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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-08-04 13:18:38 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-08-07 16:40:29 -0300 |
| commit | a612bbf8b8fdd29136a1ac8b2afca3780278d344 (patch) | |
| tree | 20073dc2602f7d2a9aa54637e8513afc4105cf68 | |
| parent | 7bc0153c53bc1ef96e5d1ffb039d9070a944966b (diff) | |
| download | linux-stable-a612bbf8b8fdd29136a1ac8b2afca3780278d344.tar.gz linux-stable-a612bbf8b8fdd29136a1ac8b2afca3780278d344.tar.bz2 linux-stable-a612bbf8b8fdd29136a1ac8b2afca3780278d344.zip | |
perf probe: Free string returned by synthesize_perf_probe_point() on failure in synthesize_perf_probe_command()
Building perf with EXTRA_CFLAGS="-fsanitize=address" a leak was detected
elsewhere and lead to an audit, where we found that
synthesize_perf_probe_command() may leak synthesize_perf_probe_point()
return on failure, fix it.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/ZM0mzpQktHnhXJXr@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/probe-event.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index c7bfeab610a3..2835d87cb977 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2063,14 +2063,18 @@ char *synthesize_perf_probe_command(struct perf_probe_event *pev) goto out; tmp = synthesize_perf_probe_point(&pev->point); - if (!tmp || strbuf_addstr(&buf, tmp) < 0) + if (!tmp || strbuf_addstr(&buf, tmp) < 0) { + free(tmp); goto out; + } free(tmp); for (i = 0; i < pev->nargs; i++) { tmp = synthesize_perf_probe_arg(pev->args + i); - if (!tmp || strbuf_addf(&buf, " %s", tmp) < 0) + if (!tmp || strbuf_addf(&buf, " %s", tmp) < 0) { + free(tmp); goto out; + } free(tmp); } |