Program received signal SIGSEGV, Segmentation fault.
0x080ca296 in xf86PostButtonEvent (device=0x8289b60, is_absolute=0, button=1, 
    is_down=0, first_valuator=0, num_valuators=0) at xf86Xinput.c:509
509         if (DGAStealButtonEvent(index, button, is_down))
(gdb) bt
#0  0x080ca296 in xf86PostButtonEvent (device=0x8289b60, is_absolute=0, 
    button=1, is_down=0, first_valuator=0, num_valuators=0) at xf86Xinput.c:509
#1  0xb7e40676 in FlushButtons (pMse=0x82897b0) at mouse.c:1867
#2  0xb7e42d1b in MouseProc (device=0x8289b60, what=1) at mouse.c:1795
#3  0x08081cc2 in EnableDevice (dev=0x8289b60) at devices.c:152