Rick, first a question, then hopefully a solution. Is the version of cpint higher/newer than the one on linuxvm.org, 2.5.3? If so, I'll have to bug Neale about sending me the software, or putting it up on Sine Nomine's site so I can point to it.
I was able to reproduce your problem on the git390 system at Marist. I discovered that I needed to have matching levels of kernel-s390x, kernel-source, and kernel-syms packages. Make sure /usr/src/linux-obj points to the correct /usr/src/linux-2.6.5-#.###-obj directory. Once I did that, either make -C /lib/modules/`uname -r`/build M=`pwd` Or make -C /usr/src/linux-obj/s390/s390x M=$(pwd) Worked for me. I noticed one oddity. When I insmodded the new module, this showed up in the kernel ring buffer: cpint_mod: disagrees about version of symbol struct_module Not sure if I should be worried about it or not. The hcp command still seems to work anyway. As a note, the ELF magic for the newly-built module (either the one that didn't work, or the one that did) matched what was in the module shipped by Novell. The only difference I could see was around offset 050+, and it looked like the version number, 230 versus 250. (I did an "od -c" command on both of them and diffed the output.) Mark Post -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Rick Troth Sent: Sunday, June 11, 2006 1:04 AM To: [email protected] Subject: trouble building a kernel module I'm having trouble building a new CPINT on SLES9 (SP3) and I wonder if someone else has seen these symptoms. Maybe someone can tell me what I'm doing wrong. It builds cleanly, but refuses to load. (64-bit) DETAILS We needed to upgrade CPINT (that story is for another note) so I got the latest and greatest source from Dr. Ferguson. It built just fine, but when I tried to 'insmod', I got insmod: error inserting './cpint_mod.ko': -1 Invalid module format I thought maybe I needed to play EXPLICITLY by the rules, so I dropped it into /lib/modules, ran 'depmod' and then 'modprobe', and got FATAL: Error inserting cpint (/lib/modules/2.6.5-7.191-s390x/extra/cpint.ko): Invalid module format I called Neale, he considered what we were going through and suggested making sure that the support level might be mis-matched (between the kernel and 'insmod' and friends). Sure enough, we had the SP2 modutils, but this is an SP3 kernel. So I upgraded modutils ... but got the same problem. Finally, running 'strace' against an explicity 'insmod' shows # strace insmod ./cpint_mod.ko init_module("^?ELF^B^B^A", 0x8edb7) = -1 ENOEXEC (Exec format error) The ELF magic looks ugly, but I don't really know if it is out of whack or if that is how it's supposed to look. I did have to wrangle the kernel source into a state where I could build kernel modules. But that's not surprising. And I have now re-done 'make config' and 'make modules' numerous times. (But it occurs to me as I send this note that I am NOT running a home-built kernel.) -- R; ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
