> I have written a small sample code for testing the EXPORT_SYMBOL macro > which exports the symbols to the global kernel symbol table. The sample > code is working fine in 2.6.9-1.667 kernel version, however it does not > works fine in 2.6.28 kernel version. I am getting the following errors > in 2.6.28 kernel version only. > > insmod: error inserting 'import_func.ko': -1 Unknown symbol in module > > When I see the /var/log/messages through dmesg command, I got the > following. > > import_func: no symbol version for myexportfun > import_func: Unknown symbol myexportfun > > The procedure I used for testing is as follows. > > 1) Insert the export_func module as > insmod export_func.ko > 2) Check whether the symbols are exported or not > cat /proc/kallsyms | grep myexp > 3) The function was exported fine and able to see the names in the > global kernel symbol table. > 4) Now, insert the import_func module as > insmod import_func.ko > > Then I got the above errors. But the same code is working fine in > 2.6.9-1.667 kernel version without any errors. Please some one correct > me what am I doing wrong. Dear All, The problem resolved. Actually, I have two different directories as export and import. The export directory has export functions and import directory has import files. When I build the export_func.ko file, I got the Module.symvers file with my exported function names. However, I got the Module.symvers file in the import directory also with ZERO bytes. So, I copied the Module.symvers from export directory to import directory, then it works fine without any issues. I did not understand the Module.symvers issue. However, it contains all the exported API names along with the paths. Currently, I am looking into Module.symvers. What it is and Why is it required and how? FYI - When I do the same procedure in Linux kernel 2.6.9-1.667 version, I did not get the Module.symvers file at all. If any one has any ideas about Module.symvers file, please let me know. Thanks and Regards, Srinivas G -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
