.
Thread 1 (Thread 4307):
#0  0x00cc6422 in __kernel_vsyscall ()
No symbol table info available.
#1  0x008884d1 in raise () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#2  0x0088b932 in abort () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#3  0x00881648 in __assert_fail () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.
#4  0x0024491d in _XRead () from /usr/lib/libX11.so.6
No symbol table info available.
#5  0x007de25d in ?? () from /usr/lib/libGL.so.1
No symbol table info available.
Backtrace stopped: previous frame inner to this frame (corrupt stack?)