Worked on the cmss13-devs/cmss13-pve repository to address reliability issues in concurrent map access, focusing on preventing data corruption during parallel reads. The primary contribution involved fixing a concurrency bug in DM that caused incorrect results when multiple readers accessed the same map. By resetting the starting position of the regex search for each concurrent read, the solution ensured that data integrity was maintained under parallel operations. This bug fix improved code stability and production reliability, directly addressing a traceable issue. The work demonstrated skills in bug fixing and concurrency, with an emphasis on robust data handling in a multi-threaded environment.