fix

cosmos/runtime/txpool/mempool.go

@@ -127,13 +127,15 @@ func (m *Mempool) Insert(ctx context.Context, sdkTx sdk.Tx) error {
  m.blockBuilderMu.RLock()
  errs := m.TxPool.Add([]*ethtypes.Transaction{ethTx}, false, false)
  m.blockBuilderMu.RUnlock()
- if len(errs) > 0 {
- // Handle case where a node broadcasts to itself, we don't want it to fail CheckTx.
- if errors.Is(errs[0], ethtxpool.ErrAlreadyKnown) &&
- (sCtx.ExecMode() == sdk.ExecModeCheck || sCtx.ExecMode() == sdk.ExecModeReCheck) {
- telemetry.IncrCounter(float32(1), MetricKeyMempoolKnownTxs)
- return nil
- }
+
+ // Handle case where a node broadcasts to itself, we don't want it to fail CheckTx.
+ // Note: it's safe to check errs[0] because geth returns `errs` of length 1.
+ if errors.Is(errs[0], ethtxpool.ErrAlreadyKnown) &&
+ (sCtx.ExecMode() == sdk.ExecModeCheck || sCtx.ExecMode() == sdk.ExecModeReCheck) {
+ telemetry.IncrCounter(float32(1), MetricKeyMempoolKnownTxs)
+ return nil
+ }
+ if errs[0] != nil {
  return errs[0]
  }