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fix: double lock of deterministicMNManager->cs (#5637)
## Issue being fixed or feature implemented
fix: double lock of deterministicMNManager->cs
Logs:
```
node1 2023-10-21T16:46:03.990302Z (mocktime: 2014-12-04T17:33:19Z) [httpworker.1] DOUBLE LOCK DETECTED
node1 2023-10-21T16:46:03.990322Z (mocktime: 2014-12-04T17:33:19Z) [httpworker.1] Lock order:
node1 2023-10-21T16:46:03.990339Z (mocktime: 2014-12-04T17:33:19Z) [httpworker.1] 'cs_main' in miner.cpp:129 (in thread 'httpworker.1')
node1 2023-10-21T16:46:03.990353Z (mocktime: 2014-12-04T17:33:19Z) [httpworker.1] 'm_mempool.cs' in miner.cpp:129 (in thread 'httpworker.1')
node1 2023-10-21T16:46:03.990366Z (mocktime: 2014-12-04T17:33:19Z) [httpworker.1] (*) 'deterministicMNManager->cs' in evo/cbtx.cpp:114 (in thread 'httpworker.1')
node1 2023-10-21T16:46:03.990439Z (mocktime: 2014-12-04T17:33:19Z) [httpworker.1] (*) 'cs' in ./evo/deterministicmns.h:614 (in thread 'httpworker.1')
node1 2023-10-21T16:46:04.003619Z (mocktime: 2014-12-04T17:33:19Z) [httpworker.1] Posix Signal: Aborted
No debug information available for stacktrace. You should add debug information and then run:
dashd -printcrashinfo=bvcgc43iinzgc43ijfxgm3ybaacwiyltnbsbkudponuxqictnftw4ylmhiqecytpoj2gkzaphcbzaaaaaaaaayeurhimekiaaav6ldwqyiuqaafwsoe5bqrjaaahz6eh2dbcsaaakhhzaaaaaaaaanreseaaaaaaacgguliaaaaaaadyauwqaaaaaaacp3daaaaaaaaamxigcaaaaaaablpulyaaaaaaadovy3yaaaaaaahj7vbaaaaaaaadnbsdaaaaaaaaaa======
```
Part of backtrace:
```
#9 UniqueLock<AnnotatedMixin<std::mutex>, std::unique_lock<std::mutex> >::UniqueLock (fTry=false, nLine=615, pszFile=0x55a9f71a3710 "./evo/deterministicmns.h",
pszName=0x55a9f719caff "cs", mutexIn=..., this=0x7f7e1e71b250) at ./sync.h:164
#10 CDeterministicMNManager::GetListForBlock (this=0x55a9f84d06b0, pindex=0x7f7db03621c0) at ./evo/deterministicmns.h:615
#11 0x000055a9f6612258 in llmq::utils::ComputeQuorumMembersByQuarterRotation (pCycleQuorumBaseBlockIndex=0x7f7db03a6930, llmqParams=...) at /usr/include/c++/12/bits/unique_ptr.h:191
#12 llmq::utils::GetAllQuorumMembers (llmqType=<optimized out>, pQuorumBaseBlockIndex=0x7f7db0359bc0, reset_cache=reset_cache@entry=false) at llmq/utils.cpp:150
#13 0x000055a9f694d957 in CDeterministicMNManager::HandleQuorumCommitment (qc=..., pQuorumBaseBlockIndex=<optimized out>, mnList=..., debugLogs=debugLogs@entry=false)
at evo/deterministicmns.cpp:989
#14 0x000055a9f695c455 in CDeterministicMNManager::BuildNewListFromBlock (this=<optimized out>, block=..., pindexPrev=pindexPrev@entry=0x7f7db03c1ac0, state=..., view=...,
mnListRet=..., debugLogs=false) at evo/deterministicmns.cpp:918
#15 0x000055a9f692e7cd in CalcCbTxMerkleRootMNList (block=..., pindexPrev=pindexPrev@entry=0x7f7db03c1ac0, merkleRootRet=..., state=..., view=...)
at /usr/include/c++/12/bits/unique_ptr.h:191
#16 0x000055a9f6a352ed in BlockAssembler::CreateNewBlock (this=this@entry=0x7f7e1e71f0b0, scriptPubKeyIn=...) at ./validation.h:649
#17 0x000055a9f6771c49 in generateBlocks (chainman=..., mempool=..., evodb=..., llmq_ctx=..., coinbase_script=..., nGenerate=10, nMaxTries=<optimized out>) at rpc/mining.cpp:167
#18 0x000055a9f677a496 in generatetoaddress (request=...) at /usr/include/c++/12/bits/unique_ptr.h:191
#19 0x000055a9f671ea02 in CRPCCommand::CRPCCommand(char const*, char const*, UniValue (*)(JSONRPCRequest const&), std::initializer_list<char const*>)::{lambda(JSONRPCRequest const&, UniValue&, bool)#1}::operator()(JSONRPCRequest const&, UniValue&, bool) const (__closure=<optimized out>, result=..., request=...) at ./rpc/server.h:120
```
## What was done?
`CDeterministicMNManager::BuildNewListFromBlock` doesn't require `cs`
lock anymore
## How Has This Been Tested?
Run unit/functional tests
## Breaking Changes
N/A
## Checklist:
- [x] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have added or updated relevant unit/integration/functional/e2e
tests
- [ ] I have made corresponding changes to the documentation
- [x] I have assigned this pull request to a milestone
---------
Co-authored-by: UdjinM6 <UdjinM6@users.noreply.github.com>
Co-authored-by: pasta <pasta@dashboost.org>
This commit is contained in:
Konstantin Akimov
GitHub
parent
c51cec606d
commit
343db5ffb5
@ -111,12 +111,10 @@ bool CheckCbTxMerkleRoots(const CBlock& block, const CBlockIndex* pindex, const
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bool CalcCbTxMerkleRootMNList(const CBlock& block, const CBlockIndex* pindexPrev, uint256& merkleRootRet, BlockValidationState& state, const CCoinsViewCache& view)
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{
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LOCK(deterministicMNManager->cs);
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try {
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static int64_t nTimeDMN = 0;
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static int64_t nTimeSMNL = 0;
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static int64_t nTimeMerkle = 0;
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static std::atomic<int64_t> nTimeDMN = 0;
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static std::atomic<int64_t> nTimeSMNL = 0;
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static std::atomic<int64_t> nTimeMerkle = 0;
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int64_t nTime1 = GetTimeMicros();
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@ -134,10 +132,12 @@ bool CalcCbTxMerkleRootMNList(const CBlock& block, const CBlockIndex* pindexPrev
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int64_t nTime3 = GetTimeMicros(); nTimeSMNL += nTime3 - nTime2;
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LogPrint(BCLog::BENCHMARK, " - CSimplifiedMNList: %.2fms [%.2fs]\n", 0.001 * (nTime3 - nTime2), nTimeSMNL * 0.000001);
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static CSimplifiedMNList smlCached;
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static uint256 merkleRootCached;
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static bool mutatedCached{false};
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static Mutex cached_mutex;
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static CSimplifiedMNList smlCached GUARDED_BY(cached_mutex);
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static uint256 merkleRootCached GUARDED_BY(cached_mutex);
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static bool mutatedCached GUARDED_BY(cached_mutex) {false};
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LOCK(cached_mutex);
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if (sml == smlCached) {
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merkleRootRet = merkleRootCached;
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if (mutatedCached) {
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@ -613,8 +613,6 @@ bool CDeterministicMNManager::ProcessBlock(const CBlock& block, const CBlockInde
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int nHeight = pindex->nHeight;
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try {
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LOCK(cs);
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if (!BuildNewListFromBlock(block, pindex->pprev, state, view, newList, true)) {
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// pass the state returned by the function above
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return false;
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@ -626,6 +624,8 @@ bool CDeterministicMNManager::ProcessBlock(const CBlock& block, const CBlockInde
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newList.SetBlockHash(pindex->GetBlockHash());
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LOCK(cs);
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oldList = GetListForBlockInternal(pindex->pprev);
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diff = oldList.BuildDiff(newList);
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@ -708,11 +708,9 @@ void CDeterministicMNManager::UpdatedBlockTip(const CBlockIndex* pindex)
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bool CDeterministicMNManager::BuildNewListFromBlock(const CBlock& block, const CBlockIndex* pindexPrev, BlockValidationState& state, const CCoinsViewCache& view, CDeterministicMNList& mnListRet, bool debugLogs)
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{
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AssertLockHeld(cs);
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int nHeight = pindexPrev->nHeight + 1;
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CDeterministicMNList oldList = GetListForBlockInternal(pindexPrev);
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CDeterministicMNList oldList = GetListForBlock(pindexPrev);
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CDeterministicMNList newList = oldList;
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newList.SetBlockHash(uint256()); // we can't know the final block hash, so better not return a (invalid) block hash
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newList.SetHeight(nHeight);
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@ -574,10 +574,8 @@ class CDeterministicMNManager
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static constexpr int DISK_SNAPSHOTS = llmq_max_blocks() / DISK_SNAPSHOT_PERIOD + 1;
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static constexpr int LIST_DIFFS_CACHE_SIZE = DISK_SNAPSHOT_PERIOD * DISK_SNAPSHOTS;
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public:
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Mutex cs;
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private:
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Mutex cs;
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Mutex cs_cleanup;
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// We have performed CleanupCache() on this height.
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int did_cleanup GUARDED_BY(cs_cleanup) {0};
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@ -607,7 +605,7 @@ public:
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// the returned list will not contain the correct block hash (we can't know it yet as the coinbase TX is not updated yet)
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bool BuildNewListFromBlock(const CBlock& block, const CBlockIndex* pindexPrev, BlockValidationState& state, const CCoinsViewCache& view,
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CDeterministicMNList& mnListRet, bool debugLogs) EXCLUSIVE_LOCKS_REQUIRED(cs);
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CDeterministicMNList& mnListRet, bool debugLogs) LOCKS_EXCLUDED(cs);
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static void HandleQuorumCommitment(const llmq::CFinalCommitment& qc, const CBlockIndex* pQuorumBaseBlockIndex, CDeterministicMNList& mnList, bool debugLogs);
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CDeterministicMNList GetListForBlock(const CBlockIndex* pindex) LOCKS_EXCLUDED(cs) {
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