Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fffcba29830 (LWP 4727)] 0x00007ffff78e8826 in ARDOUR::AudioDiskstream::_do_refill (this=0x7fffcc5a31c0, mixdown_buffer=0x7fffcbb44010, gain_buffer=0x7fffcbb03010) at libs/ardour/audio_diskstream.cc:1344 1344 chan->playback_buf->get_write_vector (&vector); (gdb) thread apply all bt Thread 19 (Thread 0x7fffcb9ae830 (LWP 4728)): #0 0x00007fffef7a8123 in *__GI___poll (fds=, nfds=, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87 #1 0x00007ffff7a98b9a in ARDOUR::Session::midi_thread_work (this=0x2333b10) at libs/ardour/session_midi.cc:1220 #2 0x00007ffff7a98682 in ARDOUR::Session::_midi_thread_work (arg=0x2333b10) at libs/ardour/session_midi.cc:1138 #3 0x00007fffefa4b8ba in start_thread (arg=) at pthread_create.c:300 #4 0x00007fffef7b303d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #5 0x0000000000000000 in ?? () Thread 18 (Thread 0x7fffcba29830 (LWP 4727)): #0 0x00007ffff78e8826 in ARDOUR::AudioDiskstream::_do_refill (this=0x7fffcc5a31c0, mixdown_buffer=0x7fffcbb44010, gain_buffer=0x7fffcbb03010) at libs/ardour/audio_diskstream.cc:1344 #1 0x00007ffff78f0bd1 in ARDOUR::AudioDiskstream::do_refill (this=0x7fffcc5a31c0) at libs/ardour/ardour/audio_diskstream.h:219 #2 0x00007ffff7a3568e in ARDOUR::Session::butler_thread_work (this=0x2333b10) at libs/ardour/session_butler.cc:267 #3 0x00007ffff7a35191 in ARDOUR::Session::_butler_thread_work (arg=0x2333b10) at libs/ardour/session_butler.cc:159 #4 0x00007fffefa4b8ba in start_thread (arg=) at pthread_create.c:300 #5 0x00007fffef7b303d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #6 0x0000000000000000 in ?? () Thread 17 (Thread 0x7fffcbbfe830 (LWP 4726)): #0 0x00007fffefa537dd in nanosleep () at ../sysdeps/unix/syscall-template.S:82 #1 0x00007ffff5ae82a8 in g_usleep () from /lib/libglib-2.0.so.0 #2 0x00007ffff5847724 in Glib::usleep (microseconds=10000) at libs/glibmm2/glibmm/timer.cc:68 #3 0x00007ffff78fd9d2 in ARDOUR::AudioEngine::meter_thread (this=0x1ef9280) at libs/ardour/audioengine.cc:472 ---Type to continue, or q to quit--- #4 0x00007ffff7905e4d in sigc::bound_mem_functor0::operator() (this=0x231fda8) at libs/sigc++2/sigc++/functors/mem_fun.h:1787 #5 0x00007ffff7905bc4 in sigc::adaptor_functor >::operator() (this=0x231fda0) at libs/sigc++2/sigc++/adaptors/adaptor_trait.h:251 #6 0x00007ffff790559f in sigc::internal::slot_call0, void>::call_it (rep=0x231fd70) at libs/sigc++2/sigc++/functors/slot.h:103 #7 0x00007ffff793ed58 in sigc::slot0::operator() (this=0x2310fe0) at libs/sigc++2/sigc++/functors/slot.h:440 #8 0x00007ffff5860a2c in call_thread_entry_slot (data=0x2310fe0) at libs/glibmm2/glibmm/thread.cc:43 #9 0x00007ffff5ae56e4 in ?? () from /lib/libglib-2.0.so.0 #10 0x00007fffefa4b8ba in start_thread (arg=) at pthread_create.c:300 #11 0x00007fffef7b303d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #12 0x0000000000000000 in ?? () Thread 16 (Thread 0x7fffd0118710 (LWP 4725)): #0 0x00007fffef7a8123 in *__GI___poll (fds=, nfds=, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:87 #1 0x00007ffff31ade96 in jack_client_core_wait () from /usr/lib/libjack.so.0 #2 0x00007ffff31ae098 in jack_thread_wait () from /usr/lib/libjack.so.0 #3 0x00007ffff31ae1b4 in jack_client_thread () from /usr/lib/libjack.so.0 #4 0x00007fffefa4b8ba in start_thread (arg=) at pthread_create.c:300 #5 0x00007fffef7b303d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #6 0x0000000000000000 in ?? () Thread 15 (Thread 0x7fffcaffd710 (LWP 4723)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007ffff31af47b in mb_thread_func () from /usr/lib/libjack.so.0 ---Type to continue, or q to quit--- #2 0x00007fffefa4b8ba in start_thread (arg=) at pthread_create.c:300 #3 0x00007fffef7b303d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #4 0x0000000000000000 in ?? () Thread 14 (Thread 0x7fffc8ff9710 (LWP 4722)): #0 0x00007fffef7a8123 in *__GI___poll (fds=, nfds=, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87 #1 0x00007fffc83ddb1f in ?? () from /usr/lib/libpulse.so.0 #2 0x00007fffc83cdbb6 in pa_mainloop_poll () from /usr/lib/libpulse.so.0 #3 0x00007fffc83cef99 in pa_mainloop_iterate () from /usr/lib/libpulse.so.0 #4 0x00007fffc83cf050 in pa_mainloop_run () from /usr/lib/libpulse.so.0 #5 0x00007fffc83dd92b in ?? () from /usr/lib/libpulse.so.0 #6 0x00007fffc819b710 in ?? () from /usr/lib/libpulsecommon-0.9.21.so #7 0x00007fffefa4b8ba in start_thread (arg=) at pthread_create.c:300 #8 0x00007fffef7b303d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #9 0x0000000000000000 in ?? () Thread 4 (Thread 0x7fffe6c87710 (LWP 4711)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007ffff58614d1 in Glib::Cond::wait (this=0xe85c40, mutex=...) at libs/glibmm2/glibmm/thread.cc:362 #2 0x00007ffff78dc156 in ARDOUR::Analyser::work () at libs/ardour/analyser.cc:85 #3 0x00007ffff78dbdfd in analyser_work () at libs/ardour/analyser.cc:49 #4 0x00007ffff793ed58 in sigc::slot0::operator() (this=0xe85c60) at libs/sigc++2/sigc++/functors/slot.h:440 #5 0x00007ffff5860a2c in call_thread_entry_slot (data=0xe85c60) at libs/glibmm2/glibmm/thread.cc:43 #6 0x00007ffff5ae56e4 in ?? () from /lib/libglib-2.0.so.0 ---Type to continue, or q to quit--- #7 0x00007fffefa4b8ba in start_thread (arg=) at pthread_create.c:300 #8 0x00007fffef7b303d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #9 0x0000000000000000 in ?? () Thread 3 (Thread 0x7fffe7488710 (LWP 4710)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007ffff58614d1 in Glib::Cond::wait (this=0xe85520, mutex=...) at libs/glibmm2/glibmm/thread.cc:362 #2 0x00007ffff7ad4282 in peak_thread_work () at libs/ardour/source_factory.cc:65 #3 0x00007ffff793ed58 in sigc::slot0::operator() (this=0xe85930) at libs/sigc++2/sigc++/functors/slot.h:440 #4 0x00007ffff5860a2c in call_thread_entry_slot (data=0xe85930) at libs/glibmm2/glibmm/thread.cc:43 #5 0x00007ffff5ae56e4 in ?? () from /lib/libglib-2.0.so.0 #6 0x00007fffefa4b8ba in start_thread (arg=) at pthread_create.c:300 #7 0x00007fffef7b303d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 #8 0x0000000000000000 in ?? () Thread 2 (Thread 0x7fffe7c89710 (LWP 4709)): #0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162 #1 0x00007ffff58614d1 in Glib::Cond::wait (this=0xe85520, mutex=...) at libs/glibmm2/glibmm/thread.cc:362 #2 0x00007ffff7ad4282 in peak_thread_work () at libs/ardour/source_factory.cc:65 #3 0x00007ffff793ed58 in sigc::slot0::operator() (this=0xe85730) at libs/sigc++2/sigc++/functors/slot.h:440 #4 0x00007ffff5860a2c in call_thread_entry_slot (data=0xe85730) at libs/glibmm2/glibmm/thread.cc:43 #5 0x00007ffff5ae56e4 in ?? () from /lib/libglib-2.0.so.0 #6 0x00007fffefa4b8ba in start_thread (arg=) at pthread_create.c:300 #7 0x00007fffef7b303d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112 ---Type to continue, or q to quit--- #8 0x0000000000000000 in ?? () Thread 1 (Thread 0x7ffff7fa57e0 (LWP 4706)): #0 0x00007fffef7a8123 in *__GI___poll (fds=, nfds=, timeout=39) at ../sysdeps/unix/sysv/linux/poll.c:87 #1 0x00007ffff5ac0299 in ?? () from /lib/libglib-2.0.so.0 #2 0x00007ffff5ac0a45 in g_main_loop_run () from /lib/libglib-2.0.so.0 #3 0x00007ffff531c647 in gtk_main () from /usr/lib/libgtk-x11-2.0.so.0 #4 0x00007ffff396aa33 in Gtk::Main::run_impl (this=0xbee450) at libs/gtkmm2/gtk/gtkmm/main.cc:503 #5 0x00007ffff396a825 in Gtk::Main::run () at libs/gtkmm2/gtk/gtkmm/main.cc:450 #6 0x00007ffff34739ee in Gtkmm2ext::UI::run (this=0xbe8b60, old_receiver=...) at libs/gtkmm2ext/gtk_ui.cc:230 #7 0x000000000074aa5e in main () (gdb)