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

[leo liang]

On Thu, Jun 14, 2012 at 11:16 AM, Autif Khan <autif.mlist at gmail.com> wrote:
> On Thu, Jun 14, 2012 at 10:49 AM, leo liang <leoliang9 at gmail.com> 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?

No, the foo.ko is existing module in the initrd image.

Thank you. I think I got the issue.

I should replace all the modules in the initrd.img with the new build.


>
>> 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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