[PATCH 1/2] tracing/filters: free filter_string in destroy_preds()

From: Li Zefan
Date: Tue Jun 16 2009 - 04:37:49 EST


filter->filter_string is not freed when unloading a module:

# insmod trace-events-sample.ko
# echo "bar < 100" > /mnt/tracing/events/sample/foo_bar/filter
# rmmod trace-events-sample.ko

[ Impact: fix memory leak when unloading module ]

Signed-off-by: Li Zefan <lizf@xxxxxxxxxxxxxx>
---
kernel/trace/trace_events_filter.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c
index b24ab0e..d9f01c1 100644
--- a/kernel/trace/trace_events_filter.c
+++ b/kernel/trace/trace_events_filter.c
@@ -381,6 +381,7 @@ void destroy_preds(struct ftrace_event_call *call)
filter_free_pred(filter->preds[i]);
}
kfree(filter->preds);
+ kfree(filter->filter_string);
kfree(filter);
call->filter = NULL;
}
--
1.5.4.rc3

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