PaperMC/Spigot-Server-Patches/0423-Prevent-Double-PlayerChunkMap-adds-crashing-server.patch
Gabscap 7ae47d4eb3
[CI-SKIP] Remove Waving banner fix (#4786)
Mojang fixed it in MC-63720
2020-11-19 10:15:16 -05:00

48 lines
2.9 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/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
index 512940ef8608d28c83a4a8d0777a99ebf25b4e8b..f839091ae4385e763a19d680585a9363fad6b744 100644
--- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
+++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
@@ -1446,6 +1446,14 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
protected 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.world != this.world || this.trackedEntities.containsKey(entity.getId())) {
+ new Throwable("[ERROR] Illegal PlayerChunkMap::addEntity for world " + this.world.getWorld().getName()
+ + ": " + entity + (this.trackedEntities.containsKey(entity.getId()) ? " ALREADY CONTAINED (This would have crashed your server)" : ""))
+ .printStackTrace();
+ return;
+ }
+ // Paper end
if (!(entity instanceof EntityComplexPart)) {
EntityTypes<?> entitytypes = entity.getEntityType();
int i = entitytypes.getChunkRange() * 16;
diff --git a/src/main/java/net/minecraft/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java
index 5cb27e78ec27b131ea2790bb0aceca5b27fbf5b6..ed13a1bc54cebebbafbf9a3822d2942fbc09249e 100644
--- a/src/main/java/net/minecraft/server/WorldServer.java
+++ b/src/main/java/net/minecraft/server/WorldServer.java
@@ -1417,7 +1417,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
}
}
- this.getChunkProvider().addEntity(entity);
+ // this.getChunkProvider().addEntity(entity); // Paper - moved down below valid=true
// CraftBukkit start - SPIGOT-5278
if (entity instanceof EntityDrowned) {
this.navigators.add(((EntityDrowned) entity).navigationWater);
@@ -1428,6 +1428,7 @@ public class WorldServer extends World implements GeneratorAccessSeed {
this.navigators.add(((EntityInsentient) entity).getNavigation());
}
entity.valid = true; // CraftBukkit
+ this.getChunkProvider().addEntity(entity); // Paper - from above to be below valid=true
// Paper start - Set origin location when the entity is being added to the world
if (entity.origin == null) {
entity.origin = entity.getBukkitEntity().getLocation();