From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794062880; b=IafF31w6wHZMAFtzKtohgVJtbGnt1IrMFc38TlhRsc247DyiG2fwyR72neij0USKQ5WW VZkXyBUQJeRiXPR3J8P5iuOzstYaWdTGBZJ1Hvc+ieJIjleDG7vyHUZf3qRncFexo7Yjm XAVWglK9DHutfUlZVLihuymLCXaqiyF5GIhVgKZz8ozGquHeCk9DRanmj/BBonyX64lhj l3PX0n6Qv/d4xYgSzQhWvsZJ3JMo5+wlOTgBOQagF4jC0Um9p0CJ8lsR1CDOkwxtM416H 7guoM5Y262+DbuVLJEFzzC1PUFs1vac2VLb/f5008NKbn7oYL9Opvai7rguNTi4ikcg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794062880; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=aNRWQLk4WvLizWP8XTNpYHns9V46a1I7kVAS8JehDZA=; b=h45qsiOp1hmzooAButnjlzRwoWBnyyKmwnP/IufBE5mLQiVvBQRBIb4U21uYC49Y0RIC bI7IhxGP2PiajuVwnVd/7QX/shpGTLSamiFUlE5e3kTSjGA9ly/Gk7xNoNlKGxasgz59m hJoeNWdWWGqDc/lZ69xprBhnA2kwZxl6rc0HYEoveXkpJ+TenOF5HdZOYaAGoRYdfMFpQ FcJnB1tX9WLnZkOjvQQIpywM25BCqu1BQvKGbkavYf0yvLkkR/CpVmw66wUtCTsUli3t7 rA37wIrIBbVb+Jhl0km5+aTPVTEdPFVoRJTtFFeuHEls2Ck4WKZP+K/LL/3ZmPmCOkw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b="BSVMvfO/"; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D94E4606A326; Sat, 7 Nov 2026 14:47:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=BSVMvfO/ Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8621E1F0089F; Sat, 7 Nov 2026 14:47:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794062879; bh=aNRWQLk4WvLizWP8XTNpYHns9V46a1I7kVAS8JehDZA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=BSVMvfO//8qz4QmV9jTtv9USP4q+RpBAXSlr3rEyotPMwWzAbEbqbFLRkklf7SsiM RJyx+euSXBouBKeHtsrF+XBppfkAjOARGZD5+AHlJZj3U59egFI4b5xl/H6Iuaow5o DaA+6aJPpTfikCZ/whadVV1dp46wueWkgWWCd90M= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Wentao Liang , Mark Brown , Sasha Levin Subject: [PATCH 6.18 161/869] regulator: core: Fix c_rdev reference leak in regulator_resolve_coupling() Date: Sat, 7 Nov 2026 08:47:23 -0500 Message-ID: <20261107134857.739141192@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134852.069646174@linuxfoundation.org> References: <20261107134852.069646174@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Wentao Liang [ Upstream commit c41b69e9f76fd9632662714c1d37860468e8d773 ] of_parse_coupled_regulator() returns the coupled regulator with its device reference incremented, but regulator_resolve_coupling() returns without dropping it when the coupled regulator belongs to a different coupler, leaking the reference. Fixes: d8ca7d184b33 ("regulator: core: Introduce API for regulators coupling customization") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang Link: https://patch.msgid.link/20260917142535.2156720-1-vulab@iscas.ac.cn Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/regulator/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index eae756c82c262..ad7f26b14621b 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -5659,6 +5659,7 @@ static void regulator_resolve_coupling(struct regulator_dev *rdev) if (c_rdev->coupling_desc.coupler != coupler) { rdev_err(rdev, "coupler mismatch with %s\n", rdev_get_name(c_rdev)); + put_device(&c_rdev->dev); return; } -- 2.53.0