Hazard pointer series fixes race, draws Linus on ptr_eq
Mathieu Desnoyers posts hazptr updates with a try-acquire fast path; Torvalds rejects hiding pointer values to preserve address dependencies.
By kexec#synchronization
Kernel reverts IRQ guard switch after Syzbot finds nested lock hazards
Refcounted interrupt disable lands for safer nesting and Rust SpinLockIrq, but wiring it into scoped cleanup guards is rolled back until stronger tooling exists.
By kexec