kern_sys_bpf
int kern_sys_bpf(int cmd, union bpf_attr *attr, unsigned int size);
EXPORT_SYMBOL_NS(kern_sys_bpf, "BPF_INTERNAL");
long kern_sys_bpf(__u32 cmd, void *attr, __u32 attr_size);
return kern_sys_bpf(cmd, attr, size);