initrd insmod: error inserting '/lib/foo.ko' : -1 operation not permitted

Autif Khan autif.mlist at
Thu Jun 14 11:16:57 EDT 2012

On Thu, Jun 14, 2012 at 10:49 AM, leo liang <leoliang9 at> wrote:
> Hi,
> I am trying to add one driver to my kernel.
> I have the kernel source and use make all build all the modules and bzImage.
> I already have initrd.img in my machine. I extract it to a tmp folder.

Are bzImage that you compiled and foo.ko from the initrd.img compiled
at the same time from the same source?

> Then I copy the driver module into the lib folder. I edited the init
> file to insert the module when machine boot. After that, I recreated
> the initrd.img by cpio and gzip.
> When machine boot,  I got "insmod: error inserting '/lib/foo.ko' : -1
> operation not permitted" error.
> Did I missed any step? What caused the error?
> Thanks.
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