ByteDance SYS Tech

Jul 21, 2023 · Fundamentals

How HWAddressSanitizer Leverages AArch64 TBI to Detect Memory Errors Efficiently

This article explains the principles behind HWAddressSanitizer (HWASAN), how it uses the AArch64 Top‑Byte‑Ignore hardware feature to provide lower‑overhead memory error detection than ASAN, and walks through practical examples, implementation details, and LLVM integration for C/C++ developers.