The surprisingly high likelihood of a kernel bug being due to cosmic rays! https://lwn.net/Articles/219983/
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Overall it seems like the Rust for Linux is making huge strides. Greg KH is super supportive of it[1] and the wider Linux community is pretty positive[2] (see all the quotes at the end of the slides).
1: https://lore.kernel.org/rust-for-linux/2025021954-flaccid-pucker-f7d9@gregkh/
2:
Amazing blog post about running a modern Linux kernel on Chumby hardware, investigating bad CPU numbers from top, and finding a Linux kernel bug from 2009!
Difftastic is written in Rust, so I was surprised to get a user report of a segfault.
After some investigation, it turns out that it's a segfault in git itself, which has existed since 2014! https://lore.kernel.org/git/CAFXAjY7XcL1APhLRXU8TO96z=f7957f2ieK56dHVsXUay55vpg@mail.gmail.com/T/#u
(Upstream has already kindly written a patch.)