From 992ba8eacd10adf4e6ba33bbd2d17a70c9c02b24 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 21 Sep 2016 23:48:39 -0400
Subject: [PATCH] Auto fix bad Y levels on player login

Bring down to a saner Y level if super high, as this can cause the server to crash

diff --git a/src/main/java/net/minecraft/server/EntityPlayer.java b/src/main/java/net/minecraft/server/EntityPlayer.java
index 0cd350254..4da83a1bf 100644
--- a/src/main/java/net/minecraft/server/EntityPlayer.java
+++ b/src/main/java/net/minecraft/server/EntityPlayer.java
@@ -128,6 +128,7 @@ public class EntityPlayer extends EntityHuman implements ICrafting {
             }
         }
 
+        if (this.locY > 300) this.locY = 257; // Paper - bring down to a saner Y level if out of world
         this.getBukkitEntity().readExtraData(nbttagcompound); // CraftBukkit
     }
 
-- 
2.12.0.windows.1