.
Thread 7 (LWP 1280):
#0  0x00007fc12e7cc10d in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x00007fc12ecff9b6 in _g_main_create_unix_signal_watch () from /tmp/apport_sandbox_bsyJwC/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0xba4f654f48e14700 in ?? ()
No symbol table info available.
#3  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 6 (LWP 1335):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007fc120c546a0 in PR_WaitCondVar (cvar=0x559225003970, timeout=4294967295) at ptsynch.c:396
        rv = <optimized out>
        thred = 0x55922506cb50
#2  0x00007fc12a5dadb6 in js::SourceCompressorThread::compressorThread(void*) () from /tmp/apport_sandbox_bsyJwC/usr/lib/x86_64-linux-gnu/libmozjs-24.so.0
No symbol table info available.
#3  0x00007fc120c5a088 in _pt_root (arg=0x55922506cb50) at ptthread.c:216
        rv = <optimized out>
        thred = 0x55922506cb50
        detached = 0
        id = 140466760705792
        tid = 1335
#4  0x00007fc12ea9e70a in start_thread (arg=0x7fc0f75fe700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7fc0f75fe700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140466760705792, 1779554823094031050, 0, 140721894610159, 140466760706496, 140466760705792, -1786854754729962806, -1787820212540648758}, 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  0x00007fc12e7d80ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
No locals.
.
Thread 5 (LWP 1333):
#0  0x00007fc12e7cc10d in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x00007fc12ab467e1 in poll (__timeout=-1, __nfds=3, __fds=0x7fc0fc006c70) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
No locals.
#2  poll_func (ufds=0x7fc0fc006c70, nfds=3, timeout=-1, userdata=0x55922501b570) at pulse/thread-mainloop.c:69
        mutex = 0x55922501b570
#3  0x00007fc12ab37fb1 in pa_mainloop_poll (m=m@entry=0x559225027190) at pulse/mainloop.c:844
        __func__ = "pa_mainloop_poll"
        __PRETTY_FUNCTION__ = "pa_mainloop_poll"
#4  0x00007fc12ab3864e in pa_mainloop_iterate (m=0x559225027190, block=<optimized out>, retval=0x0) at pulse/mainloop.c:926
        r = 0
#5  0x00007fc12ab38700 in pa_mainloop_run (m=0x559225027190, retval=retval@entry=0x0) at pulse/mainloop.c:944
        r = <optimized out>
#6  0x00007fc12ab46729 in thread (userdata=0x559225091c10) at pulse/thread-mainloop.c:100
        m = 0x559225091c10
        mask = {__val = {18446744067267100671, 18446744073709551615 <repeats 15 times>}}
        prev_mask = {__val = {0, 17179869188, 0, 0, 140467185710848, 140467684834600, 0, 140466838309056, 140467185710744, 0, 140721894611311, 140467185711552, 140467185710848, 140467684860380, 0, 140467185707824}}
        sa = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {0, 5, 0, 0, 140467688278184, 140467185707824, 140467738868115, 0, 140467688330815, 0, 31, 140467185707648, 0, 0, 0, 94086174940176}}, sa_flags = 0, sa_restorer = 0x0}
#7  0x00007fc1210cd228 in internal_thread_func (userdata=0x559224fad390) at pulsecore/thread-posix.c:81
        t = 0x559224fad390
#8  0x00007fc12ea9e70a in start_thread (arg=0x7fc110b4f700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7fc110b4f700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140467185710848, 1779554823094031050, 0, 140721894611311, 140467185711552, 140467185710848, -1787895211094289718, -1787820212540648758}, 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  0x00007fc12e7d80ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
No locals.
.
Thread 4 (LWP 1303):
#0  0x00007fc12e7cc10d in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x00007fc12ecff9b6 in _g_main_create_unix_signal_watch () from /tmp/apport_sandbox_bsyJwC/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0xba4f654f48e14700 in ?? ()
No symbol table info available.
#3  0x0000559224ecd280 in ?? ()
No symbol table info available.
#4  0x0000559224ebcad0 in ?? ()
No symbol table info available.
#5  0x0000000000000001 in ?? ()
No symbol table info available.
#6  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 3 (LWP 1279):
#0  0x00007fc12e7cc10d in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x00007fc12ecff9b6 in _g_main_create_unix_signal_watch () from /tmp/apport_sandbox_bsyJwC/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0xba4f654f48e14700 in ?? ()
No symbol table info available.
#3  0x0000000000000000 in ?? ()
No symbol table info available.
.
Thread 2 (LWP 1334):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007fc120c546a0 in PR_WaitCondVar (cvar=0x559225017bb0, timeout=4294967295) at ptsynch.c:396
        rv = <optimized out>
        thred = 0x559224fd3530
#2  0x00007fc12a5679de in js::GCHelperThread::threadLoop() () from /tmp/apport_sandbox_bsyJwC/usr/lib/x86_64-linux-gnu/libmozjs-24.so.0
No symbol table info available.
#3  0x00007fc120c5a088 in _pt_root (arg=0x559224fd3530) at ptthread.c:216
        rv = <optimized out>
        thred = 0x559224fd3530
        detached = 0
        id = 140466769098496
        tid = 1334
#4  0x00007fc12ea9e70a in start_thread (arg=0x7fc0f7dff700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7fc0f7dff700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140466769098496, 1779554823094031050, 0, 140721894610127, 140466769099200, 140466769098496, -1786855854778461494, -1787820212540648758}, 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  0x00007fc12e7d80ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
No locals.
.
Thread 1 (LWP 1275):
#0  0x00007fc12ed05221 in g_log_default_handler () from /tmp/apport_sandbox_bsyJwC/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#1  0x00007fc1306d355c in ?? () from /tmp/apport_sandbox_bsyJwC/usr/lib/x86_64-linux-gnu/libmutter.so.0
No symbol table info available.
#2  0x0000000000000006 in ?? ()
No symbol table info available.
#3  0x0000559222e355de in default_log_handler (log_domain=0xba4f654f48e14700 <error: Cannot access memory at address 0xba4f654f48e14700>, log_level=627046208, message=0x5592255ff740 "Connection to xwayland lost", data=0x559224f45ad0) at main.c:313
        sender = 0x559224f45ad0
        now = {tv_sec = 1475340941, tv_usec = 453947}
#4  0x00007fc12ed06584 in g_log_writer_journald () from /tmp/apport_sandbox_bsyJwC/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
Backtrace stopped: previous frame inner to this frame (corrupt stack?)