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GET /api/patches/807976/?format=api
{ "id": 807976, "url": "http://patchwork.ozlabs.org/api/patches/807976/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netdev/patch/20170830231953.GA14744@felix-thinkpad.cavium.com/", "project": { "id": 7, "url": "http://patchwork.ozlabs.org/api/projects/7/?format=api", "name": "Linux network development", "link_name": "netdev", "list_id": "netdev.vger.kernel.org", "list_email": "netdev@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170830231953.GA14744@felix-thinkpad.cavium.com>", "list_archive_url": null, "date": "2017-08-30T23:19:53", "name": "[net-next] liquidio: fix crash in presence of zeroed-out base address regs", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": true, "hash": "112046e42dce37f575766b0e05fdd8a48f6931ed", "submitter": { "id": 70599, "url": "http://patchwork.ozlabs.org/api/people/70599/?format=api", "name": "Manlunas, Felix", "email": "felix.manlunas@cavium.com" }, "delegate": { "id": 34, "url": "http://patchwork.ozlabs.org/api/users/34/?format=api", "username": "davem", "first_name": "David", "last_name": "Miller", "email": "davem@davemloft.net" }, "mbox": "http://patchwork.ozlabs.org/project/netdev/patch/20170830231953.GA14744@felix-thinkpad.cavium.com/mbox/", "series": [ { "id": 724, "url": "http://patchwork.ozlabs.org/api/series/724/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netdev/list/?series=724", "date": "2017-08-30T23:19:53", "name": "[net-next] liquidio: fix crash in presence of zeroed-out base address regs", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/724/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/807976/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/807976/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<netdev-owner@vger.kernel.org>", "X-Original-To": "patchwork-incoming@ozlabs.org", "Delivered-To": "patchwork-incoming@ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=netdev-owner@vger.kernel.org;\n\treceiver=<UNKNOWN>)", "ozlabs.org; dkim=pass (1024-bit key;\n\tunprotected) header.d=CAVIUMNETWORKS.onmicrosoft.com\n\theader.i=@CAVIUMNETWORKS.onmicrosoft.com header.b=\"gtW5S4q+\"; \n\tdkim-atps=neutral", "spf=none (sender IP is )\n\tsmtp.mailfrom=Felix.Manlunas@cavium.com; " ], "Received": [ "from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xjLzh17W6z9s7F\n\tfor <patchwork-incoming@ozlabs.org>;\n\tThu, 31 Aug 2017 09:18:56 +1000 (AEST)", "(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1751110AbdH3XSx (ORCPT <rfc822;patchwork-incoming@ozlabs.org>);\n\tWed, 30 Aug 2017 19:18:53 -0400", "from mail-sn1nam01on0077.outbound.protection.outlook.com\n\t([104.47.32.77]:59328\n\t\"EHLO NAM01-SN1-obe.outbound.protection.outlook.com\"\n\trhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP\n\tid S1751155AbdH3XSw (ORCPT <rfc822;netdev@vger.kernel.org>);\n\tWed, 30 Aug 2017 19:18:52 -0400", "from localhost (50.233.148.156) by\n\tBN6PR07MB3171.namprd07.prod.outlook.com (10.172.105.141) with\n\tMicrosoft SMTP Server (version=TLS1_2,\n\tcipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id\n\t15.20.13.10; Wed, 30 Aug 2017 23:18:49 +0000" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=CAVIUMNETWORKS.onmicrosoft.com; s=selector1-cavium-com;\n\th=From:Date:Subject:Message-ID:Content-Type:MIME-Version;\n\tbh=bE1IAZbYo4r+tStQFMcKTjFcKmzB1USHpiQjOQCPbXE=;\n\tb=gtW5S4q+x5rjXvnK5vxGwbYeE0Da15u3ConvuT/O5Fgrn9kcDL/jmNSATsK1Q01sGiu9Jqa1R+fa91oi6sp93cnM1m26DJE7D5PT88vrSQ5g8EzhDlVwY7C3HhT/1GK5oDy+7XmAe6QjFMNOLTGDjsRuf45I7SCVZkMtflPms6s=", "Date": "Wed, 30 Aug 2017 16:19:53 -0700", "From": "Felix Manlunas <felix.manlunas@cavium.com>", "To": "davem@davemloft.net", "Cc": "netdev@vger.kernel.org, raghu.vatsavayi@cavium.com,\n\tderek.chickles@cavium.com, satananda.burla@cavium.com,\n\tricardo.farrington@cavium.com", "Subject": "[PATCH net-next] liquidio: fix crash in presence of zeroed-out base\n\taddress regs", "Message-ID": "<20170830231953.GA14744@felix-thinkpad.cavium.com>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=us-ascii", "Content-Disposition": "inline", "User-Agent": "Mutt/1.6.1 (2016-04-27)", "X-Originating-IP": "[50.233.148.156]", "X-ClientProxiedBy": "MWHPR22CA0048.namprd22.prod.outlook.com (10.168.250.162)\n\tTo\n\tBN6PR07MB3171.namprd07.prod.outlook.com (10.172.105.141)", "X-MS-PublicTrafficType": "Email", "X-MS-Office365-Filtering-Correlation-Id": "a7159233-440f-429d-a0f6-08d4effd78e4", "X-Microsoft-Antispam": "UriScan:; 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SFP:1101; SCL:1; SRVR:BN6PR07MB3171; H:localhost;\n\tFPR:; SPF:None; PTR:InfoNoRecords; A:1; MX:1; LANG:en; ", "Received-SPF": "None (protection.outlook.com: cavium.com does not designate\n\tpermitted sender hosts)", "SpamDiagnosticOutput": "1:99", "SpamDiagnosticMetadata": "NSPM", "X-OriginatorOrg": "cavium.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "30 Aug 2017 23:18:49.8024\n\t(UTC)", "X-MS-Exchange-CrossTenant-FromEntityHeader": "Hosted", "X-MS-Exchange-CrossTenant-Id": "711e4ccf-2e9b-4bcf-a551-4094005b6194", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "BN6PR07MB3171", "Sender": "netdev-owner@vger.kernel.org", "Precedence": "bulk", "List-ID": "<netdev.vger.kernel.org>", "X-Mailing-List": "netdev@vger.kernel.org" }, "content": "From: Rick Farrington <ricardo.farrington@cavium.com>\n\nFix crash in linux PF driver when BARs have been cleared/de-programmed;\nfail early init (prior to mapping BARs) if the BAR0 or\nBAR1 registers are zero.\n\nThis situation can arise when the PF is added to a VM (PCI pass-through),\nthen a PF FLR is issued (in the VM). After this occurs, the BAR registers\nwill be zero. If we attempt to load the PF driver in the host\n(after VM has been shutdown), the host can reset.\n\nSigned-off-by: Rick Farrington <ricardo.farrington@cavium.com>\nSigned-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com>\nSigned-off-by: Felix Manlunas <felix.manlunas@cavium.com>\n---\n .../net/ethernet/cavium/liquidio/cn23xx_pf_device.c | 20 ++++++++++++++++++++\n 1 file changed, 20 insertions(+)", "diff": "diff --git a/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c b/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c\nindex 4b0ca9f..8705e23 100644\n--- a/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c\n+++ b/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c\n@@ -1269,6 +1269,26 @@ static int cn23xx_sriov_config(struct octeon_device *oct)\n \n int setup_cn23xx_octeon_pf_device(struct octeon_device *oct)\n {\n+\tu32 data32;\n+\tu64 BAR0, BAR1;\n+\n+\tpci_read_config_dword(oct->pci_dev, PCI_BASE_ADDRESS_0, &data32);\n+\tBAR0 = (u64)(data32 & ~0xf);\n+\tpci_read_config_dword(oct->pci_dev, PCI_BASE_ADDRESS_1, &data32);\n+\tBAR0 |= ((u64)data32 << 32);\n+\tpci_read_config_dword(oct->pci_dev, PCI_BASE_ADDRESS_2, &data32);\n+\tBAR1 = (u64)(data32 & ~0xf);\n+\tpci_read_config_dword(oct->pci_dev, PCI_BASE_ADDRESS_3, &data32);\n+\tBAR1 |= ((u64)data32 << 32);\n+\n+\tif (!BAR0 || !BAR1) {\n+\t\tif (!BAR0)\n+\t\t\tdev_err(&oct->pci_dev->dev, \"device BAR0 unassigned\\n\");\n+\t\tif (!BAR1)\n+\t\t\tdev_err(&oct->pci_dev->dev, \"device BAR1 unassigned\\n\");\n+\t\treturn 1;\n+\t}\n+\n \tif (octeon_map_pci_barx(oct, 0, 0))\n \t\treturn 1;\n \n", "prefixes": [ "net-next" ] }