Implements ethereum/go-ethereum PR #31202 and #31618.
When local tracking is enabled:
- EthAPIBackend.SendTx tracks transactions after pool submission and keeps tracking temporary rejects so they can be retried by the local tracker.
- TxPool.AddLocal tracks accepted submissions and temporary rejects for local re-journal/re-submit flows, while preserving the original txpool error return to the caller.
This avoids persisting permanently invalid transactions while preserving retry signals for transient failures without masking submission outcomes in caller workflows.
Also included:
- classify temporary rejection reasons in core/txpool/locals
- expose SubPool.ValidateTxBasics and align LegacyPool implementation
- split low-tip rejection into ErrTxGasPriceTooLow
- simplify local tracker integration in txpool
- update txpool and eth tests for accepted vs retryable local tracking behavior
Refs: ethereum/go-ethereum#31202
Refs: ethereum/go-ethereum#31618
A runtime panic was triggered in promoteExecutables/demoteUnexecutables when
account balance was converted with uint256.MustFromBig(...):
panic: overflow
... legacypool.go:1637
Root cause:
- pool.currentState.GetBalance(addr) can exceed uint256 range in this code path.
- uint256.MustFromBig(balance) panics on overflow, crashing the reorg loop.
What this commit changes:
- remove uint256.MustFromBig(balance) from executable/non-executable filtering paths
- change list.Filter costLimit from *uint256.Int to *big.Int, and compare costs using big.Int directly
- keep overflow-safe totalcost accounting for replacements (subtract old cost first, then add new)
- return txpool.ErrSpecialTxCostOverflow for special-tx cost/totalcost overflow instead of returning (false, nil)
- avoid partial pending-state mutation by attaching a new pending list only after overflow-safe totalcost calculation succeeds
Tests:
- add regression coverage for special-tx overflow rejection returning non-nil error
- verify no pending/lookup/nonce mutation on overflow rejection
- cover replacement paths to ensure no intermediate-overflow regressions in list.Add/promoteSpecialTx
