[PATCH tip/perf] perf: fix resource leak in failure path of perf_event_open()

[Tejun Heo]

perf_event_open() kfrees event after init failure which doesn't
release all resources allocated by perf_event_alloc().  Use
free_event() instead.

Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
 kernel/perf_event.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: work/kernel/perf_event.c
===================================================================
--- work.orig/kernel/perf_event.c
+++ work/kernel/perf_event.c
@@ -4897,7 +4897,7 @@ err_fput_free_put_context:

 err_free_put_context:
 	if (err < 0)
-		kfree(event);
+		free_event(event);

 err_put_context:
 	if (err < 0)
--
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