[$] Progress on defeating lifetime-end pointer zapping

Paul McKenney gave a remote presentation at

Kangrejos 2025 following up on the
talk he gave last year about the
lifetime-end-pointer-zapping problem: certain common patterns for multithreaded code are
technically undefined behavior, and changes to the C and C++ specifications
will be needed to correct that. Those changes could also impact code that uses
unsafe Rust, such as the kernel's Rust bindings. Progress on the problem has been slow,
but McKenney believes that a solution is near at hand.