Kernel Redesigns AF_UNIX Garbage Collector to Plug Memory Leaks

AF_UNIX garbage collector solves a fundamental kernel memory challenge: inter-process socket transfers can leave sockets unreachable yet still resident in memory, consuming resources. The recent complete rewrite using graph-based algorithms represents a major architectural shift, but the subsystem continues to harbor subtle bugs like Use-After-Free, making deep understanding essential for kernel developers seeking memory-efficient system design.