[FS#1407] Wireguard not working after kernel: bump 4.14 to 4.14.23 on x86

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - Bluse-Blue (Bluse) 

Attached to Project - OpenWrt/LEDE Project
Summary - Wireguard not working after kernel: bump 4.14 to 4.14.23 on x86
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Hi all,

After commit "kernel: bump 4.14 to 4.14.23" commit id b5469b38cd68342db0a4c476aec9ad7a0c164027 ... Wireguard does not work on x86 64bit.

Symptoms:
Wireguard interface does not show up. UBUS shows for the wg interface an INVALID_PROTO error.

On my APU2 the ubus error is:

root at APU2 / # ubus call network.interface.wg0 status
{
        "up": false,
        "pending": false,
        "available": false,
        "autostart": true,
        "dynamic": false,
       "proto": "none",
       "data": {

       },
       "errors": [
               {
                       "subsystem": "proto",
                       "code": "INVALID_PROTO"
               }
        ]
}

After reverting the mentioned kernel bump commit (b5469b38cd68342db0a4c476aec9ad7a0c164027) Wireguard does work again.

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1407