KDRV_CFG_MAXLEN
cfg = kmem_alloc(KDRV_CFG_MAXLEN, KM_SLEEP);
if ((rc = copyinstr((caddr_t)arg, cfg, KDRV_CFG_MAXLEN, &got)) != 0) {
kmem_free(cfg, KDRV_CFG_MAXLEN);
kmem_free(cfg, KDRV_CFG_MAXLEN);