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fix(p2p): remove disconnected peers from scoring maps#22009

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PhilWindle merged 1 commit into
merge-train/spartanfrom
spyros/a-728-audit-52-memory-leak-in-peer-scoring-disconnected-peers
Mar 26, 2026
Merged

fix(p2p): remove disconnected peers from scoring maps#22009
PhilWindle merged 1 commit into
merge-train/spartanfrom
spyros/a-728-audit-52-memory-leak-in-peer-scoring-disconnected-peers

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@spypsy

@spypsy spypsy commented Mar 25, 2026

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Summary

  • Fix memory leak in PeerScoring where the scores and lastUpdateTime maps grow unboundedly because entries for penalized peers are never removed after disconnect
  • Add cleanup in decayAllScores() to prune entries once |score| decays below 0.1 (functionally zero)
  • Add removePeer() method and call it from handleDisconnectedPeerEvent for peers in healthy score state, cleaning up immediately on disconnect
  • Penalized (unhealthy) peers retain their score entries until decay completes, so they can't bypass penalties by reconnecting

Fixes A-728

Tests

  • Added unit test for removePeer verifying score data is fully deleted
  • Added unit test for decayAllScores verifying near-zero entries are pruned while significant entries are retained
  • All 14 peer scoring tests pass

Made with Cursor

@PhilWindle PhilWindle merged commit 4d7adb0 into merge-train/spartan Mar 26, 2026
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@PhilWindle PhilWindle deleted the spyros/a-728-audit-52-memory-leak-in-peer-scoring-disconnected-peers branch March 26, 2026 09:29
github-merge-queue Bot pushed a commit that referenced this pull request Mar 27, 2026
BEGIN_COMMIT_OVERRIDE
fix: only clear provenBlockNumber when it exceeds prune point (#21946)
chore: (A-779) load all accounts before calling
LogService.#getSecretsForSenders (#21923)
fix: align staging-public mana target with testnet/mainnet (#21983)
chore: (A-777) add warn logs for regressive path in block synchronizer
(#21925)
fix: fully validate txs retrieved from tx file store (#21988)
refactor: extract checkpoint proposal handling to ProposalHandler
(#21999)
fix: unbounded memory in calldataRetriever (#22004)
fix(p2p): check peer rate limit before global to prevent quota
starvation (#21997)
fix(p2p): evict expired failed-auth-handshake entries on heartbeat
(#21992)
chore: defensively handle skipPushProposedBlocksToArchiver (#22017)
chore: bump testnet prover resource profile to prod-hi-tps (#22019)
chore: (A-835) remove unused serializer (#22037)
fix(p2p): remove disconnected peers from scoring maps (#22009)
fix(e2e): set anvilSlotsInAnEpoch in slashing tests (#21869)
fix(ethereum): Audit fixes A-810, A-812 (nonce race, isEscapeHatchOpen
logging) (#21948)
chore: remove old TxPool implementation (#22028)
fix: Fix blob encoding when uploaded from proposals (#22045)
chore: Adds /cycle and /fix skills. Also configures linear mcp server
(#22043)
chore: remove validatorReexecute config option (#22024)
fix(sequencer): use last L1 slot of L2 slot as eth_simulateV1 timestamp
(#22023)
docs(simulator): clarify teardown gas billing is intentional (#22057)
chore: revert account loading optimization in log service (#22062)
fix: use DateProvider in PeerScoring (#22070)
fix(aztec.js): preserve extraHashedArgs in DeployMethod.with() (#22053)
fix(p2p): replace process.exit() with graceful shutdown in worker
cleanup (#22046)
chore: merge next (#22089)
fix(stdlib): correct NoteDao size (#22068)
feat: improve blob download from filestores (#22096)
fix: remove stale tx_pool v1 benchmark reference (#22104)
END_COMMIT_OVERRIDE
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2 participants