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core: validate chain before writing block (#1319)

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Manav Darji 2024-11-18 14:18:04 +07:00 committed by GitHub
parent 4c4185c9ae
commit ee5318b07b
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1 changed files with 14 additions and 0 deletions
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14
core/blockchain.go
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@ -2374,6 +2374,20 @@ func (bc *BlockChain) insertChain(chain types.Blocks, setHead bool) (int, error)
status WriteStatus
)
// Before the actual db insertion happens, verify the block against the whitelisted
// milestone and checkpoint. This is to prevent a race condition where a milestone
// or checkpoint was whitelisted while the block execution happened (and wasn't
// available sometime before) and the block turns out to be inavlid (i.e. not
// honouring the milestone or checkpoint). Use the block itself as current block
// so that it's considered as a `past` chain and the validation doesn't get bypassed.
isValid, err = bc.forker.ValidateReorg(block.Header(), []*types.Header{block.Header()})
if err != nil {
return it.index, err
}
if !isValid {
return it.index, whitelist.ErrMismatch
}
if !setHead {
// Don't set the head, only insert the block
_, err = bc.writeBlockWithState(block, receipts, logs, statedb)