Malcolm-Jamal Warner, known for his role on 'The Cosby Show,' has reportedly passed away at the age of 54.RELATED: Prayers Up! Murder Inc. Co-Founder Irv Gotti Passes Away At The Age Of 54More Details On The Reported Passing Of 'Cosby Show' Actor Malcolm-Jamal WarnerOn Monday, July 21, TMZ published an exclusive report asserting that Warner passed away at the age of 54. Furthermore, the outlet shared that a "reliable source" has alleged to the outlet that Warner passed due to an accidental drowning.