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 1851819

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

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https://bugs.launchpad.net/bugs/1851819

Title:
  bond: An illegal loopback occurred on slave

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Mellanox ConnectX 5 adapter configured with LACP bonding; adapters in
  switchdev (offload) mode with VF's configure on both ports.

  Kernel continually reports:

  Nov  8 10:57:51 node-laveran kernel: [ 2087.912308] bond1: (slave enp3s0f0): 
An illegal loopback occurred on slave
  Nov  8 10:57:51 node-laveran kernel: [ 2087.912308] Check the configuration 
to verify that all adapters are connected to 802.3ad complian
  t switch ports
  Nov  8 10:57:51 node-laveran kernel: [ 2087.917329] bond1: (slave enp3s0f1): 
An illegal loopback occurred on slave
  Nov  8 10:57:51 node-laveran kernel: [ 2087.917329] Check the configuration 
to verify that all adapters are connected to 802.3ad complian
  t switch ports

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-generic-hwe-18.04-edge 5.3.0.19.85
  ProcVersionSignature: Ubuntu 5.3.0-19.20~18.04.2-generic 5.3.1
  Uname: Linux 5.3.0-19-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.9
  Architecture: amd64
  Date: Fri Nov  8 10:54:32 2019
  ProcEnviron:
   TERM=screen-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  SourcePackage: linux-meta-hwe-edge
  UpgradeStatus: No upgrade log present (probably fresh install)

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