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[Launchpad Bug Tracker <2013409@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package ubuntu-advantage-tools - 27.14.4~20.04

---------------
ubuntu-advantage-tools (27.14.4~20.04) focal; urgency=medium

  * Backport new upstream release: (LP: #2011477) to focal

ubuntu-advantage-tools (27.14.4) lunar; urgency=medium

  * timer: disable update_contract_info job (LP: #2015302)
  * livepatch: prevent livepatch from auto-enabling and subsequently failing
    on non-amd64 systems (LP: #2015241)

ubuntu-advantage-tools (27.14.3) lunar; urgency=medium

  * livepatch: prevent livepatch from auto-enabling and subsequently failing
    on interim releases (LP: #2013409)

ubuntu-advantage-tools (27.14.2~23.04.1) lunar; urgency=medium

  * status:
    - always use dpkg instead of lscpu for fetching architecture
      information (LP: #2012735)

ubuntu-advantage-tools (27.14.1~23.04.1) lunar; urgency=medium

  * New upstream release 27.14.1
    - apt: fix a configuration leak in the apt.get_pkg_candidate_version
      function (LP: #2012642)

ubuntu-advantage-tools (27.14~23.04.1) lunar; urgency=medium

  * d/ubuntu-advantage-tools.{postinst,postrm,preinst}:
    - migrate certain settings out of uaclient.conf to a new file managed by
      the pro config subcommand (LP: #2004280)
  * d/ubuntu-advantage-tools.postinst:
    - refactor PREVIOUS_PKG_VER as a global variable
    - simplify how we add notices
  * New upstream release 27.14 (LP: #2011477)
    - api: new u.unattended_upgrades.status.v1 endpoint for querying status of
      unattended upgrades
    - apt:
      + remove legacy apt-hook
      + deliver json apt-hook for interim releases
      + fix cloud identification logic in json apt-hook
      + make all calls to esm-cache isolated from system configuration
        (LP: #2008280)
      + only set up the esm cache on supported systems (LP: #2004018)
    - fix:
      + format the output to be more readable (LP: #1926182)
      + add option to attach during a fix without a token
      + verify if fixed version can be installed before trying (LP: #2006705)
    - livepatch: show warning if current kernel is not supported
    - locks: alert user about corrupted lock files (LP: #1996931)
    - logging: logs are now formatted as jsonlines
    - motd: remove esm-apps announcement
    - notices: new representation on disk as separate files (LP: #1987738)
    - realtime: remove ubuntu-realtime package on disablement
    - status:
      + removed contract info update check network call
      + no longer includes warnings about notices when non-root (LP: #2006138)
      + unattached status sends virt type to contract server for better
        resource availability calculation
    - timer jobs: add daily job to check for contract updates
    - yaml: always import distro-provided pyyaml (LP: #2007234, LP: #2007241)

 -- Renan Rodrigo <renanrodrigo@xxxxxxxxxxxxx>  Thu, 06 Apr 2023
10:48:25 -0300

** Changed in: ubuntu-advantage-tools (Ubuntu Jammy)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2013409

Title:
  pro attach fails on interim releases when enabling livepatch

Status in ubuntu-advantage-tools package in Ubuntu:
  Fix Released
Status in ubuntu-advantage-tools source package in Xenial:
  Fix Released
Status in ubuntu-advantage-tools source package in Bionic:
  Fix Released
Status in ubuntu-advantage-tools source package in Focal:
  Fix Released
Status in ubuntu-advantage-tools source package in Jammy:
  Fix Released
Status in ubuntu-advantage-tools source package in Kinetic:
  Fix Released

Bug description:
  [ Impact ]
  `pro attach` fails on interim releases because it attempts to enable livepatch, which is not supported on interim releases and errors.

  The fix is to honor the existing "series" affordance which specifies
  which releases livepatch can be enabled on.

  [ Test Plan ]
  `pro attach` on an interim release (kinetic or lunar).

  Before the fix, it will fail while enabling Livepatch.

  After the fix, it will not attempt to enable livepatch.

  [ Where problems could occur ]
  The affordance checking code now runs before enabling livepatch. This is well-tested, but if there is an error, then the bug could reoccur in some situation.
  More likely, is that we forget to add a supported release to the list of supported releases in the future - which would prevent livepatch from getting enabled on that future supported release.
  We'll need to remember this for 24.04 - luckliy this affects all Pro services equally, so we'll add 24.04 to the list of supported releases around the same time we're adding it to ESM.

  [ Other Info ]
  This bug occurred because we were relaxing our affordance checking before enabling livepatch - in order to allow livepatch client to be the source of truth for whether a certain kernel is supported or not. This is generally good and works for kernel versions and flavors, but interim releases and non-amd64 architectures are not supported at all, so they need to be treated specially.

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