[Bug 1877159] Re: netlink: 'systemd-network': attribute type 5 has an invalid length.

[Balint Reczey]

** Also affects: systemd (Ubuntu Eoan)
   Importance: Undecided
       Status: New

** Also affects: systemd (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Also affects: systemd (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Changed in: systemd (Ubuntu)
       Status: New => Fix Released

** Changed in: systemd (Ubuntu Eoan)
       Status: New => Fix Released

** Changed in: systemd (Ubuntu Focal)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1877159

Title:
  netlink: 'systemd-network': attribute type 5 has an invalid length.

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Bionic:
  New
Status in systemd source package in Eoan:
  Fix Released
Status in systemd source package in Focal:
  Fix Released

Bug description:
  This morning, our 2 Bionic machine configured with the wireguard's PPA
  and using systemd-networkd to configure the wireguard tunnel started
  misbehaving. Why this started just now is unclear ATM but their dmesg
  was filled with this:

  validate_nla: 100 callbacks suppressed
  netlink: 'systemd-network': attribute type 5 has an invalid length.
  netlink: 'systemd-network': attribute type 5 has an invalid length.
  netlink: 'systemd-network': attribute type 5 has an invalid length.
  netlink: 'systemd-network': attribute type 5 has an invalid length.
  netlink: 'systemd-network': attribute type 5 has an invalid length.
  netlink: 'systemd-network': attribute type 5 has an invalid length.
  netlink: 'systemd-network': attribute type 5 has an invalid length.
  netlink: 'systemd-network': attribute type 5 has an invalid length.
  netlink: 'systemd-network': attribute type 5 has an invalid length.
  netlink: 'systemd-network': attribute type 5 has an invalid length.

  Folks in #systemd mentioned
  https://github.com/systemd/systemd/issues/11575 which points to 2
  commits missing from Bionic's systemd version:

  https://github.com/systemd/systemd/commit/7d0b26a027118ca063780421cb31c74e9d2664ee
  https://github.com/systemd/systemd/commit/624a47694cad4c87b2e807c32db656f3e9d679c5

  Focal's systemd have the above commits. Would it be possible to
  backport those 2 commits to Bionic?

  
  Additional information:

  # uname -a
  Linux noc-eu1 4.15.0-99-generic #100-Ubuntu SMP Wed Apr 22 20:32:56 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

  # apt-cache policy systemd wireguard{,-tools,-dkms}
  systemd:
    Installed: 237-3ubuntu10.39
    Candidate: 237-3ubuntu10.39
    Version table:
   *** 237-3ubuntu10.39 500
          500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
          100 /var/lib/dpkg/status
       237-3ubuntu10.38 500
          500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
       237-3ubuntu10 500
          500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
  wireguard:
    Installed: 1.0.20200319-1ubuntu1~18.04
    Candidate: 1.0.20200319-1ubuntu1~18.04
    Version table:
   *** 1.0.20200319-1ubuntu1~18.04 500
          500 http://ppa.launchpad.net/wireguard/wireguard/ubuntu bionic/main amd64 Packages
          500 http://ppa.launchpad.net/wireguard/wireguard/ubuntu bionic/main i386 Packages
          100 /var/lib/dpkg/status
  wireguard-tools:
    Installed: 1.0.20200319-1ubuntu1~18.04
    Candidate: 1.0.20200319-1ubuntu1~18.04
    Version table:
   *** 1.0.20200319-1ubuntu1~18.04 500
          500 http://ppa.launchpad.net/wireguard/wireguard/ubuntu bionic/main amd64 Packages
          100 /var/lib/dpkg/status
  wireguard-dkms:
    Installed: 1.0.20200429-2~18.04
    Candidate: 1.0.20200429-2~18.04
    Version table:
   *** 1.0.20200429-2~18.04 500
          500 http://ppa.launchpad.net/wireguard/wireguard/ubuntu bionic/main amd64 Packages
          500 http://ppa.launchpad.net/wireguard/wireguard/ubuntu bionic/main i386 Packages
          100 /var/lib/dpkg/status

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