Strange kernel log message
bruce at cran.org.uk
Mon Nov 26 11:58:46 PST 2007
Giorgos Keramidas wrote:
> On 2007-11-26 09:58, Ceri Davies <ceri at submonkey.net> wrote:
>> 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 IEIIESSSAIAA S A f ffffff
>> WTF now?
>> I'm not sure if that's a real kernel message that got garbled or whether
>> I should be worried about naughtiness.
> It looks like multiple messages overlapping each other. Removing 3
> characters every 4 bytes in the output produces things which seem
> vaguely recognizable:
> <22NNI II A ,,,EISA fff
> <<2>NMI SS 300 ISAAfff
> 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 :)
The kernel option I've seen mentioned before to at least make this less
options PRINTF_BUFR_SIZE=128 # Prevent printf output being interspersed.
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