No current kernel folder and insmod error invalid module format in/usr/src/kernels/

I encountered a problem when loading the device driver.

$ sudo insmod Dev_hello.ko

Then there is a problem:
Error: could not insert module Dev_hello.ko: Invalid module format

Check the *. Ko file vermagic and kernel version number:
[lgw@localhost shareArm]$ sudo modinfo Dev_hello.ko [sudo] password for lgw: filename: /home/lgw/shareArm/Dev_hello.ko depends: vermagic: 3.5.0-2.fc17.i686 SMP mod_unload 686
 

  
  

   
   
 
    
lgw@localhost shareArm]$ uname -r 3.5.0-2.fc17.i686.PAE
 
    

 
   
  
  
Then you can find the command CAT/var/log/message | tail on the Internet to view the log file error information.
Related part:
Aug 10 14:24:29 localhost kernel: [14410.773882] Dev_hello: version magic '3.5.0-2.fc17.i686 SMP mod_unload 686 ' should be '3.5.0-2.fc17.i686.PAE SMP mod_unload 686 ' 

========================================================== = Kernel problems ========================================
 
Then I will check if my kernel root directory is/usr/src/kernels/
There is only the 3.5.0-2. fc17.i686 folder, but my kernel version is PAE, but this option is not available.
The/lib/modules used in makefile contains three folders: 3.3.4-5. fc17.i686 3.5.0-2. fc17.i686 3.5.0-2. fc17.i686. PAE.

The related sentences in makefile are:
KERNEL_DIR := /lib/modules/$(shell uname -r)/build PWD := $(shell pwd) all: make -C $(KERNEL_DIR) M=$(PWD) modules
The result is a command: Make-C/lib/modules/3.5.0-2. fc17.i686. PAE/build M =/home/LGW/arm modules
The soft link of this build is linked to/usr/src/kernels/3.5.0-2. fc17.i686. PAE, but this link does not exist, so I changed this link to the folder without Pae. As a result, makefile can be made successfully, but insmod always reports an error. (I am so cool ~~~ After all, I tried every day to find methods and methods. At least I finally found a solution! Or Google is quite powerful. I 'd like to see it in various English forums)

========================================================== ==========================================
================================ Solution ========== ====================================
========================================================== ==========================================

sudo yum isntall kernel-PAE-devel


Then, the 3.5.0-2. fc17.i686. PAE folder appears in the/usr/src/kernels/folder.
Thank you for replying to my http://topic.csdn.net/u/20120810/14/a350bd84-ff57-4a44-bb88-1960fe5f21c3.html? Seed = 1160754062 & R = 79376733 # r_79376733 two friends in this post!

Let's get a picture of the loaded driver!
(The figure shows that the path to the folder is PAE ~)
(After loading, $Dmesg)
(After uninstalling, $Dmesg)

Refer:
 
Fedoraforum.org


   
   

    
    
 
     
 
      
 17th
2017l 2010, PM
 
     
 
     
 
      
 
       
 
        
 
         
 
          
Smr54OnlineRegistered User
 
          
 
 
          
Join Date: Jan 2010 posts: 4,055
 
         
 
        
 
       
 
     
 
     
 
      
Re: No kernel source files in/usr/src/kernels/directory Hrrm, looking at the fedora link cschwangler provided, it seems to me that they're making a very simple thing more complex than it is, as well as not even giving the necessary information.
If you have the i686 kernel, chances are that it runs the PAE kernel by default. rather than using the vanilla kernel, you're usually better off, when using fedora, to use its own kernel packages.
Do
Uname-R
If it has the letters PAE in it, then do
Yum install kernel-PAE-devel
Actually, probably better off doing Yum update Linux-kernel, and if a later kernel is available, reboot into it, then do Yum isntall kernel-PAE-devel, to make sure that there are no version mismatches. (I 'd also remove the links you 've ve already created to avoid
Conflicts .)
Then you're done, almost no muss, fuss, or bother.