Program received signal SIGINT, Interrupt.
0xffffe410 in __kernel_vsyscall ()
(gdb) bt
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xa7e55399 in ioctl () from /lib/tls/i686/cmov/libc.so.6
#2  0x080e7f70 in xf86ioctl ()
#3  0xa7cc5a62 in drmCommandNone () from /usr/lib/xorg/modules/linux/libdrm.so
#4  0xa798f19a in RADEONWaitForIdleCP ()
   from /usr/lib/xorg/modules/drivers/radeon_drv.so
#5  0xa77dc275 in XAAPaintWindow () from /usr/lib/xorg/modules/libxaa.so
#6  0x081562ef in DamageDestroy ()
#7  0x08107563 in miWindowExposures ()
#8  0xa7ccc0b9 in DRIWindowExposures ()
   from /usr/lib/xorg/modules/extensions/libdri.so
#9  0x080ca3f3 in xf86XVScreenInit ()
#10 0x081200f7 in miHandleValidateExposures ()
#11 0x0812042c in miMoveWindow ()
#12 0x08073798 in ConfigureWindow ()
#13 0x08080531 in ProcConfigureWindow ()
#14 0x08087828 in Dispatch ()
#15 0x0806e316 in main ()
(gdb)