40794132708
37%
main: 37%

Ran 29 Oct 2026 12:35AM UTC

Jobs 1

Files 127

Run time 1min

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Committed 29 Oct 2026 12:26AM UTC coverage: 37.048%. Remained the same

Build # 40794132708

Build Type

Pull #3136

github

Committed by

tariq1890

Commit Message

check that busybox does not prefer applets

Add scripts/check-busybox-prefer-applets.sh, which verifies that the
busybox binary in an image was not built with
CONFIG_FEATURE_PREFER_APPLETS=y.

With PREFER_APPLETS=y, busybox re-execs itself via /proc/self/exe when a
command name matches a built-in applet, instead of searching PATH. This
means `chroot <hostRoot> modprobe <module>` (KernelModules.Load in
internal/linuxutils) runs the busybox modprobe applet rather than the
host's kmod modprobe. The applet does not implement softdeps, so
vfio_iommu_type1 (a softdep of vfio) is never loaded and KubeVirt VMs
with GPU passthrough fail to boot.

busybox does not embed its build config, so the script checks behavior:
with a fake modprobe first on PATH, `busybox chroot / modprobe` must run
the fake rather than the applet.

Signed-off-by: Tariq Ibrahim <tibrahim@nvidia.com>

Pull Request Pull Request #3136: build: use the official busybox-musl image

Coverage Stats

5998 of 16190 relevant lines covered (37.05%)

0.37 hits per line

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ID	Job ID	Ran	Files	Coverage
1	40794132708.1	29 Oct 2026 12:35AM UTC	127	37.05	GitHub Action Run

NVIDIA / gpu-operator / 40794132708
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