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sui-core Bug Fixes
Open source contributions to the Sui validator
RustSui CoreValidator LogicConsensus
The Problem
Sui is critical infrastructure. Bugs in validators can cause network issues or security vulnerabilities.
The Solution
Deep code review and bug hunting in the sui-core repository. Found and reported 14 bugs across multiple subsystems.
Key Features
- 5 PRs submitted to MystenLabs/sui
- Epoch boundary vulnerability fixes
- Checkpoint building improvements
- Consensus handling corrections
- Pruning logic fixes
Architecture
The Sui validator is a complex Rust system with multiple subsystems: consensus, execution, checkpoint building, state sync, and pruning.
Challenges
- Understanding a large, complex Rust codebase
- Reproducing race conditions and edge cases
- Writing clear bug reports with reproduction steps
Lessons Learned
- Reading code is as important as writing it
- Edge cases often hide at system boundaries
- Open source contributions require patience and persistence
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