File pacemaker-libtransition-unpack_action-memory-leak.patch of Package pacemaker.3577

commit e4e25fd862e0c543c2e8f96a8fdad1da4053d75b
Author: Ken Gaillot <kgaillot@redhat.com>
Date:   Thu Mar 3 16:55:08 2016 -0600

    Fix: libtransition: potential memory leak if unpacking action fails
    
    Before, a copy of the action XML would be allocated but not freed
    if allocating the action structure then failed, and callers would silently
    ignore the failure. Now, the memory leak is avoided, and any errors
    will be logged.

diff --git a/lib/transition/unpack.c b/lib/transition/unpack.c
index 01c71f2..c873ebf 100644
--- a/lib/transition/unpack.c
+++ b/lib/transition/unpack.c
@@ -32,7 +32,6 @@ static crm_action_t *
 unpack_action(synapse_t * parent, xmlNode * xml_action)
 {
     crm_action_t *action = NULL;
-    xmlNode *action_copy = NULL;
     const char *value = crm_element_value(xml_action, XML_ATTR_ID);
 
     if (value == NULL) {
@@ -41,28 +40,25 @@ unpack_action(synapse_t * parent, xmlNode * xml_action)
         return NULL;
     }
 
-    action_copy = copy_xml(xml_action);
     action = calloc(1, sizeof(crm_action_t));
-    if (action == NULL) {
-        return NULL;
-    }
+    CRM_CHECK(action != NULL, return NULL);
 
     action->id = crm_parse_int(value, NULL);
     action->type = action_type_rsc;
-    action->xml = action_copy;
+    action->xml = copy_xml(xml_action);
     action->synapse = parent;
 
-    if (safe_str_eq(crm_element_name(action_copy), XML_GRAPH_TAG_RSC_OP)) {
+    if (safe_str_eq(crm_element_name(action->xml), XML_GRAPH_TAG_RSC_OP)) {
         action->type = action_type_rsc;
 
-    } else if (safe_str_eq(crm_element_name(action_copy), XML_GRAPH_TAG_PSEUDO_EVENT)) {
+    } else if (safe_str_eq(crm_element_name(action->xml), XML_GRAPH_TAG_PSEUDO_EVENT)) {
         action->type = action_type_pseudo;
 
-    } else if (safe_str_eq(crm_element_name(action_copy), XML_GRAPH_TAG_CRM_EVENT)) {
+    } else if (safe_str_eq(crm_element_name(action->xml), XML_GRAPH_TAG_CRM_EVENT)) {
         action->type = action_type_crm;
     }
 
-    action->params = xml2list(action_copy);
+    action->params = xml2list(action->xml);
 
     value = g_hash_table_lookup(action->params, "CRM_meta_timeout");
     if (value != NULL) {