linux-kernel - [37/98] perf: Fix resource leak in failure path of perf_event

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Date:	Mon, 10 May 2010 15:34:49 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Tejun Heo <tj@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Paul Mackerras <paulus@....ibm.com>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Ingo Molnar <mingo@...e.hu>
Subject: [37/98] perf: Fix resource leak in failure path of perf_event_open()

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Tejun Heo <tj@...nel.org>

commit 048c852051d2bd5da54a4488bc1f16b0fc74c695 upstream.

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@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Paul Mackerras <paulus@....ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
LKML-Reference: <4BDBE237.1040809@...nel.org>
Signed-off-by: Ingo Molnar <mingo@...e.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 kernel/perf_event.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/perf_event.c
+++ b/kernel/perf_event.c
@@ -4609,7 +4609,7 @@ 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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