From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 B451A3DA5C3; Thu, 4 Jun 2026 20:11:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780603901; cv=none; b=L3orvLZxdO20uE7A7080YTYR02XJJi4LVWMxoSLyi2aPepnoxJd6SxQRfZawdwUJjcYisdLfBaSHT22m2TtQu0B92hR3T0UErxmMg0agOU/Xz8nfEmExxNjTcTeCUn12EWJ379C1ak6UdPvhoMU+oHNL+O8uBQHGX0ZJs6X+Wtg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780603901; c=relaxed/simple; bh=hVL3CNwOm4qEIBGaXnHed+ZljEbyAhdPKlmaoMqrM3g=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Jr2PeR3vnhHWEjfj6GNAc9CARjg8pH5KT0cUiRcsKkiqza4TuSvNon8j9xHIv+vfvCEH5MKM4QR/wRKx4BdgdX7eCVkgRTeVgkM955aePIzvdHuQ8EdK1Al/SMWB1v3lfCBA1IluwU2ELENzD1IEGyfYMAV7DPncy9FssyOlND4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MbzSktzR; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="MbzSktzR" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1F1631F00893; Thu, 4 Jun 2026 20:11:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780603898; bh=vRh5S56EQv1X1h39iR1LYgRUJbiu+AHhqUAOnoJvepg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=MbzSktzRyWCS0JqU6fSU9RKMqfq+mnWa/ybzGElA7cv3iQGrIo42RITInr/fkiw/2 2mukSAZLptBlVOxNNzGXWIHR9LKlqaJtKZpFimbKoJOPLRV11M6Uh4Jbd68AAMyRjM xUEoW/DZbrUbdIz43VFQaMdFYbQl/fcHYRUU/qXP019mqqI5rJBMfFfUqZOLoam29I Sy3ZvmoAhQ6ZZZSFYtVHI9CNn1LH9a9hgAplFzSB46Z9zpICRpO3rcIBtTRPnN6QE1 3r0XxkxRGrqOKqq7C6SS8+b/I3eRrK7QN0UfORcHPJ9E7J2KiER10BOO/Upnxh5FTT BMcJPa/Oi2aNQ== From: Arnaldo Carvalho de Melo To: Namhyung Kim Cc: Ingo Molnar , Thomas Gleixner , James Clark , Jiri Olsa , Ian Rogers , Adrian Hunter , Clark Williams , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Arnaldo Carvalho de Melo , sashiko-bot , "Claude Opus 4.6" Subject: [PATCH 2/4] perf sched: Fix thread reference leak in latency_switch_event Date: Thu, 4 Jun 2026 17:11:14 -0300 Message-ID: <20260604201119.1702338-3-acme@kernel.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260604201119.1702338-1-acme@kernel.org> References: <20260604201119.1702338-1-acme@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Arnaldo Carvalho de Melo In latency_switch_event(), after acquiring thread references for sched_out and sched_in via machine__findnew_thread(), the first add_sched_out_event() failure path does 'return -1', bypassing the out_put label that calls thread__put() on both references. The second and third add_sched_out_event() failures correctly use 'goto out_put'. Fix the first one to match. Fixes: b91fc39f4ad7 ("perf machine: Protect the machine->threads with a rwlock") Reported-by: sashiko-bot Assisted-by: Claude Opus 4.6 Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-sched.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/builtin-sched.c b/tools/perf/builtin-sched.c index e7bd3f331cb8e889..13b801496a01271e 100644 --- a/tools/perf/builtin-sched.c +++ b/tools/perf/builtin-sched.c @@ -1180,7 +1180,7 @@ static int latency_switch_event(struct perf_sched *sched, } } if (add_sched_out_event(out_events, prev_state, timestamp)) - return -1; + goto out_put; in_events = thread_atoms_search(&sched->atom_root, sched_in, &sched->cmp_pid); if (!in_events) { -- 2.54.0