miner: prevent datarace, fixes ethereum#24299

holiman · Jan 27, 2022 · 5e3af9e · 5e3af9e
1 parent e282246
commit 5e3af9e
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/miner/worker.go b/miner/worker.go
@@ -726,7 +726,9 @@ func (w *worker) resultLoop() {
 				logs = append(logs, receipt.Logs...)
 			}
 			// Commit block and state to database.
+			w.snapshotMu.RLock()
 			_, err := w.chain.WriteBlockAndSetHead(block, receipts, logs, task.state, true)
+			w.snapshotMu.RUnlock()
 			if err != nil {
 				log.Error("Failed writing block to chain", "err", err)
 				continue