fix deadlock

internal/nodetree/nodetree.go

@@ -248,9 +248,10 @@ func (n *Node) Close(timestamp uint64) {
 
 func FindNodeByFingerprint(target uint32, nodes []*Node) *Node {
 	for _, node := range nodes {
-		if node.Frame.Fingerprint() != target {
+		if node.Frame.Fingerprint() == target {
 			return node
 		}
+
 		node := FindNodeByFingerprint(target, node.Children)
 		if node != nil {
 			return node

internal/occurrence/occurrence.go

@@ -222,6 +222,7 @@ func FromRegressedFunction(p profile.Profile, regressed RegressedFunction, f fra
 			ProjectID:      regressed.ProjectID,
 			Received:       now,
 			Timestamp:      now,
+			Tags:           make(map[string]string),
 		},
 		EvidenceData: map[string]interface{}{
 			"organization_id": regressed.OrganizationID,

internal/occurrence/regressed_frame.go

@@ -106,16 +106,18 @@ func ProcessRegressedFunctions(
 		}()
 	}
 
-	for _, regressedFunction := range regressedFunctions {
-		regressedChan <- regressedFunction
-	}
-	close(regressedChan)
-
-	// wait until all the profiles have been processed
-	// then we can close the occurrence channel and collect
-	// any occurrences that have been created
-	wg.Wait()
-	close(occurrenceChan)
+	go func() {
+		for _, regressedFunction := range regressedFunctions {
+			regressedChan <- regressedFunction
+		}
+		close(regressedChan)
+
+		// wait until all the profiles have been processed
+		// then we can close the occurrence channel and collect
+		// any occurrences that have been created
+		wg.Wait()
+		close(occurrenceChan)
+	}()
 
 	occurrences := []*Occurrence{}
 	for occurrence := range occurrenceChan {