On Sat, Mar 28, 2009 at 5:04 PM, nidhi mittal <nidhimittal19@xxxxxxxxx> wrote: > hi all > i compiled one of my kernel module > but the error i got is completely cryptic -- pl see -- whethr my kernel is > corrupted or what > o/p of make is > > make[1] Entering directory /usr/src/linux--- > Building modules , stage 1 > MODPOST 1 modules > WARNING "_fixunsdfsi" [/home/nidhi/<module_dir>/<module_name>.ko] undefined > WARNING "_adddf3" [/home/nidhi/<module_dir>/<module_name>.ko] undefined > WARNING "_floatunsidf" [/home/nidhi/<module_dir>/<module_name>.ko] undefined > make[1] Leaving directory /usr/src/linux-headers-2.6.27-generic > > > but what i found is i get a module.ko file > You should, because the linking of undefined symbol is done at the time of insmod and not the creation of kernel module. > and when i insmod it > o/p > insmod: error inserting 'blkdev.ko': -1 Unknown symbol in module > Do a dmesg and you will see that there is a message about the unknown symbol. See the message and figure out why that symbol is not present. Either it will be a spelling mistake or the symbol is not exported from the kernel. So, if the case is the later on do a EXPORT_SYMBOL(name of symbol) in the C file. HTH, > pl help > Nidhi > > > -- > Thanks & Regards > Nidhi -- Regards, Sandeep. “To learn is to change. Education is a process that changes the learner.” -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
