Worked on the containers/libkrun repository to address a critical issue affecting container environments, focusing on system stability and protocol compliance. Using Rust and leveraging kernel development expertise, implemented a bug fix that corrected the virtio filesystem’s used ring length reporting. Previously, the system reported a hard-coded value, which caused failures in FUSE protocol validation. The update ensures that the reported value now accurately reflects the actual number of bytes written, aligning the implementation with Linux kernel FUSE validation requirements. This targeted fix improved the reliability of filesystem operations in virtualized containers, demonstrating a methodical approach to system programming and protocol adherence.