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alexreinert / piVCCU

piVCCU is a project to install the original Homematic CCU3 firmware inside a virtualized container (lxc) on ARM based single board computers.
Apache License 2.0
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pivccu-modules-dkms incorrectly builds x86 modules on 64bit systems #468

Closed derreisende77 closed 1 year ago

derreisende77 commented 1 year ago

On my Ubuntu Ubuntu 22.04.1 LTS 64bit machine sudo apt install pivccu-modules-dkms successfully builds kernel modules with ARCH=x86, which are unusable by the kernel. I am unable to use a HmIP-RFUSB dongle. Trying to load a module causes following error:

sudo modprobe eq3_char_loop
modprobe: ERROR: could not insert 'eq3_char_loop': Exec format error

dmesg shows the following error:

module: x86/modules: Skipping invalid relocation target, existing value is nonzero for type 1, loc 00000000a65c8f9b, val ffffffffc0fcb91d

uname output:

Linux thinkpad-ubuntu 5.15.0-57-generic #63-Ubuntu SMP Thu Nov 24 13:43:17 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

Is there a way to build 64bit kernel modules which can be loaded?

derreisende77 commented 1 year ago

Added more detailed error description

alexreinert commented 1 year ago

This is not an issue with 64 bit, it is an issue with invalid installed headers by the Ubuntu installer (module signing enabled in headers, but not in kernel itself) Reinstall the kernel headers and reinstall the pivccu-modules-package afterwards.

derreisende77 commented 1 year ago

Reinstalled all headers and the modules package. Now everything works as expected. Thank you very much! Maybe this should be documented here for other user who might run into this problem?