New subject: [trinity-devel] Kdesktop_lock left running

5 Feb 2015

Hello,

We're seeing lots of kdesktop_lock processes left lying around after
users have logged out.  With the number of users (100+ on some of our
systems) and uptimes in years, the process table is going to end up full
of these :-(

If one does an strace on the process it terminates but not until then.

Here's a (partial) pstree of a user with a three hanging kdesktop_lock
processes:

...
 dbus-daemon(19522)
dbus-launch(19521)
dcopserver(19574)
kaccess(19656)
kded(19578)
kdeinit(19588)-+-kio_file(8614)
               |-klauncher(19591)
               |-konqueror(20688)
               `-kwin(19633)
kdesktop(19637)---kdesktop_lock(29060)
kdesktop_lock(20636)
kdesktop_lock(22549)
kdesktop_lock(22120)
klipper(19671)
kmix(19674)
knotify(19667)
korgac(19676)
krandrtray(19661)
kicker(19643)
ksmserver(19626)
startkde(19416)-+-gpg-agent(19518)
                |-kwrapper(19624)
                `-ssh-agent(19517) 
The 'spurious' kdesktop_locks end up with init as the PPID:

...
 F S   UID   PID  PPID   PGID C PRI  NI ADDR SZ WCHAN 
TTY          TIME CMD
0 S  1051 22549     1  22482 0  80   0 -  7739 -      ?        00:00:00 kdesktop_lock

Process 22482 (the PGID) doesn't exist.

When I do an strace on PID 20636 and I get:

...
 Process 20636 attached - interrupt to quit
--- SIGHUP (Hangup) @ 0 (0) ---
--- SIGTERM (Terminated) @ 0 (0) ---
munmap(0xb5b70000, 172873)              = 0
gettimeofday({1423135382, 387694}, NULL) = 0
gettimeofday({1423135382, 387815}, NULL) = 0
exit_group(1)                           = ? 
and the kdesktop_lock process is gone.

The version is:

...
 Qt: 3.3.8d
KDE: 3.5.13.2
KDesktop Locker: 2.1 
all running on Debian Wheezy.

Any suggestions as to how I stop this behaviour?

TIA.

-- 
 Regards,
     Russell
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| Russell Brown          | MAIL: russell(a)lls.com PHONE: 01780 471800 |
| Lady Lodge Systems     | WWW Work: http://www.lls.com              |
| Peterborough, England  | WWW Play: http://www.ruffle.me.uk         |
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