group.of.nepali.translators team mailing list archive

[Julian Andres Klode <1615381@xxxxxxxxxxxxxxxxxx>]

** Also affects: apt (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Also affects: unattended-upgrades (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Also affects: apt (Ubuntu Groovy)
   Importance: Undecided
       Status: New

** Also affects: unattended-upgrades (Ubuntu Groovy)
   Importance: Undecided
       Status: New

** Also affects: apt (Ubuntu Hirsute)
   Importance: Undecided
       Status: Fix Released

** Also affects: unattended-upgrades (Ubuntu Hirsute)
   Importance: High
       Status: Fix Released

** Also affects: apt (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: unattended-upgrades (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** No longer affects: unattended-upgrades (Ubuntu Bionic)

** No longer affects: unattended-upgrades (Ubuntu Focal)

** No longer affects: unattended-upgrades (Ubuntu Groovy)

** No longer affects: unattended-upgrades (Ubuntu Hirsute)

** Changed in: apt (Ubuntu Groovy)
       Status: New => Confirmed

** Changed in: apt (Ubuntu Groovy)
       Status: Confirmed => Triaged

** Changed in: apt (Ubuntu Groovy)
       Status: Triaged => Confirmed

** Changed in: apt (Ubuntu Focal)
       Status: New => Confirmed

** Changed in: apt (Ubuntu Bionic)
       Status: New => Confirmed

** Changed in: apt (Ubuntu Groovy)
       Status: Confirmed => Triaged

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Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1615381

Title:
  apt-get autoremove may remove current kernel

Status in apt package in Ubuntu:
  Fix Released
Status in unattended-upgrades package in Ubuntu:
  Fix Released
Status in unattended-upgrades source package in Trusty:
  Won't Fix
Status in unattended-upgrades source package in Xenial:
  Fix Released
Status in unattended-upgrades source package in Artful:
  Won't Fix
Status in apt source package in Bionic:
  Confirmed
Status in apt source package in Focal:
  Confirmed
Status in apt source package in Groovy:
  Triaged
Status in apt source package in Hirsute:
  Fix Released

Bug description:
  [Impact]
  APT will try and fail to remove the currently running kernel, when booted into an older kernel that is not protected. May wreak some havoc if mixed with other operations to the point that apt goes weird and needs manual fixing up.

  [Test case]
  - Install new kernel
  - Reboot into kernel not listed as protected in 01autoremove-kernels
  - Run autoremove

  [Where problems could occur]
  We may more easily run out of space in /boot. hirsute has new autoremoval code that runs completely at runtime; but that seems a bit large to SRU after only a few weeks in hirsute. Hence, we should protect the current kernel _in addition_ to the other kernels, just like unattended-upgrades and update-manager do. This increases the risk of filling up /boot compared to older apt versions, but is at the same level as unattended-upgrades and update-manager.

  [Original bug report]

  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).
  Note: The workaround breaks autoremoving feature of new unneeded kernels in  unattended-upgrades i.e. the setting 'Unattended-Upgrade::Remove-New-Unused-Dependencies "true"' (which is default in 16.04 unless 'Unattended-Upgrade::Remove-Unused-Dependencies "true"' is set in '/etc/apt/apt.conf.d/50unattended-upgrades'.

  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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