On Mon, Feb 25, 2019 at 09:55:17AM -0800, Paul E. McKenney wrote: > But if you know of any code in the Linux kernel that needs to compare > pointers, one of which might be in the process of being freed, please > do point me at it. I'm having the utmost difficulty of understanding why that would be a problem. It's just a value. Freeing memory does not affect the actual memory or any pointers to it. *confusion* None of this makes any kind of sense.