miner: fix state locking while writing to chain (issue #16933) (#17173)

2fbc4543 · ledgerwatch · Péter Szilágyi · d6efa691 · 2fbc4543
Commit 2fbc4543 authored Jul 31, 2018 by ledgerwatch Committed by Péter Szilágyi Jul 31, 2018
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worker.go miner/worker.go +2 -0

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--- a/miner/worker.go
+++ b/miner/worker.go
@@ -316,7 +316,9 @@ func (self *worker) wait() {
 			for _, log := range work.state.Logs() {
 				log.BlockHash = block.Hash()
 			}
+			self.currentMu.Lock()
 			stat, err := self.chain.WriteBlockWithState(block, work.receipts, work.state)
+			self.currentMu.Unlock()
 			if err != nil {
 				log.Error("Failed writing block to chain", "err", err)
 				continue