$ gdb -batch -n -ex 'set height 0' -ex bt -ex 'thread apply all bt full' --core /var/crash/1000/2194-1000-1000-6-1466671648-chianamo--usr-bin-gnome-shell.core /usr/bin/gnome-shell
[New LWP 2194]
[New LWP 2195]
[New LWP 2225]
[New LWP 2196]
[New LWP 2218]
[New LWP 2226]
[New LWP 2227]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/gnome-shell'.
Program terminated with signal SIGABRT, Aborted.
#0  0x00007ffa31ac6458 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
55	../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
[Current thread is 1 (Thread 0x7ffa34f79a80 (LWP 2194))]
#0  0x00007ffa31ac6458 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
#1  0x00007ffa31ac78da in __GI_abort () at abort.c:89
#2  0x00007ffa33a2487d in meta_bug (format=format@entry=0x7ffa33a6c438 "No such frame window 0x%lx!\n") at core/util.c:436
#3  0x00007ffa33a0a759 in get_window (xdisplay=xdisplay@entry=0x3c194b0, frame_xwindow=0) at core/core.c:58
#4  0x00007ffa33a0aa52 in meta_core_begin_grab_op (xdisplay=0x3c194b0, frame_xwindow=<optimized out>, op=op@entry=META_GRAB_OP_WINDOW_BASE, pointer_already_grabbed=pointer_already_grabbed@entry=0, frame_action=frame_action@entry=1, button=0, modmask=0, timestamp=0, root_x=761, root_y=51) at core/core.c:220
#5  0x00007ffa33a33574 in meta_ui_frame_handle_event (time=0, frames=0x3f3a2d0 [MetaFrames]) at ui/frames.c:918
#6  0x00007ffa33a33574 in meta_ui_frame_handle_event (event=0x1, frame=<optimized out>) at ui/frames.c:1282
#7  0x00007ffa33a33574 in meta_ui_frame_handle_event (frame=<optimized out>, event=event@entry=0xa5d3360) at ui/frames.c:1528
#8  0x00007ffa33a2f03a in meta_window_handle_ungrabbed_event (window=window@entry=0x71ad380 [MetaWindowX11], event=event@entry=0xa5d3360) at core/window.c:7702
#9  0x00007ffa33a11503 in event_callback (event=0xa5d3360, display=0x3d24000 [MetaDisplay]) at core/events.c:303
#10 0x00007ffa33a11503 in event_callback (event=0xa5d3360, data=0x3d24000) at core/events.c:363
#11 0x00007ffa32ddc2ad in _clutter_event_process_filters (event=event@entry=0xa5d3360) at clutter-event.c:1802
#12 0x00007ffa32dee16b in _clutter_process_event (device=0x3bbe0d0 [ClutterInputDeviceXI2], event=0xa5d3360) at clutter-main.c:2044
#13 0x00007ffa32dee16b in _clutter_process_event (context=0x25d65a0, event=0xa5d3360, stage=<optimized out>) at clutter-main.c:2401
#14 0x00007ffa32dee16b in _clutter_process_event (event=event@entry=0xa5d3360) at clutter-main.c:2561
#15 0x00007ffa32e04959 in _clutter_stage_process_queued_events (stage=0x3bd4300 [MetaStage]) at clutter-stage.c:1031
#16 0x00007ffa32df03e9 in clutter_clock_dispatch (master_clock=0x408e2c0 [ClutterMasterClockDefault], stages=<optimized out>) at clutter-master-clock-default.c:364
#17 0x00007ffa32df03e9 in clutter_clock_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at clutter-master-clock-default.c:561
#18 0x00007ffa3209e1a7 in g_main_context_dispatch (context=0x25d4de0) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3154
#19 0x00007ffa3209e1a7 in g_main_context_dispatch (context=context@entry=0x25d4de0) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3769
#20 0x00007ffa3209e400 in g_main_context_iterate (context=0x25d4de0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3840
#21 0x00007ffa3209e722 in g_main_loop_run (loop=0x3c14fc0) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:4034
#22 0x00007ffa33a1809c in meta_run () at core/main.c:537
#23 0x0000000000402197 in main (argc=1, argv=0x7ffd41d734d8) at main.c:471

Thread 7 (Thread 0x7ffa037fd700 (LWP 2227)):
#0  0x00007ffa31e4405f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffa23a74d70 in PR_WaitCondVar (cvar=0x3d400f0, timeout=4294967295) at ptsynch.c:396
        rv = <optimized out>
        thred = 0x3d81060
#2  0x00007ffa2d9645ce in js::SourceCompressorThread::compressorThread(void*) (this=0x3edac58) at /tmp/buildd/mozjs24-24.2.0/js/src/jsscript.cpp:1094
#3  0x00007ffa2d9645ce in js::SourceCompressorThread::compressorThread(void*) (arg=0x3edac58) at /tmp/buildd/mozjs24-24.2.0/js/src/jsscript.cpp:965
#4  0x00007ffa23a7a758 in _pt_root (arg=0x3d81060) at ptthread.c:216
        rv = <optimized out>
        thred = 0x3d81060
        detached = 0
        id = 140711777261312
        tid = 2227
#5  0x00007ffa31e3e464 in start_thread (arg=0x7ffa037fd700) at pthread_create.c:334
        __res = <optimized out>
        pd = 0x7ffa037fd700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140711777261312, -7645394537259902005, 0, 140725708073151, 3, 1, 7643203212063366091, 7643305568608934859}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007ffa31b7be5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7ffa03ffe700 (LWP 2226)):
#0  0x00007ffa31e4405f in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007ffa23a74d70 in PR_WaitCondVar (cvar=0x3d8c160, timeout=4294967295) at ptsynch.c:396
        rv = <optimized out>
        thred = 0x3ccfcd0
#2  0x00007ffa2d8ecf0e in js::GCHelperThread::threadLoop() (this=0x3edab78) at /tmp/buildd/mozjs24-24.2.0/js/src/jsgc.cpp:2266
        lock = {runtime = 0x3ed9e00}
#3  0x00007ffa23a7a758 in _pt_root (arg=0x3ccfcd0) at ptthread.c:216
        rv = <optimized out>
        thred = 0x3ccfcd0
        detached = 0
        id = 140711785654016
        tid = 2226
#4  0x00007ffa31e3e464 in start_thread (arg=0x7ffa03ffe700) at pthread_create.c:334
        __res = <optimized out>
        pd = 0x7ffa03ffe700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140711785654016, -7645394537259902005, 0, 140725708073119, 3, 1, 7643204311038122955, 7643305568608934859}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0x00007ffa31b7be5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7ffa154bc700 (LWP 2218)):
#0  0x00007ffa31b72dcd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffa3209e39c in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7ffa0c0010c0, timeout=<optimized out>, context=0x3c13930) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:4135
        poll_func = 0x7ffa320ad290 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7ffa0c0010c0
#2  0x00007ffa3209e39c in g_main_context_iterate (context=context@entry=0x3c13930, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3835
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x7ffa0c0010c0
#3  0x00007ffa3209e4ac in g_main_context_iteration (context=context@entry=0x3c13930, may_block=may_block@entry=1) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3901
        retval = <optimized out>
#4  0x00007ffa154c441d in dconf_gdbus_worker_thread (user_data=0x3c13930) at dconf-gdbus-thread.c:82
        context = 0x3c13930
#5  0x00007ffa320c4bc5 in g_thread_proxy (data=0x3c10800) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gthread.c:780
        thread = 0x3c10800
#6  0x00007ffa31e3e464 in start_thread (arg=0x7ffa154bc700) at pthread_create.c:334
        __res = <optimized out>
        pd = 0x7ffa154bc700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140712075839232, -7645394537259902005, 0, 140725708072815, 3, 62994736, 7643225099753577419, 7643305568608934859}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007ffa31b7be5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7ffa166cb700 (LWP 2196)):
#0  0x00007ffa31b72dcd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffa3209e39c in g_main_context_iterate (priority=2147483647, n_fds=3, fds=0x7ffa100362c0, timeout=<optimized out>, context=0x3bff8a0) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:4135
        poll_func = 0x7ffa320ad290 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = 6
        fds = 0x7ffa100362c0
#2  0x00007ffa3209e39c in g_main_context_iterate (context=0x3bff8a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3835
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 3
        allocated_nfds = 6
        fds = 0x7ffa100362c0
#3  0x00007ffa3209e722 in g_main_loop_run (loop=0x3bff830) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:4034
        __func__ = "g_main_loop_run"
#4  0x00007ffa328a9916 in gdbus_shared_thread_func (user_data=0x3bff870) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./gio/gdbusprivate.c:246
        data = 0x3bff870
#5  0x00007ffa320c4bc5 in g_thread_proxy (data=0x25d5190) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gthread.c:780
        thread = 0x25d5190
#6  0x00007ffa31e3e464 in start_thread (arg=0x7ffa166cb700) at pthread_create.c:334
        __res = <optimized out>
        pd = 0x7ffa166cb700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140712094775040, -7645394537259902005, 0, 140725708071871, 3, 62912624, 7643231946468318155, 7643305568608934859}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007ffa31b7be5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7ffa148ae700 (LWP 2225)):
#0  0x00007ffa31b72dcd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffa2df08ae1 in poll_func (__timeout=-1, __nfds=3, __fds=0x7ff9fc006c70) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
        mutex = 0x3d31d00
#2  0x00007ffa2df08ae1 in poll_func (ufds=0x7ff9fc006c70, nfds=3, timeout=-1, userdata=0x3d31d00) at pulse/thread-mainloop.c:69
        mutex = 0x3d31d00
#3  0x00007ffa2defa091 in pa_mainloop_poll (m=m@entry=0x3d3b000) at pulse/mainloop.c:844
        __func__ = "pa_mainloop_poll"
        __PRETTY_FUNCTION__ = "pa_mainloop_poll"
#4  0x00007ffa2defa72e in pa_mainloop_iterate (m=0x3d3b000, block=<optimized out>, retval=0x0) at pulse/mainloop.c:926
        r = 0
#5  0x00007ffa2defa7e0 in pa_mainloop_run (m=0x3d3b000, retval=retval@entry=0x0) at pulse/mainloop.c:944
        r = <optimized out>
#6  0x00007ffa2df08a29 in thread (userdata=0x3d37650) at pulse/thread-mainloop.c:100
        m = 0x3d37650
        mask = {__val = {18446744067267100671, 18446744073709551615 <repeats 15 times>}}
        prev_mask = {__val = {0, 0, 5, 140712555546816, 140711651444928, 140712330046160, 0, 140712606195824, 0, 140712606195824, 40, 0, 140725708074319, 3, 140725708075312, 140712552228280}}
        sa = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {0, 1, 140712607307744, 1, 140712607307744, 140712063195872, 0, 140712607308600, 140712063195616, 0, 140712555597887, 0, 31, 140712063195776, 0, 0}}, sa_flags = 0, sa_restorer = 0x0}
#7  0x00007ffa244ff648 in internal_thread_func (userdata=0x3d7b5d0) at pulsecore/thread-posix.c:81
        t = 0x3d7b5d0
#8  0x00007ffa31e3e464 in start_thread (arg=0x7ffa148ae700) at pthread_create.c:334
        __res = <optimized out>
        pd = 0x7ffa148ae700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140712063198976, -7645394537259902005, 0, 140725708074319, 3, 140725708075312, 7643227838868970443, 7643305568608934859}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0x00007ffa31b7be5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7ffa1d1f4700 (LWP 2195)):
#0  0x00007ffa31b72dcd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007ffa3209e39c in g_main_context_iterate (priority=2147483647, n_fds=2, fds=0x7ffa180008e0, timeout=<optimized out>, context=0x25d4870) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:4135
        poll_func = 0x7ffa320ad290 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x7ffa180008e0
#2  0x00007ffa3209e39c in g_main_context_iterate (context=context@entry=0x25d4870, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3835
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = 2
        fds = 0x7ffa180008e0
#3  0x00007ffa3209e4ac in g_main_context_iteration (context=0x25d4870, may_block=may_block@entry=1) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3901
        retval = <optimized out>
#4  0x00007ffa3209e4e9 in glib_worker_main (data=<optimized out>) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:5672
#5  0x00007ffa320c4bc5 in g_thread_proxy (data=0x25d5000) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gthread.c:780
        thread = 0x25d5000
#6  0x00007ffa31e3e464 in start_thread (arg=0x7ffa1d1f4700) at pthread_create.c:334
        __res = <optimized out>
        pd = 0x7ffa1d1f4700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140712207140608, -7645394537259902005, 0, 140725708074383, 3, 0, 7643206781718059979, 7643305568608934859}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#7  0x00007ffa31b7be5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7ffa34f79a80 (LWP 2194)):
#0  0x00007ffa31ac6458 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
        resultvar = 0
        pid = 2194
        selftid = 2194
#1  0x00007ffa31ac78da in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7ffa31e32540 <_IO_2_1_stderr_>, sa_sigaction = 0x7ffa31e32540 <_IO_2_1_stderr_>}, sa_mask = {__val = {81908976, 1, 140712606195824, 140712555521344, 26, 26, 140712552197238, 140712555521344, 158060176, 26, 158060176, 158060160, 158060160, 4294967295, 0, 140712555518768}}, sa_flags = 81908976, sa_restorer = 0x7ffa34f79a00}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007ffa33a2487d in meta_bug (format=format@entry=0x7ffa33a6c438 "No such frame window 0x%lx!\n") at core/util.c:436
Python Exception <class 'gdb.error'> Attempt to dereference a generic pointer.: 
#3  0x00007ffa33a0a759 in get_window (xdisplay=xdisplay@entry=0x3c194b0, frame_xwindow=0) at core/core.c:58
        display = <optimized out>
        window = <optimized out>
#4  0x00007ffa33a0aa52 in meta_core_begin_grab_op (xdisplay=0x3c194b0, frame_xwindow=<optimized out>, op=op@entry=META_GRAB_OP_WINDOW_BASE, pointer_already_grabbed=pointer_already_grabbed@entry=0, frame_action=frame_action@entry=1, button=0, modmask=0, timestamp=0, root_x=761, root_y=51) at core/core.c:220
        window = <optimized out>
        display = <optimized out>
        screen = <optimized out>
        __func__ = "meta_core_begin_grab_op"
#5  0x00007ffa33a33574 in meta_ui_frame_handle_event (time=0, frames=0x3f3a2d0 [MetaFrames]) at ui/frames.c:918
        display = <optimized out>
        op = META_GRAB_OP_WINDOW_BASE
        frames = 0x3f3a2d0 [MetaFrames]
        control = <optimized out>
#6  0x00007ffa33a33574 in meta_ui_frame_handle_event (event=0x1, frame=<optimized out>) at ui/frames.c:1282
        frames = 0x3f3a2d0 [MetaFrames]
        control = <optimized out>
#7  0x00007ffa33a33574 in meta_ui_frame_handle_event (frame=<optimized out>, event=event@entry=0xa5d3360) at ui/frames.c:1528
#8  0x00007ffa33a2f03a in meta_window_handle_ungrabbed_event (window=window@entry=0x71ad380 [MetaWindowX11], event=event@entry=0xa5d3360) at core/window.c:7702
        display = 0x3d24000 [MetaDisplay]
        unmodified = <optimized out>
        is_window_grab = <optimized out>
        grab_mods = <optimized out>
        event_mods = <optimized out>
        x = 2.80259693e-45
        y = 0
        button = <optimized out>
#9  0x00007ffa33a11503 in event_callback (event=0xa5d3360, display=0x3d24000 [MetaDisplay]) at core/events.c:303
        bypass_clutter = 1
        bypass_wayland = 0
        tracker = <optimized out>
        sequence = <optimized out>
        source = <optimized out>
        compositor = 0x0
        display = 0x3d24000 [MetaDisplay]
#10 0x00007ffa33a11503 in event_callback (event=0xa5d3360, data=0x3d24000) at core/events.c:363
        display = 0x3d24000 [MetaDisplay]
#11 0x00007ffa32ddc2ad in _clutter_event_process_filters (event=event@entry=0xa5d3360) at clutter-event.c:1802
        event_filter = <optimized out>
        context = <optimized out>
        l = <optimized out>
        next = 0x0
#12 0x00007ffa32dee16b in _clutter_process_event (device=0x3bbe0d0 [ClutterInputDeviceXI2], event=0xa5d3360) at clutter-main.c:2044
        context = 0x25d65a0
        actor = <optimized out>
        x = 121
        y = 82
        device = 0x3bbe0d0 [ClutterInputDeviceXI2]
        context = 0x25d65a0
        stage = <optimized out>
#13 0x00007ffa32dee16b in _clutter_process_event (context=0x25d65a0, event=0xa5d3360, stage=<optimized out>) at clutter-main.c:2401
        actor = <optimized out>
        x = 121
        y = 82
        device = 0x3bbe0d0 [ClutterInputDeviceXI2]
        context = 0x25d65a0
        stage = <optimized out>
#14 0x00007ffa32dee16b in _clutter_process_event (event=event@entry=0xa5d3360) at clutter-main.c:2561
        context = 0x25d65a0
        stage = <optimized out>
#15 0x00007ffa32e04959 in _clutter_stage_process_queued_events (stage=0x3bd4300 [MetaStage]) at clutter-stage.c:1031
        next_event = 0x0
        device = <optimized out>
        event = 0xa5d3360
        next_device = 0x0
        check_device = 0
        priv = 0x3bd3d00
        events = 0xa3a8520
        l = 0xa3a8520
        __func__ = "_clutter_stage_process_queued_events"
#16 0x00007ffa32df03e9 in clutter_clock_dispatch (master_clock=0x408e2c0 [ClutterMasterClockDefault], stages=<optimized out>) at clutter-master-clock-default.c:364
        l = 0x9616170
        clock_source = <optimized out>
        master_clock = 0x408e2c0 [ClutterMasterClockDefault]
        stages_updated = 0
#17 0x00007ffa32df03e9 in clutter_clock_dispatch (source=<optimized out>, callback=<optimized out>, user_data=<optimized out>) at clutter-master-clock-default.c:561
        clock_source = <optimized out>
        master_clock = 0x408e2c0 [ClutterMasterClockDefault]
        stages_updated = 0
#18 0x00007ffa3209e1a7 in g_main_context_dispatch (context=0x25d4de0) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3154
        dispatch = 0x7ffa32df0330 <clutter_clock_dispatch>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x0
        callback = 0x0
        cb_funcs = <optimized out>
        cb_data = <optimized out>
        need_destroy = <optimized out>
        source = 0x3f51400
        current = 0x2798a40
        i = 0
#19 0x00007ffa3209e1a7 in g_main_context_dispatch (context=context@entry=0x25d4de0) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3769
#20 0x00007ffa3209e400 in g_main_context_iterate (context=0x25d4de0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:3840
        max_priority = 2147483647
        timeout = 3
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = 18
        fds = 0xa424f60
#21 0x00007ffa3209e722 in g_main_loop_run (loop=0x3c14fc0) at /build/glib2.0-wnDt2X/glib2.0-2.48.1/./glib/gmain.c:4034
        __func__ = "g_main_loop_run"
#22 0x00007ffa33a1809c in meta_run () at core/main.c:537
#23 0x0000000000402197 in main (argc=1, argv=0x7ffd41d734d8) at main.c:471
        ctx = <optimized out>
        error = 0x0
        ecode = <optimized out>
        sender = 0x3c5ee40 [TpDebugSender]
