Details
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Bug
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Resolution: Fixed
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Major
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master
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None
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Untriaged
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Unknown
Description
ThreadSanitizer shows a data race in RocksDBKVStore::delVBucket and RocksDBKVStore::getStat:
WARNING: ThreadSanitizer: data race (pid=26106)
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Read of size 8 at 0x7d9000008008 by main thread (mutexes: write M6352, write M3354):
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#0 std::unique_ptr<KVRocksDB, std::default_delete<KVRocksDB> >::get() const /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/unique_ptr.h:305:16 (ep.so+0x0000001c62d7)
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#1 std::unique_ptr<KVRocksDB, std::default_delete<KVRocksDB> >::operator bool() const /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/unique_ptr.h:319 (ep.so+0x0000001c62d7)
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#2 RocksDBKVStore::getStat(char const*, unsigned long&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/rocksdb-kvstore/rocksdb-kvstore.cc:611 (ep.so+0x0000001c62d7)
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#3 KVBucket::getKVStoreStat(char const*, unsigned long&, KVBucketIface::KVSOption) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/kv_bucket.cc:2162:50 (ep.so+0x000000123579)
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#4 EventuallyPersistentEngine::doEngineStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/ep_engine.cc:2642:19 (ep.so+0x0000000b7f6e)
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#5 EventuallyPersistentEngine::getStats(void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/ep_engine.cc:3577:14 (ep.so+0x0000000bcbe3)
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#6 EvpGetStats(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/ep_engine.cc:316:35 (ep.so+0x0000000b061e)
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Previous write of size 8 at 0x7d9000008008 by thread T9 (mutexes: write M6361):
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#0 void std::swap<KVRocksDB*>(KVRocksDB*&, KVRocksDB*&) /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/move.h:186:11 (ep.so+0x0000001c5632)
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#1 std::unique_ptr<KVRocksDB, std::default_delete<KVRocksDB> >::reset(KVRocksDB*) /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/unique_ptr.h:342 (ep.so+0x0000001c5632)
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#2 RocksDBKVStore::delVBucket(unsigned short, unsigned long) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/rocksdb-kvstore/rocksdb-kvstore.cc:551 (ep.so+0x0000001c5632)
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#3 VBucketMemoryAndDiskDeletionTask::run() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/vbucketdeletiontask.cc:87:30 (ep.so+0x000000167681)
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#4 ExecutorThread::run() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/executorthread.cc:122:39 (ep.so+0x0000000f0480)
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#5 launch_executor_thread(void*) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/executorthread.cc:35:19 (ep.so+0x0000000efdf5)
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#6 CouchbaseThread::run() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/src/cb_pthreads.cc:59:9 (libplatform_so.so.0.1.0+0x000000007d32)
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#7 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+0x000000006ea8)
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Another data race in RocksDBKVStore::delVBucket and RocksDBKVStore::getCachePointers:
WARNING: ThreadSanitizer: data race (pid=26106)
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Write of size 8 at 0x7d9000008008 by thread T9 (mutexes: write M6361):
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#0 void std::swap<KVRocksDB*>(KVRocksDB*&, KVRocksDB*&) /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/move.h:186:11 (ep.so+0x0000001c5632)
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#1 std::unique_ptr<KVRocksDB, std::default_delete<KVRocksDB> >::reset(KVRocksDB*) /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/unique_ptr.h:342 (ep.so+0x0000001c5632)
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#2 RocksDBKVStore::delVBucket(unsigned short, unsigned long) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/rocksdb-kvstore/rocksdb-kvstore.cc:551 (ep.so+0x0000001c5632)
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#3 VBucketMemoryAndDiskDeletionTask::run() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/vbucketdeletiontask.cc:87:30 (ep.so+0x000000167681)
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#4 ExecutorThread::run() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/executorthread.cc:122:39 (ep.so+0x0000000f0480)
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#5 launch_executor_thread(void*) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/executorthread.cc:35:19 (ep.so+0x0000000efdf5)
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#6 CouchbaseThread::run() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/platform/src/cb_pthreads.cc:59:9 (libplatform_so.so.0.1.0+0x000000007d32)
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#7 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+0x000000006ea8)
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Previous read of size 8 at 0x7d9000008008 by main thread (mutexes: write M894102188324867984):
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#0 std::unique_ptr<KVRocksDB, std::default_delete<KVRocksDB> >::get() const /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/unique_ptr.h:305:16 (ep.so+0x0000001c6fb7)
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#1 std::unique_ptr<KVRocksDB, std::default_delete<KVRocksDB> >::operator bool() const /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/unique_ptr.h:319 (ep.so+0x0000001c6fb7)
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#2 RocksDBKVStore::getCachePointers() /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/rocksdb-kvstore/rocksdb-kvstore.cc:666 (ep.so+0x0000001c6fb7)
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#3 RocksDBKVStore::getStat(char const*, unsigned long&) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/rocksdb-kvstore/rocksdb-kvstore.cc:619:22 (ep.so+0x0000001c6448)
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#4 KVBucket::getKVStoreStat(char const*, unsigned long&, KVBucketIface::KVSOption) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/kv_bucket.cc:2157:50 (ep.so+0x000000123512)
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#5 EventuallyPersistentEngine::doEngineStats(void const*, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/ep_engine.cc:2642:19 (ep.so+0x0000000b7f6e)
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#6 EventuallyPersistentEngine::getStats(void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/ep_engine.cc:3577:14 (ep.so+0x0000000bcbe3)
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#7 EvpGetStats(engine_interface*, void const*, char const*, int, void (*)(char const*, unsigned short, char const*, unsigned int, void const*)) /home/couchbase/jenkins/workspace/kv_engine-threadsanitizer-master/kv_engine/engines/ep/src/ep_engine.cc:316:35 (ep.so+0x0000000b061e)
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