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From:	Gregor Waltz <gregor.waltz@raritan.com>
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Subject: Re: Toshiba JMR 3927 working setup?
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Florian Lohoff wrote:
> On Fri, Jan 04, 2008 at 01:40:46PM -0500, Gregor Waltz wrote:
>   
>> CRC Check passed
>> Image Started At Address 0x80020000.
>> Image Length = 3424394 (0x34408a).
>> Exception! EPC=80056eb4 CAUSE=30000008(TLBL)
>> 80056eb4 8ce4000c lw      a0,12(a3)                         # 0xc
>>     
>
> The exception comes from PMON too - Did you look up the EPC in your
> System.map file ?
>
>   
>> Further, the exception gets printed immediately after "Image Length = 
>> 3424394 (0x34408a)." The exception happens so soon that I doubt that the 
>> kernel does very much beforehand.
>>     
>
> The kernel seems to be initializing and steps upon an virtual address
> and triggers an TLB exception which as the kernel is not yet ready
> to handle it itself, thus PMONs exception handler gets triggered.
>
> My first guess is that you are catching a NULL Pointer exception
> somewhere.
>
> FLo
>   
Linux 2.6.23.9:
80056eb4 T kernel_execve

My coworker built Linux 2.6.23.12 and got:
EPC=80056ee0 which does not correspond to anything in his System.map.

With a different set of tools, I also built 2.6.21.7 and got:
EPC=80056eb8 which also does not correspond to anything in the 
corresponding System.map.

If this does not ring any bells, do you have any suggestions for how I 
could debug this issue?


Thanks