Avoid panic during startup with 1.10.2 (#26219)

* fix: initalize the topology of teh processors to avoid nil pointers

* func: initialize topology to avoid nil pointers

* fix: update the new public method for NodeProcessorResources

client/client.go

@@ -1569,6 +1569,12 @@ func (c *Client) setupNode() error {
 		node.NodeResources.MinDynamicPort = newConfig.MinDynamicPort
 		node.NodeResources.MaxDynamicPort = newConfig.MaxDynamicPort
 		node.NodeResources.Processors = newConfig.Node.NodeResources.Processors
+
+		if node.NodeResources.Processors.Empty() {
+			node.NodeResources.Processors = structs.NodeProcessorResources{
+				Topology: &numalib.Topology{},
+			}
+		}
 	}
 	if node.ReservedResources == nil {
 		node.ReservedResources = &structs.NodeReservedResources{}

client/lib/numalib/detect.go

@@ -18,7 +18,7 @@ type SystemScanner interface {
 // a single Topology, which can then be used to answer questions about the CPU
 // topology of the system.
 func Scan(scanners []SystemScanner) *Topology {
-	top := new(Topology)
+	top := &Topology{}
 	for _, scanner := range scanners {
 		scanner.ScanSystem(top)
 	}