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how to solve oops message?

Posted on 2004-08-02
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Last Modified: 2010-04-21

 Is there any utility that does allow to debug the oops message that came when i compile a kernel and boot it?
Cuase it is also not capturable.
i want to know what cause the kernel panic interrupt.

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Question by:pancoder
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10 Comments
 
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Expert Comment

by:de2Zotjes
ID: 11698768
check the documentation in the kernel source tree:

Documentation/oops-tracing.txt

Has links to sites and everything..
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Author Comment

by:pancoder
ID: 11734012


     Is there any good software other thatn ksymoops?
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Expert Comment

by:de2Zotjes
ID: 11748567
I really can comment on that, I only briefly looked at ksymoops, and never looked for altenatives ( didn't need to)
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Expert Comment

by:de2Zotjes
ID: 11748573
oops, typo, the can is offcoure a can't
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Author Comment

by:pancoder
ID: 11760901

Hello de2zotjes,
            how to use it for conditions like this:-
    I have RH9 with its default kernel 2.4.20-8. i downloaded 2.4.24 kernel and make some changes to it and compile and create image from it. i add entry at GRUB to boot that image.
   Then when i boot it i get oops message. now i want to debug it and know which location or statement cause it? ksymoops require
-k /proc/ksyms (default)
     -l /proc/modules (default)
files but how can i give it as i am unable to boot that new image. i am able to boot nrmal statrup kernel.

help.
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Expert Comment

by:de2Zotjes
ID: 11787180
The text I brought to your attention addresses this problem as well.
As it says you have 3 choices:
1) hand copy the error codes to a file you feed to ksymoops
2) boot with a serial console and capture the error text on a remote machine
3) patch the kernel with a dump hack

Apart from those general tips you are basically on your own, I don't specialize in oops-tracing...
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Author Comment

by:pancoder
ID: 11857811
hello de2Zotjes,
        how to boot with serial console?
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Accepted Solution

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de2Zotjes earned 50 total points
ID: 11858070
Read serial-console.txt in /usr/src/linux???/Documentation
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