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Date:      Fri, 2 Apr 2010 13:12:40 +0000 (UTC)
From:      "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>
To:        Oleg Lomaka <oleg.lomaka@gmail.com>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: panic during work with jailed postgresql8.4
Message-ID:  <20100402131114.T40281@maildrop.int.zabbadoz.net>
In-Reply-To: <363ECEF2-62D3-4F97-A21D-9E10358A1065@gmail.com>
References:  <44FD9C14-7114-4270-A7B6-F029995BA282@gmail.com> <20100402120137.E40281@maildrop.int.zabbadoz.net> <363ECEF2-62D3-4F97-A21D-9E10358A1065@gmail.com>

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On Fri, 2 Apr 2010, Oleg Lomaka wrote:

Hey,

>>> uname -a
>>> FreeBSD cerberus.regredi.com 8.0-STABLE FreeBSD 8.0-STABLE #7 r206031: Thu Apr  1 13:43:57 EEST 2010     root@cerberus.regredi.com:/usr/obj/usr/src/sys/GENERIC  amd64
>>>
>>> Link to dmesg.boot:
>>> http://docs.google.com/leaf?id=0B-irbkAqk9i7OGY2ZWJiODgtOWJmMy00NDQ1LTliZDctZjU3N2YwNmMxNjZl&hl=en
>>>
>>> Link to kernel core backtrace:
>>> http://docs.google.com/Doc?docid=0AeirbkAqk9i7ZGc5Yzc2ZndfM2M4NzYydmRw&hl=en
>>>
>>> Can I help to spot this trouble by providing additional info?
>>
>> Looking at the info I doubt it's related to jails or Pg in first
>> place.  Have you been running that same setup already before your Apr
>> 1st, r206031, kernel?  If so, from when was your last kernel?
>
> Yes, this configuration works on another server fine (8.0-STABLE FreeBSD 8.0-STABLE #3 r205202)
>
> Made few more tests. All tests I make using psql command (as it is 100% reproducible, may be now try spot it using telnet/netcat, without involving pg). psql accomplish login operation fine, panic appears after i run any command like \d, so I think it depends on packet size.
>
> Current picture is:
> 1. When connect from host machine - works fine.
> 2. When I connect from other server - works fine.
> 3. When connect from another jail on the same box as db's jail (tried from few jails) - kernel fault.
>
> Also tried security.jail.allow_raw_sockets on/off - nothing changes.

In addition to the private mail I have just sent you, the first thing
you might try it to updat again; I hadn't realized before that your
r206031 seems to be in the middle of a multi-commit merge from two
people.

It would be worth to update to the latest stable/8 and try again
first.


/bz

-- 
Bjoern A. Zeeb         It will not break if you know what you are doing.



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