It seems that Aditya Pakki was the one introducing shady code to the kernel and was caught. He is listed as an author on several other very similar papers (https://scholar.google.com/citations?user=O9WEZuoAAAAJ&hl=en) with authors Wu and Lu about automatically detecting "missing-check bugs" and other security issues which they purport to want to fix but this research paper explicitly discusses submitting "fixes" that have latent security bugs in them.