[PATCH] kernel: auditfilter: resource management, need process tree when audit_add_watch failed in audit_add_rule

[Chen Gang <gang.chen@asianux.com>]

  need call audit_put_tree, if tree is valid.
  just like another area have done in function audit_add_rule.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
---
 kernel/auditfilter.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index f9fc54b..81f63f9 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -952,6 +952,12 @@ static inline int audit_add_rule(struct audit_entry *entry)
 		err = audit_add_watch(&entry->rule, &list);
 		if (err) {
 			mutex_unlock(&audit_filter_mutex);
+			/*
+			 * normally audit_add_tree_rule() will free it
+			 * on failure
+			 */
+			if (tree)
+				audit_put_tree(tree);
 			goto error;
 		}
 	}
-- 
1.7.7.6