lttng-modules-dkms 2.4.0-1ubuntu1.1: lttng-modules kernel module failed to build

This crashes at startup

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: lttng-modules-dkms 2.4.0-1ubuntu1.1
ProcVersionSignature: Ubuntu 3.19.0-58.64~14.04.1-generic 3.19.8-ckt16
Uname: Linux 3.19.0-58-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
DKMSKernelVersion: 3.19.0-58-generic
Date: Tue Apr 5 11:35:21 2016
DuplicateSignature: dkms:lttng-modules-dkms:2.4.0-1ubuntu1.1:/var/lib/dkms/lttng-modules/2.4.0/build/wrapper/ringbuffer/../../lib/ringbuffer/../../wrapper/ringbuffer/../../lib/ringbuffer/frontend_api.h:76:2: error: implicit declaration of function '__get_cpu_var' [-Werror=implicit-function-declaration]
InstallationDate: Installed on 2016-01-05 (91 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
PackageArchitecture: all
PackageVersion: 2.4.0-1ubuntu1.1
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.5
 apt 1.0.1ubuntu2.11
SourcePackage: lttng-modules
Title: lttng-modules-dkms 2.4.0-1ubuntu1.1: lttng-modules kernel module failed to build
UpgradeStatus: No upgrade log present (probably fresh install)