[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Launchpad Bug Tracker]

This bug was fixed in the package openssh - 1:7.2p2-4ubuntu2.1

---
openssh (1:7.2p2-4ubuntu2.1) xenial-security; urgency=medium

  * SECURITY UPDATE: user enumeration via covert timing channel
- debian/patches/CVE-2016-6210-1.patch: determine appropriate salt for
  invalid users in auth-passwd.c, openbsd-compat/xcrypt.c.
- debian/patches/CVE-2016-6210-2.patch: mitigate timing of disallowed
  users PAM logins in auth-pam.c.
- debian/patches/CVE-2016-6210-3.patch: search users for one with a
  valid salt in openbsd-compat/xcrypt.c.
- CVE-2016-6210
  * SECURITY UPDATE: denial of service via long passwords
- debian/patches/CVE-2016-6515.patch: skip passwords longer than 1k in
  length in auth-passwd.c.
- CVE-2016-6515

 -- Marc Deslauriers   Thu, 11 Aug 2016
08:38:27 -0400

** Changed in: openssh (Ubuntu Xenial)
   Status: Fix Committed => Fix Released

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2016-6210

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2016-6515

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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  Fix Released
Status in openssh source package in Xenial:
  Fix Released
Status in openssh package in Debian:
  Fix Released

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Shayne Hardesty]

Hi Brian,

I have tested the updated packages (1:7.2p2-4ubuntu2) and can confirm
that they resolve the issue for us.  Tags updated.

** Tags removed: verification-needed
** Tags added: verification-done

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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  Fix Released
Status in openssh source package in Xenial:
  Fix Committed
Status in openssh package in Debian:
  Fix Released

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Mathew Hodson]

** Changed in: openssh (Ubuntu Xenial)
   Importance: Undecided => Low

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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  Fix Released
Status in openssh source package in Xenial:
  Fix Committed
Status in openssh package in Debian:
  Fix Released

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Brian Murray]

Hello Gustavo, or anyone else affected,

Accepted openssh into xenial-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/openssh/1:7.2p2-4ubuntu2 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 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, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

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

** Changed in: openssh (Ubuntu Xenial)
   Status: In Progress => Fix Committed

** Tags added: verification-needed

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You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  Fix Released
Status in openssh source package in Xenial:
  Fix Committed
Status in openssh package in Debian:
  Fix Released

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1584393/+subscriptions

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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Martin Pitt]

I uploaded a xenial fix to the SRU review queue.

** Changed in: openssh (Ubuntu Xenial)
   Status: Confirmed => In Progress

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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  Fix Released
Status in openssh source package in Xenial:
  In Progress
Status in openssh package in Debian:
  Fix Released

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1584393/+subscriptions

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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Launchpad Bug Tracker]

This bug was fixed in the package openssh - 1:7.2p2-8

---
openssh (1:7.2p2-8) unstable; urgency=medium

  [ Colin Watson ]
  * Stop enabling ssh-session-cleanup.service by default; instead, ship it
as an example and add a section to README.Debian.  libpam-systemd >= 230
and "UsePAM yes" should take care of the original problem for most
systemd users (thanks, Michael Biebl; closes: #832155).

  [ Martin Pitt ]
  * Add debian/agent-launch: Helper script for conditionally starting the SSH
agent in the user session. Use it in ssh-agent.user-session.upstart.
  * Add systemd user unit for graphical sessions that use systemd. Override
the corresponding upstart job in that case (closes: #832445).
  * debian/openssh-server.if-up: Don't block on a finished reload of
openssh.service, to avoid deadlocking with restarting networking.
(closes: #832557, LP: #1584393)

 -- Colin Watson   Fri, 29 Jul 2016 02:51:32 +0100

** Changed in: openssh (Ubuntu)
   Status: In Progress => Fix Released

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You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  Fix Released
Status in openssh source package in Xenial:
  Confirmed
Status in openssh package in Debian:
  Fix Released

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Bug Watch Updater]

** Changed in: openssh (Debian)
   Status: New => Fix Released

-- 
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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  In Progress
Status in openssh source package in Xenial:
  Confirmed
Status in openssh package in Debian:
  Fix Released

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Bug Watch Updater]

** Changed in: openssh (Debian)
   Status: Unknown => New

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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  In Progress
Status in openssh source package in Xenial:
  Confirmed
Status in openssh package in Debian:
  New

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Martin Pitt]

I forwarded the patch to Debian, as we currently keep the package in
sync and Colin wants to keep it that way. I'll SRU this to xenial once
it lands in yakkety.

** Bug watch added: Debian Bug tracker #832557
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=832557

** Also affects: openssh (Debian) via
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=832557
   Importance: Unknown
   Status: Unknown

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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  In Progress
Status in openssh source package in Xenial:
  Confirmed
Status in openssh package in Debian:
  Unknown

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Shayne Hardesty]

This looks good as well - reverted to an original (unpatched) image and
verified the timeout was present..  Applied this patch and I haven't
been able to reproduce the timeout.

-- 
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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  In Progress
Status in openssh source package in Xenial:
  Confirmed

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Martin Pitt]

> --job-mode=ignore-dependencies still keeps ReloadPropagatedTo=. If
not, we need something else.

It doesn't, and indeed that would make --job-mode=ignore-dependencies a
bit pointless. So we would apply this generally, we would break e. g.
some postinst script that does "invoke-rc.d openvpn  reload", and the
reload of openvpn.service should then be propagated to all
openvpn@*.service instances.

So let's be more cautious here and limit this to openssh. Please revert
the patch to invoke-rc.d (sudo apt-get install --reinstall init-system-
helpers), and run


   sudo patch /etc/network/if-up.d/openssh-server /tmp/openssh-server.patch

instead, and verify that this helps? Thanks!

** Patch added: "proposed patch to /etc/network/if-up.d/openssh-server"
   
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1584393/+attachment/4701238/+files/openssh-server.patch

** Also affects: openssh (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Changed in: openssh (Ubuntu Xenial)
   Status: New => Confirmed

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  In Progress
Status in openssh source package in Xenial:
  Confirmed

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1584393/+subscriptions

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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Martin Pitt]

I discussed that patch with Michael Biebl -- we need to ensure that this
does not break things like openvpn.service → openvpn@.service, i. e.
that --job-mode=ignore-dependencies still keeps ReloadPropagatedTo=. If
not, we need something else.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to openssh in Ubuntu.
https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  In Progress

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1584393/+subscriptions

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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Martin Pitt]

I discussed that patch with Michael Biebl -- we need to ensure that this
does not break things like openvpn.service → openvpn@.service, i. e.
that --job-mode=ignore-dependencies still keeps ReloadPropagatedTo=. If
not, we need something else.

** Changed in: openssh (Ubuntu)
   Status: Incomplete => In Progress

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to openssh in Ubuntu.
https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  In Progress

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1584393/+subscriptions

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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Shayne Hardesty]

My initial testing on this looks good - after applying the patch I
wasn't able to trigger the timeout that we were seeing before.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to openssh in Ubuntu.
https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  Incomplete

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1584393/+subscriptions

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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Ubuntu Foundations Team Bug Bot]

** Tags added: patch

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to openssh in Ubuntu.
https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  Incomplete

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Martin Pitt]

I still cannot reproduce this. In a xenial cloud instance I ran

   for i in `seq 50`; do systemctl reset-failed networking; systemctl restart 
networking; 
done

successfully, this is with a standard /etc/network/interfaces.d/50
-cloud-init.cfg with just "auto ens3" and "iface ens3 inet dhcp" and no
other interface (besides lo).

We can fix this case more centrally in invoke-rc.d though; this is only
safe for "reload" and "force-reload", but that will cover this
networking/openssh deadlock.

If you can reproduce this, please apply this patch to invoke-rc.d:

   sudo patch /usr/sbin/invoke-rc.d /tmp/invoke-rc.d.patch

and confirm that this fixes it. Thanks!

** Patch added: "invoke-rc.d patch"
   
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1584393/+attachment/4700609/+files/invoke-rc.d.patch

** Changed in: openssh (Ubuntu)
 Assignee: (unassigned) => Martin Pitt (pitti)

** Changed in: openssh (Ubuntu)
   Status: Triaged => Incomplete

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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  Incomplete

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Martin Pitt]

This indeed looks like a deadlock. It could  be broken by openssh's if-
up.d script if it reloads ssh asynchronously instead of blocking on it.
It would be even better to finally get rid of this silly hack and make
openssh use IP_FREEBIND properly :-)

I'm very reluctant to make invoke-rc.d reload itself async. This is too
regression prone, as a scripts might depend on the reload actually being
done after the call.

Also, low priority. Restarting "networking" has never worked under
upstart at all, and it mostly works now (can't reproduce this on several
machines). So this is mostly a case of "don't do that then"..

** Package changed: ifupdown (Ubuntu) => openssh (Ubuntu)

** Changed in: openssh (Ubuntu)
   Importance: Undecided => Low

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

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in openssh package in Ubuntu:
  Triaged

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Dan Watkins]

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

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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in ifupdown package in Ubuntu:
  Confirmed

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Dan Watkins]

I've reproduced this on GCE also.  Here's what ssh.service looks like
during the hang (and it looks like the reload hasn't affected it):

$ sudo systemctl status ssh.service
● ssh.service - OpenBSD Secure Shell server
   Loaded: loaded (/lib/systemd/system/ssh.service; enabled; vendor preset: 
enabled)
   Active: active (running) since Thu 2016-06-23 08:32:11 UTC; 6min ago
  Process: 2702 ExecReload=/bin/kill -HUP $MAINPID (code=exited, 
status=0/SUCCESS)
 Main PID: 1643 (sshd)
Tasks: 1
   Memory: 3.8M
  CPU: 108ms
   CGroup: /system.slice/ssh.service
   └─1643 /usr/sbin/sshd -D

Jun 23 08:32:11 xenial-160623-0931 systemd[1]: Started OpenBSD Secure Shell 
server.
Jun 23 08:32:17 xenial-160623-0931 sshd[1747]: Accepted publickey for ubuntu 
from 86.179.225.58 port 46404 ssh2: RSA 
SHA256:HRlolnELGM4aMQXejVDjc0kWktid481/BsLIHtc7Tv0
Jun 23 08:32:17 xenial-160623-0931 sshd[1747]: pam_unix(sshd:session): session 
opened for user ubuntu by (uid=0)
Jun 23 08:37:17 xenial-160623-0931 systemd[1]: Reloading OpenBSD Secure Shell 
server.
Jun 23 08:37:17 xenial-160623-0931 sshd[1643]: Received SIGHUP; restarting.
Jun 23 08:37:17 xenial-160623-0931 systemd[1]: Reloaded OpenBSD Secure Shell 
server.
Jun 23 08:37:17 xenial-160623-0931 sshd[1643]: Server listening on 0.0.0.0 port 
22.
Jun 23 08:37:17 xenial-160623-0931 sshd[1643]: Server listening on :: port 22.
Jun 23 08:37:22 xenial-160623-0931 sshd[3134]: Accepted publickey for ubuntu 
from 86.179.225.58 port 46520 ssh2: RSA 
SHA256:HRlolnELGM4aMQXejVDjc0kWktid481/BsLIHtc7Tv0
Jun 23 08:37:22 xenial-160623-0931 sshd[3134]: pam_unix(sshd:session): session 
opened for user ubuntu by (uid=0)

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to ifupdown in Ubuntu.
https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in ifupdown package in Ubuntu:
  Confirmed

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

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[Touch-packages] [Bug 1584393] Re: systemctl restart networking hangs reloading ssh.service

[Gustavo Lopes]

When networking is hung, stopping ssh.service will also resolve the
hang, but reloading or restating ssh.service will hang as well. There
are no problems restarting or reloading ssh.service in other
circumstances.

-- 
You received this bug notification because you are a member of Ubuntu
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https://bugs.launchpad.net/bugs/1584393

Title:
  systemctl restart networking hangs reloading ssh.service

Status in ifupdown package in Ubuntu:
  New

Bug description:
  Issues "systemctl restart networking" never exits. It hangs during a
  call to "systemctl reload ssh.service":

  ● networking.service - Raise network interfaces
 Loaded: loaded (/lib/systemd/system/networking.service; enabled; vendor 
preset: enabled)
Drop-In: /run/systemd/generator/networking.service.d
 └─50-insserv.conf-$network.conf
 Active: activating (start) since Sat 2016-05-21 21:41:58 UTC; 18s ago
   Docs: man:interfaces(5)
Process: 1288 ExecStop=/sbin/ifdown -a --read-environment (code=exited, 
status=0/SUCCESS)
Process: 1376 ExecStartPre=/bin/sh -c [ "$CONFIGURE_INTERFACES" != "no" ] 
&& [ -n "$(ifquery --read-environment --list --exclude=lo)" ] &
   Main PID: 1383 (ifup)
  Tasks: 7 (limit: 512)
 Memory: 1.8M
CPU: 111ms
 CGroup: /system.slice/networking.service
 ├─1383 /sbin/ifup -a --read-environment
 ├─1479 /sbin/dhclient -1 -v -pf /run/dhclient.enp0s3.pid -lf 
/var/lib/dhcp/dhclient.enp0s3.leases -I -df /var/lib/dhcp/dhclient6
 ├─1480 /bin/sh -c /bin/run-parts --exit-on-error 
/etc/network/if-up.d
 ├─1481 /bin/run-parts --exit-on-error /etc/network/if-up.d
 ├─1504 /bin/sh /etc/network/if-up.d/openssh-server
 ├─1507 /bin/sh /usr/sbin/invoke-rc.d ssh reload
 └─1527 systemctl reload ssh.service

  Then issuing the same command from another terminal causes the first
  to exit successfully (the second also exists successfully).

  On the official vagrant image, I get this problem independently of
  whether the command is issued through and ssh session. I've gotten the
  same behavior on the official xenial AMIs.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ifupdown 0.8.10ubuntu1
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  Date: Sat May 21 21:35:08 2016
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ifupdown
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/ifupdown/+bug/1584393/+subscriptions

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