PaperMC/patches/server/0359-Prevent-Double-PlayerChunkMap-adds-crashing-server.patch
Spottedleaf 1281f4f552 Make region/lock shift accessors per world
This has been done to ensure that the shifts are not used
until the world object is being constructed, which is before
the global configuration is initialised. There also isn't any
reason for these shifts to be global anyways.
2023-12-30 15:45:24 -08:00

47 lines
3 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 2 Apr 2020 01:42:39 -0400
Subject: [PATCH] Prevent Double PlayerChunkMap adds crashing server
Suspected case would be around the technique used in .stopRiding
Stack will identify any causer of this and warn instead of crashing.
diff --git a/src/main/java/net/minecraft/server/level/ChunkMap.java b/src/main/java/net/minecraft/server/level/ChunkMap.java
index 1f9efff4ddccf2569fdfe42e6cbc92792643d0ea..876200db872bce89976329c4d6c6fbe9fd155f24 100644
--- a/src/main/java/net/minecraft/server/level/ChunkMap.java
+++ b/src/main/java/net/minecraft/server/level/ChunkMap.java
@@ -993,6 +993,13 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
public void addEntity(Entity entity) {
org.spigotmc.AsyncCatcher.catchOp("entity track"); // Spigot
+ // Paper start - ignore and warn about illegal addEntity calls instead of crashing server
+ if (!entity.valid || entity.level() != this.level || this.entityMap.containsKey(entity.getId())) {
+ LOGGER.error("Illegal ChunkMap::addEntity for world " + this.level.getWorld().getName()
+ + ": " + entity + (this.entityMap.containsKey(entity.getId()) ? " ALREADY CONTAINED (This would have crashed your server)" : ""), new Throwable());
+ return;
+ }
+ // Paper end
if (!(entity instanceof EnderDragonPart)) {
EntityType<?> entitytypes = entity.getType();
int i = entitytypes.clientTrackingRange() * 16;
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index 6a2ced4ff900f07833400926333fee527fac1074..1e54396f42737f18d6b3cef7d0c208ec03088b73 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -2515,7 +2515,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
public void onTrackingStart(Entity entity) {
org.spigotmc.AsyncCatcher.catchOp("entity register"); // Spigot
- ServerLevel.this.getChunkSource().addEntity(entity);
+ // ServerLevel.this.getChunkSource().addEntity(entity); // Paper - moved down below valid=true
if (entity instanceof ServerPlayer) {
ServerPlayer entityplayer = (ServerPlayer) entity;
@@ -2550,6 +2550,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
entity.updateDynamicGameEventListener(DynamicGameEventListener::add);
entity.inWorld = true; // CraftBukkit - Mark entity as in world
entity.valid = true; // CraftBukkit
+ ServerLevel.this.getChunkSource().addEntity(entity);
// Paper start - Set origin location when the entity is being added to the world
if (entity.getOriginVector() == null) {
entity.setOrigin(entity.getBukkitEntity().getLocation());