A university got itself banned from the Linux kernel (2021)

Summary

On the evening of April 6th, a student emailed a patch to a list of developers. Fifteen days later, the University of Minnesota was banned from contributing to the Linux kernel.“I suggest you find a different community to do experiments on,” wrote Linux Foundation fellow Greg Kroah-Hartman in a livid email. “You are not welcome here.”How did one email lead to a university-wide ban? I’ve spent the past week digging into this world — the players, the jargon, the university’s turbulent history with open-source software, the devoted and principled Linux kernel community. None of the University of Minnesota researchers would talk to me for this story. But among the other major characters — the Linux developers — there was no such hesitancy. This was a community eager to speak; it was a community betrayed.The story begins in 2017, when a systems-security researcher named Kangjie Lu became an assistant professor at the University of Minnesota.Lu’s research, per his website, concerns “the intersection of security, operating systems, program analysis, and compilers.” But Lu had his eye on Linux — most of his papers involve the Linux kernel in some way.The Linux kernel is, at a basic level, the core of any Linux operating system. It’s the liaison between the OS and the device on which it’s running. A Linux user doesn’t interact with the kernel, but it’s essential to getting things done — it manages memory usage, writes things to the hard drive, and decides what tasks can use the CPU when. The kernel is open-source, meaning its millions of lines of code are publicly available for anyone to view and contribute to.Getting a patch on people’s computers is no easy taskWell, “anyone.” Getting a patch onto people’s computers is no easy task. A submission needs to pass through a large web of developers and “maintainers” (thousands of volunteers, who are each responsible for the upkeep of different parts of the kernel) before it ultimately ends up in the mainline repository. Once ther...