les/vflux: fixed panic and data races (#23865)

* les/vflux/server: fix BalanceOperation * les/vflux/client: fixed data races
2021-11-08 10:29:59 +01:00
parent 476fb565ce
commit 8be8ba450e
3 changed files with 23 additions and 12 deletions
--- a/les/vflux/server/balance_tracker.go
+++ b/les/vflux/server/balance_tracker.go
@@ -223,8 +223,9 @@ func (bt *balanceTracker) BalanceOperation(id enode.ID, connAddress string, cb f
 		var nb *nodeBalance
 		if node := bt.ns.GetNode(id); node != nil {
 			nb, _ = bt.ns.GetField(node, bt.setup.balanceField).(*nodeBalance)
-		} else {
-			node = enode.SignNull(&enr.Record{}, id)
+		}
+		if nb == nil {
+			node := enode.SignNull(&enr.Record{}, id)
 			nb = bt.newNodeBalance(node, connAddress, false)
 		}
 		cb(nb)