[Bug 1891527] Re: systemd unit tests need updates for Linux 5.8 and later

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** Changed in: systemd
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1891527

Title:
  systemd unit tests need updates for Linux 5.8 and later

Status in systemd:
  Fix Released
Status in systemd package in Ubuntu:
  New

Bug description:
  Linux 5.8 allows unprivileged creation of whiteout devices, causing a
  couple of test failures in systemd:

  ====== test-fs-util =======
  /* test_chase_symlinks */
  /* test_unlink_noerrno */
  /* test_readlink_and_make_absolute */
  /* test_var_tmp */
  /* test_dot_or_dot_dot */
  /* test_access_fd */
  /* test_touch_file */
  Assertion 'mknod(a, 0775 | S_IFBLK, makedev(0, 0)) >= 0' failed at src/test/test-fs-util.c:637, function test_touch_file(). Aborting.
  FAIL: test-fs-util (code: 134)
  ...
  ====== test-stat-util =======
  Assertion 'stat(path, &st) >= 0' failed at src/test/test-stat-util.c:126, function test_device_path_make_canonical_one(). Aborting.
  FAIL: test-stat-util (code: 134)

  test-fs-util succeeds in making a character device with major/minor
  0,0, and thus assumes it will be able to create other devices, but it
  cannot.

  test-stat-util assumes that because /run/systemd/inaccessible/chr
  exists /run/systemd/inaccessible/blk should also exist, but it does
  not for the same reason.

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