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Some observations on ssh/sshd

From: Svante Signell
Subject: Some observations on ssh/sshd
Date: Wed, 09 Sep 2015 08:09:11 +0200

1) In more than 50% of the times of removing a socket with unink or rm
ssh/sshd hangs. The only way out is to break the ssh session with e.g.
~. and start again.

2) Starting sshd on the client normally, ssh connections are not
responding until 
task (/bin/sh(576)) increasing a bogus port 104 by 1, most probably a
task (/bin/sh(576)) deallocating a bogus port 104 by 1, most probably a

3) When ssh connections are locked, see 2) above, logging in on the
console and
/etc/init.d/ssh stop
/etc/init.d/ssh start
usually hangs the sshd start. Breaking the start with ^C/^Z often
results in a segfault. After that sshd starts fine.

ps -feM|grep ssh
 root   974     1  0:00.01 /usr/sbin/sshd
 root  1001   974  0:00.03 /usr/sbin/sshd -R
<user> 1003  1001  0:00.01 /usr/sbin/sshd -R

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