kded4 memory use grows with every accepted ssh connection. Memory leak?

[David H]

The kded4 RSS grows seemingly without bound with every ssh login.

djh900@dh:~$ pkill kded4
djh900@dh:~$ nohup kded4
nohup: ignoring input and appending output to `nohup.out'
djh900@dh:~$ pgrep kded4
11430
djh900@dh:~$ ps vp 11430
  PID TTY STAT TIME MAJFL TRS DRS RSS %MEM COMMAND
11430 pts/0 Sl 0:00 0 2 857053 64476 1.6 kded4
djh900@dh:~$ for i in 0 1 2 3 4 5 6 7 8 9; do ssh localhost true; done
djh900@dh:~$ ps vp 11430
  PID TTY STAT TIME MAJFL TRS DRS RSS %MEM COMMAND
11430 pts/0 Sl 0:01 0 2 857213 87108 2.2 kded4
djh900@dh:~$ for i in 0 1 2 3 4 5 6 7 8 9; do ssh localhost true; done
djh900@dh:~$ ps vp 11430
  PID TTY STAT TIME MAJFL TRS DRS RSS %MEM COMMAND
11430 pts/0 Sl 0:01 0 2 857373 109656 2.7 kded4
djh900@dh:~$ for i in 0 1 2 3 4 5 6 7 8 9; do ssh localhost true; done
djh900@dh:~$ ps vp 11430
  PID TTY STAT TIME MAJFL TRS DRS RSS %MEM COMMAND
11430 pts/0 Sl 0:02 0 2 923101 131948 3.3 kded4
djh900@dh:~$ for i in 0 1 2 3 4 5 6 7 8 9; do ssh localhost true; done
djh900@dh:~$ ps vp 11430
  PID TTY STAT TIME MAJFL TRS DRS RSS %MEM COMMAND
11430 pts/0 Sl 0:03 0 2 923261 154500 3.9 kded4
djh900@dh:~$ for i in 0 1 2 3 4 5 6 7 8 9; do ssh localhost true; done
djh900@dh:~$ ps vp 11430
  PID TTY STAT TIME MAJFL TRS DRS RSS %MEM COMMAND
11430 pts/0 Sl 0:03 0 2 923453 176792 4.5 kded4
djh900@dh:~$ for i in 0 1 2 3 4 5 6 7 8 9; do ssh localhost true; done
djh900@dh:~$ ps vp 11430
  PID TTY STAT TIME MAJFL TRS DRS RSS %MEM COMMAND
11430 pts/0 Sl 0:04 0 2 989149 199084 5.0 kded4
djh900@dh:~$

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: kdelibs-bin 4:4.8.5-0ubuntu0.1
ProcVersionSignature: Ubuntu 3.2.0-32.51-generic 3.2.30
Uname: Linux 3.2.0-32-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu15.1
Architecture: amd64
Date: Thu Dec 20 13:38:30 2012
ExecutablePath: /usr/bin/kded4
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120423)
MarkForUpload: True
ProcEnviron:
 SHELL=/bin/bash
 TERM=xterm
 PATH=(custom, user)
 LANG=en_AU.UTF-8
 LANGUAGE=en_AU:en
SourcePackage: kde4libs
UpgradeStatus: No upgrade log present (probably fresh install)

[Harald Sitter (apachelogger)]

We'll need some more infromation.
Please go to: systemsettings -> start and shutdown -> service manager -> stop one startup service at a time and see whether kded still leaks.

Please also post the output of
ls -lah /usr/share/kde4/services/kded

Finally a note that to produce useful output logs you'd first need to run kdebugdialog and turn on debugging for all KDE software, otherwise stdout does not contain anything useful.

[David H (david-houlder)]

OK, I stopped all services in the service manager. Right now, each service has its "stop" button greyed out with only the "Start" button active.

djh900@dh:~$
djh900@dh:~$ pgrep kded4
23291
djh900@dh:~$ ps vp 23291
  PID TTY STAT TIME MAJFL TRS DRS RSS %MEM COMMAND
23291 pts/3 Sl 0:00 12 2 857345 64736 1.6 kded4
djh900@dh:~$ for ((i=0; i< 100; i++)); do ssh localhost true; done
djh900@dh:~$ ps vp 23291
  PID TTY STAT TIME MAJFL TRS DRS RSS %MEM COMMAND
23291 pts/3 Sl 0:06 12 2 1055617 280744 7.1 kded4
djh900@dh:~$ for ((i=0; i< 100; i++)); do ssh localhost true; done
djh900@dh:~$ ps vp 23291
  PID TTY STAT TIME MAJFL TRS DRS RSS %MEM COMMAND
23291 pts/3 Sl 0:12 12 2 1253921 498504 12.7 kded4
djh900@dh:~$

djh900@dh:~$
djh900@dh:~$ ls -lah /usr/share/kde4/services/kded
total 328K
drwxr-xr-x 2 root root 4.0K Nov 26 09:59 .
drwxr-xr-x 16 root root 56K Nov 26 10:00 ..
-rw-r--r-- 1 root root 29 Oct 14 2011 activitymanager.desktop
-rw-r--r-- 1 root root 2.8K Oct 9 2011 bluedevil.desktop
-rw-r--r-- 1 root root 6.6K Jan 11 2012 desktopnotifier.desktop
-rw-r--r-- 1 root root 8.7K Mar 30 2012 device_automounter.desktop
-rw-r--r-- 1 root root 4.9K Mar 2 2012 dnssdwatcher.desktop
-rw-r--r-- 1 root root 5.6K Jul 31 01:08 favicons.desktop
-rw-r--r-- 1 root root 8.1K Jul 31 01:12 freespacenotifier.desktop
-rw-r--r-- 1 root root 4.8K Jun 7 2012 kcookiejar.desktop
-rw-r--r-- 1 root root 5.7K Jul 31 01:12 kephal.desktop
-rw-r--r-- 1 root root 2.4K Jul 31 01:12 keyboard.desktop
-rw-r--r-- 1 root root 9.3K Jul 31 01:12 khotkeys.desktop
-rw-r--r-- 1 root root 3.2K Aug 1 02:25 kmixd.desktop
-rw-r--r-- 1 root root 6.3K Jan 11 2012 kpasswdserver.desktop
-rw-r--r-- 1 root root 7.3K Jun 7 2012 kssld.desktop
-rw-r--r-- 1 root root 6.8K Mar 1 2012 ktimezoned.desktop
-rw-r--r-- 1 root root 13K Jul 31 01:12 kwrited.desktop
-rw-r--r-- 1 root root 1.4K Apr 2 2012 muon-notifier.desktop
-rw-r--r-- 1 root root 11K Jan 19 2012 nepomuksearchmodule.desktop
-rw-r--r-- 1 root root 3.5K Apr 8 2012 networkmanagement.desktop
-rw-r--r-- 1 root root 13K Apr 30 2012 networkstatus.desktop
-rw-r--r-- 1 root root 9.8K Jan 19 2012 networkwatcher.desktop
-rw-r--r-- 1 root root 289 Sep 23 2011 notificationhelper.desktop
-rw-r--r-- 1 root root 2.5K Oct 9 2011 obexftpdaemon.desktop
-rw-r--r-- 1 root root 7.0K Jan 19 2012 phononserver.desktop
-rw-r--r-- 1 root root 8.2K Jul 31 01:12 powerdevil.desktop
-rw-r--r-- 1 root root 8.8K Jun 7 2012 proxyscout.desktop
-rw-r--r-- 1 root root 3.5K Jul 31 01:12 randrmonitor.desktop
-rw-r--r-- 1 root root 9.2K Jul 31 01:06 remotedirnotify.desktop
-rw-r--r-- 1 root root 8.8K Jan 19 2012 solidautoeject.desktop
-rw-r--r-- 1 root root 7.5K Jan 19 2012 soliduiserver.desktop
-rw-r--r-- 1 root root 8.6K Jul 31 01:12 statusnotifierwatcher.desktop
djh900@dh:~$

I switched on kdebugdialog for kded4. There's a bit of chatter as kded4 starts up, but nothing while the sshs are happening. See attachment.

[David H (david-houlder)]

For extra clarification: All services under "startup services" in the service manager had status "not running" during the test in #3 above.

[Launchpad Janitor (janitor)]

[Expired for kde4libs (Ubuntu) because there has been no activity for 60 days.]

[Harald Sitter (apachelogger)]

Not kded itself leaking then.

Please valgrind kded

kquitapp kded
valgrind kded4 --nofork (valgrind will probably want more arguments)

[Harald Sitter (apachelogger)]

It's a leak in polkit, it appears to register of the policyagent changed signal (or * signals) and then leaves the message pass by without freeing the allocated memory it appears.

[Launchpad Janitor (janitor)]

[Expired for policykit-1 (Ubuntu) because there has been no activity for 60 days.]

[Luis (luisflucas)]

This bug also affects me using kubuntu 14.04.
Any solution has been found?