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GET /api/1.2/patches/2222341/?format=api
{ "id": 2222341, "url": "http://patchwork.ozlabs.org/api/1.2/patches/2222341/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260411080148.471335-17-kwilczynski@kernel.org/", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/1.2/projects/28/?format=api", "name": "Linux PCI development", "link_name": "linux-pci", "list_id": "linux-pci.vger.kernel.org", "list_email": "linux-pci@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260411080148.471335-17-kwilczynski@kernel.org>", "list_archive_url": null, "date": "2026-04-11T08:01:40", "name": "[v4,16/24] alpha/PCI: Remove WARN from __pci_mmap_fits()", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "6955ab90c594ec0037a2a98a3aa2647bac325064", "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/linux-pci/patch/20260411080148.471335-17-kwilczynski@kernel.org/mbox/", "series": [ { "id": 499539, "url": "http://patchwork.ozlabs.org/api/1.2/series/499539/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=499539", "date": "2026-04-11T08:01:24", "name": "PCI: Convert all dynamic sysfs attributes to static", "version": 4, "mbox": "http://patchwork.ozlabs.org/series/499539/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2222341/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2222341/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-pci+bounces-52384-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-pci@vger.kernel.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=Kb0avEzV;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116;\n\tt=1775894569; cv=none;\n b=P7kJTIxhcYv5R3XckeE+vnW4tR1ka/jBBfyT5eArGpBl/AaYGr13OCDVDMIIahgQERQgx7ff1ICj8+RiHr6NchFehVEq/a0EhFW8dCzKlAvfR8jvVSUUica0JGjTMmGxVeAUA1ML37CQeRGiEWU5EjNrPTwEm/t1z8ewpC6PKX4=", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=subspace.kernel.org;\n\ts=arc-20240116; t=1775894569; c=relaxed/simple;\n\tbh=Gr3+4m6Cj77hdjiMr0OAiQ4tavCjVjkmMUYZBycpZFE=;\n\th=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References:\n\t MIME-Version:Content-Type;\n b=DjbmxBQZytI0JSGB5LTFrbF0C2/cs0D6QR/BJtZi/mj5Nb9KcmK62o5zichbyVN0H2g+zp4kGVNPGTLNIYroZAmCuGyBR+YFX4zQtQ7pPIJZR0Qxy7QLs6hCYp1kEPRmcaQCTILQqWh5xpIDwGG1lP0kiqoVrMDagtSVZnlrPX8=", "ARC-Authentication-Results": "i=1; smtp.subspace.kernel.org;\n dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org\n header.b=Kb0avEzV; arc=none smtp.client-ip=10.30.226.201", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org;\n\ts=k20201202; t=1775894569;\n\tbh=Gr3+4m6Cj77hdjiMr0OAiQ4tavCjVjkmMUYZBycpZFE=;\n\th=From:To:Cc:Subject:Date:In-Reply-To:References:From;\n\tb=Kb0avEzV9ox7btRhxNy1G7gzEzelfJWiEJ9F56x+rcuE1cqzexUGOjxzBJ4YOVg2c\n\t MpDB1ywE6aBdC0PvGpkhA6lNsLEfytObgJMyBVp/afL7mzo3c60vayh8ClyRk2s95U\n\t 1uLu6aTssGggNBfzh/R5v6ljup5C+RagRnX7oYN+ImDGdO1n3qQKdzoB4TKzUfgDIc\n\t 63u5K8Gy70/B8mdWiVdlwr9VUG3dcDm83owr0uX6Otkv403mb40rVZW2g88Dk78931\n\t 9CKg9RTGXi9aLO22p1Ghzyooa6dXg6T1Dblff+34t7FWTOSLi3fUcPnolIL2DuNhbq\n\t +Vm5oTkT1rehQ==", "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 Magnus Lindholm <linmag7@gmail.com>, 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 v4 16/24] alpha/PCI: Remove WARN from __pci_mmap_fits()", "Date": "Sat, 11 Apr 2026 08:01:40 +0000", "Message-ID": "<20260411080148.471335-17-kwilczynski@kernel.org>", "X-Mailer": "git-send-email 2.53.0", "In-Reply-To": "<20260411080148.471335-1-kwilczynski@kernel.org>", "References": "<20260411080148.471335-1-kwilczynski@kernel.org>", "Precedence": "bulk", "X-Mailing-List": "linux-pci@vger.kernel.org", "List-Id": "<linux-pci.vger.kernel.org>", "List-Subscribe": "<mailto:linux-pci+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-pci+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit" }, "content": "Remove the WARN() that fires when userspace attempts to mmap beyond\nthe BAR bounds. The check still returns 0 to reject the mapping,\nbut the warning is excessive for normal operation.\n\nA similar warning was removed from the PCI core in the commit\n3b519e4ea618 (\"PCI: fix size checks for mmap() on /proc/bus/pci files\").\n\nSigned-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>\n---\n arch/alpha/kernel/pci-sysfs.c | 8 +-------\n 1 file changed, 1 insertion(+), 7 deletions(-)", "diff": "diff --git a/arch/alpha/kernel/pci-sysfs.c b/arch/alpha/kernel/pci-sysfs.c\nindex 2748000a7486..c136603ddf2c 100644\n--- a/arch/alpha/kernel/pci-sysfs.c\n+++ b/arch/alpha/kernel/pci-sysfs.c\n@@ -48,13 +48,7 @@ static int __pci_mmap_fits(struct pci_dev *pdev, int num,\n \tstart = vma->vm_pgoff;\n \tsize = ((len - 1) >> (PAGE_SHIFT - shift)) + 1;\n \n-\tif (start < size && size - start >= nr)\n-\t\treturn 1;\n-\tWARN(1, \"process \\\"%s\\\" tried to map%s 0x%08lx-0x%08lx on %s BAR %d \"\n-\t\t\"(size 0x%08lx)\\n\",\n-\t\tcurrent->comm, sparse ? \" sparse\" : \"\", start, start + nr,\n-\t\tpci_name(pdev), num, size);\n-\treturn 0;\n+\treturn start < size && size - start >= nr;\n }\n \n /**\n", "prefixes": [ "v4", "16/24" ] }