Worked on the KernelSU repository to enhance kernel process marking reliability in built-in mode, focusing on stability for containerized and privileged workloads. Addressed a critical edge case by refining the logic to ensure that pid 1 is always marked before transitioning to init, and implemented safeguards to prevent unmarking when the execution path is unreadable. This C programming and kernel development effort reduced the risk of incorrect process states, strengthening the security and correctness of process lifecycle management. The work featured clear commit messaging, targeted changes with minimal surface area, and alignment with project standards and test coverage requirements.