Cloop.ko...invalid module format

[chowdah45416]

I've remastered my Knoppix 4.0.2 without problems, but now I'm working on putting in my own custom kernel. I've gotten the sources for kernel 2.6.15 and compiled it fine. I've also compiled cloop 2.0.2 and unionfs 1.1.3. Modinfo shows the version on both cloop.ko and unionfs.ko to match the 2.6.15 kernel. I've been able to fix any problems so far with the amazing HOWTOs that I've found here. Also, I changed my minirt.gz from initRD to initRAMFS.

The problem I'm having now is when I go to boot the cd with qemu. It starts ok, but when it get to accessing the KNOPPIX cd, I get an "insmod: error inserting '/modules/cloop.ko': -1 Invalid module format." Can anyone help me with this?

[tr]

The problem I'm having now is when I go to boot the cd with qemu. It starts ok, but when it get to accessing the KNOPPIX cd, I get an "insmod: error inserting '/modules/cloop.ko': -1 Invalid module format." Can anyone help me with this?

This seems to be cloop module problem. Are you sure you copied cloop.ko from /lib/modules/kernel_version/extra to /modules inside minirt.gz? What Knoppix version are you using? Have you changed cloop.o to cloop.ko in linuxrc or renamed cloop.ko to cloop.o? I think old cloop.o format (2.4 kernel way) was used in Knoppix 4.0.2 and new module format (2.6 kernel) was renamed to it.


-tapsa-

[chowdah45416]

Hey, thanks. I already solved my problem though. At first I had forgot to make linux symlink in the minirt.gz file, but then I got an unkown symbol error with cloop. To solve this, I add a -O2 option inside the makefile for cloop.

[jimihieu]

Hey, thanks. I already solved my problem though. At first I had forgot to make linux symlink in the minirt.gz file, but then I got an unkown symbol error with cloop. To solve this, I add a -O2 option inside the makefile for cloop.

Hi chowdah45416,
I got exactly the same problems as yours.
Would you please show step by step how did you overcome it?
Really appreciate.

[willbrown]

I know this is from 2006 but ...

Trying to replace kernel in re-master enviroment and am getting the same probem.
Any help appreciated.

[sent]

Hi all

I am having a difficulty to pxe boot a KNOPPIX from Solaris grub.
I downloaded knoppix 6.2 and configured all , the client machine try to pxe boot but goes to shell with the following error:

14 914951 cloop disagrees about version of symbol module_layout
insmod: error inserting '/mnt-system/KNOPPIX/modules/cloop.ko': -1 Invalid module format." : Exec format error

couldnot mount /mnt-system/KNOPPIX/KNOPPIX
#

Any help appreciated.