[Bug 1995469] Re: Version 0.6.7-3 is broken for "del" operations on recent kernels

[Brian Murray]

Hello Eugene, or anyone else affected,

Accepted pyroute2 into kinetic-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/pyroute2/0.6.7-3ubuntu1 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
kinetic to verification-done-kinetic. If it does not fix the bug for
you, please add a comment stating that, and change the tag to
verification-failed-kinetic. In either case, without details of your
testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: pyroute2 (Ubuntu Kinetic)
       Status: Triaged => Fix Committed

** Tags added: verification-needed verification-needed-kinetic

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https://bugs.launchpad.net/bugs/1995469

Title:
  Version 0.6.7-3 is broken for "del" operations on recent kernels

Status in Ubuntu Cloud Archive:
  Fix Released
Status in Ubuntu Cloud Archive zed series:
  Triaged
Status in pyroute2 package in Ubuntu:
  Fix Released
Status in pyroute2 source package in Kinetic:
  Fix Committed

Bug description:
  [Impact]

  Because of this bug upstream
  https://github.com/svinota/pyroute2/issues/923, in the versions of
  pyroute2 prior to 0.6.10, all delete operations (address, link, route,
  ...) fail with 'Operation not supported'.

  This is related to the kernel commit
  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a6cec0bcd34264be8887791594be793b3f12719f

  Pyroute package has to be upgraded to a version 0.6.10 or later as
  long as the distro comes with the kernel that contains the above
  commit.

  Reproducer:

  $ sudo python3
  Python 3.10.7 (main, Sep  8 2022, 14:34:29) [GCC 12.2.0] on linux
  Type "help", "copyright", "credits" or "license" for more information.
  >>> from pyroute2 import IPRoute
  >>> IPRoute().link("add", ifname="dum0", kind="dummy")
  ({'header': {'length': 36, 'type': 2, 'flags': 256, 'sequence_number': 255, 'pid': 4993, 'error': None, 'target': 'localhost', 'stats': Stats(qsize=0, delta=0, delay=0)}, 'event': 'NLMSG_ERROR'},)
  >>> IPRoute().link_lookup(ifname="dum0")
  [10]
  >>> IPRoute().link("del", ifname="dum0")
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
    File "/usr/lib/python3/dist-packages/pr2modules/iproute/linux.py", line 1489, in link
      ret = self.nlm_request(msg, msg_type=command, msg_flags=msg_flags)
    File "/usr/lib/python3/dist-packages/pr2modules/netlink/nlsocket.py", line 401, in nlm_request
      return tuple(self._genlm_request(*argv, **kwarg))
    File "/usr/lib/python3/dist-packages/pr2modules/netlink/nlsocket.py", line 906, in nlm_request
      for msg in self.get(
    File "/usr/lib/python3/dist-packages/pr2modules/netlink/nlsocket.py", line 404, in get
      return tuple(self._genlm_get(*argv, **kwarg))
    File "/usr/lib/python3/dist-packages/pr2modules/netlink/nlsocket.py", line 732, in get
      raise msg['header']['error']
  pr2modules.netlink.exceptions.NetlinkError: (95, 'Operation not supported')

  ProblemType: Bug
  DistroRelease: Ubuntu 22.10
  Package: python3-pyroute2 0.6.7-3
  ProcVersionSignature: Ubuntu 5.19.0-23.24-generic 5.19.7
  Uname: Linux 5.19.0-23-generic x86_64
  ApportVersion: 2.23.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Nov  2 10:44:29 2022
  InstallationDate: Installed on 2021-08-18 (440 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  PackageArchitecture: all
  SourcePackage: pyroute2
  UpgradeStatus: Upgraded to kinetic on 2022-10-23 (9 days ago)

  [Test Case]

  There is a small reproducer above that Eugene included in the bug
  report.

  Additionally we can use the standard charm-deployed regression test
  suite to test kinetic-zed support. nova-compute units can be inspected
  to see if the 'Operation not supported' errors are no longer produced
  in /var/log/neutron/neutron-ovn-metadata-agent.log.

  [Regression Potential]

  The patch has already landed in releases of pyroute2 0.6.10 and above.
  Since pyroute2 is also backported to the zed cloud archive (which is
  on jammy) we'll need to ensure that this patch behaves as expected
  with jammy-zed deploys as well.

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