RecursionError error in call_adjusted()

Bug #1785093 reported by errors.ubuntu.com bug bridge on 2018-08-02
20
This bug affects 1 person
Affects Status Importance Assigned to Milestone
unattended-upgrades (Ubuntu)
Undecided
Unassigned
Bionic
Undecided
Unassigned

Bug Description

[Impact]

 * Unattended-upgrades may crash and stop installing security updates on users' system due to entering infinite loop.
 * The fix ensures terminating the recursive calls.

[Test Case]

 * TODO / observe the crash not being reported for fixed releases on errors.ubuntu.com.

[Regression Potential]

 * Unattended-upgrades now adjusts package candidates only to lower versions than the one originally offered by apt's resolver. This is a change in behavior which aligns well with the default configuration, i.e. installing packages from -security but not from -updates, since -updates almost always have higher version numbers. This change may cause using different upgrade paths when PPAs are involved and all packages can't be upgraded to the highest versions found in allowed origins, because of Conflicts: for example.
 * Unexpected regressions can cause candidate adjustments not taking place, but please note that autopkgtest now includes applying all outstanding security updates for the release thus the new code is covered, too.

[Original Bug report]

The Ubuntu Error Tracker has been receiving reports about a problem regarding unattended-upgrades. This problem was most recently seen with package version 1.1ubuntu1.18.04.5, the problem page at https://errors.ubuntu.com/problem/fa706afe2f0e04b661fe54da0a59b9fc3da50734 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/.

Traceback (most recent call last):
  File "/usr/bin/unattended-upgrade", line 1991, in <module>
    sys.exit(main(options))
  File "/usr/bin/unattended-upgrade", line 1647, in main
    cache, options, allowed_origins, blacklisted_pkgs, whitelisted_pkgs)
  File "/usr/bin/unattended-upgrade", line 1349, in calculate_upgradable_pkgs
    whitelisted_pkgs)
  File "/usr/bin/unattended-upgrade", line 1288, in try_to_upgrade
    cache.mark_upgrade_adjusted(pkg, from_user=not pkg.is_auto_installed)
  File "/usr/bin/unattended-upgrade", line 212, in mark_upgrade_adjusted
    self.call_adjusted(apt.package.Package.mark_upgrade, pkg, **kwargs)
  File "/usr/bin/unattended-upgrade", line 206, in call_adjusted
    self.call_adjusted(function, pkg, **kwargs)
  File "/usr/bin/unattended-upgrade", line 206, in call_adjusted

Balint Reczey (rbalint) on 2018-08-03
summary: - /usr/bin/unattended-
- upgrade:RecursionError:__getitem__:__getitem__:_rawpkg_to_pkg:__getitem__:/usr/bin
- /unattended-
- upgrade@1991:main:calculate_upgradable_pkgs:try_to_upgrade:mark_upgrade_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:call_adjusted:__getitem__:_rawpkg_to_pkg:__setitem__:__init__
+ RecursionError error in call_adjusted()
summary: - RecursionError error in call_adjusted()
+ RecursionError error in call_adjusted() when packaga is pinned < 100
summary: - RecursionError error in call_adjusted() when packaga is pinned < 100
+ RecursionError error in call_adjusted() when package is pinned < 100
description: updated

This bug was fixed in the package unattended-upgrades - 1.5ubuntu2

---------------
unattended-upgrades (1.5ubuntu2) cosmic; urgency=medium

  * Reopen Cache after commit() even when frontend locking is supported.
    This fixes build and operation with latest python-apt.

 -- Balint Reczey <email address hidden> Tue, 28 Aug 2018 15:46:25 +0200

Changed in unattended-upgrades (Ubuntu):
status: New → Fix Released
Balint Reczey (rbalint) on 2018-08-30
summary: - RecursionError error in call_adjusted() when package is pinned < 100
+ RecursionError error in call_adjusted()
Balint Reczey (rbalint) on 2018-08-30
description: updated
Brian Murray (brian-murray) wrote :

The bucket_id for this crash is ridiculously long and ends causing the Errors site to throw a 414 error. I was able to manually query the database using the bucket_id and discovered the following.

In [10]: cassandra.get_versions_for_bucket(urllib.unquote(bucket2))
Out[10]: OrderedDict([(('Ubuntu 18.04', '1.1ubuntu1.18.04.5'), 16)])

So with that information we should be able to verify that the SRU'ed version of the package is not affected.

Hello errors.ubuntu.com, or anyone else affected,

Accepted unattended-upgrades into bionic-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/unattended-upgrades/1.1ubuntu1.18.04.6 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested and change the tag from verification-needed-bionic to verification-done-bionic. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-bionic. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

Changed in unattended-upgrades (Ubuntu Bionic):
status: New → Fix Committed
tags: added: verification-needed verification-needed-bionic
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