diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index ca09d81b08..55cac186dc 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -9743,6 +9743,8 @@ XLogReportParameters(void)
 			XLogFlush(recptr);
 		}
 
+		LWLockAcquire(ControlFileLock, LW_EXCLUSIVE);
+
 		ControlFile->MaxConnections = MaxConnections;
 		ControlFile->max_worker_processes = max_worker_processes;
 		ControlFile->max_wal_senders = max_wal_senders;
@@ -9752,6 +9754,8 @@ XLogReportParameters(void)
 		ControlFile->wal_log_hints = wal_log_hints;
 		ControlFile->track_commit_timestamp = track_commit_timestamp;
 		UpdateControlFile();
+
+		LWLockRelease(ControlFileLock);
 	}
 }
 
@@ -9976,7 +9980,9 @@ xlog_redo(XLogReaderState *record)
 		}
 
 		/* ControlFile->checkPointCopy always tracks the latest ckpt XID */
+		LWLockAcquire(ControlFileLock, LW_EXCLUSIVE);
 		ControlFile->checkPointCopy.nextFullXid = checkPoint.nextFullXid;
+		LWLockRelease(ControlFileLock);
 
 		/* Update shared-memory copy of checkpoint XID/epoch */
 		SpinLockAcquire(&XLogCtl->info_lck);
@@ -10033,7 +10039,9 @@ xlog_redo(XLogReaderState *record)
 			SetTransactionIdLimit(checkPoint.oldestXid,
 								  checkPoint.oldestXidDB);
 		/* ControlFile->checkPointCopy always tracks the latest ckpt XID */
+		LWLockAcquire(ControlFileLock, LW_EXCLUSIVE);
 		ControlFile->checkPointCopy.nextFullXid = checkPoint.nextFullXid;
+		LWLockRelease(ControlFileLock);
 
 		/* Update shared-memory copy of checkpoint XID/epoch */
 		SpinLockAcquire(&XLogCtl->info_lck);