[tip:tracing/urgent] tracing: Fix failure path in ftrace_regex_open()

[tip-bot for Li Zefan <lizf@cn.fujitsu.com>]

Commit-ID:  79fe249c8368be35c9ca05982e80c68e959505e1
Gitweb:     http://git.kernel.org/tip/79fe249c8368be35c9ca05982e80c68e959505e1
Author:     Li Zefan <lizf@cn.fujitsu.com>
AuthorDate: Tue, 22 Sep 2009 13:54:28 +0800
Committer:  Ingo Molnar <mingo@elte.hu>
CommitDate: Tue, 22 Sep 2009 10:28:57 +0200

tracing: Fix failure path in ftrace_regex_open()

Don't forget to free trace_parser if seq_open() returned failure.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <4AB86694.4040803@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>


---
 kernel/trace/ftrace.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 5c5cb9b..e70af98 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -1621,8 +1621,10 @@ ftrace_regex_open(struct inode *inode, struct file *file, int enable)
 		if (!ret) {
 			struct seq_file *m = file->private_data;
 			m->private = iter;
-		} else
+		} else {
+			trace_parser_put(&iter->parser);
 			kfree(iter);
+		}
 	} else
 		file->private_data = iter;
 	mutex_unlock(&ftrace_regex_lock);