#0  0x00007f63bcf9ed7d in memset () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007f63b8f455bb in memset (__len=<optimized out>, __ch=<optimized out>, __dest=<optimized out>)
    at /usr/include/bits/string3.h:84
No locals.
#2  _sna_pixmap_move_to_cpu (pixmap=pixmap@entry=0xfe4e20, flags=flags@entry=3) at sna_accel.c:2110
No locals.
#3  0x00007f63b8f48506 in sna_drawable_move_region_to_cpu (drawable=<optimized out>, 
    region=region@entry=0x7fffb3c7ad10, flags=flags@entry=3) at sna_accel.c:2479
        dx = <optimized out>
        dy = <optimized out>
#4  0x00007f63b8f63ee2 in sna_composite_fb (op=<optimized out>, src=src@entry=0x1080920, mask=mask@entry=0x0, 
    dst=dst@entry=0xf99c40, region=region@entry=0x7fffb3c7ad10, src_x=src_x@entry=0, src_y=src_y@entry=0, 
    msk_x=msk_x@entry=0, msk_y=msk_y@entry=0, dst_x=13, dst_y=dst_y@entry=0, width=width@entry=22, 
    height=height@entry=22) at sna_composite.c:519
        src_image = <optimized out>
        mask_image = <optimized out>
        dest_image = <optimized out>
        src_xoff = 0
        src_yoff = 0
        msk_xoff = 0
        msk_yoff = 0
        dst_xoff = -1278759648
        dst_yoff = 32767
        tx = 0
        ty = 0
        flags = 3
#5  0x00007f63b8f64651 in sna_composite (op=<optimized out>, src=<optimized out>, mask=0x0, dst=0xf99c40, 
    src_x=<optimized out>, src_y=<optimized out>, mask_x=0, mask_y=0, dst_x=13, dst_y=0, width=22, height=22)
    at sna_composite.c:742
        tmp = {blt = 0x0, box = 0x0, boxes = 0x0, thread_boxes = 0x0, done = 0x0, damage = 0x0, op = 0, dst = {
            pixmap = 0xfe4e20, format = 537036936, bo = 0x0, x = -1794, y = -1105, width = 48, height = 22}, src = {
            bo = 0x0, transform = 0x0, width = 0, height = 0, pict_format = 0, card_format = 0, filter = 0, 
            repeat = 0, is_affine = 0, is_solid = 0, is_linear = 0, is_opaque = 0, alpha_fixup = 0, rb_reversed = 0,            offset = {0, 0}, scale = {0, 0}, embedded_transform = {matrix = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}}, u = {
              linear = {dx = 0, dy = 0, offset = 0}, gen2 = {pixel = 0}, gen3 = {type = 0, mode = 0, constants = 0}}}, 
          mask = {bo = 0x0, transform = 0x0, width = 0, height = 0, pict_format = 0, card_format = 0, filter = 0, 
            repeat = 0, is_affine = 0, is_solid = 0, is_linear = 0, is_opaque = 0, alpha_fixup = 0, rb_reversed = 0, 
            offset = {0, 0}, scale = {0, 0}, embedded_transform = {matrix = {{0, 0, 0}, {0, 0, 0}, {0, 0, 0}}}, u = {
              linear = {dx = 0, dy = 0, offset = 0}, gen2 = {pixel = 0}, gen3 = {type = 0, mode = 0, constants = 0}}}, 
          is_affine = 0, has_component_alpha = 0, need_magic_ca_pass = 0, rb_reversed = 0, floats_per_vertex = 0, 
          floats_per_rect = 0, prim_emit = 0x0, emit_boxes = 0x0, redirect = {real_bo = 0x0, real_damage = 0x0, 
            damage = 0x0, box = {x1 = 0, y1 = 0, x2 = 0, y2 = 0}}, u = {blt = {src_pixmap = 0x0, sx = 0, sy = 0, 
              inplace = 0, overwrites = 0, bpp = 0, alu = 0, cmd = 0, br13 = 0, pitch = {0, 0}, pixel = 0, bo = {0x0, 
                0x0}}, gen3 = {constants = {0, 0, 0, 0, 0, 0, 0, 0}, num_constants = 0}, gen4 = {wm_kernel = 0, 
              ve_id = 0}, gen5 = {wm_kernel = 0, ve_id = 0}, gen6 = {flags = 0}, gen7 = {flags = 0}}, priv = 0x0}
        region = {extents = {x1 = 1807, y1 = 1105, x2 = 1829, y2 = 1127}, data = 0x0}
        dx = <optimized out>
        dy = <optimized out>
#6  0x0000000000511ec2 in damageComposite (op=<optimized out>, pSrc=0x1080920, pMask=0x0, pDst=0xf99c40, 
    xSrc=<optimized out>, ySrc=<optimized out>, xMask=0, yMask=0, xDst=13, yDst=0, width=22, height=22) at damage.c:563
        pScreen = <optimized out>
#7  0x000000000050b7ba in ProcRenderComposite (client=0xf787c0) at render.c:708
        pSrc = 0x1080920
        pMask = 0x0
        pDst = 0xf99c40
        stuff = 0x7f63af32f928
#8  0x000000000043cc3e in Dispatch () at dispatch.c:432
        clientReady = 0xd51230
        result = <optimized out>
        client = 0xf787c0
        nready = 0
        icheck = 0x817310 <checkForInput>
        start_tick = 260
#9  0x000000000042c1ba in main (argc=14, argv=0x7fffb3c7b1d8, envp=<optimized out>) at main.c:298
        i = <optimized out>
        alwaysCheckForInput = {0, 1}