On Tue, 12 Apr 2022 09:49:23 +0900 Masami Hiramatsu <mhiramat@xxxxxxxxxx> wrote: > > I'm really curious how did you manage to attach to everything in > > available_filter_functions because when I'm trying to do that I fail. > > available_filter_functions has a bunch of functions that should not be > > attachable (e.g., notrace functions). Look just at __bpf_tramp_exit: > > > > void notrace __bpf_tramp_exit(struct bpf_tramp_image *tr); Did you only use the "notrace" on the prototype? I see the semicolon at the end of your comment. It only affects the actual function itself, not the prototype. -- Steve