openafs-modules-dkms 1.6.7-1ubuntu1: openafs kernel module failed to build

dont kmow much but it made computer crash.

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: openafs-modules-dkms 1.6.7-1ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-45.60~14.04.1-generic 3.16.7-ckt14
Uname: Linux 3.16.0-45-generic i686
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: i386
DKMSKernelVersion: 3.16.0-45-generic
Date: Sun Aug 2 12:57:07 2015
DuplicateSignature: dkms:openafs-modules-dkms:1.6.7-1ubuntu1:/var/lib/dkms/openafs/1.6.7/build/src/libafs/MODLOAD-3.16.0-45-generic-SP/osi_vnodeops.c:815:19: error: ‘generic_file_splice_write’ undeclared here (not in a function)
InstallationDate: Installed on 2015-08-02 (0 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release i386 (20150218.1)
PackageArchitecture: all
PackageVersion: 1.6.7-1ubuntu1
SourcePackage: openafs
Title: openafs-modules-dkms 1.6.7-1ubuntu1: openafs kernel module failed to build
UpgradeStatus: No upgrade log present (probably fresh install)