Index: opal/mca/memory/malloc_hooks/memory_malloc_hooks.c
===================================================================
--- opal/mca/memory/malloc_hooks/memory_malloc_hooks.c	(revision 10123)
+++ opal/mca/memory/malloc_hooks/memory_malloc_hooks.c	(working copy)
@@ -27,6 +27,7 @@
      
 /* Prototypes for our hooks.  */
 void opal_memory_malloc_hooks_init(void);
+void opal_memory_malloc_hooks_finalize(void);
 static void opal_mem_free_free_hook (void*, const void *);
 static void* opal_mem_free_realloc_hook (void*, size_t, const void *);
      
@@ -60,6 +61,18 @@
 }
 
 
+void
+opal_memory_malloc_hooks_finalize(void)
+{
+    if (initialized == 0) {
+        return;
+    }
+
+    __free_hook = old_free_hook;
+    __realloc_hook = old_realloc_hook;
+    initialized = 0;
+}
+
 static void
 opal_mem_free_free_hook (void *ptr, const void *caller)
 {
Index: opal/mca/memory/malloc_hooks/memory_malloc_hooks_component.c
===================================================================
--- opal/mca/memory/malloc_hooks/memory_malloc_hooks_component.c	(revision 10123)
+++ opal/mca/memory/malloc_hooks/memory_malloc_hooks_component.c	(working copy)
@@ -22,8 +22,10 @@
 #include "opal/include/constants.h"
 
 extern void opal_memory_malloc_hooks_init(void);
+extern void opal_memory_malloc_hooks_finalize(void);
 
 static int opal_memory_malloc_open(void);
+static int opal_memory_malloc_close(void);
 
 const opal_memory_base_component_1_0_0_t mca_memory_malloc_hooks_component = {
     /* First, the mca_component_t struct containing meta information
@@ -41,7 +43,7 @@
 
         /* Component open and close functions */
         opal_memory_malloc_open,
-        NULL
+        opal_memory_malloc_close
     },
 
     /* Next the MCA v1.0.0 component meta data */
@@ -58,3 +60,10 @@
     opal_memory_malloc_hooks_init();
     return OPAL_SUCCESS;
 }
+
+static int
+opal_memory_malloc_close(void)
+{
+    opal_memory_malloc_hooks_finalize();
+    return OPAL_SUCCESS;
+}