Verified 1.1ubuntu1.18.04.7~16.04.3 on Xenial:
root@x-lp-1795696:~# apt-get autoremove
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be REMOVED:
linux-image-unsigned-4.15.0-34-generic linux-modules-4.15.0-34-generic
0 upgraded, 0 newly installed, 2 to remove and 0 not upgraded.
After this operation, 74.5 MB disk space will be freed.
Do you want to continue? [Y/n] n
Abort.
root@x-lp-1795696:~# dpkg -l unattended-upgrades | cat
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-===================-==========================-============-===========================================
ii unattended-upgrades 1.1ubuntu1.18.04.7~16.04.2 all automatic
installation of security upgrades
root@x-lp-1795696:~# unattended-upgrade --dry-run
Traceback (most recent call last):
File "/usr/bin/unattended-upgrade", line 1998, in <module>
sys.exit(main(options))
File "/usr/bin/unattended-upgrade", line 1798, in main
options.verbose or options.debug, options.dry_run)
File "/usr/bin/unattended-upgrade", line 1495, in do_auto_remove
if res:
UnboundLocalError: local variable 'res' referenced before assignment
...
root@x-lp-1795696:~# dpkg -l unattended-upgrades | cat
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name Version Architecture Description
+++-===================-==========================-============-===========================================
ii unattended-upgrades 1.1ubuntu1.18.04.7~16.04.3 all automatic
installation of security upgrades
root@x-lp-1795696:~# unattended-upgrade --dry-run
root@x-lp-1795696:~# unattended-upgrade --dry-run --verbose
Initial blacklisted packages:
Initial whitelisted packages:
Starting unattended upgrades script
Allowed origins are: o=Ubuntu,a=xenial, o=Ubuntu,a=xenial-security,
o=UbuntuESM,a=xenial
Removing unused kernel packages: linux-modules-4.15.0-34-generic
Keeping 1 auto-removable package(s) because it would also remove the following
packages which should be kept in this step:
linux-image-unsigned-4.15.0-34-generic
Packages that were successfully auto-removed:
Packages that are kept back:
No packages found that can be upgraded unattended and no pending auto-removals
** Tags removed: verification-needed verification-needed-xenial
** Tags added: verification-done verification-done-xenial
--
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to unattended-upgrades in
Ubuntu.
https://bugs.launchpad.net/bugs/1795696
Title:
/usr/bin/unattended-upgrade:UnboundLocalError:/usr/bin/unattended-
upgrade@1991:main:do_auto_remove
Status in unattended-upgrades package in Ubuntu:
Fix Released
Status in unattended-upgrades source package in Xenial:
Fix Committed
Status in unattended-upgrades source package in Bionic:
Fix Released
Status in unattended-upgrades source package in Cosmic:
Fix Released
Bug description:
[Impact]
* Unattended-upgrades crashes while auto-removing kernel packages.
[Test Case]
1. Install kernel packages to be automatically removed:
# eatmydata apt install linux-image-4.18.0-13-generic
linux-image-4.18.0-14-generic linux-image-4.18.0-15-generic
# apt-mark auto linux-image-4.18.0-13-generic linux-image-4.18.0-14-generic
linux-image-4.18.0-15-generic
# /etc/kernel/postinst.d/apt-auto-removal
2. Set up u-u to perform action in non-minimal steps:
# grep Minimal /etc/apt/apt.conf.d/50unattended-upgrades
Unattended-Upgrade::MinimalSteps "false";
3. Run u-u in dry-run mode.
Observe it failing with not fixed versions:
# unattended-upgrade --dry-run
Traceback (most recent call last):
File "/usr/bin/unattended-upgrade", line 1998, in <module>
sys.exit(main(options))
File "/usr/bin/unattended-upgrade", line 1798, in main
options.verbose or options.debug, options.dry_run)
File "/usr/bin/unattended-upgrade", line 1495, in do_auto_remove
if res:
UnboundLocalError: local variable 'res' referenced before assignment
Observe the fixed version running properly:
# ./unattended-upgrade --dry-run
#
[Regression Potential]
* The fix is very small and isolated, but a programming error could
cause the misreporting of the success of auto-removals. Considering
the size and simplicity of the change, regressions here seem unlikely.
[Original Bug Text]
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/651a7b7a070dd794d8cf2f5ea8e974614fdedb8e
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/.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/unattended-upgrades/+bug/1795696/+subscriptions
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