openafs-modules-dkms 1.6.15-1ubuntu1: openafs kernel module failed to build

[Edward Karavakis]

Happened after a:
sudo apt install --install-recommends xserver-xorg-hwe-16.04

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: openafs-modules-dkms 1.6.15-1ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-59.80-generic 4.4.35
Uname: Linux 4.4.0-59-generic x86_64
NonfreeKernelModules: openafs
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
DKMSKernelVersion: 4.8.0-36-generic
Date: Mon Feb 20 10:56:53 2017
DuplicateSignature: dkms:openafs-modules-dkms:1.6.15-1ubuntu1:/var/lib/dkms/openafs/1.6.15/build/src/afs/LINUX/osi_compat.h:194:12: error: too few arguments to function ‘key_alloc’
InstallationDate: Installed on 2016-11-14 (97 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: all
PackageVersion: 1.6.15-1ubuntu1
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.19
SourcePackage: openafs
Title: openafs-modules-dkms 1.6.15-1ubuntu1: openafs kernel module failed to build
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Michael Duehrssen (mduehm)]

A possible workaround that worked for me is to use the packages from openafs directly:
sudo add-apt-repository ppa:openafs/stable
sudo apt-get update
as described in https://launchpad.net/~openafs/+archive/ubuntu/stable

This currently installs openafs version 1.6.21

[Rich Wales (richw)]

The ppa:openafs/stable workaround restored AFS client service to my machine (which had been lost after I switched to the HWE kernel in early January 2018). Currently running openafs-client 1.6.22-3~ppa0~ubuntu16.04.1.