Public bug reported:

Similar to bug 1760654.

But this time the test_072_strict_devmem passed on the testing node.
And the test_140_kernel_modules_not_tainted test still failed with the same 
error message:

  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 1865, in 
test_140_kernel_modules_not_tainted
      self.fail('Module \'%s\' is tainted: %s' % (fields[0], last_field))
  AssertionError: Module 'signpost' is tainted: (OE)

If you try to remove the module after this, you will get:
$ sudo rmmod signpost
rmmod: ERROR: Module signpost is in use

And the lsmod shows:
$ lsmod | grep signpost
signpost               12288  -2

>From the Internet [1], the "-2" here indicates that the CONFIG_MODULE_UNLOAD 
>is not set.
Which is true for the Bionic KVM kernel.

$ grep -i CONFIG_MODULE_UNLOAD debian.kvm/config/config.common.ubuntu
# CONFIG_MODULE_UNLOAD is not set

https://unix.stackexchange.com/questions/269500/lsmod-shows-2-in-the-
used-by-colum

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-1008-kvm 4.15.0-1008.8
ProcVersionSignature: User Name 4.15.0-1008.8-kvm 4.15.17
Uname: Linux 4.15.0-1008-kvm x86_64
NonfreeKernelModules: signpost
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
Date: Wed Apr 25 08:35:29 2018
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-kvm
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: linux-kvm (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug bionic uec-images

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-kvm in Ubuntu.
https://bugs.launchpad.net/bugs/1766832

Title:
  test_140_kernel_modules_not_tainted in kernel security test failed
  with 4.15 kvm kernel

Status in linux-kvm package in Ubuntu:
  New

Bug description:
  Similar to bug 1760654.

  But this time the test_072_strict_devmem passed on the testing node.
  And the test_140_kernel_modules_not_tainted test still failed with the same 
error message:

    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 1865, in 
test_140_kernel_modules_not_tainted
        self.fail('Module \'%s\' is tainted: %s' % (fields[0], last_field))
    AssertionError: Module 'signpost' is tainted: (OE)

  If you try to remove the module after this, you will get:
  $ sudo rmmod signpost
  rmmod: ERROR: Module signpost is in use

  And the lsmod shows:
  $ lsmod | grep signpost
  signpost               12288  -2

  From the Internet [1], the "-2" here indicates that the CONFIG_MODULE_UNLOAD 
is not set.
  Which is true for the Bionic KVM kernel.

  $ grep -i CONFIG_MODULE_UNLOAD debian.kvm/config/config.common.ubuntu
  # CONFIG_MODULE_UNLOAD is not set

  https://unix.stackexchange.com/questions/269500/lsmod-shows-2-in-the-
  used-by-colum

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.15.0-1008-kvm 4.15.0-1008.8
  ProcVersionSignature: User Name 4.15.0-1008.8-kvm 4.15.17
  Uname: Linux 4.15.0-1008-kvm x86_64
  NonfreeKernelModules: signpost
  ApportVersion: 2.20.9-0ubuntu7
  Architecture: amd64
  Date: Wed Apr 25 08:35:29 2018
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  SourcePackage: linux-kvm
  UpgradeStatus: No upgrade log present (probably fresh install)

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