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x86/oprof: adjust off-by-one counter range checks
Signed-off-by: Jan Beulich <jbeulich@suse.com> Acked-by: Keir Fraser <keir@xen.org> xen-unstable changeset: 26061:4b4c0c7a6031 xen-unstable date: Wed Oct 17 09:23:10 UTC 2012
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Jan Beulich committed
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commit
42f8e580bc
1 file changed
+2
-2
@@ -25,7 +25,7 @@ int xenoprof_arch_counter(XEN_GUEST_HANDLE(void) arg)
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if ( copy_from_guest(&counter, arg, 1) )
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return -EFAULT;
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if ( counter.ind > OP_MAX_COUNTER )
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if ( counter.ind >= OP_MAX_COUNTER )
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return -E2BIG;
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counter_config[counter.ind].count = counter.count;
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@@ -63,7 +63,7 @@ int compat_oprof_arch_counter(XEN_GUEST_HANDLE(void) arg)
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if ( copy_from_guest(&counter, arg, 1) )
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return -EFAULT;
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if ( counter.ind > OP_MAX_COUNTER )
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if ( counter.ind >= OP_MAX_COUNTER )
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return -E2BIG;
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counter_config[counter.ind].count = counter.count;
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