On Thu, Feb  5, 2015 at 15:13 (+0000), Russell Brown wrote:

> 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:


>>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.

That is partially because PGID is not a process id, it is a process
group ID.

Cheers.

                                Jim