As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5383 - BNA-STL - RETURNED TO FIELD FOR SMOKE IN THE CABIN AND COCKPIT ON CLIMB. CREW NOTICED E1 OIL TEMP AND OIL PRESSURE WENT INTO THE RED. DECLARED AN EMERGENCY AND PULLED C/B, DISCHARGED BAGGAGE COMPARTMENT FIRE BOTTLES AND USED PBE'S. MAINTENANCE PERFORMED GVI AND FOUND OIL PUDDLES IN THE TAIL CONE, GANG DRAIN SIGHT GLASS MELTED, OIL QUANTITY AT 2 QUARTS, COWLING SOAKED WITH OIL AND MULTIPLE CMC MESSAGE. MAINTENANCE REMOVED AND REPLACED NR 1 ENGINE.