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{ "id": 2219768, "url": "http://patchwork.ozlabs.org/api/covers/2219768/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/cover/20260404-fix_pci_access-v1-0-416f32c6f7ec@oss.qualcomm.com/", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/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": "<20260404-fix_pci_access-v1-0-416f32c6f7ec@oss.qualcomm.com>", "list_archive_url": null, "date": "2026-04-04T08:52:58", "name": "[0/2] PCI: Fix NULL pointer access in pci_store_saved_state()", "submitter": { "id": 89908, "url": "http://patchwork.ozlabs.org/api/people/89908/?format=api", "name": "Krishna Chaitanya Chundru", "email": "krishna.chundru@oss.qualcomm.com" }, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/cover/20260404-fix_pci_access-v1-0-416f32c6f7ec@oss.qualcomm.com/mbox/", "series": [ { "id": 498709, "url": "http://patchwork.ozlabs.org/api/series/498709/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=498709", "date": "2026-04-04T08:52:58", "name": "PCI: Fix NULL pointer access in pci_store_saved_state()", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/498709/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2219768/comments/", "headers": { "Return-Path": "\n <linux-pci+bounces-51868-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=qualcomm.com header.i=@qualcomm.com header.a=rsa-sha256\n header.s=qcppdkim1 header.b=Jjmhkl2U;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com\n header.a=rsa-sha256 header.s=google header.b=ezjESPQo;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "X-B4-Tracking": "v=1; b=H4sIAGrR0GkC/x2MQQqAIBAAvxJ7TjAND30lQnLdai8mLkQg/j3pO\n DAzFYQKk8AyVCj0sPCdOkzjAHjt6STFsTMYbZy22qqDX5+R/Y5IIgq1DTa4OcaA0KNcqBv/cN1\n a+wD7g2LLYAAAAA==", "X-Change-ID": "20260303-fix_pci_access-c03b3b64ddbc", "To": "Bjorn Helgaas <bhelgaas@google.com>,\n manivannan.sadhasivam@oss.qualcomm.com", "Cc": "linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,\n Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>,\n Shawn Anastasio <sanastasio@raptorengineering.com>,\n Timothy Pearson <tpearson@raptorengineering.com>,\n Lukas Wunner <lukas@wunner.de>", "X-Mailer": "b4 0.14.2", "X-Developer-Signature": "v=1; a=ed25519-sha256; t=1775292784; l=1433;\n i=krishna.chundru@oss.qualcomm.com; s=20230907; h=from:subject:message-id;\n bh=akcwv7FwYHslYB8DD2ESdGVUWQ9b/KqvjRHw6aenFWs=;\n b=ASk8IWHZTKdMs+IDgdvapUGBUZTKJC6y7w88GlYDKhchbaaQCoYuktwiabsONwz/pyjMBBPl/\n nwxqvGxurrwC7U+kYJaUsMYPmMLNBV/DG+trnIg3i+xjaD9Xrg5qis2", "X-Developer-Key": "i=krishna.chundru@oss.qualcomm.com; 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The issue is not limited to a specific\ncapability type and may occur at any point during the save process.\n\nOne example is, while saving VC extended capability save path\n(pci_save_vc_state() / pci_vc_do_save_buffer()) then interprets all-1s\ncapability fields as valid and ends up writing far beyond the allocated\npci_cap_saved_state buffer, corrupting the pci_dev->saved_cap_space list.\n\nSigned-off-by: Krishna Chaitanya Chundru <krishna.chundru@oss.qualcomm.com>\n---\nKrishna Chaitanya Chundru (2):\n PCI: Add pcie_link_is_active() to determine if the link is active\n PCI: Fix NULL pointer access in pci_store_saved_state()\n\n drivers/pci/hotplug/pciehp.h | 1 -\n drivers/pci/hotplug/pciehp_ctrl.c | 2 +-\n drivers/pci/hotplug/pciehp_hpc.c | 35 ++++-------------------------------\n drivers/pci/pci.c | 38 +++++++++++++++++++++++++++++++++++---\n drivers/pci/pci.h | 1 +\n 5 files changed, 41 insertions(+), 36 deletions(-)\n---\nbase-commit: 7ca6d1cfec80ebe46cc063f3284c5896c344d9a1\nchange-id: 20260303-fix_pci_access-c03b3b64ddbc\n\nBest regards," }