Kernel modules can't compile natively on Debian (DKMS, Fedora gcc)

[tasket]

Qubes OS version:

Affected TemplateVMs:

debian-8
debian-9

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Steps to reproduce the behavior:

Install a dkms module like:
apt-get install wireguard-dkms

Website:
https://www.wireguard.com/install/

Expected behavior:

Module compiles and installs

Actual behavior:

DKMS make.log for wireguard-0.0.20171017-1 for kernel 4.9.56-21.pvops.qubes.x86_64 (x86_64)
cc1: error: incompatible gcc/plugin versions
cc1: error: fail to initialize plugin ./scripts/gcc-plugins/latent_entropy_plugin.so

Make install fails.

General notes:

Debian template was built using a Fedora-supplied version of gcc and Debian does not have this version in either stable, testing, etc. Failure apparently caused by gcc version mis-match.

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Related issues:

[tasket]

I think I have an example of this happening on a Fedora template also, on R3.2 as reported by a twitter user. Appears to be a more general issue with maintaining template self-consistency.

[tasket]

I think I have an example of this happening on a Fedora template also, on R3.2 as reported by a twitter user. Appears to be a more general issue with maintaining template self-consistency.

[marmarek]

This is a duplicate of #2844
See discussion there. Generally it looks like the best option (if you want to customize anything kernel related) is to use the one installed inside template, not provided by dom0. For 3.2 see https://www.qubes-os.org/doc/managing-vm-kernel/#using-kernel-installed-in-the-vm, for 4.0 it is even simpler because bootloader is already installed, it require only:

qvm-prefs vmname kernel ''

[marmarek]

This is a duplicate of #2844
See discussion there. Generally it looks like the best option (if you want to customize anything kernel related) is to use the one installed inside template, not provided by dom0. For 3.2 see https://www.qubes-os.org/doc/managing-vm-kernel/#using-kernel-installed-in-the-vm, for 4.0 it is even simpler because bootloader is already installed, it require only:

qvm-prefs vmname kernel ''