Re: kgdb ksymtab_addr not found!!

[Amit S. Kale]

jalaja devi wrote:
> 
> Hi,
> 
> I have 2 quesions here:
> 
> 1. Could any plz tell me what am i missing out here?
> 
> I basically, trying to debug my my loadable module in
> kernel in kernel2.4.6 version. I patched the kernel
> with 2.4.6 kgdb patch, using the recent version.
> 
> I am using the modutils shell script to load my module
> loadmodule.sh which creates a gdbscript. When I source
> the gdbscript I get the following warnings:
> 
> warning : section _ksymtab not found in mymodule.o
> warning : section _archdata not found in mymodule.o
> 
> Do I need to patch the kernel with the modutils. Why
> do I get these warnings.

These warnings can be safely ignored.

> 
> 2. How can I put a breakpoint to debug my init_module?
> Which is the Kernel Fxn to be invoked to put a
> breakpoint in my init_module?

You can place a breakpoint just before the the statement
where kernel calls init_module. Then load the generated
gdb script into gdb once the breakpoint is hit. Now you
can place a breakpoint directly into any statement in the
module code.

> 
> Thanks in advance,
> 
> Jalaja
> 
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-- 
Amit Kale
Veritas Software ( http://www.veritas.com )