From owner-freebsd-hackers@FreeBSD.ORG  Fri Dec  1 10:47:36 2006
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Date: Fri, 1 Dec 2006 13:47:33 +0300 (MSK)
From: Maxim Konovalov <maxim@macomnet.ru>
To: Steven Hartland <killing@multiplay.co.uk>
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Cc: freebsd-hackers@freebsd.org
Subject: Re: Unable to stop a jail
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On Fri, 1 Dec 2006, 10:43-0000, Steven Hartland wrote:

> We've got a jail here which we cant stop with either killall
> jexec or jkill all return success but jls still reports
> the jail as running.
>
> The machines running several other jails which I cant restart
> at this time so I ended up starting the jail again jls
> now reports:
> jls
>   JID  IP Address      Hostname   Path
>     9  10.10.0.5     jail6        /usr/local/jails/jail6
>     7  10.10.0.5     jail6        /usr/local/jails/jail6
>     6  10.10.0.4     jail5        /usr/local/jails/jail5
>     5  10.10.0.39    jail4        /usr/local/jails/jail4
>     3  10.10.0.6     jail3        /usr/local/jails/jail3
>     2  10.10.0.8     jail2        /usr/local/jails/jail2
>     1  10.10.0.7     jail1        /usr/local/jails/jail1
>
> Host machine is running FreeBSD-6.1-P10
>
> Any ideas some sort of kernel data corruption?

Known bug, discussed several times.  IIRC leaked struct ucred.

-- 
Maxim Konovalov