Add an error return to all actor state interface methods

chain/actors/builtin/market/market.go

@@ -31,13 +31,13 @@ func Load(store adt.Store, act *types.Actor) (st State, err error) {
 
 type State interface {
 	cbor.Marshaler
-	BalancesChanged(State) bool
+	BalancesChanged(State) (bool, error)
 	EscrowTable() (BalanceTable, error)
 	LockedTable() (BalanceTable, error)
 	TotalLocked() (abi.TokenAmount, error)
-	StatesChanged(State) bool
+	StatesChanged(State) (bool, error)
 	States() (DealStates, error)
-	ProposalsChanged(State) bool
+	ProposalsChanged(State) (bool, error)
 	Proposals() (DealProposals, error)
 	VerifyDealsForActivation(
 		minerAddr address.Address, deals []abi.DealID, currEpoch, sectorExpiry abi.ChainEpoch,

chain/actors/builtin/market/v0.go

@@ -25,24 +25,24 @@ func (s *state0) TotalLocked() (abi.TokenAmount, error) {
 	return fml, nil
 }
 
-func (s *state0) BalancesChanged(otherState State) bool {
+func (s *state0) BalancesChanged(otherState State) (bool, error) {
 	otherState0, ok := otherState.(*state0)
 	if !ok {
 		// there's no way to compare different versions of the state, so let's
 		// just say that means the state of balances has changed
-		return true
+		return true, nil
 	}
-	return !s.State.EscrowTable.Equals(otherState0.State.EscrowTable) || !s.State.LockedTable.Equals(otherState0.State.LockedTable)
+	return !s.State.EscrowTable.Equals(otherState0.State.EscrowTable) || !s.State.LockedTable.Equals(otherState0.State.LockedTable), nil
 }
 
-func (s *state0) StatesChanged(otherState State) bool {
+func (s *state0) StatesChanged(otherState State) (bool, error) {
 	otherState0, ok := otherState.(*state0)
 	if !ok {
 		// there's no way to compare different versions of the state, so let's
 		// just say that means the state of balances has changed
-		return true
+		return true, nil
 	}
-	return !s.State.States.Equals(otherState0.State.States)
+	return !s.State.States.Equals(otherState0.State.States), nil
 }
 
 func (s *state0) States() (DealStates, error) {
@@ -53,14 +53,14 @@ func (s *state0) States() (DealStates, error) {
 	return &dealStates0{stateArray}, nil
 }
 
-func (s *state0) ProposalsChanged(otherState State) bool {
+func (s *state0) ProposalsChanged(otherState State) (bool, error) {
 	otherState0, ok := otherState.(*state0)
 	if !ok {
 		// there's no way to compare different versions of the state, so let's
 		// just say that means the state of balances has changed
-		return true
+		return true, nil
 	}
-	return !s.State.Proposals.Equals(otherState0.State.Proposals)
+	return !s.State.Proposals.Equals(otherState0.State.Proposals), nil
 }
 
 func (s *state0) Proposals() (DealProposals, error) {

chain/actors/builtin/miner/miner.go

@@ -58,11 +58,11 @@ type State interface {
 	LoadDeadline(idx uint64) (Deadline, error)
 	ForEachDeadline(cb func(idx uint64, dl Deadline) error) error
 	NumDeadlines() (uint64, error)
-	DeadlinesChanged(State) bool
+	DeadlinesChanged(State) (bool, error)
 
 	Info() (MinerInfo, error)
 
-	DeadlineInfo(epoch abi.ChainEpoch) *dline.Info
+	DeadlineInfo(epoch abi.ChainEpoch) (*dline.Info, error)
 
 	// Diff helpers. Used by Diff* functions internally.
 	sectors() (adt.Array, error)
@@ -76,7 +76,7 @@ type Deadline interface {
 	ForEachPartition(cb func(idx uint64, part Partition) error) error
 	PostSubmissions() (bitfield.BitField, error)
 
-	PartitionsChanged(Deadline) bool
+	PartitionsChanged(Deadline) (bool, error)
 }
 
 type Partition interface {

chain/actors/builtin/miner/v0.go

@@ -244,14 +244,14 @@ func (s *state0) NumDeadlines() (uint64, error) {
 	return miner0.WPoStPeriodDeadlines, nil
 }
 
-func (s *state0) DeadlinesChanged(other State) bool {
+func (s *state0) DeadlinesChanged(other State) (bool, error) {
 	other0, ok := other.(*state0)
 	if !ok {
 		// treat an upgrade as a change, always
-		return true
+		return true, nil
 	}
 
-	return s.State.Deadlines.Equals(other0.Deadlines)
+	return s.State.Deadlines.Equals(other0.Deadlines), nil
 }
 
 func (s *state0) Info() (MinerInfo, error) {
@@ -288,8 +288,8 @@ func (s *state0) Info() (MinerInfo, error) {
 	return mi, nil
 }
 
-func (s *state0) DeadlineInfo(epoch abi.ChainEpoch) *dline.Info {
-	return s.State.DeadlineInfo(epoch)
+func (s *state0) DeadlineInfo(epoch abi.ChainEpoch) (*dline.Info, error) {
+	return s.State.DeadlineInfo(epoch), nil
 }
 
 func (s *state0) sectors() (adt.Array, error) {
@@ -339,14 +339,14 @@ func (d *deadline0) ForEachPartition(cb func(uint64, Partition) error) error {
 	})
 }
 
-func (d *deadline0) PartitionsChanged(other Deadline) bool {
+func (d *deadline0) PartitionsChanged(other Deadline) (bool, error) {
 	other0, ok := other.(*deadline0)
 	if !ok {
 		// treat an upgrade as a change, always
-		return true
+		return true, nil
 	}
 
-	return d.Deadline.Partitions.Equals(other0.Deadline.Partitions)
+	return d.Deadline.Partitions.Equals(other0.Deadline.Partitions), nil
 }
 
 func (d *deadline0) PostSubmissions() (bitfield.BitField, error) {

chain/actors/builtin/multisig/multisig.go

@@ -31,11 +31,11 @@ type State interface {
 	cbor.Marshaler
 
 	LockedBalance(epoch abi.ChainEpoch) (abi.TokenAmount, error)
-	StartEpoch() abi.ChainEpoch
-	UnlockDuration() abi.ChainEpoch
-	InitialBalance() abi.TokenAmount
-	Threshold() uint64
-	Signers() []address.Address
+	StartEpoch() (abi.ChainEpoch, error)
+	UnlockDuration() (abi.ChainEpoch, error)
+	InitialBalance() (abi.TokenAmount, error)
+	Threshold() (uint64, error)
+	Signers() ([]address.Address, error)
 
 	ForEachPendingTxn(func(id int64, txn Transaction) error) error
 }

chain/actors/builtin/multisig/v0.go

@@ -23,24 +23,24 @@ func (s *state0) LockedBalance(currEpoch abi.ChainEpoch) (abi.TokenAmount, error
 	return s.State.AmountLocked(currEpoch - s.State.StartEpoch), nil
 }
 
-func (s *state0) StartEpoch() abi.ChainEpoch {
-	return s.State.StartEpoch
+func (s *state0) StartEpoch() (abi.ChainEpoch, error) {
+	return s.State.StartEpoch, nil
 }
 
-func (s *state0) UnlockDuration() abi.ChainEpoch {
-	return s.State.UnlockDuration
+func (s *state0) UnlockDuration() (abi.ChainEpoch, error) {
+	return s.State.UnlockDuration, nil
 }
 
-func (s *state0) InitialBalance() abi.TokenAmount {
-	return s.State.InitialBalance
+func (s *state0) InitialBalance() (abi.TokenAmount, error) {
+	return s.State.InitialBalance, nil
 }
 
-func (s *state0) Threshold() uint64 {
-	return s.State.NumApprovalsThreshold
+func (s *state0) Threshold() (uint64, error) {
+	return s.State.NumApprovalsThreshold, nil
 }
 
-func (s *state0) Signers() []address.Address {
-	return s.State.Signers
+func (s *state0) Signers() ([]address.Address, error) {
+	return s.State.Signers, nil
 }
 
 func (s *state0) ForEachPendingTxn(cb func(id int64, txn Transaction) error) error {

chain/actors/builtin/paych/mock/mock.go

@@ -45,23 +45,23 @@ func (ms *mockState) MarshalCBOR(io.Writer) error {
 }
 
 // Channel owner, who has funded the actor
-func (ms *mockState) From() address.Address {
-	return ms.from
+func (ms *mockState) From() (address.Address, error) {
+	return ms.from, nil
 }
 
 // Recipient of payouts from channel
-func (ms *mockState) To() address.Address {
-	return ms.to
+func (ms *mockState) To() (address.Address, error) {
+	return ms.to, nil
 }
 
 // Height at which the channel can be `Collected`
-func (ms *mockState) SettlingAt() abi.ChainEpoch {
-	return ms.settlingAt
+func (ms *mockState) SettlingAt() (abi.ChainEpoch, error) {
+	return ms.settlingAt, nil
 }
 
 // Amount successfully redeemed through the payment channel, paid out on `Collect()`
-func (ms *mockState) ToSend() abi.TokenAmount {
-	return ms.toSend
+func (ms *mockState) ToSend() (abi.TokenAmount, error) {
+	return ms.toSend, nil
 }
 
 // Get total number of lanes
@@ -80,10 +80,10 @@ func (ms *mockState) ForEachLaneState(cb func(idx uint64, dl paych.LaneState) er
 	return lastErr
 }
 
-func (mls *mockLaneState) Redeemed() big.Int {
-	return mls.redeemed
+func (mls *mockLaneState) Redeemed() (big.Int, error) {
+	return mls.redeemed, nil
 }
 
-func (mls *mockLaneState) Nonce() uint64 {
-	return mls.nonce
+func (mls *mockLaneState) Nonce() (uint64, error) {
+	return mls.nonce, nil
 }

chain/actors/builtin/paych/paych.go

@@ -33,15 +33,15 @@ func Load(store adt.Store, act *types.Actor) (State, error) {
 type State interface {
 	cbor.Marshaler
 	// Channel owner, who has funded the actor
-	From() address.Address
+	From() (address.Address, error)
 	// Recipient of payouts from channel
-	To() address.Address
+	To() (address.Address, error)
 
 	// Height at which the channel can be `Collected`
-	SettlingAt() abi.ChainEpoch
+	SettlingAt() (abi.ChainEpoch, error)
 
 	// Amount successfully redeemed through the payment channel, paid out on `Collect()`
-	ToSend() abi.TokenAmount
+	ToSend() (abi.TokenAmount, error)
 
 	// Get total number of lanes
 	LaneCount() (uint64, error)
@@ -52,8 +52,8 @@ type State interface {
 
 // LaneState is an abstract copy of the state of a single lane
 type LaneState interface {
-	Redeemed() big.Int
-	Nonce() uint64
+	Redeemed() (big.Int, error)
+	Nonce() (uint64, error)
 }
 
 type SignedVoucher = paych0.SignedVoucher

chain/actors/builtin/paych/v0.go

@@ -18,23 +18,23 @@ type state0 struct {
 }
 
 // Channel owner, who has funded the actor
-func (s *state0) From() address.Address {
-	return s.State.From
+func (s *state0) From() (address.Address, error) {
+	return s.State.From, nil
 }
 
 // Recipient of payouts from channel
-func (s *state0) To() address.Address {
-	return s.State.To
+func (s *state0) To() (address.Address, error) {
+	return s.State.To, nil
 }
 
 // Height at which the channel can be `Collected`
-func (s *state0) SettlingAt() abi.ChainEpoch {
-	return s.State.SettlingAt
+func (s *state0) SettlingAt() (abi.ChainEpoch, error) {
+	return s.State.SettlingAt, nil
 }
 
 // Amount successfully redeemed through the payment channel, paid out on `Collect()`
-func (s *state0) ToSend() abi.TokenAmount {
-	return s.State.ToSend
+func (s *state0) ToSend() (abi.TokenAmount, error) {
+	return s.State.ToSend, nil
 }
 
 func (s *state0) getOrLoadLsAmt() (*adt0.Array, error) {
@@ -82,10 +82,10 @@ type laneState0 struct {
 	paych.LaneState
 }
 
-func (ls *laneState0) Redeemed() big.Int {
-	return ls.LaneState.Redeemed
+func (ls *laneState0) Redeemed() (big.Int, error) {
+	return ls.LaneState.Redeemed, nil
 }
 
-func (ls *laneState0) Nonce() uint64 {
-	return ls.LaneState.Nonce
+func (ls *laneState0) Nonce() (uint64, error) {
+	return ls.LaneState.Nonce, nil
 }

chain/events/state/predicates.go

@@ -97,7 +97,12 @@ type DiffBalanceTablesFunc func(ctx context.Context, oldBalanceTable, newBalance
 // OnBalanceChanged runs when the escrow table for available balances changes
 func (sp *StatePredicates) OnBalanceChanged(diffBalances DiffBalanceTablesFunc) DiffStorageMarketStateFunc {
 	return func(ctx context.Context, oldState market.State, newState market.State) (changed bool, user UserData, err error) {
-		if !oldState.BalancesChanged(newState) {
+		bc, err := oldState.BalancesChanged(newState)
+		if err != nil {
+			return false, nil, err
+		}
+
+		if !bc {
 			return false, nil, nil
 		}
 
@@ -132,7 +137,12 @@ type DiffAdtArraysFunc func(ctx context.Context, oldDealStateRoot, newDealStateR
 // OnDealStateChanged calls diffDealStates when the market deal state changes
 func (sp *StatePredicates) OnDealStateChanged(diffDealStates DiffDealStatesFunc) DiffStorageMarketStateFunc {
 	return func(ctx context.Context, oldState market.State, newState market.State) (changed bool, user UserData, err error) {
-		if !oldState.StatesChanged(newState) {
+		sc, err := oldState.StatesChanged(newState)
+		if err != nil {
+			return false, nil, err
+		}
+
+		if !sc {
 			return false, nil, nil
 		}
 
@@ -152,7 +162,12 @@ func (sp *StatePredicates) OnDealStateChanged(diffDealStates DiffDealStatesFunc)
 // OnDealProposalChanged calls diffDealProps when the market proposal state changes
 func (sp *StatePredicates) OnDealProposalChanged(diffDealProps DiffDealProposalsFunc) DiffStorageMarketStateFunc {
 	return func(ctx context.Context, oldState market.State, newState market.State) (changed bool, user UserData, err error) {
-		if !oldState.ProposalsChanged(newState) {
+		pc, err := oldState.ProposalsChanged(newState)
+		if err != nil {
+			return false, nil, err
+		}
+
+		if !pc {
 			return false, nil, nil
 		}
 
@@ -379,12 +394,22 @@ type PayChToSendChange struct {
 // OnToSendAmountChanges monitors changes on the total amount to send from one party to the other on a payment channel
 func (sp *StatePredicates) OnToSendAmountChanges() DiffPaymentChannelStateFunc {
 	return func(ctx context.Context, oldState paych.State, newState paych.State) (changed bool, user UserData, err error) {
-		if oldState.ToSend().Equals(newState.ToSend()) {
+		ots, err := oldState.ToSend()
+		if err != nil {
+			return false, nil, err
+		}
+
+		nts, err := newState.ToSend()
+		if err != nil {
+			return false, nil, err
+		}
+
+		if ots.Equals(nts) {
 			return false, nil, nil
 		}
 		return true, &PayChToSendChange{
-			OldToSend: oldState.ToSend(),
-			NewToSend: newState.ToSend(),
+			OldToSend: ots,
+			NewToSend: nts,
 		}, nil
 	}
 }

chain/stmgr/stmgr.go

@@ -843,15 +843,30 @@ func (sm *StateManager) setupGenesisActors(ctx context.Context) error {
 				return err
 			}
 
-			if s.StartEpoch() != 0 {
+			se, err := s.StartEpoch()
+			if err != nil {
+				return err
+			}
+
+			if se != 0 {
 				return xerrors.New("genesis multisig doesn't start vesting at epoch 0!")
 			}
 
-			ot, f := totalsByEpoch[s.UnlockDuration()]
+			ud, err := s.UnlockDuration()
+			if err != nil {
+				return err
+			}
+
+			ib, err := s.InitialBalance()
+			if err != nil {
+				return err
+			}
+
+			ot, f := totalsByEpoch[ud]
 			if f {
-				totalsByEpoch[s.UnlockDuration()] = big.Add(ot, s.InitialBalance())
+				totalsByEpoch[ud] = big.Add(ot, ib)
 			} else {
-				totalsByEpoch[s.UnlockDuration()] = s.InitialBalance()
+				totalsByEpoch[ud] = ib
 			}
 
 		} else if act.IsAccountActor() {

cli/multisig.go

@@ -206,13 +206,32 @@ var msigInspectCmd = &cli.Command{
 		fmt.Printf("Spendable: %s\n", types.FIL(types.BigSub(act.Balance, locked)))
 
 		if cctx.Bool("vesting") {
-			fmt.Printf("InitialBalance: %s\n", types.FIL(mstate.InitialBalance()))
-			fmt.Printf("StartEpoch: %d\n", mstate.StartEpoch())
-			fmt.Printf("UnlockDuration: %d\n", mstate.UnlockDuration())
+			ib, err := mstate.InitialBalance()
+			if err != nil {
+				return err
+			}
+			fmt.Printf("InitialBalance: %s\n", types.FIL(ib))
+			se, err := mstate.StartEpoch()
+			if err != nil {
+				return err
+			}
+			fmt.Printf("StartEpoch: %d\n", se)
+			ud, err := mstate.UnlockDuration()
+			if err != nil {
+				return err
+			}
+			fmt.Printf("UnlockDuration: %d\n", ud)
 		}
 
-		signers := mstate.Signers()
-		fmt.Printf("Threshold: %d / %d\n", mstate.Threshold(), len(signers))
+		signers, err := mstate.Signers()
+		if err != nil {
+			return err
+		}
+		threshold, err := mstate.Threshold()
+		if err != nil {
+			return err
+		}
+		fmt.Printf("Threshold: %d / %d\n", threshold, len(signers))
 		fmt.Println("Signers:")
 		for _, s := range signers {
 			fmt.Printf("\t%s\n", s)

cli/paych_test.go

@@ -89,7 +89,9 @@ func TestPaymentChannels(t *testing.T) {
 
 	// Wait for the chain to reach the settle height
 	chState := getPaychState(ctx, t, paymentReceiver, chAddr)
-	waitForHeight(ctx, t, paymentReceiver, chState.SettlingAt())
+	sa, err := chState.SettlingAt()
+	require.NoError(t, err)
+	waitForHeight(ctx, t, paymentReceiver, sa)
 
 	// receiver: paych collect <channel>
 	cmd = []string{chAddr.String()}

cmd/lotus-chainwatch/processor/miner.go

@@ -684,7 +684,11 @@ func (p *Processor) diffMinerPartitions(ctx context.Context, m minerActorInfo, e
 		return err
 	}
 	curMiner := m.state
-	if !prevMiner.DeadlinesChanged(curMiner) {
+	dc, err := prevMiner.DeadlinesChanged(curMiner)
+	if err != nil {
+		return err
+	}
+	if !dc {
 		return nil
 	}
 	panic("TODO")

cmd/lotus-shed/genesis-verify.go

@@ -108,10 +108,19 @@ var genesisVerifyCmd = &cli.Command{
 					return xerrors.Errorf("multisig actor: %w", err)
 				}
 
+				signers, err := st.Signers()
+				if err != nil {
+					return xerrors.Errorf("multisig actor: %w", err)
+				}
+				threshold, err := st.Threshold()
+				if err != nil {
+					return xerrors.Errorf("multisig actor: %w", err)
+				}
+
 				kmultisigs[addr] = msigInfo{
 					Balance:   types.FIL(act.Balance),
-					Signers:   st.Signers(),
-					Threshold: st.Threshold(),
+					Signers:   signers,
+					Threshold: threshold,
 				}
 				msigAddrs = append(msigAddrs, addr)
 			case act.IsAccountActor():

node/impl/full/state.go

@@ -212,7 +212,12 @@ func (a *StateAPI) StateMinerProvingDeadline(ctx context.Context, addr address.A
 		return nil, xerrors.Errorf("failed to load miner actor state: %w", err)
 	}
 
-	return mas.DeadlineInfo(ts.Height()).NextNotElapsed(), nil
+	di, err := mas.DeadlineInfo(ts.Height())
+	if err != nil {
+		return nil, xerrors.Errorf("failed to get deadline info: %w", err)
+	}
+
+	return di.NextNotElapsed(), nil
 }
 
 func (a *StateAPI) StateMinerFaults(ctx context.Context, addr address.Address, tsk types.TipSetKey) (bitfield.BitField, error) {

paychmgr/paych.go

@@ -48,12 +48,12 @@ type laneState struct {
 	nonce    uint64
 }
 
-func (ls laneState) Redeemed() big.Int {
-	return ls.redeemed
+func (ls laneState) Redeemed() (big.Int, error) {
+	return ls.redeemed, nil
 }
 
-func (ls laneState) Nonce() uint64 {
-	return ls.nonce
+func (ls laneState) Nonce() (uint64, error) {
+	return ls.nonce, nil
 }
 
 // channelAccessor is used to simplify locking when accessing a channel
@@ -181,7 +181,12 @@ func (ca *channelAccessor) checkVoucherValidUnlocked(ctx context.Context, ch add
 	}
 
 	// Load channel "From" account actor state
-	from, err := ca.api.ResolveToKeyAddress(ctx, pchState.From(), nil)
+	f, err := pchState.From()
+	if err != nil {
+		return nil, err
+	}
+
+	from, err := ca.api.ResolveToKeyAddress(ctx, f, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -208,14 +213,25 @@ func (ca *channelAccessor) checkVoucherValidUnlocked(ctx context.Context, ch add
 	// If the new voucher nonce value is less than the highest known
 	// nonce for the lane
 	ls, lsExists := laneStates[sv.Lane]
-	if lsExists && sv.Nonce <= ls.Nonce() {
+	if lsExists {
+		n, err := ls.Nonce()
+		if err != nil {
+			return nil, err
+		}
+
+		if sv.Nonce <= n {
 			return nil, fmt.Errorf("nonce too low")
 		}
 
 		// If the voucher amount is less than the highest known voucher amount
-	if lsExists && sv.Amount.LessThanEqual(ls.Redeemed()) {
+		r, err := ls.Redeemed()
+		if err != nil {
+			return nil, err
+		}
+		if sv.Amount.LessThanEqual(r) {
 			return nil, fmt.Errorf("voucher amount is lower than amount for voucher with lower nonce")
 		}
+	}
 
 	// Total redeemed is the total redeemed amount for all lanes, including
 	// the new voucher
@@ -239,7 +255,12 @@ func (ca *channelAccessor) checkVoucherValidUnlocked(ctx context.Context, ch add
 
 	// Total required balance = total redeemed + toSend
 	// Must not exceed actor balance
-	newTotal := types.BigAdd(totalRedeemed, pchState.ToSend())
+	ts, err := pchState.ToSend()
+	if err != nil {
+		return nil, err
+	}
+
+	newTotal := types.BigAdd(totalRedeemed, ts)
 	if act.Balance.LessThan(newTotal) {
 		return nil, newErrInsufficientFunds(types.BigSub(newTotal, act.Balance))
 	}
@@ -322,7 +343,7 @@ func (ca *channelAccessor) getPaychRecipient(ctx context.Context, ch address.Add
 		return address.Address{}, err
 	}
 
-	return state.To(), nil
+	return state.To()
 }
 
 func (ca *channelAccessor) addVoucher(ctx context.Context, ch address.Address, sv *paych0.SignedVoucher, proof []byte, minDelta types.BigInt) (types.BigInt, error) {
@@ -376,7 +397,10 @@ func (ca *channelAccessor) addVoucherUnlocked(ctx context.Context, ch address.Ad
 	laneState, exists := laneStates[sv.Lane]
 	redeemed := big.NewInt(0)
 	if exists {
-		redeemed = laneState.Redeemed()
+		redeemed, err = laneState.Redeemed()
+		if err != nil {
+			return types.NewInt(0), err
+		}
 	}
 
 	delta := types.BigSub(sv.Amount, redeemed)
@@ -531,10 +555,15 @@ func (ca *channelAccessor) laneState(ctx context.Context, state paych.State, ch
 		// If there's a voucher for a lane that isn't in chain state just
 		// create it
 		ls, ok := laneStates[v.Voucher.Lane]
-
-		if ok && v.Voucher.Nonce < ls.Nonce() {
+		if ok {
+			n, err := ls.Nonce()
+			if err != nil {
+				return nil, err
+			}
+			if v.Voucher.Nonce < n {
 				continue
 			}
+		}
 
 		laneStates[v.Voucher.Lane] = laneState{v.Voucher.Amount, v.Voucher.Nonce}
 	}
@@ -551,17 +580,31 @@ func (ca *channelAccessor) totalRedeemedWithVoucher(laneStates map[uint64]paych.
 
 	total := big.NewInt(0)
 	for _, ls := range laneStates {
-		total = big.Add(total, ls.Redeemed())
+		r, err := ls.Redeemed()
+		if err != nil {
+			return big.Int{}, err
+		}
+		total = big.Add(total, r)
 	}
 
 	lane, ok := laneStates[sv.Lane]
 	if ok {
 		// If the voucher is for an existing lane, and the voucher nonce
 		// is higher than the lane nonce
-		if sv.Nonce > lane.Nonce() {
+		n, err := lane.Nonce()
+		if err != nil {
+			return big.Int{}, err
+		}
+
+		if sv.Nonce > n {
 			// Add the delta between the redeemed amount and the voucher
 			// amount to the total
-			delta := big.Sub(sv.Amount, lane.Redeemed())
+			r, err := lane.Redeemed()
+			if err != nil {
+				return big.Int{}, err
+			}
+
+			delta := big.Sub(sv.Amount, r)
 			total = big.Add(total, delta)
 		}
 	} else {

paychmgr/simple.go

@@ -317,7 +317,11 @@ func (ca *channelAccessor) currentAvailableFunds(channelID string, queuedAmt typ
 		}
 
 		for _, ls := range laneStates {
-			totalRedeemed = types.BigAdd(totalRedeemed, ls.Redeemed())
+			r, err := ls.Redeemed()
+			if err != nil {
+				return nil, err
+			}
+			totalRedeemed = types.BigAdd(totalRedeemed, r)
 		}
 	}
 

paychmgr/state.go

@@ -24,11 +24,19 @@ func (ca *stateAccessor) loadStateChannelInfo(ctx context.Context, ch address.Ad
 	}
 
 	// Load channel "From" account actor state
-	from, err := ca.sm.ResolveToKeyAddress(ctx, st.From(), nil)
+	f, err := st.From()
 	if err != nil {
 		return nil, err
 	}
-	to, err := ca.sm.ResolveToKeyAddress(ctx, st.To(), nil)
+	from, err := ca.sm.ResolveToKeyAddress(ctx, f, nil)
+	if err != nil {
+		return nil, err
+	}
+	t, err := st.To()
+	if err != nil {
+		return nil, err
+	}
+	to, err := ca.sm.ResolveToKeyAddress(ctx, t, nil)
 	if err != nil {
 		return nil, err
 	}