RTNETLINK in net from ubuntu_kernel_selftests failed on KVM kernels

Bug #1812194 reported by Po-Hsu Lin on 2019-01-17
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
ubuntu-kernel-tests
Undecided
Unassigned
linux (Ubuntu)
Undecided
Unassigned
Bionic
Undecided
Unassigned
Cosmic
Undecided
Unassigned
Disco
Undecided
Unassigned
linux-kvm (Ubuntu)
Undecided
Unassigned
Bionic
Undecided
Unassigned
Cosmic
Undecided
Unassigned
Disco
Undecided
Unassigned

Bug Description

This test failed because of the unsuccessful attempt to add a dummy device with ip link command:
    # devdummy="test-dummy0"
    # ip link add name "$devdummy" type dummy
    RTNETLINK answers: Operation not supported

 selftests: rtnetlink.sh
 ========================================
 RTNETLINK answers: Operation not supported
 Cannot find device "test-dummy0"
 FAIL: cannot add dummy interface
 not ok 1..10 selftests: rtnetlink.sh [FAIL]

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-1028-kvm 4.15.0-1028.28
ProcVersionSignature: User Name 4.15.0-1028.28-kvm 4.15.18
Uname: Linux 4.15.0-1028-kvm x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
Date: Thu Jan 17 10:21:02 2019
SourcePackage: linux-kvm
UpgradeStatus: No upgrade log present (probably fresh install)

Po-Hsu Lin (cypressyew) wrote :
Po-Hsu Lin (cypressyew) wrote :

Found in 4.18 Bionic AWS as well.

Changed in linux-kvm (Ubuntu Cosmic):
status: New → Invalid

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1812194

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete
Changed in linux (Ubuntu Bionic):
status: New → Incomplete
Changed in linux (Ubuntu Cosmic):
status: New → Incomplete
Po-Hsu Lin (cypressyew) on 2019-06-24
tags: added: linux-kvm sru-20190603
tags: added: ubuntu-kernel-selftests
Po-Hsu Lin (cypressyew) wrote :

Error message on D-KVM:
 selftests: net: rtnetlink.sh
 ========================================
 Error: Unknown device type.
 Cannot find device "test-dummy0"
 FAIL: cannot add dummy interface
 not ok 1..11 selftests: net: rtnetlink.sh [FAIL]

tags: added: sru-20190701
tags: added: 5.0 disco
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