Missing kernel module netdevsim

[thediveo]

Description

The netdevsim kernel module simulates network devices. In contrast to the so-called dummy kind network interfaces, netdevsims are actually virtual devices and not just network interfaces. Kernel netdevsim goes back a long time, before 5.0 IIRC. netdevsim allows testing network interface testing with multiple queues, tc/XDP BPF and limited SR-IOV API aspects, but also PTP devices, without the need for a real physical HW NIC. netdevsims support aspects, dummy network interfaces do not.

In order to run tests relying on netdevsim being available and loadable, please consider adding the following kernel modules to Github runners:

• netdevsim
• ptp_mock
• psample

Platforms affected

• Azure DevOps
• GitHub Actions - Standard Runners
• GitHub Actions - Larger Runners

Runner images affected

• Ubuntu 20.04
• Ubuntu 22.04
• Ubuntu 24.04
• macOS 11
• macOS 12
• macOS 13
• macOS 13 Arm64
• macOS 14
• macOS 14 Arm64
• Windows Server 2019
• Windows Server 2022

Image version and build link

Runner Image
Image: ubuntu-22.04
Version: 20240624.1.0
Included Software: https://github.com/actions/runner-images/blob/ubuntu22/20240624.1/images/ubuntu/Ubuntu2204-Readme.md
Image Release: https://github.com/actions/runner-images/releases/tag/ubuntu22%2F20240624.1

Is it regression?

no

Expected behavior

modprobe netdevsim succeeds

Actual behavior

modprobe: FATAL: Module netdevsim not found in directory /lib/modules/6.5.0-1022-azure

Repro steps

Have a Github action step:

      - name: netdevsim kmodule
        run: sudo modprobe netdevsim

[ijunaidm]

Hi @thediveo, Thank you for bringing this issue to us, we are investigating on this issue and will update you after our findings.