smb/client: check if SMB1 DOS/SRV error mapping arrays are sorted

Although the arrays are sorted at build time, verify the ordering again
when cifs.ko is loaded to avoid potential regressions introduced by
future script changes.

Signed-off-by: Youling Tang <tangyouling@kylinos.cn>
Reviewed-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Signed-off-by: Steve French <stfrench@microsoft.com>

Author: tangyouling

fs/smb/client/smb1maperror.c

@@ -219,6 +219,10 @@ static int __init __array ## _is_sorted(void)				\
 
 /* ntstatus_to_dos_map_is_sorted */
 DEFINE_CHECK_SORT_FUNC(ntstatus_to_dos_map, ntstatus);
+/* mapping_table_ERRDOS_is_sorted */
+DEFINE_CHECK_SORT_FUNC(mapping_table_ERRDOS, smb_err);
+/* mapping_table_ERRSRV_is_sorted */
+DEFINE_CHECK_SORT_FUNC(mapping_table_ERRSRV, smb_err);
 
 int __init smb1_init_maperror(void)
 {
@@ -228,6 +232,14 @@ int __init smb1_init_maperror(void)
 	if (rc)
 		return rc;
 
+	rc = mapping_table_ERRDOS_is_sorted();
+	if (rc)
+		return rc;
+
+	rc = mapping_table_ERRSRV_is_sorted();
+	if (rc)
+		return rc;
+
 	return rc;
 }