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Fix descent from split check (#7105)

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This commit is contained in:
Michael Sproul
2025-03-11 16:14:58 +11:00
committed by GitHub
parent 9bb0e1377a
commit 3645d57099
1 changed files with 10 additions and 3 deletions
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13
beacon_node/beacon_chain/src/block_verification.rs
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@@ -1783,10 +1783,17 @@ pub fn check_block_is_finalized_checkpoint_or_descendant<
block: B,
) -> Result<B, BlockError> {
// If we have a split block newer than finalization then we also ban blocks which are not
// descended from that split block.
// descended from that split block. It's important not to try checking `is_descendant` if
// finality is ahead of the split and the split block has been pruned, as `is_descendant` will
// return `false` in this case.
let finalized_slot = fork_choice
.finalized_checkpoint()
.epoch
.start_slot(T::EthSpec::slots_per_epoch());
let split = chain.store.get_split_info();
let is_descendant_from_split_block =
split.slot == 0 || fork_choice.is_descendant(split.block_root, block.parent_root());
let is_descendant_from_split_block = split.slot == 0
|| split.slot <= finalized_slot
|| fork_choice.is_descendant(split.block_root, block.parent_root());
if fork_choice.is_finalized_checkpoint_or_descendant(block.parent_root())
&& is_descendant_from_split_block