[PATCH AUTOSEL 4.19 019/146] perf tools: Cleanup trace-event-info 'tdata' leak

From: Sasha Levin
Date: Wed Oct 31 2018 - 19:53:32 EST


From: Sanskriti Sharma <sansharm@xxxxxxxxxx>

[ Upstream commit faedbf3fd19f2511a39397f76359e4cc6ee93072 ]

Free tracing_data structure in tracing_data_get() error paths.

Fixes the following coverity complaint:

Error: RESOURCE_LEAK (CWE-772):
leaked_storage: Variable "tdata" going out of scope leaks the storage

Signed-off-by: Sanskriti Sharma <sansharm@xxxxxxxxxx>
Reviewed-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Joe Lawrence <joe.lawrence@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1538490554-8161-3-git-send-email-sansharm@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
tools/perf/util/trace-event-info.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c
index 7b0ca7cbb7de..8ad8e755127b 100644
--- a/tools/perf/util/trace-event-info.c
+++ b/tools/perf/util/trace-event-info.c
@@ -531,12 +531,14 @@ struct tracing_data *tracing_data_get(struct list_head *pattrs,
"/tmp/perf-XXXXXX");
if (!mkstemp(tdata->temp_file)) {
pr_debug("Can't make temp file");
+ free(tdata);
return NULL;
}

temp_fd = open(tdata->temp_file, O_RDWR);
if (temp_fd < 0) {
pr_debug("Can't read '%s'", tdata->temp_file);
+ free(tdata);
return NULL;
}

--
2.17.1