core/state, trie/triedb/pathdb: remove storage incomplete flag (#28940)

As SELF-DESTRUCT opcode is disabled in the cancun fork(unless the
account is created within the same transaction, nothing to delete
in this case). The account will only be deleted in the following
cases:

- The account is created within the same transaction. In this case
the original storage was empty.

- The account is empty(zero nonce, zero balance, zero code) and
is touched within the transaction. Fortunately this kind of accounts
are not-existent on ethereum-mainnet.

All in all, after cancun, we are pretty sure there is no large contract
deletion and we don't need this mechanism for oom protection.

core/state/metrics.go

@@ -33,5 +33,4 @@ var (
 	slotDeletionTimer    = metrics.NewRegisteredResettingTimer("state/delete/storage/timer", nil)
 	slotDeletionCount    = metrics.NewRegisteredMeter("state/delete/storage/slot", nil)
 	slotDeletionSize     = metrics.NewRegisteredMeter("state/delete/storage/size", nil)
-	slotDeletionSkip     = metrics.NewRegisteredGauge("state/delete/storage/skip", nil)
 )

core/state/statedb.go

@@ -36,12 +36,6 @@ import (
 	"github.com/holiman/uint256"
 )
 
-const (
-	// storageDeleteLimit denotes the highest permissible memory allocation
-	// employed for contract storage deletion.
-	storageDeleteLimit = 512 * 1024 * 1024
-)
-
 type revision struct {
 	id           int
 	journalIndex int
@@ -949,10 +943,10 @@ func (s *StateDB) clearJournalAndRefund() {
 // of a specific account. It leverages the associated state snapshot for fast
 // storage iteration and constructs trie node deletion markers by creating
 // stack trie with iterated slots.
-func (s *StateDB) fastDeleteStorage(addrHash common.Hash, root common.Hash) (bool, common.StorageSize, map[common.Hash][]byte, *trienode.NodeSet, error) {
+func (s *StateDB) fastDeleteStorage(addrHash common.Hash, root common.Hash) (common.StorageSize, map[common.Hash][]byte, *trienode.NodeSet, error) {
 	iter, err := s.snaps.StorageIterator(s.originalRoot, addrHash, common.Hash{})
 	if err != nil {
-		return false, 0, nil, nil, err
+		return 0, nil, nil, err
 	}
 	defer iter.Release()
 
@@ -968,40 +962,37 @@ func (s *StateDB) fastDeleteStorage(addrHash common.Hash, root common.Hash) (boo
 	})
 	stack := trie.NewStackTrie(options)
 	for iter.Next() {
-		if size > storageDeleteLimit {
-			return true, size, nil, nil, nil
-		}
 		slot := common.CopyBytes(iter.Slot())
 		if err := iter.Error(); err != nil { // error might occur after Slot function
-			return false, 0, nil, nil, err
+			return 0, nil, nil, err
 		}
 		size += common.StorageSize(common.HashLength + len(slot))
 		slots[iter.Hash()] = slot
 
 		if err := stack.Update(iter.Hash().Bytes(), slot); err != nil {
-			return false, 0, nil, nil, err
+			return 0, nil, nil, err
 		}
 	}
 	if err := iter.Error(); err != nil { // error might occur during iteration
-		return false, 0, nil, nil, err
+		return 0, nil, nil, err
 	}
 	if stack.Hash() != root {
-		return false, 0, nil, nil, fmt.Errorf("snapshot is not matched, exp %x, got %x", root, stack.Hash())
+		return 0, nil, nil, fmt.Errorf("snapshot is not matched, exp %x, got %x", root, stack.Hash())
 	}
-	return false, size, slots, nodes, nil
+	return size, slots, nodes, nil
 }
 
 // slowDeleteStorage serves as a less-efficient alternative to "fastDeleteStorage,"
 // employed when the associated state snapshot is not available. It iterates the
 // storage slots along with all internal trie nodes via trie directly.
-func (s *StateDB) slowDeleteStorage(addr common.Address, addrHash common.Hash, root common.Hash) (bool, common.StorageSize, map[common.Hash][]byte, *trienode.NodeSet, error) {
+func (s *StateDB) slowDeleteStorage(addr common.Address, addrHash common.Hash, root common.Hash) (common.StorageSize, map[common.Hash][]byte, *trienode.NodeSet, error) {
 	tr, err := s.db.OpenStorageTrie(s.originalRoot, addr, root, s.trie)
 	if err != nil {
-		return false, 0, nil, nil, fmt.Errorf("failed to open storage trie, err: %w", err)
+		return 0, nil, nil, fmt.Errorf("failed to open storage trie, err: %w", err)
 	}
 	it, err := tr.NodeIterator(nil)
 	if err != nil {
-		return false, 0, nil, nil, fmt.Errorf("failed to open storage iterator, err: %w", err)
+		return 0, nil, nil, fmt.Errorf("failed to open storage iterator, err: %w", err)
 	}
 	var (
 		size  common.StorageSize
@@ -1009,9 +1000,6 @@ func (s *StateDB) slowDeleteStorage(addr common.Address, addrHash common.Hash, r
 		slots = make(map[common.Hash][]byte)
 	)
 	for it.Next(true) {
-		if size > storageDeleteLimit {
-			return true, size, nil, nil, nil
-		}
 		if it.Leaf() {
 			slots[common.BytesToHash(it.LeafKey())] = common.CopyBytes(it.LeafBlob())
 			size += common.StorageSize(common.HashLength + len(it.LeafBlob()))
@@ -1024,9 +1012,9 @@ func (s *StateDB) slowDeleteStorage(addr common.Address, addrHash common.Hash, r
 		nodes.AddNode(it.Path(), trienode.NewDeleted())
 	}
 	if err := it.Error(); err != nil {
-		return false, 0, nil, nil, err
+		return 0, nil, nil, err
 	}
-	return false, size, slots, nodes, nil
+	return size, slots, nodes, nil
 }
 
 // deleteStorage is designed to delete the storage trie of a designated account.
@@ -1034,11 +1022,10 @@ func (s *StateDB) slowDeleteStorage(addr common.Address, addrHash common.Hash, r
 // potentially leading to an out-of-memory panic. The function will make an attempt
 // to utilize an efficient strategy if the associated state snapshot is reachable;
 // otherwise, it will resort to a less-efficient approach.
-func (s *StateDB) deleteStorage(addr common.Address, addrHash common.Hash, root common.Hash) (bool, map[common.Hash][]byte, *trienode.NodeSet, error) {
+func (s *StateDB) deleteStorage(addr common.Address, addrHash common.Hash, root common.Hash) (map[common.Hash][]byte, *trienode.NodeSet, error) {
 	var (
 		start = time.Now()
 		err   error
-		aborted bool
 		size  common.StorageSize
 		slots map[common.Hash][]byte
 		nodes *trienode.NodeSet
@@ -1047,18 +1034,15 @@ func (s *StateDB) deleteStorage(addr common.Address, addrHash common.Hash, root
 	// generated, or it's internally corrupted. Fallback to the slow
 	// one just in case.
 	if s.snap != nil {
-		aborted, size, slots, nodes, err = s.fastDeleteStorage(addrHash, root)
+		size, slots, nodes, err = s.fastDeleteStorage(addrHash, root)
 	}
 	if s.snap == nil || err != nil {
-		aborted, size, slots, nodes, err = s.slowDeleteStorage(addr, addrHash, root)
+		size, slots, nodes, err = s.slowDeleteStorage(addr, addrHash, root)
 	}
 	if err != nil {
-		return false, nil, nil, err
+		return nil, nil, err
 	}
 	if metrics.EnabledExpensive {
-		if aborted {
-			slotDeletionSkip.Inc(1)
-		}
 		n := int64(len(slots))
 
 		slotDeletionMaxCount.UpdateIfGt(int64(len(slots)))
@@ -1068,7 +1052,7 @@ func (s *StateDB) deleteStorage(addr common.Address, addrHash common.Hash, root
 		slotDeletionCount.Mark(n)
 		slotDeletionSize.Mark(int64(size))
 	}
-	return aborted, slots, nodes, nil
+	return slots, nodes, nil
 }
 
 // handleDestruction processes all destruction markers and deletes the account
@@ -1095,13 +1079,12 @@ func (s *StateDB) deleteStorage(addr common.Address, addrHash common.Hash, root
 //
 // In case (d), **original** account along with its storages should be deleted,
 // with their values be tracked as original value.
-func (s *StateDB) handleDestruction(nodes *trienode.MergedNodeSet) (map[common.Address]struct{}, error) {
+func (s *StateDB) handleDestruction(nodes *trienode.MergedNodeSet) error {
 	// Short circuit if geth is running with hash mode. This procedure can consume
 	// considerable time and storage deletion isn't supported in hash mode, thus
 	// preemptively avoiding unnecessary expenses.
-	incomplete := make(map[common.Address]struct{})
 	if s.db.TrieDB().Scheme() == rawdb.HashScheme {
-		return incomplete, nil
+		return nil
 	}
 	for addr, prev := range s.stateObjectsDestruct {
 		// The original account was non-existing, and it's marked as destructed
@@ -1124,18 +1107,9 @@ func (s *StateDB) handleDestruction(nodes *trienode.MergedNodeSet) (map[common.A
 			continue
 		}
 		// Remove storage slots belong to the account.
-		aborted, slots, set, err := s.deleteStorage(addr, addrHash, prev.Root)
+		slots, set, err := s.deleteStorage(addr, addrHash, prev.Root)
 		if err != nil {
-			return nil, fmt.Errorf("failed to delete storage, err: %w", err)
-		}
-		// The storage is too huge to handle, skip it but mark as incomplete.
-		// For case (d), the account is resurrected might with a few slots
-		// created. In this case, wipe the entire storage state diff because
-		// of aborted deletion.
-		if aborted {
-			incomplete[addr] = struct{}{}
-			delete(s.storagesOrigin, addr)
-			continue
+			return fmt.Errorf("failed to delete storage, err: %w", err)
 		}
 		if s.storagesOrigin[addr] == nil {
 			s.storagesOrigin[addr] = slots
@@ -1147,10 +1121,10 @@ func (s *StateDB) handleDestruction(nodes *trienode.MergedNodeSet) (map[common.A
 			}
 		}
 		if err := nodes.Merge(set); err != nil {
-			return nil, err
+			return err
 		}
 	}
-	return incomplete, nil
+	return nil
 }
 
 // Commit writes the state to the underlying in-memory trie database.
@@ -1179,8 +1153,7 @@ func (s *StateDB) Commit(block uint64, deleteEmptyObjects bool) (common.Hash, er
 		codeWriter              = s.db.DiskDB().NewBatch()
 	)
 	// Handle all state deletions first
-	incomplete, err := s.handleDestruction(nodes)
-	if err != nil {
+	if err := s.handleDestruction(nodes); err != nil {
 		return common.Hash{}, err
 	}
 	// Handle all state updates afterwards
@@ -1276,7 +1249,7 @@ func (s *StateDB) Commit(block uint64, deleteEmptyObjects bool) (common.Hash, er
 	}
 	if root != origin {
 		start := time.Now()
-		set := triestate.New(s.accountsOrigin, s.storagesOrigin, incomplete)
+		set := triestate.New(s.accountsOrigin, s.storagesOrigin)
 		if err := s.db.TrieDB().Update(root, origin, block, nodes, set); err != nil {
 			return common.Hash{}, err
 		}

core/state/statedb_test.go

@@ -1161,12 +1161,12 @@ func TestDeleteStorage(t *testing.T) {
 	obj := fastState.getOrNewStateObject(addr)
 	storageRoot := obj.data.Root
 
-	_, _, fastNodes, err := fastState.deleteStorage(addr, crypto.Keccak256Hash(addr[:]), storageRoot)
+	_, fastNodes, err := fastState.deleteStorage(addr, crypto.Keccak256Hash(addr[:]), storageRoot)
 	if err != nil {
 		t.Fatal(err)
 	}
 
-	_, _, slowNodes, err := slowState.deleteStorage(addr, crypto.Keccak256Hash(addr[:]), storageRoot)
+	_, slowNodes, err := slowState.deleteStorage(addr, crypto.Keccak256Hash(addr[:]), storageRoot)
 	if err != nil {
 		t.Fatal(err)
 	}

trie/triestate/state.go

@@ -61,16 +61,14 @@ type TrieLoader interface {
 type Set struct {
 	Accounts map[common.Address][]byte                 // Mutated account set, nil means the account was not present
 	Storages map[common.Address]map[common.Hash][]byte // Mutated storage set, nil means the slot was not present
-	Incomplete map[common.Address]struct{}               // Indicator whether the storage is incomplete due to large deletion
 	size     common.StorageSize                        // Approximate size of set
 }
 
 // New constructs the state set with provided data.
-func New(accounts map[common.Address][]byte, storages map[common.Address]map[common.Hash][]byte, incomplete map[common.Address]struct{}) *Set {
+func New(accounts map[common.Address][]byte, storages map[common.Address]map[common.Hash][]byte) *Set {
 	return &Set{
 		Accounts: accounts,
 		Storages: storages,
-		Incomplete: incomplete,
 	}
 }
 
@@ -88,7 +86,6 @@ func (s *Set) Size() common.StorageSize {
 		}
 		s.size += common.StorageSize(common.AddressLength)
 	}
-	s.size += common.StorageSize(common.AddressLength * len(s.Incomplete))
 	return s.size
 }
 

triedb/pathdb/database.go

@@ -403,9 +403,6 @@ func (db *Database) Recoverable(root common.Hash) bool {
 		if m.parent != root {
 			return errors.New("unexpected state history")
 		}
-		if len(m.incomplete) > 0 {
-			return errors.New("incomplete state history")
-		}
 		root = m.root
 		return nil
 	}) == nil

triedb/pathdb/database_test.go

@@ -299,7 +299,7 @@ func (t *tester) generate(parent common.Hash) (common.Hash, *trienode.MergedNode
 			}
 		}
 	}
-	return root, ctx.nodes, triestate.New(ctx.accountOrigin, ctx.storageOrigin, nil)
+	return root, ctx.nodes, triestate.New(ctx.accountOrigin, ctx.storageOrigin)
 }
 
 // lastRoot returns the latest root hash, or empty if nothing is cached.
@@ -543,7 +543,7 @@ func TestCorruptedJournal(t *testing.T) {
 
 	// Mutate the journal in disk, it should be regarded as invalid
 	blob := rawdb.ReadTrieJournal(tester.db.diskdb)
-	blob[0] = 1
+	blob[0] = 0xa
 	rawdb.WriteTrieJournal(tester.db.diskdb, blob)
 
 	// Verify states, all not-yet-written states should be discarded

triedb/pathdb/disklayer.go

@@ -17,7 +17,6 @@
 package pathdb
 
 import (
-	"errors"
 	"fmt"
 	"sync"
 
@@ -239,12 +238,6 @@ func (dl *diskLayer) revert(h *history, loader triestate.TrieLoader) (*diskLayer
 	if h.meta.root != dl.rootHash() {
 		return nil, errUnexpectedHistory
 	}
-	// Reject if the provided state history is incomplete. It's due to
-	// a large construct SELF-DESTRUCT which can't be handled because
-	// of memory limitation.
-	if len(h.meta.incomplete) > 0 {
-		return nil, errors.New("incomplete state history")
-	}
 	if dl.id == 0 {
 		return nil, fmt.Errorf("%w: zero state id", errStateUnrecoverable)
 	}

triedb/pathdb/history.go

@@ -66,7 +66,7 @@ import (
 const (
 	accountIndexSize = common.AddressLength + 13 // The length of encoded account index
 	slotIndexSize    = common.HashLength + 5     // The length of encoded slot index
-	historyMetaSize  = 9 + 2*common.HashLength   // The length of fixed size part of meta object
+	historyMetaSize  = 9 + 2*common.HashLength   // The length of encoded history meta
 
 	stateHistoryVersion = uint8(0) // initial version of state history structure.
 )
@@ -196,19 +196,15 @@ type meta struct {
 	parent  common.Hash // prev-state root before the state transition
 	root    common.Hash // post-state root after the state transition
 	block   uint64      // associated block number
-	incomplete []common.Address // list of address whose storage set is incomplete
 }
 
 // encode packs the meta object into byte stream.
 func (m *meta) encode() []byte {
-	buf := make([]byte, historyMetaSize+len(m.incomplete)*common.AddressLength)
+	buf := make([]byte, historyMetaSize)
 	buf[0] = m.version
 	copy(buf[1:1+common.HashLength], m.parent.Bytes())
 	copy(buf[1+common.HashLength:1+2*common.HashLength], m.root.Bytes())
 	binary.BigEndian.PutUint64(buf[1+2*common.HashLength:historyMetaSize], m.block)
-	for i, h := range m.incomplete {
-		copy(buf[i*common.AddressLength+historyMetaSize:], h.Bytes())
-	}
 	return buf[:]
 }
 
@@ -219,20 +215,13 @@ func (m *meta) decode(blob []byte) error {
 	}
 	switch blob[0] {
 	case stateHistoryVersion:
-		if len(blob) < historyMetaSize {
+		if len(blob) != historyMetaSize {
 			return fmt.Errorf("invalid state history meta, len: %d", len(blob))
 		}
-		if (len(blob)-historyMetaSize)%common.AddressLength != 0 {
-			return fmt.Errorf("corrupted state history meta, len: %d", len(blob))
-		}
 		m.version = blob[0]
 		m.parent = common.BytesToHash(blob[1 : 1+common.HashLength])
 		m.root = common.BytesToHash(blob[1+common.HashLength : 1+2*common.HashLength])
 		m.block = binary.BigEndian.Uint64(blob[1+2*common.HashLength : historyMetaSize])
-		for pos := historyMetaSize; pos < len(blob); {
-			m.incomplete = append(m.incomplete, common.BytesToAddress(blob[pos:pos+common.AddressLength]))
-			pos += common.AddressLength
-		}
 		return nil
 	default:
 		return fmt.Errorf("unknown version %d", blob[0])
@@ -257,7 +246,6 @@ func newHistory(root common.Hash, parent common.Hash, block uint64, states *trie
 	var (
 		accountList []common.Address
 		storageList = make(map[common.Address][]common.Hash)
-		incomplete  []common.Address
 	)
 	for addr := range states.Accounts {
 		accountList = append(accountList, addr)
@@ -272,18 +260,12 @@ func newHistory(root common.Hash, parent common.Hash, block uint64, states *trie
 		slices.SortFunc(slist, common.Hash.Cmp)
 		storageList[addr] = slist
 	}
-	for addr := range states.Incomplete {
-		incomplete = append(incomplete, addr)
-	}
-	slices.SortFunc(incomplete, common.Address.Cmp)
-
 	return &history{
 		meta: &meta{
 			version: stateHistoryVersion,
 			parent:  parent,
 			root:    root,
 			block:   block,
-			incomplete: incomplete,
 		},
 		accounts:    states.Accounts,
 		accountList: accountList,

triedb/pathdb/history_test.go

@@ -47,7 +47,7 @@ func randomStateSet(n int) *triestate.Set {
 		account := generateAccount(types.EmptyRootHash)
 		accounts[addr] = types.SlimAccountRLP(account)
 	}
-	return triestate.New(accounts, storages, nil)
+	return triestate.New(accounts, storages)
 }
 
 func makeHistory() *history {

triedb/pathdb/journal.go

@@ -41,7 +41,13 @@ var (
 	errUnmatchedJournal  = errors.New("unmatched journal")
 )
 
-const journalVersion uint64 = 0
+// journalVersion ensures that an incompatible journal is detected and discarded.
+//
+// Changelog:
+//
+// - Version 0: initial version
+// - Version 1: storage.Incomplete field is removed
+const journalVersion uint64 = 1
 
 // journalNode represents a trie node persisted in the journal.
 type journalNode struct {
@@ -64,7 +70,6 @@ type journalAccounts struct {
 
 // journalStorage represents a list of storage slots belong to an account.
 type journalStorage struct {
-	Incomplete bool
 	Account common.Address
 	Hashes  []common.Hash
 	Slots   [][]byte
@@ -213,7 +218,6 @@ func (db *Database) loadDiffLayer(parent layer, r *rlp.Stream) (layer, error) {
 		jstorages []journalStorage
 		accounts  = make(map[common.Address][]byte)
 		storages  = make(map[common.Address]map[common.Hash][]byte)
-		incomplete = make(map[common.Address]struct{})
 	)
 	if err := r.Decode(&jaccounts); err != nil {
 		return nil, fmt.Errorf("load diff accounts: %v", err)
@@ -233,12 +237,9 @@ func (db *Database) loadDiffLayer(parent layer, r *rlp.Stream) (layer, error) {
 				set[h] = nil
 			}
 		}
-		if entry.Incomplete {
-			incomplete[entry.Account] = struct{}{}
-		}
 		storages[entry.Account] = set
 	}
-	return db.loadDiffLayer(newDiffLayer(parent, root, parent.stateID()+1, block, nodes, triestate.New(accounts, storages, incomplete)), r)
+	return db.loadDiffLayer(newDiffLayer(parent, root, parent.stateID()+1, block, nodes, triestate.New(accounts, storages)), r)
 }
 
 // journal implements the layer interface, marshaling the un-flushed trie nodes
@@ -316,9 +317,6 @@ func (dl *diffLayer) journal(w io.Writer) error {
 	storage := make([]journalStorage, 0, len(dl.states.Storages))
 	for addr, slots := range dl.states.Storages {
 		entry := journalStorage{Account: addr}
-		if _, ok := dl.states.Incomplete[addr]; ok {
-			entry.Incomplete = true
-		}
 		for slotHash, slot := range slots {
 			entry.Hashes = append(entry.Hashes, slotHash)
 			entry.Slots = append(entry.Slots, slot)