From: Steven Rostedt <srostedt@redhat.com>
Date: Fri, 28 Jan 2011 03:53:06 +0000 (-0500)
Subject: tracing/filter: Free pred array on disabling of filter
X-Git-Tag: v2.6.39-rc1~510^2~39^2~8
X-Git-Url: https://git.kernelconcepts.de/?a=commitdiff_plain;h=f76690afd05e3e163149310bdcd30234f93b3a7a;p=karo-tx-linux.git

tracing/filter: Free pred array on disabling of filter

When a filter is disabled, free the preds.

Cc: Tom Zanussi <tzanussi@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index b6c910642a1e..2f5458e244a3 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -1388,6 +1388,10 @@ int apply_event_filter(struct ftrace_event_call *call, char *filter_string)
 
 	if (!strcmp(strstrip(filter_string), "0")) {
 		filter_disable_preds(call);
+		reset_preds(call->filter);
+		/* Make sure the filter is not being used */
+		synchronize_sched();
+		__free_preds(call->filter);
 		remove_filter_string(call->filter);
 		goto out_unlock;
 	}