.
Thread 7 (LWP 27948):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007fc4a78ac660 in PR_WaitCondVar (cvar=0x1c5c9a0, timeout=4294967295) at ptsynch.c:396
        rv = <optimized out>
        thred = 0x1cd1200
#2  0x00007fc4b0f76c76 in js::SourceCompressorThread::compressorThread(void*) () from /tmp/apport_sandbox_wCZuhr/usr/lib/x86_64-linux-gnu/libmozjs-24.so.0
No symbol table info available.
#3  0x00007fc4a78b1fe8 in _pt_root (arg=0x1cd1200) at ptthread.c:212
        rv = <optimized out>
        thred = 0x1cd1200
        detached = 0
        id = 140482055227136
        tid = 27948
#4  0x00007fc4b542f6fa in start_thread (arg=0x7fc486ffc700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7fc486ffc700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140482055227136, 7525828922714499302, 0, 140727619548559, 140482055227840, 1, -7496223474642179866, -7496110677883868954}, 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  0x00007fc4b51652dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 6 (LWP 27947):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007fc4a78ac660 in PR_WaitCondVar (cvar=0x1aa6230, timeout=4294967295) at ptsynch.c:396
        rv = <optimized out>
        thred = 0x1b55cf0
#2  0x00007fc4b0f0391e in js::GCHelperThread::threadLoop() () from /tmp/apport_sandbox_wCZuhr/usr/lib/x86_64-linux-gnu/libmozjs-24.so.0
No symbol table info available.
#3  0x00007fc4a78b1fe8 in _pt_root (arg=0x1b55cf0) at ptthread.c:212
        rv = <optimized out>
        thred = 0x1b55cf0
        detached = 0
        id = 140482063619840
        tid = 27947
#4  0x00007fc4b542f6fa in start_thread (arg=0x7fc4877fd700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7fc4877fd700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140482063619840, 7525828922714499302, 0, 140727619548527, 140482063620544, 1, -7496220175570425626, -7496110677883868954}, 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  0x00007fc4b51652dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 5 (LWP 27946):
#0  0x00007fc4b51595ad in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x00007fc4b14e28a1 in poll (__timeout=30000, __nfds=3, __fds=0x7fc480006c60) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
No locals.
#2  poll_func (ufds=0x7fc480006c60, nfds=3, timeout=30000, userdata=0x1aa9990) at pulse/thread-mainloop.c:69
        mutex = <optimized out>
#3  0x00007fc4b14d3e51 in pa_mainloop_poll (m=m@entry=0x1b1ce10) at pulse/mainloop.c:844
        __func__ = "pa_mainloop_poll"
        __PRETTY_FUNCTION__ = "pa_mainloop_poll"
#4  0x00007fc4b14d44ee in pa_mainloop_iterate (m=0x1b1ce10, block=<optimized out>, retval=0x0) at pulse/mainloop.c:926
        r = 0
#5  0x00007fc4b14d45a0 in pa_mainloop_run (m=0x1b1ce10, retval=retval@entry=0x0) at pulse/mainloop.c:944
        r = <optimized out>
#6  0x00007fc4b14e27e9 in thread (userdata=0x1b38590) at pulse/thread-mainloop.c:100
        m = 0x1b38590
        mask = {__val = {18446744067267100671, 18446744073709551615 <repeats 15 times>}}
        prev_mask = {__val = {0, 7311146993654312805, 0, 0, 140727619549727, 140482072013248, 140727619550720, 140481937803456, 140482072012440, 0, 140727619549727, 140482072013248, 140727619550720, 140482827918428, 0, 140482072009520}}
        sa = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {0, 5, 0, 0, 140482831358144, 140482072009520, 140482882082403, 0, 30, 140482072009472, 0, 31, 0, 0, 0, 28542352}}, sa_flags = 0, sa_restorer = 0x0}
#7  0x00007fc4a7d24178 in internal_thread_func (userdata=0x1cc21d0) at pulsecore/thread-posix.c:81
        t = 0x1cc21d0
#8  0x00007fc4b542f6fa in start_thread (arg=0x7fc487ffe700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7fc487ffe700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140482072012544, 7525828922714499302, 0, 140727619549727, 140482072013248, 140727619550720, -7496221274545182490, -7496110677883868954}, 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  0x00007fc4b51652dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 4 (LWP 27937):
#0  0x00007fc4b51595ad in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x00007fc4b568f31c in g_main_context_iterate.isra () from /tmp/apport_sandbox_wCZuhr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007fc4b568f6a2 in g_main_loop_run () from /tmp/apport_sandbox_wCZuhr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007fc4b5e9a816 in gdbus_shared_thread_func () from /tmp/apport_sandbox_wCZuhr/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x00007fc4b56b5b65 in g_thread_proxy () from /tmp/apport_sandbox_wCZuhr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007fc4b542f6fa in start_thread (arg=0x7fc49a046700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7fc49a046700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140482374297344, 7525828922714499302, 0, 140727619547327, 140482374298048, 27243904, -7496195947123037978, -7496110677883868954}, 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  0x00007fc4b51652dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 3 (LWP 27943):
#0  0x00007fc4b51595ad in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x00007fc4b568f31c in g_main_context_iterate.isra () from /tmp/apport_sandbox_wCZuhr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007fc4b568f42c in g_main_context_iteration () from /tmp/apport_sandbox_wCZuhr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007fc498e3f28d in ?? () from /tmp/apport_sandbox_wCZuhr/usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
No symbol table info available.
#4  0x00007fc4b56b5b65 in g_thread_proxy () from /tmp/apport_sandbox_wCZuhr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007fc4b542f6fa in start_thread (arg=0x7fc498e37700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7fc498e37700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140482355361536, 7525828922714499302, 0, 140727619548271, 140482355362240, 27334464, -7496192862799648538, -7496110677883868954}, 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  0x00007fc4b51652dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 2 (LWP 27934):
#0  0x00007fc4b51595ad in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x00007fc4b568f31c in g_main_context_iterate.isra () from /tmp/apport_sandbox_wCZuhr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007fc4b568f42c in g_main_context_iteration () from /tmp/apport_sandbox_wCZuhr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007fc4b568f469 in glib_worker_main () from /tmp/apport_sandbox_wCZuhr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007fc4b56b5b65 in g_thread_proxy () from /tmp/apport_sandbox_wCZuhr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007fc4b542f6fa in start_thread (arg=0x7fc4a0854700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7fc4a0854700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140482483406592, 7525828922714499302, 0, 140727619549839, 140482483407296, 0, -7496139864513828634, -7496110677883868954}, 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  0x00007fc4b51652dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.
.
Thread 1 (LWP 27931):
#0  0x00007fc4b70505c0 in meta_window_appears_focused () from /tmp/apport_sandbox_wCZuhr/usr/lib/libmutter.so.0
No symbol table info available.
#1  0x00007fc4b702f891 in meta_window_actor_get_paint_volume () from /tmp/apport_sandbox_wCZuhr/usr/lib/libmutter.so.0
No symbol table info available.
#2  0x00007fc4b6395f8a in _clutter_actor_get_paint_volume_mutable () from /tmp/apport_sandbox_wCZuhr/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
No symbol table info available.
#3  0x00007fc4b63c0095 in clutter_clone_get_paint_volume () from /tmp/apport_sandbox_wCZuhr/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
No symbol table info available.
#4  0x00007fc4b6395f8a in _clutter_actor_get_paint_volume_mutable () from /tmp/apport_sandbox_wCZuhr/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
No symbol table info available.
#5  0x00007fc4b63a9414 in _clutter_actor_finish_queue_redraw () from /tmp/apport_sandbox_wCZuhr/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
No symbol table info available.
#6  0x00007fc4b63f53ce in _clutter_stage_do_update () from /tmp/apport_sandbox_wCZuhr/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
No symbol table info available.
#7  0x00007fc4b63df199 in clutter_clock_dispatch () from /tmp/apport_sandbox_wCZuhr/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
No symbol table info available.
#8  0x00007fc4b568f127 in g_main_context_dispatch () from /tmp/apport_sandbox_wCZuhr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#9  0x00007fc4b568f380 in g_main_context_iterate.isra () from /tmp/apport_sandbox_wCZuhr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#10 0x00007fc4b568f6a2 in g_main_loop_run () from /tmp/apport_sandbox_wCZuhr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#11 0x00007fc4b704069c in meta_run () from /tmp/apport_sandbox_wCZuhr/usr/lib/libmutter.so.0
No symbol table info available.
#12 0x0000000000402197 in main ()
No symbol table info available.