#0  0xf77d7bd0 in __kernel_vsyscall ()
#1  0xf73ade66 in raise () from /usr/lib32/libc.so.6
#2  0xf73af4e7 in abort () from /usr/lib32/libc.so.6
#3  0xf73eb938 in __libc_message () from /usr/lib32/libc.so.6
#4  0xf73f1c57 in malloc_printerr () from /usr/lib32/libc.so.6
#5  0xf73f2411 in _int_free () from /usr/lib32/libc.so.6
#6  0xf6b367dc in ?? () from /usr/lib32/libGL.so.1
#7  0xf6b833bf in ?? () from /usr/lib32/libGL.so.1
#8  0xf6b8415f in ?? () from /usr/lib32/libGL.so.1
#9  0xf5fe9008 in ?? () from /usr/lib32/libnvidia-glcore.so.358.16
#10 0xf5fe97ba in ?? () from /usr/lib32/libnvidia-glcore.so.358.16
#11 0xf60f1c5b in ?? () from /usr/lib32/libnvidia-glcore.so.358.16
#12 0xf60f21db in ?? () from /usr/lib32/libnvidia-glcore.so.358.16
#13 0xf60ad721 in ?? () from /usr/lib32/libnvidia-glcore.so.358.16
#14 0xf6012729 in ?? () from /usr/lib32/libnvidia-glcore.so.358.16
#15 0xf5feb376 in ?? () from /usr/lib32/libnvidia-glcore.so.358.16
#16 0xf6b35170 in ?? () from /usr/lib32/libGL.so.1
#17 0xf6b640d6 in ?? () from /usr/lib32/libGL.so.1
#18 0xf6b57749 in glXMakeCurrent () from /usr/lib32/libGL.so.1
#19 0xef9edd9c in ?? () from /home/leonard/.local/share/Steam/ubuntu12_32/vgui2_s.so
#20 0xef9f00dc in ?? () from /home/leonard/.local/share/Steam/ubuntu12_32/vgui2_s.so
#21 0xef9ff3cd in ?? () from /home/leonard/.local/share/Steam/ubuntu12_32/vgui2_s.so
#22 0xf26c70fa in ?? () from /home/leonard/.local/share/Steam/ubuntu12_32/steamui.so
#23 0xf26d6eec in ?? () from /home/leonard/.local/share/Steam/ubuntu12_32/steamui.so
#24 0xf26d7ad9 in ?? () from /home/leonard/.local/share/Steam/ubuntu12_32/steamui.so
#25 0x565b7620 in RunSteam(int, char**, bool) ()
#26 0x5659f59e in ?? ()
#27 0xf739a497 in __libc_start_main () from /usr/lib32/libc.so.6
#28 0x565a1f05 in _start ()