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

[Niklas Sombert]

Public bug reported:

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)

** Affects: dracut (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug jammy

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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:
  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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