[Bug 407428] [NEW] sshd zombie processes and strange behavior after karmic upgrade

[Mathias Gug]

Hi Michael,

On Fri, Jul 31, 2009 at 05:24:34PM -0000, Michael Helmling wrote:
> Public bug reported:
> 
> Binary package hint: openssh-server
> 
> Hi, since upgrading to karmic on one machine I get a strange behavior of
> sshd:
> 
> - After exitting an SSH-session, the terminal on the client machine hangs instead of closing
> - On the server there is a "sshd <defunct>" after each such session (this is especially annoying since I have a nagios server checking the SSH status every few minutes, so the number of zombie processes rapidly increases)
> - Additionally, I noticed that "Ctrl-C" does not work inside the SSH session, which is a bash shortcut that I use very often ;-) (should start a new empty command line ignoring what you've entered so far)
> 
> 
> Restarting sshd takes exceptionally long, but at least kills all the zombies.
> When I'm working on a terminal directly at the machine (i.e. not over SSH), the behavior is totally normal, so I consider this an ssh (or at least ssh-related) bug.
> 

I've seen a similar behavior when I clone virtual machines. Rebooting
the virtual instance fixes all of the issue though.

Is your system a virtual machine or a physical machine? What happens if
you reboot the system? How is the system installed (from an iso, the
network)?

  status incomplete

-- 
Mathias Gug
Ubuntu Developer  http://www.ubuntu.com


** Changed in: openssh (Ubuntu)
       Status: New => Incomplete

-- 
sshd zombie processes and strange behavior after karmic upgrade
https://bugs.launchpad.net/bugs/407428
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