core, miner: avoid miscaching while getting sender from tx

core/types/transaction.go

@@ -381,28 +381,32 @@ func (s *TxByPrice) Pop() interface{} {
 // transactions in a profit-maximising sorted order, while supporting removing
 // entire batches of transactions for non-executable accounts.
 type TransactionsByPriceAndNonce struct {
-	txs   map[common.Address]Transactions // Per account nonce-sorted list of transactions
-	heads TxByPrice                       // Next transaction for each unique account (price heap)
+	txs    map[common.Address]Transactions // Per account nonce-sorted list of transactions
+	heads  TxByPrice                       // Next transaction for each unique account (price heap)
+	signer Signer                          // Signer for the set of transactions
 }
 
 // NewTransactionsByPriceAndNonce creates a transaction set that can retrieve
 // price sorted transactions in a nonce-honouring way.
 //
 // Note, the input map is reowned so the caller should not interact any more with
-// if after providng it to the constructor.
-func NewTransactionsByPriceAndNonce(txs map[common.Address]Transactions) *TransactionsByPriceAndNonce {
+// if after providing it to the constructor.
+func NewTransactionsByPriceAndNonce(signer Signer, txs map[common.Address]Transactions) *TransactionsByPriceAndNonce {
 	// Initialize a price based heap with the head transactions
 	heads := make(TxByPrice, 0, len(txs))
-	for acc, accTxs := range txs {
+	for _, accTxs := range txs {
 		heads = append(heads, accTxs[0])
+		// Ensure the sender address is from the signer
+		acc, _ := Sender(signer, accTxs[0])
 		txs[acc] = accTxs[1:]
 	}
 	heap.Init(&heads)
 
 	// Assemble and return the transaction set
 	return &TransactionsByPriceAndNonce{
-		txs:   txs,
-		heads: heads,
+		txs:    txs,
+		heads:  heads,
+		signer: signer,
 	}
 }
 
@@ -416,9 +420,7 @@ func (t *TransactionsByPriceAndNonce) Peek() *Transaction {
 
 // Shift replaces the current best head with the next one from the same account.
 func (t *TransactionsByPriceAndNonce) Shift() {
-	signer := deriveSigner(t.heads[0].data.V)
-	// derive signer but don't cache.
-	acc, _ := Sender(signer, t.heads[0]) // we only sort valid txs so this cannot fail
+	acc, _ := Sender(t.signer, t.heads[0])
 	if txs, ok := t.txs[acc]; ok && len(txs) > 0 {
 		t.heads[0], t.txs[acc] = txs[0], txs[1:]
 		heap.Fix(&t.heads, 0)

core/types/transaction_test.go

@@ -143,7 +143,7 @@ func TestTransactionPriceNonceSort(t *testing.T) {
 		}
 	}
 	// Sort the transactions and cross check the nonce ordering
-	txset := NewTransactionsByPriceAndNonce(groups)
+	txset := NewTransactionsByPriceAndNonce(signer, groups)
 
 	txs := Transactions{}
 	for {

miner/worker.go

@@ -246,7 +246,7 @@ func (self *worker) update() {
 
 				acc, _ := types.Sender(self.current.signer, ev.Tx)
 				txs := map[common.Address]types.Transactions{acc: {ev.Tx}}
-				txset := types.NewTransactionsByPriceAndNonce(txs)
+				txset := types.NewTransactionsByPriceAndNonce(self.current.signer, txs)
 
 				self.current.commitTransactions(self.mux, txset, self.chain, self.coinbase)
 				self.currentMu.Unlock()
@@ -443,7 +443,7 @@ func (self *worker) commitNewWork() {
 		log.Error("Failed to fetch pending transactions", "err", err)
 		return
 	}
-	txs := types.NewTransactionsByPriceAndNonce(pending)
+	txs := types.NewTransactionsByPriceAndNonce(self.current.signer, pending)
 	work.commitTransactions(self.mux, txs, self.chain, self.coinbase)
 
 	self.eth.TxPool().RemoveBatch(work.failedTxs)