(gdb) where

#0  0xb7761424 in __kernel_vsyscall ()
#1  0xb6cd375e in poll () from /lib/libc.so.6
#2  0xb6ddcbd7 in g_poll (fds=0x8e86590, nfds=15, timeout=991) at gpoll.c:132
#3  0xb6dcef3a in g_main_context_poll (context=0x8b5a4b8, block=-1226978388, 
    dispatch=1, self=0x8b4f048) at gmain.c:3405
#4  g_main_context_iterate (context=0x8b5a4b8, block=-1226978388, dispatch=1, 
    self=0x8b4f048) at gmain.c:3087
#5  0xb6dcf66e in g_main_loop_run (loop=0x8b5b5a8) at gmain.c:3300
#6  0xb7618660 in meta_run () from /usr/lib/libmutter.so.0
#7  0x08049b14 in main ()

(gdb) t a a bt

Thread 6 (Thread 0xb4f8db70 (LWP 16497)):
#0  0xb7761424 in __kernel_vsyscall ()
#1  0xb6cd375e in poll () from /lib/libc.so.6
#2  0xb6ddcbd7 in g_poll (fds=0xb46004c0, nfds=1, timeout=-1) at gpoll.c:132
#3  0xb6dcef3a in g_main_context_poll (context=0x8bb2180, block=-1226978388, 
    dispatch=1, self=0x8bb5350) at gmain.c:3405
#4  g_main_context_iterate (context=0x8bb2180, block=-1226978388, dispatch=1, 
    self=0x8bb5350) at gmain.c:3087
#5  0xb6dcf66e in g_main_loop_run (loop=0xb46004b0) at gmain.c:3300
#6  0xb4f92334 in ?? () from /usr/lib/gio/modules/libdconfsettings.so
#7  0xb6df48af in g_thread_create_proxy (data=0x8bb5350) at gthread.c:1955
#8  0xb6d7ac77 in start_thread () from /lib/libpthread.so.0
#9  0xb6cddc6e in clone () from /lib/libc.so.6

Thread 5 (Thread 0xb45ffb70 (LWP 16498)):
#0  0xb7761424 in __kernel_vsyscall ()
#1  0xb6cd375e in poll () from /lib/libc.so.6
#2  0xb6ddcbd7 in g_poll (fds=0x8ffe0b0, nfds=5, timeout=-1) at gpoll.c:132
#3  0xb6dcef3a in g_main_context_poll (context=0x8c9bc80, block=-1226978388, 
    dispatch=1, self=0x8c9bd10) at gmain.c:3405
#4  g_main_context_iterate (context=0x8c9bc80, block=-1226978388, dispatch=1, 
    self=0x8c9bd10) at gmain.c:3087
#5  0xb6dcf66e in g_main_loop_run (loop=0x8c9bc70) at gmain.c:3300
#6  0xb604941b in gdbus_shared_thread_func (data=0x0) at gdbusprivate.c:276
#7  0xb6df48af in g_thread_create_proxy (data=0x8c9bd10) at gthread.c:1955
#8  0xb6d7ac77 in start_thread () from /lib/libpthread.so.0
#9  0xb6cddc6e in clone () from /lib/libc.so.6

Thread 4 (Thread 0xafdfdb70 (LWP 16499)):
#0  0xb7761424 in __kernel_vsyscall ()
#1  0xb6cd375e in poll () from /lib/libc.so.6
#2  0xb5dd1e02 in ?? () from /usr/lib/libpulse.so.0
#3  0xb5dc0d29 in pa_mainloop_poll () from /usr/lib/libpulse.so.0
#4  0xb5dc1514 in pa_mainloop_iterate () from /usr/lib/libpulse.so.0
#5  0xb5dc15f4 in pa_mainloop_run () from /usr/lib/libpulse.so.0
#6  0xb5dd1da3 in ?? () from /usr/lib/libpulse.so.0
#7  0xb59f7555 in ?? () from /usr/lib/libpulsecommon-0.9.22.so
#8  0xb6d7ac77 in start_thread () from /lib/libpthread.so.0
#9  0xb6cddc6e in clone () from /lib/libc.so.6

Thread 3 (Thread 0xaf5dcb70 (LWP 16500)):
#0  0xb7761424 in __kernel_vsyscall ()
#1  0xb6d7e82b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#2  0xb68a24fa in PR_WaitCondVar () from /usr/lib/libnspr4.so
#3  0xb695deda in ?? () from /usr/lib/xulrunner-2.0/libmozjs.so
#4  0xb68a8221 in ?? () from /usr/lib/libnspr4.so
#5  0xb6d7ac77 in start_thread () from /lib/libpthread.so.0
#6  0xb6cddc6e in clone () from /lib/libc.so.6

Thread 2 (Thread 0xa09edb70 (LWP 16572)):
#0  0xb7761424 in __kernel_vsyscall ()
#1  0xb6d8181b in read () from /lib/libpthread.so.0
#2  0xb6dd02d1 in child_watch_helper_thread (data=0x0) at gmain.c:4315
#3  0xb6df48af in g_thread_create_proxy (data=0x92e2f80) at gthread.c:1955
#4  0xb6d7ac77 in start_thread () from /lib/libpthread.so.0
#5  0xb6cddc6e in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb5745840 (LWP 16495)):
#0  0xb7761424 in __kernel_vsyscall ()
#1  0xb6cd375e in poll () from /lib/libc.so.6
#2  0xb6ddcbd7 in g_poll (fds=0x8e86590, nfds=15, timeout=991) at gpoll.c:132
#3  0xb6dcef3a in g_main_context_poll (context=0x8b5a4b8, block=-1226978388, 
    dispatch=1, self=0x8b4f048) at gmain.c:3405
#4  g_main_context_iterate (context=0x8b5a4b8, block=-1226978388, dispatch=1, 
    self=0x8b4f048) at gmain.c:3087
#5  0xb6dcf66e in g_main_loop_run (loop=0x8b5b5a8) at gmain.c:3300
#6  0xb7618660 in meta_run () from /usr/lib/libmutter.so.0
#7  0x08049b14 in main ()

(gdb) call gjs_dumpstack ()
$1 = 146078616