Kernel Oops - BUG: unable to handle kernel NULL pointer dereference at 0000000000000010; RIP is 0010:[<ffffffff8123cc9e>] [<ffffffff8123cc9e>] propagate_one+0xbe/0x1c0

[fcole90]

I cannot log in to Ubuntu anymore:
 - the default login hangs
 - switching to a VT shows the Kernel Oops and then nothing else works

Description: Ubuntu 16.04 LTS
Release: 16.04

linux-image-generic:
  Installed: 4.4.0.21.22
  Candidate: 4.4.0.21.22
  Version table:
 *** 4.4.0.21.22 500
        500 http://ubuntu.mirror.su.se/ubuntu xenial/main amd64 Packages
        100 /var/lib/dpkg/status

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1578325

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.

[fcole90 (fcole90)]

Sorry, apport collecting does not work in recovery and I can't log in

[fcole90 (fcole90)]

Removing lxd solved the problem

Workaround:
sudo apt remove lxd

[fcole90 (fcole90)]

This bug has the same stack trace of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1572316