(gdb) bt full
#0  0x284c9b44 in kill () from /usr/lib/libc.so.7
No symbol table info available.
#1  0x2853dd28 in raise () from /usr/lib/libc.so.7
No symbol table info available.
#2  0x2853d652 in abort () from /usr/lib/libc.so.7
No symbol table info available.
#3  0x0809c939 in ddxGiveUp ()
No symbol table info available.
#4  0x0811acdc in AbortServer ()
No symbol table info available.
#5  0x0811b20b in FatalError ()
No symbol table info available.
#6  0x080b1c91 in xf86SigHandler ()
No symbol table info available.
#7  <signal handler called>
No symbol table info available.
#8  0x00000000 in ?? ()
No symbol table info available.
#9  0x287eaa8b in i965_prepare_composite (op=3, pSrcPicture=0x289a5ad8, pMaskPicture=0x289a5df0, pDstPicture=0x289a5e48, pSrc=0x3c700400,
    pMask=0x3c321500, pDst=0x285d0910) at i965_render.c:1350
        pScrn = (ScrnInfoPtr) 0x285a0980
        pI830 = (I830Ptr) 0x28700100
        render_state = (struct gen4_render_state *) 0x38a50100
        composite_op = (gen4_composite_op *) 0x38a50938
        binding_table = (uint32_t *) 0x2859fe90
        binding_table_bo = (drm_intel_bo *) 0x38a4f708
        surface_state_bo = <value optimized out>
#10 0x28999eb4 in exaTryDriverComposite (op=3 '\003', pSrc=0x289a5ad8, pMask=0x289a5df0, pDst=0x289a5e48, xSrc=0, ySrc=0, xMask=0,
    yMask=0, xDst=143, yDst=240, width=47, height=48) at exa_render.c:670
        region = {extents = {x1 = 143, y1 = 240, x2 = 190, y2 = 288}, data = 0x0}
        pbox = <value optimized out>
        nbox = <value optimized out>
        src_off_x = <value optimized out>
        src_off_y = <value optimized out>
        mask_off_x = <value optimized out>
        mask_off_y = <value optimized out>
        dst_off_x = 0
        dst_off_y = 0
        pSrcPix = (PixmapPtr) 0x3c700400
        pMaskPix = (PixmapPtr) 0x3c321500
        pDstPix = (PixmapPtr) 0x285d0910
        pMaskExaPix = <value optimized out>
        scratch = {drawable = {type = 104 'h', class = 245 'õ', depth = 191 '¿', bitsPerPixel = 191 '¿', id = 134653110, x = -11668,
    y = 10393, width = 2344, height = 10333, pScreen = 0xbfbff588, serialNumber = 681132075}, devPrivates = 0x285d0928,
  refcnt = 681170252, devKind = -1077938808, devPrivate = {ptr = 0x2899328f, val = 681128591, uval = 681128591,
    fptr = 0x2899328f <exaGetPixmapDriverPrivate+39>}, screen_x = 2344, screen_y = 10333, usage_hint = 681170252}
        pixmaps = {{as_dst = 1, as_src = 1, pPix = 0x285d0910, pReg = 0x0}, {as_dst = 0, as_src = 1, pPix = 0x3c700400, pReg = 0x0}, {
    as_dst = 0, as_src = 1, pPix = 0x3c321500, pReg = 0x0}}
#11 0x2899a7b0 in exaComposite (op=3 '\003', pSrc=0x289a5ad8, pMask=0x289a5df0, pDst=0x289a5e48, xSrc=3280, ySrc=-16449, xMask=0, yMask=0,
    xDst=10346, yDst=<value optimized out>, width=47, height=48) at exa_render.c:935
        isSrcSolid = <value optimized out>
        pExaScr = (ExaScreenPrivPtr) 0x38a20080
        ret = <value optimized out>
        saveSrcRepeat = 0
        saveMaskRepeat = 0
        region = {extents = {x1 = -23370, y1 = 2054, x2 = 13308, y2 = 10399}, data = 0x0}
#12 0x081555a5 in ?? ()
No symbol table info available.
#13 0x081467dc in CompositePicture ()
No symbol table info available.
#14 0x0814bc71 in ?? ()
No symbol table info available.
#15 0x0814901c in ?? ()
No symbol table info available.
#16 0x080816c0 in Dispatch ()
No symbol table info available.
#17 0x08069b7c in main ()
No symbol table info available.
(gdb)