#0  0x00007fe73635820b in raise (sig=11) at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:37
        resultvar = 0
        pid = <optimized out>
#1  0x00007fe731baadb0 in ?? () from /usr/lib/firefox/libxul.so
No symbol table info available.
#2  <signal handler called>
No locals.
#3  0x00007fe7345960ea in mozalloc_abort(char const*) () from /usr/lib/firefox/libmozalloc.so
No symbol table info available.
#4  0x00007fe7329d7b04 in NS_DebugBreak () from /usr/lib/firefox/libxul.so
No symbol table info available.
#5  0x00007fe731b9fbd2 in ?? () from /usr/lib/firefox/libxul.so
No symbol table info available.
#6  0x00007fe72e30554b in _XError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#7  0x00007fe72e3025e7 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#8  0x00007fe72e302695 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#9  0x00007fe72e302fc5 in _XEventsQueued () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#10 0x00007fe72e2f512d in XPending () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#11 0x00007fe72f1df5c6 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0
No symbol table info available.
#12 0x00007fe7305333dd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#13 0x00007fe730533c53 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#14 0x00007fe730533e3c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#15 0x00007fe7325e9caa in ?? () from /usr/lib/firefox/libxul.so
No symbol table info available.
#16 0x00007fe7326148db in ?? () from /usr/lib/firefox/libxul.so
No symbol table info available.
#17 0x00007fe7326149a2 in ?? () from /usr/lib/firefox/libxul.so
No symbol table info available.
#18 0x00007fe7329ce1d9 in ?? () from /usr/lib/firefox/libxul.so
No symbol table info available.
#19 0x00007fe7329a0a60 in ?? () from /usr/lib/firefox/libxul.so
No symbol table info available.
#20 0x00007fe732689a96 in ?? () from /usr/lib/firefox/libxul.so
No symbol table info available.
#21 0x00007fe7329f3a23 in ?? () from /usr/lib/firefox/libxul.so
No symbol table info available.
#22 0x00007fe732613f13 in ?? () from /usr/lib/firefox/libxul.so
No symbol table info available.
#23 0x00007fe7324d7ea5 in ?? () from /usr/lib/firefox/libxul.so
No symbol table info available.
#24 0x00007fe731ba5e63 in ?? () from /usr/lib/firefox/libxul.so
No symbol table info available.
#25 0x00007fe731ba60db in ?? () from /usr/lib/firefox/libxul.so
No symbol table info available.
#26 0x00007fe731ba6337 in XRE_main () from /usr/lib/firefox/libxul.so
No symbol table info available.
#27 0x00007fe736f9e184 in _start ()
No symbol table info available.