Details
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Bug
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Resolution: Fixed
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Major
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5.5.0
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None
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Untriaged
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Unknown
Description
Data race observed in the following location: http://cv.jenkins.couchbase.com/job/kv_engine-threadsanitizer-master/5497/console
WARNING: ThreadSanitizer: data race (pid=5300)
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Write of size 8 at 0x7d7800025ac8 by thread T16 (mutexes: write M2335):
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#0 operator delete(void*) <null> (memcached+0x0000004c9a31)
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#1 rocksdb::Version::Unref() /home/couchbase/jenkins/workspace/cbdeps-platform-build/deps/packages/build/rocksdb/rocksdb-prefix/src/rocksdb/db/version_set.cc:1702 (librocksdb.so.5.8+0x00000033e25b)
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Previous read of size 8 at 0x7d7800025ac8 by thread T11:
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#0 SeqnoComparator::Compare(rocksdb::Slice const&, rocksdb::Slice const&) const /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/rocksdb-kvstore/rocksdb-kvstore.h:73:29 (ep.so+0x0000001dc89d)
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#1 GetNextFile /home/couchbase/jenkins/workspace/cbdeps-platform-build/deps/packages/build/rocksdb/rocksdb-prefix/src/rocksdb/db/version_set.cc:155 (librocksdb.so.5.8+0x00000033cd73)
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#2 rocksdb::Version::Get(rocksdb::ReadOptions const&, rocksdb::LookupKey const&, rocksdb::PinnableSlice*, rocksdb::Status*, rocksdb::MergeContext*, rocksdb::RangeDelAggregator*, bool*, bool*, unsigned long*) /home/couchbase/jenkins/workspace/cbdeps-platform-build/deps/packages/build/rocksdb/rocksdb-prefix/src/rocksdb/db/version_set.cc:995 (librocksdb.so.5.8+0x00000033cd73)
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#3 RocksDBKVStore::RocksDBKVStore(KVStoreConfig&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/rocksdb-kvstore/rocksdb-kvstore.cc:276:13 (ep.so+0x0000001ce23b)
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#4 __unique_if<RocksDBKVStore>::__unique_single std::make_unique<RocksDBKVStore, KVStoreConfig&>(KVStoreConfig&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/include/platform/make_unique.h:45:37 (ep.so+0x00000010d343)
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#5 KVStoreFactory::create(KVStoreConfig&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/kvstore.cc:88 (ep.so+0x00000010d343)
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#6 KVShard::KVShard(unsigned short, KVBucket&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/kvshard.cc:43:23 (ep.so+0x000000134c80)
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#7 __unique_if<KVShard>::__unique_single std::make_unique<KVShard, unsigned long&, KVBucket&>(unsigned long&, KVBucket&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/include/platform/make_unique.h:45:37 (ep.so+0x000000172a4b)
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#8 VBucketMap::VBucketMap(Configuration&, KVBucket&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/vbucketmap.cc:32 (ep.so+0x000000172a4b)
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#9 KVBucket::KVBucket(EventuallyPersistentEngine&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/kv_bucket.cc:226:7 (ep.so+0x0000001193f3)
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#10 EPBucket::EPBucket(EventuallyPersistentEngine&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/ep_bucket.cc:169:7 (ep.so+0x0000000a4085)
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#11 __unique_if<EPBucket>::__unique_single std::make_unique<EPBucket, EventuallyPersistentEngine&>(EventuallyPersistentEngine&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/include/platform/make_unique.h:45:37 (ep.so+0x0000000c39bf)
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#12 EventuallyPersistentEngine::makeBucket(Configuration&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/ep_engine.cc:5390 (ep.so+0x0000000c39bf)
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#13 EventuallyPersistentEngine::initialize(char const*) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/ep_engine.cc:1950:16 (ep.so+0x0000000c3533)
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#14 EvpInitialize(gsl::not_null<engine_interface*>, char const*) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/ep_engine.cc:149:35 (ep.so+0x0000000bcf3d)
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#15 EWB_Engine::initialize(gsl::not_null<engine_interface*>, char const*) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ewouldblock_engine/ewouldblock_engine.cc:301:33 (ewouldblock_engine.so+0x000000009fd6)
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#16 CreateBucketThread::create() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/daemon/memcached.cc:2019:22 (memcached+0x0000004d0c5b)
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#17 CreateBucketThread::run() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/daemon/memcached.cc:2078:5 (memcached+0x0000004d1351)
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#18 Couchbase::Thread::thread_entry() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/src/thread.cc:45:5 (libplatform_so.so.0.1.0+0x000000018882)
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#19 Couchbase::StartThreadDelegator::run(Couchbase::Thread&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/src/thread.cc:59:16 (libplatform_so.so.0.1.0+0x000000018b05)
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#20 task_thread_main(void*) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/src/thread.cc:65 (libplatform_so.so.0.1.0+0x000000018b05)
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#21 CouchbaseThread::run() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/src/cb_pthreads.cc:59:9 (libplatform_so.so.0.1.0+0x000000009532)
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#22 platform_thread_wrap(void*) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/src/cb_pthreads.cc:72:14 (libplatform_so.so.0.1.0+0x0000000086a8)
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Mutex M2335 (0x7d7c0000f2b0) created at:
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#0 pthread_mutex_init <null> (memcached+0x00000043d39a)
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#1 rocksdb::port::Mutex::Mutex(bool) /home/couchbase/jenkins/workspace/cbdeps-platform-build/deps/packages/build/rocksdb/rocksdb-prefix/src/rocksdb/port/port_posix.cc:41 (librocksdb.so.5.8+0x0000003b8078)
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#2 RocksDBKVStore::RocksDBKVStore(KVStoreConfig&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/rocksdb-kvstore/rocksdb-kvstore.cc:271:5 (ep.so+0x0000001ce178)
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#3 __unique_if<RocksDBKVStore>::__unique_single std::make_unique<RocksDBKVStore, KVStoreConfig&>(KVStoreConfig&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/include/platform/make_unique.h:45:37 (ep.so+0x00000010d343)
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#4 KVStoreFactory::create(KVStoreConfig&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/kvstore.cc:88 (ep.so+0x00000010d343)
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#5 KVShard::KVShard(unsigned short, KVBucket&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/kvshard.cc:43:23 (ep.so+0x000000134c80)
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#6 __unique_if<KVShard>::__unique_single std::make_unique<KVShard, unsigned long&, KVBucket&>(unsigned long&, KVBucket&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/include/platform/make_unique.h:45:37 (ep.so+0x000000172a4b)
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#7 VBucketMap::VBucketMap(Configuration&, KVBucket&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/vbucketmap.cc:32 (ep.so+0x000000172a4b)
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#8 KVBucket::KVBucket(EventuallyPersistentEngine&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/kv_bucket.cc:226:7 (ep.so+0x0000001193f3)
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#9 EPBucket::EPBucket(EventuallyPersistentEngine&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/ep_bucket.cc:169:7 (ep.so+0x0000000a4085)
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#10 __unique_if<EPBucket>::__unique_single std::make_unique<EPBucket, EventuallyPersistentEngine&>(EventuallyPersistentEngine&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/include/platform/make_unique.h:45:37 (ep.so+0x0000000c39bf)
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#11 EventuallyPersistentEngine::makeBucket(Configuration&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/ep_engine.cc:5390 (ep.so+0x0000000c39bf)
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#12 EventuallyPersistentEngine::initialize(char const*) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/ep_engine.cc:1950:16 (ep.so+0x0000000c3533)
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#13 EvpInitialize(gsl::not_null<engine_interface*>, char const*) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/ep_engine.cc:149:35 (ep.so+0x0000000bcf3d)
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#14 EWB_Engine::initialize(gsl::not_null<engine_interface*>, char const*) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ewouldblock_engine/ewouldblock_engine.cc:301:33 (ewouldblock_engine.so+0x000000009fd6)
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#15 CreateBucketThread::create() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/daemon/memcached.cc:2019:22 (memcached+0x0000004d0c5b)
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#16 CreateBucketThread::run() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/daemon/memcached.cc:2078:5 (memcached+0x0000004d1351)
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#17 Couchbase::Thread::thread_entry() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/src/thread.cc:45:5 (libplatform_so.so.0.1.0+0x000000018882)
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#18 Couchbase::StartThreadDelegator::run(Couchbase::Thread&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/src/thread.cc:59:16 (libplatform_so.so.0.1.0+0x000000018b05)
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#19 task_thread_main(void*) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/src/thread.cc:65 (libplatform_so.so.0.1.0+0x000000018b05)
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#20 CouchbaseThread::run() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/src/cb_pthreads.cc:59:9 (libplatform_so.so.0.1.0+0x000000009532)
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#21 platform_thread_wrap(void*) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/src/cb_pthreads.cc:72:14 (libplatform_so.so.0.1.0+0x0000000086a8)
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