From: Nicolin Chen <nicolinc@nvidia.com>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Linux ACPI <linux-acpi@vger.kernel.org>, <iommu@lists.linux.dev>,
<linux-arm-kernel@lists.infradead.org>,
LKML <linux-kernel@vger.kernel.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Sudeep Holla <sudeep.holla@kernel.org>,
Ard Biesheuvel <ardb@kernel.org>,
Ilias Apalodimas <ilias.apalodimas@linaro.org>,
<linux-efi@vger.kernel.org>, Will Deacon <will@kernel.org>,
"Joerg Roedel (AMD)" <joro@8bytes.org>,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
Robin Murphy <robin.murphy@arm.com>,
David Rhodes <david.rhodes@cirrus.com>,
"Richard Fitzgerald" <rf@opensource.cirrus.com>,
<linux-sound@vger.kernel.org>, <patches@opensource.cirrus.com>,
Shenghao Ding <shenghao-ding@ti.com>,
"Kevin Lu" <kevin-lu@ti.com>, Baojun Xu <baojun.xu@ti.com>,
Sen Wang <sen@ti.com>
Subject: Re: [PATCH v2 2/5] iommu/arm-smmu-v3: Switch to use acpi_bus_get_primary_device()
Date: Wed, 30 Sep 2026 14:53:59 -0700 [thread overview]
Message-ID: <ar2E99SG6nJK/Csk@nvidia.com> (raw)
In-Reply-To: <3636226.QJadu78ljV@rafael.j.wysocki>
On Wed, Sep 30, 2026 at 08:43:03PM +0200, Rafael J. Wysocki wrote:
> From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
>
> Replace acpi_get_first_physical_node() that is slated for removal
> with acpi_bus_get_primary_device() that takes a reference to the
> device it is about to return.
>
> This addresses a potential use-after-free that may occur if the
> device returned by acpi_get_first_physical_node() is removed right
> after dropping its ACPI companion's physical_node_lock in that
> function.
>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
next prev parent reply other threads:[~2026-09-30 21:54 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-30 18:30 [PATCH v2 0/5] ACPI: Replace acpi_get_first_physical_node() with acpi_bus_get_primary_device() Rafael J. Wysocki
2026-09-30 18:41 ` [PATCH v2 1/5] efi/dev-path-parser: Switch to use acpi_bus_get_primary_device() Rafael J. Wysocki
2026-09-30 18:42 ` [PATCH v2 3/5] ALSA: hda: cs35l41: " Rafael J. Wysocki
2026-10-01 6:21 ` Takashi Iwai
2026-09-30 18:42 ` [PATCH v2 4/5] ALSA: hda: tas2781: " Rafael J. Wysocki
2026-10-01 6:21 ` Takashi Iwai
2026-09-30 18:43 ` [PATCH v2 2/5] iommu/arm-smmu-v3: " Rafael J. Wysocki
2026-09-30 21:53 ` Nicolin Chen [this message]
2026-09-30 18:45 ` [PATCH v2 5/5] ACPI: bus: Drop acpi_get_first_physical_node() Rafael J. Wysocki
2026-10-01 18:22 ` [PATCH v2 0/5] ACPI: Replace acpi_get_first_physical_node() with acpi_bus_get_primary_device() Andy Shevchenko
2026-10-01 18:31 ` Rafael J. Wysocki (Intel)
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