[PATCH -next] perf util: Fix memory leak in __parse_regs()

Zheng Zengkai
2020-07-03T09:29:13Z

when using perf record option '-I' or '--user-regs='
along with argument '?' to list available register names,
memory of variable 'os' allocated by strdup() needs to be released
before __parse_regs() returns, otherwise memory leak will occur.

Fixes: bcc84ec65ad1 ("perf record: Add ability to name registers to record")
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
---
tools/perf/util/parse-regs-options.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/parse-regs-options.c b/tools/perf/util/parse-regs-options.c
index e687497b3aac..a4a100425b3a 100644
--- a/tools/perf/util/parse-regs-options.c
+++ b/tools/perf/util/parse-regs-options.c
@@ -54,7 +54,7 @@ __parse_regs(const struct option *opt, const char *str, int unset, bool intr)
#endif
fputc('\n', stderr);
/* just printing available regs */
- return -1;
+ goto error;
}
#ifdef HAVE_PERF_REGS_SUPPORT
for (r = sample_reg_masks; r->name; r++) {
--
2.20.1