cr_specdata2
rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
MINOR(rdev) != create->cr_specdata2)
rdev = MKDEV(create->cr_specdata1, create->cr_specdata2);
MINOR(rdev) != create->cr_specdata2)
if (xdr_stream_decode_u32(argp->xdr, &create->cr_specdata2) < 0)