On 05/19/18 06:13, Matt Macy wrote: > va_start(ap, fmt); > - res = make_dev_credv(0, &dev, devsw, unit, cr, uid, gid, mode, fmt, ap); > + DBGSET(res, make_dev_credv(0, &dev, devsw, unit, cr, uid, gid, mode, fmt, ap)); Is the make_dev_credv() called stubbed for non-debug builds? --HPS