linux-kernel - [PATCH 3.2 34/61] ftrace: Fix selftest goto location on error

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Date:   Wed, 22 Nov 2017 02:11:06 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Steven Rostedt (VMware)" <rostedt@...dmis.org>
Subject: [PATCH 3.2 34/61] ftrace: Fix selftest goto location on error

3.2.96-rc1 review patch.  If anyone has any objections, please let me know.

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

From: "Steven Rostedt (VMware)" <rostedt@...dmis.org>

commit 46320a6acc4fb58f04bcf78c4c942cc43b20f986 upstream.

In the second iteration of trace_selftest_ops(), the error goto label is
wrong in the case where trace_selftest_test_global_cnt is off. In the
case of error, it leaks the dynamic ops that was allocated.

Fixes: 95950c2e ("ftrace: Add self-tests for multiple function trace users")
Signed-off-by: Steven Rostedt (VMware) <rostedt@...dmis.org>
[bwh: Backported to 3.2: adjust context, indentation]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 kernel/trace/trace_selftest.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/kernel/trace/trace_selftest.c
+++ b/kernel/trace/trace_selftest.c
@@ -257,7 +257,7 @@ static int trace_selftest_ops(int cnt)
 	if (trace_selftest_test_probe3_cnt != 3)
 		goto out_free;
 	if (trace_selftest_test_global_cnt == 0)
-		goto out;
+		goto out_free;
 	if (trace_selftest_test_dyn_cnt == 0)
 		goto out_free;