As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB OUT, CREW NOTICED A HAZE IN THE COCKPIT AND SMOKE IN THE CABIN. DONNED OXYGEN MASKS. RETURNED TO DEPARTURE. MX FOUND LEFT ENGING OIL PUMP TO BE AT FAULT. OIL PUMP WAS REPLACED WITH O/H UNIT AND A GROUND OPS CHECK WAS PERFORMED WITH NO DEFECTS NOTED AND ACFT RETURNED TO SERVICE.