Imagine... [LWN.net]

Imagine...

Posted Jan 22, 2026 7:10 UTC (Thu) by milesrout (subscriber, #126894)
In reply to: Imagine... by mb
Parent article: Task-level io_uring restrictions

Remember the counterfactual is a simpler world. Simpler kernel, simpler userspace code. There is a lot of complexity in these layers of "security in depth" and complexity is the source of bugs.

to post comments

Imagine...

Posted Jan 22, 2026 7:50 UTC (Thu) by Wol (subscriber, #4433) [Link]

The problem with a simpler world is simple (as in braindead) users.

I just gave my users a completely new system with the instruction "please test". Thanks to Chinese Whispers, they used it live ... and it contained a painful flaw. It's okay being 95% correct, but if that other 5% is something that's rather noticeable to your customers - ouch! :-(

And apparently it didn't cross ANYbody's mind to think "this is the first time we've used it, and we're using it live". Especially as my default rule is "if you don't know what you're doing, do the same as last week" - the number of times I have to repeat that rule, it frustrates the hell out of me!

Cheers,
Wol