Optimized sub-optimal code. @5andr0

static void * get_symbol_addr_kprobe(const char * symbol_name) {
    struct kprobe kp = {
        .symbol_name = symbol_name,
    };
    int ret = register_kprobe( & kp);
    if (ret < 0) {
        pr_err("register_kprobe failed for %s\n", symbol_name);
        return NULL;
    }
    void * addr = (void * ) kp.addr;
    unregister_kprobe( & kp);
    return addr;
}