Problem loading out-of-tree module

BWO · 06-27-2022, 01:11 AM

I'm trying to load an out-of-tree module, exactly the same way I was doing it on past kernels with success. But with 5.15.27, it longer works:

Code:

$ insmod /lib/modules/5.15.27custom/extra/mymodule.ko
insmod: ERROR: could not insert module /lib/modules/5.15.27custom/extra/mymodule.ko: Invalid parameters

dmesg says:

Code:

[61204.361171] mymodule: loading out-of-tree module taints kernel.
[61204.361232] mymodule: module verification failed: signature and/or required key missing - tainting kernel
[61204.361302] mymodule: disagrees about version of symbol __stack_chk_fail
[61204.361326] mymodule: Unknown symbol __stack_chk_fail (err -22)

CONFIG_STACKPROTECTOR and CONFIG_STACKPROTECTOR_STRONG are set in .config, if that matters.
Can anyone help me on how to make that module loadable (or rebuild so it can be loaded)?

Thanks in advance!

pan64 · 06-27-2022, 01:24 AM

That is extremely hard from here. We know nothing about that "mymodule.ko". Most probably it is not compatible with that kernel. It was not built for it or build failed or who knows?
Would be nice to tell us exactly what is it, how it was built? Also you may need to check the kernel changelog (if it worked with a previous kernel).