From: Zheng Zengkai zhengzengkai@huawei.com
[ Upstream commit 2eb5dd418034ecea2f7031e3d33f2991a878b148 ]
When using 'perf record's 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 Acked-by: Jiri Olsa jolsa@redhat.com Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Li Bin huawei.libin@huawei.com Cc: Mark Rutland mark.rutland@arm.com Cc: Namhyung Kim namhyung@kernel.org Link: https://lore.kernel.org/r/20200703093344.189450-1-zhengzengkai@huawei.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 4f2c1c255d818..a8865d1c3e818 100644 --- a/tools/perf/util/parse-regs-options.c +++ b/tools/perf/util/parse-regs-options.c @@ -40,7 +40,7 @@ parse_regs(const struct option *opt, const char *str, int unset) } fputc('\n', stderr); /* just printing available regs */ - return -1; + goto error; } for (r = sample_reg_masks; r->name; r++) { if (!strcasecmp(s, r->name))