containers in ubuntu_ltp_stable and cve-2018-18955 in ubuntu_ltp_cve fail on Noble

[Kevin Becker]

Both the containers test in ubuntu_ltp_stable and cve-2018-18955 in ubuntu_ltp_cve fail with a similar error on Noble. This happens on multiple noble kernels, including generic, realtime, and ibm. The following error references a commit, but these kernels have that commit applied. The errors are as follows:

containers in ubuntu_ltp_stable:

 18189 13:55:14 DEBUG| [stdout] userns08.c:80: TBROK: setgid(0) failed: EPERM (1)
 18190 13:55:14 DEBUG| [stdout]
 18191 13:55:14 DEBUG| [stdout] HINT: You _MAY_ be missing kernel fixes:
 18192 13:55:14 DEBUG| [stdout]
 18193 13:55:14 DEBUG| [stdout] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d2f007dbe7e4

cve-2018-18955 in ubuntu_ltp_cve:

 40826 userns08.c:80: TBROK: setgid(0) failed: EPERM (1)
 40827
 40828 HINT: You _MAY_ be missing kernel fixes:
 40829
 40830 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d2f007dbe7e4

[Juerg Haefliger (juergh)]

This looks like an apparmor regression. Disabling apparmor makes the test pass.

https://bugs.launchpad.net/kernel-sru-workflow/+bug/2057941/comments/3