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Fuzzing TIPC protocol implementation in Linux with Syzkaller

This post describes my first experience fuzzing the Linux kernel with syzkaller, in particular its implementation of a rather obscure protocol, TIPC. It was also a good opportunity to explore the kernel internals in bigger detail. While diving into the specification of the TIPC protocol, I carried out experiments in parallel by bringing up TIPC nodes on a local and a virtual machine to simulate a cluster whose nodes communicate via this protocol.