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Date: Tue, 27 Nov 2007 13:34:43 +0000
From: Ceri Davies <ceri@submonkey.net>
To: Bruce Cran <bruce@cran.org.uk>
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Sender: Ceri Davies <ceri@submonkey.net>
Cc: Giorgos Keramidas <keramida@ceid.upatras.gr>, questions@freebsd.org
Subject: Re: Strange kernel log message
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On Mon, Nov 26, 2007 at 07:58:41PM +0000, Bruce Cran wrote:
> Giorgos Keramidas wrote:
>> On 2007-11-26 09:58, Ceri Davies <ceri@submonkey.net> wrote:
>>  =20
>>> So I have this in my security run output:
>>> kernel log messages:
>>> +++ /tmp/security.hLYJI0kF	Sun Nov 25 03:01:02 2007
>>> +<<<<222>2>>>NNNMNMMIII M  III SIISAS SAAA  3 303,020,0 ,,  EE=20
>>> IEIIESSSAIAA S A f ffffff
>>> +
>>> +
>>> +f
>>>=20
>>> WTF now?
>>>=20
>>> I'm not sure if that's a real kernel message that got garbled or whether
>>> I should be worried about naughtiness.
>>>    =20
>>=20
>> It looks like multiple messages overlapping each other.  Removing 3
>> characters every 4 bytes in the output produces things which seem
>> vaguely recognizable:
>>=20
>>     <22NNI II A ,,,EISA  fff
>>     <<2>NMI  SS 300  ISAAfff
>>=20
>> There's a sysctl option which you can tweak to make this less likely to
>> happen, but I am not sure about its name.  Our console gurus can help
>> you track it down and tune its value :)
>=20
> The kernel option I've seen mentioned before to at least make this less=
=20
> common is:
>=20
> options PRINTF_BUFR_SIZE=3D128    # Prevent printf output being intersper=
sed.

Aha, thanks guys.

Ceri
--=20
That must be wonderful!  I don't understand it at all.
                                                  -- Moliere

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