All about ARM security extensions Pointer Authentication the concept of a pointer authentication code (PAC), which is stored in some upper bits of pointers Each PAC is derived from the original pointer, another 64-bit value (e.g. the stack pointer), and a secret 128-bit key PAC it up: Towards Pointer Integrity using ARM Pointer Authentication slide1 Background

Source https://github.com/google/sanitizers/wiki/AddressSanitizer What is ASan a LLVM Pass A run-time library that hooked memory operations(malloc/free/memset) Benefits(mostly compare to Static Analyze)