[PATCH 06/11] perf c2c: Fix memory leak in build_cl_output()

From: Arnaldo Carvalho de Melo
Date: Thu Oct 17 2019 - 12:03:33 EST


From: Yunfeng Ye <yeyunfeng@xxxxxxxxxx>

There is a memory leak problem in the failure paths of
build_cl_output(), so fix it.

Signed-off-by: Yunfeng Ye <yeyunfeng@xxxxxxxxxx>
Acked-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Feilong Lin <linfeilong@xxxxxxxxxx>
Cc: Hu Shiyuan <hushiyuan@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Link: http://lore.kernel.org/lkml/4d3c0178-5482-c313-98e1-f82090d2d456@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/builtin-c2c.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 3542b6ab9813..e69f44941aad 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -2635,6 +2635,7 @@ static int build_cl_output(char *cl_sort, bool no_source)
bool add_sym = false;
bool add_dso = false;
bool add_src = false;
+ int ret = 0;

if (!buf)
return -ENOMEM;
@@ -2653,7 +2654,8 @@ static int build_cl_output(char *cl_sort, bool no_source)
add_dso = true;
} else if (strcmp(tok, "offset")) {
pr_err("unrecognized sort token: %s\n", tok);
- return -EINVAL;
+ ret = -EINVAL;
+ goto err;
}
}

@@ -2676,13 +2678,15 @@ static int build_cl_output(char *cl_sort, bool no_source)
add_sym ? "symbol," : "",
add_dso ? "dso," : "",
add_src ? "cl_srcline," : "",
- "node") < 0)
- return -ENOMEM;
+ "node") < 0) {
+ ret = -ENOMEM;
+ goto err;
+ }

c2c.show_src = add_src;
-
+err:
free(buf);
- return 0;
+ return ret;
}

static int setup_coalesce(const char *coalesce, bool no_source)
--
2.21.0