[Bug 2077328] Re: microcode is not included when building initramfs for kernel 6.8

[Benjamin Drung]

Thank you for taking the time to report this bug and helping to make
Ubuntu better. Yes, it is the same issue as
https://issues.redhat.com/browse/RHEL-17902.

The fix is commit
https://github.com/dracutdevs/dracut/commit/6c80408c8644a0add1907b0593eb83f90d6247b1
which is included since dracut 060. Ubuntu 24.04 comes with dracut 060.
So only Ubuntu 22.04 and older are affected.

** Also affects: dracut (Ubuntu Jammy)
   Importance: Undecided
       Status: New

** Changed in: dracut (Ubuntu)
       Status: New => Fix Released

** Changed in: dracut (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/2077328

Title:
  microcode is not included when building initramfs for kernel 6.8

Status in dracut package in Ubuntu:
  Fix Released
Status in dracut source package in Jammy:
  New

Bug description:
  I'm on Ubuntu 22.04 HWE, so the kernel switched from 6.5 to 6.8
  recently and the newly generated initramfs is missing the CPU
  microcode:

  […]
  dracut: Generating /boot/initrd.img-6.5.0-45-generic
  Mode:           real
  Files:          664
  Linked:         2 files
  Compared:       0 xattrs
  Compared:       21 files
  Saved:          844.81 KiB
  Duration:       0.007279 seconds
  dracut: Generating /boot/initrd.img-6.8.0-40-generic
  dracut: Disabling early microcode, because kernel does not support it. CONFIG_MICROCODE_[AMD|INTEL]!=y
  Mode:           real
  Files:          670
  Linked:         2 files
  Compared:       0 xattrs
  Compared:       18 files
  Saved:          844.81 KiB
  Duration:       0.007241 seconds
  […]

  # cpio -t < /boot/initrd.img-6.8.0-40-generic 2>&1 | grep microcode
  # cpio -t < /boot/initrd.img-6.5.0-45-generic 2>&1 | grep microcode
  kernel/x86/microcode
  kernel/x86/microcode/GenuineIntel.bin

  I think this is the same issue as
  https://issues.redhat.com/browse/RHEL-17902.

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: dracut 051-1
  ProcVersionSignature: Ubuntu 6.5.0-45.45~22.04.1-generic 6.5.13
  Uname: Linux 6.5.0-45-generic x86_64
  ApportVersion: 2.20.11-0ubuntu82.6
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: KDE
  Date: Mon Aug 19 14:41:53 2024
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-12-11 (3173 days ago)
  InstallationMedia: Kubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  PackageArchitecture: all
  SourcePackage: dracut
  UpgradeStatus: No upgrade log present (probably fresh install)

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