Worked on improving the stability and correctness of sticky-domain scheduling decisions in the sched-ext/scx repository, focusing on kernel-level logic using C and BPF. Addressed a critical bug in the test_cpu_stickable path by correcting an array index mismatch, ensuring accurate handling of domain IDs and preventing potential desynchronization during CPU affinity operations. The solution involved targeted changes with a minimal blast radius, adhering to code review and test coverage standards. This work enhanced the reliability of low-level scheduling mechanisms without introducing new user-facing features, demonstrating careful maintenance and validation of complex kernel scheduling code in a production environment.