linux-kernel - [PATCH] kernel/auditfilter.c: need process 'tree' when audit_add_watch() failed in audit_add

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Message-ID: <518CC80A.3070608@asianux.com>
Date:	Fri, 10 May 2013 18:12:26 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Al Viro <viro@...iv.linux.org.uk>, Eric Paris <eparis@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] kernel/auditfilter.c: need process 'tree' when audit_add_watch()
 failed in audit_add_rule().


If both 'tree' and 'watch' are valid, need call audit_put_tree(), just
like the upper area has done within function audit_add_rule().

Signed-off-by: Chen Gang <gang.chen@...anux.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
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