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eth: fix targetView==nil case (#33810)

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This PR fixes a panic in a corner case situation when a `ChainEvent` is
received by `eth.Ethereum.updateFilterMapsHeads()` but the given chain
section does not exist in `BlockChain` any more. This can happen during
chain rewind because chain events are processed asynchronously. Ignoring
the event in this case is ok, the final event will point to the final
rewound head and the indexer will be updated.
Note that similar issues will not happen once we transition to
https://github.com/ethereum/go-ethereum/pull/32292 and the new indexer
built on top of this. Until then, the current fix should be fine.
This commit is contained in:
Felföldi Zsolt 2026-02-10 14:15:18 +01:00 committed by GitHub
parent bbb1ab8d16
commit 986d115da7
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3
eth/backend.go
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@ -495,6 +495,9 @@ func (s *Ethereum) updateFilterMapsHeads() {
if head == nil || newHead.Hash() != head.Hash() {
head = newHead
chainView := s.newChainView(head)
if chainView == nil {
return
}
historyCutoff, _ := s.blockchain.HistoryPruningCutoff()
var finalBlock uint64
if fb := s.blockchain.CurrentFinalBlock(); fb != nil {