From: Keir Fraser <keir.fraser@citrix.com>
Date: Tue, 26 Feb 2008 14:46:07 +0000 (+0000)
Subject: x86_emulate: Fix FNSTCW/FNSTSW modrm range check.
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14299^2~7
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=f69a0fcf366ffc5a39d6f32ad338df8bddc69332;p=xen.git

x86_emulate: Fix FNSTCW/FNSTSW modrm range check.
Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
---

diff --git a/xen/arch/x86/x86_emulate.c b/xen/arch/x86/x86_emulate.c
index fb9f16df12..d75f49c504 100644
--- a/xen/arch/x86/x86_emulate.c
+++ b/xen/arch/x86/x86_emulate.c
@@ -2671,7 +2671,7 @@ x86_emulate(
         fail_if(ops->load_fpu_ctxt == NULL);
         ops->load_fpu_ctxt(ctxt);
         fail_if((modrm_reg & 7) != 7);
-        fail_if(modrm_reg >= 0xc0);
+        fail_if(modrm >= 0xc0);
         /* fnstcw m2byte */
         ea.bytes = 2;
         dst = ea;
@@ -2690,7 +2690,7 @@ x86_emulate(
         fail_if(ops->load_fpu_ctxt == NULL);
         ops->load_fpu_ctxt(ctxt);
         fail_if((modrm_reg & 7) != 7);
-        fail_if(modrm_reg >= 0xc0);
+        fail_if(modrm >= 0xc0);
         /* fnstsw m2byte */
         ea.bytes = 2;
         dst = ea;