Re: For a bug in lib/vsprintf.c where should a patch be sent to ?

[Santosh Sivaraj]

William Tambe  writes:

> On Sun, Jul 5, 2020 at 8:40 PM William Tambe  wrote:
>>
>> For a bug in lib/vsprintf.c where should a patch be sent to ?
>
> The bug is in kernel/kallsyms.c instead.
>
> So for a bug in kernel/kallsyms.c, where should a patch be sent to ?
>

You can use the 'get_maintainer.pl' script in the kernel tree to identify the
list and maintainers.

./scripts/get_maintainer.pl kernel/kallsyms.c


But in general you can send it to linux-ker...@vger.kernel.org.

Thanks,
Santosh

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Re: Kernel Compiling Issue

[Santosh Sivaraj]

* Herb Garcia  wrote (on 2017-08-29 03:52:07 +):

> I recently learned how to compile the kernel on my Debian PC. What I'm running
> into is the default kernel runs well with no issues. With that said, when I
> will run menu oldconfig. To keep the current settings. When Alall said and
> done. When I reboot my PC. I get this error: failed to. Start load/save screen
> backlight brightness
Backlight driver is generally a module, not builtin. So modules should be
installed too. Is that done?

Thanks,
Santosh
> 
> Any suggestions appreciated
> 
> ~H.P. Garcia
> 
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Re: Error message not relevant

[Santosh Sivaraj]

* Nav Kamal navkama...@gmail.com wrote (on 2013-11-20 16:43:26 +):

 Am learning to write LKMs and wrote this program :
 
 #includelinux/init.h
 #includelinux/module.h
 static int module_entry(void){
 printk(KERN_ALERT Hello World !!\n);
 return 0;
 }
 static void exit_module(void){
 printk(KERN_ALERT Bye World  \n);
 }
 module_init(module_entry);
 module_exit(exit_module);
 
 In this program if I change return value of function module_entry from 0 to
 something negative, the module fails to load. The error message is :

What was the exact value? Must be you returned -1, as an example try to pass
some other lower negative numbers. It converts to error string using err or
perror. So you get that permission denied for the value you passed.


 
 insmod: ERROR: could not insert module test.ko: Operation not permitted
 
 Failing to load module with negative return value is understandable but I
 can't understand why it says Operation not permitted. Its not about user
 permissions, its about return value. Can somebody please guide me about
 this ?

Santosh
-- 
When you really want something (and take the first steps in that direction), the
entire universe will conspire to fulfill your desire. -- P. Coelho

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