Value not atomically updated

The result of the update will be determined by the interleaving of thread execution. Non-atomic update of a concurrently shared value
/src/mongo/db/s/migration_chunk_cloner_source.cpp:673: ATOMICITY 152771 Assuming "lk" is locked since it is unlocked without prior lock in this function.
/src/mongo/db/s/migration_chunk_cloner_source.cpp:693: ATOMICITY 152771 Assigning data that might be protected by the lock to "execState".
/src/mongo/db/s/migration_chunk_cloner_source.cpp:698: ATOMICITY 152771 Unlocking "lk._M_device". "execState" might now be unreliable because other threads can now change the data that it depends on.
/src/mongo/db/s/migration_chunk_cloner_source.cpp:707: ATOMICITY 152771 Unlocking "lk". "execState" might now be unreliable because other threads can now change the data that it depends on.
/src/mongo/db/s/migration_chunk_cloner_source.cpp:724: ATOMICITY 152771 Locking "this->_mutex" again.
/src/mongo/db/s/migration_chunk_cloner_source.cpp:725: ATOMICITY 152771 Using an unreliable value of "execState" inside the second locked section. If the data that "execState" depends on was changed by another thread, this use might be incorrect.