monad (execution) v0.16.5 Changelog

Tag: v0.16.5

Notable RPC/SDK changes

• [RPC] An empty full state override now zeroes the overridden account's storage, matching Geth.
  • Ref: monad (execution) PR #2571
• [RPC] eth_simulateV1 enforces the configured maximum response size.
  • Ref: monad (execution) PR #2395, monad-bft PR #3156
• [RPC] eth_simulateV1 and related paths exit gracefully when a block state merge fails, instead of terminating the request abnormally.
  • Ref: monad (execution) PR #2565, monad (execution) PR #2570

Notable robustness changes

• [EVM] Hardened RLP decoding of EIP-2718 transactions and EIP-4844 blob hash lists, and fixed list-prefix encoding writing past its size.
  • Ref: monad (execution) PR #2555, monad (execution) PR #2569
• [EVM] Hardened the offset trie decoder: the constructor validates that the data forms a tree, path length is bounded at MAX_PATH_NIBBLES, and an out-of-bounds read in checked_end is fixed. Not reachable in production: the offset trie is used only by execution-witness decoding, which has no caller in node execution today.
  • Ref: monad (execution) PR #2496
• [Node ops] The execution event recorder no longer passes a null buffer to mempcpy when --record-exec-events is on.
  • Ref: monad (execution) PR #2580
• [RPC] The triedb range query now validates its prefix key length, closing an over-read of the caller's buffer.
  • Ref: monad (execution) PR #2599
• [Node ops] Fixed two shutdown races: fiber pool threads could free their scheduler while another thread was still waking them, and the VM compile thread's lock was released from the wrong thread.
  • Ref: monad (execution) PR #2594, monad (execution) PR #2593

Notable performance changes

• [Node ops] The triedb storage pool is a single device. Opening a 700 GiB pool uses roughly 29% less peak memory in monad-mpt. Existing pools open unchanged.
  • Ref: monad (execution) PR #2562, monad-bft PR #3270
• [EVM] Widened the JUMPDEST scan index to 64-bit.
  • Ref: monad (execution) PR #2553

Notable internal changes

• [Node ops] monad-mpt --grow takes up the space after the triedb device is extended in place with lvextend or a grown RAID array. It runs offline in seconds, moves no data, and can be re-run if interrupted. The node must run once on this release before the device is extended; a device extended earlier is refused.
  • Ref: monad (execution) PR #2563
• [Node ops] monad-node exports seven triedb update/compaction gauges read from a statistics file written by execution. The packaged units set --db-stats-file and --triedb-stats-path to the same path; both are off by default.
  • Ref: monad (execution) PR #2552, monad-bft PR #3264
• [EVM] The bn128 precompiles (ecAdd, ecMul, ecPairing) are vendored in-tree with unchanged semantics, and ecrecover shares one implementation with transaction sender recovery.
  • Ref: monad (execution) PR #2522, monad (execution) PR #2547
• [EVM] MIP-8 page-storage accounting is routed through the EVMC host interface. No behaviour change.
  • Ref: monad (execution) PR #2548

Full Changelog: v0.16.4...v0.16.5