From: Keir Fraser <keir.fraser@citrix.com>
Date: Wed, 30 Jun 2010 17:11:09 +0000 (+0100)
Subject: x86: fix an off-by-one pirq range check
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~11859
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=1b2b50ec3f63fd2ecef79aa318678eecbed01c38;p=xen.git

x86: fix an off-by-one pirq range check

Signed-off-by: Jan Beulich <jbeulich@novell.com>
---

diff --git a/xen/arch/x86/irq.c b/xen/arch/x86/irq.c
index 048b0ead3c..a8368fd4ed 100644
--- a/xen/arch/x86/irq.c
+++ b/xen/arch/x86/irq.c
@@ -1027,7 +1027,7 @@ static void __pirq_guest_eoi(struct domain *d, int pirq)
 
 int pirq_guest_eoi(struct domain *d, int irq)
 {
-    if ( (irq < 0) || (irq > d->nr_pirqs) )
+    if ( (irq < 0) || (irq >= d->nr_pirqs) )
         return -EINVAL;
 
     __pirq_guest_eoi(d, irq);