As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKY HAZE FROM AFT CABIN AFTER TAKEOFF. SMOKE TOILET MSG ILLUMINATED AND EXTINGUISHED BEFORE LANDING. REMOVED EXCESS ENGINE OIL FROM L/H & R/H ENGINE OIL TANKS IAW CRJ200 AMM. C/W OPS CHECK OF L/H & R/H AIR CONDITIONING SYSTEM IAW CRJ200 AMM. CABIN & COCKPIT CLEAR OF ALL SMOKE SMELL.