a877030) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffff718f4ed in ARDOUR::Session::auto_connect_thread_run (this=0x55555a874c20) at ../libs/ardour/session.cc:8004
#6  0x00007ffff718ef3c in ARDOUR::Session::auto_connect_thread (arg=0x55555a874c20) at ../libs/ardour/session.cc:7936
#7  0x00007ffff4bbec48 in fake_thread_start (arg=0x55555cabc7e0) at ../libs/pbd/pthread_utils.cc:191
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 150 (Thread 0x7ffe477fe6c0 (LWP 27857) "SessionSignals"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=149750788, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x55555a877010) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=149750788, abstime=0x0, clockid=0, expected=0, futex_word=0x55555a877010) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55555a877010, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55555a876fc0, cond=0x55555a876fe8) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x55555a876fe8, mutex=0x55555a876fc0) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffff721cc13 in ARDOUR::Session::emit_thread_run (this=0x55555a874c20) at ../libs/ardour/session_process.cc:1234
#6  0x00007ffff721cbb2 in ARDOUR::Session::emit_thread (arg=0x55555a874c20) at ../libs/ardour/session_process.cc:1224
#7  0x00007ffff4bbec48 in fake_thread_start (arg=0x555567357d20) at ../libs/pbd/pthread_utils.cc:191
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 149 (Thread 0x7ffe47fff6c0 (LWP 27856) "Ctrl USB Hotplu"):
#0  0x00007ffff311b4fd in __GI___poll (fds=0x7ffe40000b90, nfds=2, timeout=60000) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff36c22e5 in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libusb-1.0.so.0
#2  0x00007ffff36c3262 in libusb_handle_events_timeout_completed () from /opt/Ardour-9.0.rc2-dbg/lib/libusb-1.0.so.0
#3  0x00007ffff36c33ea in libusb_handle_events () from /opt/Ardour-9.0.rc2-dbg/lib/libusb-1.0.so.0
#4  0x00007ffff6c8ea00 in usb_hotplug_thread (user_data=0x555557724c10) at ../libs/ardour/control_protocol_manager.cc:87
#5  0x00007ffff4bbec48 in fake_thread_start (arg=0x5555644afc90) at ../libs/pbd/pthread_utils.cc:191
#6  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#7  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 148 (Thread 0x7ffe54ba36c0 (LWP 27855) "ArdourGUI"):
#0  0x00007ffff311b4fd in __GI___poll (fds=0x7ffe54ba2ce0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff36c9d00 in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libusb-1.0.so.0
#2  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#3  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 147 (Thread 0x7ffe553a46c0 (LWP 27854) "UI:Mackie"):
#0  0x00007ffff311b4fd in __GI___poll (fds=0x7ffe4c000b90, nfds=3, timeout=4) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff42fdc8e in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff42fe023 in g_main_loop_run () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff4b59cd3 in BaseUI::main_thread (this=0x55555c5999d8) at ../libs/pbd/base_ui.cc:101
#4  0x00007ffff4b5e673 in std::__invoke_impl<void, void (BaseUI::*&)(), BaseUI*&> (__f=@0x55555c81a450: (void (BaseUI::*)(class BaseUI * const)) 0x7ffff4b59aca <BaseUI::main_thread()>, __t=@0x55555c81a460: 0x55555c5999d8) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff4b5e497 in std::__invoke<void (BaseUI::*&)(), BaseUI*&> (__fn=@0x55555c81a450: (void (BaseUI::*)(class BaseUI * const)) 0x7ffff4b59aca <BaseUI::main_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff4b5e2fc in std::_Bind<void (BaseUI::*(BaseUI*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x55555c81a450, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff4b5dfdc in std::_Bind<void (BaseUI::*(BaseUI*))()>::operator()<, void>() (this=0x55555c81a450) at /usr/include/c++/10/functional:499
#8  0x00007ffff4b5da54 in std::__invoke_impl<void, std::_Bind<void (BaseUI::*(BaseUI*))()>&>(std::__invoke_other, std::_Bind<void (BaseUI::*(BaseUI*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff4b5d1e4 in std::__invoke_r<void, std::_Bind<void (BaseUI::*(BaseUI*))()>&>(std::_Bind<void (BaseUI::*(BaseUI*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff4b5c7e9 in std::_Function_handler<void (), std::_Bind<void (BaseUI::*(BaseUI*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x55555bfb6c78) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x55555bfb6c50) at ../libs/pbd/pthread_utils.cc:586
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 146 (Thread 0x7ffe55ba56c0 (LWP 27853) "UI:Generic MIDI"):
#0  0x00007ffff311b4fd in __GI___poll (fds=0x7ffe48038c30, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff42fdc8e in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff42fe023 in g_main_loop_run () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff4b59cd3 in BaseUI::main_thread (this=0x55555cab2928) at ../libs/pbd/base_ui.cc:101
#4  0x00007ffff4b5e673 in std::__invoke_impl<void, void (BaseUI::*&)(), BaseUI*&> (__f=@0x55555fa2bd30: (void (BaseUI::*)(class BaseUI * const)) 0x7ffff4b59aca <BaseUI::main_thread()>, __t=@0x55555fa2bd40: 0x55555cab2928) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff4b5e497 in std::__invoke<void (BaseUI::*&)(), BaseUI*&> (__fn=@0x55555fa2bd30: (void (BaseUI::*)(class BaseUI * const)) 0x7ffff4b59aca <BaseUI::main_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff4b5e2fc in std::_Bind<void (BaseUI::*(BaseUI*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x55555fa2bd30, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff4b5dfdc in std::_Bind<void (BaseUI::*(BaseUI*))()>::operator()<, void>() (this=0x55555fa2bd30) at /usr/include/c++/10/functional:499
#8  0x00007ffff4b5da54 in std::__invoke_impl<void, std::_Bind<void (BaseUI::*(BaseUI*))()>&>(std::__invoke_other, std::_Bind<void (BaseUI::*(BaseUI*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff4b5d1e4 in std::__invoke_r<void, std::_Bind<void (BaseUI::*(BaseUI*))()>&>(std::_Bind<void (BaseUI::*(BaseUI*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff4b5c7e9 in std::_Function_handler<void (), std::_Bind<void (BaseUI::*(BaseUI*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x55555bfb4828) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x55555bfb4800) at ../libs/pbd/pthread_utils.cc:586
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 145 (Thread 0x7ffe577fe6c0 (LWP 27852) "ArdourGUI"):
#0  __memset_avx512_unaligned_erms () at ../sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S:228
#1  0x00007fff800ae9a7 in ?? () from /home/martin/.lv2/Ratatouille.lv2/Ratatouille.so
#2  0x00007fff8009a78d in ?? () from /home/martin/.lv2/Ratatouille.lv2/Ratatouille.so
#3  0x00007fff8009f7f6 in ?? () from /home/martin/.lv2/Ratatouille.lv2/Ratatouille.so
#4  0x00007fff80059107 in ?? () from /home/martin/.lv2/Ratatouille.lv2/Ratatouille.so
#5  0x00007fff8005a5a0 in ?? () from /home/martin/.lv2/Ratatouille.lv2/Ratatouille.so
#6  0x00007fff8008a589 in ?? () from /home/martin/.lv2/Ratatouille.lv2/Ratatouille.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556bdfc0e0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 144 (Thread 0x7ffe57fff6c0 (LWP 27851) "LV2Worker"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x55556bdfca90) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff73842ac in ARDOUR::Worker::run (this=0x55556bdfca70) at ../libs/ardour/worker.cc:142
#3  0x00007ffff73856da in std::__invoke_impl<void, void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__f=@0x55556bdfbe80: (void (ARDOUR::Worker::*)(ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>, __t=@0x55556bdfbe90: 0x55556bdfca70) at /usr/include/c++/10/bits/invoke.h:73
#4  0x00007ffff7385637 in std::__invoke<void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__fn=@0x55556bdfbe80: (void (ARDOUR::Worker::*)(ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>) at /usr/include/c++/10/bits/invoke.h:95
--Type <RET> for more, q to quit, c to continue without paging--
#5  0x00007ffff73855c0 in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x55556bdfbe80, __args=...) at /usr/include/c++/10/functional:416
#6  0x00007ffff738554c in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::operator()<, void>() (this=0x55556bdfbe80) at /usr/include/c++/10/functional:499
#7  0x00007ffff7385450 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#8  0x00007ffff73852de in std::__invoke_r<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#9  0x00007ffff7385123 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#10 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x55556bdfc9a8) at /usr/include/c++/10/bits/std_function.h:622
#11 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x55556bdfc980) at ../libs/pbd/pthread_utils.cc:586
#12 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#13 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 143 (Thread 0x7ffe5d9ff6c0 (LWP 27850) "ArdourGUI"):
#0  0x00007ffff30ecadf in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x7ffe5d9febe0, rem=0x0) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
#1  0x00007ffff30f9a27 in __GI___nanosleep (req=<optimized out>, rem=<optimized out>) at ../sysdeps/unix/sysv/linux/nanosleep.c:25
#2  0x00007ffe5deb4ef9 in juce::Thread::sleep(int) () from /usr/lib/lv2/Surge XT.lv2/libSurge XT.so
#3  0x00007ffe5dbd900a in juce::MessageThread::run() () from /usr/lib/lv2/Surge XT.lv2/libSurge XT.so
#4  0x00007ffe5deb7b44 in juce::Thread::threadEntryPoint() () from /usr/lib/lv2/Surge XT.lv2/libSurge XT.so
#5  0x00007ffe5deb7cd9 in juce::Thread::createNativeThread(juce::Thread::Priority)::{lambda(void*)#1}::_FUN(void*) () from /usr/lib/lv2/Surge XT.lv2/libSurge XT.so
#6  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#7  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 142 (Thread 0x7ffe615fb6c0 (LWP 27849) "ZynMiddleWare"):
#0  0x00007ffff30ecadf in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=req@entry=0x7ffe615facc0, rem=rem@entry=0x0) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
#1  0x00007ffff30f9a27 in __GI___nanosleep (req=req@entry=0x7ffe615facc0, rem=rem@entry=0x0) at ../sysdeps/unix/sysv/linux/nanosleep.c:25
#2  0x00007ffff312975c in usleep (useconds=<optimized out>) at ../sysdeps/posix/usleep.c:31
#3  0x00007ffe63a3ed56 in ?? () from /usr/lib/lv2/ZynAddSubFX.lv2/ZynAddSubFX.so
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 140 (Thread 0x7ffe74bff6c0 (LWP 27847) "LV2Worker"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x55556af4ea60) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff73842ac in ARDOUR::Worker::run (this=0x55556af4ea40) at ../libs/ardour/worker.cc:142
#3  0x00007ffff73856da in std::__invoke_impl<void, void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__f=@0x55556af4ee60: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>, __t=@0x55556af4ee70: 0x55556af4ea40) at /usr/include/c++/10/bits/invoke.h:73
#4  0x00007ffff7385637 in std::__invoke<void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__fn=@0x55556af4ee60: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>) at /usr/include/c++/10/bits/invoke.h:95
#5  0x00007ffff73855c0 in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x55556af4ee60, __args=...) at /usr/include/c++/10/functional:416
#6  0x00007ffff738554c in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::operator()<, void>() (this=0x55556af4ee60) at /usr/include/c++/10/functional:499
#7  0x00007ffff7385450 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#8  0x00007ffff73852de in std::__invoke_r<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#9  0x00007ffff7385123 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#10 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x55556af4ecf8) at /usr/include/c++/10/bits/std_function.h:622
#11 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x55556af4ecd0) at ../libs/pbd/pthread_utils.cc:586
#12 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#13 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 139 (Thread 0x7ffe757fa6c0 (LWP 27846) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x55556a8a4878) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=<optimized out>, abstime=0x0, clockid=0, expected=0, futex_word=0x55556a8a4878) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55556a8a4878, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=<optimized out>) at ./nptl/futex-internal.c:139
#3  0x00007ffff30a4f1f in do_futex_wait (sem=sem@entry=0x55556a8a4878, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111
#4  0x00007ffff30a4fb8 in __new_sem_wait_slow64 (sem=0x55556a8a4878, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183
#5  0x00007ffe9b2b5b84 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffe9b24d3ea in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556a8be950) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 138 (Thread 0x7ffe75ffb6c0 (LWP 27845) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x55556a8a4850) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=<optimized out>, abstime=0x0, clockid=0, expected=0, futex_word=0x55556a8a4850) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55556a8a4850, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=<optimized out>) at ./nptl/futex-internal.c:139
#3  0x00007ffff30a4f1f in do_futex_wait (sem=sem@entry=0x55556a8a4850, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111
#4  0x00007ffff30a4fb8 in __new_sem_wait_slow64 (sem=0x55556a8a4850, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183
#5  0x00007ffe9b2b5b84 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffe9b255f52 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556a8943e0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 137 (Thread 0x7ffe767fc6c0 (LWP 27844) "LV2Worker"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x55556a7f3f70) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff73842ac in ARDOUR::Worker::run (this=0x55556a7f3f50) at ../libs/ardour/worker.cc:142
#3  0x00007ffff73856da in std::__invoke_impl<void, void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__f=@0x55556a8540b0: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>, __t=@0x55556a8540c0: 0x55556a7f3f50) at /usr/include/c++/10/bits/invoke.h:73
#4  0x00007ffff7385637 in std::__invoke<void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__fn=@0x55556a8540b0: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>) at /usr/include/c++/10/bits/invoke.h:95
#5  0x00007ffff73855c0 in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x55556a8540b0, __args=...) at /usr/include/c++/10/functional:416
#6  0x00007ffff738554c in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::operator()<, void>() (this=0x55556a8540b0) at /usr/include/c++/10/functional:499
#7  0x00007ffff7385450 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#8  0x00007ffff73852de in std::__invoke_r<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#9  0x00007ffff7385123 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#10 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x555569beb618) at /usr/include/c++/10/bits/std_function.h:622
#11 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x555569beb5f0) at ../libs/pbd/pthread_utils.cc:586
#12 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#13 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 136 (Thread 0x7ffe76ffd6c0 (LWP 27843) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x55556a2a3098) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=<optimized out>, abstime=0x0, clockid=0, expected=0, futex_word=0x55556a2a3098) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55556a2a3098, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=<optimized out>) at ./nptl/futex-internal.c:139
#3  0x00007ffff30a4f1f in do_futex_wait (sem=sem@entry=0x55556a2a3098, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111
#4  0x00007ffff30a4fb8 in __new_sem_wait_slow64 (sem=0x55556a2a3098, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183
#5  0x00007ffe9b2b5b84 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffe9b24d3ea in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556a2bd170) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
--Type <RET> for more, q to quit, c to continue without paging--
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 135 (Thread 0x7ffe777fe6c0 (LWP 27842) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x55556a2a3070) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=<optimized out>, abstime=0x0, clockid=0, expected=0, futex_word=0x55556a2a3070) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55556a2a3070, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=<optimized out>) at ./nptl/futex-internal.c:139
#3  0x00007ffff30a4f1f in do_futex_wait (sem=sem@entry=0x55556a2a3070, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111
#4  0x00007ffff30a4fb8 in __new_sem_wait_slow64 (sem=0x55556a2a3070, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183
#5  0x00007ffe9b2b5b84 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffe9b255f52 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556a292c00) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 134 (Thread 0x7ffe77fff6c0 (LWP 27841) "LV2Worker"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x55556a1f2790) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff73842ac in ARDOUR::Worker::run (this=0x55556a1f2770) at ../libs/ardour/worker.cc:142
#3  0x00007ffff73856da in std::__invoke_impl<void, void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__f=@0x55556a2528d0: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>, __t=@0x55556a2528e0: 0x55556a1f2770) at /usr/include/c++/10/bits/invoke.h:73
#4  0x00007ffff7385637 in std::__invoke<void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__fn=@0x55556a2528d0: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>) at /usr/include/c++/10/bits/invoke.h:95
#5  0x00007ffff73855c0 in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x55556a2528d0, __args=...) at /usr/include/c++/10/functional:416
#6  0x00007ffff738554c in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::operator()<, void>() (this=0x55556a2528d0) at /usr/include/c++/10/functional:499
#7  0x00007ffff7385450 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#8  0x00007ffff73852de in std::__invoke_r<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#9  0x00007ffff7385123 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#10 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x555569b9f638) at /usr/include/c++/10/bits/std_function.h:622
#11 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x555569b9f610) at ../libs/pbd/pthread_utils.cc:586
#12 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#13 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 133 (Thread 0x7ffe80ff96c0 (LWP 27840) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x555569ce7308) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=<optimized out>, abstime=0x0, clockid=0, expected=0, futex_word=0x555569ce7308) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x555569ce7308, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=<optimized out>) at ./nptl/futex-internal.c:139
#3  0x00007ffff30a4f1f in do_futex_wait (sem=sem@entry=0x555569ce7308, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111
#4  0x00007ffff30a4fb8 in __new_sem_wait_slow64 (sem=0x555569ce7308, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183
#5  0x00007ffe9b2b5b84 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffe9b24d3ea in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x555569d02f50) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 132 (Thread 0x7ffe817fa6c0 (LWP 27839) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x555569ce72e0) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=<optimized out>, abstime=0x0, clockid=0, expected=0, futex_word=0x555569ce72e0) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x555569ce72e0, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=<optimized out>) at ./nptl/futex-internal.c:139
#3  0x00007ffff30a4f1f in do_futex_wait (sem=sem@entry=0x555569ce72e0, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111
#4  0x00007ffff30a4fb8 in __new_sem_wait_slow64 (sem=0x555569ce72e0, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183
#5  0x00007ffe9b2b5b84 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffe9b255f52 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x555569cd6e70) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 131 (Thread 0x7ffe81ffb6c0 (LWP 27838) "LV2Worker"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555569c36a00) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff73842ac in ARDOUR::Worker::run (this=0x555569c369e0) at ../libs/ardour/worker.cc:142
#3  0x00007ffff73856da in std::__invoke_impl<void, void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__f=@0x555569c96b40: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>, __t=@0x555569c96b50: 0x555569c369e0) at /usr/include/c++/10/bits/invoke.h:73
#4  0x00007ffff7385637 in std::__invoke<void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__fn=@0x555569c96b40: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>) at /usr/include/c++/10/bits/invoke.h:95
#5  0x00007ffff73855c0 in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x555569c96b40, __args=...) at /usr/include/c++/10/functional:416
#6  0x00007ffff738554c in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::operator()<, void>() (this=0x555569c96b40) at /usr/include/c++/10/functional:499
#7  0x00007ffff7385450 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#8  0x00007ffff73852de in std::__invoke_r<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#9  0x00007ffff7385123 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#10 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x5555695a5398) at /usr/include/c++/10/bits/std_function.h:622
#11 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x5555695a5370) at ../libs/pbd/pthread_utils.cc:586
#12 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#13 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 130 (Thread 0x7ffe827fc6c0 (LWP 27837) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555696e5d98) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=<optimized out>, abstime=0x0, clockid=0, expected=0, futex_word=0x5555696e5d98) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555696e5d98, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=<optimized out>) at ./nptl/futex-internal.c:139
#3  0x00007ffff30a4f1f in do_futex_wait (sem=sem@entry=0x5555696e5d98, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111
#4  0x00007ffff30a4fb8 in __new_sem_wait_slow64 (sem=0x5555696e5d98, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183
#5  0x00007ffe9b2b5b84 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffe9b24d3ea in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x5555696ffe70) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 129 (Thread 0x7ffe82ffd6c0 (LWP 27836) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555696e5d70) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=<optimized out>, abstime=0x0, clockid=0, expected=0, futex_word=0x5555696e5d70) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555696e5d70, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=<optimized out>) at ./nptl/futex-internal.c:139
#3  0x00007ffff30a4f1f in do_futex_wait (sem=sem@entry=0x5555696e5d70, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111
#4  0x00007ffff30a4fb8 in __new_sem_wait_slow64 (sem=0x5555696e5d70, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183
#5  0x00007ffe9b2b5b84 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffe9b255f52 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x5555696d5900) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
--Type <RET> for more, q to quit, c to continue without paging--
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 128 (Thread 0x7ffe837fe6c0 (LWP 27835) "LV2Worker"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555569635430) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff73842ac in ARDOUR::Worker::run (this=0x555569635410) at ../libs/ardour/worker.cc:142
#3  0x00007ffff73856da in std::__invoke_impl<void, void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__f=@0x555569695570: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>, __t=@0x555569695580: 0x555569635410) at /usr/include/c++/10/bits/invoke.h:73
#4  0x00007ffff7385637 in std::__invoke<void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__fn=@0x555569695570: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>) at /usr/include/c++/10/bits/invoke.h:95
#5  0x00007ffff73855c0 in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x555569695570, __args=...) at /usr/include/c++/10/functional:416
#6  0x00007ffff738554c in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::operator()<, void>() (this=0x555569695570) at /usr/include/c++/10/functional:499
#7  0x00007ffff7385450 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#8  0x00007ffff73852de in std::__invoke_r<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#9  0x00007ffff7385123 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#10 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x5555696956a8) at /usr/include/c++/10/bits/std_function.h:622
#11 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x555569695680) at ../libs/pbd/pthread_utils.cc:586
#12 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#13 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 127 (Thread 0x7ffe83fff6c0 (LWP 27834) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555690a4158) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=<optimized out>, abstime=0x0, clockid=0, expected=0, futex_word=0x5555690a4158) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555690a4158, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=<optimized out>) at ./nptl/futex-internal.c:139
#3  0x00007ffff30a4f1f in do_futex_wait (sem=sem@entry=0x5555690a4158, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111
#4  0x00007ffff30a4fb8 in __new_sem_wait_slow64 (sem=0x5555690a4158, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183
#5  0x00007ffe9b2b5b84 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffe9b24d3ea in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x5555690be230) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 126 (Thread 0x7ffe88fe96c0 (LWP 27833) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555690a4130) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=<optimized out>, abstime=0x0, clockid=0, expected=0, futex_word=0x5555690a4130) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555690a4130, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=<optimized out>) at ./nptl/futex-internal.c:139
#3  0x00007ffff30a4f1f in do_futex_wait (sem=sem@entry=0x5555690a4130, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111
#4  0x00007ffff30a4fb8 in __new_sem_wait_slow64 (sem=0x5555690a4130, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183
#5  0x00007ffe9b2b5b84 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffe9b255f52 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x555569093cc0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 125 (Thread 0x7ffe897ea6c0 (LWP 27832) "LV2Worker"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555568ff3850) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff73842ac in ARDOUR::Worker::run (this=0x555568ff3830) at ../libs/ardour/worker.cc:142
#3  0x00007ffff73856da in std::__invoke_impl<void, void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__f=@0x555569053990: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>, __t=@0x5555690539a0: 0x555568ff3830) at /usr/include/c++/10/bits/invoke.h:73
#4  0x00007ffff7385637 in std::__invoke<void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__fn=@0x555569053990: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>) at /usr/include/c++/10/bits/invoke.h:95
#5  0x00007ffff73855c0 in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x555569053990, __args=...) at /usr/include/c++/10/functional:416
#6  0x00007ffff738554c in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::operator()<, void>() (this=0x555569053990) at /usr/include/c++/10/functional:499
#7  0x00007ffff7385450 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#8  0x00007ffff73852de in std::__invoke_r<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#9  0x00007ffff7385123 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#10 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x5555689e64b8) at /usr/include/c++/10/bits/std_function.h:622
#11 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x5555689e6490) at ../libs/pbd/pthread_utils.cc:586
#12 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#13 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 124 (Thread 0x7ffe89feb6c0 (LWP 27831) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x555568adb548) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=<optimized out>, abstime=0x0, clockid=0, expected=0, futex_word=0x555568adb548) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x555568adb548, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=<optimized out>) at ./nptl/futex-internal.c:139
#3  0x00007ffff30a4f1f in do_futex_wait (sem=sem@entry=0x555568adb548, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111
#4  0x00007ffff30a4fb8 in __new_sem_wait_slow64 (sem=0x555568adb548, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183
#5  0x00007ffe9b2b5b84 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffe9b24d3ea in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x555568af7190) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 123 (Thread 0x7ffe8a7ec6c0 (LWP 27830) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x555568adb520) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=<optimized out>, abstime=0x0, clockid=0, expected=0, futex_word=0x555568adb520) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x555568adb520, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=<optimized out>) at ./nptl/futex-internal.c:139
#3  0x00007ffff30a4f1f in do_futex_wait (sem=sem@entry=0x555568adb520, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111
#4  0x00007ffff30a4fb8 in __new_sem_wait_slow64 (sem=0x555568adb520, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183
#5  0x00007ffe9b2b5b84 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffe9b255f52 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x555568acb0b0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 122 (Thread 0x7ffe8afed6c0 (LWP 27829) "LV2Worker"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555568a2ac40) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff73842ac in ARDOUR::Worker::run (this=0x555568a2ac20) at ../libs/ardour/worker.cc:142
#3  0x00007ffff73856da in std::__invoke_impl<void, void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__f=@0x555568a8ad80: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>, __t=@0x555568a8ad90: 0x555568a2ac20) at /usr/include/c++/10/bits/invoke.h:73
#4  0x00007ffff7385637 in std::__invoke<void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__fn=@0x555568a8ad80: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>) at /usr/include/c++/10/bits/invoke.h:95
#5  0x00007ffff73855c0 in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x555568a8ad80, __args=...) at /usr/include/c++/10/functional:416
#6  0x00007ffff738554c in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::operator()<, void>() (this=0x555568a8ad80) at /usr/include/c++/10/functional:499
#7  0x00007ffff7385450 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#8  0x00007ffff73852de in std::__invoke_r<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#9  0x00007ffff7385123 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
--Type <RET> for more, q to quit, c to continue without paging--
#10 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x55556827fdd8) at /usr/include/c++/10/bits/std_function.h:622
#11 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x55556827fdb0) at ../libs/pbd/pthread_utils.cc:586
#12 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#13 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 121 (Thread 0x7ffe8b7ee6c0 (LWP 27828) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848f4d0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 120 (Thread 0x7ffe8bfef6c0 (LWP 27827) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848f2f0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 119 (Thread 0x7ffe8c7f06c0 (LWP 27826) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848f110) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 118 (Thread 0x7ffe8cff16c0 (LWP 27825) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848ef30) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 117 (Thread 0x7ffe8d7f26c0 (LWP 27824) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848ed50) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 116 (Thread 0x7ffe8dff36c0 (LWP 27823) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848eb70) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 115 (Thread 0x7ffe8e7f46c0 (LWP 27822) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848e990) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 114 (Thread 0x7ffe8eff56c0 (LWP 27821) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848e7b0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

--Type <RET> for more, q to quit, c to continue without paging--
Thread 113 (Thread 0x7ffe8f7f66c0 (LWP 27820) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848e5d0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 112 (Thread 0x7ffe8fff76c0 (LWP 27819) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848e3f0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 111 (Thread 0x7ffe907f86c0 (LWP 27818) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848e210) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 110 (Thread 0x7ffe90ff96c0 (LWP 27817) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848e030) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 109 (Thread 0x7ffe917fa6c0 (LWP 27816) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848de50) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 108 (Thread 0x7ffe91ffb6c0 (LWP 27815) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848dc70) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 107 (Thread 0x7ffe927fc6c0 (LWP 27814) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848da90) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 106 (Thread 0x7ffe92ffd6c0 (LWP 27813) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848d8b0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 105 (Thread 0x7ffe937fe6c0 (LWP 27812) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
--Type <RET> for more, q to quit, c to continue without paging--
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848d6d0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 104 (Thread 0x7ffe93fff6c0 (LWP 27811) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848d4f0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 103 (Thread 0x7ffe989fa6c0 (LWP 27810) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848cef0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 102 (Thread 0x7ffe991fb6c0 (LWP 27809) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848af60) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 101 (Thread 0x7ffe999fc6c0 (LWP 27808) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=32766, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=32766, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848cf10) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 100 (Thread 0x7ffe9a1fd6c0 (LWP 27807) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=-1077989852, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=-1077989852, abstime=0x0, clockid=0, expected=0, futex_word=0x5555683155b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5555683155b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x00007ffff309b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x555568315568, cond=0x555568315590) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x555568315590, mutex=0x555568315568) at ./nptl/pthread_cond_wait.c:627
#5  0x00007ffe9b258d2b in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848cd10) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#7  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 99 (Thread 0x7ffe9a9fe6c0 (LWP 27806) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x555568470e08) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=<optimized out>, abstime=0x0, clockid=0, expected=0, futex_word=0x555568470e08) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x555568470e08, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=<optimized out>) at ./nptl/futex-internal.c:139
#3  0x00007ffff30a4f1f in do_futex_wait (sem=sem@entry=0x555568470e08, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111
#4  0x00007ffff30a4fb8 in __new_sem_wait_slow64 (sem=0x555568470e08, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183
#5  0x00007ffe9b2b5b84 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffe9b24d3ea in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x55556848cad0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 98 (Thread 0x7ffe9b1ff6c0 (LWP 27805) "ArdourGUI"):
#0  0x00007ffff3098d71 in __futex_abstimed_wait_common64 (private=<optimized out>, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x555568470de0) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=<optimized out>, abstime=0x0, clockid=0, expected=0, futex_word=0x555568470de0) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x555568470de0, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=<optimized out>) at ./nptl/futex-internal.c:139
#3  0x00007ffff30a4f1f in do_futex_wait (sem=sem@entry=0x555568470de0, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:111
#4  0x00007ffff30a4fb8 in __new_sem_wait_slow64 (sem=0x555568470de0, abstime=0x0, clockid=0) at ./nptl/sem_waitcommon.c:183
#5  0x00007ffe9b2b5b84 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#6  0x00007ffe9b255f52 in ?? () from /usr/lib/lv2/sfizz.lv2/Contents/Binary/sfizz.so
#7  0x00007ffff34ecdb4 in std::execute_native_thread_routine (__p=0x5555683155f0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:104
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 97 (Thread 0x7ffe9bfff6c0 (LWP 27802) "LV2Worker"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555568313300) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff73842ac in ARDOUR::Worker::run (this=0x5555683132e0) at ../libs/ardour/worker.cc:142
#3  0x00007ffff73856da in std::__invoke_impl<void, void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__f=@0x555568311fd0: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>, __t=@0x555568311fe0: 0x5555683132e0) at /usr/include/c++/10/bits/invoke.h:73
#4  0x00007ffff7385637 in std::__invoke<void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__fn=@0x555568311fd0: (void (ARDOUR::Worker::*)(class ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>) at /usr/include/c++/10/bits/invoke.h:95
#5  0x00007ffff73855c0 in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x555568311fd0, __args=...) at /usr/include/c++/10/functional:416
#6  0x00007ffff738554c in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::operator()<, void>() (this=0x555568311fd0) at /usr/include/c++/10/functional:499
--Type <RET> for more, q to quit, c to continue without paging--
#7  0x00007ffff7385450 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#8  0x00007ffff73852de in std::__invoke_r<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#9  0x00007ffff7385123 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#10 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x555568315f58) at /usr/include/c++/10/bits/std_function.h:622
#11 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x555568315f30) at ../libs/pbd/pthread_utils.cc:586
#12 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#13 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 96 (Thread 0x7fffbd7fa6c0 (LWP 27801) "LV2Worker"):
#0  0x00007ffff3aa3d44 in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libfftw3f.so.3
#1  0x00007ffff3a4fc56 in fftwf_plan_awake () from /opt/Ardour-9.0.rc2-dbg/lib/libfftw3f.so.3
#2  0x00007ffff3a4fc56 in fftwf_plan_awake () from /opt/Ardour-9.0.rc2-dbg/lib/libfftw3f.so.3
#3  0x00007ffff3b37852 in fftwf_destroy_plan () from /opt/Ardour-9.0.rc2-dbg/lib/libfftw3f.so.3
#4  0x00007fffbf845dcb in Convlevel::cleanup (this=this@entry=0x555567efd670) at /build/zita-convolver-KNKkys/zita-convolver-4.0.3/source/zita-convolver.cc:671
#5  0x00007fffbf845e35 in Convlevel::~Convlevel (this=<optimized out>, this=<optimized out>) at /build/zita-convolver-KNKkys/zita-convolver-4.0.3/source/zita-convolver.cc:433
#6  0x00007fffbf845f25 in Convproc::cleanup (this=0x555568051680) at /build/zita-convolver-KNKkys/zita-convolver-4.0.3/source/zita-convolver.cc:369
#7  0x00007fffd800afc0 in ?? () from /usr/lib/lv2/gx_cabinet.lv2/gx_cabinet.so
#8  0x00007fffd800a76d in ?? () from /usr/lib/lv2/gx_cabinet.lv2/gx_cabinet.so
#9  0x00007ffff73928c6 in ARDOUR::LV2Plugin::work (this=0x55556801eb70, worker=..., size=1, data=0x7fff9c0008e0) at ../libs/ardour/lv2_plugin.cc:2305
#10 0x00007ffff73844cb in ARDOUR::Worker::run (this=0x555568050640) at ../libs/ardour/worker.cc:183
#11 0x00007ffff73856da in std::__invoke_impl<void, void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__f=@0x55556804d0d0: (void (ARDOUR::Worker::*)(ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>, __t=@0x55556804d0e0: 0x555568050640) at /usr/include/c++/10/bits/invoke.h:73
#12 0x00007ffff7385637 in std::__invoke<void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__fn=@0x55556804d0d0: (void (ARDOUR::Worker::*)(ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>) at /usr/include/c++/10/bits/invoke.h:95
#13 0x00007ffff73855c0 in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x55556804d0d0, __args=...) at /usr/include/c++/10/functional:416
#14 0x00007ffff738554c in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::operator()<, void>() (this=0x55556804d0d0) at /usr/include/c++/10/functional:499
#15 0x00007ffff7385450 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#16 0x00007ffff73852de in std::__invoke_r<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#17 0x00007ffff7385123 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#18 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x5555680508e8) at /usr/include/c++/10/bits/std_function.h:622
#19 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x5555680508c0) at ../libs/pbd/pthread_utils.cc:586
#20 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#21 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 95 (Thread 0x7fffbf7fe6c0 (LWP 27800) "LV2Worker"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555567f2ebd0) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff73842ac in ARDOUR::Worker::run (this=0x555567f2ebb0) at ../libs/ardour/worker.cc:142
#3  0x00007ffff73856da in std::__invoke_impl<void, void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__f=@0x555567f8ed10: (void (ARDOUR::Worker::*)(ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>, __t=@0x555567f8ed20: 0x555567f2ebb0) at /usr/include/c++/10/bits/invoke.h:73
#4  0x00007ffff7385637 in std::__invoke<void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__fn=@0x555567f8ed10: (void (ARDOUR::Worker::*)(ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>) at /usr/include/c++/10/bits/invoke.h:95
#5  0x00007ffff73855c0 in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x555567f8ed10, __args=...) at /usr/include/c++/10/functional:416
#6  0x00007ffff738554c in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::operator()<, void>() (this=0x555567f8ed10) at /usr/include/c++/10/functional:499
#7  0x00007ffff7385450 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#8  0x00007ffff73852de in std::__invoke_r<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#9  0x00007ffff7385123 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#10 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x555567f8ee48) at /usr/include/c++/10/bits/std_function.h:622
#11 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x555567f8ee20) at ../libs/pbd/pthread_utils.cc:586
#12 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#13 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 94 (Thread 0x7ffea992d6c0 (LWP 27799) "LV2Worker"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555567a39fe0) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff73842ac in ARDOUR::Worker::run (this=0x555567a39fc0) at ../libs/ardour/worker.cc:142
#3  0x00007ffff73856da in std::__invoke_impl<void, void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__f=@0x555567a39f00: (void (ARDOUR::Worker::*)(ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>, __t=@0x555567a39f10: 0x555567a39fc0) at /usr/include/c++/10/bits/invoke.h:73
#4  0x00007ffff7385637 in std::__invoke<void (ARDOUR::Worker::*&)(), ARDOUR::Worker*&> (__fn=@0x555567a39f00: (void (ARDOUR::Worker::*)(ARDOUR::Worker * const)) 0x7ffff7384280 <ARDOUR::Worker::run()>) at /usr/include/c++/10/bits/invoke.h:95
#5  0x00007ffff73855c0 in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x555567a39f00, __args=...) at /usr/include/c++/10/functional:416
#6  0x00007ffff738554c in std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>::operator()<, void>() (this=0x555567a39f00) at /usr/include/c++/10/functional:499
#7  0x00007ffff7385450 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#8  0x00007ffff73852de in std::__invoke_r<void, std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&>(std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#9  0x00007ffff7385123 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Worker::*(ARDOUR::Worker*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#10 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x555567a36ca8) at /usr/include/c++/10/bits/std_function.h:622
#11 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x555567a36c80) at ../libs/pbd/pthread_utils.cc:586
#12 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#13 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 93 (Thread 0x7ffeaa12e6c0 (LWP 27798) "midiUI"):
#0  0x00007ffff311b4fd in __GI___poll (fds=0x7ffe9c041940, nfds=4, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff42fdc8e in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff42fe023 in g_main_loop_run () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff4b59cd3 in BaseUI::main_thread (this=0x55555a0336d0) at ../libs/pbd/base_ui.cc:101
#4  0x00007ffff4b5e673 in std::__invoke_impl<void, void (BaseUI::*&)(), BaseUI*&> (__f=@0x5555677c79a0: (void (BaseUI::*)(BaseUI * const)) 0x7ffff4b59aca <BaseUI::main_thread()>, __t=@0x5555677c79b0: 0x55555a0336d0) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff4b5e497 in std::__invoke<void (BaseUI::*&)(), BaseUI*&> (__fn=@0x5555677c79a0: (void (BaseUI::*)(BaseUI * const)) 0x7ffff4b59aca <BaseUI::main_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff4b5e2fc in std::_Bind<void (BaseUI::*(BaseUI*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x5555677c79a0, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff4b5dfdc in std::_Bind<void (BaseUI::*(BaseUI*))()>::operator()<, void>() (this=0x5555677c79a0) at /usr/include/c++/10/functional:499
#8  0x00007ffff4b5da54 in std::__invoke_impl<void, std::_Bind<void (BaseUI::*(BaseUI*))()>&>(std::__invoke_other, std::_Bind<void (BaseUI::*(BaseUI*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff4b5d1e4 in std::__invoke_r<void, std::_Bind<void (BaseUI::*(BaseUI*))()>&>(std::_Bind<void (BaseUI::*(BaseUI*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff4b5c7e9 in std::_Function_handler<void (), std::_Bind<void (BaseUI::*(BaseUI*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x5555677dd688) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x5555677dd660) at ../libs/pbd/pthread_utils.cc:586
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 92 (Thread 0x7fffbf8e6900 (LWP 27797) "butler"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88df4) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e3a4 in ARDOUR::IOTaskList::process (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:120
#3  0x00007ffff6c79051 in ARDOUR::Butler::thread_work (this=0x55555abc0620) at ../libs/ardour/butler.cc:316
#4  0x00007ffff6c77c09 in ARDOUR::Butler::_thread_work (arg=0x55555abc0620) at ../libs/ardour/butler.cc:178
#5  0x00007ffff4bbec48 in fake_thread_start (arg=0x555567798d30) at ../libs/pbd/pthread_utils.cc:191
#6  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#7  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 91 (Thread 0x7ffeca7fc6c0 (LWP 27793) "IO-32788-0x7ffe"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
--Type <RET> for more, q to quit, c to continue without paging--
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 90 (Thread 0x7ffed4ff96c0 (LWP 27792) "IO-32787-0x7ffe"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 89 (Thread 0x7ffed6ffd6c0 (LWP 27791) "IO-32786-0x7ffe"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 88 (Thread 0x7ffedd7fa6c0 (LWP 27790) "IO-32785-0x7ffe"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 87 (Thread 0x7ffedf7fe6c0 (LWP 27789) "IO-32784-0x7ffe"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 86 (Thread 0x7ffee9ffb6c0 (LWP 27788) "IO-32783-0x7ffe"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 85 (Thread 0x7ffeebfff6c0 (LWP 27787) "IO-32782-0x7ffe"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 84 (Thread 0x7ffef67fc6c0 (LWP 27786) "IO-32781-0x7ffe"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 83 (Thread 0x7fff00ff96c0 (LWP 27785) "IO-32780-0x7fff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 82 (Thread 0x7fff02ffd6c0 (LWP 27784) "IO-32779-0x7fff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 81 (Thread 0x7fff0d7fa6c0 (LWP 27783) "IO-32778-0x7fff"):
#0  __memset_avx512_unaligned_erms () at ../sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S:228
#1  0x00007ffff6bca28b in ARDOUR::AudioPlaylist::read (this=0x555565cbd520, buf=0x7fff01ffc010, mixdown_buffer=0x7fff017fb010, gain_buffer=0x7fff00ffa010, start=..., cnt=..., chan_n=0) at ../libs/ardour/audio_playlist.cc:203
#2  0x00007ffff6cb9aef in ARDOUR::DiskReader::audio_read (this=0x555565b062c0, sum_buffer=0x7fff01ffc010, mixdown_buffer=0x7fff017fb010, gain_buffer=0x7fff00ffa010, start=@0x7fff0d7f9438: 0, cnt=1040384, rci=0x555565cc0630, channel=0, reversed=false) at ../libs/ardour/disk_reader.cc:1072
#3  0x00007ffff6cbad22 in ARDOUR::DiskReader::refill_audio (this=0x555565b062c0, sum_buffer=0x7fff01ffc010, mixdown_buffer=0x7fff017fb010, gain_buffer=0x7fff00ffa010, fill_level=0, reversed=false) at ../libs/ardour/disk_reader.cc:1333
#4  0x00007ffff6cba10b in ARDOUR::DiskReader::refill (this=0x555565b062c0, sum_buffer=0x7fff01ffc010, mixdown_buffer=0x7fff017fb010, gain_buffer=0x7fff00ffa010, fill_level=0, reversed=false) at ../libs/ardour/disk_reader.cc:1156
#5  0x00007ffff6cb9f64 in ARDOUR::DiskReader::do_refill (this=0x555565b062c0) at ../libs/ardour/disk_reader.cc:1127
#6  0x00007ffff7303f44 in ARDOUR::Track::do_refill (this=0x5555655dc420) at ../libs/ardour/track.cc:620
#7  0x00007ffff6c77cbc in operator() (__closure=0x7ffeec0096c0) at ../libs/ardour/butler.cc:298
#8  0x00007ffff6c7ab92 in std::__invoke_impl<void, ARDOUR::Butler::thread_work()::<lambda()>&>(std::__invoke_other, struct {...} &) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6c7aa90 in std::__invoke_r<void, ARDOUR::Butler::thread_work()::<lambda()>&>(struct {...} &) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6c7a92e in std::_Function_handler<void(), ARDOUR::Butler::thread_work()::<lambda()> >::_M_invoke(const std::_Any_data &) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff0d7f9bc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007ffff6e2e890 in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:183
#13 0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
--Type <RET> for more, q to quit, c to continue without paging--
#14 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#15 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 80 (Thread 0x7fff0f7fe6c0 (LWP 27782) "IO-32777-0x7fff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 79 (Thread 0x7fff15ffb6c0 (LWP 27781) "IO-32776-0x7fff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 78 (Thread 0x7fff17fff6c0 (LWP 27780) "IO-32775-0x7fff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 77 (Thread 0x7fff227fc6c0 (LWP 27779) "IO-32774-0x7fff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 76 (Thread 0x7fff2cff96c0 (LWP 27778) "IO-32773-0x7fff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 75 (Thread 0x7fff2effd6c0 (LWP 27777) "IO-32772-0x7fff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 74 (Thread 0x7fff397fa6c0 (LWP 27776) "IO-32771-0x7fff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 73 (Thread 0x7fff3b7fe6c0 (LWP 27775) "IO-32770-0x7fff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 72 (Thread 0x7fff45ffb6c0 (LWP 27774) "IO-32769-0x7fff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 71 (Thread 0x7fff47fff6c0 (LWP 27773) "IO-32768-0x7fff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 70 (Thread 0x7fff5cff96c0 (LWP 27772) "IO-32767-0x7fff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555557a88dec) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6e2e7df in ARDOUR::IOTaskList::io_thread (this=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:166
#3  0x00007ffff6e2e70c in ARDOUR::IOTaskList::_worker_thread (me=0x555557a88db0) at ../libs/ardour/io_tasklist.cc:154
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 69 (Thread 0x7fff5d7fa6c0 (LWP 27771) "RT-22-0x7fff5d7"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
--Type <RET> for more, q to quit, c to continue without paging--
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff40000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff40000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff40000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff40000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff40000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff5d7f9cc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555a86c4b0) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 68 (Thread 0x7fff5dffb6c0 (LWP 27770) "RT-21-0x7fff5df"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff4c000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff4c000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff4c000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff4c000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff4c000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff5dffacc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555a86c260) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 67 (Thread 0x7fff5e7fc6c0 (LWP 27769) "RT-20-0x7fff5e7"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78270) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbe5a3 in ARDOUR::Graph::reached_terminal_node (this=0x555559c78130) at ../libs/ardour/graph.cc:267
#3  0x00007ffff6dca8db in ARDOUR::GraphNode::finish (this=0x555567979e48, chain=0x7fffac01b950) at ../libs/ardour/graphnode.cc:107
#4  0x00007ffff6dca7c0 in ARDOUR::GraphNode::run (this=0x555567979e48, chain=0x7fffac01b950) at ../libs/ardour/graphnode.cc:74
#5  0x00007ffff6dbed1a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:344
#6  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#7  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff48000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff48000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#8  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff48000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#9  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff48000b70, __args=...) at /usr/include/c++/10/functional:416
#10 0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff48000b70) at /usr/include/c++/10/functional:499
#11 0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#12 0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#13 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#14 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff5e7fbcc0) at /usr/include/c++/10/bits/std_function.h:622
#15 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555a86c010) at ../libs/backends/jack/jack_audiobackend.cc:895
#16 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#17 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 66 (Thread 0x7fff5effd6c0 (LWP 27768) "RT-19-0x7fff5ef"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff54000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff54000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff54000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff54000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff54000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff5effccc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555ac78710) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 65 (Thread 0x7fff5f7fe6c0 (LWP 27767) "RT-18-0x7fff5f7"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff50000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff50000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff50000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff50000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff50000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff5f7fdcc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555ac78670) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 64 (Thread 0x7fff5ffff6c0 (LWP 27766) "RT-17-0x7fff5ff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff58000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff58000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff58000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
--Type <RET> for more, q to quit, c to continue without paging--
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff58000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff58000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff5fffecc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555ac78420) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 63 (Thread 0x7fff80ff96c0 (LWP 27765) "RT-16-0x7fff80f"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff64000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff64000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff64000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff64000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff64000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff80ff8cc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5555595cb5c0) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 62 (Thread 0x7fff817fa6c0 (LWP 27764) "RT-15-0x7fff817"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff60000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff60000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff60000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff60000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff60000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff817f9cc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5555595ce5c0) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 61 (Thread 0x7fff81ffb6c0 (LWP 27763) "RT-14-0x7fff81f"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff6c000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff6c000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff6c000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff6c000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff6c000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff81ffacc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555a867900) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 60 (Thread 0x7fff827fc6c0 (LWP 27762) "RT-13-0x7fff827"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff68000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff68000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff68000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff68000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff68000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff827fbcc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5555595cf1a0) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 59 (Thread 0x7fff82ffd6c0 (LWP 27761) "RT-12-0x7fff82f"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff74000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff74000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff74000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff74000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff74000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff82ffccc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555ac78f80) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
--Type <RET> for more, q to quit, c to continue without paging--
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 58 (Thread 0x7fff837fe6c0 (LWP 27760) "RT-11-0x7fff837"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff70000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff70000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff70000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff70000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff70000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff837fdcc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555a873a30) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 57 (Thread 0x7fff83fff6c0 (LWP 27759) "RT-10-0x7fff83f"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff78000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff78000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff78000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff78000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff78000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff83ffecc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5555595cd1c0) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 56 (Thread 0x7fff98ff96c0 (LWP 27758) "RT-9-0x7fff98ff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff7c000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff7c000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff7c000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff7c000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff7c000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff98ff8cc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555a86f270) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 55 (Thread 0x7fff997fa6c0 (LWP 27757) "RT-8-0x7fff997f"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff88000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff88000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff88000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff88000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff88000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff997f9cc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5555595cc1c0) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 54 (Thread 0x7fff99ffb6c0 (LWP 27756) "RT-7-0x7fff99ff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff84000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff84000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff84000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff84000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff84000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff99ffacc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555a866dc0) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 53 (Thread 0x7fff9a7fc6c0 (LWP 27755) "RT-6-0x7fff9a7f"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff90000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff90000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
--Type <RET> for more, q to quit, c to continue without paging--
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff90000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff90000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff90000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff9a7fbcc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x5555595cf950) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 52 (Thread 0x7fff9affd6c0 (LWP 27754) "RT-5-0x7fff9aff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff8c000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff8c000b80: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff8c000b70: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff8c000b70, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff8c000b70) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff9affccc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x555557d0e230) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 51 (Thread 0x7fff9b7fe6c0 (LWP 27753) "RT-4-0x7fff9b7f"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fff94000f90: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fff94000fa0: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fff94000f90: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fff94000f90, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fff94000f90) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fff9b7fdcc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x555559aef9d0) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 50 (Thread 0x7fffbcff96c0 (LWP 27752) "RT-3-0x7fffbcff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fffa0001fa0: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fffa0001fb0: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fffa0001fa0: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fffa0001fa0, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fffa0001fa0) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fffbcff8cc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555901ba60) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 49 (Thread 0x7fffbe7fc6c0 (LWP 27751) "RT-2-0x7fffbe7f"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fffc4004760: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fffc4004770: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fffc4004760: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fffc4004760, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fffc4004760) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fffbe7fbcc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555aff9d50) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 48 (Thread 0x7fffbdffb6c0 (LWP 27750) "RT-1-0x7fffbdff"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf0fd in ARDOUR::Graph::helper_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:372
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fffc00041e0: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>, __t=@0x7fffc00041f0: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fffc00041e0: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbef12 <ARDOUR::Graph::helper_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fffc00041e0, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fffc00041e0) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fffbdffacc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x55555f8bb560) at ../libs/backends/jack/jack_audiobackend.cc:895
--Type <RET> for more, q to quit, c to continue without paging--
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 47 (Thread 0x7fffbeffd6c0 (LWP 27749) "RT-main-0x7fffb"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff4bc778a in PBD::Semaphore::wait (this=0x555559c78264) at ../libs/pbd/semutils.cc:120
#2  0x00007ffff6dbeb6a in ARDOUR::Graph::run_one (this=0x555559c78130) at ../libs/ardour/graph.cc:320
#3  0x00007ffff6dbf569 in ARDOUR::Graph::main_thread (this=0x555559c78130) at ../libs/ardour/graph.cc:425
#4  0x00007ffff6dc9f83 in std::__invoke_impl<void, void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__f=@0x7fffa801c1e0: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbf1b4 <ARDOUR::Graph::main_thread()>, __t=@0x7fffa801c1f0: 0x555559c78130) at /usr/include/c++/10/bits/invoke.h:73
#5  0x00007ffff6dc9c5f in std::__invoke<void (ARDOUR::Graph::*&)(), ARDOUR::Graph*&> (__fn=@0x7fffa801c1e0: (void (ARDOUR::Graph::*)(ARDOUR::Graph * const)) 0x7ffff6dbf1b4 <ARDOUR::Graph::main_thread()>) at /usr/include/c++/10/bits/invoke.h:95
#6  0x00007ffff6dc9412 in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x7fffa801c1e0, __args=...) at /usr/include/c++/10/functional:416
#7  0x00007ffff6dc879e in std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>::operator()<, void>() (this=0x7fffa801c1e0) at /usr/include/c++/10/functional:499
#8  0x00007ffff6dc73d1 in std::__invoke_impl<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#9  0x00007ffff6dc5753 in std::__invoke_r<void, std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&>(std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#10 0x00007ffff6dc46f0 in std::_Function_handler<void (), std::_Bind<void (ARDOUR::Graph::*(ARDOUR::Graph*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#11 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x7fffbeffccc0) at /usr/include/c++/10/bits/std_function.h:622
#12 0x00007fffe0218812 in ARDOUR::JACKAudioBackend::_start_process_thread (arg=0x555557d06f10) at ../libs/backends/jack/jack_audiobackend.cc:895
#13 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#14 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 45 (Thread 0x7fff9bfff6c0 (LWP 27747) "pool"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff434da0a in g_cond_wait_until () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff42cb50e in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff42cbbfb in g_async_queue_timeout_pop () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#4  0x00007ffff432b509 in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#5  0x00007ffff432ac35 in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#6  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#7  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 35 (Thread 0x7fffd92746c0 (LWP 27693) "AudioEngine 1"):
#0  0x00007ffff312a072 in epoll_wait (epfd=17, events=0x7fffd9273420, maxevents=32, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007fffe10a3138 in ?? () from /usr/lib/x86_64-linux-gnu/spa-0.2/support/libspa-support.so
#2  0x00007fffe10964cc in ?? () from /usr/lib/x86_64-linux-gnu/spa-0.2/support/libspa-support.so
#3  0x00007fffdbf604cc in pw_data_loop_wait () from /lib/x86_64-linux-gnu/libpipewire-0.3.so.0
#4  0x00007fffe18b0eb0 in jack_cycle_wait () from /usr/lib/x86_64-linux-gnu/pipewire-0.3/jack/libjack.so.0
#5  0x00007fffe023d6dd in WJACK_cycle_wait (client=0x555557b822b0) at ../libs/backends/jack/weak_libjack.def:95
#6  0x00007fffe02188d5 in ARDOUR::JACKAudioBackend::process_thread (this=0x5555579844a0) at ../libs/backends/jack/jack_audiobackend.cc:924
#7  0x00007fffe0218860 in ARDOUR::JACKAudioBackend::_process_thread (arg=0x5555579844a0) at ../libs/backends/jack/jack_audiobackend.cc:903
#8  0x00007fffe109664d in ?? () from /usr/lib/x86_64-linux-gnu/spa-0.2/support/libspa-support.so
#9  0x00007fffdbf657b6 in ?? () from /lib/x86_64-linux-gnu/libpipewire-0.3.so.0
#10 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#11 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 34 (Thread 0x7fffd8a736c0 (LWP 27692) "pw-ardour"):
#0  0x00007ffff312a072 in epoll_wait (epfd=21, events=0x7fffd8a728c0, maxevents=32, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007fffe10a3138 in ?? () from /usr/lib/x86_64-linux-gnu/spa-0.2/support/libspa-support.so
#2  0x00007fffe1094c59 in ?? () from /usr/lib/x86_64-linux-gnu/spa-0.2/support/libspa-support.so
#3  0x00007fffdbfb1c67 in ?? () from /lib/x86_64-linux-gnu/libpipewire-0.3.so.0
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 33 (Thread 0x7fffd9b7d6c0 (LWP 27691) "pw-ardour"):
#0  0x00007ffff312a072 in epoll_wait (epfd=13, events=0x7fffd9b7c8c0, maxevents=32, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007fffe10a3138 in ?? () from /usr/lib/x86_64-linux-gnu/spa-0.2/support/libspa-support.so
#2  0x00007fffe1094c59 in ?? () from /usr/lib/x86_64-linux-gnu/spa-0.2/support/libspa-support.so
#3  0x00007fffdbfb1c67 in ?? () from /lib/x86_64-linux-gnu/libpipewire-0.3.so.0
#4  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#5  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 20 (Thread 0x7fffda5296c0 (LWP 27674) "gmain"):
#0  0x00007ffff311b4fd in __GI___poll (fds=0x555557a47b40, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff42fdc8e in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff42fdd9f in g_main_context_iteration () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff42fddf1 in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#4  0x00007ffff432ac35 in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#5  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#6  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 10 (Thread 0x7fffdbbff6c0 (LWP 27658) "DeviceList"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff434d8ff in g_cond_wait () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff6be9ed7 in ARDOUR::AudioEngine::do_devicelist_update (this=0x555557e1af60) at ../libs/ardour/audioengine.cc:757
#3  0x00007ffff6bf6e2e in std::__invoke_impl<void, void (ARDOUR::AudioEngine::*&)(), ARDOUR::AudioEngine*&> (__f=@0x555557e3e270: (void (ARDOUR::AudioEngine::*)(class ARDOUR::AudioEngine * const)) 0x7ffff6be9d7c <ARDOUR::AudioEngine::do_devicelist_update()>, __t=@0x555557e3e280: 0x555557e1af60) at /usr/include/c++/10/bits/invoke.h:73
#4  0x00007ffff6bf6cd5 in std::__invoke<void (ARDOUR::AudioEngine::*&)(), ARDOUR::AudioEngine*&> (__fn=@0x555557e3e270: (void (ARDOUR::AudioEngine::*)(class ARDOUR::AudioEngine * const)) 0x7ffff6be9d7c <ARDOUR::AudioEngine::do_devicelist_update()>) at /usr/include/c++/10/bits/invoke.h:95
#5  0x00007ffff6bf6af4 in std::_Bind<void (ARDOUR::AudioEngine::*(ARDOUR::AudioEngine*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x555557e3e270, __args=...) at /usr/include/c++/10/functional:416
#6  0x00007ffff6bf654c in std::_Bind<void (ARDOUR::AudioEngine::*(ARDOUR::AudioEngine*))()>::operator()<, void>() (this=0x555557e3e270) at /usr/include/c++/10/functional:499
#7  0x00007ffff6bf5d9c in std::__invoke_impl<void, std::_Bind<void (ARDOUR::AudioEngine::*(ARDOUR::AudioEngine*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::AudioEngine::*(ARDOUR::AudioEngine*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#8  0x00007ffff6bf4c76 in std::__invoke_r<void, std::_Bind<void (ARDOUR::AudioEngine::*(ARDOUR::AudioEngine*))()>&>(std::_Bind<void (ARDOUR::AudioEngine::*(ARDOUR::AudioEngine*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#9  0x00007ffff6bf347b in std::_Function_handler<void (), std::_Bind<void (ARDOUR::AudioEngine::*(ARDOUR::AudioEngine*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#10 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x555557e3e698) at /usr/include/c++/10/bits/std_function.h:622
#11 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x555557e3e670) at ../libs/pbd/pthread_utils.cc:586
#12 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#13 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 9 (Thread 0x7fffe0c5c6c0 (LWP 27657) "EngineWatchdog"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff434d8ff in g_cond_wait () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff6be9c6b in ARDOUR::AudioEngine::do_reset_backend (this=0x555557e1af60) at ../libs/ardour/audioengine.cc:722
#3  0x00007ffff6bf6e2e in std::__invoke_impl<void, void (ARDOUR::AudioEngine::*&)(), ARDOUR::AudioEngine*&> (__f=@0x555557e3ba40: (void (ARDOUR::AudioEngine::*)(ARDOUR::AudioEngine * const)) 0x7ffff6be98ac <ARDOUR::AudioEngine::do_reset_backend()>, __t=@0x555557e3ba50: 0x555557e1af60) at /usr/include/c++/10/bits/invoke.h:73
#4  0x00007ffff6bf6cd5 in std::__invoke<void (ARDOUR::AudioEngine::*&)(), ARDOUR::AudioEngine*&> (__fn=@0x555557e3ba40: (void (ARDOUR::AudioEngine::*)(ARDOUR::AudioEngine * const)) 0x7ffff6be98ac <ARDOUR::AudioEngine::do_reset_backend()>) at /usr/include/c++/10/bits/invoke.h:95
#5  0x00007ffff6bf6af4 in std::_Bind<void (ARDOUR::AudioEngine::*(ARDOUR::AudioEngine*))()>::__call<void, , 0ul>(std::tuple<>&&, std::_Index_tuple<0ul>) (this=0x555557e3ba40, __args=...) at /usr/include/c++/10/functional:416
#6  0x00007ffff6bf654c in std::_Bind<void (ARDOUR::AudioEngine::*(ARDOUR::AudioEngine*))()>::operator()<, void>() (this=0x555557e3ba40) at /usr/include/c++/10/functional:499
--Type <RET> for more, q to quit, c to continue without paging--
#7  0x00007ffff6bf5d9c in std::__invoke_impl<void, std::_Bind<void (ARDOUR::AudioEngine::*(ARDOUR::AudioEngine*))()>&>(std::__invoke_other, std::_Bind<void (ARDOUR::AudioEngine::*(ARDOUR::AudioEngine*))()>&) (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#8  0x00007ffff6bf4c76 in std::__invoke_r<void, std::_Bind<void (ARDOUR::AudioEngine::*(ARDOUR::AudioEngine*))()>&>(std::_Bind<void (ARDOUR::AudioEngine::*(ARDOUR::AudioEngine*))()>&) (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#9  0x00007ffff6bf347b in std::_Function_handler<void (), std::_Bind<void (ARDOUR::AudioEngine::*(ARDOUR::AudioEngine*))()> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#10 0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x555557e3b928) at /usr/include/c++/10/bits/std_function.h:622
#11 0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x555557e3b900) at ../libs/pbd/pthread_utils.cc:586
#12 0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#13 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 6 (Thread 0x7fffe37fe6c0 (LWP 27651) "Analyzer"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff434d8ff in g_cond_wait () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff6bb21fa in ARDOUR::Analyser::work () at ../libs/ardour/analyser.cc:95
#3  0x00005555567ef0a7 in sigc::pointer_functor0<void>::operator() (this=0x5555577d4458) at ../../gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x00007ffff6bb557e in std::__invoke_impl<void, sigc::pointer_functor0<void>&> (__f=...) at /usr/include/c++/10/bits/invoke.h:60
#5  0x00007ffff6bb4e11 in std::__invoke_r<void, sigc::pointer_functor0<void>&> (__fn=...) at /usr/include/c++/10/bits/invoke.h:110
#6  0x00007ffff6bb410c in std::_Function_handler<void (), sigc::pointer_functor0<void> >::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#7  0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x5555577d4458) at /usr/include/c++/10/bits/std_function.h:622
#8  0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x5555577d4430) at ../libs/pbd/pthread_utils.cc:586
#9  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#10 0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 5 (Thread 0x7fffe3fff6c0 (LWP 27650) "PeakFileBuilder"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff434d8ff in g_cond_wait () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff72c8e3f in peak_thread_work () at ../libs/ardour/source_factory.cc:73
#3  0x00007ffff7f221e1 in std::__invoke_impl<void, void (*&)()> (__f=@0x55555776faf8: 0x7ffff72c8d91 <peak_thread_work()>) at /usr/include/c++/10/bits/invoke.h:60
#4  0x00007ffff7f216ed in std::__invoke_r<void, void (*&)()> (__fn=@0x55555776faf8: 0x7ffff72c8d91 <peak_thread_work()>) at /usr/include/c++/10/bits/invoke.h:110
#5  0x00007ffff7f2068f in std::_Function_handler<void (), void (*)()>::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#6  0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x55555776faf8) at /usr/include/c++/10/bits/std_function.h:622
#7  0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x55555776fad0) at ../libs/pbd/pthread_utils.cc:586
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 4 (Thread 0x7ffff0c716c0 (LWP 27649) "PeakFileBuilder"):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff434d8ff in g_cond_wait () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff72c8e3f in peak_thread_work () at ../libs/ardour/source_factory.cc:73
#3  0x00007ffff7f221e1 in std::__invoke_impl<void, void (*&)()> (__f=@0x5555577768f8: 0x7ffff72c8d91 <peak_thread_work()>) at /usr/include/c++/10/bits/invoke.h:60
#4  0x00007ffff7f216ed in std::__invoke_r<void, void (*&)()> (__fn=@0x5555577768f8: 0x7ffff72c8d91 <peak_thread_work()>) at /usr/include/c++/10/bits/invoke.h:110
#5  0x00007ffff7f2068f in std::_Function_handler<void (), void (*)()>::_M_invoke(std::_Any_data const&) (__functor=...) at /usr/include/c++/10/bits/std_function.h:291
#6  0x0000555555d9c5c6 in std::function<void ()>::operator()() const (this=0x5555577768f8) at /usr/include/c++/10/bits/std_function.h:622
#7  0x00007ffff4bbfedd in PBD::Thread::_run (arg=0x5555577768d0) at ../libs/pbd/pthread_utils.cc:586
#8  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 3 (Thread 0x7ffff14726c0 (LWP 27648) "LXVSTEventLoop"):
#0  0x00007ffff30ecadf in __GI___clock_nanosleep (clock_id=clock_id@entry=0, flags=flags@entry=0, req=0x7ffff1471a70, rem=0x7ffff1471a80) at ../sysdeps/unix/sysv/linux/clock_nanosleep.c:78
#1  0x00007ffff30f9a27 in __GI___nanosleep (req=<optimized out>, rem=<optimized out>) at ../sysdeps/unix/sysv/linux/nanosleep.c:25
#2  0x00007ffff432c42f in g_usleep () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#3  0x0000555556d75808 in gui_event_loop () at ../gtk2_ardour/linux_vst_gui_support.cc:463
#4  0x00007ffff4bbec48 in fake_thread_start (arg=0x555557772dd0) at ../libs/pbd/pthread_utils.cc:191
#5  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#6  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 2 (Thread 0x7ffff15fe900 (LWP 27647) "TriggerBox Work"):
#0  0x00007ffff311b4fd in __GI___poll (fds=0x7ffff15fdcf4, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff4b71974 in CrossThreadChannel::poll_for_request (this=0x5555576cdf80) at ../libs/pbd/crossthread.posix.cc:108
#2  0x00007ffff4b719e5 in CrossThreadChannel::receive (this=0x5555576cdf80, msg=@0x7ffff15fdd5f: 0 '\000', wait=true) at ../libs/pbd/crossthread.posix.cc:133
#3  0x00007ffff734bc51 in ARDOUR::TriggerBoxThread::thread_work (this=0x5555576cdf50) at ../libs/ardour/triggerbox.cc:5717
#4  0x00007ffff734bbf5 in ARDOUR::TriggerBoxThread::_thread_work (arg=0x5555576cdf50) at ../libs/ardour/triggerbox.cc:5707
#5  0x00007ffff4bbec48 in fake_thread_start (arg=0x5555576cd3c0) at ../libs/pbd/pthread_utils.cc:191
#6  0x00007ffff309caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#7  0x00007ffff3129c6c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78


Thread 1 (Thread 0x7ffff1cff900 (LWP 27633) "ArdourGUI"):
#0  clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:62
#1  0x00007ffff3129b75 in __clone3_internal (arg=0x7ffe467fc6c0, func=0x7ffff309c720 <start_thread>, cl_args=0x7fffffff8000) at ../sysdeps/unix/sysv/linux/clone-internal.c:82
#2  __GI___clone_internal (cl_args=cl_args@entry=0x7fffffff8000, func=func@entry=0x7ffff309c720 <start_thread>, arg=arg@entry=0x7ffe467fc6c0) at ../sysdeps/unix/sysv/linux/clone-internal.c:100
#3  0x00007ffff309c550 in create_thread (pd=pd@entry=0x7ffe467fc6c0, attr=attr@entry=0x7fffffff8210, stopped_start=stopped_start@entry=0x7fffffff8106, stackaddr=stackaddr@entry=0x7ffe45ffc000, stacksize=<optimized out>, thread_ran=thread_ran@entry=0x7fffffff8107) at ./nptl/pthread_create.c:297
#4  0x00007ffff309d1a5 in __pthread_create_2_1 (newthread=<optimized out>, attr=<optimized out>, start_routine=<optimized out>, arg=<optimized out>) at ./nptl/pthread_create.c:836
#5  0x00007ffff4bbfcef in PBD::Thread::Thread(std::function<void ()> const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) (this=0x55555f355ed0, slot=..., name="AutomationWatch") at ../libs/pbd/pthread_utils.cc:565
#6  0x00007ffff4bbfb77 in PBD::Thread::create(std::function<void ()> const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) (slot=..., name="AutomationWatch") at ../libs/pbd/pthread_utils.cc:538
#7  0x00007ffff6c63102 in ARDOUR::AutomationWatch::set_session (this=0x5555655dc000, s=0x55555a874c20) at ../libs/ardour/automation_watch.cc:226
#8  0x0000555555e13790 in ARDOUR_UI::set_session (this=0x555557e70570, s=0x55555a874c20) at ../gtk2_ardour/ardour_ui_dialogs.cc:156
#9  0x0000555555e4fece in ARDOUR_UI::load_session_stage_two (this=0x555557e70570, path="/home/martin/avworkspace/251221_disco4", snap_name="251221_disco4", mix_template="") at ../gtk2_ardour/ardour_ui_session.cc:623
#10 0x0000555555e4f3d2 in ARDOUR_UI::load_session (this=0x555557e70570, path="/home/martin/avworkspace/251221_disco4", snap_name="251221_disco4", mix_template="") at ../gtk2_ardour/ardour_ui_session.cc:382
#11 0x0000555555e62971 in ARDOUR_UI::load_session_from_startup_fsm (this=0x555557e70570) at ../gtk2_ardour/ardour_ui_startup.cc:702
#12 0x0000555555e618e2 in ARDOUR_UI::sfsm_response (this=0x555557e70570, r=StartupFSM::LoadSession) at ../gtk2_ardour/ardour_ui_startup.cc:555
#13 0x0000555555e663ba in sigc::bound_mem_functor1<void, ARDOUR_UI, StartupFSM::Result>::operator() (this=0x55555795da88, _A_a1=@0x7fffffffa50c: StartupFSM::LoadSession) at ../../gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:2066
#14 0x0000555555e65feb in sigc::adaptor_functor<sigc::bound_mem_functor1<void, ARDOUR_UI, StartupFSM::Result> >::operator()<StartupFSM::Result const&> (this=0x55555795da80, _A_arg1=@0x7fffffffa50c: StartupFSM::LoadSession) at ../../gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:89
#15 0x0000555555e658ec in sigc::internal::slot_call<sigc::bound_mem_functor1<void, ARDOUR_UI, StartupFSM::Result>, void, StartupFSM::Result>::call_it (rep=0x55555795da50, a_#0=@0x7fffffffa50c: StartupFSM::LoadSession) at ../../gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:451
#16 0x0000555556b242dc in sigc::internal::signal_emit1<void, StartupFSM::Result, sigc::nil>::emit (impl=0x55555795dae0, _A_a1=@0x7fffffffa50c: StartupFSM::LoadSession) at ../../gtk/inst/include/sigc++-2.0/sigc++/signal.h:1041
#17 0x0000555556b23985 in sigc::signal1<void, StartupFSM::Result, sigc::nil>::emit (this=0x555557976620, _A_a1=@0x7fffffffa50c: StartupFSM::LoadSession) at ../../gtk/inst/include/sigc++-2.0/sigc++/signal.h:2951
#18 0x0000555556b23105 in sigc::signal1<void, StartupFSM::Result, sigc::nil>::operator() (this=0x555557976620, _A_a1=@0x7fffffffa50c: StartupFSM::LoadSession) at ../../gtk/inst/include/sigc++-2.0/sigc++/signal.h:2967
#19 0x0000555556b1e577 in StartupFSM::dialog_response_handler (this=0x5555579764d0, response=-5, dialog_id=StartupFSM::PluginDialog) at ../gtk2_ardour/startup_fsm.cc:337
#20 0x0000555556b25878 in sigc::bound_mem_functor2<void, StartupFSM, int, StartupFSM::DialogID>::operator() (this=0x555557c65fd0, _A_a1=@0x7fffffffa664: -5, _A_a2=@0x555557c65ff0: StartupFSM::PluginDialog) at ../../gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:2143
#21 0x0000555556b252fb in sigc::adaptor_functor<sigc::bound_mem_functor2<void, StartupFSM, int, StartupFSM::DialogID> >::operator()<int const&, StartupFSM::DialogID&> (this=0x555557c65fc8, _A_arg1=@0x7fffffffa664: -5, _A_arg2=@0x555557c65ff0: StartupFSM::PluginDialog) at ../../gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:108
#22 0x0000555556b24dd5 in sigc::bind_functor<-1, sigc::bound_mem_functor2<void, StartupFSM, int, StartupFSM::DialogID>, StartupFSM::DialogID, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>::operator()<int const&> (this=0x555557c65fc0, _A_arg1=@0x7fffffffa664: -5) at ../../gtk/inst/include/sigc++-2.0/sigc++/adaptors/bind.h:1136
#23 0x0000555556b24c77 in sigc::internal::slot_call1<sigc::bind_functor<-1, sigc::bound_mem_functor2<void, StartupFSM, int, StartupFSM::DialogID>, StartupFSM::DialogID, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>, void, int>::call_it (rep=0x555557c65f90, a_1=@0x7fffffffa664: -5) at ../../gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:170
#24 0x00007ffff46c4338 in sigc::slot1<void, int>::operator() (this=0x555558366bc8, _A_a1=@0x7fffffffa664: -5) at ../../gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:665
#25 0x00007ffff46c34ae in (anonymous namespace)::Dialog_signal_response_callback (self=0x55555805f410, p0=-5, data=0x555558366bc0) at ../libs/tk/ytkmm/dialog.cc:85
#26 0x00007ffff3d347d2 in g_closure_invoke () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#27 0x00007ffff3d4624a in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
--Type <RET> for more, q to quit, c to continue without paging--
#28 0x00007ffff3d504ce in g_signal_emit_valist () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#29 0x00007ffff3d50b22 in g_signal_emit () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#30 0x00007ffff3ecd6a2 in IA__gtk_dialog_response (dialog=0x55555805f410, response_id=-5) at ../libs/tk/ytk/gtkdialog.c:932
#31 0x00007ffff46c4017 in Gtk::Dialog::response (this=0x555557c5f620, response_id=-5) at ../libs/tk/ytkmm/dialog.cc:306
#32 0x0000555556b1fc07 in StartupFSM::engine_running (this=0x5555579764d0) at ../gtk2_ardour/startup_fsm.cc:567
#33 0x0000555556b1f980 in StartupFSM::start_audio_midi_setup (this=0x5555579764d0) at ../gtk2_ardour/startup_fsm.cc:541
#34 0x0000555556b1e3a3 in StartupFSM::dialog_response_handler (this=0x5555579764d0, response=-3, dialog_id=StartupFSM::NewSessionDialog) at ../gtk2_ardour/startup_fsm.cc:274
#35 0x0000555556b25878 in sigc::bound_mem_functor2<void, StartupFSM, int, StartupFSM::DialogID>::operator() (this=0x555557b0b780, _A_a1=@0x7fffffffb194: -3, _A_a2=@0x555557b0b7a0: StartupFSM::NewSessionDialog) at ../../gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:2143
#36 0x0000555556b252fb in sigc::adaptor_functor<sigc::bound_mem_functor2<void, StartupFSM, int, StartupFSM::DialogID> >::operator()<int const&, StartupFSM::DialogID&> (this=0x555557b0b778, _A_arg1=@0x7fffffffb194: -3, _A_arg2=@0x555557b0b7a0: StartupFSM::NewSessionDialog) at ../../gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:108
#37 0x0000555556b24dd5 in sigc::bind_functor<-1, sigc::bound_mem_functor2<void, StartupFSM, int, StartupFSM::DialogID>, StartupFSM::DialogID, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>::operator()<int const&> (this=0x555557b0b770, _A_arg1=@0x7fffffffb194: -3) at ../../gtk/inst/include/sigc++-2.0/sigc++/adaptors/bind.h:1136
#38 0x0000555556b24c77 in sigc::internal::slot_call1<sigc::bind_functor<-1, sigc::bound_mem_functor2<void, StartupFSM, int, StartupFSM::DialogID>, StartupFSM::DialogID, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil, sigc::nil>, void, int>::call_it (rep=0x555557b0b740, a_1=@0x7fffffffb194: -3) at ../../gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:170
#39 0x00007ffff46c4338 in sigc::slot1<void, int>::operator() (this=0x555557b7b208, _A_a1=@0x7fffffffb194: -3) at ../../gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:665
#40 0x00007ffff46c34ae in (anonymous namespace)::Dialog_signal_response_callback (self=0x55555805f190, p0=-3, data=0x555557b7b200) at ../libs/tk/ytkmm/dialog.cc:85
#41 0x00007ffff3d347d2 in g_closure_invoke () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#42 0x00007ffff3d4624a in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#43 0x00007ffff3d504ce in g_signal_emit_valist () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#44 0x00007ffff3d50b22 in g_signal_emit () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#45 0x00007ffff3ecd6a2 in IA__gtk_dialog_response (dialog=0x55555805f190, response_id=-3) at ../libs/tk/ytk/gtkdialog.c:932
#46 0x00007ffff46c4017 in Gtk::Dialog::response (this=0x555557a2deb0, response_id=-3) at ../libs/tk/ytkmm/dialog.cc:306
#47 0x0000555556a77e43 in SessionDialog::recent_row_activated (this=0x555557a2deb0) at ../gtk2_ardour/session_dialog.cc:1188
#48 0x0000555556a7e3f4 in sigc::bound_mem_functor2<void, SessionDialog, Gtk::TreePath const&, Gtk::TreeViewColumn*>::operator() (this=0x555557a36fd8, _A_a1=..., _A_a2=@0x7fffffffb770: 0x555557b27660) at ../../gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:2143
#49 0x0000555556a7ca7f in sigc::adaptor_functor<sigc::bound_mem_functor2<void, SessionDialog, Gtk::TreePath const&, Gtk::TreeViewColumn*> >::operator()<Gtk::TreePath const&, Gtk::TreeViewColumn* const&> (this=0x555557a36fd0, _A_arg1=..., _A_arg2=@0x7fffffffb770: 0x555557b27660) at ../../gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:108
#50 0x0000555556a7b79c in sigc::internal::slot_call2<sigc::bound_mem_functor2<void, SessionDialog, Gtk::TreePath const&, Gtk::TreeViewColumn*>, void, Gtk::TreePath const&, Gtk::TreeViewColumn*>::call_it (rep=0x555557a36fa0, a_1=..., a_2=@0x7fffffffb770: 0x555557b27660) at ../../gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:206
#51 0x00007ffff4772303 in sigc::slot2<void, Gtk::TreePath const&, Gtk::TreeViewColumn*>::operator() (this=0x555557a37c08, _A_a1=..., _A_a2=@0x7fffffffb770: 0x555557b27660) at ../../gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:798
#52 0x00007ffff476d571 in (anonymous namespace)::TreeView_signal_row_activated_callback (self=0x555557a384a0, p0=0x555557a96620, p1=0x55555793c0c0, data=0x555557a37c00) at ../libs/tk/ytkmm/treeview.cc:550
#53 0x00007ffff3f74c7a in _gtk_marshal_VOID__BOXED_OBJECT (closure=0x555557a2bd10, return_value=0x0, n_param_values=3, param_values=0x7fffffffb9d0, invocation_hint=0x7fffffffb970, marshal_data=0x0) at ../libs/tk/ytk/gtkmarshalers.c:1338
#54 0x00007ffff3d347d2 in g_closure_invoke () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#55 0x00007ffff3d4624a in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#56 0x00007ffff3d504ce in g_signal_emit_valist () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#57 0x00007ffff3d50b22 in g_signal_emit () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#58 0x00007ffff40c6107 in IA__gtk_tree_view_row_activated (tree_view=0x555557a384a0, path=0x555557a96590, column=0x55555793c0c0) at ../libs/tk/ytk/gtktreeview.c:11818
#59 0x00007ffff40b0935 in gtk_tree_view_button_press (widget=0x555557a384a0, event=0x55555853a910) at ../libs/tk/ytk/gtktreeview.c:2887
#60 0x00007ffff47805bf in Gtk::Widget_Class::button_press_event_callback (self=0x555557a384a0, p0=0x55555853a910) at ../libs/tk/ytkmm/widget.cc:4307
#61 0x00007ffff3f728bf in _gtk_marshal_BOOLEAN__BOXED (closure=0x555557eeb9e0, return_value=0x7fffffffbfc0, n_param_values=2, param_values=0x7fffffffc070, invocation_hint=0x7fffffffc010, marshal_data=0x7ffff47804d4 <Gtk::Widget_Class::button_press_event_callback(_GtkWidget*, _GdkEventButton*)>) at ../libs/tk/ytk/gtkmarshalers.c:84
#62 0x00007ffff3d347d2 in g_closure_invoke () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#63 0x00007ffff3d45e29 in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#64 0x00007ffff3d4fbb5 in g_signal_emit_valist () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#65 0x00007ffff3d50b22 in g_signal_emit () from /opt/Ardour-9.0.rc2-dbg/lib/libgobject-2.0.so.0
#66 0x00007ffff40ea24a in gtk_widget_event_internal (widget=0x555557a384a0, event=0x55555853a910) at ../libs/tk/ytk/gtkwidget.c:5058
#67 0x00007ffff40e9d4c in IA__gtk_widget_event (widget=0x555557a384a0, event=0x55555853a910) at ../libs/tk/ytk/gtkwidget.c:4846
#68 0x00007ffff3f70926 in IA__gtk_propagate_event (widget=0x555557a384a0, event=0x55555853a910) at ../libs/tk/ytk/gtkmain.c:2457
#69 0x00007ffff3f6f221 in IA__gtk_main_do_event (event=0x55555853a910) at ../libs/tk/ytk/gtkmain.c:1607
#70 0x00007ffff4d37198 in gdk_event_dispatch (source=0x555557ea87c0, callback=0x0, user_data=0x0) at ../libs/tk/ydk/x11/gdkevents-x11.c:2541
#71 0x00007ffff42fda73 in g_main_context_dispatch () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#72 0x00007ffff42fdcf8 in ?? () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#73 0x00007ffff42fe023 in g_main_loop_run () from /opt/Ardour-9.0.rc2-dbg/lib/libglib-2.0.so.0
#74 0x00007ffff3f6e949 in IA__gtk_main () at ../libs/tk/ytk/gtkmain.c:1213
#75 0x00007ffff46f643d in Gtk::Main::run_impl (this=0x555557e79c10) at ../libs/tk/ytkmm/main.cc:537
#76 0x00007ffff46f6245 in Gtk::Main::run () at ../libs/tk/ytkmm/main.cc:480
#77 0x00007ffff51d0af8 in Gtkmm2ext::UI::run (this=0x555557e70570, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:319
#78 0x000055555648fc74 in main (argc=1, argv=0x7fffffffcba8) at ../gtk2_ardour/main.cc:467
(gdb) 
(gdb)