On Sun, Oct 31, 2021 at 08:10:45PM +0100, Florian Westphal wrote: > > Depending on meaning of "unstable helper" this > is ok and can be changed in incompatible way later. "unstable helper" means that it's not part of uapi. All kfuncs are like that. They can and will change. bpf progs that call them would have to adjust. Just like bpf progs that read kernel data and walk kernel types.