eth/downloader: fix rollback issue on short chains

9f7b79af · Martin Holst Swende · a70a79b2 · 9f7b79af
Unverified Commit 9f7b79af authored Aug 21, 2020 by Martin Holst Swende
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downloader.go eth/downloader/downloader.go +2 -0

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--- a/eth/downloader/downloader.go
+++ b/eth/downloader/downloader.go
@@ -1502,6 +1502,8 @@ func (d *Downloader) processHeaders(origin uint64, pivot uint64, td *big.Int) er
 					head := chunk[len(chunk)-1].Number.Uint64()
 					if head-rollback > uint64(fsHeaderSafetyNet) {
 						rollback = head - uint64(fsHeaderSafetyNet)
+					} else {
+						rollback = 1
 					}
 				}
 				// Unless we're doing light chains, schedule the headers for associated content retrieval