[tptacek]

Unprivileged BPF is used for socket filters, for programs to BPF-extend themselves. It wasn't ever the case that unprivileged eBPF would allow you to, say, load a TC filter and read everybody's traffic.

[saagarjha]

Ok but you can like put a tracepoint on read/write and peek at what’s going through those, no?

[madog]

Nope. Tracepoint eBPF programs require root to load always. For eBPF you select a program type, and that limits what you can do (aka what helper functions are available to you) and what privileges are required.

[tptacek]

I have no idea, because every system I've ever worked on has disabled unprivileged eBPF.