papermc/Spigot-Server-Patches/0482-Don-t-crash-if-player-is-attempted-to-be-removed-fro.patch
Aikar 146b99080c
Improve ChunkMapDistance.b crash fix to clean up properly
There is some vanilla level bug where this tracking state appears
to get messed up and player doesn't exists in chunk its trying to untrack.

We returned early to prevent crashing, but I suspect if there was a level being
tracked for the chunk, it got leaked due to the early return.

So going to ensure we clean up the level tracker when this state occurs.

This may help with any leaked chunk issues.
2020-06-09 23:05:43 -04:00

23 lines
1.2 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 18 Apr 2020 15:59:41 -0400
Subject: [PATCH] Don't crash if player is attempted to be removed from
untracked chunk.
I suspect it deals with teleporting as it uses players current x/y/z
diff --git a/src/main/java/net/minecraft/server/ChunkMapDistance.java b/src/main/java/net/minecraft/server/ChunkMapDistance.java
index 83da76fdc495225b563cecbdb71422aec2b534f3..10e385eb556faff954df28ed0b3ddaceac2b8baa 100644
--- a/src/main/java/net/minecraft/server/ChunkMapDistance.java
+++ b/src/main/java/net/minecraft/server/ChunkMapDistance.java
@@ -238,8 +238,8 @@ public abstract class ChunkMapDistance {
long i = sectionposition.u().pair();
ObjectSet<EntityPlayer> objectset = (ObjectSet) this.c.get(i);
- objectset.remove(entityplayer);
- if (objectset.isEmpty()) {
+ if (objectset != null) objectset.remove(entityplayer); // Paper - some state corruption happens here, don't crash, clean up gracefully.
+ if (objectset == null || objectset.isEmpty()) { // Paper
this.c.remove(i);
this.f.b(i, Integer.MAX_VALUE, false);
this.g.b(i, Integer.MAX_VALUE, false);