| 2016-06-11 00:16:18 |
Mike Pontillo |
bug |
|
|
added bug |
| 2016-06-11 00:20:51 |
Mike Pontillo |
description |
I noticed on a system that accepts large numbers of SSH connections that after awhile, SSH sessions were taking ~25 seconds to complete.
Looking in /var/log/auth.log, systemd-logind starts failing with the following:
Jun 10 23:55:28 test systemd-logind[105]: Failed to abandon session scope: Transport endpoint is not connected
Jun 10 23:55:28 test sshd[3666]: pam_systemd(sshd:session): Failed to create session: Message recipient disconnected from message bus without replying
I reproduced this in an LXD container by doing something like:
lxc launch ubuntu:x test
lxc exec test -- login -f ubuntu
ssh-import-id <whatever>
Then ran a script as follows (passing in ubuntu@<container-ip>:
while [ 1 ]; do
(time ssh $1 "echo OK > /dev/null") 2>&1 | grep ^real >> log
done
In my case, after 1052 logins, the 1053rd and thereafter were taking 25+ seconds to complete. Here are some snippets from the log file:
$ cat log.confirmed_with_password | grep 0m0 | wc -l
1052
$ cat log.confirmed_with_password | grep 0m25 | wc -l
4
$ tail -5 log.confirmed_with_password
real 0m0.222s
real 0m25.232s
real 0m25.235s
real 0m25.236s
real 0m25.239s
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu5
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 Jun 11 00:09:34 2016
MachineType: Notebook W230SS
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash
SourcePackage: systemd
SystemdDelta:
[EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf
[EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
2 overridden configuration files found.
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W230SS
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd04/15/2014:svnNotebook:pnW230SS:pvrNotApplicable:rvnNotebook:rnW230SS:rvrNotApplicable:cvnNotebook:ct9:cvrN/A:
dmi.product.name: W230SS
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook |
I noticed on a system that accepts large numbers of SSH connections that after awhile, SSH sessions were taking ~25 seconds to complete.
Looking in /var/log/auth.log, systemd-logind starts failing with the following:
Jun 10 23:55:28 test sshd[3666]: pam_unix(sshd:session): session opened for user ubuntu by (uid=0)
Jun 10 23:55:28 test systemd-logind[105]: New session c1052 of user ubuntu.
Jun 10 23:55:28 test systemd-logind[105]: Failed to abandon session scope: Transport endpoint is not connected
Jun 10 23:55:28 test sshd[3666]: pam_systemd(sshd:session): Failed to create session: Message recipient disconnected from message bus without replying
I reproduced this in an LXD container by doing something like:
lxc launch ubuntu:x test
lxc exec test -- login -f ubuntu
ssh-import-id <whatever>
Then ran a script as follows (passing in ubuntu@<container-ip>:
while [ 1 ]; do
(time ssh $1 "echo OK > /dev/null") 2>&1 | grep ^real >> log
done
In my case, after 1052 logins, the 1053rd and thereafter were taking 25+ seconds to complete. Here are some snippets from the log file:
$ cat log.confirmed_with_password | grep 0m0 | wc -l
1052
$ cat log.confirmed_with_password | grep 0m25 | wc -l
4
$ tail -5 log.confirmed_with_password
real 0m0.222s
real 0m25.232s
real 0m25.235s
real 0m25.236s
real 0m25.239s
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu5
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 Jun 11 00:09:34 2016
MachineType: Notebook W230SS
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash
SourcePackage: systemd
SystemdDelta:
[EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf
[EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
2 overridden configuration files found.
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W230SS
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd04/15/2014:svnNotebook:pnW230SS:pvrNotApplicable:rvnNotebook:rnW230SS:rvrNotApplicable:cvnNotebook:ct9:cvrN/A:
dmi.product.name: W230SS
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook |
|
| 2016-06-11 00:21:33 |
Mike Pontillo |
description |
I noticed on a system that accepts large numbers of SSH connections that after awhile, SSH sessions were taking ~25 seconds to complete.
Looking in /var/log/auth.log, systemd-logind starts failing with the following:
Jun 10 23:55:28 test sshd[3666]: pam_unix(sshd:session): session opened for user ubuntu by (uid=0)
Jun 10 23:55:28 test systemd-logind[105]: New session c1052 of user ubuntu.
Jun 10 23:55:28 test systemd-logind[105]: Failed to abandon session scope: Transport endpoint is not connected
Jun 10 23:55:28 test sshd[3666]: pam_systemd(sshd:session): Failed to create session: Message recipient disconnected from message bus without replying
I reproduced this in an LXD container by doing something like:
lxc launch ubuntu:x test
lxc exec test -- login -f ubuntu
ssh-import-id <whatever>
Then ran a script as follows (passing in ubuntu@<container-ip>:
while [ 1 ]; do
(time ssh $1 "echo OK > /dev/null") 2>&1 | grep ^real >> log
done
In my case, after 1052 logins, the 1053rd and thereafter were taking 25+ seconds to complete. Here are some snippets from the log file:
$ cat log.confirmed_with_password | grep 0m0 | wc -l
1052
$ cat log.confirmed_with_password | grep 0m25 | wc -l
4
$ tail -5 log.confirmed_with_password
real 0m0.222s
real 0m25.232s
real 0m25.235s
real 0m25.236s
real 0m25.239s
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu5
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 Jun 11 00:09:34 2016
MachineType: Notebook W230SS
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash
SourcePackage: systemd
SystemdDelta:
[EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf
[EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
2 overridden configuration files found.
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W230SS
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd04/15/2014:svnNotebook:pnW230SS:pvrNotApplicable:rvnNotebook:rnW230SS:rvrNotApplicable:cvnNotebook:ct9:cvrN/A:
dmi.product.name: W230SS
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook |
I noticed on a system that accepts large numbers of SSH connections that after awhile, SSH sessions were taking ~25 seconds to complete.
Looking in /var/log/auth.log, systemd-logind starts failing with the following:
Jun 10 23:55:28 test sshd[3666]: pam_unix(sshd:session): session opened for user ubuntu by (uid=0)
Jun 10 23:55:28 test systemd-logind[105]: New session c1052 of user ubuntu.
Jun 10 23:55:28 test systemd-logind[105]: Failed to abandon session scope: Transport endpoint is not connected
Jun 10 23:55:28 test sshd[3666]: pam_systemd(sshd:session): Failed to create session: Message recipient disconnected from message bus without replying
I reproduced this in an LXD container by doing something like:
lxc launch ubuntu:x test
lxc exec test -- login -f ubuntu
ssh-import-id <whatever>
Then ran a script as follows (passing in ubuntu@<container-ip>:
while [ 1 ]; do
(time ssh $1 "echo OK > /dev/null") 2>&1 | grep ^real >> log
done
In my case, after 1052 logins, the 1053rd and thereafter were taking 25+ seconds to complete. Here are some snippets from the log file:
$ cat log | grep 0m0 | wc -l
1052
$ cat log | grep 0m25 | wc -l
4
$ tail -5 log
real 0m0.222s
real 0m25.232s
real 0m25.235s
real 0m25.236s
real 0m25.239s
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu5
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 Jun 11 00:09:34 2016
MachineType: Notebook W230SS
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash
SourcePackage: systemd
SystemdDelta:
[EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf
[EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
2 overridden configuration files found.
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W230SS
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd04/15/2014:svnNotebook:pnW230SS:pvrNotApplicable:rvnNotebook:rnW230SS:rvrNotApplicable:cvnNotebook:ct9:cvrN/A:
dmi.product.name: W230SS
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook |
|
| 2016-06-11 00:21:57 |
Mike Pontillo |
description |
I noticed on a system that accepts large numbers of SSH connections that after awhile, SSH sessions were taking ~25 seconds to complete.
Looking in /var/log/auth.log, systemd-logind starts failing with the following:
Jun 10 23:55:28 test sshd[3666]: pam_unix(sshd:session): session opened for user ubuntu by (uid=0)
Jun 10 23:55:28 test systemd-logind[105]: New session c1052 of user ubuntu.
Jun 10 23:55:28 test systemd-logind[105]: Failed to abandon session scope: Transport endpoint is not connected
Jun 10 23:55:28 test sshd[3666]: pam_systemd(sshd:session): Failed to create session: Message recipient disconnected from message bus without replying
I reproduced this in an LXD container by doing something like:
lxc launch ubuntu:x test
lxc exec test -- login -f ubuntu
ssh-import-id <whatever>
Then ran a script as follows (passing in ubuntu@<container-ip>:
while [ 1 ]; do
(time ssh $1 "echo OK > /dev/null") 2>&1 | grep ^real >> log
done
In my case, after 1052 logins, the 1053rd and thereafter were taking 25+ seconds to complete. Here are some snippets from the log file:
$ cat log | grep 0m0 | wc -l
1052
$ cat log | grep 0m25 | wc -l
4
$ tail -5 log
real 0m0.222s
real 0m25.232s
real 0m25.235s
real 0m25.236s
real 0m25.239s
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu5
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 Jun 11 00:09:34 2016
MachineType: Notebook W230SS
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash
SourcePackage: systemd
SystemdDelta:
[EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf
[EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
2 overridden configuration files found.
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W230SS
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd04/15/2014:svnNotebook:pnW230SS:pvrNotApplicable:rvnNotebook:rnW230SS:rvrNotApplicable:cvnNotebook:ct9:cvrN/A:
dmi.product.name: W230SS
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook |
I noticed on a system that accepts large numbers of SSH connections that after awhile, SSH sessions were taking ~25 seconds to complete.
Looking in /var/log/auth.log, systemd-logind starts failing with the following:
Jun 10 23:55:28 test sshd[3666]: pam_unix(sshd:session): session opened for user ubuntu by (uid=0)
Jun 10 23:55:28 test systemd-logind[105]: New session c1052 of user ubuntu.
Jun 10 23:55:28 test systemd-logind[105]: Failed to abandon session scope: Transport endpoint is not connected
Jun 10 23:55:28 test sshd[3666]: pam_systemd(sshd:session): Failed to create session: Message recipient disconnected from message bus without replying
I reproduced this in an LXD container by doing something like:
lxc launch ubuntu:x test
lxc exec test -- login -f ubuntu
ssh-import-id <whatever>
Then ran a script as follows (passing in ubuntu@<container-ip>):
while [ 1 ]; do
(time ssh $1 "echo OK > /dev/null") 2>&1 | grep ^real >> log
done
In my case, after 1052 logins, the 1053rd and thereafter were taking 25+ seconds to complete. Here are some snippets from the log file:
$ cat log | grep 0m0 | wc -l
1052
$ cat log | grep 0m25 | wc -l
4
$ tail -5 log
real 0m0.222s
real 0m25.232s
real 0m25.235s
real 0m25.236s
real 0m25.239s
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu5
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 Jun 11 00:09:34 2016
MachineType: Notebook W230SS
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash
SourcePackage: systemd
SystemdDelta:
[EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf
[EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
2 overridden configuration files found.
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W230SS
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd04/15/2014:svnNotebook:pnW230SS:pvrNotApplicable:rvnNotebook:rnW230SS:rvrNotApplicable:cvnNotebook:ct9:cvrN/A:
dmi.product.name: W230SS
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook |
|
| 2016-06-13 16:49:04 |
Launchpad Janitor |
systemd (Ubuntu): status |
New |
Confirmed |
|
| 2016-06-15 13:24:19 |
Christian Reis |
tags |
amd64 apport-bug uec-images xenial |
amd64 apport-bug cdo-qa-blocker uec-images xenial |
|
| 2016-06-28 08:23:16 |
Mario |
bug |
|
|
added subscriber Mario |
| 2016-07-01 23:08:23 |
Alberto Salvia Novella |
systemd (Ubuntu): importance |
Undecided |
Medium |
|
| 2016-07-22 19:47:20 |
Alexander Groß |
bug |
|
|
added subscriber Alexander Groß |
| 2016-08-03 09:04:59 |
Stan Hu |
bug watch added |
|
https://bugs.freedesktop.org/show_bug.cgi?id=95264 |
|
| 2016-08-04 11:11:25 |
Stan Hu |
bug watch added |
|
https://github.com/systemd/systemd/issues/1961 |
|
| 2016-08-07 14:58:55 |
Kevin Brubeck Unhammer |
bug |
|
|
added subscriber Kevin Brubeck Unhammer |
| 2016-08-12 14:15:04 |
Łukasz Zemczak |
systemd (Ubuntu): assignee |
|
Łukasz Zemczak (sil2100) |
|
| 2016-08-12 16:23:19 |
Łukasz Zemczak |
nominated for series |
|
Ubuntu Xenial |
|
| 2016-08-12 16:23:19 |
Łukasz Zemczak |
bug task added |
|
systemd (Ubuntu Xenial) |
|
| 2016-08-12 16:23:28 |
Łukasz Zemczak |
systemd (Ubuntu Xenial): status |
New |
Confirmed |
|
| 2016-08-12 16:23:31 |
Łukasz Zemczak |
systemd (Ubuntu Xenial): importance |
Undecided |
Medium |
|
| 2016-08-12 17:14:53 |
Łukasz Zemczak |
systemd (Ubuntu): assignee |
Łukasz Zemczak (sil2100) |
|
|
| 2016-08-12 17:15:10 |
Łukasz Zemczak |
systemd (Ubuntu): status |
Confirmed |
Fix Released |
|
| 2016-08-12 17:43:11 |
Łukasz Zemczak |
bug task added |
|
dbus (Ubuntu) |
|
| 2016-08-12 17:52:05 |
Łukasz Zemczak |
attachment added |
|
Debdiff of the back-ported systemd patch https://bugs.launchpad.net/ubuntu/+source/dbus/+bug/1591411/+attachment/4719736/+files/systemd_229-4ubuntu8.debdiff |
|
| 2016-08-12 20:34:08 |
Ubuntu Foundations Team Bug Bot |
tags |
amd64 apport-bug cdo-qa-blocker uec-images xenial |
amd64 apport-bug cdo-qa-blocker patch uec-images xenial |
|
| 2016-08-12 21:25:44 |
Stan Hu |
bug |
|
|
added subscriber Stan Hu |
| 2016-08-12 21:38:57 |
Pablo Carranza |
bug |
|
|
added subscriber Pablo Carranza |
| 2016-08-12 23:59:13 |
Stan Hu |
bug watch added |
|
https://bugs.freedesktop.org/show_bug.cgi?id=95263 |
|
| 2016-08-13 06:58:05 |
Martin Pitt |
bug task added |
|
dbus |
|
| 2016-08-16 11:18:56 |
Łukasz Zemczak |
tags |
amd64 apport-bug cdo-qa-blocker patch uec-images xenial |
amd64 apport-bug cdo-qa-blocker uec-images xenial |
|
| 2016-08-16 11:19:08 |
Łukasz Zemczak |
systemd (Ubuntu Xenial): status |
Confirmed |
Invalid |
|
| 2016-08-16 11:19:20 |
Łukasz Zemczak |
dbus (Ubuntu): status |
New |
Confirmed |
|
| 2016-08-16 11:19:24 |
Łukasz Zemczak |
dbus (Ubuntu Xenial): status |
New |
Confirmed |
|
| 2016-08-16 12:45:33 |
Ubuntu Foundations Team Bug Bot |
tags |
amd64 apport-bug cdo-qa-blocker uec-images xenial |
amd64 apport-bug cdo-qa-blocker patch uec-images xenial |
|
| 2016-08-16 17:59:55 |
Simon McVittie |
cve linked |
|
2014-3637 |
|
| 2016-08-16 22:32:01 |
Alberto Salvia Novella |
dbus (Ubuntu Xenial): importance |
Undecided |
Medium |
|
| 2016-08-16 22:32:04 |
Alberto Salvia Novella |
dbus (Ubuntu): importance |
Undecided |
Medium |
|
| 2016-08-17 19:44:05 |
Andrey Zaretskiy |
bug |
|
|
added subscriber Andrey Zaretskiy |
| 2016-08-22 03:59:58 |
R.B. Boyer |
bug |
|
|
added subscriber R.B. Boyer |
| 2016-08-22 06:24:21 |
Gen Ik |
bug |
|
|
added subscriber Gen Ik |
| 2016-08-22 10:45:19 |
Shih-Yuan Lee |
bug |
|
|
added subscriber Shih-Yuan Lee |
| 2016-08-22 11:42:33 |
Laurent Bigonville |
bug task added |
|
systemd |
|
| 2016-08-22 12:03:23 |
Laurent Bigonville |
bug watch added |
|
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=751636 |
|
| 2016-08-22 13:27:17 |
Alessandro Polverini |
bug |
|
|
added subscriber Alessandro Polverini |
| 2016-08-22 15:43:43 |
Andrew |
bug |
|
|
added subscriber Andrew |
| 2016-08-22 15:46:34 |
A. Karl Kornel |
bug |
|
|
added subscriber A. Karl Kornel |
| 2016-08-22 17:01:32 |
Dr. Jens Harbott |
bug |
|
|
added subscriber Dr. Jens Rosenboom |
| 2016-08-27 23:26:12 |
Ivan Kozik |
bug |
|
|
added subscriber Ivan Kozik |
| 2016-08-31 11:26:05 |
Richard Mortimer |
bug |
|
|
added subscriber Richard Mortimer |
| 2016-08-31 18:02:53 |
Sebastian Nohn |
bug |
|
|
added subscriber Sebastian Nohn |
| 2016-09-08 22:35:08 |
Ken Baker |
bug |
|
|
added subscriber Ken Baker |
| 2016-09-11 17:42:45 |
Marc Meadows |
bug |
|
|
added subscriber Marc Meadows |
| 2016-09-12 12:52:25 |
Nicola Volpini |
bug |
|
|
added subscriber Nicola Volpini |
| 2016-09-21 13:59:40 |
Luis Gallo |
bug |
|
|
added subscriber Luis Gallo |
| 2016-09-28 04:12:44 |
Bunk |
bug |
|
|
added subscriber Bunk |
| 2016-10-05 15:53:45 |
Benjamin Paccaud |
bug |
|
|
added subscriber Benjamin Paccaud |
| 2016-10-07 11:55:20 |
Bert Driehuis |
bug |
|
|
added subscriber Bert Driehuis |
| 2016-10-07 11:59:16 |
autostatic |
bug |
|
|
added subscriber autostatic |
| 2016-10-07 12:14:34 |
Bas |
bug |
|
|
added subscriber Bas |
| 2016-10-12 22:00:15 |
Eric Freeyoung |
bug |
|
|
added subscriber Eric Freeyoung |
| 2016-10-13 08:57:15 |
Finn Herpich |
bug |
|
|
added subscriber Finn Herpich |
| 2016-10-13 10:51:47 |
Łukasz Zemczak |
dbus (Ubuntu Xenial): assignee |
|
Łukasz Zemczak (sil2100) |
|
| 2016-10-13 10:51:50 |
Łukasz Zemczak |
dbus (Ubuntu): assignee |
|
Łukasz Zemczak (sil2100) |
|
| 2016-10-14 12:36:45 |
Tilman Blumenbach |
bug |
|
|
added subscriber Tilman Blumenbach |
| 2016-10-21 07:42:51 |
Łukasz Zemczak |
nominated for series |
|
Ubuntu Yakkety |
|
| 2016-10-21 07:42:51 |
Łukasz Zemczak |
bug task added |
|
dbus (Ubuntu Yakkety) |
|
| 2016-10-21 07:42:51 |
Łukasz Zemczak |
bug task added |
|
systemd (Ubuntu Yakkety) |
|
| 2016-10-21 07:43:05 |
Łukasz Zemczak |
dbus (Ubuntu Yakkety): status |
New |
Confirmed |
|
| 2016-10-21 07:43:08 |
Łukasz Zemczak |
systemd (Ubuntu Yakkety): status |
New |
Invalid |
|
| 2016-10-24 10:15:19 |
madeddie |
bug |
|
|
added subscriber madeddie |
| 2016-10-25 14:28:40 |
Louis Bouchard |
bug |
|
|
added subscriber Louis Bouchard |
| 2016-10-26 08:37:37 |
Kai-Heng Feng |
bug |
|
|
added subscriber Kai-Heng Feng |
| 2016-11-03 15:58:59 |
Jan Hübner |
bug |
|
|
added subscriber Jan Hübner |
| 2016-11-04 13:18:13 |
Launchpad Janitor |
dbus (Ubuntu): status |
Confirmed |
Fix Released |
|
| 2016-11-07 16:10:31 |
Łukasz Zemczak |
dbus (Ubuntu Yakkety): assignee |
|
Łukasz Zemczak (sil2100) |
|
| 2016-11-07 16:10:36 |
Łukasz Zemczak |
dbus (Ubuntu Yakkety): importance |
Undecided |
Medium |
|
| 2016-11-15 12:34:12 |
Łukasz Zemczak |
description |
I noticed on a system that accepts large numbers of SSH connections that after awhile, SSH sessions were taking ~25 seconds to complete.
Looking in /var/log/auth.log, systemd-logind starts failing with the following:
Jun 10 23:55:28 test sshd[3666]: pam_unix(sshd:session): session opened for user ubuntu by (uid=0)
Jun 10 23:55:28 test systemd-logind[105]: New session c1052 of user ubuntu.
Jun 10 23:55:28 test systemd-logind[105]: Failed to abandon session scope: Transport endpoint is not connected
Jun 10 23:55:28 test sshd[3666]: pam_systemd(sshd:session): Failed to create session: Message recipient disconnected from message bus without replying
I reproduced this in an LXD container by doing something like:
lxc launch ubuntu:x test
lxc exec test -- login -f ubuntu
ssh-import-id <whatever>
Then ran a script as follows (passing in ubuntu@<container-ip>):
while [ 1 ]; do
(time ssh $1 "echo OK > /dev/null") 2>&1 | grep ^real >> log
done
In my case, after 1052 logins, the 1053rd and thereafter were taking 25+ seconds to complete. Here are some snippets from the log file:
$ cat log | grep 0m0 | wc -l
1052
$ cat log | grep 0m25 | wc -l
4
$ tail -5 log
real 0m0.222s
real 0m25.232s
real 0m25.235s
real 0m25.236s
real 0m25.239s
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu5
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 Jun 11 00:09:34 2016
MachineType: Notebook W230SS
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash
SourcePackage: systemd
SystemdDelta:
[EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf
[EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
2 overridden configuration files found.
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W230SS
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd04/15/2014:svnNotebook:pnW230SS:pvrNotApplicable:rvnNotebook:rnW230SS:rvrNotApplicable:cvnNotebook:ct9:cvrN/A:
dmi.product.name: W230SS
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook |
[Impact]
The bug affects multiple users and introduces an user visible delay (~25 seconds) on SSH connections after a large number of sessions have been processed. This has a serious impact on big systems and servers running our software.
The currently proposed fix is actually a safe workaround for the bug as proposed by the dbus upstream. The workaround makes uid 0 immune to the pending_fd_timeout limit that kicks in and causes the original issue.
[Test Case]
.
[Regression Potential]
The fix has a rather low regression potential as the workaround is a very small change only affecting one particular case - handling of uid 0. The fix has been tested by multiple users and has been around in zesty for a while, with multiple people involved in reviewing the change. It's also a change that has been proposed by upstream.
[Original Description]
I noticed on a system that accepts large numbers of SSH connections that after awhile, SSH sessions were taking ~25 seconds to complete.
Looking in /var/log/auth.log, systemd-logind starts failing with the following:
Jun 10 23:55:28 test sshd[3666]: pam_unix(sshd:session): session opened for user ubuntu by (uid=0)
Jun 10 23:55:28 test systemd-logind[105]: New session c1052 of user ubuntu.
Jun 10 23:55:28 test systemd-logind[105]: Failed to abandon session scope: Transport endpoint is not connected
Jun 10 23:55:28 test sshd[3666]: pam_systemd(sshd:session): Failed to create session: Message recipient disconnected from message bus without replying
I reproduced this in an LXD container by doing something like:
lxc launch ubuntu:x test
lxc exec test -- login -f ubuntu
ssh-import-id <whatever>
Then ran a script as follows (passing in ubuntu@<container-ip>):
while [ 1 ]; do
(time ssh $1 "echo OK > /dev/null") 2>&1 | grep ^real >> log
done
In my case, after 1052 logins, the 1053rd and thereafter were taking 25+ seconds to complete. Here are some snippets from the log file:
$ cat log | grep 0m0 | wc -l
1052
$ cat log | grep 0m25 | wc -l
4
$ tail -5 log
real 0m0.222s
real 0m25.232s
real 0m25.235s
real 0m25.236s
real 0m25.239s
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu5
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 Jun 11 00:09:34 2016
MachineType: Notebook W230SS
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash
SourcePackage: systemd
SystemdDelta:
[EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf
[EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
2 overridden configuration files found.
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W230SS
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd04/15/2014:svnNotebook:pnW230SS:pvrNotApplicable:rvnNotebook:rnW230SS:rvrNotApplicable:cvnNotebook:ct9:cvrN/A:
dmi.product.name: W230SS
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook |
|
| 2016-11-16 11:02:03 |
Łukasz Zemczak |
description |
[Impact]
The bug affects multiple users and introduces an user visible delay (~25 seconds) on SSH connections after a large number of sessions have been processed. This has a serious impact on big systems and servers running our software.
The currently proposed fix is actually a safe workaround for the bug as proposed by the dbus upstream. The workaround makes uid 0 immune to the pending_fd_timeout limit that kicks in and causes the original issue.
[Test Case]
.
[Regression Potential]
The fix has a rather low regression potential as the workaround is a very small change only affecting one particular case - handling of uid 0. The fix has been tested by multiple users and has been around in zesty for a while, with multiple people involved in reviewing the change. It's also a change that has been proposed by upstream.
[Original Description]
I noticed on a system that accepts large numbers of SSH connections that after awhile, SSH sessions were taking ~25 seconds to complete.
Looking in /var/log/auth.log, systemd-logind starts failing with the following:
Jun 10 23:55:28 test sshd[3666]: pam_unix(sshd:session): session opened for user ubuntu by (uid=0)
Jun 10 23:55:28 test systemd-logind[105]: New session c1052 of user ubuntu.
Jun 10 23:55:28 test systemd-logind[105]: Failed to abandon session scope: Transport endpoint is not connected
Jun 10 23:55:28 test sshd[3666]: pam_systemd(sshd:session): Failed to create session: Message recipient disconnected from message bus without replying
I reproduced this in an LXD container by doing something like:
lxc launch ubuntu:x test
lxc exec test -- login -f ubuntu
ssh-import-id <whatever>
Then ran a script as follows (passing in ubuntu@<container-ip>):
while [ 1 ]; do
(time ssh $1 "echo OK > /dev/null") 2>&1 | grep ^real >> log
done
In my case, after 1052 logins, the 1053rd and thereafter were taking 25+ seconds to complete. Here are some snippets from the log file:
$ cat log | grep 0m0 | wc -l
1052
$ cat log | grep 0m25 | wc -l
4
$ tail -5 log
real 0m0.222s
real 0m25.232s
real 0m25.235s
real 0m25.236s
real 0m25.239s
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu5
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 Jun 11 00:09:34 2016
MachineType: Notebook W230SS
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash
SourcePackage: systemd
SystemdDelta:
[EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf
[EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
2 overridden configuration files found.
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W230SS
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd04/15/2014:svnNotebook:pnW230SS:pvrNotApplicable:rvnNotebook:rnW230SS:rvrNotApplicable:cvnNotebook:ct9:cvrN/A:
dmi.product.name: W230SS
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook |
[Impact]
The bug affects multiple users and introduces an user visible delay (~25 seconds) on SSH connections after a large number of sessions have been processed. This has a serious impact on big systems and servers running our software.
The currently proposed fix is actually a safe workaround for the bug as proposed by the dbus upstream. The workaround makes uid 0 immune to the pending_fd_timeout limit that kicks in and causes the original issue.
[Test Case]
lxc launch ubuntu:x test
lxc exec test -- login -f ubuntu
ssh-import-id <whatever>
Then ran a script as follows (passing in ubuntu@<container-ip>):
while [ 1 ]; do
(time ssh $1 "echo OK > /dev/null") 2>&1 | grep ^real >> log
done
Then checking the log file if there are any ssh sessions that are taking 25+ seconds to complete.
Multiple instances of the same script can be used at the same time.
[Regression Potential]
The fix has a rather low regression potential as the workaround is a very small change only affecting one particular case - handling of uid 0. The fix has been tested by multiple users and has been around in zesty for a while, with multiple people involved in reviewing the change. It's also a change that has been proposed by upstream.
[Original Description]
I noticed on a system that accepts large numbers of SSH connections that after awhile, SSH sessions were taking ~25 seconds to complete.
Looking in /var/log/auth.log, systemd-logind starts failing with the following:
Jun 10 23:55:28 test sshd[3666]: pam_unix(sshd:session): session opened for user ubuntu by (uid=0)
Jun 10 23:55:28 test systemd-logind[105]: New session c1052 of user ubuntu.
Jun 10 23:55:28 test systemd-logind[105]: Failed to abandon session scope: Transport endpoint is not connected
Jun 10 23:55:28 test sshd[3666]: pam_systemd(sshd:session): Failed to create session: Message recipient disconnected from message bus without replying
I reproduced this in an LXD container by doing something like:
lxc launch ubuntu:x test
lxc exec test -- login -f ubuntu
ssh-import-id <whatever>
Then ran a script as follows (passing in ubuntu@<container-ip>):
while [ 1 ]; do
(time ssh $1 "echo OK > /dev/null") 2>&1 | grep ^real >> log
done
In my case, after 1052 logins, the 1053rd and thereafter were taking 25+ seconds to complete. Here are some snippets from the log file:
$ cat log | grep 0m0 | wc -l
1052
$ cat log | grep 0m25 | wc -l
4
$ tail -5 log
real 0m0.222s
real 0m25.232s
real 0m25.235s
real 0m25.236s
real 0m25.239s
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu5
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 Jun 11 00:09:34 2016
MachineType: Notebook W230SS
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash
SourcePackage: systemd
SystemdDelta:
[EXTENDED] /lib/systemd/system/rc-local.service → /lib/systemd/system/rc-local.service.d/debian.conf
[EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
2 overridden configuration files found.
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/15/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: W230SS
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd04/15/2014:svnNotebook:pnW230SS:pvrNotApplicable:rvnNotebook:rnW230SS:rvrNotApplicable:cvnNotebook:ct9:cvrN/A:
dmi.product.name: W230SS
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook |
|
| 2016-11-25 17:51:21 |
Łukasz Zemczak |
dbus (Ubuntu Xenial): status |
Confirmed |
In Progress |
|
| 2016-11-25 17:51:24 |
Łukasz Zemczak |
dbus (Ubuntu Yakkety): status |
Confirmed |
In Progress |
|
| 2016-11-28 10:18:09 |
CorbetRobin |
bug |
|
|
added subscriber CorbetRobin |
| 2016-11-28 12:57:03 |
Morten Gade Sørensen |
bug |
|
|
added subscriber Morten Gade Sørensen |
| 2016-11-30 00:15:34 |
Ash Tyndall |
bug |
|
|
added subscriber Ash Tyndall |
| 2016-11-30 03:36:01 |
Richard Mansfield |
bug |
|
|
added subscriber Richard Mansfield |
| 2016-11-30 10:59:56 |
Thomas Johnson |
bug |
|
|
added subscriber Thomas Johnson |
| 2016-12-02 16:13:11 |
Chris Siebenmann |
bug |
|
|
added subscriber Chris Siebenmann |
| 2016-12-05 08:47:41 |
Ronan Lanore |
bug |
|
|
added subscriber Ronan Lanore |
| 2016-12-16 11:03:42 |
Timo Aaltonen |
dbus (Ubuntu Xenial): status |
In Progress |
Fix Committed |
|
| 2016-12-16 11:03:46 |
Timo Aaltonen |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2016-12-16 11:03:51 |
Timo Aaltonen |
bug |
|
|
added subscriber SRU Verification |
| 2016-12-16 11:04:10 |
Timo Aaltonen |
tags |
amd64 apport-bug cdo-qa-blocker patch uec-images xenial |
amd64 apport-bug cdo-qa-blocker patch uec-images verification-needed xenial |
|
| 2016-12-16 11:14:22 |
Timo Aaltonen |
dbus (Ubuntu Yakkety): status |
In Progress |
Fix Committed |
|
| 2016-12-16 19:28:06 |
paz |
bug |
|
|
added subscriber paz |
| 2016-12-22 22:14:06 |
Dave Chiluk |
tags |
amd64 apport-bug cdo-qa-blocker patch uec-images verification-needed xenial |
amd64 apport-bug cdo-qa-blocker patch uec-images verification-done xenial |
|
| 2016-12-22 22:14:30 |
Dave Chiluk |
tags |
amd64 apport-bug cdo-qa-blocker patch uec-images verification-done xenial |
amd64 apport-bug cdo-qa-blocker patch uec-images verification-done-xenial xenial |
|
| 2016-12-23 20:29:45 |
Dave Chiluk |
bug |
|
|
added subscriber Dave Chiluk |
| 2017-01-05 12:35:15 |
madeddie |
removed subscriber madeddie |
|
|
|
| 2017-01-17 16:07:06 |
Launchpad Janitor |
dbus (Ubuntu Xenial): status |
Fix Committed |
Fix Released |
|
| 2017-04-06 13:19:24 |
Bug Watch Updater |
dbus: status |
Unknown |
Fix Released |
|
| 2017-04-06 13:19:24 |
Bug Watch Updater |
dbus: importance |
Unknown |
Medium |
|
| 2017-05-04 02:53:51 |
Bunk |
removed subscriber Bunk |
|
|
|
| 2017-07-10 09:36:04 |
Łukasz Zemczak |
dbus (Ubuntu Yakkety): status |
Fix Committed |
Won't Fix |
|
| 2017-09-18 16:42:48 |
Drew Freiberger |
tags |
amd64 apport-bug cdo-qa-blocker patch uec-images verification-done-xenial xenial |
amd64 apport-bug canonical-bootstack canonical-is cdo-qa-blocker patch uec-images verification-done-xenial xenial |
|
| 2018-02-27 11:40:29 |
Dennis Haecker |
bug |
|
|
added subscriber Dennis Haecker |
| 2019-05-17 05:13:33 |
Bug Watch Updater |
systemd: status |
Unknown |
Fix Released |
|
| 2019-07-17 18:46:39 |
Nick Adams |
bug |
|
|
added subscriber Nick Adams |
| 2019-08-21 22:46:18 |
Ioanna Alifieraki |
bug |
|
|
added subscriber Ioanna Alifieraki |
| 2021-03-10 10:58:46 |
djmaze |
bug |
|
|
added subscriber djmaze |
