Can eBPF programs call kfuncs of out-of-tree modules?

[Shuyi Cheng <chengshuyi@xxxxxxxxxxxxxxxxx>]

Hello.

Recently we found that eBPF can call kernel functions, but we don’t know 
whether it is possible to call register_btf_kfunc_id_set in the 
out-of-tree module, and enable eBPF programs of types such as kprobe and 
tracepoint to call functions defined in out-of-tree modules.

Thanks in advance!