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Reviewed:  https://review.openstack.org/631654
Committed: https://git.openstack.org/cgit/openstack/neutron-fwaas/commit/?id=55874d06b1ce80b44356310c930f80e834d83a8a
Submitter: Zuul
Branch:    master

commit 55874d06b1ce80b44356310c930f80e834d83a8a
Author: Akihiro Motoki <amotoki@xxxxxxxxx>
Date:   Fri Jan 18 06:29:33 2019 +0900

    Change netns tests with oslo.privsep to check netns links
    
    It turns out that pyroute2.netns.setns() changes a network
    namespace of a thread instead of that of a process when it is
    called in a thread [1].
    
    What we actually would like to check in test_in_namespace test
    is whether operations against a network namespace work with
    oslo.privsep expectedly. There is no need to check namespace inode.
    
    This commit changes test_in_namespace test to check a list of
    network devices in a namespace to check netns operation works
    correctly. What the new test does are:
    - create a network namespace for testing
    - create a veth pair and move one of them to the network namespace
    - call oslo.privsep entrypoint function to retrieve a list of
      network devices inside the netns
    
    [1] http://lists.openstack.org/pipermail/openstack-discuss/2019-January/001761.html
    
    Closes-Bug: #1811506
    Change-Id: Ie5b238f1df707ea3ce50b5711ff791bac2681a2f


** Changed in: neutron
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1811506

Title:
  neutron-fwaas-dsvm-functional tests failing with oslo.privsep 1.31

Status in neutron:
  Fix Released

Bug description:
  It looks like a neutron-fwaas version of bug 1810518.

  http://logs.openstack.org/82/527282/8/check/legacy-neutron-fwaas-dsvm-
  functional/e6d294b/

  ft2.1: neutron_fwaas.tests.functional.privileged.test_netlink_lib.NetlinkLibTestCaseIPv6.test_flush_entries_StringException: Traceback (most recent call last):
    File "/opt/stack/new/neutron-fwaas/.tox/dsvm-functional/local/lib/python2.7/site-packages/neutron/tests/base.py", line 150, in func
      return f(self, *args, **kwargs)
    File "neutron_fwaas/tests/functional/privileged/test_netlink_lib.py", line 185, in test_flush_entries
      nl_lib.flush_entries(namespace)
    File "/opt/stack/new/neutron-fwaas/.tox/dsvm-functional/local/lib/python2.7/site-packages/oslo_privsep/priv_context.py", line 214, in _wrap
      return self.channel.remote_call(name, args, kwargs)
    File "/opt/stack/new/neutron-fwaas/.tox/dsvm-functional/local/lib/python2.7/site-packages/oslo_privsep/daemon.py", line 194, in remote_call
      result = self.send_recv((Message.CALL.value, name, args, kwargs))
    File "/opt/stack/new/neutron-fwaas/.tox/dsvm-functional/local/lib/python2.7/site-packages/oslo_privsep/comm.py", line 163, in send_recv
      self.writer.send((myid, msg))
    File "/opt/stack/new/neutron-fwaas/.tox/dsvm-functional/local/lib/python2.7/site-packages/oslo_privsep/comm.py", line 55, in send
      self.writesock.sendall(buf)
    File "/opt/stack/new/neutron-fwaas/.tox/dsvm-functional/local/lib/python2.7/site-packages/eventlet/greenio/base.py", line 401, in sendall
      tail = self.send(data, flags)
    File "/opt/stack/new/neutron-fwaas/.tox/dsvm-functional/local/lib/python2.7/site-packages/eventlet/greenio/base.py", line 395, in send
      return self._send_loop(self.fd.send, data, flags)
    File "/opt/stack/new/neutron-fwaas/.tox/dsvm-functional/local/lib/python2.7/site-packages/eventlet/greenio/base.py", line 382, in _send_loop
      return send_method(data, *args)
  socket.error: [Errno 32] Broken pipe

  I also see segfault in syslog.

  kernel: privsep-helper[1477]: segfault at 740f9ac0 ip 00007f8e71f69a32
  sp 00007f8e7af2d428 error 6 in
  libnetfilter_conntrack.so.3.5.0[7f8e71f62000+1a000]

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