As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE, THE FORWARD LAVATORY TOILET OVERFLOWED SPILLING FLUID INTO THE FIRST CLASS CABIN. AIRCRAFT DIVERTED TO DFW AND LANDED WITHOUT INCIDENT. THE FORWARD LAV WAS PLACED ON MEL AND THE FLUSH CONTROL UNIT LATER WAS REPLACED, OPERATIONAL CHECK OK.