Hi, Please see my comments inline. On Fri, Sep 21, 2012 at 2:39 PM, Pritam Bankar <pritambankar1988@xxxxxxxxx> wrote: > Hi Ramesh thanks for great pdf. From whatever I understood after > reading I fired command modinfo on my module and it gave output , > > vermagic: 3.2.0-23-generic-pae SMP mod_unload modversions 686 > > greping out vermagic. So I believe vermagic is behaving correctly. > What is 686 in output ? It represents the arch. the module is built for. In this case, it is 686. > Any other reason for missing __versions section ? The other reason for invalid format is mismatch in arch. like mips vs 686. It looks like you are trying to run this module on a 386 machine. Can you confirm you have recompiled the module on the kernel you are trying to link. Thanks, Ramesh > > On Wed, Sep 19, 2012 at 6:24 AM, Ramesh.P <rameshpa@xxxxxxxxx> wrote: >> Hi, >> >> 'Invalid module' is typically thrown when you don't compile your >> module against the kernel you are linking into. I think __versions >> section is added by vermagic.o as part of build process. Please refer >> http://lwn.net/images/pdf/LDD3/ch02.pdf, Version dependency section >> for more details. >> >> Thanks, >> Ramesh >> >> On Tue, Sep 18, 2012 at 7:10 AM, Pritam Bankar >> <pritambankar1988@xxxxxxxxx> wrote: >>> On Tue, Sep 18, 2012 at 7:27 PM, Pritam Bankar >>> <pritambankar1988@xxxxxxxxx> wrote: >>>> Any idea what causes __versions section to get added in *.ko module. A >>>> simple hello.ko on ubuntu 12.04 i386 machine gets loaded successfully. >>>> Other module just doesn't get loaded giving error " Invalid module ". >>>> When I compared both modules with objdump -h I found __versions >>>> section was missing from second module and that can be the reason its >>>> not getting loaded. How can I add this section to other .ko ? What >>>> causes __versions to get added in ko ? >>> >>> >>> I have compiled both modules with modpost and Module.symvers. >>> >>> >>> Thanks, >>> Pritam Bankar >>> >>> -- >>> >>> Pritam Bankar >>> >>> _______________________________________________ >>> Kernelnewbies mailing list >>> Kernelnewbies@xxxxxxxxxxxxxxxxx >>> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > > > -- > > Pritam Bankar _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
