/sys/module/<module>/sections/.text is now 0400 instead of 0444

[Thadeu Lima de Souza Cascardo]

When running the kernel security tests from qa-regression-testing, it fails to run 'sudo -u <user> cat /sys/module/<module>/sections/.text', because it's now only owner-readable, instead of world-readable.

The failure is copied below.

This has been changes on 4.15-rc1 by commit
277642dcca765a1955d4c753a5a315ff7f2eb09d ("modules: make sysfs attribute files readable by owner only").

We either want to revert that upstream or fix the test.

  ======================================================================
  FAIL: test_095_kernel_symbols_missing (__main__.KernelSecurityTest)
  kernel addresses in kallsyms and modules are zeroed out
  ----------------------------------------------------------------------
  Traceback (most recent call last):
    File "./test-kernel-security.py", line 1508, in test_095_kernel_symbols_missing
      self._check_pK_files(expected)
    File "./test-kernel-security.py", line 1449, in _check_pK_files
      expected)
    File "./test-kernel-security.py", line 1387, in _read_twice
      self.assertEqual(rc, 0, regular)
  AssertionError: cat: /sys/module/virtio_blk/sections/.text: Permission denied

  ----------------------------------------------------------------------
  Ran 76 tests in 22.227s

  FAILED (failures=1)
 END ERROR ubuntu_qrt_kernel_security.test-kernel-security.py ubuntu_qrt_kernel_security.test-kernel-security.py timestamp=1521472107 localtime=Mar 19 15:08:27