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[Launchpad Bug Tracker <2007241@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package ubuntu-advantage-tools - 27.14.4~22.04

---------------
ubuntu-advantage-tools (27.14.4~22.04) jammy; urgency=medium

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

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
10:48:43 -0300

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

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https://bugs.launchpad.net/bugs/2007241

Title:
  /usr/lib/ubuntu-advantage/esm_cache.py:AttributeError:/usr/lib/ubuntu-
  advantage/esm_cache.py@21:__init__:parse_config:safe_load:load:get_single_data:construct_document:construct_yaml_map:construct_mapping:construct_mapping

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]
  Users who have a non-standard python installation will get errors when u-a-t scripts run (including during apt update for most users - even if not attached to Ubuntu Pro). This happens when u-a-t tries to use yaml functionality but the version of yaml installed by the user is not compatible with what u-a-t expects.

  The issue is mitigated by logging an error and exiting when yaml fails
  to safe_load/safe_dump, avoiding a crash and autoamatic error reports.

  [Test Case]
  This will be covered by our full test run for u-a-t 27.14.
  The specific test that covers this scenario can be inspected here:
  https://github.com/canonical/ubuntu-pro-client/blob/27.14/features/unattached_commands.feature#L357

  [Regression Potential]
  The fix relies on importing yaml functionality from uaclient.yaml - if in any code we import directly from yaml, it will bypass this fix and fail in the same scenario as this bug does. We need to pay attention to not import yaml directly in any other module.

  The fix also involves re-exporting the yaml functions, if we missed an
  export that another piece of code relies on, then that would cause an
  unhandled exception.

  [Discussion]
  Until recently our position had been: non-standard python install -> unsupported. This fix is deals with the error in a best-effort implementation to avoid crashes and automatic reports from errors.ubuntu.com, which can block phasing for no reason.

  [Original Description]
  The Ubuntu Error Tracker has been receiving reports about a problem regarding ubuntu-advantage-tools.  This problem was most recently seen with package version 27.13.5~22.04.1, the problem page at https://errors.ubuntu.com/problem/4f8f84174665cc7c259acce6afe07a6fd5010b97 contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports.
  If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/.

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