dx-packages team mailing list archive

[Matteo Panella <morpheus@xxxxxxxxxxx>]

Public bug reported:

(forwarded from the relevant bug report raised in Debian BTS and adapted
for upstart as PID1)

Daemons which are not spawned via an upstart job (eg. those with
initscripts, ifupdown hooks and similar) are not detached from the
current logind session cgroups. This causes the session to linger in the
closing state until the background processes are either terminated or
manually moved by root into the root cgroups, so seat ACLs are not
released.

A (very crude) workaround on Debian Jessie is using cgm movepidabs / $$
to "break out" of the current session before performing any
administrative action which could result in a daemon (re)start, but
cgmanager is not installed by default on Trusty and the version of cgm
shipped with it lacks the movepidabs subcommand (even though the
MovePidAbs method in the DBus interface does exist).

Note that this affects anything that uses service, invoke-rc.d, ifupdown
hooks (like ifup on PPPoE links) or initscripts directly. Upstart jobs
are not affected because they inherit their cgroup set from PID1 (which
lives in the root cgroup).

Nota bene: I'm raising the issue on systemd-shim on advice from its
maintainer, even though it's unclear at what level this behavior should
be addressed.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: systemd-shim 6-2bzr1
ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8
Uname: Linux 3.13.0-39-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
Date: Fri Nov 14 10:36:01 2014
InstallationDate: Installed on 2012-09-30 (774 days ago)
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
SourcePackage: systemd-shim
UpgradeStatus: Upgraded to trusty on 2014-08-18 (87 days ago)

** Affects: systemd-shim (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: systemd-shim (Debian)
     Importance: Unknown
         Status: Unknown


** Tags: amd64 apport-bug trusty

** Bug watch added: Debian Bug tracker #769483
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=769483

** Also affects: systemd-shim (Debian) via
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=769483
   Importance: Unknown
       Status: Unknown

-- 
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https://bugs.launchpad.net/bugs/1392642

Title:
  Daemons are restarted in the current session cgroups

Status in “systemd-shim” package in Ubuntu:
  New
Status in “systemd-shim” package in Debian:
  Unknown

Bug description:
  (forwarded from the relevant bug report raised in Debian BTS and
  adapted for upstart as PID1)

  Daemons which are not spawned via an upstart job (eg. those with
  initscripts, ifupdown hooks and similar) are not detached from the
  current logind session cgroups. This causes the session to linger in
  the closing state until the background processes are either terminated
  or manually moved by root into the root cgroups, so seat ACLs are not
  released.

  A (very crude) workaround on Debian Jessie is using cgm movepidabs /
  $$ to "break out" of the current session before performing any
  administrative action which could result in a daemon (re)start, but
  cgmanager is not installed by default on Trusty and the version of cgm
  shipped with it lacks the movepidabs subcommand (even though the
  MovePidAbs method in the DBus interface does exist).

  Note that this affects anything that uses service, invoke-rc.d,
  ifupdown hooks (like ifup on PPPoE links) or initscripts directly.
  Upstart jobs are not affected because they inherit their cgroup set
  from PID1 (which lives in the root cgroup).

  Nota bene: I'm raising the issue on systemd-shim on advice from its
  maintainer, even though it's unclear at what level this behavior
  should be addressed.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: systemd-shim 6-2bzr1
  ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8
  Uname: Linux 3.13.0-39-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.14.1-0ubuntu3.5
  Architecture: amd64
  Date: Fri Nov 14 10:36:01 2014
  InstallationDate: Installed on 2012-09-30 (774 days ago)
  InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
  SourcePackage: systemd-shim
  UpgradeStatus: Upgraded to trusty on 2014-08-18 (87 days ago)

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