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HiFuzz uses hierarchical reinforcement learning for advanced CPU fuzzing

Researchers have developed HiFuzz, a novel framework utilizing hierarchical reinforcement learning to improve CPU fuzzing efficiency. This system employs a two-layer generation process, with a Program Agent managing global layout and a Basic Block Agent handling instruction filling. To address reward sparsity, HiFuzz incorporates an adaptive coverage reward mechanism and a semantic-aware basic block encoder for intrinsic feedback. Evaluations on RISC-V cores show HiFuzz surpasses current state-of-the-art fuzzers in both coverage and bug detection. AI

IMPACT Enhances CPU verification efficiency and bug detection capabilities through advanced AI techniques.

RANK_REASON The cluster contains a research paper detailing a new methodology for CPU fuzzing. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.LG →

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HiFuzz uses hierarchical reinforcement learning for advanced CPU fuzzing

COVERAGE [1]

  1. arXiv cs.LG TIER_1 English(EN) · Ya Wang, Hanwei Fan, Zhenguo Liu, Xiaofeng Zhou, Yangdi Lyu, Jiang Xu, Wei Zhang ·

    HiFuzz: Hierarchical Reinforcement Learning for Semantic-Aware and Adaptive CPU Fuzzing

    arXiv:2607.06619v1 Announce Type: cross Abstract: Modern processor verification struggles to reach deep architectural states due to the inefficiencies of traditional mutation-based fuzzing. We propose HiFuzz, a novel hierarchical reinforcement learning framework that replaces mut…