From fc800dcbc1ceabd4165315d404a1956366eee522 Mon Sep 17 00:00:00 2001
From: Roman Khimov <roman@nspcc.ru>
Date: Thu, 6 May 2021 21:53:34 +0300
Subject: [PATCH] stateroot: protect incomplete root manipulations in
 signAndSend

We're modifying it here, so there can be a race between this method and
AddSignature().
---
 pkg/services/stateroot/validators.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkg/services/stateroot/validators.go b/pkg/services/stateroot/validators.go
index ed0895ae0..819966db4 100644
--- a/pkg/services/stateroot/validators.go
+++ b/pkg/services/stateroot/validators.go
@@ -60,9 +60,11 @@ func (s *service) signAndSend(r *state.MPTRoot) error {
 
 	sig := acc.PrivateKey().SignHashable(uint32(s.Network), r)
 	incRoot := s.getIncompleteRoot(r.Index)
+	incRoot.Lock()
 	incRoot.root = r
 	incRoot.addSignature(acc.PrivateKey().PublicKey(), sig)
 	incRoot.reverify(s.Network)
+	incRoot.Unlock()
 
 	s.accMtx.RLock()
 	myIndex := s.myIndex