[Bug 2056078] [NEW] 6.8 Kernel AppArmor Feature Missing on Noble

[Jess Jang]

Public bug reported:

After the 6.8 rolled out the public cloud team pre publication test were
failing on our snap_preseed_optimized test which checks to ensure that
snaps are preseeded correctly

This test checks the output of `snap debug seeding` to assert `seed-
completion` is present and not empty.

With the recent kernel update this test is failing which indicates a kernel feature mismatch between
the running kernel and the feature set hard-coded in livecd-rootfs for this image.

This will cause boot time to lower about ~200ms.

Proposed MP is adding 6.8 apparmor features to noble branch of livecd-
rootfs

Related bugs LP: #2052789

[ Impact ]

Boot will be slowed by ~200ms until this is resolved in livecd-rootfs

[ Test Plan ]

 * build any noble cloud image with 6.8 kernel
 * boot
 * run `snap debug preseed`
 * assert the test described above passes

[ Where problems could occur ]

 * Similar patches already exist for later releases 6.2, 6.5 kernel etc.
and have been used on other private customer kernels and all kernels
released after 22.04, so there is already a good track record for this
patchset and it shouldn't create any issues.

[ Other Info ]

 * This is a time-sensitive issue for a paying customer

** Affects: livecd-rootfs (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2056078

Title:
  6.8 Kernel AppArmor Feature Missing on Noble

Status in livecd-rootfs package in Ubuntu:
  New

Bug description:
  After the 6.8 rolled out the public cloud team pre publication test
  were failing on our snap_preseed_optimized test which checks to ensure
  that snaps are preseeded correctly

  This test checks the output of `snap debug seeding` to assert `seed-
  completion` is present and not empty.

  With the recent kernel update this test is failing which indicates a kernel feature mismatch between
  the running kernel and the feature set hard-coded in livecd-rootfs for this image.

  This will cause boot time to lower about ~200ms.

  Proposed MP is adding 6.8 apparmor features to noble branch of livecd-
  rootfs

  Related bugs LP: #2052789

  [ Impact ]

  Boot will be slowed by ~200ms until this is resolved in livecd-rootfs

  [ Test Plan ]

   * build any noble cloud image with 6.8 kernel
   * boot
   * run `snap debug preseed`
   * assert the test described above passes

  [ Where problems could occur ]

   * Similar patches already exist for later releases 6.2, 6.5 kernel
  etc. and have been used on other private customer kernels and all
  kernels released after 22.04, so there is already a good track record
  for this patchset and it shouldn't create any issues.

  [ Other Info ]

   * This is a time-sensitive issue for a paying customer

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