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[Po-Hsu Lin <po-hsu.lin@xxxxxxxxxxxxx>]

** Also affects: qa-regression-testing
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1813721

Title:
  SECURITY_SELINUX_DISABLE should be enable on X s390x

Status in QA Regression Testing:
  New
Status in ubuntu-kernel-tests:
  In Progress
Status in linux package in Ubuntu:
  Invalid
Status in linux source package in Xenial:
  In Progress

Bug description:
  == SRU Justification ==
  Security team requires the CONFIG_SECURITY_SELINUX_DISABLE should be
  enabled in all of our kernels.

  Currently it's not enabled for s390x in Xenial. And causing the
  test_081_config_security_selinux_disable test in ubuntu_kernel_security
  test suite complaining about this:

    ======================================================================
    FAIL: test_081_config_security_selinux_disable (__main__.KernelSecurityConfigTest)
    Ensure CONFIG_SECURITY_SELINUX_DISABLE is disabled (LP: #1680315)
    ----------------------------------------------------------------------
    Traceback (most recent call last):
      File "./test-kernel-security.py", line 2158, in test_081_config_security_selinux_disable
        self.assertKernelConfig('SECURITY_SELINUX_DISABLE', expected)
      File "./test-kernel-security.py", line 207, in assertKernelConfig
        self.assertKernelConfigSet(name)
      File "./test-kernel-security.py", line 194, in assertKernelConfigSet
        '%s option was expected to be set in the kernel config' % name)
    AssertionError: SECURITY_SELINUX_DISABLE option was expected to be set in the kernel config

  == Test ==
  A test kernel could be found here:
  https://people.canonical.com/~phlin/kernel/lp-1813721-s390x-selinux/

  This issue can be verified with a q-r-t test:
  test_081_config_security_selinux_disable, the test will pass with the
  patched kernel.

    test_081_config_security_selinux_disable (__main__.KernelSecurityConfigTest)
    Ensure CONFIG_SECURITY_SELINUX_DISABLE is disabled (LP: #1680315) ... (skipped: l) ok

  == Regression Potential ==
  Low, we already have this config enabled in all kernels except this
  specific Xenial s390x.


  ----------------------------------------------------------------------

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-142-generic 4.4.0-142.168
  ProcVersionSignature: Ubuntu 4.4.0-142.168-generic 4.4.167
  Uname: Linux 4.4.0-142-generic s390x
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access '/dev/snd/': No such file or directory
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: s390x
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  CurrentDmesg:

  Date: Tue Jan 29 02:30:42 2019
  HibernationDevice: RESUME=UUID=ca468a9c-9563-442c-85c6-6055e800a66e
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
  Lspci:

  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  PciMultimedia:

  ProcFB: Error: [Errno 2] No such file or directory: '/proc/fb'
  ProcKernelCmdLine: root=UUID=b65b756a-ba4e-4c53-aa32-0db2bdb50bb3 crashkernel=196M
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-142-generic N/A
   linux-backports-modules-4.4.0-142-generic  N/A
   linux-firmware                             1.157.21
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)

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