[Bug 1821640] Re: Missing pattern for linux-image-unsigned keeps autoremovable kernels on the system

[Julian Andres Klode]

Installed 1.8.1, running reboot as a user is inhibited:

$ reboot
Operation inhibited by "APT" (PID 3208 "apt", user root), reason is "APT is installing or removing packages".
Please retry operation after closing inhibitors and logging out other users.
Alternatively, ignore inhibitors and users with 'systemctl reboot -i'.

As root it obviously is not, as inhibitors are ignored, nothing we can
do about that now.

** Tags removed: verification-needed-disco
** Tags added: verification-done-disco

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https://bugs.launchpad.net/bugs/1821640

Title:
  Missing pattern for linux-image-unsigned keeps autoremovable kernels
  on the system

Status in apt package in Ubuntu:
  Fix Released
Status in apt source package in Xenial:
  New
Status in apt source package in Bionic:
  New
Status in apt source package in Cosmic:
  New
Status in apt source package in Disco:
  Fix Committed
Status in apt source package in Eoan:
  Fix Released

Bug description:
  [Impact]
  Unattended-upgrades keeps versioned kernel packages because they don't match known kernel package patterns:

  ...
  Keeping auto-removable linux-modules-4.18.0-14-generic package(s) because it would also remove the following packages which should be kept in this step: linux-image-unsigned-4.18.0-14-generic
  ...

  For reproduction see LP: #1795696, but running u-u with --verbose.

  And APT does not apply proper kernel-version based protection to it.

  [Test case]
  linux-image-unsigned should popup in the same list in 01autoremove-kernels as linux-signed-image, and should be autoremovable iff it's signed counterpart is autoremovable.

  [Regression potential]
  Not really any, it's just an additional string in the entry. The only difference really possible therefore is that the set of autoremovable packages changes and unattended-upgrades and friends might autoremove different sets of them.

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