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GET /api/1.2/patches/2234795/?format=api
{ "id": 2234795, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2234795/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260508043543.217179-6-kwilczynski@kernel.org/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/1.2/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<20260508043543.217179-6-kwilczynski@kernel.org>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/20260508043543.217179-6-kwilczynski@kernel.org/", "date": "2026-05-08T04:35:24", "name": "[v7,05/24] PCI/sysfs: Add CAP_SYS_ADMIN check to __resource_resize_store()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "c49e0a73cbc2101568fc3de0ec56b181777ddad3", "submitter": { "id": 86709, "url": "http://patchwork.ozlabs.org/api/1.2/people/86709/?format=api", "name": "Krzysztof Wilczyński", "email": "kwilczynski@kernel.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260508043543.217179-6-kwilczynski@kernel.org/mbox/", "series": [ { "id": 503322, "url": "http://patchwork.ozlabs.org/api/1.2/series/503322/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=503322", "date": "2026-05-08T04:35:20", "name": "PCI: Convert all dynamic sysfs attributes to static", "version": 7, "mbox": "http://patchwork.ozlabs.org/series/503322/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2234795/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2234795/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-20589-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256\n header.s=k20201202 header.b=c6YrOJEL;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; 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Fri, 08 May 2026 14:36:33 +1000 (AEST)", "from boromir.ozlabs.org (localhost [127.0.0.1])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 4gBbsj5KlRz2yjx;\n\tFri, 08 May 2026 14:36:09 +1000 (AEST)", "from sea.source.kernel.org (sea.source.kernel.org\n [IPv6:2600:3c0a:e001:78e:0:1991:8:25])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519)\n\t(No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 4gBbsj0TC7z2xPb\n\tfor <linuxppc-dev@lists.ozlabs.org>; Fri, 08 May 2026 14:36:09 +1000 (AEST)", "from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58])\n\tby sea.source.kernel.org (Postfix) with ESMTP id 1FAC643C68;\n\tFri, 8 May 2026 04:36:07 +0000 (UTC)", "by smtp.kernel.org (Postfix) with ESMTPSA id B03F2C2BCB4;\n\tFri, 8 May 2026 04:36:03 +0000 (UTC)" ], "ARC-Seal": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1778214969;\n\tcv=none;\n b=X7DAFUry5k/f9Lc4R7I2wYknxExfmVT6werD7qGbPD3bHzO6UjiaOmGACLji2EEUd4Lq4kUXCqUOYFreTCzd/9/Ik0zORk7FvqTp3M+Za6qYDs8ZFtJevVGsIMrQ6ckynwUvLCmrP7ce8OLsX7n7la9K9r3mEKY2U3D2utXsA0//M8qvjaZOZurMOiCchH4CcS/EqTzWXA2ktmEz6cQKl4D9bVopV5aGaCaB82/cbC/HbEt4bF1Cic+u7Fg3b/ChOMviPkOcf2xMbEUpEyJrDyjtwA+vV2R+oLwXqo1BfUXEvv6Cc4UlKEW7zkR4HciNooplQPA2AuLpreUf8b//rw==", "ARC-Message-Signature": "i=1; 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a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1778214967;\n\tbh=9KXLrBNGT0ToNu4fHZqX/w3XLpky3ur23Tmkqe8TgNA=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=c6YrOJELe42YPhzYmdxA2+pDGLb/lIIe88nH1uFnMhkVo6O/4Hmt77NyiEHQiaOz/\n\t 3lW3I9GpoGve5tNp1zxXkM7MW2Kuxd1dHEpoDZ41L0vuQk1iqISSLe3A8us/fJtd7d\n\t o0Bx1t5t02a6uc6MTVhdP7hlvzstCojKjCNiMYJD2QuET9VC2eHdq7NswApXbkusrk\n\t Kr1zOzU+p7Y+pLwWxcrDqxahePyzuZJ59CaQPJXVyW3sDqGFLaCRDaEPUB3/qJ1svY\n\t rGbmmWFcH7osNf2BlaJa+N0ZAj3Rh7vG5kKKDreZfWwhWdE8mx5dlKTDGf2ScSJIN+\n\t Ur8pxP9rFDk4A==", "From": "=?utf-8?q?Krzysztof_Wilczy=C5=84ski?= <kwilczynski@kernel.org>", "To": "Bjorn Helgaas <bhelgaas@google.com>", "Cc": "Bjorn Helgaas <helgaas@kernel.org>,\n Manivannan Sadhasivam <mani@kernel.org>,\n Lorenzo Pieralisi <lpieralisi@kernel.org>,\n Alex Williamson <alex@shazbot.org>, Magnus Lindholm <linmag7@gmail.com>,\n Matt Turner <mattst88@gmail.com>,\n Richard Henderson <richard.henderson@linaro.org>,\n Christophe Leroy <chleroy@kernel.org>,\n Madhavan Srinivasan <maddy@linux.ibm.com>,\n Michael Ellerman <mpe@ellerman.id.au>, Nicholas Piggin <npiggin@gmail.com>,\n Dexuan Cui <decui@microsoft.com>,\n =?utf-8?q?Krzysztof_Ha=C5=82asa?= <khalasa@piap.pl>,\n Lukas Wunner <lukas@wunner.de>, \"Oliver O'Halloran\" <oohall@gmail.com>,\n Saurabh Singh Sengar <ssengar@microsoft.com>,\n Shuan He <heshuan@bytedance.com>, Srivatsa Bhat <srivatsabhat@microsoft.com>,\n\t=?utf-8?q?Ilpo_J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com>,\n linux-pci@vger.kernel.org, linux-alpha@vger.kernel.org,\n linuxppc-dev@lists.ozlabs.org", "Subject": "[PATCH v7 05/24] PCI/sysfs: Add CAP_SYS_ADMIN check to\n __resource_resize_store()", "Date": "Fri, 8 May 2026 04:35:24 +0000", "Message-ID": "<20260508043543.217179-6-kwilczynski@kernel.org>", "X-Mailer": "git-send-email 2.54.0", "In-Reply-To": "<20260508043543.217179-1-kwilczynski@kernel.org>", "References": "<20260508043543.217179-1-kwilczynski@kernel.org>", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit", "X-Spam-Status": "No, score=-0.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED,\n\tDKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS\n\tautolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "Currently, the __resource_resize_store() allows writing to the\nresourceN_resize sysfs attribute to change a BAR's size without\nchecking for capabilities, currently relying only on the file\naccess check.\n\nResizing a BAR modifies PCI device configuration and can disrupt\nactive drivers. After the upcoming conversion to static attributes,\nit will also trigger resource file updates via sysfs_update_groups().\n\nThus, add a CAP_SYS_ADMIN check to prevent unprivileged users from\nperforming BAR resize operations.\n\nTested-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>\nReviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>\nSigned-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>\n---\n drivers/pci/pci-sysfs.c | 3 +++\n 1 file changed, 3 insertions(+)", "diff": "diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c\nindex 2280b7edb41f..dac780597727 100644\n--- a/drivers/pci/pci-sysfs.c\n+++ b/drivers/pci/pci-sysfs.c\n@@ -1596,6 +1596,9 @@ static ssize_t __resource_resize_store(struct device *dev, int n,\n \tint ret;\n \tu16 cmd;\n \n+\tif (!capable(CAP_SYS_ADMIN))\n+\t\treturn -EPERM;\n+\n \tif (kstrtoul(buf, 0, &size) < 0)\n \t\treturn -EINVAL;\n \n", "prefixes": [ "v7", "05/24" ] }