eth/downloader, les/downloader: fix subtle flaw in queue delivery (et…

…hereum#25861) * fix queue.deliver * les/downloader: fix queue.deliver Co-authored-by: Martin Holst Swende <[email protected]>
shekhirin · Jun 6, 2023 · 029f4ed · 029f4ed
1 parent 69895ea
commit 029f4ed
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Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/eth/downloader/queue.go b/eth/downloader/queue.go
@@ -857,7 +857,7 @@ func (q *queue) deliver(id string, taskPool map[common.Hash]*types.Header,
 	}
 
 	for _, header := range request.Headers[:i] {
-		if res, stale, err := q.resultCache.GetDeliverySlot(header.Number.Uint64()); err == nil {
+		if res, stale, err := q.resultCache.GetDeliverySlot(header.Number.Uint64()); err == nil && !stale {
 			reconstruct(accepted, res)
 		} else {
 			// else: between here and above, some other peer filled this result,

diff --git a/les/downloader/queue.go b/les/downloader/queue.go
@@ -870,7 +870,7 @@ func (q *queue) deliver(id string, taskPool map[common.Hash]*types.Header,
 	}
 
 	for _, header := range request.Headers[:i] {
-		if res, stale, err := q.resultCache.GetDeliverySlot(header.Number.Uint64()); err == nil {
+		if res, stale, err := q.resultCache.GetDeliverySlot(header.Number.Uint64()); err == nil && !stale {
 			reconstruct(accepted, res)
 		} else {
 			// else: between here and above, some other peer filled this result,