Assume the printk("You're root now") had not been there. Would that increase your estimate for the probability of an intentional backdoor, or reduce it?
"To Minsk," says the second.
"To Minsk, eh? What a nerve you have! I know you're telling me you're going to Minsk because you want me to think that you're really going to Pinsk. But it so happens that I know you really are going to Minsk. So why are you lying to me?"