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[Jürg Häfliger <1751213@xxxxxxxxxxxxxxxxxx>]

** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1751213

Title:
  kernel security test report that the lttng_probe_writeback module is
  tainted on Bionic s390x

Status in ubuntu-kernel-tests:
  Fix Released
Status in linux package in Ubuntu:
  Invalid

Bug description:
  This issue was only spotted on Bionic s390x instances.

    FAIL: test_140_kernel_modules_not_tainted (__main__.KernelSecurityTest)
    kernel modules are not marked with a taint flag (especially 'E' for TAINT_UNSIGNED_MODULE)
    ----------------------------------------------------------------------
    Traceback (most recent call last):
      File "./test-kernel-security.py", line 1727, in test_140_kernel_modules_not_tainted
        self.fail('Module \'%s\' is tainted: %s' % (fields[0], last_field))
    AssertionError: Module 'lttng_probe_writeback' is tainted: (OE)

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.15.0-10-generic 4.15.0-10.11
  ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
  Uname: Linux 4.15.0-10-generic s390x
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  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': 'aplay'
  ApportVersion: 2.20.8-0ubuntu10
  Architecture: s390x
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord'
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  CurrentDmesg:

  Date: Fri Feb 23 07:43:00 2018
  HibernationDevice: RESUME=UUID=caaee9b2-6bc1-4c8e-b26c-69038c092091
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
  Lspci:

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

  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C
   SHELL=/bin/bash
  ProcFB: Error: [Errno 2] No such file or directory: '/proc/fb'
  ProcKernelCmdLine: root=UUID=c7d7bbcb-a039-4ead-abfe-7672dea0add4 crashkernel=196M
  RelatedPackageVersions:
   linux-restricted-modules-4.15.0-10-generic N/A
   linux-backports-modules-4.15.0-10-generic  N/A
   linux-firmware                             1.171
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)

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