Executing remote commands via ssh causes zombie process

["Martin Burger" <m@rtin-burger.de>]

> I'm trying to execute a command on my Sarge box using plink (Putty) on
> Windows XP. E.g.: plink -A -2 -ssh auser@host.some.where ls -l
> with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org

I tried to execute the command "ls -l" using the ssh executable on the
Debian box:

mburger@host:~$ ssh mburger@host.some.where ls -l

That caues such zombie processes, too:

mburger@host:~$ ps ux
USER       PID %CPU %MEM   VSZ  RSS TTY      STAT START   TIME COMMAND
[...]
mburger  29076  0.0  0.1 11940 2028 ?        S    19:09   0:00 sshd:
mburger@notty
mburger  29077  0.0  0.0     0    0 ?        Zs   19:09   0:00 [ls]
<defunct>
[...]

So, it's not relevant whether I use plink or ssh. It's a general
problem: If I execute a command on the Debian box remotely via ssh
protocol, a zombie process occurs. Could that be a bug in bash? Or in
the ssh daemon? Or...

Regards, Martin