How do i see that?

/Jesper


On 2011-04-11 16:27, Philippe Gerum wrote:
> On Mon, 2011-04-11 at 16:20 +0200, Jesper Christensen wrote:
>   
>> Problem is the NIP in question is the address of the thread structure as
>> seen in the error message.
>>     
> LR?
>
>   
>> /Jesper
>>
>>
>> On 2011-04-11 16:18, Philippe Gerum wrote:
>>     
>>> On Mon, 2011-04-11 at 16:13 +0200, Jesper Christensen wrote:
>>>   
>>>       
>>>> I have updated to xenomai 2.5.6, but i'm still seeing exceptions
>>>> (considerably less often though):
>>>>
>>>> Xenomai: suspending kernel thread b92a39d0 ('tt_upgw_0') at 0xb92a39d0
>>>> after exception #1792
>>>>     
>>>>         
>>> You should build your code statically into the kernel, not as a module,
>>> and find out which code raises the MCE.
>>>
>>> CONFIG_DEBUG_INFO=y, then objdump -dl vmlinux, looking for the NIP
>>> mentioned.
>>>
>>>   
>>>       
>>>> /Jesper
>>>>
>>>>
>>>> On 2011-04-08 15:12, Philippe Gerum wrote:
>>>>     
>>>>         
>>>>> On Fri, 2011-04-08 at 14:58 +0200, Jesper Christensen wrote:
>>>>>   
>>>>>       
>>>>>           
>>>>>> Hi
>>>>>>
>>>>>> I'm trying to implement some gateway functionality in the kernel on a
>>>>>> emerson CPCI6200 board, but have run into some strange errors. The
>>>>>> kernel module is made up of two threads that run every 1 ms. I have also
>>>>>> made use of the rtpc dispatcher in rtnet to dispatch control messages
>>>>>> from a netlink socket to the RT part of my kernel module.
>>>>>>
>>>>>> The problem is that when loaded the threads get suspended due to 
>>>>>> exceptions:
>>>>>>
>>>>>> Xenomai: suspending kernel thread b929cbc0 ('tt_upgw_0') at 0xb929cbc0
>>>>>> after exception #1792
>>>>>>
>>>>>> or
>>>>>>
>>>>>> Xenomai: suspending kernel thread b929cbc0 ('tt_upgw_0') at 0x0 after
>>>>>> exception #1025
>>>>>>
>>>>>> or
>>>>>>
>>>>>> Xenomai: suspending kernel thread b911f518 ('rtnet-rtpc') at 0xb911f940
>>>>>> after exception #1792
>>>>>>
>>>>>>
>>>>>> I have ported the "gianfar" driver from linux to rtnet.
>>>>>>
>>>>>> The versions and hardware are listed below. The errors are most likely
>>>>>> due to faulty software on my part, but i would like to ask if there are
>>>>>> any known issues with the versions or hardware i'm using. I would also
>>>>>> like to ask if there are any ways of further debugging the errors as i
>>>>>> am not getting very far with the above messages.
>>>>>>     
>>>>>>         
>>>>>>             
>>>>> A severe bug at kthread init was fixed in the 2.5.5.2 - 2.5.6 timeframe,
>>>>> which would cause exactly the kind of weird behavior you are seeing
>>>>> right now. The bug triggered random code execution due to stack memory
>>>>> pollution at init on powerpc for Xenomai kthreads:
>>>>> http://git.xenomai.org/?p=xenomai-rpm.git;a=commit;h=90699565cbce41f2cec193d57857bb5817efc19a
>>>>> http://git.xenomai.org/?p=xenomai-rpm.git;a=commit;h=da20c20d4b4d892d40c657ad1d32ddb6d0ceb47c
>>>>> http://git.xenomai.org/?p=xenomai-rpm.git;a=commit;h=a5886b354dc18f054b187b58cfbacfb60bccaf47
>>>>>
>>>>> You need at the very least those three patches (from the top of my
>>>>> head), but it would be much better to upgrade to 2.5.6.
>>>>>
>>>>>   
>>>>>       
>>>>>           
>>>>>> System info:
>>>>>>
>>>>>> Linux kernel: 2.6.29.6
>>>>>> i-pipe version: 2.7-04
>>>>>> processor: powerpc mpc8572
>>>>>> xenomai version: 2.5.3
>>>>>> rtnet version: 0.9.12
>>>>>>
>>>>>>     
>>>>>>         
>>>>>>             
>>>>>   
>>>>>       
>>>>>           
>>>> _______________________________________________
>>>> Xenomai-core mailing list
>>>> Xenomai-core@gna.org
>>>> https://mail.gna.org/listinfo/xenomai-core
>>>>     
>>>>         
>>>   
>>>       
>>     
>   


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