This gdb output and threads are for a half-crash of Ardour 6.rc.1.107.  I opened up a plugin on a channel, then attempted to PFL that channel.  Once the PFL button was pressed on the channel, audio stopped, meters frose in their current state.


steve@steve-comp:/opt/Ardour-6.0.rc1.107-dbg/bin$ ./ardour6 --gdb
GNU gdb (Ubuntu 8.1-0ubuntu3.2) 8.1.0.20180409-git
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Reading symbols from /opt/Ardour-6.0.rc1.107-dbg/bin/ardour-6.0.rc1.107...done.
(gdb) run
Starting program: /opt/Ardour-6.0.rc1.107-dbg/bin/ardour-6.0.rc1.107 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
bind txt domain [gtk2_ardour6] to /opt/Ardour-6.0.rc1.107-dbg/share/locale
Ardour6.0.rc1.107 (built using 6.0-rc1-107-g3785cbbf03 and GCC version 6.3.0 20170516)
Ardour: [INFO]: Your system is configured to limit Ardour to 4096 open files
Ardour: [INFO]: Loading system configuration file /opt/Ardour-6.0.rc1.107-dbg/etc/system_config
Ardour: [INFO]: Loading user configuration file /home/steve/.config/ardour6/config
[New Thread 0x7fffe68a9700 (LWP 2616)]
Ardour: [INFO]: CPU vendor: GenuineIntel
Ardour: [INFO]: AVX-capable processor
Ardour: [INFO]: CPU brand:        Intel(R) Core(TM) i3-3217U CPU @ 1.80GHz
Ardour: [INFO]: Using SSE optimized routines
[New Thread 0x7fffe60a8700 (LWP 2617)]
[New Thread 0x7fffe58a7700 (LWP 2618)]
[New Thread 0x7fffe50a6700 (LWP 2619)]
Ardour: [INFO]: Loading plugin meta data file /opt/Ardour-6.0.rc1.107-dbg/share/plugin_metadata/plugin_tags
[New Thread 0x7fffd5745700 (LWP 2620)]
[Thread 0x7fffd5745700 (LWP 2620) exited]
[New Thread 0x7fffd5745700 (LWP 2621)]
[New Thread 0x7fffcbb74700 (LWP 2622)]
*** WEAK-JACK: initializing
*** WEAK-JACK: OK. (0)
[New Thread 0x7fffcd49a700 (LWP 2623)]
Cannot xinstall SIGPIPE error handler
Ardour: [INFO]: Loading default ui configuration file /opt/Ardour-6.0.rc1.107-dbg/etc/default_ui_config
Ardour: [INFO]: Loading 449 MIDI patches from /opt/Ardour-6.0.rc1.107-dbg/share/patchfiles
Ardour: [INFO]: Loading user ui configuration file /home/steve/.config/ardour6/ui_config
Color shuttle bg not found
Color play head not found
Ardour: [INFO]: Loading color file /opt/Ardour-6.0.rc1.107-dbg/share/themes/dark-ardour.colors
Ardour: [INFO]: Loading ui configuration file /opt/Ardour-6.0.rc1.107-dbg/etc/clearlooks.rc
Ardour: [INFO]: Loading bindings from /opt/Ardour-6.0.rc1.107-dbg/etc/ardour.keys
Loading ui configuration file /opt/Ardour-6.0.rc1.107-dbg/etc/clearlooks.rc
[New Thread 0x7fffcc9ad700 (LWP 2624)]
[New Thread 0x7fffcc92c700 (LWP 2625)]
[Thread 0x7fffcc92c700 (LWP 2625) exited]
[New Thread 0x7fffcc92c700 (LWP 2626)]
[New Thread 0x7fffcad56700 (LWP 2627)]
[New Thread 0x7fffca555700 (LWP 2628)]
[New Thread 0x7fffc9d54700 (LWP 2629)]
[New Thread 0x7fffc9553700 (LWP 2630)]
[New Thread 0x7fffc8d52700 (LWP 2631)]
Found nothing along /home/steve/.config/ardour6/templates:/opt/Ardour-6.0.rc1.107-dbg/share/templates
pingback: No Error
[Thread 0x7fffcc9ad700 (LWP 2624) exited]
[Thread 0x7fffc9d54700 (LWP 2629) exited]
[Thread 0x7fffc8d52700 (LWP 2631) exited]
[Thread 0x7fffc9553700 (LWP 2630) exited]
[Thread 0x7fffca555700 (LWP 2628) exited]
[Thread 0x7fffcd49a700 (LWP 2623) exited]
[New Thread 0x7fffc9553700 (LWP 2633)]
playback :
  nchan  : 2
  fsamp  : 44100
  fsize  : 4096
  nfrag  : 3
  format : S32_LE
capture  :
  nchan  : 2
  fsamp  : 44100
  fsize  : 4096
  nfrag  : 2
  format : S32_LE
synced
[New Thread 0x7ffff7e04700 (LWP 2634)]
[New Thread 0x7fffc8131700 (LWP 2635)]
[New Thread 0x7fffc8128700 (LWP 2636)]
[New Thread 0x7fffc8d52700 (LWP 2637)]
Scanning folders for bundled LV2s: /opt/Ardour-6.0.rc1.107-dbg/lib/LV2
error: /usr/lib/lv2/lsp-plugins.lv2/spectrum_analyzer_x1.ttl:278:2: missing ';' or '.'
error: /usr/lib/lv2/lsp-plugins.lv2/spectrum_analyzer_x1.ttl:278:2: expected `]', not `l'
lilv_world_load_file(): error: Error loading file `file:///usr/lib/lv2/lsp-plugins.lv2/spectrum_analyzer_x1.ttl'
[New Thread 0x7fffca555700 (LWP 2638)]
[New Thread 0x7fffc9d54700 (LWP 2639)]
[New Thread 0x7fffa3de9700 (LWP 2643)]
[Thread 0x7fffa3de9700 (LWP 2643) exited]
[Thread 0x7fffc9d54700 (LWP 2639) exited]
[Thread 0x7fffcad56700 (LWP 2627) exited]
[New Thread 0x7fffa3de9700 (LWP 2645)]
[Thread 0x7fffa3de9700 (LWP 2645) exited]
Set cursor set to default
 loading from /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix as Dragged+Under_Chelsea+Steve_Erdeman_Mix templ  is_new 0 bp 0
[New Thread 0x7fffc8012700 (LWP 2646)]
[New Thread 0x7fffc8009700 (LWP 2647)]
[New Thread 0x7fffa32e7700 (LWP 2648)]
[New Thread 0x7fffa32de700 (LWP 2649)]
[New Thread 0x7fffa32bd700 (LWP 2650)]
[New Thread 0x7fffa329c700 (LWP 2651)]
[New Thread 0x7fffa327b700 (LWP 2652)]
[New Thread 0x7fffa3de9700 (LWP 2653)]
[New Thread 0x7fffcad56700 (LWP 2654)]
[New Thread 0x7fffc9d54700 (LWP 2655)]
[New Thread 0x7fff7e6c3700 (LWP 2656)]
[New Thread 0x7fff7dec2700 (LWP 2657)]
[New Thread 0x7fff7d06e700 (LWP 2658)]
[New Thread 0x7fff7c86d700 (LWP 2659)]
[New Thread 0x7fff67fff700 (LWP 2660)]
[New Thread 0x7fff677fe700 (LWP 2661)]
locate took 240171 usecs for 76 tracks = 3160 per track
locate took 366062 usecs for 76 tracks = 4817 per track
[Thread 0x7fffca555700 (LWP 2638) exited]
[New Thread 0x7fffca555700 (LWP 2662)]
[New Thread 0x7fff66dfd700 (LWP 2663)]
[New Thread 0x7fff665fc700 (LWP 2664)]
locate took 367796 usecs for 76 tracks = 4839 per track
actually writing state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.tmp
renaming state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.pending
saved state in 474.7 ms
actually writing state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.tmp
renaming state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.pending
saved state in 493.3 ms
actually writing state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.tmp
renaming state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.pending
saved state in 502.9 ms
actually writing state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.tmp
renaming state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.pending
saved state in 536.1 ms
actually writing state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.tmp
renaming state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.pending
saved state in 467.9 ms
actually writing state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.tmp
renaming state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.pending
saved state in 467.3 ms
actually writing state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.tmp
renaming state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.pending
saved state in 462.7 ms
actually writing state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.tmp
renaming state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.pending
saved state in 458.2 ms
actually writing state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.tmp
renaming state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.pending
saved state in 473.2 ms
actually writing state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.tmp
renaming state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.pending
saved state in 459.6 ms
actually writing state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.tmp
renaming state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.pending
saved state in 476.8 ms
actually writing state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.tmp
renaming state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.pending
saved state in 498.4 ms
actually writing state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.tmp
renaming state to /media/steve/Erdeman/Dragged+Under_Chelsea+Multitracks+32Bit+44.1kHz+155BPM/Dragged+Under_Chelsea+Steve_Erdeman_Mix/Dragged+Under_Chelsea+Steve_Erdeman_Mix.pending
saved state in 472.6 ms
^Ccaught signal - shutting down.

Thread 1 "gui" received signal SIGINT, Interrupt.
0x00007fffebef0bf9 in __GI___poll (fds=0x5555574137d0, nfds=4, timeout=40) at ../sysdeps/unix/sysv/linux/poll.c:29
29	../sysdeps/unix/sysv/linux/poll.c: No such file or directory.
(gdb) thread apply all bt

Thread 45 (Thread 0x7fff665fc700 (LWP 2664)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2fb7e4c in g_cond_wait () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff793e483 in ArdourWaveView::WaveViewDrawRequestQueue::dequeue (this=0x555566fd8ca8, block=true) at ../libs/waveview/wave_view_private.cc:299
#3  0x00007ffff793e7a0 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:368
#4  0x00007ffff793eafe in ArdourWaveView::WaveViewDrawingThread::run (this=0x55556e1c7df0) at ../libs/waveview/wave_view_private.cc:450
#5  0x00007ffff794324a in sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>::operator() (this=0x555557902088)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#6  0x00007ffff7942d74 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread> >::operator() (this=0x555557902080)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff794276d in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>, void>::call_it (rep=0x555557902050)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff3500c4d in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff2f961e5 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#10 0x00007fffeecb96db in start_thread (arg=0x7fff665fc700) at pthread_create.c:463
#11 0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 44 (Thread 0x7fff66dfd700 (LWP 2663)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2fb7e4c in g_cond_wait () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff793e483 in ArdourWaveView::WaveViewDrawRequestQueue::dequeue (this=0x555566fd8ca8, block=true) at ../libs/waveview/wave_view_private.cc:299
#3  0x00007ffff793e7a0 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:368
#4  0x00007ffff793eafe in ArdourWaveView::WaveViewDrawingThread::run (this=0x55556e1d52f0) at ../libs/waveview/wave_view_private.cc:450
#5  0x00007ffff794324a in sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>::operator() (this=0x555559fc6458)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#6  0x00007ffff7942d74 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread> >::operator() (this=0x555559fc6450)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff794276d in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>, void>::call_it (rep=0x555559fc6420)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff3500c4d in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff2f961e5 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#10 0x00007fffeecb96db in start_thread (arg=0x7fff66dfd700) at pthread_create.c:463
#11 0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 43 (Thread 0x7fffca555700 (LWP 2662)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2fb7e4c in g_cond_wait () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff793e483 in ArdourWaveView::WaveViewDrawRequestQueue::dequeue (this=0x555566fd8ca8, block=true) at ../libs/waveview/wave_view_private.cc:299
#3  0x00007ffff793e7a0 in ArdourWaveView::WaveViewThreads::dequeue_draw_request () at ../libs/waveview/wave_view_private.cc:368
---Type <return> to continue, or q <return> to quit---
#4  0x00007ffff793eafe in ArdourWaveView::WaveViewDrawingThread::run (this=0x555575d88bd0) at ../libs/waveview/wave_view_private.cc:450
#5  0x00007ffff794324a in sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>::operator() (this=0x5555575c2fd8)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#6  0x00007ffff7942d74 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread> >::operator() (this=0x5555575c2fd0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff794276d in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ArdourWaveView::WaveViewDrawingThread>, void>::call_it (rep=0x5555575c2fa0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff3500c4d in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff2f961e5 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#10 0x00007fffeecb96db in start_thread (arg=0x7fffca555700) at pthread_create.c:463
#11 0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 42 (Thread 0x7fff677fe700 (LWP 2661)):
#0  0x00007fffeecc3c60 in __GI___nanosleep (requested_time=0x7fff677fdbb0, remaining=0x7fff677fdbc0) at ../sysdeps/unix/sysv/linux/nanosleep.c:28
#1  0x00007ffff2f97a38 in g_usleep () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff697faee in ARDOUR::AutomationWatch::thread (this=0x5555650877a0) at ../libs/ardour/automation_watch.cc:195
#3  0x00007ffff6985331 in boost::_mfi::mf0<void, ARDOUR::AutomationWatch>::operator() (this=0x555575707b80, p=0x5555650877a0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff6984f76 in boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list0> (this=0x555575707b90, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#5  0x00007ffff6984697 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >::operator() (this=0x555575707b80) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#6  0x00007ffff6984618 in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > > >::operator() (this=0x555575707b80) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff6983e76 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AutomationWatch>, boost::_bi::list1<boost::_bi::value<ARDOUR::AutomationWatch*> > >, void>::call_it (rep=0x555575707b50) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff3500c4d in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff2f961e5 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#10 0x00007fffeecb96db in start_thread (arg=0x7fff677fe700) at pthread_create.c:463
#11 0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 41 (Thread 0x7fff67fff700 (LWP 2660)):
#0  0x00007fffeecbf9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5555581b1670) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5555581b1620, cond=0x5555581b1648) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5555581b1648, mutex=0x5555581b1620) at pthread_cond_wait.c:655
#3  0x00007ffff6f70862 in ARDOUR::Session::auto_connect_thread_run (this=0x5555581af820) at ../libs/ardour/session.cc:7002
#4  0x00007ffff6f7059a in ARDOUR::Session::auto_connect_thread (arg=0x5555581af820) at ../libs/ardour/session.cc:6951
#5  0x00007fffeecb96db in start_thread (arg=0x7fff67fff700) at pthread_create.c:463
#6  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

---Type <return> to continue, or q <return> to quit---
Thread 40 (Thread 0x7fff7c86d700 (LWP 2659)):
#0  0x00007fffeecbf9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5555581b1600) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5555581b15b0, cond=0x5555581b15d8) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5555581b15d8, mutex=0x5555581b15b0) at pthread_cond_wait.c:655
#3  0x00007ffff6fe901b in ARDOUR::Session::emit_thread_run (this=0x5555581af820) at ../libs/ardour/session_process.cc:1111
#4  0x00007ffff6fe8fb8 in ARDOUR::Session::emit_thread (arg=0x5555581af820) at ../libs/ardour/session_process.cc:1100
#5  0x00007fffeecb96db in start_thread (arg=0x7fff7c86d700) at pthread_create.c:463
#6  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 39 (Thread 0x7fff7d06e700 (LWP 2658)):
#0  0x00007fffebef0bf9 in __GI___poll (fds=0x7fff9c02e550, nfds=3, timeout=99) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff2f66d66 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff2f670f2 in g_main_loop_run () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff419f736 in BaseUI::main_thread (this=0x55555a6c9e48) at ../libs/pbd/base_ui.cc:98
#4  0x00007ffff41a3858 in sigc::bound_mem_functor0<void, BaseUI>::operator() (this=0x55555913d7c8)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#5  0x00007ffff41a3498 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator() (this=0x55555913d7c0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#6  0x00007ffff41a2ed9 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it (rep=0x55555913d790)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#7  0x00007ffff3500c4d in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglibmm-2.4.so.1
#8  0x00007ffff2f961e5 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#9  0x00007fffeecb96db in start_thread (arg=0x7fff7d06e700) at pthread_create.c:463
#10 0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 38 (Thread 0x7fff7dec2700 (LWP 2657)):
#0  0x00007fffeecc26d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x55556360d830)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x55556360d830, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fffeecc27c8 in __new_sem_wait_slow (sem=0x55556360d830, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007ffff6ab1346 in PBD::Semaphore::wait (this=0x55556360d830) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff70db724 in ARDOUR::Worker::run (this=0x55556360d810) at ../libs/ardour/worker.cc:146
#5  0x00007ffff70dc716 in sigc::bound_mem_functor0<void, ARDOUR::Worker>::operator() (this=0x555563610068)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#6  0x00007ffff70dc65e in sigc::adaptor_functor<sigc::bound_mem_functor0<void, ARDOUR::Worker> >::operator() (this=0x555563610060)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff70dc535 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, ARDOUR::Worker>, void>::call_it (rep=0x555563610030)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff3500c4d in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff2f961e5 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
---Type <return> to continue, or q <return> to quit---
#10 0x00007fffeecb96db in start_thread (arg=0x7fff7dec2700) at pthread_create.c:463
#11 0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 37 (Thread 0x7fff7e6c3700 (LWP 2656)):
#0  0x00007fffebef303f in __GI___select (nfds=98, readfds=0x7fff7e6c2bc0, writefds=0x0, exceptfds=0x0, timeout=0x7fff7e6c2bb0) at ../sysdeps/unix/sysv/linux/select.c:41
#1  0x00007fff7e73a102 in ?? () from /usr/lib/lv2/TAL-Reverb-3.lv2/TAL-Reverb-3.so
#2  0x00007fff7e73a2a5 in ?? () from /usr/lib/lv2/TAL-Reverb-3.lv2/TAL-Reverb-3.so
#3  0x00007fff7e6f8817 in ?? () from /usr/lib/lv2/TAL-Reverb-3.lv2/TAL-Reverb-3.so
#4  0x00007fff7e72d1fc in ?? () from /usr/lib/lv2/TAL-Reverb-3.lv2/TAL-Reverb-3.so
#5  0x00007fff7e72d369 in ?? () from /usr/lib/lv2/TAL-Reverb-3.lv2/TAL-Reverb-3.so
#6  0x00007fffeecb96db in start_thread (arg=0x7fff7e6c3700) at pthread_create.c:463
#7  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 36 (Thread 0x7fffc9d54700 (LWP 2655)):
#0  0x00007fffebef0bf9 in __GI___poll (fds=0x7fff70000bf8, nfds=1, timeout=2000) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fff7efa8e83 in ?? () from /usr/lib/lv2/Luftikus.lv2/Luftikus.so
#2  0x00007fff7ef64b77 in ?? () from /usr/lib/lv2/Luftikus.lv2/Luftikus.so
#3  0x00007fff7ef90b16 in ?? () from /usr/lib/lv2/Luftikus.lv2/Luftikus.so
#4  0x00007fff7ef90ca9 in ?? () from /usr/lib/lv2/Luftikus.lv2/Luftikus.so
#5  0x00007fffeecb96db in start_thread (arg=0x7fffc9d54700) at pthread_create.c:463
#6  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 35 (Thread 0x7fffcad56700 (LWP 2654)):
#0  0x00007fffebef0bf9 in __GI___poll (fds=0x7fff78000bf8, nfds=1, timeout=2000) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fff7fc682a3 in ?? () from /usr/lib/lv2/LUFSMeter.lv2/LUFSMeter.so
#2  0x00007fff7fc20b07 in ?? () from /usr/lib/lv2/LUFSMeter.lv2/LUFSMeter.so
#3  0x00007fff7fc4f876 in ?? () from /usr/lib/lv2/LUFSMeter.lv2/LUFSMeter.so
#4  0x00007fff7fc4fa09 in ?? () from /usr/lib/lv2/LUFSMeter.lv2/LUFSMeter.so
#5  0x00007fffeecb96db in start_thread (arg=0x7fffcad56700) at pthread_create.c:463
#6  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 34 (Thread 0x7fffa3de9700 (LWP 2653)):
#0  0x00007fffebef0bf9 in __GI___poll (fds=0x7fff8417a7d0, nfds=4, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff2f66d66 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff2f670f2 in g_main_loop_run () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff419f736 in BaseUI::main_thread (this=0x555558bec4e0) at ../libs/pbd/base_ui.cc:98
#4  0x00007ffff41a3858 in sigc::bound_mem_functor0<void, BaseUI>::operator() (this=0x55555cbe1cf8)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/mem_fun.h:1787
#5  0x00007ffff41a3498 in sigc::adaptor_functor<sigc::bound_mem_functor0<void, BaseUI> >::operator() (this=0x55555cbe1cf0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
---Type <return> to continue, or q <return> to quit---
#6  0x00007ffff41a2ed9 in sigc::internal::slot_call0<sigc::bound_mem_functor0<void, BaseUI>, void>::call_it (rep=0x55555cbe1cc0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#7  0x00007ffff3500c4d in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglibmm-2.4.so.1
#8  0x00007ffff2f961e5 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#9  0x00007fffeecb96db in start_thread (arg=0x7fffa3de9700) at pthread_create.c:463
#10 0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 33 (Thread 0x7fffa327b700 (LWP 2652)):
#0  0x00007fffebef0bf9 in __GI___poll (fds=0x7fffa327a328, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff41b5598 in CrossThreadChannel::poll_for_request (this=0x55555b584af8) at ../libs/pbd/crossthread.posix.cc:102
#2  0x00007ffff41b5601 in CrossThreadChannel::receive (this=0x55555b584af8, msg=@0x7fffa327a3ef: 0 '\000', wait=true) at ../libs/pbd/crossthread.posix.cc:123
#3  0x00007ffff6995628 in ARDOUR::Butler::thread_work (this=0x55555b584a60) at ../libs/ardour/butler.cc:172
#4  0x00007ffff69953a9 in ARDOUR::Butler::_thread_work (arg=0x55555b584a60) at ../libs/ardour/butler.cc:153
#5  0x00007ffff41d8648 in fake_thread_start (arg=0x55555cbe14d0) at ../libs/pbd/pthread_utils.cc:107
#6  0x00007fffeecb96db in start_thread (arg=0x7fffa327b700) at pthread_create.c:463
#7  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 32 (Thread 0x7fffa329c700 (LWP 2651)):
#0  0x00007fffeecc26d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x55555884f768)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x55555884f768, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fffeecc27c8 in __new_sem_wait_slow (sem=0x55555884f768, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007ffff6ab1346 in PBD::Semaphore::wait (this=0x55555884f768) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6aade72 in ARDOUR::Graph::reached_terminal_node (this=0x55555884f690) at ../libs/ardour/graph.cc:301
#5  0x00007ffff6ab5bff in ARDOUR::GraphNode::finish (this=0x55555d6d1c08, chain=1) at ../libs/ardour/graphnode.cc:73
#6  0x00007ffff6ab13b0 in ARDOUR::GraphNode::run (this=0x55555d6d1c08, chain=1) at ../libs/ardour/ardour/graphnode.h:63
#7  0x00007ffff6aaec50 in ARDOUR::Graph::run_one (this=0x55555884f690) at ../libs/ardour/graph.cc:442
#8  0x00007ffff6aaef9a in ARDOUR::Graph::helper_thread (this=0x55555884f690) at ../libs/ardour/graph.cc:470
#9  0x00007ffff6ab5537 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffa329bcf8, p=0x55555884f690)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#10 0x00007ffff6ab4cec in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (
    this=0x7fffa329bd08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#11 0x00007ffff6ab4149 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (
    this=0x7fffa329bcf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#12 0x00007ffff6ab39ed in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#13 0x0000555555b8b94c in boost::function0<void>::operator() (this=0x7fffa329bcf0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#14 0x00007fffcd519df7 in ARDOUR::AlsaAudioBackend::alsa_process_thread (arg=0x55555873a0d0) at ../libs/backends/alsa/alsa_audiobackend.cc:1118
#15 0x00007fffeecb96db in start_thread (arg=0x7fffa329c700) at pthread_create.c:463
---Type <return> to continue, or q <return> to quit---
#16 0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 31 (Thread 0x7fffa32bd700 (LWP 2650)):
#0  0x00007fffeecc26d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x55555884f740)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x55555884f740, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fffeecc27c8 in __new_sem_wait_slow (sem=0x55555884f740, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007ffff6ab1346 in PBD::Semaphore::wait (this=0x55555884f740) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6aaeae2 in ARDOUR::Graph::run_one (this=0x55555884f690) at ../libs/ardour/graph.cc:426
#5  0x00007ffff6aaef9a in ARDOUR::Graph::helper_thread (this=0x55555884f690) at ../libs/ardour/graph.cc:470
#6  0x00007ffff6ab5537 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffa32bccf8, p=0x55555884f690)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007ffff6ab4cec in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (
    this=0x7fffa32bcd08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#8  0x00007ffff6ab4149 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (
    this=0x7fffa32bccf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#9  0x00007ffff6ab39ed in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#10 0x0000555555b8b94c in boost::function0<void>::operator() (this=0x7fffa32bccf0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#11 0x00007fffcd519df7 in ARDOUR::AlsaAudioBackend::alsa_process_thread (arg=0x55555b65f3b0) at ../libs/backends/alsa/alsa_audiobackend.cc:1118
#12 0x00007fffeecb96db in start_thread (arg=0x7fffa32bd700) at pthread_create.c:463
#13 0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 30 (Thread 0x7fffa32de700 (LWP 2649)):
#0  0x00007fffeecc26d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x55555884f740)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x55555884f740, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fffeecc27c8 in __new_sem_wait_slow (sem=0x55555884f740, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007ffff6ab1346 in PBD::Semaphore::wait (this=0x55555884f740) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6aaeae2 in ARDOUR::Graph::run_one (this=0x55555884f690) at ../libs/ardour/graph.cc:426
#5  0x00007ffff6aaf37c in ARDOUR::Graph::main_thread (this=0x55555884f690) at ../libs/ardour/graph.cc:523
#6  0x00007ffff6ab5537 in boost::_mfi::mf0<void, ARDOUR::Graph>::operator() (this=0x7fffa32ddcf8, p=0x55555884f690)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#7  0x00007ffff6ab4cec in boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> >::operator()<boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list0> (
    this=0x7fffa32ddd08, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#8  0x00007ffff6ab4149 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >::operator() (
    this=0x7fffa32ddcf8) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#9  0x00007ffff6ab39ed in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::Graph>, boost::_bi::list1<boost::_bi::value<ARDOUR::Graph*> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
---Type <return> to continue, or q <return> to quit---
#10 0x0000555555b8b94c in boost::function0<void>::operator() (this=0x7fffa32ddcf0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#11 0x00007fffcd519df7 in ARDOUR::AlsaAudioBackend::alsa_process_thread (arg=0x5555599b4c30) at ../libs/backends/alsa/alsa_audiobackend.cc:1118
#12 0x00007fffeecb96db in start_thread (arg=0x7fffa32de700) at pthread_create.c:463
#13 0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 29 (Thread 0x7fffa32e7700 (LWP 2648)):
#0  0x00007fffeecc26d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x7fffac0040e0)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x7fffac0040e0, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fffeecc27c8 in __new_sem_wait_slow (sem=0x7fffac0040e0, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007ffff6ab1346 in PBD::Semaphore::wait (this=0x7fffac0040e0) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6f33717 in ARDOUR::RTTaskList::run (this=0x7fffac0040b0) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff6f33506 in ARDOUR::RTTaskList::_thread_run (arg=0x7fffac0040b0) at ../libs/ardour/rt_tasklist.cc:67
#6  0x00007fffeecb96db in start_thread (arg=0x7fffa32e7700) at pthread_create.c:463
#7  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 28 (Thread 0x7fffc8009700 (LWP 2647)):
#0  0x00007fffeecc26d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x7fffac0040e0)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x7fffac0040e0, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fffeecc27c8 in __new_sem_wait_slow (sem=0x7fffac0040e0, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007ffff6ab1346 in PBD::Semaphore::wait (this=0x7fffac0040e0) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6f33717 in ARDOUR::RTTaskList::run (this=0x7fffac0040b0) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff6f33506 in ARDOUR::RTTaskList::_thread_run (arg=0x7fffac0040b0) at ../libs/ardour/rt_tasklist.cc:67
#6  0x00007fffeecb96db in start_thread (arg=0x7fffc8009700) at pthread_create.c:463
#7  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 27 (Thread 0x7fffc8012700 (LWP 2646)):
#0  0x00007fffeecc26d6 in futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0, futex_word=0x7fffac0040e0)
    at ../sysdeps/unix/sysv/linux/futex-internal.h:205
#1  do_futex_wait (sem=sem@entry=0x7fffac0040e0, abstime=0x0) at sem_waitcommon.c:111
#2  0x00007fffeecc27c8 in __new_sem_wait_slow (sem=0x7fffac0040e0, abstime=0x0) at sem_waitcommon.c:181
#3  0x00007ffff6ab1346 in PBD::Semaphore::wait (this=0x7fffac0040e0) at ../libs/pbd/pbd/semutils.h:64
#4  0x00007ffff6f33717 in ARDOUR::RTTaskList::run (this=0x7fffac0040b0) at ../libs/ardour/rt_tasklist.cc:112
#5  0x00007ffff6f33506 in ARDOUR::RTTaskList::_thread_run (arg=0x7fffac0040b0) at ../libs/ardour/rt_tasklist.cc:67
#6  0x00007fffeecb96db in start_thread (arg=0x7fffc8012700) at pthread_create.c:463
#7  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7fffc8d52700 (LWP 2637)):
---Type <return> to continue, or q <return> to quit---
#0  0x00007fffebef0bf9 in __GI___poll (fds=0x7fffa40036c0, nfds=1, timeout=200) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fffcd51acca in ARDOUR::AlsaAudioBackend::midi_device_thread (this=0x5555576fa880) at ../libs/backends/alsa/alsa_audiobackend.cc:1318
#2  0x00007fffcd51ab62 in ARDOUR::AlsaAudioBackend::_midi_device_thread (arg=0x5555576fa880) at ../libs/backends/alsa/alsa_audiobackend.cc:1281
#3  0x00007fffeecb96db in start_thread (arg=0x7fffc8d52700) at pthread_create.c:463
#4  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7fffc8128700 (LWP 2636)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2fb7149 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff692a37d in Glib::Threads::Mutex::Lock::acquire (this=0x7fffc81265a0) at /home/ardour/linux-x86_64-v5/gtk/inst/include/glibmm-2.4/glibmm/threads.h:670
#3  0x00007ffff6f6ef50 in ARDOUR::Session::update_latency_compensation (this=0x5555581af820, force_whole_graph=false, called_from_backend=false)
    at ../libs/ardour/session.cc:6703
#4  0x00007ffff6f1c462 in boost::_mfi::mf2<void, ARDOUR::Session, bool, bool>::operator() (this=0x7fff9c029560, p=0x5555581af820, a1=false, a2=false)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:280
#5  0x00007ffff6f1af1e in boost::_bi::list3<boost::_bi::value<ARDOUR::Session*>, boost::_bi::value<bool>, boost::_bi::value<bool> >::operator()<boost::_mfi::mf2<void, ARDOUR::Session, bool, bool>, boost::_bi::list0> (this=0x7fff9c029570, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:398
#6  0x00007ffff6f19797 in boost::_bi::bind_t<void, boost::_mfi::mf2<void, ARDOUR::Session, bool, bool>, boost::_bi::list3<boost::_bi::value<ARDOUR::Session*>, boost::_bi::value<bool>, boost::_bi::value<bool> > >::operator() (this=0x7fff9c029560) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#7  0x00007ffff6f16db6 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf2<void, ARDOUR::Session, bool, bool>, boost::_bi::list3<boost::_bi::value<ARDOUR::Session*>, boost::_bi::value<bool>, boost::_bi::value<bool> > >, void>::invoke (function_obj_ptr=...)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#8  0x0000555555b8b94c in boost::function0<void>::operator() (this=0x7fff9c028ee0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#9  0x0000555555b8b5ec in PBD::Signal0<void, PBD::OptionalLastValue<void> >::operator() (this=0x555563a03828) at libs/pbd/pbd/signals_generated.h:328
#10 0x00007ffff68d30e4 in ARDOUR::Processor::activate (this=0x555563a03430) at ../libs/ardour/ardour/processor.h:103
#11 0x00007ffff6f41e32 in ARDOUR::Send::activate (this=0x555563a03430) at ../libs/ardour/send.cc:129
#12 0x00007ffff6eebc45 in ARDOUR::Route::set_listen (this=0x555562ff7ae0, yn=true) at ../libs/ardour/route.cc:716
#13 0x00007ffff6eebd03 in ARDOUR::Route::solo_control_changed (this=0x555562ff7ae0) at ../libs/ardour/route.cc:731
#14 0x00007ffff6f1bd0e in boost::_mfi::mf2<void, ARDOUR::Route, bool, PBD::Controllable::GroupControlDisposition>::operator() (this=0x7fff9c037158, p=0x555562ff7ae0, 
    a1=true, a2=PBD::Controllable::UseGroup) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:280
#15 0x00007ffff6f1a528 in boost::_bi::list3<boost::_bi::value<ARDOUR::Route*>, boost::arg<1>, boost::arg<2> >::operator()<boost::_mfi::mf2<void, ARDOUR::Route, bool, PBD::Controllable::GroupControlDisposition>, boost::_bi::rrlist2<bool, PBD::Controllable::GroupControlDisposition> > (this=0x7fff9c037168, f=..., a=...)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:398
#16 0x00007ffff6f185d2 in boost::_bi::bind_t<void, boost::_mfi::mf2<void, ARDOUR::Route, bool, PBD::Controllable::GroupControlDisposition>, boost::_bi::list3<boost::_bi::value<ARDOUR::Route*>, boost::arg<1>, boost::arg<2> > >::operator()<bool, PBD::Controllable::GroupControlDisposition> (this=0x7fff9c037158, a1=@0x7fffc8126ac4: true, 
    a2=@0x7fffc8126ac0: PBD::Controllable::UseGroup) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1318
#17 0x00007ffff6f15cd3 in boost::detail::function::void_function_obj_invoker2<boost::_bi::bind_t<void, boost::_mfi::mf2<void, ARDOUR::Route, bool, PBD::Controllable::GroupControlDisposition>, boost::_bi::list3<boost::_bi::value<ARDOUR::Route*>, boost::arg<1>, boost::arg<2> > >, void, bool, PBD::Controllable::GroupControlDisposition>::invoke (function_obj_ptr=..., a0=true, a1=PBD::Controllable::UseGroup) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#18 0x0000555555c9913b in boost::function2<void, bool, PBD::Controllable::GroupControlDisposition>::operator() (this=0x7fff9c037150, a0=true, 
---Type <return> to continue, or q <return> to quit---
    a1=PBD::Controllable::UseGroup) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#19 0x0000555556707557 in PBD::Signal2<void, bool, PBD::Controllable::GroupControlDisposition, PBD::OptionalLastValue<void> >::operator() (this=0x555562ff0fe0, 
    a1=true, a2=PBD::Controllable::UseGroup) at libs/pbd/pbd/signals_generated.h:1080
#20 0x00007ffff6972782 in ARDOUR::AutomationControl::actually_set_value (this=0x555562ff0e20, value=1, gcd=PBD::Controllable::UseGroup)
    at ../libs/ardour/automation_control.cc:225
#21 0x00007ffff705b551 in ARDOUR::SlavableAutomationControl::actually_set_value (this=0x555562ff0e20, value=1, gcd=PBD::Controllable::UseGroup)
    at ../libs/ardour/slavable_automation_control.cc:186
#22 0x00007ffff7072503 in ARDOUR::SoloControl::actually_set_value (this=0x555562ff0e20, val=1, group_override=PBD::Controllable::UseGroup)
    at ../libs/ardour/solo_control.cc:174
#23 0x00007ffff697246e in ARDOUR::AutomationControl::set_value (this=0x555562ff0e20, val=1, gcd=PBD::Controllable::UseGroup) at ../libs/ardour/automation_control.cc:147
#24 0x00007ffff6fece5b in ARDOUR::Session::rt_set_controls (this=0x5555581af820, cl=..., val=1, gcd=PBD::Controllable::UseGroup)
    at ../libs/ardour/session_rtevents.cc:77
#25 0x00007ffff6feeea0 in boost::_mfi::mf3<void, ARDOUR::Session, boost::shared_ptr<std::__cxx11::list<boost::shared_ptr<ARDOUR::AutomationControl>, std::allocator<boost::shared_ptr<ARDOUR::AutomationControl> > > >, double, PBD::Controllable::GroupControlDisposition>::operator() (this=0x55556d859920, p=0x5555581af820, a1=..., a2=1, 
    a3=PBD::Controllable::UseGroup) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:393
#26 0x00007ffff6feebf4 in boost::_bi::list4<boost::_bi::value<ARDOUR::Session*>, boost::_bi::value<boost::shared_ptr<std::__cxx11::list<boost::shared_ptr<ARDOUR::AutomationControl>, std::allocator<boost::shared_ptr<ARDOUR::AutomationControl> > > > >, boost::_bi::value<double>, boost::_bi::value<PBD::Controllable::GroupControlDisposition> >::operator()<boost::_mfi::mf3<void, ARDOUR::Session, boost::shared_ptr<std::__cxx11::list<boost::shared_ptr<ARDOUR::AutomationControl>, std::allocator<boost::shared_ptr<ARDOUR::AutomationControl> > > >, double, PBD::Controllable::GroupControlDisposition>, boost::_bi::list0> (this=0x55556d859930, f=..., a=...)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:463
#27 0x00007ffff6fee7d5 in boost::_bi::bind_t<void, boost::_mfi::mf3<void, ARDOUR::Session, boost::shared_ptr<std::__cxx11::list<boost::shared_ptr<ARDOUR::AutomationControl>, std::allocator<boost::shared_ptr<ARDOUR::AutomationControl> > > >, double, PBD::Controllable::GroupControlDisposition>, boost::_bi::list4<boost::_bi::value<ARDOUR::Session*>, boost::_bi::value<boost::shared_ptr<std::__cxx11::list<boost::shared_ptr<ARDOUR::AutomationControl>, std::allocator<boost::shared_ptr<ARDOUR::AutomationControl> > > > >, boost::_bi::value<double>, boost::_bi::value<PBD::Controllable::GroupControlDisposition> > >::operator() (this=0x55556d859920)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#28 0x00007ffff6fee5e3 in boost::detail::function::void_function_obj_invoker0<boost::_bi::bind_t<void, boost::_mfi::mf3<void, ARDOUR::Session, boost::shared_ptr<std::__cxx11::list<boost::shared_ptr<ARDOUR::AutomationControl>, std::allocator<boost::shared_ptr<ARDOUR::AutomationControl> > > >, double, PBD::Controllable::GroupControlDisposition>, boost::_bi::list4<boost::_bi::value<ARDOUR::Session*>, boost::_bi::value<boost::shared_ptr<std::__cxx11::list<boost::shared_ptr<ARDOUR::AutomationControl>, std::allocator<boost::shared_ptr<ARDOUR::AutomationControl> > > > >, boost::_bi::value<double>, boost::_bi::value<PBD::Controllable::GroupControlDisposition> > >, void>::invoke (function_obj_ptr=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:159
#29 0x0000555555b8b94c in boost::function0<void>::operator() (this=0x5555572562e8)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/function/function_template.hpp:769
#30 0x00007ffff6fed10d in ARDOUR::Session::process_rtop (this=0x5555581af820, ev=0x555557256280) at ../libs/ardour/session_rtevents.cc:117
#31 0x00007ffff6fe87e1 in ARDOUR::Session::process_event (this=0x5555581af820, ev=0x555557256280) at ../libs/ardour/session_process.cc:979
#32 0x00007ffff6fc466c in ARDOUR::SessionEventManager::merge_event (this=0x5555581af9b0, ev=0x555557256280) at ../libs/ardour/session_events.cc:222
#33 0x00007ffff6fe5bfe in ARDOUR::Session::process_with_events (this=0x5555581af820, nframes=4096) at ../libs/ardour/session_process.cc:352
#34 0x00007ffff6fe44ac in ARDOUR::Session::process (this=0x5555581af820, nframes=4096) at ../libs/ardour/session_process.cc:97
#35 0x00007ffff6925755 in ARDOUR::AudioEngine::process_callback (this=0x55555712d100, nframes=4096) at ../libs/ardour/audioengine.cc:473
#36 0x00007fffcd51e318 in ARDOUR::AlsaAudioBackend::main_process_thread (this=0x5555576fa880) at ../libs/backends/alsa/alsa_audiobackend.cc:1879
#37 0x00007fffcd517a0f in pthread_process (arg=0x5555576fa880) at ../libs/backends/alsa/alsa_audiobackend.cc:734
---Type <return> to continue, or q <return> to quit---
#38 0x00007fffeecb96db in start_thread (arg=0x7fffc8128700) at pthread_create.c:463
#39 0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7fffc8131700 (LWP 2635)):
#0  0x00007fffebef0bf9 in __GI___poll (fds=0x5555578fa600, nfds=1, timeout=100) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fffcd543d12 in ARDOUR::AlsaRawMidiIn::main_process_thread (this=0x5555578fa9b0) at ../libs/backends/alsa/alsa_rawmidi.cc:255
#2  0x00007fffcd541941 in pthread_process (arg=0x5555578fae08) at ../libs/backends/alsa/alsa_midi.cc:68
#3  0x00007fffeecb96db in start_thread (arg=0x7fffc8131700) at pthread_create.c:463
#4  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7ffff7e04700 (LWP 2634)):
#0  0x00007fffeecbf9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55555745a268) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55555745a218, cond=0x55555745a240) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55555745a240, mutex=0x55555745a218) at pthread_cond_wait.c:655
#3  0x00007fffcd5435f5 in ARDOUR::AlsaRawMidiOut::main_process_thread (this=0x55555745a1f0) at ../libs/backends/alsa/alsa_rawmidi.cc:150
#4  0x00007fffcd541941 in pthread_process (arg=0x55555745a208) at ../libs/backends/alsa/alsa_midi.cc:68
#5  0x00007fffeecb96db in start_thread (arg=0x7ffff7e04700) at pthread_create.c:463
#6  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7fffc9553700 (LWP 2633)):
#0  0x00007fffebef303f in __GI___select (nfds=1, readfds=0x7fffc9550c00, writefds=0x0, exceptfds=0x0, timeout=0x7fffc9550c80) at ../sysdeps/unix/sysv/linux/select.c:41
#1  0x00007ffff41eedf6 in PBD::SystemExec::output_interposer (this=0x5555575d8ec0) at ../libs/pbd/system_exec.cc:995
#2  0x00007ffff41edf36 in interposer_thread (arg=0x5555575d8ec0) at ../libs/pbd/system_exec.cc:375
#3  0x00007fffeecb96db in start_thread (arg=0x7fffc9553700) at pthread_create.c:463
#4  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fffcc92c700 (LWP 2626)):
#0  0x00007fffebef0bf9 in __GI___poll (fds=0x5555573c1730, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff2f66d66 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff2f66e7c in g_main_context_iteration () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff2f66ec1 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#4  0x00007ffff2f961e5 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#5  0x00007fffeecb96db in start_thread (arg=0x7fffcc92c700) at pthread_create.c:463
#6  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fffcbb74700 (LWP 2622)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2fb7e4c in g_cond_wait () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff692621d in ARDOUR::AudioEngine::do_devicelist_update (this=0x55555712d100) at ../libs/ardour/audioengine.cc:678
#3  0x00007ffff693320b in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x55555712a290, p=0x55555712d100)
---Type <return> to continue, or q <return> to quit---
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff6932c3a in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (
    this=0x55555712a2a0, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#5  0x00007ffff6932377 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x55555712a290) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#6  0x00007ffff6931b76 in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > > >::operator() (this=0x55555712a290) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff6930d34 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >, void>::call_it (rep=0x55555712a260) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff3500c4d in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff2f961e5 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#10 0x00007fffeecb96db in start_thread (arg=0x7fffcbb74700) at pthread_create.c:463
#11 0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fffd5745700 (LWP 2621)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2fb7e4c in g_cond_wait () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff6925fe4 in ARDOUR::AudioEngine::do_reset_backend (this=0x55555712d100) at ../libs/ardour/audioengine.cc:642
#3  0x00007ffff693320b in boost::_mfi::mf0<void, ARDOUR::AudioEngine>::operator() (this=0x5555571bc960, p=0x55555712d100)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/mem_fn_template.hpp:49
#4  0x00007ffff6932c3a in boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> >::operator()<boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list0> (
    this=0x5555571bc970, f=..., a=...) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:259
#5  0x00007ffff6932377 in boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >::operator() (this=0x5555571bc960) at /home/ardour/linux-x86_64-v5/gtk/inst/include/boost/bind/bind.hpp:1294
#6  0x00007ffff6931b76 in sigc::adaptor_functor<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > > >::operator() (this=0x5555571bc960) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#7  0x00007ffff6930d34 in sigc::internal::slot_call0<boost::_bi::bind_t<void, boost::_mfi::mf0<void, ARDOUR::AudioEngine>, boost::_bi::list1<boost::_bi::value<ARDOUR::AudioEngine*> > >, void>::call_it (rep=0x5555571bc930) at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#8  0x00007ffff3500c4d in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglibmm-2.4.so.1
#9  0x00007ffff2f961e5 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#10 0x00007fffeecb96db in start_thread (arg=0x7fffd5745700) at pthread_create.c:463
#11 0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fffe50a6700 (LWP 2619)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2fb7e4c in g_cond_wait () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff68da0b0 in ARDOUR::Analyser::work () at ../libs/ardour/analyser.cc:93
#3  0x00007ffff68d9e9c in analyser_work () at ../libs/ardour/analyser.cc:58
#4  0x0000555556402427 in sigc::pointer_functor0<void>::operator() (this=0x5555571befa8)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
---Type <return> to continue, or q <return> to quit---
#5  0x00005555563ff55a in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x5555571befa0)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#6  0x00005555563fb3e3 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x5555571bef70)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#7  0x00007ffff3500c4d in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglibmm-2.4.so.1
#8  0x00007ffff2f961e5 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#9  0x00007fffeecb96db in start_thread (arg=0x7fffe50a6700) at pthread_create.c:463
#10 0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fffe58a7700 (LWP 2618)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2fb7e4c in g_cond_wait () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff70794b6 in peak_thread_work () at ../libs/ardour/source_factory.cc:74
#3  0x0000555556402427 in sigc::pointer_functor0<void>::operator() (this=0x5555571bf168)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x00005555563ff55a in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x5555571bf160)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#5  0x00005555563fb3e3 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x5555571bf130)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff3500c4d in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglibmm-2.4.so.1
#7  0x00007ffff2f961e5 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#8  0x00007fffeecb96db in start_thread (arg=0x7fffe58a7700) at pthread_create.c:463
#9  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fffe60a8700 (LWP 2617)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007ffff2fb7e4c in g_cond_wait () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff70794b6 in peak_thread_work () at ../libs/ardour/source_factory.cc:74
#3  0x0000555556402427 in sigc::pointer_functor0<void>::operator() (this=0x555557109e98)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/ptr_fun.h:77
#4  0x00005555563ff55a in sigc::adaptor_functor<sigc::pointer_functor0<void> >::operator() (this=0x555557109e90)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/adaptors/adaptor_trait.h:256
#5  0x00005555563fb3e3 in sigc::internal::slot_call0<sigc::pointer_functor0<void>, void>::call_it (rep=0x555557109e60)
    at /home/ardour/linux-x86_64-v5/gtk/inst/include/sigc++-2.0/sigc++/functors/slot.h:103
#6  0x00007ffff3500c4d in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglibmm-2.4.so.1
#7  0x00007ffff2f961e5 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#8  0x00007fffeecb96db in start_thread (arg=0x7fffe60a8700) at pthread_create.c:463
#9  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fffe68a9700 (LWP 2616)):
---Type <return> to continue, or q <return> to quit---
#0  0x00007fffeecc3c60 in __GI___nanosleep (requested_time=0x7fffe68a8bf0, remaining=0x7fffe68a8c00) at ../sysdeps/unix/sysv/linux/nanosleep.c:28
#1  0x00007ffff2f97a38 in g_usleep () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x000055555677b318 in gui_event_loop (ptr=0x0) at ../gtk2_ardour/linux_vst_gui_support.cc:463
#3  0x00007fffeecb96db in start_thread (arg=0x7fffe68a9700) at pthread_create.c:463
#4  0x00007fffebefd88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7ffff7fac900 (LWP 2612)):
#0  0x00007fffebef0bf9 in __GI___poll (fds=0x5555574137d0, nfds=4, timeout=40) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff2f66d66 in ?? () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#2  0x00007ffff2f670f2 in g_main_loop_run () from /opt/Ardour-6.0.rc1.107-dbg/lib/libglib-2.0.so.0
#3  0x00007ffff25593e7 in gtk_main () from /opt/Ardour-6.0.rc1.107-dbg/lib/libgtk-x11-2.0.so.0
#4  0x00007ffff458025a in Gtkmm2ext::UI::run (this=0x555557159990, old_receiver=...) at ../libs/gtkmm2ext/gtk_ui.cc:290
#5  0x0000555556135091 in main (argc=1, argv=0x7fffffffd228) at ../gtk2_ardour/main.cc:435
(gdb)