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Groups > linux.debian.kernel > #90882

Bug#1126020: trixie-pu: package linux-base/4.12.1

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Package: release.debian.org
Severity: normal
Tags: trixie
X-Debbugs-Cc: linux-base@packages.debian.org, debian-kernel@lists.debian.org
Control: affects -1 + src:linux-base
User: release.debian.org@packages.debian.org
Usertags: pu

[ Reason ]
linux-run-hooks does not look for linux-headers postinst hooks in the
same directory as older linux-headers postinst scripts.  This was an
unintended incompatible change between bookworm and trixie.

[ Impact ]
linux-headers postinst hooks are not being run when a linux-headers
package is installed.  Currently the only such hook packaged in Debian
belongs to dkms.  This could result in out-of-tree modules not being
rebuilt at the right time.

In trixie the impact is mitigated because linux-headers packages
depend on the corresponding linux-image packages and dkms also
installs a postinst hook for those.  However, this dependency has been
removed in unstable, so the mitigation does not apply when installing
a kernel from trixie-backports or during an upgrade to forky.

Secondly, I want to avoid downstream distributions or users adding
hooks in {/etc,/usr/share}/kernel/headers_postinst.d, which won't work
in either bookworm or forky.

[ Tests ]
I verified that:
- Installation of a linux-headers package while
  linux-base 4.12 was installed did not run a hook script in
  /etc/kernel/header_postinst.d
- Reinstallation of a linux-headers package while
  linux-base 4.12.1 was installed did run the hook script
- Installation of a linux-image package while linux-base 4.12.1 was
  installed ran the postinst hooks in /etc/kernel/postinst.d

[ Risks ]
If any downstream distribution or user added or moved a hook in
{/etc,/usr/share}/kernel/headers_postinst.d post-trixie, this will
stop working until they move it back to the previously
supported directory.

[ Checklist ]
  [X] *all* changes are documented in the d/changelog
  [X] I reviewed all changes and I approve them
  [X] attach debdiff against the package in (old)stable
  [X] the issue is verified as fixed in unstable

[ Changes ]
- Change the construction of hook directory names to drop the 's'
  from 'headers'
- Fix a somewhat related documentation error
- Adjust CI configuration for trixie

[ Other info ]

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Bug#1126020: trixie-pu: package linux-base/4.12.1 Ben Hutchings <ben@decadent.org.uk> - 2026-01-20 14:30 +0100

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