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Old 03-12-2006, 10:43 PM   #1
stlyz3
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Registered: Mar 2005
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Kernel Errors on Web Server - Security


Hello everyone.

I have a production web server and here lately every couple of weeks, the server stops running. The culprit seems to be a series of nasty kernel errors. They conclude with the following statement:

Kernel Panic - Not Syncing: Aiee, killing interupt handler.

Is there a cause for something like this or has the server been hacked?

Configuration is:
APF Firewall
BFD Installed
CentOS 4
Rkhunter
Chkrootkit both installed

Any help provided will be greatly appreciated.
 
Old 03-13-2006, 06:50 PM   #2
unSpawn
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lately every couple of weeks, the server stops running.
Did you check what config actions, upgrades, whatever else was done around the last date the box was stable?
Do you have any long range SAR data to check for irregularities?
Where/are there any anomalies in the system/daemon logs except the oops itself?


The culprit seems to be a series of nasty kernel errors. They conclude with the following statement: Kernel Panic - Not Syncing: Aiee, killing interupt handler.
The "Aiee" line in itself is not important, the surrounding lines are. Have a look at /usr/src/linux/Documentation/oops-tracing.txt. Basically sez feed oops log to ksymoops. Posting those lines could help.


Is there a cause for something like this or has the server been hacked?
Can't evaluate: not enough info.
 
  


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