After istalliing the SR-IOV Network Operator, if a node has a Mellanox SR-IOV NIC, the SriovNetworkNodeState goes to Failed status. sriov-netowkr-config-daemon logs
contains the error:

2024-03-13T12:41:07.158337613Z	INFO	daemon/daemon.go:546	mellanox plugin OnNodeStateChange()

2024-03-13T12:41:07.158367088Z	INFO	kernel/kernel.go:582	RunCommand()	{"command": "/bin/sh", "args": ["-c", "cat", "/host/sys/kernel/security/lockdown"]}
2024-03-13T12:41:07.164472541Z	LEVEL(-2)	kernel/kernel.go:582	RunCommand()	{"output": "", "error": null}
2024-03-13T12:41:07.164512706Z	LEVEL(-2)	mellanox/mellanox_plugin.go:82	IsKernelLockdownMode()	{"output": "", "error": null}
2024-03-13T12:41:07.164585388Z	INFO	mellanox/mellanox_plugin.go:156	mellanox-plugin getMlnxNicFwData()	{"device": "0000:d8:00.0"}
2024-03-13T12:41:07.164611158Z	INFO	mellanox/mellanox.go:180	MstConfigReadData()	{"device": "0000:d8:00.0"}
2024-03-13T12:41:07.164626797Z	INFO	mellanox/mellanox.go:78	RunCommand()	{"command": "mstconfig", "args": ["-e", "-d", "0000:d8:00.0", "q"]}
2024-03-13T12:41:07.177660098Z	LEVEL(-2)	mellanox/mellanox.go:78	RunCommand()	{"output": "-E- Failed to open the device\n", "error": "exit status 3"}

    

100%
    

    1. Provision a 4.16 cluster with at least one node with Mellanox NICs and SecureBoot enabled 
    2. Deploy the SR-IOV network operator
    3. run `oc get -n openshift-sriov-network-operator sriovnetworknodestate`
    

worker has SYNC STATUS == Failed
    

all workers have SYNC STATUS == Succeeded
    

Mellanox NICs need SecureBoot disabled to work correctly, but the operator should raise an error if and only if the user tries to configure the NIC.
https://access.redhat.com/solutions/6643261