From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Riccardo Mancini <rickyman7@gmail.com>
Cc: Ian Rogers <irogers@google.com>,
Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Mark Rutland <mark.rutland@arm.com>, Jiri Olsa <jolsa@redhat.com>,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org
Subject: Re: [PATCH 17/20] perf trace: free syscall tp fields in evsel->priv
Date: Thu, 15 Jul 2021 17:35:44 -0300 [thread overview]
Message-ID: <YPCcIIT4CvbmPen+@kernel.org> (raw)
In-Reply-To: <46526611904ec5ff2768b59014e3afce8e0197d1.1626343282.git.rickyman7@gmail.com>
Em Thu, Jul 15, 2021 at 06:07:22PM +0200, Riccardo Mancini escreveu:
> ASan reports several memory leaks running the perf test
> "88: Check open filename arg using perf trace + vfs_getname".
> The third of these leaks is related to evsel->priv fields of sycalls never
> being deallocated.
>
> This patch adds the function evlist__free_syscall_tp_fields which
> iterates over all evsels in evlist, matching syscalls, and calling the
> missing frees.
> This new function is called at the end of trace__run, right before
> calling evlist__delete.
Thanks, applied.
- Arnaldo
> Signed-off-by: Riccardo Mancini <rickyman7@gmail.com>
> ---
> tools/perf/builtin-trace.c | 17 ++++++++++++++++-
> 1 file changed, 16 insertions(+), 1 deletion(-)
>
> diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
> index d67f02d237eb0c7e..d9c65d55a9ae7526 100644
> --- a/tools/perf/builtin-trace.c
> +++ b/tools/perf/builtin-trace.c
> @@ -3103,6 +3103,21 @@ static struct evsel *evsel__new_pgfault(u64 config)
> return evsel;
> }
>
> +static void evlist__free_syscall_tp_fields(struct evlist *evlist)
> +{
> + struct evsel *evsel;
> +
> + evlist__for_each_entry(evlist, evsel) {
> + struct evsel_trace *et = evsel->priv;
> +
> + if (!et || !evsel->tp_format || strcmp(evsel->tp_format->system, "syscalls"))
> + continue;
> +
> + free(et->fmt);
> + free(et);
> + }
> +}
> +
> static void trace__handle_event(struct trace *trace, union perf_event *event, struct perf_sample *sample)
> {
> const u32 type = event->header.type;
> @@ -4138,7 +4153,7 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
>
> out_delete_evlist:
> trace__symbols__exit(trace);
> -
> + evlist__free_syscall_tp_fields(evlist);
> evlist__delete(evlist);
> cgroup__put(trace->cgroup);
> trace->evlist = NULL;
> --
> 2.31.1
>
--
- Arnaldo
next prev parent reply other threads:[~2021-07-15 20:35 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-15 16:07 [PATCH 00/20] perf: fix several memory leaks reported by ASan on perf-test Riccardo Mancini
2021-07-15 16:07 ` [PATCH 01/20] perf nsinfo: fix refcounting Riccardo Mancini
2021-07-15 19:02 ` Arnaldo Carvalho de Melo
2021-07-15 19:07 ` Arnaldo Carvalho de Melo
2021-07-15 19:20 ` Arnaldo Carvalho de Melo
2022-01-05 6:19 ` Krister Johansen
2022-01-06 20:27 ` Arnaldo Carvalho de Melo
2022-01-06 20:34 ` Arnaldo Carvalho de Melo
2021-07-15 19:44 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 02/20] perf env: fix sibling_dies memory leak Riccardo Mancini
2021-07-15 19:49 ` Arnaldo Carvalho de Melo
2021-07-16 13:13 ` Riccardo Mancini
2021-07-15 16:07 ` [PATCH 03/20] perf test: session_topology: delete session->evlist Riccardo Mancini
2021-07-15 19:51 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 04/20] perf test: event_update: fix memory leak of evlist Riccardo Mancini
2021-07-15 19:54 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 05/20] perf test: event_update: fix memory leak of unit Riccardo Mancini
2021-07-15 19:58 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 06/20] perf dso: fix memory leak in dso__new_map Riccardo Mancini
2021-07-15 20:01 ` Arnaldo Carvalho de Melo
2021-07-15 20:07 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 07/20] perf test: maps__merge_in: fix memory leak of maps Riccardo Mancini
2021-07-15 20:10 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 08/20] perf env: fix memory leak of cpu_pmu_caps Riccardo Mancini
2021-07-15 20:12 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 09/20] perf report: free generated help strings for sort option Riccardo Mancini
2021-07-15 20:15 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 10/20] perf inject: close inject.output Riccardo Mancini
2021-07-15 20:17 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 11/20] perf session: cleanup trace_event Riccardo Mancini
2021-07-15 20:21 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 12/20] perf script: release zstd data Riccardo Mancini
2021-07-15 20:23 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 13/20] perf script: fix memory leaks in perf_script Riccardo Mancini
2021-07-15 20:25 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 14/20] perf util/lzma: close lzma stream Riccardo Mancini
2021-07-15 20:31 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 15/20] perf trace: free malloc'd trace fields on exit Riccardo Mancini
2021-07-15 20:32 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 16/20] perf trace: free syscall->arg_fmt Riccardo Mancini
2021-07-15 20:35 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 17/20] perf trace: free syscall tp fields in evsel->priv Riccardo Mancini
2021-07-15 20:35 ` Arnaldo Carvalho de Melo [this message]
2021-07-15 16:07 ` [PATCH 18/20] perf trace: free strings in trace__parse_events_option Riccardo Mancini
2021-07-15 20:36 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 19/20] perf test: bpf: free obj_buf Riccardo Mancini
2021-07-15 20:39 ` Arnaldo Carvalho de Melo
2021-07-16 16:50 ` Arnaldo Carvalho de Melo
2021-07-15 16:07 ` [PATCH 20/20] perf util/probe-file: delete namelist on error in del_events Riccardo Mancini
2021-07-15 20:41 ` Arnaldo Carvalho de Melo
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