I think the unknown symbol message happens at link time (i.e., before
control is transferred to the loaded module.)
If there's an unknown symbol, it won't load, obviously.
I think depmod can give you a map of what modules depend on what symbols.
Neil
On Tue, Aug 31, 2010 at 10:09 AM, Jon Elson <[email protected]> wrote:
> OK, when insmod logs "Unknown symbol", is that caused by a specific
> error return
> from the kernel module? I'm trying to figure out whether insmod bombs out
> while inspecting the the module's symbol table (ie. before the driver
> gets control, in which
> case we can't do much) or after the driver gets control and fails to
> initialize with a zero
> return code, in which case we can print a much more detailed message.
> (The ppmc driver seems to only give a zero or -1 return code now.)
> Anybody know?
>
>
> Thanks,
>
> Jon
>
>
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