From patchwork Wed Feb 27 04:40:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Yang X-Patchwork-Id: 10831053 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 85B4B1575 for ; Wed, 27 Feb 2019 04:40:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 71F472D316 for ; Wed, 27 Feb 2019 04:40:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 65F932D31F; Wed, 27 Feb 2019 04:40:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7CD132D316 for ; Wed, 27 Feb 2019 04:40:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729356AbfB0Ekm (ORCPT ); Tue, 26 Feb 2019 23:40:42 -0500 Received: from mxhk.zte.com.cn ([63.217.80.70]:44054 "EHLO mxhk.zte.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729265AbfB0Ekm (ORCPT ); Tue, 26 Feb 2019 23:40:42 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id CEF291E758D9ADE3065E; Wed, 27 Feb 2019 12:40:38 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x1R4eWI3003595; Wed, 27 Feb 2019 12:40:32 +0800 (GMT-8) (envelope-from wen.yang99@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019022712405358-2029105 ; Wed, 27 Feb 2019 12:40:53 +0800 From: Wen Yang To: benh@kernel.crashing.org Cc: paulus@samba.org, mpe@ellerman.id.au, tyreld@linux.vnet.ibm.com, bhelgaas@google.com, linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ryder.lee@mediatek.com, lorenzo.pieralisi@arm.com, matthias.bgg@gmail.com, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, rjui@broadcom.com, sbranden@broadcom.com, bcm-kernel-feedback-list@broadcom.com, thomas.petazzoni@bootlin.com, shawn.lin@rock-chips.com, heiko@sntech.de, linux-rockchip@lists.infradead.org, minghuan.Lian@nxp.com, mingkai.hu@nxp.com, roy.zang@nxp.com, hayashi.kunihiko@socionext.com, yamada.masahiro@socionext.com, kishon@ti.com, linux-omap@vger.kernel.org, wang.yi59@zte.com.cn, Wen Yang Subject: [PATCH 1/8] PCI: dwc: pci-dra7xx: fix a leaked reference by adding missing of_node_put Date: Wed, 27 Feb 2019 12:40:36 +0800 Message-Id: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-02-27 12:40:53, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-02-27 12:40:25, Serialize complete at 2019-02-27 12:40:25 X-MAIL: mse01.zte.com.cn x1R4eWI3003595 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The call to of_get_next_child returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. irq_domain_add_linear also calls of_node_get to increase refcount, so irq_domain will not be affected when it is released. Detected by coccinelle with the following warnings: ./drivers/pci/controller/dwc/pci-dra7xx.c:252:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 241, but without a corresponding object release within this function. ./drivers/pci/controller/dwc/pci-dra7xx.c:255:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 241, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: Kishon Vijay Abraham I Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: linux-omap@vger.kernel.org Cc: linux-pci@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/controller/dwc/pci-dra7xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c index ae84a69..627c91d 100644 --- a/drivers/pci/controller/dwc/pci-dra7xx.c +++ b/drivers/pci/controller/dwc/pci-dra7xx.c @@ -247,6 +247,7 @@ static int dra7xx_pcie_init_irq_domain(struct pcie_port *pp) dra7xx->irq_domain = irq_domain_add_linear(pcie_intc_node, PCI_NUM_INTX, &intx_domain_ops, pp); + of_node_put(pcie_intc_node); if (!dra7xx->irq_domain) { dev_err(dev, "Failed to get a INTx IRQ domain\n"); return -ENODEV; From patchwork Wed Feb 27 04:40:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Yang X-Patchwork-Id: 10831087 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 75C311575 for ; Wed, 27 Feb 2019 04:41:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5E7AA2D316 for ; Wed, 27 Feb 2019 04:41:32 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5019B2D31F; Wed, 27 Feb 2019 04:41:32 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D9FBD2D316 for ; Wed, 27 Feb 2019 04:41:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729658AbfB0Ekx (ORCPT ); Tue, 26 Feb 2019 23:40:53 -0500 Received: from out1.zte.com.cn ([202.103.147.172]:33144 "EHLO mxct.zte.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729435AbfB0Ekx (ORCPT ); Tue, 26 Feb 2019 23:40:53 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id 7D76CE85EDBE605184E3; Wed, 27 Feb 2019 12:40:42 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x1R4eaTr003644; Wed, 27 Feb 2019 12:40:36 +0800 (GMT-8) (envelope-from wen.yang99@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019022712405722-2029107 ; Wed, 27 Feb 2019 12:40:57 +0800 From: Wen Yang To: benh@kernel.crashing.org Cc: paulus@samba.org, mpe@ellerman.id.au, tyreld@linux.vnet.ibm.com, bhelgaas@google.com, linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ryder.lee@mediatek.com, lorenzo.pieralisi@arm.com, matthias.bgg@gmail.com, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, rjui@broadcom.com, sbranden@broadcom.com, bcm-kernel-feedback-list@broadcom.com, thomas.petazzoni@bootlin.com, shawn.lin@rock-chips.com, heiko@sntech.de, linux-rockchip@lists.infradead.org, minghuan.Lian@nxp.com, mingkai.hu@nxp.com, roy.zang@nxp.com, hayashi.kunihiko@socionext.com, yamada.masahiro@socionext.com, kishon@ti.com, linux-omap@vger.kernel.org, wang.yi59@zte.com.cn, Wen Yang Subject: [PATCH 2/8] PCI: uniphier: fix a leaked reference by adding missing of_node_put Date: Wed, 27 Feb 2019 12:40:37 +0800 Message-Id: <1551242443-27300-2-git-send-email-wen.yang99@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> References: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-02-27 12:40:57, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-02-27 12:40:29, Serialize complete at 2019-02-27 12:40:29 X-MAIL: mse01.zte.com.cn x1R4eaTr003644 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The call to of_get_child_by_name returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. irq_domain_add_linear also calls of_node_get to increase refcount, so irq_domain will not be affected when it is released. Detected by coccinelle with the following warnings: ./drivers/pci/controller/dwc/pcie-uniphier.c:283:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 274, but without a corresponding object release within this function. ./drivers/pci/controller/dwc/pcie-uniphier.c:290:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 274, but without a corresponding object release within this function. ./drivers/pci/controller/dwc/pcie-uniphier.c:296:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 274, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: Kunihiko Hayashi Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: Masahiro Yamada Cc: linux-pci@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/controller/dwc/pcie-uniphier.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-uniphier.c b/drivers/pci/controller/dwc/pcie-uniphier.c index d5dc402..3f30ee4 100644 --- a/drivers/pci/controller/dwc/pcie-uniphier.c +++ b/drivers/pci/controller/dwc/pcie-uniphier.c @@ -270,6 +270,7 @@ static int uniphier_pcie_config_legacy_irq(struct pcie_port *pp) struct uniphier_pcie_priv *priv = to_uniphier_pcie(pci); struct device_node *np = pci->dev->of_node; struct device_node *np_intc; + int ret = 0; np_intc = of_get_child_by_name(np, "legacy-interrupt-controller"); if (!np_intc) { @@ -280,20 +281,24 @@ static int uniphier_pcie_config_legacy_irq(struct pcie_port *pp) pp->irq = irq_of_parse_and_map(np_intc, 0); if (!pp->irq) { dev_err(pci->dev, "Failed to get an IRQ entry in legacy-interrupt-controller\n"); - return -EINVAL; + ret = -EINVAL; + goto out_put_node; } priv->legacy_irq_domain = irq_domain_add_linear(np_intc, PCI_NUM_INTX, &uniphier_intx_domain_ops, pp); if (!priv->legacy_irq_domain) { dev_err(pci->dev, "Failed to get INTx domain\n"); - return -ENODEV; + ret = -ENODEV; + goto out_put_node; } irq_set_chained_handler_and_data(pp->irq, uniphier_pcie_irq_handler, pp); - return 0; +out_put_node: + of_node_put(np_intc); + return ret; } static int uniphier_pcie_host_init(struct pcie_port *pp) From patchwork Wed Feb 27 04:40:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Yang X-Patchwork-Id: 10831057 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 46BF9922 for ; Wed, 27 Feb 2019 04:40:51 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 347EA2D316 for ; Wed, 27 Feb 2019 04:40:51 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 17E7A2D31F; Wed, 27 Feb 2019 04:40:51 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BF84F2D31B for ; Wed, 27 Feb 2019 04:40:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729475AbfB0Ekt (ORCPT ); Tue, 26 Feb 2019 23:40:49 -0500 Received: from mxhk.zte.com.cn ([63.217.80.70]:27070 "EHLO mxhk.zte.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729265AbfB0Ekt (ORCPT ); Tue, 26 Feb 2019 23:40:49 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id 5D10086307C4E05DC5FE; Wed, 27 Feb 2019 12:40:46 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x1R4eduq003660; Wed, 27 Feb 2019 12:40:39 +0800 (GMT-8) (envelope-from wen.yang99@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019022712405994-2029110 ; Wed, 27 Feb 2019 12:40:59 +0800 From: Wen Yang To: benh@kernel.crashing.org Cc: paulus@samba.org, mpe@ellerman.id.au, tyreld@linux.vnet.ibm.com, bhelgaas@google.com, linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ryder.lee@mediatek.com, lorenzo.pieralisi@arm.com, matthias.bgg@gmail.com, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, rjui@broadcom.com, sbranden@broadcom.com, bcm-kernel-feedback-list@broadcom.com, thomas.petazzoni@bootlin.com, shawn.lin@rock-chips.com, heiko@sntech.de, linux-rockchip@lists.infradead.org, minghuan.Lian@nxp.com, mingkai.hu@nxp.com, roy.zang@nxp.com, hayashi.kunihiko@socionext.com, yamada.masahiro@socionext.com, kishon@ti.com, linux-omap@vger.kernel.org, wang.yi59@zte.com.cn, Wen Yang Subject: [PATCH 3/8] PCI: dwc: layerscape: fix a leaked reference by adding missing of_node_put Date: Wed, 27 Feb 2019 12:40:38 +0800 Message-Id: <1551242443-27300-3-git-send-email-wen.yang99@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> References: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-02-27 12:41:00, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-02-27 12:40:31, Serialize complete at 2019-02-27 12:40:31 X-MAIL: mse01.zte.com.cn x1R4eduq003660 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The call to of_parse_phandle returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./drivers/pci/controller/dwc/pci-layerscape.c:204:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 198, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: Minghuan Lian Cc: Mingkai Hu Cc: Roy Zang Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-pci@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/controller/dwc/pci-layerscape.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/controller/dwc/pci-layerscape.c b/drivers/pci/controller/dwc/pci-layerscape.c index ce45bde2..3a5fa26 100644 --- a/drivers/pci/controller/dwc/pci-layerscape.c +++ b/drivers/pci/controller/dwc/pci-layerscape.c @@ -201,6 +201,7 @@ static int ls_pcie_msi_host_init(struct pcie_port *pp) return -EINVAL; } + of_node_put(msi_node); return 0; } From patchwork Wed Feb 27 04:40:39 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Yang X-Patchwork-Id: 10831091 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8F820922 for ; Wed, 27 Feb 2019 04:41:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7C0BC2D316 for ; Wed, 27 Feb 2019 04:41:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6F1E12D31F; Wed, 27 Feb 2019 04:41:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CDCA02D316 for ; Wed, 27 Feb 2019 04:41:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729643AbfB0Ekx (ORCPT ); Tue, 26 Feb 2019 23:40:53 -0500 Received: from out1.zte.com.cn ([202.103.147.172]:33276 "EHLO mxct.zte.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729265AbfB0Ekx (ORCPT ); Tue, 26 Feb 2019 23:40:53 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id 8A565DC04187BD37D4FC; Wed, 27 Feb 2019 12:40:47 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x1R4efqI003675; Wed, 27 Feb 2019 12:40:41 +0800 (GMT-8) (envelope-from wen.yang99@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019022712410218-2029116 ; Wed, 27 Feb 2019 12:41:02 +0800 From: Wen Yang To: benh@kernel.crashing.org Cc: paulus@samba.org, mpe@ellerman.id.au, tyreld@linux.vnet.ibm.com, bhelgaas@google.com, linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ryder.lee@mediatek.com, lorenzo.pieralisi@arm.com, matthias.bgg@gmail.com, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, rjui@broadcom.com, sbranden@broadcom.com, bcm-kernel-feedback-list@broadcom.com, thomas.petazzoni@bootlin.com, shawn.lin@rock-chips.com, heiko@sntech.de, linux-rockchip@lists.infradead.org, minghuan.Lian@nxp.com, mingkai.hu@nxp.com, roy.zang@nxp.com, hayashi.kunihiko@socionext.com, yamada.masahiro@socionext.com, kishon@ti.com, linux-omap@vger.kernel.org, wang.yi59@zte.com.cn, Wen Yang Subject: [PATCH 4/8] PCI: rockchip: fix a leaked reference by adding missing of_node_put Date: Wed, 27 Feb 2019 12:40:39 +0800 Message-Id: <1551242443-27300-4-git-send-email-wen.yang99@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> References: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-02-27 12:41:02, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-02-27 12:40:34, Serialize complete at 2019-02-27 12:40:34 X-MAIL: mse01.zte.com.cn x1R4efqI003675 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The call to of_get_child_by_name returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. irq_domain_add_linear also calls of_node_get to increase refcount, so irq_domain will not be affected when it is released. Detected by coccinelle with the following warnings: ./drivers/pci/controller/pcie-rockchip-host.c:729:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 718, but without a corresponding object release within this function. ./drivers/pci/controller/pcie-rockchip-host.c:732:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 718, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: Shawn Lin Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: Heiko Stuebner Cc: linux-pci@vger.kernel.org Cc: linux-rockchip@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/controller/pcie-rockchip-host.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/controller/pcie-rockchip-host.c index 1372d27..8d20f17 100644 --- a/drivers/pci/controller/pcie-rockchip-host.c +++ b/drivers/pci/controller/pcie-rockchip-host.c @@ -724,6 +724,7 @@ static int rockchip_pcie_init_irq_domain(struct rockchip_pcie *rockchip) rockchip->irq_domain = irq_domain_add_linear(intc, PCI_NUM_INTX, &intx_domain_ops, rockchip); + of_node_put(intc); if (!rockchip->irq_domain) { dev_err(dev, "failed to get a INTx IRQ domain\n"); return -EINVAL; From patchwork Wed Feb 27 04:40:40 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Yang X-Patchwork-Id: 10831059 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 43B8F1575 for ; Wed, 27 Feb 2019 04:41:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2BCCC2D31F for ; Wed, 27 Feb 2019 04:41:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1EC5F2D327; Wed, 27 Feb 2019 04:41:00 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 977782D316 for ; Wed, 27 Feb 2019 04:40:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729757AbfB0Ek4 (ORCPT ); Tue, 26 Feb 2019 23:40:56 -0500 Received: from out1.zte.com.cn ([202.103.147.172]:33394 "EHLO mxct.zte.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729674AbfB0Ek4 (ORCPT ); Tue, 26 Feb 2019 23:40:56 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id 69CC474E1EE0FF3A0483; Wed, 27 Feb 2019 12:40:53 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x1R4em8h003706; Wed, 27 Feb 2019 12:40:48 +0800 (GMT-8) (envelope-from wen.yang99@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019022712410885-2029139 ; Wed, 27 Feb 2019 12:41:08 +0800 From: Wen Yang To: benh@kernel.crashing.org Cc: paulus@samba.org, mpe@ellerman.id.au, tyreld@linux.vnet.ibm.com, bhelgaas@google.com, linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ryder.lee@mediatek.com, lorenzo.pieralisi@arm.com, matthias.bgg@gmail.com, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, rjui@broadcom.com, sbranden@broadcom.com, bcm-kernel-feedback-list@broadcom.com, thomas.petazzoni@bootlin.com, shawn.lin@rock-chips.com, heiko@sntech.de, linux-rockchip@lists.infradead.org, minghuan.Lian@nxp.com, mingkai.hu@nxp.com, roy.zang@nxp.com, hayashi.kunihiko@socionext.com, yamada.masahiro@socionext.com, kishon@ti.com, linux-omap@vger.kernel.org, wang.yi59@zte.com.cn, Wen Yang Subject: [PATCH 5/8] PCI: aardvark: fix a leaked reference by adding missing of_node_put Date: Wed, 27 Feb 2019 12:40:40 +0800 Message-Id: <1551242443-27300-5-git-send-email-wen.yang99@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> References: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-02-27 12:41:09, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-02-27 12:40:40, Serialize complete at 2019-02-27 12:40:40 X-MAIL: mse01.zte.com.cn x1R4em8h003706 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The call to of_get_next_child returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. irq_domain_add_linear also calls of_node_get to increase refcount, so irq_domain will not be affected when it is released. Detected by coccinelle with the following warnings: ./drivers/pci/controller/pci-aardvark.c:826:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 798, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: Thomas Petazzoni Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: linux-pci@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/controller/pci-aardvark.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c index 750081c..56ecb16 100644 --- a/drivers/pci/controller/pci-aardvark.c +++ b/drivers/pci/controller/pci-aardvark.c @@ -794,6 +794,7 @@ static int advk_pcie_init_irq_domain(struct advk_pcie *pcie) struct device_node *node = dev->of_node; struct device_node *pcie_intc_node; struct irq_chip *irq_chip; + int ret = 0; pcie_intc_node = of_get_next_child(node, NULL); if (!pcie_intc_node) { @@ -806,8 +807,8 @@ static int advk_pcie_init_irq_domain(struct advk_pcie *pcie) irq_chip->name = devm_kasprintf(dev, GFP_KERNEL, "%s-irq", dev_name(dev)); if (!irq_chip->name) { - of_node_put(pcie_intc_node); - return -ENOMEM; + ret = -ENOMEM; + goto out_put_node; } irq_chip->irq_mask = advk_pcie_irq_mask; @@ -819,11 +820,13 @@ static int advk_pcie_init_irq_domain(struct advk_pcie *pcie) &advk_pcie_irq_domain_ops, pcie); if (!pcie->irq_domain) { dev_err(dev, "Failed to get a INTx IRQ domain\n"); - of_node_put(pcie_intc_node); - return -ENOMEM; + ret = -ENOMEM; + goto out_put_node; } - return 0; +out_put_node: + of_node_put(pcie_intc_node); + return ret; } static void advk_pcie_remove_irq_domain(struct advk_pcie *pcie) From patchwork Wed Feb 27 04:40:41 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Yang X-Patchwork-Id: 10831085 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4B5DA922 for ; Wed, 27 Feb 2019 04:41:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3967C2D316 for ; Wed, 27 Feb 2019 04:41:27 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2D5822D32E; Wed, 27 Feb 2019 04:41:27 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C84EB2D316 for ; Wed, 27 Feb 2019 04:41:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729782AbfB0ElE (ORCPT ); Tue, 26 Feb 2019 23:41:04 -0500 Received: from out1.zte.com.cn ([202.103.147.172]:33594 "EHLO mxct.zte.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729674AbfB0ElD (ORCPT ); Tue, 26 Feb 2019 23:41:03 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id EC684EE095B8F1DF705A; Wed, 27 Feb 2019 12:41:00 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x1R4eoKe003741; Wed, 27 Feb 2019 12:40:50 +0800 (GMT-8) (envelope-from wen.yang99@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019022712411163-2029141 ; Wed, 27 Feb 2019 12:41:11 +0800 From: Wen Yang To: benh@kernel.crashing.org Cc: paulus@samba.org, mpe@ellerman.id.au, tyreld@linux.vnet.ibm.com, bhelgaas@google.com, linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ryder.lee@mediatek.com, lorenzo.pieralisi@arm.com, matthias.bgg@gmail.com, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, rjui@broadcom.com, sbranden@broadcom.com, bcm-kernel-feedback-list@broadcom.com, thomas.petazzoni@bootlin.com, shawn.lin@rock-chips.com, heiko@sntech.de, linux-rockchip@lists.infradead.org, minghuan.Lian@nxp.com, mingkai.hu@nxp.com, roy.zang@nxp.com, hayashi.kunihiko@socionext.com, yamada.masahiro@socionext.com, kishon@ti.com, linux-omap@vger.kernel.org, wang.yi59@zte.com.cn, Wen Yang Subject: [PATCH 6/8] PCI: iproc: fix a leaked reference by adding missing of_node_put Date: Wed, 27 Feb 2019 12:40:41 +0800 Message-Id: <1551242443-27300-6-git-send-email-wen.yang99@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> References: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-02-27 12:41:11, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-02-27 12:40:43, Serialize complete at 2019-02-27 12:40:43 X-MAIL: mse01.zte.com.cn x1R4eoKe003741 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The call to of_parse_phandle returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. iproc_msi_init also calls of_node_get to increase refcount (proc_msi_init -> iproc_msi_alloc_domains -> pci_msi_create_irq_domain -> msi_create_irq_domain -> irq_domain_create_linear -> __irq_domain_add), so irq_domain will not be affected when it is released. Detected by coccinelle with the following warnings: ./drivers/pci/controller/pcie-iproc.c:1323:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1299, but without a corresponding object release within this function. ./drivers/pci/controller/pcie-iproc.c:1330:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1299, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: Ray Jui Cc: Scott Branden Cc: bcm-kernel-feedback-list@broadcom.com Cc: linux-pci@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/controller/pcie-iproc.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/pci/controller/pcie-iproc.c b/drivers/pci/controller/pcie-iproc.c index c20fd6b..9998c5c 100644 --- a/drivers/pci/controller/pcie-iproc.c +++ b/drivers/pci/controller/pcie-iproc.c @@ -1320,14 +1320,18 @@ static int iproc_pcie_msi_enable(struct iproc_pcie *pcie) if (pcie->need_msi_steer) { ret = iproc_pcie_msi_steer(pcie, msi_node); if (ret) - return ret; + goto out_put_node; } /* * If another MSI controller is being used, the call below should fail * but that is okay */ - return iproc_msi_init(pcie, msi_node); + ret = iproc_msi_init(pcie, msi_node); + +out_put_node: + of_node_put(msi_node); + return ret; } static void iproc_pcie_msi_disable(struct iproc_pcie *pcie) From patchwork Wed Feb 27 04:40:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Yang X-Patchwork-Id: 10831079 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D95CA922 for ; Wed, 27 Feb 2019 04:41:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C484B2D316 for ; Wed, 27 Feb 2019 04:41:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B86682D31F; Wed, 27 Feb 2019 04:41:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 607622D316 for ; Wed, 27 Feb 2019 04:41:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729810AbfB0ElH (ORCPT ); Tue, 26 Feb 2019 23:41:07 -0500 Received: from out1.zte.com.cn ([202.103.147.172]:33722 "EHLO mxct.zte.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729797AbfB0ElG (ORCPT ); Tue, 26 Feb 2019 23:41:06 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id C5986E7FC1E71E940983; Wed, 27 Feb 2019 12:41:03 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x1R4er4r003758; Wed, 27 Feb 2019 12:40:53 +0800 (GMT-8) (envelope-from wen.yang99@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019022712411405-2029145 ; Wed, 27 Feb 2019 12:41:14 +0800 From: Wen Yang To: benh@kernel.crashing.org Cc: paulus@samba.org, mpe@ellerman.id.au, tyreld@linux.vnet.ibm.com, bhelgaas@google.com, linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ryder.lee@mediatek.com, lorenzo.pieralisi@arm.com, matthias.bgg@gmail.com, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, rjui@broadcom.com, sbranden@broadcom.com, bcm-kernel-feedback-list@broadcom.com, thomas.petazzoni@bootlin.com, shawn.lin@rock-chips.com, heiko@sntech.de, linux-rockchip@lists.infradead.org, minghuan.Lian@nxp.com, mingkai.hu@nxp.com, roy.zang@nxp.com, hayashi.kunihiko@socionext.com, yamada.masahiro@socionext.com, kishon@ti.com, linux-omap@vger.kernel.org, wang.yi59@zte.com.cn, Wen Yang Subject: [PATCH 7/8] PCI: mediatek: fix a leaked reference by adding missing of_node_put Date: Wed, 27 Feb 2019 12:40:42 +0800 Message-Id: <1551242443-27300-7-git-send-email-wen.yang99@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> References: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-02-27 12:41:14, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-02-27 12:40:45, Serialize complete at 2019-02-27 12:40:45 X-MAIL: mse01.zte.com.cn x1R4er4r003758 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The call to of_get_next_child returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. irq_domain_add_linear also calls of_node_get to increase refcount, so irq_domain will not be affected when it is released. Detected by coccinelle with the following warnings: ./drivers/pci/controller/pcie-mediatek.c:577:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 567, but without a corresponding object release within this function. ./drivers/pci/controller/pcie-mediatek.c:583:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 567, but without a corresponding object release within this function. ./drivers/pci/controller/pcie-mediatek.c:586:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 567, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: Ryder Lee Cc: Lorenzo Pieralisi Cc: Bjorn Helgaas Cc: Matthias Brugger Cc: linux-pci@vger.kernel.org Cc: linux-mediatek@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Acked-by: Honghui Zhang --- drivers/pci/controller/pcie-mediatek.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/controller/pcie-mediatek.c b/drivers/pci/controller/pcie-mediatek.c index 55e471c..e91716a 100644 --- a/drivers/pci/controller/pcie-mediatek.c +++ b/drivers/pci/controller/pcie-mediatek.c @@ -572,6 +572,7 @@ static int mtk_pcie_init_irq_domain(struct mtk_pcie_port *port, port->irq_domain = irq_domain_add_linear(pcie_intc_node, PCI_NUM_INTX, &intx_domain_ops, port); + of_node_put(pcie_intc_node); if (!port->irq_domain) { dev_err(dev, "failed to get INTx IRQ domain\n"); return -ENODEV; From patchwork Wed Feb 27 04:40:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Yang X-Patchwork-Id: 10831075 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D83EC18B7 for ; Wed, 27 Feb 2019 04:41:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C77812D316 for ; Wed, 27 Feb 2019 04:41:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B83222D31F; Wed, 27 Feb 2019 04:41:21 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4EBD82D330 for ; Wed, 27 Feb 2019 04:41:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729829AbfB0ElJ (ORCPT ); Tue, 26 Feb 2019 23:41:09 -0500 Received: from out1.zte.com.cn ([202.103.147.172]:33882 "EHLO mxct.zte.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729674AbfB0ElI (ORCPT ); Tue, 26 Feb 2019 23:41:08 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id 8E9CD2854E3034C164C2; Wed, 27 Feb 2019 12:41:05 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x1R4etdZ003794; Wed, 27 Feb 2019 12:40:55 +0800 (GMT-8) (envelope-from wen.yang99@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019022712411629-2029149 ; Wed, 27 Feb 2019 12:41:16 +0800 From: Wen Yang To: benh@kernel.crashing.org Cc: paulus@samba.org, mpe@ellerman.id.au, tyreld@linux.vnet.ibm.com, bhelgaas@google.com, linuxppc-dev@lists.ozlabs.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ryder.lee@mediatek.com, lorenzo.pieralisi@arm.com, matthias.bgg@gmail.com, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, rjui@broadcom.com, sbranden@broadcom.com, bcm-kernel-feedback-list@broadcom.com, thomas.petazzoni@bootlin.com, shawn.lin@rock-chips.com, heiko@sntech.de, linux-rockchip@lists.infradead.org, minghuan.Lian@nxp.com, mingkai.hu@nxp.com, roy.zang@nxp.com, hayashi.kunihiko@socionext.com, yamada.masahiro@socionext.com, kishon@ti.com, linux-omap@vger.kernel.org, wang.yi59@zte.com.cn, Wen Yang Subject: [PATCH 8/8] PCI: rpadlpar: fix a leaked reference by adding missing of_node_put Date: Wed, 27 Feb 2019 12:40:43 +0800 Message-Id: <1551242443-27300-8-git-send-email-wen.yang99@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> References: <1551242443-27300-1-git-send-email-wen.yang99@zte.com.cn> X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-02-27 12:41:16, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-02-27 12:40:48, Serialize complete at 2019-02-27 12:40:48 X-MAIL: mse01.zte.com.cn x1R4etdZ003794 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The call to of_find_node_by_name returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./drivers/pci/hotplug/rpadlpar_core.c:55:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 42, but without a corresponding object release within this function Signed-off-by: Wen Yang Cc: Tyrel Datwyler Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Bjorn Helgaas Cc: linux-pci@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/hotplug/rpadlpar_core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c index e2356a9..f3f42ff 100644 --- a/drivers/pci/hotplug/rpadlpar_core.c +++ b/drivers/pci/hotplug/rpadlpar_core.c @@ -52,6 +52,7 @@ static struct device_node *find_vio_slot_node(char *drc_name) break; } + of_node_put(parent); return dn; }