Thread 17 (Thread 0x7fffcdffb700 (LWP 29782)):
#0  0x00007ffff5e949f3 in futex_wait_cancelable (private=<optimised out>, expected=0, futex_word=0x55555577a6f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff5e949f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55555577b080, cond=0x55555577a6d0) at pthread_cond_wait.c:502
#2  0x00007ffff5e949f3 in __pthread_cond_wait (cond=0x55555577a6d0, mutex=0x55555577b080) at pthread_cond_wait.c:655
#3  0x00007fffece395e4 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#4  0x00007fffece39835 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#5  0x00007fffed236ae5 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#6  0x00007fffed257592 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#7  0x00007ffff5e8e6db in start_thread (arg=0x7fffcdffb700) at pthread_create.c:463
#8  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7fffce7fc700 (LWP 29781)):
#0  0x00007ffff5e949f3 in futex_wait_cancelable (private=<optimised out>, expected=0, futex_word=0x55555577a6f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff5e949f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55555577b080, cond=0x55555577a6d0) at pthread_cond_wait.c:502
#2  0x00007ffff5e949f3 in __pthread_cond_wait (cond=0x55555577a6d0, mutex=0x55555577b080) at pthread_cond_wait.c:655
#3  0x00007fffece395e4 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#4  0x00007fffece39835 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#5  0x00007fffed236ae5 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#6  0x00007fffed257592 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#7  0x00007ffff5e8e6db in start_thread (arg=0x7fffce7fc700) at pthread_create.c:463
#8  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7fffceffd700 (LWP 29780)):
#0  0x00007ffff5e949f3 in futex_wait_cancelable (private=<optimised out>, expected=0, futex_word=0x55555577a6fc) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff5e949f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55555577b080, cond=0x55555577a6d0) at pthread_cond_wait.c:502
#2  0x00007ffff5e949f3 in __pthread_cond_wait (cond=0x55555577a6d0, mutex=0x55555577b080) at pthread_cond_wait.c:655
#3  0x00007fffece395e4 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#4  0x00007fffece39835 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#5  0x00007fffed236ae5 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#6  0x00007fffed257592 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#7  0x00007ffff5e8e6db in start_thread (arg=0x7fffceffd700) at pthread_create.c:463
#8  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7fffcf7fe700 (LWP 29779)):
#0  0x00007ffff5e949f3 in futex_wait_cancelable (private=<optimised out>, expected=0, futex_word=0x55555577a6f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff5e949f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55555577b080, cond=0x55555577a6d0) at pthread_cond_wait.c:502
#2  0x00007ffff5e949f3 in __pthread_cond_wait (cond=0x55555577a6d0, mutex=0x55555577b080) at pthread_cond_wait.c:655
#3  0x00007fffece395e4 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#4  0x00007fffece39835 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#5  0x00007fffed236ae5 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#6  0x00007fffed257592 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#7  0x00007ffff5e8e6db in start_thread (arg=0x7fffcf7fe700) at pthread_create.c:463
#8  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fffcffff700 (LWP 29778)):
#0  0x00007ffff5e949f3 in futex_wait_cancelable (private=<optimised out>, expected=0, futex_word=0x55555577a6fc) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff5e949f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55555577b080, cond=0x55555577a6d0) at pthread_cond_wait.c:502
#2  0x00007ffff5e949f3 in __pthread_cond_wait (cond=0x55555577a6d0, mutex=0x55555577b080) at pthread_cond_wait.c:655
#3  0x00007fffece395e4 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#4  0x00007fffece39835 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#5  0x00007fffed236ae5 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#6  0x00007fffed257592 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#7  0x00007ffff5e8e6db in start_thread (arg=0x7fffcffff700) at pthread_create.c:463
#8  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fffd4ff9700 (LWP 29777)):
#0  0x00007ffff5e949f3 in futex_wait_cancelable (private=<optimised out>, expected=0, futex_word=0x55555577a6fc) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff5e949f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55555577b080, cond=0x55555577a6d0) at pthread_cond_wait.c:502
#2  0x00007ffff5e949f3 in __pthread_cond_wait (cond=0x55555577a6d0, mutex=0x55555577b080) at pthread_cond_wait.c:655
#3  0x00007fffece395e4 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#4  0x00007fffece39835 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#5  0x00007fffed236ae5 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#6  0x00007fffed257592 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#7  0x00007ffff5e8e6db in start_thread (arg=0x7fffd4ff9700) at pthread_create.c:463
#8  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fffd57fa700 (LWP 29776)):
#0  0x00007ffff5e949f3 in futex_wait_cancelable (private=<optimised out>, expected=0, futex_word=0x55555577a6f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff5e949f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55555577b080, cond=0x55555577a6d0) at pthread_cond_wait.c:502
#2  0x00007ffff5e949f3 in __pthread_cond_wait (cond=0x55555577a6d0, mutex=0x55555577b080) at pthread_cond_wait.c:655
#3  0x00007fffece395e4 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#4  0x00007fffece39835 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#5  0x00007fffed236ae5 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#6  0x00007fffed257592 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#7  0x00007ffff5e8e6db in start_thread (arg=0x7fffd57fa700) at pthread_create.c:463
#8  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fffd5ffb700 (LWP 29775)):
#0  0x00007ffff5e949f3 in futex_wait_cancelable (private=<optimised out>, expected=0, futex_word=0x55555577a6f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff5e949f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55555577b080, cond=0x55555577a6d0) at pthread_cond_wait.c:502
#2  0x00007ffff5e949f3 in __pthread_cond_wait (cond=0x55555577a6d0, mutex=0x55555577b080) at pthread_cond_wait.c:655
#3  0x00007fffece395e4 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#4  0x00007fffece39835 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#5  0x00007fffed236ae5 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#6  0x00007fffed257592 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#7  0x00007ffff5e8e6db in start_thread (arg=0x7fffd5ffb700) at pthread_create.c:463
#8  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fffd67fc700 (LWP 29774)):
#0  0x00007ffff5e949f3 in futex_wait_cancelable (private=<optimised out>, expected=0, futex_word=0x55555577a6f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff5e949f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55555577b080, cond=0x55555577a6d0) at pthread_cond_wait.c:502
#2  0x00007ffff5e949f3 in __pthread_cond_wait (cond=0x55555577a6d0, mutex=0x55555577b080) at pthread_cond_wait.c:655
#3  0x00007fffece395e4 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#4  0x00007fffece39835 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#5  0x00007fffed236ae5 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#6  0x00007fffed257592 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#7  0x00007ffff5e8e6db in start_thread (arg=0x7fffd67fc700) at pthread_create.c:463
#8  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fffd6ffd700 (LWP 29773)):
#0  0x00007ffff5e949f3 in futex_wait_cancelable (private=<optimised out>, expected=0, futex_word=0x55555577a6f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff5e949f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55555577b080, cond=0x55555577a6d0) at pthread_cond_wait.c:502
#2  0x00007ffff5e949f3 in __pthread_cond_wait (cond=0x55555577a6d0, mutex=0x55555577b080) at pthread_cond_wait.c:655
#3  0x00007fffece395e4 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#4  0x00007fffece39835 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#5  0x00007fffed236ae5 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#6  0x00007fffed257592 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#7  0x00007ffff5e8e6db in start_thread (arg=0x7fffd6ffd700) at pthread_create.c:463
#8  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fffd77fe700 (LWP 29772)):
#0  0x00007ffff5e949f3 in futex_wait_cancelable (private=<optimised out>, expected=0, futex_word=0x55555577a6fc) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff5e949f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55555577b080, cond=0x55555577a6d0) at pthread_cond_wait.c:502
#2  0x00007ffff5e949f3 in __pthread_cond_wait (cond=0x55555577a6d0, mutex=0x55555577b080) at pthread_cond_wait.c:655
#3  0x00007fffece395e4 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#4  0x00007fffece39835 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#5  0x00007fffed236ae5 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#6  0x00007fffed257592 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#7  0x00007ffff5e8e6db in start_thread (arg=0x7fffd77fe700) at pthread_create.c:463
#8  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fffd7fff700 (LWP 29771)):
#0  0x00007ffff5e949f3 in futex_wait_cancelable (private=<optimised out>, expected=0, futex_word=0x55555577a6fc) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff5e949f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55555577b080, cond=0x55555577a6d0) at pthread_cond_wait.c:502
#2  0x00007ffff5e949f3 in __pthread_cond_wait (cond=0x55555577a6d0, mutex=0x55555577b080) at pthread_cond_wait.c:655
#3  0x00007fffece395e4 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#4  0x00007fffece39835 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#5  0x00007fffed236ae5 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#6  0x00007fffed257592 in  () at /usr/lib/x86_64-linux-gnu/libmozjs-52.so.0
#7  0x00007ffff5e8e6db in start_thread (arg=0x7fffd7fff700) at pthread_create.c:463
#8  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fffdf7fe700 (LWP 29726)):
#0  0x00007ffff61babf9 in __GI___poll (fds=0x55555584bb10, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff6714439 in g_main_context_poll (priority=<optimised out>, n_fds=1, fds=0x55555584bb10, timeout=<optimised out>, context=0x55555584b730) at ../../../../glib/gmain.c:4203
#2  0x00007ffff6714439 in g_main_context_iterate (context=context@entry=0x55555584b730, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimised out>) at ../../../../glib/gmain.c:3897
#3  0x00007ffff671454c in g_main_context_iteration (context=0x55555584b730, may_block=1) at ../../../../glib/gmain.c:3963
#4  0x00007fffe400e36d in  () at /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
#5  0x00007ffff673be85 in g_thread_proxy (data=0x55555581d800) at ../../../../glib/gthread.c:784
#6  0x00007ffff5e8e6db in start_thread (arg=0x7fffdf7fe700) at pthread_create.c:463
#7  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fffdffff700 (LWP 29725)):
#0  0x00007ffff61babf9 in __GI___poll (fds=0x555556bd1240, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff6714439 in g_main_context_poll (priority=<optimised out>, n_fds=3, fds=0x555556bd1240, timeout=<optimised out>, context=0x5555557fb8f0) at ../../../../glib/gmain.c:4203
#2  0x00007ffff6714439 in g_main_context_iterate (context=0x5555557fb8f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimised out>) at ../../../../glib/gmain.c:3897
#3  0x00007ffff67147d2 in g_main_loop_run (loop=0x5555557fba30) at ../../../../glib/gmain.c:4098
#4  0x00007ffff6d00f66 in gdbus_shared_thread_func (user_data=0x5555557fb8c0) at ../../../../gio/gdbusprivate.c:275
#5  0x00007ffff673be85 in g_thread_proxy (data=0x5555557aab20) at ../../../../glib/gthread.c:784
#6  0x00007ffff5e8e6db in start_thread (arg=0x7fffdffff700) at pthread_create.c:463
#7  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fffe5163700 (LWP 29724)):
#0  0x00007ffff61babf9 in __GI___poll (fds=0x5555557f5bf0, nfds=2, timeout=3998) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff6714439 in g_main_context_poll (priority=<optimised out>, n_fds=2, fds=0x5555557f5bf0, timeout=<optimised out>, context=0x5555557f5ab0) at ../../../../glib/gmain.c:4203
#2  0x00007ffff6714439 in g_main_context_iterate (context=context@entry=0x5555557f5ab0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimised out>) at ../../../../glib/gmain.c:3897
#3  0x00007ffff671454c in g_main_context_iteration (context=0x5555557f5ab0, may_block=may_block@entry=1) at ../../../../glib/gmain.c:3963
#4  0x00007ffff6714591 in glib_worker_main (data=<optimised out>) at ../../../../glib/gmain.c:5772
#5  0x00007ffff673be85 in g_thread_proxy (data=0x5555557aaa80) at ../../../../glib/gthread.c:784
#6  0x00007ffff5e8e6db in start_thread (arg=0x7fffe5163700) at pthread_create.c:463
#7  0x00007ffff61c788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7ffff7fa8140 (LWP 29719)):
#0  0x00007ffff61babf9 in __GI___poll (fds=0x7fffffffd598, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fffefbf2747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fffefbf406f in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fffefbf41ef in xcb_wait_for_reply64 () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007ffff72436a8 in _XReply () at /usr/lib/x86_64-linux-gnu/libX11.so.6
#5  0x00007ffff723f18d in XSync () at /usr/lib/x86_64-linux-gnu/libX11.so.6
#6  0x00007ffff78b819e in meta_pre_paint_func (data=0x555555fab9f0) at compositor/compositor.c:1417
#7  0x00007ffff75cd152 in _clutter_run_repaint_functions (flags=flags@entry=CLUTTER_REPAINT_FLAGS_PRE_PAINT) at clutter-main.c:3448
#8  0x00007ffff75ce060 in master_clock_update_stages (master_clock=0x7fffd80060f0 [ClutterMasterClockDefault], stages=0x555556ab1c90) at clutter-master-clock-default.c:450
#9  0x00007ffff75ce060 in clutter_clock_dispatch (source=source@entry=0x555555c46960, callback=<optimised out>, user_data=<optimised out>) at clutter-master-clock-default.c:580
#10 0x00007ffff6714287 in g_main_dispatch (context=0x555555788520) at ../../../../glib/gmain.c:3176
#11 0x00007ffff6714287 in g_main_context_dispatch (context=context@entry=0x555555788520) at ../../../../glib/gmain.c:3829
#12 0x00007ffff67144c0 in g_main_context_iterate (context=0x555555788520, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimised out>) at ../../../../glib/gmain.c:3902
#13 0x00007ffff67147d2 in g_main_loop_run (loop=0x555555789a70) at ../../../../glib/gmain.c:4098
#14 0x00007ffff78dae84 in meta_run () at core/main.c:544
#15 0x0000555555555a54 in main (argc=<optimised out>, argv=<optimised out>) at main.c:327