Hi BPF experts, I'm having issues to attach to certain kprobes and kretprobes that are not in the blacklist, like ftrace_modify_all_code. There are kernel modules that are capable of attaching to those kprobes and kretprobes but I could not attach them using libbpf. I tried using both tracee(https://github.com/aquasecurity/tracee) and bpftrace(https://github.com/iovisor/bpftrace) to attach to those kprobes, which to my understanding uses libbpf, but both of them returned an "Invalid argument" error. As the blacklist doesn't seem to cover all the functions which are not attachable to kprobes, is there a way to get/compile such a list? Also, what is the specific problem with attaching to this function (ftrace_modify_all_code)? Thanks.
