From 881b740eae458fac1aeb37338c0cfc6db10d5d9f Mon Sep 17 00:00:00 2001
From: Stephen Michael Jothen <sjothen@gmail.com>
Date: Fri, 3 Jun 2022 21:21:18 +0200
Subject: [PATCH] Transform GDT limit and compare with that

---
 tool/build/lib/machine.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tool/build/lib/machine.c b/tool/build/lib/machine.c
index 0cf9a0d01..aba400fa2 100644
--- a/tool/build/lib/machine.c
+++ b/tool/build/lib/machine.c
@@ -210,7 +210,7 @@ static relegated int GetDescriptor(struct Machine *m, int selector,
   uint8_t buf[8];
   DCHECK(m->gdt_base + m->gdt_limit <= m->real.n);
   selector &= -8;
-  if (8 <= selector && selector + 8 <= m->gdt_limit) {
+  if (8 <= selector && selector + 8 <= m->gdt_limit + 1) {
     SetReadAddr(m, m->gdt_base + selector, 8);
     *out_descriptor = Read64(m->real.p + m->gdt_base + selector);
     return 0;