From: Tzung-Bi Shih <tzungbi@kernel.org>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Bartosz Golaszewski <brgl@bgdev.pl>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>,
Krzysztof Kozlowski <krzk@kernel.org>,
Benson Leung <bleung@chromium.org>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Danilo Krummrich <dakr@kernel.org>,
Jonathan Corbet <corbet@lwn.net>, Shuah Khan <shuah@kernel.org>,
Dawid Niedzwiecki <dawidn@google.com>,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
chrome-platform@lists.linux.dev, linux-kselftest@vger.kernel.org,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
Dan Williams <dan.j.williams@intel.com>
Subject: Re: [PATCH v3 0/5] platform/chrome: Fix a possible UAF via revocable
Date: Tue, 23 Sep 2025 08:20:18 +0000 [thread overview]
Message-ID: <aNJYQs2MVjVujEEu@google.com> (raw)
In-Reply-To: <20250913161413.GD4842@pendragon.ideasonboard.com>
On Sat, Sep 13, 2025 at 07:14:13PM +0300, Laurent Pinchart wrote:
> On Sat, Sep 13, 2025 at 11:55:45PM +0800, Tzung-Bi Shih wrote:
> > - Subsystems (like cdev) should build on this API to provide an easier
> > interface for their drivers to manage revocable resources.
> >
> > I'll create a PoC based on this.
>
> I'm looking forward to that. Please let me know if there's anything you
> would like to discuss. I didn't dive deep in technical details in this
> thread, and I don't expect anyone to guess what I have in mind if I
> failed to express it :-) I'm very confident the cdev race condition can
> be fixed in a neat way, so let's do that.
Even though I think this isn't what you are looking for originally, please
take a look on the PoC attempt (5th - 7th patches) in [1]. Unlike [2], the
PoC allows fops to be exuected and defers to the driver to decide what to do
if the resource is unavailable.
[1] https://lore.kernel.org/chrome-platform/20250923075302.591026-1-tzungbi@kernel.org
[2] https://lore.kernel.org/all/161117153776.2853729.6944617921517514510.stgit@dwillia2-desk3.amr.corp.intel.com/
next prev parent reply other threads:[~2025-09-23 8:20 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-12 8:17 [PATCH v3 0/5] platform/chrome: Fix a possible UAF via revocable Tzung-Bi Shih
2025-09-12 8:17 ` [PATCH v3 1/5] revocable: Revocable resource management Tzung-Bi Shih
2025-09-12 9:05 ` Danilo Krummrich
2025-09-13 15:56 ` Tzung-Bi Shih
2025-09-12 13:27 ` Jonathan Corbet
2025-09-13 15:56 ` Tzung-Bi Shih
2025-09-17 5:24 ` Tzung-Bi Shih
2025-09-22 18:35 ` Simona Vetter
2025-09-12 8:17 ` [PATCH v3 2/5] revocable: Add Kunit test cases Tzung-Bi Shih
2025-09-12 8:17 ` [PATCH v3 3/5] selftests: revocable: Add kselftest cases Tzung-Bi Shih
2025-09-12 8:17 ` [PATCH v3 4/5] platform/chrome: Protect cros_ec_device lifecycle with revocable Tzung-Bi Shih
2025-09-12 8:17 ` [PATCH v3 5/5] platform/chrome: cros_ec_chardev: Consume cros_ec_device via revocable Tzung-Bi Shih
2025-09-12 8:30 ` [PATCH v3 0/5] platform/chrome: Fix a possible UAF " Greg Kroah-Hartman
2025-09-12 8:34 ` Danilo Krummrich
2025-09-12 9:20 ` Laurent Pinchart
2025-09-12 9:09 ` Krzysztof Kozlowski
2025-09-12 9:24 ` Bartosz Golaszewski
2025-09-12 12:49 ` Tzung-Bi Shih
2025-09-12 13:26 ` Laurent Pinchart
2025-09-12 13:39 ` Greg Kroah-Hartman
2025-09-12 13:45 ` Laurent Pinchart
2025-09-12 13:46 ` Bartosz Golaszewski
2025-09-12 13:59 ` Laurent Pinchart
2025-09-12 14:19 ` Greg Kroah-Hartman
2025-09-12 14:26 ` Laurent Pinchart
2025-09-12 14:40 ` Greg Kroah-Hartman
2025-09-12 14:44 ` Bartosz Golaszewski
2025-09-12 14:54 ` Laurent Pinchart
2025-09-12 16:22 ` Danilo Krummrich
2025-09-13 16:17 ` Laurent Pinchart
2025-09-22 22:43 ` dan.j.williams
2025-09-13 15:55 ` Tzung-Bi Shih
2025-09-13 16:14 ` Laurent Pinchart
2025-09-23 8:20 ` Tzung-Bi Shih [this message]
2025-09-12 14:53 ` Laurent Pinchart
2025-09-22 15:10 ` Jason Gunthorpe
2025-09-22 15:55 ` Danilo Krummrich
2025-09-22 17:40 ` Jason Gunthorpe
2025-09-22 18:42 ` Greg Kroah-Hartman
2025-09-22 20:17 ` Jason Gunthorpe
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