Thanks Buddy , the problem got solved . Btw , what is the difference between SMP and UP kernel Regards Gowri On Thu, 2006-05-18 at 14:57 +0800, Ed Greshko wrote: > Gowri wrote: > > Hi all , > > > > some time back i have installed FC4 and kernel-devel ( headers) , for > > building and loading kernel modules. > > > > Things were working fine , > > > > In recent days , i deleted the kernel-devel ( headers ) by mistake . > > > > i tried to install again kernel-devel headers using command "yum install > > kernel-devel-2.6.11 . > > it got installed but when i try to build and insert module , > > It is giving an error > > "invalid module format" > > > > I have verfied in /var/log/messages it is giving a message > > "disagrees about version of symbol struct_module " > > > > when i type uname -r its output is 2.6.11-1.1369_FC4smp. > > > > installed kernel-devel directory name is 2.6.11-1.1369_FC4-i686. > > > > > > How i can download the exact kernel-devel headers ? > > > > Any pointers will be helpfull. > > It appears you are running an SMP kernel but you loaded the devel > packages for the UP kernel. > > kernel-smp-devel > > I what you want > >