Insmod failed

Hi,

I'am porting driver for my USB 2.0 device to 2.5 and when I try insmod my module I get the following:

Error inserting '/lib/modules/2.5.54/misc/usb-emise.o': -1 Invalid module format

I compile my module separate of kernel tree with Makefile similar to that in Linux Device Drivers book (Rubini, Corbet). What is the right way to compile standalone modules?

module-init-tools version 0.9.7, kenrel 2.5.52,54

objdump -h /lib/modules/2.5.54/misc/usb-emise.o

/lib/modules/2.5.54/misc/usb-emise.o: file format elf32-i386

Sections:

Idx Name          Size      VMA       LMA       File off  Algn
  0 .text         00001b94  00000000  00000000  00000034  2**2

CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
1 .data 000001c0 00000000 00000000 00001be0 2**5
CONTENTS, ALLOC, LOAD, RELOC, DATA
2 .bss 00000000 00000000 00000000 00001da0 2**2
ALLOC
3 .note 00000014 00000000 00000000 00001da0 2**0
CONTENTS, READONLY
4 .stab 00007bd8 00000000 00000000 00001db4 2**2
CONTENTS, RELOC, READONLY, DEBUGGING
5 .stabstr 0001893f 00000000 00000000 0000998c 2**0
CONTENTS, READONLY, DEBUGGING
6 .rodata.str1.32 00000aa0 00000000 00000000 000222e0 2**5
CONTENTS, ALLOC, LOAD, READONLY, DATA
7 .rodata.str1.1 00000129 00000000 00000000 00022d80 2**0
CONTENTS, ALLOC, LOAD, READONLY, DATA
8 __obsparm 00000080 00000000 00000000 00022ec0 2**5
CONTENTS, ALLOC, LOAD, DATA
9 .rodata 00000004 00000000 00000000 00022f40 2**2
CONTENTS, ALLOC, LOAD, READONLY, DATA
10 .init.text 000000c8 00000000 00000000 00022f44 2**2
CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
11 .exit.text 00000098 00000000 00000000 0002300c 2**2
CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
12 .comment 00000037 00000000 00000000 000230a4 2**0
CONTENTS, READONLY

Thanks
Michal Sojka

Kai posted the following a few weeks ago:
-----
Well, you can do

cd my_module
echo "obj-m := my_module.o" > Makefile
vi my_module.c
make -C <path/to/kernel/src> SUBDIRS=$PWD modules
-----

Let me know if this solves the problem,

Sam

| Hi,

On Tue, 7 Jan 2003, Michal Sojka wrote:

| I'am porting driver for my USB 2.0 device to 2.5 and when I try insmod
| my module I get the following:
|
| Error inserting '/lib/modules/2.5.54/misc/usb-emise.o': -1 Invalid
| module format

Add a -DKBUILD_MODNAME="yourname" compile option to one of the files, the new loader requires a module name section. It should be only set once for each module.

In addition make sure you're using the new style module_init/module_exit macros instead of init_module/cleanup_module.

| I compile my module separate of kernel tree with Makefile similar to
| that in Linux Device Drivers book (Rubini, Corbet). What is the right
| way to compile standalone modules?

Try to folllow this reciept [recipe] posted by Kai G.
-------------
Well, you can do

cd my_module
echo "obj-m := my_module.o" > Makefile
vi my_module.c
make -C <path/to/kernel/src> SUBDIRS=$PWD modules

That's not too bad (and basically works for 2.4 as well)
---------------

| module-init-tools version 0.9.7, kenrel 2.5.52,54
|
| objdump -h /lib/modules/2.5.54/misc/usb-emise.o
|
| /lib/modules/2.5.54/misc/usb-emise.o:     file format elf32-i386
|
| Sections:
| Idx Name          Size      VMA       LMA       File off  Algn
|    0 .text         00001b94  00000000  00000000  00000034  2**2
|                    CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
|    1 .data         000001c0  00000000  00000000  00001be0  2**5
|                    CONTENTS, ALLOC, LOAD, RELOC, DATA
|    2 .bss          00000000  00000000  00000000  00001da0  2**2
|                    ALLOC
|    3 .note         00000014  00000000  00000000  00001da0  2**0
|                    CONTENTS, READONLY
|    4 .stab         00007bd8  00000000  00000000  00001db4  2**2
|                    CONTENTS, RELOC, READONLY, DEBUGGING
|    5 .stabstr      0001893f  00000000  00000000  0000998c  2**0
|                    CONTENTS, READONLY, DEBUGGING
|    6 .rodata.str1.32 00000aa0  00000000  00000000  000222e0  2**5
|                    CONTENTS, ALLOC, LOAD, READONLY, DATA
|    7 .rodata.str1.1 00000129  00000000  00000000  00022d80  2**0
|                    CONTENTS, ALLOC, LOAD, READONLY, DATA
|    8 __obsparm     00000080  00000000  00000000  00022ec0  2**5
|                    CONTENTS, ALLOC, LOAD, DATA
|    9 .rodata       00000004  00000000  00000000  00022f40  2**2
|                    CONTENTS, ALLOC, LOAD, READONLY, DATA
|   10 .init.text    000000c8  00000000  00000000  00022f44  2**2
|                    CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
|   11 .exit.text    00000098  00000000  00000000  0002300c  2**2
|                    CONTENTS, ALLOC, LOAD, RELOC, READONLY, CODE
|   12 .comment      00000037  00000000  00000000  000230a4  2**0
|                    CONTENTS, READONLY

See a pattern here? :)

~Randy