[Question] a question about the device driver

[Doubt] for a question about the device driver-Linux general technology-Linux technology and application information, see the following for details. [I = s] This post was last edited by xihu_wy

I recently started to access linux Device Drivers and encountered the following problems in my first hello world example:

Insmod: error inserting './hello. ko':-1 Invalid module format

Find/var/log/messages and find it Nov 16 14:24:35 qian kernel: hello: version magic '2. 6.34.7-61. fc13.i686 SMP mod_unload 686 'should be '2. 6.33.3-85. fc13.i686 SMP mod_unload 686'

However, after I uninstalled 2.6.34.7-61. fc13.i686 and installed the downloaded 'kernel-2.6.33.3-85. fc13.src. rpm, there were no files in the usr/src/kernels directory.
I don't know why... Please kindly advise