What are the grounds for a writ of habeas corpus for a second-degree murder?

Petitioner filed the instant petition for a writ of habeas corpus on October 21, 2019. ECF No. 1 at 8. As with his fifth petition, he lists as grounds for the writ that California's second-degree murder statute is unconstitutionally "vague and divisive." Id. at 5. Petitioner's factual and legal arguments, however, variously contend that he is factually innocent of second-degree murder, that he was coerced into pleading guilty, that the plea agreement to which he agreed is invalid, that California has violated his plea agreement, that his conviction constituted a double jeopardy violation, and that a new constitutional right announced in Johnson v. United States, 576 U.S. 491 (2015) extends the time to file a petition. Id. at 9-19.