From 648c0f66850375e518e00840c58496586f1bf595 Mon Sep 17 00:00:00 2001
From: "Unknown W. Brackets" <checkins@unknownbrackets.org>
Date: Sat, 18 Jan 2014 09:58:48 -0800
Subject: [PATCH] Avoid an infinite loop on bad stack walk.

If the address is wrong, it'll re-trigger debug mode, which will re-walk
the stack, which will continue ad infinitum.
---
 Core/MIPS/MIPSStackWalk.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Core/MIPS/MIPSStackWalk.cpp b/Core/MIPS/MIPSStackWalk.cpp
index f520461e37..5cac3df7c8 100644
--- a/Core/MIPS/MIPSStackWalk.cpp
+++ b/Core/MIPS/MIPSStackWalk.cpp
@@ -102,7 +102,7 @@ namespace MIPSStackWalk {
 
 				frame.entry = pc;
 				frame.stackSize = -_IMM16;
-				if (ra_offset != -1) {
+				if (ra_offset != -1 && Memory::IsValidAddress(frame.sp + ra_offset)) {
 					ra = Memory::Read_U32(frame.sp + ra_offset);
 				}
 				return true;