AUFS モジュールを消さないとlinux-headers-amd64がアンインストールできなかった時の対処

エラー

• aufs/4.19+20190211 でエラーになっている

$ sudo dpkg --configure -a
Setting up linux-headers-6.1.0-40-amd64 (6.1.153-1) ...
/etc/kernel/header_postinst.d/dkms:
dkms: running auto installation service for kernel 6.1.0-40-amd64.
Sign command: /usr/lib/linux-kbuild-6.1/scripts/sign-file
Signing key: /var/lib/dkms/mok.key
Public certificate (MOK): /var/lib/dkms/mok.pub
Error! The /var/lib/dkms/aufs/4.19+20190211/6.1.0-40-amd64/x86_64/dkms.conf for module aufs includes a BUILD_EXCLUSIVE directive which does not match this kernel/arch/config.
This indicates that it should not be built.
Error! One or more modules failed to install during autoinstall.
Refer to previous errors for more information.
dkms: autoinstall for kernel: 6.1.0-40-amd64 failed!
run-parts: /etc/kernel/header_postinst.d/dkms exited with return code 11
Failed to process /etc/kernel/header_postinst.d at /var/lib/dpkg/info/linux-headers-6.1.0-40-amd64.postinst line 11.
dpkg: error processing package linux-headers-6.1.0-40-amd64 (--configure):
 installed linux-headers-6.1.0-40-amd64 package post-installation script subprocess returned error exit status 1
dpkg: dependency problems prevent configuration of linux-headers-amd64:
 linux-headers-amd64 depends on linux-headers-6.1.0-40-amd64 (= 6.1.153-1); however:
  Package linux-headers-6.1.0-40-amd64 is not configured yet.

dpkg: error processing package linux-headers-amd64 (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 linux-headers-6.1.0-40-amd64
 linux-headers-amd64

事前情報

AUFS モジュール側の制限 (BUILD_EXCLUSIVE) が原因。
dockerで以前使われていたが、今はoverlay2が使われているためAUFSは使われていない。

$ docker -v
Docker version 26.1.4, build 5650f9b

$ docker info | grep "Storage Driver"
 Storage Driver: overlay2

アンインストール

sudo dkms remove -m aufs -v 4.19+20190211 --all

$ sudo dkms remove -m aufs -v 4.19+20190211 --all
Module aufs-4.19+20190211 for kernel 4.19.0-11-amd64 (x86_64).
Before uninstall, this module version was ACTIVE on this kernel.

aufs.ko:
 - Uninstallation
   - Deleting from: /lib/modules/4.19.0-11-amd64/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.
depmod...
Module aufs-4.19+20190211 for kernel 4.19.0-12-amd64 (x86_64).
Before uninstall, this module version was ACTIVE on this kernel.

aufs.ko:
 - Uninstallation
   - Deleting from: /lib/modules/4.19.0-12-amd64/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.
depmod...
Module aufs-4.19+20190211 for kernel 4.19.0-14-amd64 (x86_64).
Before uninstall, this module version was ACTIVE on this kernel.

aufs.ko:
 - Uninstallation
   - Deleting from: /lib/modules/4.19.0-14-amd64/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.
depmod...
Module aufs-4.19+20190211 for kernel 4.19.0-16-amd64 (x86_64).
Before uninstall, this module version was ACTIVE on this kernel.

aufs.ko:
 - Uninstallation
   - Deleting from: /lib/modules/4.19.0-16-amd64/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.
depmod...
Module aufs-4.19+20190211 for kernel 4.19.0-17-amd64 (x86_64).
Before uninstall, this module version was ACTIVE on this kernel.

aufs.ko:
 - Uninstallation
   - Deleting from: /lib/modules/4.19.0-17-amd64/updates/dkms/
 - Original module
   - No original module was found for this module on this kernel.
   - Use the dkms install command to reinstall any previous module version.
depmod...
Deleting module aufs-4.19+20190211 completely from the DKMS tree.

削除完了

$ sudo dpkg --configure -a
Setting up linux-headers-6.1.0-40-amd64 (6.1.153-1) ...
/etc/kernel/header_postinst.d/dkms:
dkms: running auto installation service for kernel 6.1.0-40-amd64.
dkms: autoinstall for kernel: 6.1.0-40-amd64.
Setting up linux-headers-amd64 (6.1.153-1) ...

$ sudo apt --fix-broken install
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

$ sudo apt autoremove
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.