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Merge bitcoin/bitcoin#25683: refactor: log nEvicted message in LimitOrphans then return void

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b4b657ba57 refactor: log `nEvicted` message in `LimitOrphans` then return void (chinggg)

Pull request description:

  Fix https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=49347

  LimitOrphans() can log expired tx and it should log evicted tx as well instead of returning the `nEvicted` number for caller to print the message.
  Since `LimitOrphans()` now returns void, the redundant assertion check in fuzz test is also removed.

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Tree-SHA512: 18c41702321b0e59812590cd389f3163831d431f4ebdc3b3e1e0698496a6bdbac52288f28f779237a58813c6717da1a35e8933d509822978ff726c1b13cfc778
This commit is contained in:
MacroFake 2022-07-29 16:16:23 +02:00
commit b1c8ea45c9
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4 changed files with 5 additions and 10 deletions
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5
src/net_processing.cpp
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@ -3631,10 +3631,7 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type,
// DoS prevention: do not allow m_orphanage to grow unbounded (see CVE-2012-3789)
unsigned int nMaxOrphanTx = (unsigned int)std::max((int64_t)0, gArgs.GetIntArg("-maxorphantx", DEFAULT_MAX_ORPHAN_TRANSACTIONS));
unsigned int nEvicted = m_orphanage.LimitOrphans(nMaxOrphanTx);
if (nEvicted > 0) {
LogPrint(BCLog::MEMPOOL, "orphanage overflow, removed %u tx\n", nEvicted);
}
m_orphanage.LimitOrphans(nMaxOrphanTx);
} else {
LogPrint(BCLog::MEMPOOL, "not keeping orphan with rejected parents %s\n",tx.GetHash().ToString());
// We will continue to reject this tx since it has rejected

4
src/test/fuzz/txorphan.cpp
View file

@ -138,10 +138,8 @@ FUZZ_TARGET_INIT(txorphan, initialize_orphanage)
[&] {
// test mocktime and expiry
SetMockTime(ConsumeTime(fuzzed_data_provider));
auto size_before = orphanage.Size();
auto limit = fuzzed_data_provider.ConsumeIntegral<unsigned int>();
auto n_evicted = WITH_LOCK(g_cs_orphans, return orphanage.LimitOrphans(limit));
Assert(size_before - n_evicted <= limit);
WITH_LOCK(g_cs_orphans, orphanage.LimitOrphans(limit));
Assert(orphanage.Size() <= limit);
});
}

4
src/txorphanage.cpp
View file

@ -102,7 +102,7 @@ void TxOrphanage::EraseForPeer(NodeId peer)
if (nErased > 0) LogPrint(BCLog::MEMPOOL, "Erased %d orphan tx from peer=%d\n", nErased, peer);
}
unsigned int TxOrphanage::LimitOrphans(unsigned int max_orphans)
void TxOrphanage::LimitOrphans(unsigned int max_orphans)
{
AssertLockHeld(g_cs_orphans);
@ -135,7 +135,7 @@ unsigned int TxOrphanage::LimitOrphans(unsigned int max_orphans)
EraseTx(m_orphan_list[randompos]->first);
++nEvicted;
}
return nEvicted;
if (nEvicted > 0) LogPrint(BCLog::MEMPOOL, "orphanage overflow, removed %u tx\n", nEvicted);
}
void TxOrphanage::AddChildrenToWorkSet(const CTransaction& tx, std::set<uint256>& orphan_work_set) const

2
src/txorphanage.h
View file

@ -41,7 +41,7 @@ public:
void EraseForBlock(const CBlock& block) LOCKS_EXCLUDED(::g_cs_orphans);
/** Limit the orphanage to the given maximum */
unsigned int LimitOrphans(unsigned int max_orphans) EXCLUSIVE_LOCKS_REQUIRED(g_cs_orphans);
void LimitOrphans(unsigned int max_orphans) EXCLUSIVE_LOCKS_REQUIRED(g_cs_orphans);
/** Add any orphans that list a particular tx as a parent into a peer's work set
* (ie orphans that may have found their final missing parent, and so should be reconsidered for the mempool) */