Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

core: validate chain before writing block to avoid race condition #1319

Open
wants to merge 2 commits into
base: develop
Choose a base branch
from
Open

core: validate chain before writing block to avoid race condition #1319

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
f046a01
core: validate chain before writing block
manav2401 Aug 29, 2024
9040dd1
Merge branch 'develop' into manav/validate-chain-before-insert
manav2401 Nov 7, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
14 changes: 14 additions & 0 deletions core/blockchain.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -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)
Expand Down
Loading