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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>,
	"Dmitry Torokhov" <dmitry.torokhov@gmail.com>,
	"Alan Stern" <stern@rowland.harvard.edu>,
	"Mario Peter" <mario.peter@leica-geosystems.com>,
	<driver-core@lists.linux.dev>, <linux-usb@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 0/3] driver core: parent lock fixes
Date: Thu, 15 Oct 2026 01:11:47 +0200	[thread overview]
Message-ID: <DM4XWCTH7UBK.3HO753UD4MCRY@kernel.org> (raw)
In-Reply-To: <20261014133109.1392265-1-johan@kernel.org>

On Wed Oct 14, 2026 at 3:31 PM CEST, Johan Hovold wrote:
> Mario Peter reported that USB interfaces may be probed without holding
> the parent USB device lock during asynchronous and deferred probe.
>
> This series addresses both cases, while fixing a long-standing
> use-after-free issue with the parent lock implementation stemming from
> the fact that the driver core does not necessarily hold a reference to
> the parent device when taking its lock.

I've picked those fixes up, as I think it would be good to still land them for
v7.4-rc1. (I might send them as a second PR in the middle of the merge window
though.)

Please let me know in case you have any concerns.

Thanks,
Danilo

  parent reply	other threads:[~2026-10-14 23:11 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-14 13:31 Johan Hovold
2026-10-14 13:31 ` [PATCH v2 1/3] driver core: fix parent lock use-after-free on USB disconnect Johan Hovold
2026-10-14 14:49   ` Danilo Krummrich
2026-10-14 14:58     ` Alan Stern
2026-10-14 13:31 ` [PATCH v2 2/3] driver core: take parent lock on deferred probe Johan Hovold
2026-10-14 13:31 ` [PATCH v2 3/3] driver core: take parent lock in async device attach Johan Hovold
2026-10-14 14:52   ` Alan Stern
2026-10-14 14:58     ` Johan Hovold
2026-10-14 23:11 ` Danilo Krummrich [this message]
2026-10-14 23:12 ` [PATCH v2 0/3] driver core: parent lock fixes Danilo Krummrich

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