mantic:linux: ubuntu_qrt_apparmor: ApparmorTestsuites.test_regression_testsuiteattach_disconnected.

Hi!

Could you share the kernel and apparmor version?
I tested on mantic with the configuration below and I wasn't able to reproduce the failure for this specific test.
I did see an unrelated dbus issue with the test suite and proposed a fixed on https://code.launchpad.net/~georgiag/qa-regression-testing/+git/qa-regression-testing/+merge/453056

georgia@sec-mantic-amd64:~/qrt-test-apparmor$ sudo ./test-apparmor.py ApparmorTestsuites.test_regression_testsuite
[sudo] password for georgia:
Skipping private tests

  preparing apparmor_4.0.0~alpha2-0ubuntu5.dsc... done

 (disabling ptrace for this test)
.
----------------------------------------------------------------------
Ran 1 test in 574.715s

OK
georgia@sec-mantic-amd64:~/qrt-test-apparmor$ uname -a
Linux sec-mantic-amd64 6.5.0-7-generic #7-Ubuntu SMP PREEMPT_DYNAMIC Fri Sep 29 09:14:56 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
georgia@sec-mantic-amd64:~/qrt-test-apparmor$ apt-cache policy apparmor
apparmor:
  Installed: 4.0.0~alpha2-0ubuntu5
  Candidate: 4.0.0~alpha2-0ubuntu5
  Version table:
 *** 4.0.0~alpha2-0ubuntu5 500
        500 http://archive.ubuntu.com/ubuntu mantic/main amd64 Packages
        100 /var/lib/dpkg/status
georgia@sec-mantic-amd64:~/qrt-test-apparmor$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu Mantic Minotaur (development branch)
Release: 23.10
Codename: mantic

I was going over the ADT results for the complete linux suite: https://autopkgtest.ubuntu.com/results/autopkgtest-mantic/mantic/amd64/l/linux/20231002_144159_55314@/log.gz (6.5.0-7.7)