[Bug 1615381] Re: apt-get autoremove may remove current kernel

[Jarno Suni]

I suppose this may happen with unattended-upgrades, too, if user has
configured removing of old kernels.

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https://bugs.launchpad.net/bugs/1615381

Title:
  apt-get autoremove may remove current kernel

Status in apt package in Ubuntu:
  New

Bug description:
  This may happen, if you boot one of the older kernels, that is not
  protected by /etc/apt/apt.conf.d/01autoremove-kernels

  Workaround: run 
  /etc/kernel/postinst.d/&apt-auto-removal
  during each boot (e.g. by using cron).

  In shell:

  $ uname -r
  4.4.0-22-generic
  $ apt-get -s autoremove
  NOTE: This is only a simulation!
        apt-get needs root privileges for real execution.
        Keep also in mind that locking is deactivated,
        so don't depend on the relevance to the real current situation!
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  The following packages will be REMOVED:
    linux-headers-4.4.0-21 linux-headers-4.4.0-21-generic linux-headers-4.4.0-22
    linux-headers-4.4.0-22-generic linux-headers-4.4.0-31-generic
    linux-image-4.4.0-21-generic linux-image-4.4.0-22-generic
    linux-image-4.4.0-31-generic linux-image-extra-4.4.0-21-generic
    linux-image-extra-4.4.0-22-generic linux-image-extra-4.4.0-31-generic
  0 upgraded, 0 newly installed, 11 to remove and 13 not upgraded.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: apt 1.2.12~ubuntu16.04.1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Sun Aug 21 16:11:27 2016
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2016-04-28 (114 days ago)
  InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  SourcePackage: apt
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.kernel.postinst.d.apt-auto-removal: [modified]
  mtime.conffile..etc.kernel.postinst.d.apt-auto-removal: 2016-07-30T12:15:32.706300

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