** Also affects: systemd (Ubuntu Xenial)
   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 Xenial)
       Status: New => Confirmed

** Changed in: systemd (Ubuntu Bionic)
       Status: New => Confirmed

** Changed in: systemd (Ubuntu Xenial)
   Importance: Undecided => High

** Changed in: systemd (Ubuntu Bionic)
   Importance: Undecided => High

** Changed in: systemd (Ubuntu Bionic)
     Assignee: (unassigned) => Heitor Alves de Siqueira (halves)

** Changed in: systemd (Ubuntu Xenial)
     Assignee: (unassigned) => Heitor Alves de Siqueira (halves)

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https://bugs.launchpad.net/bugs/1876600

Title:
  cookie overruns cause org.freedesktop.systemd1 dbus to hang

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Xenial:
  Confirmed
Status in systemd source package in Bionic:
  Confirmed

Bug description:
  [Impact]
  Long-running services overflow the sd_bus->cookie counter, causing further 
communication with org.freedesktop.systemd1 to stall.

  [Description]
  Systemd dbus messages usually include a "cookie" value to uniquely identify 
them in their bus context. For services that run for longer periods of time and 
keep communicating through dbus, it's possible to overflow the cookie value, 
causing further messages to the org.freedesktop.systemd1 dbus to hang.

  This has been fixed upstream by the commit below:
  -  sd-bus: deal with cookie overruns (1f82f5bb4237)

  $ git describe --contains 1f82f5bb4237
  v242-rc1~228

  $ rmadison systemd
   systemd | 229-4ubuntu4     | xenial          | source, ...
   systemd | 229-4ubuntu21.27 | xenial-security | source, ...
   systemd | 229-4ubuntu21.27 | xenial-updates  | source, ...
   systemd | 229-4ubuntu21.28 | xenial-proposed | source, ...
   systemd | 237-3ubuntu10    | bionic          | source, ...
   systemd | 237-3ubuntu10.38 | bionic-security | source, ...
   systemd | 237-3ubuntu10.39 | bionic-updates  | source, ...
   systemd | 237-3ubuntu10.40 | bionic-proposed | source, ... <----
   systemd | 242-7ubuntu3     | eoan            | source, ...

  Releases starting with Eoan already have this fix.

  [Test Case]
  There doesn't seem to be an easy test case for this, as the cookie values 
start at zero and won't overflow until (1<<32). There have been reports from 
users hitting this on Kubernetes clusters continuously running for longer 
periods (~5 months).

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