[Xen-changelog] [xen-4.2-testing] x86/oprof: adjust off-by-one counter range checks

[Xen patchbot-4.2-testing <patchbot@xxxxxxx>]

# HG changeset patch
# User Jan Beulich <jbeulich@xxxxxxxx>
# Date 1351171430 -7200
# Node ID 0fbfdecc80452868c78e0c1c872d730ce5fb0f6f
# Parent  2f8236a49dcce840a7b540a8796f6867292d656e
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 2f8236a49dcc -r 0fbfdecc8045 xen/arch/x86/oprofile/xenoprof.c
--- a/xen/arch/x86/oprofile/xenoprof.c  Thu Oct 25 15:23:17 2012 +0200
+++ b/xen/arch/x86/oprofile/xenoprof.c  Thu Oct 25 15:23:50 2012 +0200
@@ -26,7 +26,7 @@ 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;
@@ -64,7 +64,7 @@ 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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