From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Jiri Olsa <jolsa@redhat.com>
Cc: Ian Rogers <irogers@google.com>,
Riccardo Mancini <rickyman7@gmail.com>,
Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Adrian Hunter <adrian.hunter@intel.com>,
Kan Liang <kan.liang@linux.intel.com>,
Leo Yan <leo.yan@linaro.org>,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] perf session: add missing evlist__delete when deleting a session
Date: Thu, 1 Jul 2021 15:04:59 -0300 [thread overview]
Message-ID: <YN4Dy9qLrop4pM+9@kernel.org> (raw)
In-Reply-To: <YNXD2xN2wrZgdbwO@krava>
Em Fri, Jun 25, 2021 at 01:54:03PM +0200, Jiri Olsa escreveu:
> On Thu, Jun 24, 2021 at 10:39:34PM -0700, Ian Rogers wrote:
> > On Thu, Jun 24, 2021 at 4:20 PM Riccardo Mancini <rickyman7@gmail.com> wrote:
> > >
> > > ASan reports a memory leak caused by evlist not being deleted on exit in
> > > perf-report, perf-script and perf-data.
> > > The problem is caused by evlist->session not being deleted, which is
> > > allocated in perf_session__read_header, called in perf_session__new if
> > > perf_data is in read mode.
> > > In case of write mode, the session->evlist is filled by the caller.
> > > This patch solves the problem by calling evlist__delete in
> > > perf_session__delete if perf_data is in read mode.
>
> ugh, I'm surprised we did not free that.. and can't find
> in git log we ever did ;-) I briefly check commands using
> sessions and looks like it's correct
>
> Acked-by: Jiri Olsa <jolsa@redhat.com>
>
> >
> > Acked-by: Ian Rogers <irogers@google.com>
> >
> > It is messy that in read mode the session owns the evlist, but
> > otherwise not. Imo, it'd be nice to make the ownership unconditional.
>
> yep, would be nice
Thanks, applied.
Riccardo, next time please consider adding a Fixes: tag so that the
stable@kernel.org guys can pick this for stable releases.
- Arnaldo
prev parent reply other threads:[~2021-07-01 18:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-24 23:19 [PATCH v2] perf session: add missing evlist__delete when deleting a session Riccardo Mancini
2021-06-25 5:39 ` Ian Rogers
2021-06-25 11:54 ` Jiri Olsa
2021-06-25 15:45 ` Riccardo Mancini
2021-06-27 17:29 ` Jiri Olsa
2021-07-01 18:04 ` Arnaldo Carvalho de Melo [this message]
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