Data race condition
The value of the shared data will be determined by the interleaving of thread execution. Thread shared data is accessed without holding an appropriate lock, possibly causing a race condition
/src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp:1392: MISSING_LOCK 151199 Accessing "this->_wtBackup.cursor" without holding lock "mongo::WiredTigerBackup.wtBackupCursorMutex". Elsewhere, "mongo::WiredTigerBackup.cursor" is written to with "WiredTigerBackup.wtBackupCursorMutex" held 4 out of 4 times.