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

Michael Helmling supermihi at web.de
Fri Jul 31 18:24:34 BST 2009


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.

** Affects: openssh (Ubuntu)
     Importance: Undecided
         Status: New

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