From: Takashi Iwai <tiwai@suse.de>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Linux ACPI <linux-acpi@vger.kernel.org>,
linux-sound@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Sudeep Holla <sudeep.holla@kernel.org>,
linux-arm-kernel@lists.infradead.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>,
iommu@lists.linux.dev, David Rhodes <david.rhodes@cirrus.com>,
Richard Fitzgerald <rf@opensource.cirrus.com>,
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 3/5] ALSA: hda: cs35l41: Switch to use acpi_bus_get_primary_device()
Date: Thu, 01 Oct 2026 08:21:35 +0200 [thread overview]
Message-ID: <87zewy2b68.wl-tiwai@suse.de> (raw)
In-Reply-To: <6200303.MhkbZ0Pkbq@rafael.j.wysocki>
On Wed, 30 Sep 2026 20:42:15 +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>
> ---
>
> This patch depends on new material in linux-next.
>
> If you maintain the code updated by it, please consider ACKing it, so I can
> pick it up and remove the problematic API replaced by it during the 7.4
> merge window.
>
> In the absence of feedback, it will be resent again when 7.4-rc1 is out.
>
> Thanks!
Acked-by: Takashi Iwai <tiwai@suse.de>
thanks,
Takashi
next prev parent reply other threads:[~2026-10-01 6:21 UTC|newest]
Thread overview: 9+ 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 [this message]
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
2026-09-30 18:45 ` [PATCH v2 5/5] ACPI: bus: Drop acpi_get_first_physical_node() Rafael J. Wysocki
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