noble/linux-realtime: 6.8.0-1007.18 -proposed tracker

[Joseph Salisbury]

This bug will contain status and test results related to a kernel source (or snap) as stated in the title.

For an explanation of the tasks and the associated workflow see:
  https://wiki.ubuntu.com/Kernel/kernel-sru-workflow

-- swm properties --
built:
  from: 7958de5251b69f5b
  route-entry: 1
delta:
  promote-to-proposed: [main, meta, signed, generate]
flag:
  boot-testing-requested: true
  proposed-announcement-sent: true
  proposed-testing-requested: true
packages:
  generate: linux-generate-realtime
  main: linux-realtime
  meta: linux-meta-realtime
  signed: linux-signed-realtime
phase: Testing
phase-changed: Thursday, 21. March 2024 04:02 UTC
reason:
  regression-testing: Stalled -s testing FAILED
synthetic:
  :promote-to-as-proposed: Fix Released
variant: debs
versions:
  main: 6.8.0-1007.18
  meta: 6.8.0-1007.18
  signed: 6.8.0-1007.18
~~:
  announce:
    swm-transition-crankable: 2024-03-11 16:52:28.352137
  clamps:
    new-review: 7958de5251b69f5b
    promote-to-proposed: 7958de5251b69f5b
    self: 6.8.0-1007.18
    sru-review: 7958de5251b69f5b
  tracker:
    last-message: '2024-03-20 17:37:53.571786+00:00'

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

New kernel with signed kernels; signing-review required.

[Joseph Salisbury (jsalisbury)]

Test Results for verification of Secure Boot / Kernel Lockdown:

AMD64:
$ uname -a
Linux noblerealtime-secureboot-vm 6.8.0-1007-realtime #18-Ubuntu SMP PREEMPT_RT Thu Mar 14 20:40:09 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

$ sudo dmesg | grep "Secure boot"
[ 0.000000] secureboot: Secure boot enabled
[ 0.007582] secureboot: Secure boot enabled

$ cat /sys/kernel/security/lockdown
none [integrity] confidentiality

ARM64:
$ uname -a
Linux noblerealtime-secureboot-vm 6.8.0-1007-realtime #18-Ubuntu SMP PREEMPT_RT Thu Mar 14 23:21:19 UTC 2024 aarch64 aarch64 aarch64 GNU/Linux

$ sudo dmesg | grep "Secure boot"
[ 0.000000] secureboot: Secure boot enabled

$ cat /sys/kernel/security/lockdown
none [integrity] confidentiality