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The test fails:

  # ./test_offload.py
  [...]
  Test bpftool bound info reporting (own ns)...
  FAIL: 3 BPF maps loaded, expected 2
    File "/root/bpf-next/tools/testing/selftests/bpf/./test_offload.py", line 1177, in <module>
      check_dev_info(False, "")
    File "/root/bpf-next/tools/testing/selftests/bpf/./test_offload.py", line 645, in check_dev_info
      maps = bpftool_map_list(expected=2, ns=ns)
    File "/root/bpf-next/tools/testing/selftests/bpf/./test_offload.py", line 190, in bpftool_map_list
      fail(True, "%d BPF maps loaded, expected %d" %
    File "/root/bpf-next/tools/testing/selftests/bpf/./test_offload.py", line 86, in fail
      tb = "".join(traceback.extract_stack().format())

Some base maps do not have names and they cannot be added due to compatibility
with older kernels, see [0]. So, just skip the unnamed maps.

  [0] https://lore.kernel.org/bpf/CAEf4BzY66WPKQbDe74AKZ6nFtZjq5e+G3Ji2egcVytB9R6_sGQ@mail.gmail.com/

Signed-off-by: Yauheni Kaliuta <ykaliuta@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/bpf/20220329081100.9705-1-ykaliuta@redhat.com