** Changed in: update-manager (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1815494
Title:
May remove autoremovable non-kernel packages matching pattern from
APT::VersionedKernelPackages
Status in unattended-upgrades package in Ubuntu:
Fix Released
Status in update-manager package in Ubuntu:
Confirmed
Status in unattended-upgrades source package in Xenial:
Fix Released
Status in unattended-upgrades source package in Bionic:
Fix Released
Status in unattended-upgrades source package in Cosmic:
Fix Released
Bug description:
[Impact]
* Non-kernel related autoremovable packages may be removed by
unattended-upgrades due to their name matching generic patterns like
'.*-modules' which should be applied to versioned kernel packages only.
* The fix corrects the way those patterns are handled.
[Test Case]
* test/test_remove_unused.py checks for correct pattern usage now.
[Regression Potential]
* Unattended-upgrades may stop removing autoremovable kernels, but the
tests also contain cases covering this and u-u's kernel autoremoval
still works.
[Original Bug Text]
Unattended-upgrades and Update Manager use the patterns from the
APT::VersionedKernelPackages list directly for finding kernel packages
to remove while APT uses patterns by attaching version and flavor to
them.
As a result in APT's script ".*-modules" becomes
"^.*-modules-4\.15\.0-45-generic$":
...
for package in $(apt-config dump --no-empty --format '%v%n'
'APT::VersionedKernelPackages'); do
for kernel in $kernels; do
echo " \"^${package}-${kernel}$\";"
done
...
In unattended-upgrades and update-manager ".*-modules" is used
directly for matching and may false identify autoremovable packages
as kernel-related ones and remove them (of just offer the removal in
case of update-manager):
...
Removing unused kernel packages: extra-cmake-modules
marking extra-cmake-modules for removal
(Reading database ... 31149 files and directories currently installed.)
Removing extra-cmake-modules (5.44.0-0ubuntu1) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Packages that were successfully auto-removed: extra-cmake-modules
...
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