#0  0x00007fa79327a2db in ?? () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007fa791cadde1 in memcpy_blt (src=0x7fa78dc3f000, dst=0x7fa787589000, bpp=4, src_stride=6400, dst_stride=6656, 
    src_x=0, src_y=0, dst_x=0, dst_y=0, width=1600, height=900)
    at /var/tmp/portage/x11-drivers/xf86-video-intel-2.20.19/work/xf86-video-intel-2.20.19/src/sna/blt.c:208
        src_bytes = 0x7fa78dc3f000 "\037\037\037"
        dst_bytes = 0x7fa787589000 <Address 0x7fa787589000 out of bounds>
        byte_width = 6400
#2  0x00007fa791cc1e0c in sna_put_zpixmap_blt (drawable=0x185e360, gc=0x185dde0, region=0x7fff11f3b530, x=0, y=0, w=1600, 
    h=900, bits=0x7fa78dc3f000 "\037\037\037", stride=6400)
    at /var/tmp/portage/x11-drivers/xf86-video-intel-2.20.19/work/xf86-video-intel-2.20.19/src/sna/sna_accel.c:3450
        pixmap = 0xfea5a0
        box = 0x7fff11f3b530
        dx = 0
        dy = 0
        n = 1
#3  0x00007fa791cc2ede in sna_put_image (drawable=0x185e360, gc=0x185dde0, depth=24, x=0, y=0, w=1600, h=900, left=0, 
    format=2, bits=0x7fa78dc3f000 "\037\037\037")
    at /var/tmp/portage/x11-drivers/xf86-video-intel-2.20.19/work/xf86-video-intel-2.20.19/src/sna/sna_accel.c:3795
        pixmap = 0xfea5a0
        sna = 0x7fa7950b3010
        priv = 0xfea630
        region = {extents = {x1 = 0, y1 = 0, x2 = 1600, y2 = 900}, data = 0x0}
        dx = 0
        dy = 0
#4  0x000000000056f551 in damagePutImage (pDrawable=0x185e360, pGC=0x185dde0, depth=24, x=0, y=0, w=1600, h=900, leftPad=0, 
    format=2, pImage=0x7fa78dc3f000 "\037\037\037")
    at /var/tmp/portage/x11-base/xorg-server-1.13.1.901-r9999/work/xorg-server-1.13.1.901/miext/damage/damage.c:792
        pGCPriv = 0x185dec8
        oldFuncs = 0x8a3880 <damageGCFuncs>
#5  0x000000000051b24d in ProcShmPutImage (client=0x1834780)
    at /var/tmp/portage/x11-base/xorg-server-1.13.1.901-r9999/work/xorg-server-1.13.1.901/Xext/shm.c:584
        pGC = 0x185dde0
        pDraw = 0x185e360
        length = 6400
        shmdesc = 0x185dcd0
        stuff = 0x1834b58
#6  0x000000000051d2db in ProcShmDispatch (client=0x1834780)
    at /var/tmp/portage/x11-base/xorg-server-1.13.1.901-r9999/work/xorg-server-1.13.1.901/Xext/shm.c:1115
        stuff = 0x1834b58
#7  0x0000000000439882 in Dispatch ()
    at /var/tmp/portage/x11-base/xorg-server-1.13.1.901-r9999/work/xorg-server-1.13.1.901/dix/dispatch.c:428
        clientReady = 0x1135930
        result = 0
        client = 0x1834780
        nready = 0
        icheck = 0x8addd0 <checkForInput>
        start_tick = 1280
#8  0x000000000042a369 in main (argc=6, argv=0x7fff11f3b868, envp=0x7fff11f3b8a0)
    at /var/tmp/portage/x11-base/xorg-server-1.13.1.901-r9999/work/xorg-server-1.13.1.901/dix/main.c:295
        i = 1
        alwaysCheckForInput = {0, 1}
Undefined command: "exit".  Try "help".
A debugging session is active.

	Inferior 1 [process 16724] will be detached.

Quit anyway? (y or n) Detaching from program: /usr/bin/Xorg, process 16724