message: fuzz: Limit max ops in tx_pool fuzz targets
diff: @@ -112,6 +112,10 @@ void MockTime(FuzzedDataProvider& fuzzed_data_provider, const CChainState& chain
  FUZZ_TARGET_INIT(tx_pool_standard, initialize_tx_pool)
  {
  + // Pick an arbitrary upper bound to limit the runtime and avoid timeouts on
  + // inputs.
  + int limit_max_ops{300};
  +
  FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
  const auto& node = g_setup->m_node;
  auto& chainstate = node.chainman->ActiveChainstate();
  @@ -142,7 +146,7 @@ FUZZ_TARGET_INIT(tx_pool_standard, initialize_tx_pool)
  return c.out.nValue;
  };
  - while (fuzzed_data_provider.ConsumeBool()) {
  + while (--limit_max_ops >= 0 && fuzzed_data_provider.ConsumeBool()) {
  {
  // Total supply is the mempool fee + all outpoints
  CAmount supply_now{WITH_LOCK(tx_pool.cs, return tx_pool.GetTotalFee())};
  @@ -285,6 +289,10 @@ FUZZ_TARGET_INIT(tx_pool_standard, initialize_tx_pool)
  FUZZ_TARGET_INIT(tx_pool, initialize_tx_pool)
  {
  + // Pick an arbitrary upper bound to limit the runtime and avoid timeouts on
  + // inputs.
  + int limit_max_ops{300};
  +
  FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
  const auto& node = g_setup->m_node;
  auto& chainstate = node.chainman->ActiveChainstate();
  @@ -305,7 +313,7 @@ FUZZ_TARGET_INIT(tx_pool, initialize_tx_pool)
  CTxMemPool tx_pool_{/* estimator */ nullptr, /* check_ratio */ 1};
  MockedTxPool& tx_pool = *static_cast<MockedTxPool*>(&tx_pool_);
  - while (fuzzed_data_provider.ConsumeBool()) {
  + while (--limit_max_ops >= 0 && fuzzed_data_provider.ConsumeBool()) {
  const auto mut_tx = ConsumeTransaction(fuzzed_data_provider, txids);
  if (fuzzed_data_provider.ConsumeBool()) {
  