NMI received for unknown reason 29 on CPU 0.

Mitja Mihelic mitja.mihelic at cosylab.com
Tue Sep 5 14:35:58 UTC 2006


I still have to setup the sensors to read the CPU temperature,
but I got some more additional output that seems to be linked to the 
problem:

Sep  4 16:29:32 camera1 kernel: e1000: eth0: e1000_clean_tx_irq: 
Detected Tx Unit Hang
Sep  4 16:29:32 camera1 kernel:   Tx Queue             <0>
Sep  4 16:29:32 camera1 kernel:   TDH                  <6>
Sep  4 16:29:32 camera1 kernel:   TDT                  <49>
Sep  4 16:29:32 camera1 kernel:   next_to_use          <49>
Sep  4 16:29:32 camera1 kernel:   next_to_clean        <6>
Sep  4 16:29:32 camera1 kernel: buffer_info[next_to_clean]
Sep  4 16:29:32 camera1 kernel:   time_stamp           <66014>
Sep  4 16:29:32 camera1 kernel:   next_to_watch        <b>
Sep  4 16:29:32 camera1 kernel:   jiffies              <667eb>
Sep  4 16:29:32 camera1 kernel:   next_to_watch.status <0>
Sep  4 16:29:34 camera1 kernel: NETDEV WATCHDOG: eth0: transmit timed out
Sep  4 16:29:36 camera1 kernel: e1000: eth0: e1000_watchdog_task: NIC 
Link is Up 100 Mbps Full Duplex

I have no idea if it's bad or very bad.

--
Mitja

Tony Nelson wrote:
> At 4:24 PM +0200 9/4/06, Mitja Mihelic wrote:
>> We're running FC4 with the 2.6.16-1.2115_FC4 kernel on an Intel
>> based server with a 3GHz P4 HT CPU.
>> It runs OK for a while and then it starts to output messages at the
>> rate of about 65 per second, and then it freezes.
>>
>> Here's a sample output:
>>
>> Sep  4 10:39:26 camserver kernel: Do you have a strange power saving
>> mode enabled?
>> Sep  4 10:39:26 camserver kernel: Uhhuh. NMI received for unknown
>> reason 29 on CPU 0.
>> Sep  4 10:39:26 camserver kernel: Dazed and confused, but trying to 
>> continue
>> Sep  4 10:39:26 camserver kernel: Do you have a strange power saving
>> mode enabled?
>> Sep  4 10:39:26 camserver kernel: Uhhuh. NMI received for unknown
>> reason 39 on CPU 0.
>> Sep  4 10:39:26 camserver kernel: Dazed and confused, but trying to 
>> continue
>> Sep  4 10:39:26 camserver kernel: Do you have a strange power saving
>> mode enabled?
>>
>>
>> The obvious question is: what is this thing anyway, and how do we
>> make it go away ?
>
> WAG: is the CPU too hot?




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