From: "Danilo Krummrich" <dakr@kernel.org>
To: "Johan Hovold" <johan@kernel.org>
Cc: "Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Rafael J . Wysocki" <rafael@kernel.org>,
<driver-core@lists.linux.dev>, <linux-kernel@vger.kernel.org>,
<stable@vger.kernel.org>
Subject: Re: [PATCH] driver core: reject devices with unregistered buses
Date: Tue, 28 Apr 2026 21:09:04 +0200 [thread overview]
Message-ID: <DI50WG9XK1I4.1R6DXSZSWFRDC@kernel.org> (raw)
In-Reply-To: <20260427102852.2174-1-johan@kernel.org>
On Mon Apr 27, 2026 at 12:28 PM CEST, Johan Hovold wrote:
> Trying to register a device on a bus which has not yet been registered
> used to trigger a NULL-pointer dereference, but since the const bus
> structure rework registration instead succeeds without the device being
> added to the bus.
>
> Reject devices with unregistered buses to catch any callers that get
> the ordering wrong and to handle bus registration failures more
> gracefully.
>
> Fixes: 5221b82d46f2 ("driver core: bus: bus_add/probe/remove_device() cleanups")
> Cc: stable@vger.kernel.org # 6.3
Hm...this sounds like hardening and not like a "real" bug fix. Do you have a
specific reason why you added Cc: stable?
next prev parent reply other threads:[~2026-04-28 19:09 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-27 10:28 [PATCH] driver core: reject devices with unregistered buses Johan Hovold
2026-04-28 19:09 ` Danilo Krummrich [this message]
2026-04-29 10:11 ` Johan Hovold
2026-04-29 11:11 ` Danilo Krummrich
2026-04-29 11:33 ` Johan Hovold
2026-04-29 14:52 ` Danilo Krummrich
2026-04-29 15:08 ` Johan Hovold
2026-04-29 15:29 ` Danilo Krummrich
2026-04-29 16:00 ` Johan Hovold
2026-04-29 16:18 ` Danilo Krummrich
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