Hi, On Tue, Sep 13, 2011 at 4:24 AM, Jorgyano Bruno <jorgyano@gmail.com> wrote:
On Tue, Sep 13, 2011 at 6:06 AM, kashish bhatia <koolest77@gmail.com> wrote:
Hi all, I am trying to port a kernel module from 2.6.23 kernel to 2.6.32 kernel.
While inserting the module , it shows an error :
insmod : error inserting 'module.ko' : -1 Unknown symbol in module
I checked in /var/log/messages for the unknown symbol and it shows,
module : no symbol version for function_name
Can anybody explain what is this error and how to resolve this error ?
-- Thanks & Regards, Kashish Bhatia
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Are you building it out of tree?
Your module is trying to use an exported symbol, perhaps it is a symbol exported from another module, for cases like this modprobe works better than insmod. Try modprobe and it should works.
The other reason that it might appear to be missing a symbol is because the symbol is exported as a GPL symbol, and you're missing the MODULE_LICENSE( "GPL" ); in your module. -- Dave Hylands Shuswap, BC, Canada http://www.davehylands.com