Reading symbols from /usr/local/bin/glxgears...done.
[New process 1]
[New process 2]
[New process 3]
Core was generated by `glxgears'.
Program terminated with signal 11, Segmentation fault.
#0  0x00000008008c6576 in ?? ()
(gdb) bt
#0  0x00000008008c6576 in ?? ()
#1  0x0000000801a5c072 in ?? ()
#2  0x0000000800c90230 in ?? ()
#3  0x00007fffffdfc068 in ?? ()
#4  0x00000002805cb263 in ?? ()
#5  0x0000000100000000 in ?? ()
#6  0x0000000800df0000 in ?? ()
#7  0x00007fffffdfc740 in ?? ()
#8  0x0000000000000023 in ?? ()
#9  0x0000000000000000 in ?? ()
(gdb)