linux-kernel - Re: [PATCH v7 1/3] revocable: Revocable resource management

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <DFQ5W41X6Z7S.3V6FRPXYMDJ1F@kernel.org>
Date: Fri, 16 Jan 2026 17:41:47 +0100
From: "Danilo Krummrich" <dakr@...nel.org>
To: "Laurent Pinchart" <laurent.pinchart@...asonboard.com>
Cc: "Bartosz Golaszewski" <brgl@...nel.org>, "Tzung-Bi Shih"
 <tzungbi@...nel.org>, "Benson Leung" <bleung@...omium.org>, "Greg
 Kroah-Hartman" <gregkh@...uxfoundation.org>, "Rafael J . Wysocki"
 <rafael@...nel.org>, "Linus Walleij" <linusw@...nel.org>, "Jonathan Corbet"
 <corbet@....net>, "Shuah Khan" <shuah@...nel.org>,
 <linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
 <chrome-platform@...ts.linux.dev>, <linux-kselftest@...r.kernel.org>,
 "Wolfram Sang" <wsa+renesas@...g-engineering.com>, "Simona Vetter"
 <simona.vetter@...ll.ch>, "Dan Williams" <dan.j.williams@...el.com>, "Jason
 Gunthorpe" <jgg@...dia.com>, <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH v7 1/3] revocable: Revocable resource management

On Fri Jan 16, 2026 at 5:04 PM CET, Laurent Pinchart wrote:
> Based on the discussions we had at LPC, the revocable resource management API
> is not the right solution to handle races between device removal and userspace
> access.

Please see: https://lore.kernel.org/all/DFQ5D44A0348.PZJIGPL972N@kernel.org/

> It is however a possibly useful tool for races between producers and consumers
> *inside the kernel*.

Do you have an example for such a case?