linux-kernel - Re: [PATCH 00/10] mei: vsc: Various bug-fixes

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Message-ID: <aFvGwlin0q8YWkZO@kekkonen.localdomain>
Date: Wed, 25 Jun 2025 09:52:02 +0000
From: Sakari Ailus <sakari.ailus@...ux.intel.com>
To: Hans de Goede <hansg@...nel.org>
Cc: Stanislaw Gruszka <stanislaw.gruszka@...ux.intel.com>,
	Alexander Usyskin <alexander.usyskin@...el.com>,
	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/10] mei: vsc: Various bug-fixes

Hi Hans,

On Mon, Jun 23, 2025 at 10:50:42AM +0200, Hans de Goede wrote:
> Hi All,
> 
> When running a kernel with CONFIG_PROVE_RAW_LOCK_NESTING on any laptop
> with an Intel Visual Sensing Controller chip, the vsc-tp code will
> trigger a lockdep warning.
> 
> While investigating this I noticed a bunch of other issues / bugs in
> the VSC code, resulting in the first 9 patches of this series, fixing:
> 
> - An unnecessary 11 second delay on shutdown / reboot
> - Destroying the mutex while the threaded ISR which uses it might still
>   be running
> - Racy use of the event_notify callback
> - Dead event_notify callback still being registered after remove()
> - Thread ISR waiting for hard ISR to run a second/third time
> - The lockdep issue starting all this
> - And some cleanups while at it...
> 
> Patch 10 is a generic mei debug patch to help catch similar
> use-after-free issues as the on I fixed recently [1].

Thanks for the set.

Reviewed-by: Sakari Ailus <sakari.ailus@...ux.intel.com>

-- 
Sakari Ailus