On Mon, Aug 5, 2019 at 6:46 AM Alessandro Baggi <alessandro.baggi at gmail.com> wrote: > > Hey there, > I'm trying to compile a single module following this guide: > > https://wiki.centos.org/HowTos/BuildingKernelModules#head-d2e4c05886f94c701e4ae74387d41d8c40c25d01 > > and > > https://wiki.centos.org/HowTos/I_need_the_Kernel_Source > > I tried to compile a module for novuton led controller supplied by > thirdparty and I got several error. > > To check if this is the wrong procedure I tried to compile cifs module > as listed in howto but when loading with modprobe I get "Exec format > error", and from dmesg "cifs: no symbol version for module_layout > ", the same errors when compiling novuton module and I don't know why I > get this error. When following the instructions in BuildingKernelModules, which kernel version did you use? Also, after the "depmod -a" step, what is the output from: $ modinfo cifs | grep filename > I noticed that modules in centos are compressed in .xz but after running > make M=fs/cifs I got only a .ko kernel module and then I run xz to > compress the new module. Compressing modules is optional. Uncompressed form is functionally the same (of course it saves some disk space). > Can someone help me please? > > Thanks in advance. Akemi