From owner-freebsd-hackers@FreeBSD.ORG  Tue Jul 10 14:36:51 2012
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Date: Tue, 10 Jul 2012 16:36:44 +0200 (CEST)
From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Damien Fleuriot <ml@my.gd>
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Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>
Subject: Re: kernel: abra-kadabra
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On Tue, 10 Jul 2012, Damien Fleuriot wrote:

>
> On 10 Jul 2012, at 12:10, Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> wrote:
>
>> this is what i've got from kernel (same visible after dmesg of course)
>>
>>
>> Jul  9 08:56:53 ... kernel: <<66<>p>ipd6id  >p336i65d0 43432 ((hh6ttt6p2d4 )(t,p dht)t,pu di)du,i  ud1i 0d14 80:10 e44x88i::t eex die txoiedtn eo dn  sosini ggnsnaalilg  n1a1l
>> Jul  9 08:56:53 .. kernel: 1
>> Jul  9 08:56:53 ... kernel:
>> Jul  9 08:56:53 ... kernel: <<66>>11
>> Jul  9 08:56:53 ... kernel: 1
>> Jul  9 08:56:53 ... kernel:
>>
>> everything before and after seems usual.
>>
>> when reading every second letter it SEEMS to make more sense but still not much.
>>
>> What it is?
>>
>
> You're seeing several messages at jumbled together, or your message and other parts of the buffer.
>
> Either way, you can see the word "signal" there ;)
>
i think it was httpd (probably PHP trash) crashed with sig11 but want to 
be sure.

httpd rarely do crash... Strange i have ports rather up to date and no 
KNOWN vulnerabilities are according to portaudit output.

how can i prevent mixing kernel messages?

i have

options         PRINTF_BUFR_SIZE=256    # Prevent printf output being interspersed.

in kernel config