fs_dprintf
fs_dprintf(("<4> found base\n"));
fs_dprintf(("<5> fp = %p, kbase = %p, ktop - size = %p\n",
fs_dprintf(("<6> frame = %p\n", frame));
fs_dprintf(("<7> fpp = %p\n", fpp));
fs_dprintf(("<8> levels = %d\n", levels));
fs_dprintf(("<0> frame = %p, kbase = %p, ktop = %p, ubase = %p\n",
fs_dprintf(("<1> fpp = %p, frame = %p\n", fpp, frame));
fs_dprintf(("<2> fp = %p\n", fp));
fs_dprintf(("<3> not at base\n"));