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
/data/mci/261f65657bd114359a8e3a064d6e450e/bazel_cache/54c751a1c930d7b7fb2afe7fb4a68167/execroot/_main/src/mongo/db/s/migration_chunk_cloner_source.cpp:429: MISSING_LOCK 146257 Accessing "this->_state" without holding lock "mongo::MigrationChunkClonerSource._mutex". Elsewhere, "mongo::MigrationChunkClonerSource._state" is written to with "MigrationChunkClonerSource._mutex" held 2 out of 2 times (2 of these accesses strongly imply that it is necessary).