During August 2025, Zaslonko contributed to the geerlingguy/linux repository by addressing a kernel-level issue affecting s390 systems under KASLR. He delivered a targeted fix in C that corrected the calculation of the kernel image’s end address in the startup debugging log, ensuring the memory range occupied by the kernel image is accurately reported during boot. This patch improved boot-time observability and reliability for s390 deployments, streamlining the debugging process for boot-related issues. Zaslonko’s work demonstrated proficiency in debugging, embedded systems, and kernel development, and enhanced the maintainability of startup logs in complex, architecture-specific Linux environments.