insmod error

[Madhu K]

Hi Aruna,

Thank you so much for your information,

Thanks,
Madhu

On Sat, Feb 11, 2017 at 9:15 PM, Aruna Hewapathirane <
aruna.hewapathirane at gmail.com> wrote:

> <snip>
> >> Please help me out to understand below message mean.
>
> >> ubuntu at ubuntu-armhf:/home/Madhu/i2c$ dmesg
> >> [  704.283100] i2c_client: loading out-of-tree module taints kernel.
> >> [  704.285359] driver initialization
> >> [  704.285693] inside probe function
>
> What you should pay attention to more than worry about the out-of-tree
> module is the text immediately following that. Says "taints kernel" right ?
> What exactly that means is if you have problems later on with this kernel
> and require debugging or community support to identify then resolve a bug
> there will be no community support.
>
> When the kernel is tainted, it means that *it is in a state that is not
> supported by the community*. Most kernel developers will ignore bug
> reports involving tainted kernels, and community members may ask that you
> correct the tainting condition before they can proceed with diagnosing
> problems related to the kernel. In addition, some debugging functionality
> and API calls may be disabled when the kernel is tainted.
> [ reference: http://unix.stackexchange.com/questions/118116/linux-what-
> is-a-tainted-kernel ]
>
> The primary reason for the *‘Tainted: ‘* string is to tell kernel
> debuggers if this is a clean kernel or if anything unusual has occurred.
> Tainting is permanent: even if an offending module is unloaded, the
> tainted value remains to indicate that the kernel is not trustworthy.
> [ reference: https://www.kernel.org/doc/html/latest/admin-guide/
> tainted-kernels.html?highlight=tainted ]
>
> Looking at your dmesg output you posted your module initialized ok and
> your probe was called ok but if shit happens down the road your on your
> own. Meaning if you ask for help most folks will ask you to fix the taint
> issue before taking a look at your code :)
>
> Hope this helps - Aruna
>
>
>>
>> Regards,
>> Madhu
>>
>> _______________________________________________
>> Kernelnewbies mailing list
>> Kernelnewbies at kernelnewbies.org
>> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20170211/01924014/attachment-0001.html