sshd with zombie process on FreeBSD 10.0-STABLE - workaround

[Marcelo Gondim]

Em 19/03/14 13:01, Kevin Oberman escreveu:
> On Wed, Mar 19, 2014 at 6:00 AM, Marcelo Gondim <gondim at bsdinfo.com.br>wrote:
>
>> Hi all,
>>
>> While the solution does not appear, did the script below and put it in
>> crontab to automatically delete zombie sshd processes.
>>
>> the_walking_dead.sh:
>>
>> #!/bin/sh
>> kill -9 `ps afx|grep sshd|grep unknown|awk '{print $1}'`
>>
>>
>> Put this in /etc/crontab:
>>
>> 00 1 * * *    root    the_walking_dead.sh
>>
>>
> If 'kill -9' works, the process is not really a zombie. It simply still has
> a socket open and is waiting for it to be closed before exiting.
>
> You might takes a look at network sockets with sockstat(1) and see if you
> can get any indication of why these sockets are not being closed. It may be
> that the issue is not sshd but some other issue in the OS leaving sockets
> open.
>
Hi Kevin,

My ps -afx below:

[...]
42139  -  Is       0:00.01 sshd: unknown [priv] (sshd)
42140  -  Z        0:00.01 <defunct>
42141  -  IW       0:00.00 sshd: unknown [pam] (sshd)
58445  -  Is       0:00.01 sshd: unknown [priv] (sshd)
58446  -  Z        0:00.02 <defunct>
58447  -  IW       0:00.00 sshd: unknown [pam] (sshd)
65635  -  Is       0:00.01 sshd: vinicius [priv] (sshd)
65636  -  Z        0:00.01 <defunct>
[...]

# sockstat | grep 42140
#

# sockstat | grep 58446
#

# sockstat | grep 65636
#

No associated socket with zombie process.