lttng-modules-dkms 2.5.0-1: lttng-modules kernel module failed to build

always occurs during/after software updater updates system or at system startup

ProblemType: Package
DistroRelease: Ubuntu 14.10
Package: lttng-modules-dkms 2.5.0-1
ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
Uname: Linux 3.16.0-25-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
DKMSKernelVersion: 3.16.0-26-generic
Date: Wed Nov 26 19:49:09 2014
DuplicateSignature: dkms:lttng-modules-dkms:2.5.0-1:/var/lib/dkms/lttng-modules/2.5.0/build/lttng-statedump-impl.c:393:2: error: implicit declaration of function ‘task_nsproxy’ [-Werror=implicit-function-declaration]
InstallationDate: Installed on 2014-07-13 (135 days ago)
InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
PackageArchitecture: all
PackageVersion: 2.5.0-1
SourcePackage: lttng-modules
Title: lttng-modules-dkms 2.5.0-1: lttng-modules kernel module failed to build
UpgradeStatus: Upgraded to utopic on 2014-11-14 (11 days ago)