diff --git a/fs/smb/client/cifsfs.c b/fs/smb/client/cifsfs.c
index c96d09be11a5..87d8c93fcff4 100644
--- a/fs/smb/client/cifsfs.c
+++ b/fs/smb/client/cifsfs.c
@@ -1904,6 +1904,11 @@ static int __init
 init_cifs(void)
 {
 	int rc = 0;
+
+	rc = smb2_init_maperror();
+	if (rc)
+		return rc;
+
 	cifs_proc_init();
 	INIT_LIST_HEAD(&cifs_tcp_ses_list);
 /*
diff --git a/fs/smb/client/smb2maperror.c b/fs/smb/client/smb2maperror.c
index 42fec9abeac7..c36cfe707bf1 100644
--- a/fs/smb/client/smb2maperror.c
+++ b/fs/smb/client/smb2maperror.c
@@ -75,3 +75,20 @@ map_smb2_to_linux_error(char *buf, bool log_err)
 		smb_EIO1(smb_eio_trace_smb2_received_error, le32_to_cpu(smb2err));
 	return rc;
 }
+
+int __init smb2_init_maperror(void)
+{
+	unsigned int i;
+
+	/* Check whether the array is sorted in ascending order */
+	for (i = 1; i < ARRAY_SIZE(smb2_error_map_table); i++) {
+		if (smb2_error_map_table[i].smb2_status >=
+		    smb2_error_map_table[i - 1].smb2_status)
+			continue;
+
+		pr_err("smb2_error_map_table array order is incorrect\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
diff --git a/fs/smb/client/smb2proto.h b/fs/smb/client/smb2proto.h
index abd62cb2cecd..c7759e37d975 100644
--- a/fs/smb/client/smb2proto.h
+++ b/fs/smb/client/smb2proto.h
@@ -23,6 +23,7 @@ struct smb_rqst;
  *****************************************************************
  */
 int map_smb2_to_linux_error(char *buf, bool log_err);
+int smb2_init_maperror(void);
 int smb2_check_message(char *buf, unsigned int pdu_len, unsigned int len,
 		       struct TCP_Server_Info *server);
 unsigned int smb2_calc_size(void *buf);