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wireguard kernel module not loading.
Closed, ResolvedPublicBUG


msbone [9:41 AM]
yes modprobe: ERROR: could not insert 'wireguard': Invalid argument
hagbard [9:44 AM]
I have the august image, no issue. Very strange. exec: sudo bash to become root then do a 'grep wireguard /lib/modules/uname -r/modules.dep'
msbone [9:45 AM]

root@vyos01:/home/vyos# grep wireguard /lib/modules/`uname -r`/modules.dep
extra/wireguard.ko: kernel/net/ipv6/ip6_udp_tunnel.ko kernel/net/ipv4/udp_tunnel.ko kernel/net/ipv6/ipv6.ko

hagbard [9:53 AM]
ok, so the module is there. (extra/wireguard.ko) Doe 'modinfo -v wireguard' show anything?
no -v just modinfo wireguard
msbone [9:55 AM]

root@vyos01:/home/vyos# modinfo wireguard
filename:       /lib/modules/4.18.4-amd64-vyos/extra/wireguard.ko
alias:          net-pf-16-proto-16-family-wireguard
alias:          rtnl-link-wireguard
version:        0.0.20180708-1
author:         Jason A. Donenfeld <>
description:    Fast, secure, and modern VPN tunnel
license:        GPL v2
srcversion:     E818CD2CD2A19B21ACE83D1
depends:        ipv6,udp_tunnel,ip6_udp_tunnel
name:           wireguard
vermagic:       4.18.4-amd64-vyos SMP mod_unload modversions


Difficulty level
Unknown (require assessment)
Why the issue appeared?
Will be filled on close
hagbard created this task.Sep 12 2018, 5:06 PM
hagbard claimed this task.

4954.412990] wireguard: loading module not compiled with retpoline compiler.

[ 4954.413080] wireguard: disagrees about version of symbol skb_put

[ 4954.413081] wireguard: Unknown symbol skb_put (err -22)

[ 4954.413085] wireguard: disagrees about version of symbol ip6_dst_hoplimit

[ 4954.413085] wireguard: Unknown symbol ip6_dst_hoplimit (err -22) seems to be a non-functional build. When I boot it from scratch it drops me only into initramfs. @msbone did an upgrade on hist system from 1.2.0-rolling+201808171757. I advised him to the use the is o from Sept. 10 which I tested for it's functionality. I see if I can find out what happened with the latest build. IT' a kernel module load issue I can reproduce already when booting the iso.

@msbone used the version I mentioned and confirmed functionality. We have to find out what's wrong with the kernel build

c-po added a subscriber: c-po.Sep 12 2018, 9:11 PM

VyOS Kernel was rebuild with retpoline enabled As Kernel modules sometimes depend heavily on the unterlaying ABI (Application Binary Interface) this will break if the module is not rebuild.

Seems like I broke it. We should make vyos-wireguard a downstream jenkins peojekt to vyos-kernel so it is rebuild automatically.

Retpoline is a crucial change so extending the kernel module information (can be enabled in menuconfig) would not have covered this I think.

c-po added a comment.Sep 15 2018, 7:51 AM


$ show version
Version:          VyOS 1.2.0-rolling+201809150337
$ sudo modprobe wireguard
$ dmesg | tail -n 4
[   77.915285] systemd-sysv-generator[2934]: Overwriting existing symlink /run/systemd/generator.late/isc-dhcp-server.service with real service
[  174.154861] wireguard: loading out-of-tree module taints kernel.
[  174.158164] wireguard: WireGuard 0.0.20180708-1 loaded. See for information.
[  174.158166] wireguard: Copyright (C) 2015-2018 Jason A. Donenfeld <>. All Rights Reserved.
c-po moved this task from Need Triage to Finished on the VyOS 1.2 Crux board.Sep 15 2018, 7:51 AM
c-po closed this task as Resolved.
c-po edited projects, added VyOS 1.2 Crux (VyOS 1.2.0-rc1); removed VyOS 1.2 Crux.