From: "Krzysztof Wilczyński" <kwilczynski@kernel.org>
To: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
Cc: "Bjorn Helgaas" <bhelgaas@google.com>,
"Bjorn Helgaas" <helgaas@kernel.org>,
"Manivannan Sadhasivam" <mani@kernel.org>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Magnus Lindholm" <linmag7@gmail.com>,
"Matt Turner" <mattst88@gmail.com>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Christophe Leroy" <chleroy@kernel.org>,
"Madhavan Srinivasan" <maddy@linux.ibm.com>,
"Michael Ellerman" <mpe@ellerman.id.au>,
"Nicholas Piggin" <npiggin@gmail.com>,
"Dexuan Cui" <decui@microsoft.com>,
"Krzysztof Hałasa" <khalasa@piap.pl>,
"Lukas Wunner" <lukas@wunner.de>,
"Oliver O'Halloran" <oohall@gmail.com>,
"Saurabh Singh Sengar" <ssengar@microsoft.com>,
"Shuan He" <heshuan@bytedance.com>,
"Srivatsa Bhat" <srivatsabhat@microsoft.com>,
linux-pci@vger.kernel.org, linux-alpha@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 10/20] alpha/PCI: Add security_locked_down() check to pci_mmap_resource()
Date: Fri, 10 Apr 2026 20:10:03 +0900 [thread overview]
Message-ID: <20260410111003.GA1750802@rocinante> (raw)
In-Reply-To: <93f81aa9-ce74-92bb-5227-d2ccb0a3e06c@linux.intel.com>
Hello,
> > Currently, Alpha's pci_mmap_resource() does not check
> > security_locked_down(LOCKDOWN_PCI_ACCESS) before allowing
> > userspace to mmap PCI BARs.
> >
> > The generic version has had this check since commit eb627e17727e
> > ("PCI: Lock down BAR access when the kernel is locked down") to
> > prevent DMA attacks when the kernel is locked down.
> >
> > Add the same check to Alpha's pci_mmap_resource().
> >
> > Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
>
> Maybe add Fixes: eb627e17727e ...
Good call, will do!
Thank you!
Krzysztof
next prev parent reply other threads:[~2026-04-10 11:10 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-10 5:50 [PATCH 00/20] PCI: Convert all dynamic sysfs attributes to static Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 01/20] PCI/sysfs: Use PCI resource accessor macros Krzysztof Wilczyński
2026-04-10 10:20 ` Ilpo Järvinen
2026-04-10 5:50 ` [PATCH 02/20] PCI/sysfs: Only allow supported resource types in I/O and MMIO helpers Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 03/20] PCI/sysfs: Use BAR length in pci_llseek_resource() when attr->size is zero Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 04/20] PCI/sysfs: Add CAP_SYS_ADMIN check to __resource_resize_store() Krzysztof Wilczyński
2026-04-10 10:18 ` Ilpo Järvinen
2026-04-10 5:50 ` [PATCH 05/20] PCI/sysfs: Add static PCI resource attribute macros Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 06/20] PCI/sysfs: Convert PCI resource files to static attributes Krzysztof Wilczyński
2026-04-10 10:49 ` Ilpo Järvinen
2026-04-10 11:13 ` Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 07/20] PCI/sysfs: Convert __resource_resize_store() to use " Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 08/20] PCI/sysfs: Add stubs for pci_{create,remove}_sysfs_dev_files() Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 09/20] PCI/sysfs: Limit pci_sysfs_init() late_initcall compile scope Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 10/20] alpha/PCI: Add security_locked_down() check to pci_mmap_resource() Krzysztof Wilczyński
2026-04-10 11:04 ` Ilpo Järvinen
2026-04-10 11:10 ` Krzysztof Wilczyński [this message]
2026-04-10 5:50 ` [PATCH 11/20] alpha/PCI: Use BAR index in sysfs attr->private instead of resource pointer Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 12/20] alpha/PCI: Use PCI resource accessor macros Krzysztof Wilczyński
2026-04-10 11:11 ` Ilpo Järvinen
2026-04-10 11:27 ` Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 13/20] alpha/PCI: Clean up __pci_mmap_fits() Krzysztof Wilczyński
2026-04-10 11:14 ` Ilpo Järvinen
2026-04-10 11:21 ` Krzysztof Wilczyński
2026-04-10 11:32 ` Ilpo Järvinen
2026-04-10 11:55 ` Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 14/20] alpha/PCI: Add static PCI resource attribute macros Krzysztof Wilczyński
2026-04-10 11:19 ` Ilpo Järvinen
2026-04-10 11:48 ` Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 15/20] alpha/PCI: Convert resource files to static attributes Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 16/20] PCI/sysfs: Remove pci_{create,remove}_sysfs_dev_files() Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 17/20] alpha/PCI: Compute legacy size in pci_mmap_legacy_page_range() Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 18/20] PCI/sysfs: Add __weak pci_legacy_has_sparse() helper Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 19/20] PCI/sysfs: Convert legacy I/O and memory attributes to static definitions Krzysztof Wilczyński
2026-04-10 11:47 ` Ilpo Järvinen
2026-04-10 12:04 ` Krzysztof Wilczyński
2026-04-10 5:50 ` [PATCH 20/20] PCI/sysfs: Remove pci_create_legacy_files() and pci_sysfs_init() Krzysztof Wilczyński
2026-04-10 18:18 ` [PATCH 00/20] PCI: Convert all dynamic sysfs attributes to static Krzysztof Wilczyński
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