[Bug 1058517] Re: upgrade of dbus causes unclean unmount of /

[Steve Langasek]

until we have stateful reexec handling in upstart, dbus needs to set a
flag to tell the system to re-exec upstart on shutdown so we can cleanly
unmount (/var/run/init.upgraded).  See the upstart postinst for details,
and bug #441796 for history.

** Changed in: dbus (Ubuntu)
       Status: Confirmed => Triaged

** Also affects: dbus (Ubuntu Precise)
   Importance: Undecided
       Status: New

** Also affects: dbus (Ubuntu Quantal)
   Importance: High
       Status: Triaged

** Changed in: dbus (Ubuntu Precise)
       Status: New => Triaged

** Changed in: dbus (Ubuntu Precise)
   Importance: Undecided => High

** Changed in: dbus (Ubuntu Precise)
     Assignee: (unassigned) => Ubuntu Security Team (ubuntu-security)

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Title:
  upgrade of dbus causes unclean unmount of /

Status in APT:
  Invalid
Status in “dbus” package in Ubuntu:
  Triaged
Status in “dbus” source package in Precise:
  Triaged
Status in “dbus” source package in Quantal:
  Triaged

Bug description:
  Running on Amazon Web Services AMI ami-057bcf6c (which is the official
  release from Ubuntu Availalbe at http://uec-
  images.ubuntu.com/releases/precise/release-20120822/ )

  upon first start run

  sudo apt-get update
  sudo apt-get upgrade

  it will tell you a restart is required when you next log in via ssh

  restart the server

  try to ssh in again and your keyfile will not work anymore

  This is a major problem for AWS users as we can't access a console and
  there is no way to reset the keyfile and thus you are locked out of
  your server for ever.  I've reproduced this once on a separate
  instance.

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