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-rw-r--r--les/fetcher.go3
1 files changed, 3 insertions, 0 deletions
diff --git a/les/fetcher.go b/les/fetcher.go
index 3fc4df30b..9d224176f 100644
--- a/les/fetcher.go
+++ b/les/fetcher.go
@@ -425,6 +425,9 @@ func (f *lightFetcher) nextRequest() (*distReq, uint64) {
},
canSend: func(dp distPeer) bool {
p := dp.(*peer)
+ f.lock.Lock()
+ defer f.lock.Unlock()
+
fp := f.peers[p]
return fp != nil && fp.nodeByHash[bestHash] != nil
},