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Old 01-25-2012, 02:21 PM   #1
junping2000
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Help to interpret a kernel hang


Hi, there,

We have a system hang once in a while on one of our machines. When it happens, it's not pingable, and the console has output like this:

Call Trace:
Code: 1d 0c b4 9a 00 48 89 ... <75> ...
Stack:
Call Trace:
Code: a2 81 48 89 1d 0c b4 9a 00 .. <f6> ...
Stack:

Basically, the call trace and stack are both empty, so is there a good way to just interpret the "Code:" Output?

Thanks in advance,
 
Old 01-25-2012, 05:32 PM   #2
eeekster
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Is there anything else on the console? Anything in the logs?
 
Old 01-26-2012, 12:56 PM   #3
junping2000
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> Is there anything else on the console? Anything in the logs?

No, it's a hard hang, so nothing would get to /var/log/messages.
 
Old 01-26-2012, 01:04 PM   #4
TB0ne
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Quote:
Originally Posted by junping2000 View Post
> Is there anything else on the console? Anything in the logs?

No, it's a hard hang, so nothing would get to /var/log/messages.
Well, sometimes there's stuff in the log from before the hang that can give you a clue. Snip the logs off, and look for similarities when it happens. Also, you don't say what version/distro of Linux you're using, or what the function of this machine is, or what kind of hardware it's running on, which could all have bearing on the problem.
 
  


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