misc/89528: impossible to kill a jail

Bjoern A. Zeeb bzeeb-lists at lists.zabbadoz.net
Sat Dec 3 09:40:06 GMT 2005

The following reply was made to PR misc/89528; it has been noted by GNATS.

From: "Bjoern A. Zeeb" <bzeeb-lists at lists.zabbadoz.net>
To: Philippe Lang <philippe.lang at attiksystem.ch>
Cc: bug-followup at FreeBSD.org
Subject: RE: misc/89528: impossible to kill a jail
Date: Sat, 3 Dec 2005 09:31:30 +0000 (UTC)

 On Fri, 25 Nov 2005, Philippe Lang wrote:
 >> I just checked with my own machine where i had restarted a jail two days
 >> ago and it's still listed in jls though the sockets are gone (seen from
 >> the base system kind of view of course).
 > Same situation here.
 I tried to reproduce the problem on a second box with HEAD from some
 days ago and failed up to now.
 What I have found so far doing live system debugging ist that on the
 machine showing this problem the initial jail (id 1) that should
 be gone already still has a reference count of 2:
 (kgdb) print allprison->lh_first->pr_list->le_next->pr_list->le_next->pr_list->le_next->pr_list->le_next->pr_list->le_next->pr_id
 $9 = 1
 (kgdb) print allprison->lh_first->pr_list->le_next->pr_list->le_next->pr_list->le_next->pr_list->le_next->pr_list->le_next->pr_ref
 $10 = 2
 So it seems we are leaking some creds somewhere.
 What I should know from you:
 a) which branch are you running? RELENG_{5,6} or HEAD
 b) if it's not a RELEASE which exact build dates?
     (something like uname -s -v would be a good starting point)
 c) are you running with any patches like multi-IP jail patches?
 d) Do you know a way to successfully reproduce it all the time?
 Bjoern A. Zeeb				bzeeb at Zabbadoz dot NeT

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