apport information

** Attachment added: "UdevDb.txt"
   https://bugs.launchpad.net/bugs/1773165/+attachment/5146500/+files/UdevDb.txt

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https://bugs.launchpad.net/bugs/1773165

Title:
  openvswitch-datapath-dkms kernel module is not getting loaded

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Distributor ID: Ubuntu
  Description: Ubuntu 16.04.4 LTS
  Release: 16.04
  Codename: xenial

  Kernel version: 4.4.0-127-generic
  OVS version: 2.7.0

  
  # Issue description
  openvswitch-datapath-dkms kernelmodule is not getting loaded

  
  # Error from dmesg
  [10863.380564] openvswitch: module verification failed: signature and/or 
required key missing - tainting kernel
  [10863.381804] openvswitch: exports duplicate symbol dst_cache_destroy (owned 
by kernel)
  [10863.517173] openvswitch: exports duplicate symbol dst_cache_destroy (owned 
by kernel)
  [10878.094250] openvswitch: exports duplicate symbol dst_cache_destroy (owned 
by kernel)

  
  #Error from syslog
  May 24 08:37:06 dev65 kernel: [76508.361496] openvswitch: exports duplicate 
symbol dst_cache_destroy (owned by kernel)
  May 24 08:37:06 dev65 openvswitch-switch[18336]: modprobe: ERROR: could not 
insert 'openvswitch': Exec format error
  May 24 08:37:06 dev65 openvswitch-switch[18336]:  * Inserting openvswitch 
module

  
  #installation logs:
  Selecting previously unselected package openvswitch-datapath-dkms.
  (Reading database ... 84707 files and directories currently installed.)
  Preparing to unpack openvswitch-datapath-dkms_2.7.0-1_all.deb ...
  Unpacking openvswitch-datapath-dkms (2.7.0-1) ...
  Setting up openvswitch-datapath-dkms (2.7.0-1) ...

  Creating symlink /var/lib/dkms/openvswitch/2.7.0/source ->
                   /usr/src/openvswitch-2.7.0

  DKMS: add completed.

  Kernel preparation unnecessary for this kernel.  Skipping...

  Building module:
  cleaning build area....(bad exit status: 2)
  ./configure --with-linux='/lib/modules/4.4.0-127-generic/build' && make -C 
datapath/linux......................
  cleaning build area....(bad exit status: 2)

  DKMS: build completed.

  openvswitch:
  Running module version sanity check.
   - Original module
   - Installation
     - Installing to /lib/modules/4.4.0-127-generic/updates/dkms/

  vport-geneve.ko:
  Running module version sanity check.
   - Original module
   - Installation
     - Installing to /lib/modules/4.4.0-127-generic/updates/dkms/

  vport-gre.ko:
  Running module version sanity check.
   - Original module
   - Installation
     - Installing to /lib/modules/4.4.0-127-generic/updates/dkms/

  vport-lisp.ko:
  Running module version sanity check.
   - Original module
   - Installation
     - Installing to /lib/modules/4.4.0-127-generic/updates/dkms/

  vport-stt.ko:
  Running module version sanity check.
   - Original module
   - Installation
     - Installing to /lib/modules/4.4.0-127-generic/updates/dkms/

  vport-vxlan.ko:
  Running module version sanity check.
   - Original module
   - Installation
     - Installing to /lib/modules/4.4.0-127-generic/updates/dkms/

  depmod....

  DKMS: install completed.

  
  #Dpkg status
  dpkg -l | grep openvswitch
  ii  openvswitch-common                   2.7.0-1                              
      amd64        Open vSwitch common components
  ii  openvswitch-datapath-dkms            2.7.0-1                              
      all          Open vSwitch datapath module source - DKMS version
  ii  openvswitch-switch                   2.7.0-1                              
      amd64        Open vSwitch switch implementations
  ii  python-openvswitch                   2.6.1-0ubuntu5.2~cloud0              
      all          Python bindings for Open vSwitch

  #lsmod status
  No modules are listing for openvswitch-datapath-dkms

  #modprobe error
  modprobe openvswitch
  modprobe: ERROR: could not insert 'openvswitch': Exec format error
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 
k4.4.0-127-generic.
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.20.1-0ubuntu2.17
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', 
'/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', 
'/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  Card0.Amixer.info: Error: [Errno 2] No such file or directory
  Card0.Amixer.values: Error: [Errno 2] No such file or directory
  DistroRelease: Ubuntu 16.04
  IwConfig: Error: [Errno 2] No such file or directory
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: Red Hat KVM
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 cirrusdrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-127-generic 
root=UUID=2bd36290-e77b-49ad-9199-c485da6f4f39 ro
  ProcVersionSignature: Ubuntu 4.4.0-127.153-generic 4.4.128
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-127-generic N/A
   linux-backports-modules-4.4.0-127-generic  N/A
   linux-firmware                             1.157.19
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  xenial uec-images
  Uname: Linux 4.4.0-127-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True
  dmi.bios.date: 01/01/2007
  dmi.bios.vendor: Seabios
  dmi.bios.version: 0.5.1
  dmi.chassis.type: 1
  dmi.chassis.vendor: Red Hat
  dmi.modalias: 
dmi:bvnSeabios:bvr0.5.1:bd01/01/2007:svnRedHat:pnKVM:pvrRHEL6.6.0PC:cvnRedHat:ct1:cvr:
  dmi.product.name: KVM
  dmi.product.version: RHEL 6.6.0 PC
  dmi.sys.vendor: Red Hat

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