how to debug watchdog reset problems

[Ryan]

Hello,

I am using a 3.10 kernel on a product. As soon as i get the shell
prompt is displayed - The serial console freezes indicating an
apparent hang
and watchdog does a hardware reset.


I wanted to check if there is a way of debugging such an issue. I know
that record saying "entering function" and "exiting function"
somewhere
in the memory which i could access after reset and then find out who
cause the freeze.

However, then i need to add such an instrumentation to the whole
kernel. which is very time consuming and a real pain.

Could anyone suggest a better way of debugging kernel freeze.


Thanks and Regards,
Ryan.
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