From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0021D3376BE; Tue, 26 Aug 2025 13:43:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756215813; cv=none; b=OFwOlh0WryBMSaSFX9ZX+Z8k0nAS1SSPbbkx7UNLgofdbwA6pYVj9QKERKyBF66V5Uh89sFp2xYhO33K29oikNP5DKnVNuuy/OhzAty5nPj9/l4oyEowmoB0Lps4Cnpxog3KuiAj3xrRDLKYxixuDbJSEYgHC4V3TmdIGTqjZSI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756215813; c=relaxed/simple; bh=ho8KNqDjod76FrQ5MHMWI+QKskQ+qpt6qkAXK0/u84c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=J2DDiqxECHmp0y/GOuf32P29qyyPUzHMhqe921h3kUw299tM9Oq+G8VHBhT93HfKlzsQm9EQ82sKemP8pdJ7QzWUh0Q584w6AJDZyHda9sRz3kMsJc++FqH0VheOvBe7Gyvreh1cDz6BLu16/QATULNAXr2K6x+qd5EF/dJO2uI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=LrWgCyHA; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="LrWgCyHA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 823A8C4CEF1; Tue, 26 Aug 2025 13:43:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756215812; bh=ho8KNqDjod76FrQ5MHMWI+QKskQ+qpt6qkAXK0/u84c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LrWgCyHAwS4660yMuxrHZZ4bUfJS69PHS+hXhkHUbvLVeC7aBjQGaao6ItfmJ0tnL AaSj58tBNsmuV8wicuPH0/tRA/VMsWCNi6CG3DYCIJq43opCb4B+aojO49tf+kNkOI mTp5EKfmH1hmr22XeDmy/tOlhYFpVs2eH9nEfi3U= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ian Rogers , Namhyung Kim , Sasha Levin Subject: [PATCH 5.15 176/644] perf sched: Fix memory leaks for evsel->priv in timehist Date: Tue, 26 Aug 2025 13:04:27 +0200 Message-ID: <20250826110950.830693048@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110946.507083938@linuxfoundation.org> References: <20250826110946.507083938@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Namhyung Kim [ Upstream commit 117e5c33b1c44037af016d77ce6c0b086d55535f ] It uses evsel->priv to save per-cpu timing information. It should be freed when the evsel is released. Add the priv destructor for evsel same as thread to handle that. Fixes: 49394a2a24c78ce0 ("perf sched timehist: Introduce timehist command") Reviewed-by: Ian Rogers Tested-by: Ian Rogers Link: https://lore.kernel.org/r/20250703014942.1369397-6-namhyung@kernel.org Signed-off-by: Namhyung Kim Signed-off-by: Sasha Levin --- tools/perf/builtin-sched.c | 12 ++++++++++++ tools/perf/util/evsel.c | 11 +++++++++++ tools/perf/util/evsel.h | 2 ++ 3 files changed, 25 insertions(+) diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index 19e96141e7b4..95a549fdabe0 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -1902,6 +1902,16 @@ static u64 evsel__get_time(struct evsel *evsel, u32 cpu) return r->last_time[cpu]; } +static void timehist__evsel_priv_destructor(void *priv) +{ + struct evsel_runtime *r = priv; + + if (r) { + free(r->last_time); + free(r); + } +} + static int comm_width = 30; static char *timehist_get_commstr(struct thread *thread) @@ -3039,6 +3049,8 @@ static int perf_sched__timehist(struct perf_sched *sched) setup_pager(); + evsel__set_priv_destructor(timehist__evsel_priv_destructor); + /* prefer sched_waking if it is captured */ if (evlist__find_tracepoint_by_name(session->evlist, "sched:sched_waking")) handlers[1].handler = timehist_sched_wakeup_ignore; diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index c19a583ca9f6..f14c83e6829a 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -1416,6 +1416,15 @@ static void evsel__free_config_terms(struct evsel *evsel) free_config_terms(&evsel->config_terms); } +static void (*evsel__priv_destructor)(void *priv); + +void evsel__set_priv_destructor(void (*destructor)(void *priv)) +{ + assert(evsel__priv_destructor == NULL); + + evsel__priv_destructor = destructor; +} + void evsel__exit(struct evsel *evsel) { assert(list_empty(&evsel->core.node)); @@ -1436,6 +1445,8 @@ void evsel__exit(struct evsel *evsel) hashmap__free(evsel->per_pkg_mask); evsel->per_pkg_mask = NULL; zfree(&evsel->metric_events); + if (evsel__priv_destructor) + evsel__priv_destructor(evsel->priv); perf_evsel__object.fini(evsel); } diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 0492cafac443..d39d8aab3769 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -231,6 +231,8 @@ void evsel__init(struct evsel *evsel, struct perf_event_attr *attr, int idx); void evsel__exit(struct evsel *evsel); void evsel__delete(struct evsel *evsel); +void evsel__set_priv_destructor(void (*destructor)(void *priv)); + struct callchain_param; void evsel__config(struct evsel *evsel, struct record_opts *opts, -- 2.39.5