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/serverless/shard_split_donor_service.cpp:483: MISSING_LOCK 144327 Accessing "this->this->_abortReason" without holding lock "mongo::ShardSplitDonorService::DonorStateMachine._mutex". Elsewhere, "mongo::ShardSplitDonorService::DonorStateMachine._abortReason" is written to with "DonorStateMachine._mutex" held 5 out of 5 times.