network manager update causes dbus spam with NameOwnerChanged

Bug #1577132 reported by Michał Sawicz on 2016-05-01
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Canonical System Image
Critical
John McAleely
dbus (Ubuntu)
Undecided
Unassigned
network-manager (Ubuntu)
Undecided
Unassigned

Bug Description

After upgrading network-manager to 1.1.93-0ubuntu1~vivid1, dbus-monitor shows spam with NameOwnerChanged signals - there's no crash files or anything, but the top of top looks like so:

  PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
 2921 phablet 20 0 1164048 277924 7444 S 34,9 28,3 4:18.54 ubuntu-push-cli
  847 message+ 20 0 6412 2444 832 R 32,9 0,2 3:43.92 dbus-daemon
 2255 phablet 20 0 7080 2172 1156 R 22,2 0,2 2:40.95 upstart
 2592 phablet 20 0 33704 4848 4140 R 17,6 0,5 1:52.28 mission-control

dbus-monitor shows hundreds of events like so:

signal time=1462098650.817539 sender=:1.0 -> destination=(null destination) serial=11224 path=/com/ubuntu/Upstart; interface=com.ubuntu.Upstart0_6; member=EventEmitted
   string "dbus"
   array [
      string "SIGNAL=NameOwnerChanged"
      string "BUS=session"
      string "INTERFACE=org.freedesktop.DBus"
      string "OBJPATH=/org/freedesktop/DBus"
      string "SENDER=org.freedesktop.DBus"
      string "ARG0=:1.167"
      string "ARG1="
      string "ARG2=:1.167"
   ]

3s of dbus-monitor:

$ time dbus-monitor > dbus.log
^C
real 0m2.719s

Shows 226 signals - so it's just under 100 signals a second:

$ grep -c NameOwnerChanged dbus.log
226

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: dbus 1.8.12-1ubuntu5
Uname: Linux 3.4.67 armv7l
ApportVersion: 2.17.2-0ubuntu1.3touch1
Architecture: armhf
Date: Sun May 1 12:22:38 2016
InstallationDate: Installed on 2016-04-29 (2 days ago)
InstallationMedia: Ubuntu 15.04 - armhf (20160429-020305)
SourcePackage: dbus
UpgradeStatus: No upgrade log present (probably fresh install)
---
ApportVersion: 2.17.2-0ubuntu1.3touch1
Architecture: armhf
DistroRelease: Ubuntu 15.04
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 # Include files from /etc/network/interfaces.d:
 source-directory /etc/network/interfaces.d
InstallationDate: Installed on 2016-04-29 (2 days ago)
InstallationMedia: Ubuntu 15.04 - armhf (20160429-020305)
IpRoute:
 default via 10.2.0.254 dev wlan0 proto static metric 600
 10.0.0.0/13 via 10.2.0.1 dev wlan0 proto dhcp metric 600
 10.2.0.0/24 dev wlan0 proto kernel scope link src 10.2.0.65 metric 600
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
Package: network-manager 1.1.93-0ubuntu1~vivid1 [origin: LP-PPA-ci-train-ppa-service-stable-phone-overlay]
PackageArchitecture: armhf
PciNetwork:

Tags: third-party-packages vivid
Uname: Linux 3.4.67 armv7l
UnreportableReason: To nie jest oficjalny pakiet Ubuntu. Proszę usunąć wszystkie pakiety pochodzące z innych źródeł niż oficjalne i spróbować ponownie.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dialout dip plugdev sudo tty video
_MarkForUpload: True
modified.conffile..etc.polkit.1.localauthority.50.local.d.org.freedesktop.NetworkManager.pkla: [deleted]
nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'.

Michał Sawicz (saviq) wrote :

apport information

summary: - dbus/upstart spam dbus with NameOwnerChanged
+ network manager update causes dbus spam with NameOwnerChanged
description: updated
tags: added: apport-collected
description: updated

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Changed in canonical-devices-system-image:
status: New → Triaged
importance: Undecided → Critical
assignee: nobody → John McAleely (john.mcaleely)
milestone: none → 11
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