[Bug 2007286] Re: Ubuntu does not clean out old kernel module files (in /lib/modules) when old kernels are removed

[Artur Meinild]

This is reproducible on both Ubuntu 20.04 and 22.04 Server, on both
AMD64 and ARM64 (Raspberry Pi).

For AMD64 (Intel):

$ ls -l /lib/modules/5.4.0-xx-generic
-rw-r--r--  1 root 143K 2022-04-28 18:36 modules.alias
-rw-r--r--  1 root 154K 2022-04-28 18:36 modules.alias.bin
-rw-r--r--  1 root 8.0K 2022-04-08 10:44 modules.builtin
-rw-r--r--  1 root  25K 2022-04-28 18:36 modules.builtin.alias.bin
-rw-r--r--  1 root  11K 2022-04-28 18:36 modules.builtin.bin
-rw-r--r--  1 root  63K 2022-04-08 10:44 modules.builtin.modinfo
-rw-r--r--  1 root  85K 2022-04-28 18:36 modules.dep
-rw-r--r--  1 root 123K 2022-04-28 18:36 modules.dep.bin
-rw-r--r--  1 root  268 2022-04-28 18:36 modules.devname
-rw-r--r--  1 root 215K 2022-04-08 10:44 modules.order
-rw-r--r--  1 root  489 2022-04-28 18:36 modules.softdep
-rw-r--r--  1 root 279K 2022-04-28 18:36 modules.symbols
-rw-r--r--  1 root 326K 2022-04-28 18:36 modules.symbols.bin

For ARM64 (RasPi):

$ ls -l /lib/modules/5.4.0-xxxx-raspi
-rw-r--r--  1 root 859K 2022-04-25 17:31 modules.alias
-rw-r--r--  1 root 893K 2022-04-25 17:31 modules.alias.bin
-rw-r--r--  1 root  11K 2022-04-04 13:33 modules.builtin
-rw-r--r--  1 root  27K 2022-04-25 17:31 modules.builtin.alias.bin
-rw-r--r--  1 root  14K 2022-04-25 17:31 modules.builtin.bin
-rw-r--r--  1 root  84K 2022-04-04 13:33 modules.builtin.modinfo
-rw-r--r--  1 root 399K 2022-04-25 17:31 modules.dep
-rw-r--r--  1 root 548K 2022-04-25 17:31 modules.dep.bin
-rw-r--r--  1 root  250 2022-04-25 17:31 modules.devname
-rw-r--r--  1 root 209K 2022-04-04 13:33 modules.order
-rw-r--r--  1 root  950 2022-04-25 17:31 modules.softdep
-rw-r--r--  1 root 354K 2022-04-25 17:31 modules.symbols
-rw-r--r--  1 root 425K 2022-04-25 17:31 modules.symbols.bin

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https://bugs.launchpad.net/bugs/2007286

Title:
  Ubuntu does not clean out old kernel module files (in /lib/modules)
  when old kernels are removed

Status in apt package in Ubuntu:
  New

Bug description:
  corrado at corrado-x-kinetic:~$ ls /lib/modules
  5.19.0-23-generic  5.19.0-28-generic  5.19.0-29-generic  5.19.0-31-generic
  corrado at corrado-x-kinetic:~$ ls /boot
  config-5.19.0-29-generic      memtest86+.elf
  config-5.19.0-31-generic      memtest86+_multiboot.bin
  efi                           System.map-5.19.0-29-generic
  grub                          System.map-5.19.0-31-generic
  initrd.img                    vmlinuz
  initrd.img-5.19.0-29-generic  vmlinuz-5.19.0-29-generic
  initrd.img-5.19.0-31-generic  vmlinuz-5.19.0-31-generic
  initrd.img.old                vmlinuz.old
  memtest86+.bin
  corrado at corrado-x-kinetic:~$ 
  see also https://discourse.ubuntu.com/t/ubuntu-does-not-clean-out-old-kernel-module-files-in-lib-modules-when-old-kernels-are-removed/33906

  ProblemType: Bug
  DistroRelease: Ubuntu 22.10
  Package: apt 2.5.3
  ProcVersionSignature: Ubuntu 5.19.0-31.32-generic 5.19.17
  Uname: Linux 5.19.0-31-generic x86_64
  ApportVersion: 2.23.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Feb 14 16:23:49 2023
  InstallationDate: Installed on 2022-11-28 (77 days ago)
  InstallationMedia: Ubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221020)
  SourcePackage: apt
  UpgradeStatus: No upgrade log present (probably fresh install)

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