core/txpool: check if initcode size is exceeded (ethereum#26504)

* core/txpool: check if initcode size is exceeded

* core/txpool: move check

Author: MariusVanDerWijden

core/txpool/txpool.go

@@ -18,6 +18,7 @@ package txpool
 
 import (
 	"errors"
+	"fmt"
 	"math"
 	"math/big"
 	"sort"
@@ -599,6 +600,10 @@ func (pool *TxPool) validateTx(tx *types.Transaction, local bool) error {
 	if tx.Size() > txMaxSize {
 		return ErrOversizedData
 	}
+	// Check whether the init code size has been exceeded.
+	if pool.shanghai && tx.To() == nil && len(tx.Data()) > params.MaxInitCodeSize {
+		return fmt.Errorf("%w: code size %v limit %v", core.ErrMaxInitCodeSizeExceeded, len(tx.Data()), params.MaxInitCodeSize)
+	}
 	// Transactions can't be negative. This may never happen using RLP decoded
 	// transactions but may occur if you create a transaction using the RPC.
 	if tx.Value().Sign() < 0 {