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Shadow Memory

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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.

Aarch64AddressSanitizerHWASAN

0 likes · 29 min read

How HWAddressSanitizer Leverages AArch64 TBI to Detect Memory Errors Efficiently

OPPO Kernel Craftsman

Nov 13, 2020 · Information Security

Understanding KASAN: Principles and Usage in the Linux Kernel

KASAN, the Kernel Address Sanitizer, is a built‑in Linux kernel tool that uses shadow memory to mark each 8‑byte block’s accessibility, enabling detection of out‑of‑bounds and use‑after‑free errors while consuming about one‑eighth of RAM and requiring kernel configuration changes to activate.

KASANLinux kernelMemory Debugging

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Understanding KASAN: Principles and Usage in the Linux Kernel