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Tuesday, September 25 • 15:50 - 16:20
Memory Tagging and how it improves C++ memory safety

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Memory safety in C++ remains largely unresolved. A technique usually called "memory tagging" may dramatically improve the situation if implemented in hardware with reasonable overhead.

In this talk we will describe two existing implementations of memory tagging. One is SPARC ADI, a full hardware implementation. The other is HWASAN, 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. We'll pay extra attention to memory tagging as a security mitigation.

If you know what AddressSanitizer (ASAN) is, think of Memory Tagging as of "Low-overhead ASAN on steroids in hardware".

This talk is based on the paper Memory Tagging and how it improves C/C++ memory safety (https://arxiv.org/pdf/1802.09517.pdf).

Speakers
avatar for Kostya Serebryany

Kostya Serebryany

Software Engineer, Google
Konstantin (Kostya) Serebryany is a Software Engineer at Google. His team develops and deploys dynamic testing tools, such as AddressSanitizer and ThreadSanitizer. Prior to joining Google in 2007, Konstantin spent 4 years at Elbrus/MCST working for Sun compiler lab and then 3 years... Read More →


Tuesday September 25, 2018 15:50 - 16:20
C

Attendees (54)