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Old 05-15-2008, 11:04 PM   #1
Registered: Dec 2004
Posts: 92

Rep: Reputation: 15
module Unknown symbol

kernel 2.6.9
module cmem_rcc_drv
compile ok
when insmod get:

insmod: error inserting 'cmem_rcc_drv.ko': -1 Unknown symbol in module

cmem_rcc_drv: Unknown symbol __copy_from_user_ll
cmem_rcc_drv: Unknown symbol __copy_to_user_ll

cat /proc/kallsyms |grep copy_from_user_ll
021c3188 t __copy_from_user_ll

in "arch/i386/kernel/i386_ksyms.c":


do i miss anything?
Old 05-16-2008, 05:14 AM   #2
Registered: Mar 2008
Posts: 53

Rep: Reputation: 15
You included the header <linux/uaccess.h> in you module?
Old 05-16-2008, 09:35 PM   #3
Registered: Dec 2004
Posts: 92

Original Poster
Rep: Reputation: 15
no <linux/uaccess.h>, but included <asm/uaccess.h>,
actually, i can't find linux/uaccess.h in my kernel src


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