From 96735eba68067341a8c5042a530046e7b5048369 Mon Sep 17 00:00:00 2001
From: Fabian <copy@copy.sh>
Date: Mon, 8 Nov 2021 19:51:14 -0500
Subject: [PATCH] iret: Implement eip limit check (fix ubuntu 10 #474)

---
 src/rust/cpu/cpu.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/rust/cpu/cpu.rs b/src/rust/cpu/cpu.rs
index 095b7a4a..616faa8f 100644
--- a/src/rust/cpu/cpu.rs
+++ b/src/rust/cpu/cpu.rs
@@ -551,7 +551,15 @@ pub unsafe fn iret(is_16: bool) {
         },
     };
 
-    dbg_assert!(new_eip as u32 <= cs_descriptor.effective_limit());
+    if new_eip as u32 > cs_descriptor.effective_limit() {
+        dbg_log!(
+            "#gp iret: new_eip > cs_descriptor.effective_limit, new_eip={:x} cs_descriptor.effective_limit={:x}",
+            new_eip as u32,
+            cs_descriptor.effective_limit()
+        );
+        trigger_gp(new_cs & !3);
+        return;
+    }
 
     if !cs_descriptor.is_present() {
         panic!("not present");