0x000000020bf3ad7a in select () from /usr/lib/libc.so.60.1
(gdb) c
Continuing.

Program received signal SIGSEGV, Segmentation fault.
0x00000002206b7b61 in intelDRI2Invalidate (drawable=0x2088e6f00)
    at /usr/xenocara/lib/libGL/dri/i965/../../../../dist/Mesa/src/mesa/drivers/dri/intel/intel_screen.c:12
2
122        intel->using_dri2_swapbuffers = GL_TRUE;
(gdb) bt
#0  0x00000002206b7b61 in intelDRI2Invalidate (drawable=0x2088e6f00)
    at /usr/xenocara/lib/libGL/dri/i965/../../../../dist/Mesa/src/mesa/drivers/dri/intel/intel_screen.c:12
2
#1  0x0000000208e4d4f5 in __glXDRIinvalidateBuffers (pDraw=0x209e01400, priv=0x2088e6c00)
    at /usr/xenocara/xserver/glx/glxdri2.c:439
#2  0x0000000200cbddee in DRI2InvalidateDrawable (pDraw=0x209e01400)
    at /usr/xenocara/xserver/hw/xfree86/dri2/dri2.c:538
#3  0x0000000200cbee2a in DRI2ConfigNotify (pWin=0x209e01400, x=0, y=0, w=800, h=600, bw=0,
    pSib=0x209e01c00) at /usr/xenocara/xserver/hw/xfree86/dri2/dri2.c:1058
#4  0x00000000004e1039 in compConfigNotify (pWin=0x209e01400, x=0, y=0, w=800, h=600, bw=0,
    pSib=0x209e01c00) at /usr/xenocara/xserver/composite/compwindow.c:773
#5  0x000000000047a859 in ConfigureWindow (pWin=0x209e01400, mask=12, vlist=0x20936400c,
    client=0x221687600) at /usr/xenocara/xserver/dix/window.c:2279
#6  0x0000000000434c8b in ProcConfigureWindow (client=0x221687600)
    at /usr/xenocara/xserver/dix/dispatch.c:876
#7  0x0000000000433b66 in Dispatch () at /usr/xenocara/xserver/dix/dispatch.c:432
#8  0x000000000042c1cf in main (argc=4, argv=0x7f7ffffcd5e0, envp=0x7f7ffffcd608)
    at /usr/xenocara/xserver/dix/main.c:291
(gdb)