I have compile source code for application. That compiling was succeed. But when i want to 'insmod' in kernel, some error like :

net.o: unresolved symbol net_random_Rsmp_1c66f64c
net.o: unresolved symbol try_inc_mod_count_Rsmp_e6105b23
net.o: unresolved symbol __pskb_pull_tail_Rsmp_33ba4209
net.o: unresolved symbol proc_net_Rsmp_d3d4c903
net.o: unresolved symbol __release_sock_Rsmp_63d0a579
net.o: unresolved symbol proc_dointvec_Rsmp_8d06b825
net.o: unresolved symbol pskb_expand_head_Rsmp_9439c693

i wish , all friends can help my problem

hi,
This indicates that your linux kernel has module versioning turned on. To check this, you can run -

cat /usr/src/linux/.config | grep MOD

and if you see

CONFIG_MODULES=y
CONFIG_MODVERSIONS=y
CONFIG_KMOD=y

I have to edit that. However i don't want to compile kernel. But i just make 'Makefile' in directory source code. Like 'unionsfs' that make module kernel without to recompile kernel. Just 'insmod -f' unionsfs.o , the kernel have support it.

I wass compiling Success,compile is net_app.o but when i insert this module there are many unresolve symbol

hi,
You need to add -DMODVERSIONS to make compile command. e.g
gcc -D__KERNEL__ -DMODULE -DMODVERSIONS -I/usr/src/linux/include -c net.c

DEBUGFLAGS = -DCONFIG_IP_VS_DEBUG -g

KERNELSOURCE = linux
KERNELRELEASE = $(shell echo -e "\#include <linux/version.h>\nUTS_RELEASE" \
> conftest.c && \
gcc -E -I$(KERNELSOURCE)/include conftest.c | tail -1 \
| cut -d '"' -f 2 && rm -f conftest.c)

KERNELSYMS = /boot/System.map-$(KERNELRELEASE)

MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)/kernel/net/ipv4/ipvs/

# Set DEPMOD_OPTS if INSTALL_MOD_PATH is not null
ifneq (, $(INSTALL_MOD_PATH))
DEPMOD_OPTS = -b $(INSTALL_MOD_PATH)
endif

CC = gcc
CFLAGS = -D__KERNEL__ -DMODULE -DEXPORT_SYMTAB -DMODVERSIONS \
$(DEBUGFLAGS) -O2 -Wall -Wstrict-prototypes \
-I$(KERNELSOURCE)/include \
-include $(KERNELSOURCE)/include/linux/modversions.h

CORE = net.o
CORE_OBJS = net_conn.o net_core.o net_ctl.o net_sched.o

SCHEDULERS = net_conn.o net_core.o net_ctl.o net_sched.o

APPMODS = net_ftp.o


all: $(CORE) $(SCHEDULERS) $(APPMODS)

ip_vs.o: $(CORE_OBJS)
$(LD) -r $^ -o $@

install: net.o
-rmmod net
insmod net.o
lsmod

modules_install:
if [ ! -d "$(MODLIB)" ]; then mkdir -p "$(MODLIB)"; fi
install -m 600 -c $(CORE) $(SCHEDULERS) $(APPMODS) "$(MODLIB)"
depmod -ae -F $(KERNELSYMS) $(DEPMOD_OPTS) $(KERNELRELEASE)

modules_uninstall:
(cd "$(MODLIB)"; rm -f $(CORE) $(SCHEDULERS) $(APPMODS))
rmdir "$(MODLIB)"

clean:
rm -f *.o *~ *.bak *.orig *.rej


################
this is Makefile file. What wrong ?