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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server440 file guides

Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.

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1// Copyright (c) 2020-present The Bitcoin Core developers
2// Distributed under the MIT software license, see the accompanying
3// file COPYING or http://www.opensource.org/licenses/mit-license.php.
4
5#include <node/mempool_args.h>
6#include <policy/rbf.h>
7#include <primitives/transaction.h>
8#include <sync.h>
9#include <test/fuzz/FuzzedDataProvider.h>
10#include <test/fuzz/fuzz.h>
11#include <test/fuzz/util.h>
12#include <test/fuzz/util/mempool.h>
13#include <test/util/setup_common.h>
14#include <test/util/time.h>
15#include <test/util/txmempool.h>
16#include <txmempool.h>
17#include <util/check.h>
18#include <util/translation.h>
19
20#include <cstdint>
21#include <optional>
22#include <string>
23#include <vector>
24
25namespace {
26const BasicTestingSetup* g_setup;
27} // namespace
28
29const int NUM_ITERS = 10000;
30
31std::vector<COutPoint> g_outpoints;
32
33void initialize_rbf()
34{
35    static const auto testing_setup = MakeNoLogFileContext<>();
36    g_setup = testing_setup.get();
37}
38
39void initialize_package_rbf()
40{
41    static const auto testing_setup = MakeNoLogFileContext<>();
42    g_setup = testing_setup.get();
43
44    // Create a fixed set of unique "UTXOs" to source parents from
45    // to avoid fuzzer giving circular references
46    for (int i = 0; i < NUM_ITERS; ++i) {
47        g_outpoints.emplace_back();
48        g_outpoints.back().n = i;
49    }
50
51}
52
53FUZZ_TARGET(rbf, .init = initialize_rbf)
54{
55    SeedRandomStateForTest(SeedRand::ZEROS);
56    FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
57    FakeNodeClock clock{ConsumeTime(fuzzed_data_provider)};
58    std::optional<CMutableTransaction> mtx = ConsumeDeserializable<CMutableTransaction>(fuzzed_data_provider, TX_WITH_WITNESS);
59    if (!mtx) {
60        return;
61    }
62
63    bilingual_str error;
64    CTxMemPool pool{MemPoolOptionsForTest(g_setup->m_node), error};
65    Assert(error.empty());
66
67    LIMITED_WHILE (fuzzed_data_provider.ConsumeBool(), NUM_ITERS) {
68        const std::optional<CMutableTransaction> another_mtx = ConsumeDeserializable<CMutableTransaction>(fuzzed_data_provider, TX_WITH_WITNESS);
69        if (!another_mtx) {
70            break;
71        }
72        const CTransaction another_tx{*another_mtx};
73        if (fuzzed_data_provider.ConsumeBool() && !mtx->vin.empty()) {
74            mtx->vin[0].prevout = COutPoint{another_tx.GetHash(), 0};
75        }
76        LOCK2(cs_main, pool.cs);
77        if (!pool.GetIter(another_tx.GetHash())) {
78            TryAddToMempool(pool, ConsumeTxMemPoolEntry(fuzzed_data_provider, another_tx));
79        }
80    }
81    const CTransaction tx{*mtx};
82    if (fuzzed_data_provider.ConsumeBool()) {
83        LOCK2(cs_main, pool.cs);
84        if (!pool.GetIter(tx.GetHash())) {
85            TryAddToMempool(pool, ConsumeTxMemPoolEntry(fuzzed_data_provider, tx));
86        }
87    }
88    {
89        LOCK(pool.cs);
90        (void)IsRBFOptIn(tx, pool);
91    }
92}
93
94FUZZ_TARGET(package_rbf, .init = initialize_package_rbf)
95{
96    SeedRandomStateForTest(SeedRand::ZEROS);
97    FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
98    FakeNodeClock clock{ConsumeTime(fuzzed_data_provider)};
99
100    // "Real" virtual size is not important for this test since ConsumeTxMemPoolEntry generates its own virtual size values
101    // so we construct small transactions for performance reasons. Child simply needs an input for later to perhaps connect to parent.
102    CMutableTransaction child;
103    child.vin.resize(1);
104
105    bilingual_str error;
106    CTxMemPool pool{MemPoolOptionsForTest(g_setup->m_node), error};
107    Assert(error.empty());
108
109    // Add a bunch of parent-child pairs to the mempool, and remember them.
110    std::vector<CTransaction> mempool_txs;
111    uint32_t iter{0};
112
113    // Keep track of the total vsize of CTxMemPoolEntry's being added to the mempool to avoid overflow
114    // Add replacement_vsize since this is added to new diagram during RBF check
115    std::optional<CMutableTransaction> replacement_tx = ConsumeDeserializable<CMutableTransaction>(fuzzed_data_provider, TX_WITH_WITNESS);
116    if (!replacement_tx) {
117        return;
118    }
119    replacement_tx->vin.resize(1);
120    replacement_tx->vin[0].prevout = g_outpoints.at(iter++);
121    CTransaction replacement_tx_final{*replacement_tx};
122    auto replacement_entry = ConsumeTxMemPoolEntry(fuzzed_data_provider, replacement_tx_final);
123    int32_t replacement_weight = replacement_entry.GetAdjustedWeight();
124    // Ensure that we don't hit FeeFrac limits, as we store TxGraph entries in terms of FeePerWeight
125    int64_t running_vsize_total{replacement_entry.GetTxSize()};
126
127    LOCK2(cs_main, pool.cs);
128
129    while (fuzzed_data_provider.ConsumeBool()) {
130        if (iter >= NUM_ITERS) break;
131
132        // Make sure txns only have one input, and that a unique input is given to avoid circular references
133        CMutableTransaction parent;
134        parent.vin.resize(1);
135        parent.vin[0].prevout = g_outpoints.at(iter++);
136        parent.vout.emplace_back(0, CScript());
137
138        mempool_txs.emplace_back(parent);
139        const auto parent_entry = ConsumeTxMemPoolEntry(fuzzed_data_provider, mempool_txs.back());
140        running_vsize_total += parent_entry.GetTxSize();
141        if (running_vsize_total * WITNESS_SCALE_FACTOR > std::numeric_limits<int32_t>::max()) {
142            // We aren't adding this final tx to mempool, so we don't want to conflict with it
143            mempool_txs.pop_back();
144            break;
145        }
146        assert(!pool.GetIter(parent_entry.GetTx().GetHash()));
147        TryAddToMempool(pool, parent_entry);
148
149        // It's possible that adding this to the mempool failed due to cluster
150        // size limits; if so bail out.
151        if(!pool.GetIter(parent_entry.GetTx().GetHash())) {
152            mempool_txs.pop_back();
153            continue;
154        }
155
156        child.vin[0].prevout = COutPoint{mempool_txs.back().GetHash(), 0};
157        mempool_txs.emplace_back(child);
158        const auto child_entry = ConsumeTxMemPoolEntry(fuzzed_data_provider, mempool_txs.back());
159        running_vsize_total += child_entry.GetTxSize();
160        if (running_vsize_total * WITNESS_SCALE_FACTOR > std::numeric_limits<int32_t>::max()) {
161            // We aren't adding this final tx to mempool, so we don't want to conflict with it
162            mempool_txs.pop_back();
163            break;
164        }
165        if (!pool.GetIter(child_entry.GetTx().GetHash())) {
166            TryAddToMempool(pool, child_entry);
167            // Adding this transaction to the mempool may fail due to cluster
168            // size limits; if so bail out.
169            if(!pool.GetIter(child_entry.GetTx().GetHash())) {
170                mempool_txs.pop_back();
171                continue;
172            }
173        }
174
175        if (fuzzed_data_provider.ConsumeBool()) {
176            pool.PrioritiseTransaction(mempool_txs.back().GetHash(), fuzzed_data_provider.ConsumeIntegralInRange<int32_t>(-100000, 100000));
177        }
178    }
179
180    // Pick some transactions at random to be the direct conflicts
181    CTxMemPool::setEntries direct_conflicts;
182    for (auto& tx : mempool_txs) {
183        if (fuzzed_data_provider.ConsumeBool() && pool.GetIter(tx.GetHash())) {
184            direct_conflicts.insert(*pool.GetIter(tx.GetHash()));
185        }
186    }
187
188    // Calculate all conflicts:
189    CTxMemPool::setEntries all_conflicts;
190    for (auto& txiter : direct_conflicts) {
191        pool.CalculateDescendants(txiter, all_conflicts);
192    }
193
194    CAmount replacement_fees = ConsumeMoney(fuzzed_data_provider);
195    auto changeset = pool.GetChangeSet();
196    for (auto& txiter : all_conflicts) {
197        changeset->StageRemoval(txiter);
198    }
199    changeset->StageAddition(replacement_entry.GetSharedTx(), replacement_fees,
200            replacement_entry.GetTime().count(), replacement_entry.GetHeight(),
201            replacement_entry.GetSequence(), replacement_entry.GetSpendsCoinbase(),
202            replacement_entry.GetSigOpCost(), replacement_entry.GetLockPoints());
203    // Calculate the chunks for a replacement.
204    auto calc_results{changeset->CalculateChunksForRBF()};
205
206    if (calc_results.has_value()) {
207        // Sanity checks on the chunks.
208
209        // Feerates are monotonically decreasing.
210        FeeFrac first_sum;
211        for (size_t i = 0; i < calc_results->first.size(); ++i) {
212            first_sum += calc_results->first[i];
213            if (i) assert(ByRatio{calc_results->first[i - 1]} >= ByRatio{calc_results->first[i]});
214        }
215        FeeFrac second_sum;
216        for (size_t i = 0; i < calc_results->second.size(); ++i) {
217            second_sum += calc_results->second[i];
218            if (i) assert(ByRatio{calc_results->second[i - 1]} >= ByRatio{calc_results->second[i]});
219        }
220
221        FeeFrac replaced;
222        for (auto txiter : all_conflicts) {
223            replaced.fee += txiter->GetModifiedFee();
224            replaced.size += txiter->GetAdjustedWeight();
225        }
226        // The total fee & size of the new diagram minus replaced fee & size should be the total
227        // fee & size of the old diagram minus replacement fee & size.
228        assert((first_sum - replaced) == (second_sum - FeeFrac{replacement_fees, replacement_weight}));
229    }
230
231    // If internals report error, wrapper should too
232    auto err_tuple{ImprovesFeerateDiagram(*changeset)};
233    if (!calc_results.has_value()) {
234         assert(err_tuple.value().first == DiagramCheckError::UNCALCULABLE);
235    } else {
236        // Diagram check succeeded
237        auto old_sum = std::accumulate(calc_results->first.begin(), calc_results->first.end(), FeeFrac{});
238        auto new_sum = std::accumulate(calc_results->second.begin(), calc_results->second.end(), FeeFrac{});
239        if (!err_tuple.has_value()) {
240            // New diagram's final fee should always match or exceed old diagram's
241            assert(old_sum.fee <= new_sum.fee);
242        } else if (old_sum.fee > new_sum.fee) {
243            // Or it failed, and if old diagram had higher fees, it should be a failure
244            assert(err_tuple.value().first == DiagramCheckError::FAILURE);
245        }
246    }
247}
248

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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