added lock to originStorage, pendingStorage and dirtyStorage in GetCo…

…mmittedState function to fix 'concurrent map writes'

core/state/state_object.go

@@ -21,6 +21,7 @@ import (
 	"fmt"
 	"io"
 	"math/big"
+	"sync"
 	"time"
 
 	"github.com/ethereum/go-ethereum/common"
@@ -73,6 +74,7 @@ type stateObject struct {
 	trie Trie // storage trie, which becomes non-nil on first access
 	code Code // contract bytecode, which gets set when code is loaded
 
+	storageMutex   sync.Mutex
 	originStorage  Storage // Storage cache of original entries to dedup rewrites
 	pendingStorage Storage // Storage entries that need to be flushed to disk, at the end of an entire block
 	dirtyStorage   Storage // Storage entries that have been modified in the current transaction execution, reset for every transaction
@@ -175,6 +177,8 @@ func (s *stateObject) GetState(key common.Hash) common.Hash {
 
 // GetCommittedState retrieves a value from the committed account storage trie.
 func (s *stateObject) GetCommittedState(key common.Hash) common.Hash {
+	s.storageMutex.Lock()
+	defer s.storageMutex.Unlock()
 	// If we have a pending write or clean cached, return that
 	if value, pending := s.pendingStorage[key]; pending {
 		return value
@@ -183,6 +187,7 @@ func (s *stateObject) GetCommittedState(key common.Hash) common.Hash {
 	if value, cached := s.originStorage[key]; cached {
 		return value
 	}
+
 	// If the object was destructed in *this* block (and potentially resurrected),
 	// the storage has been cleared out, and we should *not* consult the previous
 	// database about any storage values. The only possible alternatives are: