From 0ff0b3f57d2610ca7bfb4e604b272bc80e571e84 Mon Sep 17 00:00:00 2001
From: "Unknown W. Brackets" <checkins@unknownbrackets.org>
Date: Sat, 9 Feb 2013 18:56:34 -0800
Subject: [PATCH] Return an error for invalid priority.

---
 Core/HLE/sceKernelThread.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Core/HLE/sceKernelThread.cpp b/Core/HLE/sceKernelThread.cpp
index 41a0aef0fc..30f303b93c 100644
--- a/Core/HLE/sceKernelThread.cpp
+++ b/Core/HLE/sceKernelThread.cpp
@@ -1609,6 +1609,9 @@ int sceKernelRotateThreadReadyQueue(int priority)
 	if (priority == 0)
 		priority = cur->nt.currentPriority;
 
+	if (priority <= 0x07 || priority > 0x77)
+		return SCE_KERNEL_ERROR_ILLEGAL_PRIORITY;
+
 	if (!threadReadyQueue[priority].empty())
 	{
 		// In other words, yield to everyone else.