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arXiv · 1802.09517

Memory Tagging and how it improves C/C++ memory safety

Kostya Serebryany·Evgenii Stepanov·Aleksey Shlyapnikov·Vlad Tsyrklevich·Dmitry Vyukov
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Abstract

Memory safety in C and C++ remains largely unresolved. A technique usually called "memory tagging" may dramatically improve the situation if implemented in hardware with reasonable overhead. This paper describes two existing implementations of memory tagging: one is the full hardware implementation in SPARC; the other is a partially hardware-assisted compiler-based tool for AArch64. We describe the basic idea, evaluate the two implementations, and explain how they improve memory safety. This paper is intended to initiate a wider discussion of memory tagging and to motivate the CPU and OS vendors to add support for it in the near future.

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Kostya Serebryany, Evgenii Stepanov, Aleksey Shlyapnikov, Vlad Tsyrklevich, Dmitry Vyukov. 2018-02-26. Memory Tagging and how it improves C/C++ memory safety. https://arxiv.org/abs/1802.09517

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