virtualbox-dkms 6.0.10-dfsg-5: virtualbox kernel module failed to build [error: ‘-mindirect-branch’ and ‘-fcf-protection’ are not compatible]

[Salih EMIN]

Upgrading from 19.04 to 19.10 development

ProblemType: Package
DistroRelease: Ubuntu 19.10
Package: virtualbox-dkms 6.0.10-dfsg-5
Uname: Linux 5.2.0-9.1-liquorix-amd64 x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
DKMSKernelVersion: 5.0.0-1018-oem-osp1
Date: Sun Aug 25 19:17:06 2019
DuplicateSignature: dkms:virtualbox-dkms:6.0.10-dfsg-5:./include/linux/compiler.h:192:1: error: ‘-mindirect-branch’ and ‘-fcf-protection’ are not compatible
InstallationDate: Installed on 2015-07-26 (1490 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
PackageArchitecture: all
PackageVersion: 6.0.10-dfsg-5
Python3Details: /usr/bin/python3.7, Python 3.7.4, python3-minimal, 3.7.3-1
PythonDetails: /usr/bin/python2.7, Python 2.7.16+, python-minimal, 2.7.16-1
RelatedPackageVersions:
 dpkg 1.19.7ubuntu1
 apt 1.9.3
SourcePackage: virtualbox
Title: virtualbox-dkms 6.0.10-dfsg-5: virtualbox kernel module failed to build
UpgradeStatus: Upgraded to eoan on 2019-08-25 (0 days ago)

[Daniel van Vugt (vanvugt)]

It appears the problem is the custom kernel version 5.2.0-9.1-liquorix-amd64

This bug was already fixed in Ubuntu kernel version 5.2.0-8.9

See bug 1830961.