linux-kernel - [tip:tracing/filters] tracing/filters: free pred when clearing filters

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Date:	Tue, 24 Mar 2009 07:27:46 GMT
From:	Tom Zanussi <tzanussi@...il.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	fweisbec@...il.com, tzanussi@...il.com, rostedt@...dmis.org,
	tglx@...utronix.de, mingo@...e.hu
Subject: [tip:tracing/filters] tracing/filters: free pred when clearing filters

Commit-ID:  09f1f245c79585383de63e3ca54d0f91824bff3a
Gitweb:     http://git.kernel.org/tip/09f1f245c79585383de63e3ca54d0f91824bff3a
Author:     Tom Zanussi <tzanussi@...il.com>
AuthorDate: Tue, 24 Mar 2009 02:14:11 -0500
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Tue, 24 Mar 2009 08:26:51 +0100

tracing/filters: free pred when clearing filters

Impact: fix (small) per trace filter modification memory leak

Free the current pred when clearing the filters via the filter files.

Signed-off-by: Tom Zanussi <tzanussi@...il.com>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: =?ISO-8859-1?Q?Fr=E9d=E9ric?= Weisbecker <fweisbec@...il.com>
LKML-Reference: <1237878851.8339.58.camel@...rm-linux>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 kernel/trace/trace_events.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index fdab30d..a938138 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -516,6 +516,7 @@ event_filter_write(struct file *filp, const char __user *ubuf, size_t cnt,
 
 	if (pred->clear) {
 		filter_free_preds(call);
+		filter_free_pred(pred);
 		return cnt;
 	}
 
@@ -581,6 +582,7 @@ subsystem_filter_write(struct file *filp, const char __user *ubuf, size_t cnt,
 
 	if (pred->clear) {
 		filter_free_subsystem_preds(system);
+		filter_free_pred(pred);
 		return cnt;
 	}
 
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