xen/p2m/debugfs: Fix potential pointer exception.

We could be referencing the last + 1 element of level_name[]
array which would cause a pointer exception, because of the
initial setup of lvl=4.

[v1: No need to do this for type_name, pointed out by Ian Campbell]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c
index 58efeb9..2e3bf7a 100644 (file)
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -786,7 +786,7 @@ EXPORT_SYMBOL_GPL(m2p_find_override_pfn);
 int p2m_dump_show(struct seq_file *m, void *v)
 {
        static const char * const level_name[] = { "top", "middle",
-                                               "entry", "abnormal" };
+                                               "entry", "abnormal", "error"};
        static const char * const type_name[] = { "identity", "missing",
                                                "pfn", "abnormal"};
 #define TYPE_IDENTITY 0