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Learn about KRR, a novel kernel record-replay framework designed to efficiently capture and reproduce kernel failures in this 16-minute conference presentation from OSDI '25. Discover how researchers from SmartX and Purdue University developed a solution to address the challenges of diagnosing complex kernel bugs that are difficult to reproduce in deployment environments. Explore the innovative split-recorder design that employs both guest and host systems to jointly record kernel execution, significantly narrowing the scope compared to traditional whole-stack approaches. Examine performance benchmarks showing KRR's superior scalability up to 8 cores with only 1.52× to 2.79× slowdown compared to native execution, while traditional whole-VM record-replay systems suffer from 8.97× to 29.94× slowdown across workloads including kernel compilation, RocksDB, and Nginx. Review the practical validation results demonstrating KRR's effectiveness in reproducing 17 real-world Linux bugs across different versions, including 6 non-deterministic bugs and 5 high-risk CVEs, with successful recording and reproduction of all but one non-deterministic bug.
