#0  __pthread_kill_implementation (no_tid=0, signo=11, threadid=140051790425472) at pthread_kill.c:44
        tid = 1026
        ret = 0
        pd = 0x7f605937ed80
        old_mask = {__val = {557, 558, 559, 140048415268576, 39, 140051890959420, 32, 32, 24, 140048415268576, 5789629584, 140051850201590, 140051858944144, 0, 94056941711840, 94056941709184}}
        ret = <optimized out>
        pd = <optimized out>
        old_mask = <optimized out>
        ret = <optimized out>
        tid = <optimized out>
        ret = <optimized out>
        resultvar = <optimized out>
        resultvar = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
        __futex = <optimized out>
        resultvar = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
        __futex = <optimized out>
        __private = <optimized out>
        __oldval = <optimized out>
        result = <optimized out>
#1  __pthread_kill_internal (signo=11, threadid=140051790425472) at pthread_kill.c:80
No locals.
#2  __GI___pthread_kill (threadid=140051790425472, signo=signo@entry=11) at pthread_kill.c:91
No locals.
#3  0x00007f605e434476 in __GI_raise (sig=11) at ../sysdeps/posix/raise.c:26
        ret = <optimized out>
#4  0x0000558b563665ba in ?? ()
No symbol table info available.
#5  <signal handler called>
No locals.
#6  0x00007f605e76b3da in ?? () from /lib/x86_64-linux-gnu/libmutter-8.so.0
No symbol table info available.
#7  0x00007f605e766c2a in ?? () from /lib/x86_64-linux-gnu/libmutter-8.so.0
No symbol table info available.
#8  0x00007f605e7738b2 in ?? () from /lib/x86_64-linux-gnu/libmutter-8.so.0
No symbol table info available.
#9  0x00007f605e0c05cd in cogl_onscreen_swap_buffers_with_damage () from /usr/lib/x86_64-linux-gnu/mutter-8/libmutter-cogl-8.so.0
No symbol table info available.
#10 0x00007f605e8f513f in ?? () from /usr/lib/x86_64-linux-gnu/mutter-8/libmutter-clutter-8.so.0
No symbol table info available.
#11 0x00007f605e8f5ab3 in ?? () from /usr/lib/x86_64-linux-gnu/mutter-8/libmutter-clutter-8.so.0
No symbol table info available.
#12 0x00007f605e7781fb in ?? () from /lib/x86_64-linux-gnu/libmutter-8.so.0
No symbol table info available.
#13 0x00007f605e8d96a0 in ?? () from /usr/lib/x86_64-linux-gnu/mutter-8/libmutter-clutter-8.so.0
No symbol table info available.
#14 0x00007f605e8a45ce in ?? () from /usr/lib/x86_64-linux-gnu/mutter-8/libmutter-clutter-8.so.0
No symbol table info available.
#15 0x00007f605f33fb0b in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#16 0x00007f605f393b98 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#17 0x00007f605f33f093 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#18 0x0000558b56365dc7 in ?? ()
No symbol table info available.
#19 0x00007f605e41bfd0 in __libc_start_call_main (main=main@entry=0x558b56365970, argc=argc@entry=1, argv=argv@entry=0x7ffcab294108) at ../sysdeps/nptl/libc_start_call_main.h:58
        self = <optimized out>
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -6020371009034298444, 140723180093704, 94056935217520, 0, 140051896970304, 6019639402157923252, 5959358475300068276}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#20 0x00007f605e41c07d in __libc_start_main_impl (main=0x558b56365970, argc=1, argv=0x7ffcab294108, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffcab2940f8) at ../csu/libc-start.c:409
No locals.
#21 0x0000558b56365fc5 in ?? ()
No symbol table info available.