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Date: Thu, 29 Jan 2026 15:01:50 +0000
From: Tzung-Bi Shih <tzungbi@kernel.org>
To: Johan Hovold <johan@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	Danilo Krummrich <dakr@kernel.org>,
	Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>,
	Linus Walleij <linusw@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
	Shuah Khan <shuah@kernel.org>,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
	Wolfram Sang <wsa+renesas@sang-engineering.com>,
	Simona Vetter <simona.vetter@ffwll.ch>,
	Dan Williams <dan.j.williams@intel.com>,
	Jason Gunthorpe <jgg@nvidia.com>, linux-doc@vger.kernel.org,
	linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/3] Revert "revocable: Revocable resource management"
Message-ID: <aXt2XqRnBjb25f81@google.com>
References: <20260124170535.11756-1-johan@kernel.org>
 <aXjgeNY-jf9rIw09@google.com>
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In-Reply-To: <aXjgeNY-jf9rIw09@google.com>

On Tue, Jan 27, 2026 at 03:57:44PM +0000, Tzung-Bi Shih wrote:
> On Sat, Jan 24, 2026 at 06:05:32PM +0100, Johan Hovold wrote:
> > Turns out there are correctness issues with both the gpiolib conversion and
> > the revocable design itself that can lead to use-after-free and hung tasks (see
> > [1] and patch 3/3).
> [...]
> > Revert the revocable implementation until a redesign has been proposed and
> > evaluated properly.
> 
> I'll work on addressing the discovered issues and send follow-up fixes.  I
> believe keeping the current series in linux-next would be beneficial, as it
> allows for easier testing and wider evaluation by others, rather than
> reverting at this stage.

FWIW: https://lore.kernel.org/all/20260129143733.45618-2-tzungbi@kernel.org/
and https://lore.kernel.org/all/20260129143733.45618-4-tzungbi@kernel.org/
are the proposed fixes.