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Fix nil pointer panic in verifyDisabledVFs for non-SR-IOV GPUs #1186

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Merged
k8s-ci-robot merged 1 commit into from
Jun 11, 2026
+8 −0
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Fix nil pointer panic in verifyDisabledVFs for non-SR-IOV GPUs #1186

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8 changes: 8 additions & 0 deletions cmd/gpu-kubelet-plugin/vfio-device.go
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Original file line number Diff line number Diff line change
Expand Up @@ -134,6 +134,14 @@ func (vm *VfioPciManager) verifyDisabledVFs(pciBusID string) error {
if err != nil {
return err
}
if gpu == nil {
return fmt.Errorf("no GPU found at PCI bus ID %q", pciBusID)
}
// PhysicalFunction is nil for GPUs that do not support SR-IOV (e.g. T400).
// A nil PhysicalFunction means no VFs can exist, so it is safe to proceed.
if gpu.SriovInfo.PhysicalFunction == nil {
return nil
}
numVFs := gpu.SriovInfo.PhysicalFunction.NumVFs
if numVFs > 0 {
return fmt.Errorf("gpu has %d VFs, cannot unbind", numVFs)
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