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les: fix serverHandler crash after setHead (#24200)

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Martin Holst Swende 2022-01-05 16:40:45 +01:00 committed by GitHub
parent 3ccd6b6dbb
commit 335914a63a
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1 changed files with 4 additions and 1 deletions
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5
les/server_handler.go
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@ -421,7 +421,10 @@ func (h *serverHandler) broadcastLoop() {
}
var reorg uint64
if lastHead != nil {
reorg = lastHead.Number.Uint64() - rawdb.FindCommonAncestor(h.chainDb, header, lastHead).Number.Uint64()
// If a setHead has been performed, the common ancestor can be nil.
if ancestor := rawdb.FindCommonAncestor(h.chainDb, header, lastHead); ancestor != nil {
reorg = lastHead.Number.Uint64() - ancestor.Number.Uint64()
}
}
lastHead, lastTd = header, td
log.Debug("Announcing block to peers", "number", number, "hash", hash, "td", td, "reorg", reorg)