From patchwork Mon Sep 9 09:28:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13796486 X-Patchwork-Delegate: geert@linux-m68k.org Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) (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 EA97A1B372D; Mon, 9 Sep 2024 09:19:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.191 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725873576; cv=none; b=GUxdwOkkTWvw3wmk5Ox1qeg/zGiaQMUSV2MlLb43pBo90+DecZV3Rwe9O5FVzrNWCZI/krUlcWHEcv5SZPoBgtrRJNQOOJP0VEpv9GmaISYRxOvt8JhPJ+y2HRSEdmUcR/hHwT/q4FQvCd78ZffhzCWl03fOD7GKk8XyiD0v+w0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725873576; c=relaxed/simple; bh=LicYL7LrvVglcjIdHpUhMyshZw8yy0NxwCI3fniCcV8=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=NEfCxCROJx/M8bhjUZYEb7mCafC9h8RPKlVzZa+Mb+A/n82gHUagJlUsQVL3YWLX8KDamFJRj+rEVFW34k3pQHt9pMuRGnTbf/ug2kU3cryCP3jIlRkzAzcl2m4yQUgfwAjLeKNa3DO0NgIntlLDP3knvsPONOcfIivEWLyZlMk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.191 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.162.112]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4X2LmF21jLz1HJPf; Mon, 9 Sep 2024 17:15:57 +0800 (CST) Received: from kwepemh500013.china.huawei.com (unknown [7.202.181.146]) by mail.maildlp.com (Postfix) with ESMTPS id 2CBA31400D4; Mon, 9 Sep 2024 17:19:30 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemh500013.china.huawei.com (7.202.181.146) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Mon, 9 Sep 2024 17:19:29 +0800 From: Jinjie Ruan To: , , , , , , , , , , CC: Subject: [PATCH] net: rswitch: Fix a possible memory leak in rswitch_phy_device_init() Date: Mon, 9 Sep 2024 17:28:25 +0800 Message-ID: <20240909092825.1117058-1-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To kwepemh500013.china.huawei.com (7.202.181.146) of_phy_find_device() calls bus_find_device(), which calls get_device() on the returned struct device * to increment the refcount. The current implementation does not decrement the refcount, which causes memory leak. So add the missing phy_device_free() call to decrement the refcount via put_device() to balance the refcount. Fixes: 0df024d0f1d3 ("net: renesas: rswitch: Add host_interfaces setting") Signed-off-by: Jinjie Ruan --- drivers/net/ethernet/renesas/rswitch.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c index ff50e20856ec..69a67bd75f33 100644 --- a/drivers/net/ethernet/renesas/rswitch.c +++ b/drivers/net/ethernet/renesas/rswitch.c @@ -1404,6 +1404,7 @@ static int rswitch_phy_device_init(struct rswitch_device *rdev) goto out; __set_bit(rdev->etha->phy_interface, phydev->host_interfaces); phydev->mac_managed_pm = true; + phy_device_free(phydev); phydev = of_phy_connect(rdev->ndev, phy, rswitch_adjust_link, 0, rdev->etha->phy_interface);