[Xen-changelog] [xen-4.1-testing] x86/oprof: adjust off-by-one counter range checks

[Xen patchbot-4.1-testing <patchbot@xxxxxxx>]

# HG changeset patch
# User Jan Beulich <jbeulich@xxxxxxxx>
# Date 1351497753 -3600
# Node ID 2cdf9b7338018f3d4ce8125d01564ff5587c7241
# Parent  a18ca08c475e020da935c2024cebc2d8b97074cb
x86/oprof: adjust off-by-one counter range checks

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Keir Fraser <keir@xxxxxxx>
xen-unstable changeset: 26061:4b4c0c7a6031
xen-unstable date: Wed Oct 17 09:23:10 UTC 2012
---


diff -r a18ca08c475e -r 2cdf9b733801 xen/arch/x86/oprofile/xenoprof.c
--- a/xen/arch/x86/oprofile/xenoprof.c  Mon Oct 29 09:01:52 2012 +0100
+++ b/xen/arch/x86/oprofile/xenoprof.c  Mon Oct 29 09:02:33 2012 +0100
@@ -25,7 +25,7 @@ int xenoprof_arch_counter(XEN_GUEST_HAND
     if ( copy_from_guest(&counter, arg, 1) )
         return -EFAULT;
 
-    if ( counter.ind > OP_MAX_COUNTER )
+    if ( counter.ind >= OP_MAX_COUNTER )
         return -E2BIG;
 
     counter_config[counter.ind].count     = counter.count;
@@ -63,7 +63,7 @@ int compat_oprof_arch_counter(XEN_GUEST_
     if ( copy_from_guest(&counter, arg, 1) )
         return -EFAULT;
 
-    if ( counter.ind > OP_MAX_COUNTER )
+    if ( counter.ind >= OP_MAX_COUNTER )
         return -E2BIG;
 
     counter_config[counter.ind].count     = counter.count;

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