zlacker

I think it goes beyond "panics". Linus is saying that Rust cannot guarantee safety under certain circumstances and that safety still depends on the order of fuctions called by the kernel module developer. Because some checks on some compilations will be disabled.

"If you want to allocate memory, and you don't want to care about what context you are in, or whether you are holding spinlocks etc, then you damn well shouldn't be doing kernel programming. Not in C, and not in Rust.

It really is that simple. Contexts like this ("I am in a critical region, I must not do memory allocation or use sleeping locks") is fundamental to kernel programming. It has nothing to do with the language, and everything to do with the problem space."

https://lkml.org/lkml/2022/9/19/840