Fix page fault trap in TX path.  Though TX path is still not working sane, resulting in watchdog timeout.
Fix page fault trap in TX path.  Though TX path is still not working
sane, resulting in watchdog timeout.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars