From 0e6d628acdd692860b9e238e65ee2027c9e6f0ed Mon Sep 17 00:00:00 2001
From: ledgerwatch <akhounov@gmail.com>
Date: Fri, 11 Dec 2020 12:30:44 +0000
Subject: [PATCH] Fix deadlock (#1401)

Co-authored-by: Alexey Sharp <alexeysharp@Alexeys-iMac.local>
---
 consensus/ethash/consensus.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/consensus/ethash/consensus.go b/consensus/ethash/consensus.go
index a8692aaa9..97b92d5b1 100644
--- a/consensus/ethash/consensus.go
+++ b/consensus/ethash/consensus.go
@@ -146,7 +146,11 @@ func (ethash *Ethash) VerifyHeaders(chain consensus.ChainHeaderReader, headers [
 			defer wg.Done()
 			for index := range inputs {
 				errors[index] = ethash.verifyHeaderWorker(chain, headers, seals, index)
-				done <- index
+				select {
+				case done <- index:
+				case <-abort:
+					return
+				}
 			}
 		}()
 	}