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Thu, 28 Sep 2023 11:48:00 -0500 From: Lizhi Hou To: , , , , CC: Lizhi Hou , , Subject: [PATCH v1 1/2] PCI: of: Fix memory leak when of_changeset_create_node() failed Date: Thu, 28 Sep 2023 09:47:10 -0700 Message-ID: <1695919631-7661-1-git-send-email-lizhi.hou@amd.com> X-Mailer: git-send-email 1.8.3.1 MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A108:EE_|MN2PR12MB4126:EE_ X-MS-Office365-Filtering-Correlation-Id: 2c5bf754-4e81-427d-ade8-08dbc042adcf X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230031)(4636009)(136003)(396003)(346002)(39860400002)(376002)(230922051799003)(64100799003)(82310400011)(186009)(451199024)(1800799009)(46966006)(40470700004)(36840700001)(336012)(966005)(478600001)(6666004)(54906003)(426003)(83380400001)(2616005)(26005)(110136005)(70586007)(41300700001)(8936002)(44832011)(316002)(4326008)(2906002)(8676002)(5660300002)(70206006)(36860700001)(36756003)(86362001)(47076005)(81166007)(82740400003)(356005)(40480700001)(40460700003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Sep 2023 16:48:01.9031 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2c5bf754-4e81-427d-ade8-08dbc042adcf X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A108.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4126 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Destroy and free cset when failure happens. Fixes: 407d1a51921e ("PCI: Create device tree node for bridge") Reported-by: Herve Codina Closes: https://lore.kernel.org/all/20230911171319.495bb837@bootlin.com/ Signed-off-by: Lizhi Hou --- drivers/pci/of.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/pci/of.c b/drivers/pci/of.c index 2af64bcb7da3..51e3dd0ea5ab 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -657,30 +657,33 @@ void of_pci_make_dev_node(struct pci_dev *pdev) cset = kmalloc(sizeof(*cset), GFP_KERNEL); if (!cset) - goto failed; + goto out_free_name; of_changeset_init(cset); np = of_changeset_create_node(cset, ppnode, name); if (!np) - goto failed; - np->data = cset; + goto out_destroy_cset; ret = of_pci_add_properties(pdev, cset, np); if (ret) - goto failed; + goto out_free_node; ret = of_changeset_apply(cset); if (ret) - goto failed; + goto out_free_node; + np->data = cset; pdev->dev.of_node = np; kfree(name); return; -failed: - if (np) - of_node_put(np); +out_free_node: + of_node_put(np); +out_destroy_cset: + of_changeset_destroy(cset); + kfree(cset); +out_free_name: kfree(name); } #endif From patchwork Thu Sep 28 16:47:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lizhi Hou X-Patchwork-Id: 13403321 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 271A7E732F3 for ; Thu, 28 Sep 2023 16:48:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231488AbjI1QsH (ORCPT ); Thu, 28 Sep 2023 12:48:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53942 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231332AbjI1QsG (ORCPT ); Thu, 28 Sep 2023 12:48:06 -0400 Received: from NAM04-BN8-obe.outbound.protection.outlook.com (mail-bn8nam04on2045.outbound.protection.outlook.com [40.107.100.45]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3FCFC1AC; 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Thu, 28 Sep 2023 11:48:01 -0500 From: Lizhi Hou To: , , , , CC: Lizhi Hou , , Subject: [PATCH v1 2/2] PCI: of_property: Fix uninitialized variable when of_irq_parse_raw() failed Date: Thu, 28 Sep 2023 09:47:11 -0700 Message-ID: <1695919631-7661-2-git-send-email-lizhi.hou@amd.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1695919631-7661-1-git-send-email-lizhi.hou@amd.com> References: <1695919631-7661-1-git-send-email-lizhi.hou@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A101:EE_|PH7PR12MB8777:EE_ X-MS-Office365-Filtering-Correlation-Id: d13cbf3b-479f-4803-6b80-08dbc042ae57 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230031)(4636009)(136003)(39860400002)(376002)(346002)(396003)(230922051799003)(82310400011)(1800799009)(64100799003)(186009)(451199024)(36840700001)(46966006)(40470700004)(40480700001)(6666004)(81166007)(70586007)(2906002)(356005)(83380400001)(36860700001)(82740400003)(70206006)(110136005)(966005)(26005)(5660300002)(336012)(41300700001)(4326008)(44832011)(47076005)(478600001)(8676002)(54906003)(426003)(8936002)(2616005)(316002)(36756003)(86362001)(40460700003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Sep 2023 16:48:02.7927 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d13cbf3b-479f-4803-6b80-08dbc042ae57 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A101.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB8777 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org In function of_pci_prop_intr_map(), addr_sz[i] will be uninitialized if of_irq_parse_raw() returns failure. Add addr_sz array initialization. And when parsing irq failed, skip generating interrupt-map pair for the pin. Fixes: 407d1a51921e ("PCI: Create device tree node for bridge") Reported-by: Jonathan Cameron Closes: https://lore.kernel.org/all/20230911154856.000076c3@Huawei.com/ Reviewed-by: Herve Codina Signed-off-by: Lizhi Hou --- drivers/pci/of_property.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) diff --git a/drivers/pci/of_property.c b/drivers/pci/of_property.c index 710ec35ba4a1..c2c7334152bc 100644 --- a/drivers/pci/of_property.c +++ b/drivers/pci/of_property.c @@ -186,8 +186,8 @@ static int of_pci_prop_interrupts(struct pci_dev *pdev, static int of_pci_prop_intr_map(struct pci_dev *pdev, struct of_changeset *ocs, struct device_node *np) { + u32 i, addr_sz[OF_PCI_MAX_INT_PIN] = { 0 }, map_sz = 0; struct of_phandle_args out_irq[OF_PCI_MAX_INT_PIN]; - u32 i, addr_sz[OF_PCI_MAX_INT_PIN], map_sz = 0; __be32 laddr[OF_PCI_ADDRESS_CELLS] = { 0 }; u32 int_map_mask[] = { 0xffff00, 0, 0, 7 }; struct device_node *pnode; @@ -213,33 +213,44 @@ static int of_pci_prop_intr_map(struct pci_dev *pdev, struct of_changeset *ocs, out_irq[i].args[0] = pin; ret = of_irq_parse_raw(laddr, &out_irq[i]); if (ret) { - pci_err(pdev, "parse irq %d failed, ret %d", pin, ret); + out_irq[i].np = NULL; + pci_dbg(pdev, "parse irq %d failed, ret %d", pin, ret); continue; } - ret = of_property_read_u32(out_irq[i].np, "#address-cells", - &addr_sz[i]); - if (ret) - addr_sz[i] = 0; + of_property_read_u32(out_irq[i].np, "#address-cells", + &addr_sz[i]); } list_for_each_entry(child, &pdev->subordinate->devices, bus_list) { for (pin = 1; pin <= OF_PCI_MAX_INT_PIN; pin++) { i = pci_swizzle_interrupt_pin(child, pin) - 1; + if (!out_irq[i].np) + continue; map_sz += 5 + addr_sz[i] + out_irq[i].args_count; } } + /* + * Parsing interrupt failed for all pins. In this case, it does not + * need to generate interrupt-map property. + */ + if (!map_sz) + return 0; + int_map = kcalloc(map_sz, sizeof(u32), GFP_KERNEL); mapp = int_map; list_for_each_entry(child, &pdev->subordinate->devices, bus_list) { for (pin = 1; pin <= OF_PCI_MAX_INT_PIN; pin++) { + i = pci_swizzle_interrupt_pin(child, pin) - 1; + if (!out_irq[i].np) + continue; + *mapp = (child->bus->number << 16) | (child->devfn << 8); mapp += OF_PCI_ADDRESS_CELLS; *mapp = pin; mapp++; - i = pci_swizzle_interrupt_pin(child, pin) - 1; *mapp = out_irq[i].np->phandle; mapp++; if (addr_sz[i]) {