Eminem wanted Mariah Carey to play his mother in his 2002 movie "8 Mile," but she was hesitant to take the role. Despite initially declining to speak with Eminem, Mariah eventually agreed to a call about the movie role. However, when Eminem revealed that he wanted her to play his mother, Mariah's insecurities kicked in, and she did not like the idea. The role eventually went to Kim Basinger, and the longstanding feud between Eminem and Mariah, which included public song releases aimed at each other, continued.
Source: https://www.eonline.com/news/1418601/eminem-wanted-mariah-carey-to-play-his-mother-in-8-mile