--- linux-cjktty-5.4.patch	2020-04-30 11:29:47.000000000 +0800
+++ linux-cjktty-5.4.36.patch	2020-04-30 11:36:17.000000000 +0800
@@ -137,7 +137,7 @@
  	if (new_cols == vc->vc_cols && new_rows == vc->vc_rows)
  		return 0;
  
- 	if (new_screen_size > (4 << 20))
+ 	if (new_screen_size > KMALLOC_MAX_SIZE)
  		return -EINVAL;
 -	newscreen = kzalloc(new_screen_size, GFP_USER);
 +