linux-kernel - Re: [PATCH] gpio: shared: fix a NULL-pointer dereference

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Message-ID: <6a6e7d2b-dfe5-443f-8496-4429bef391a6@sirena.org.uk>
Date: Tue, 18 Nov 2025 20:08:30 +0000
From: Mark Brown <broonie@...nel.org>
To: Bartosz Golaszewski <brgl@...ev.pl>
Cc: Linus Walleij <linus.walleij@...aro.org>, linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH] gpio: shared: fix a NULL-pointer dereference

On Tue, Nov 18, 2025 at 09:04:59PM +0100, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> 
> The fact that CONFIG_OF is enabled does not mean that the device tree is
> populated and that of_root points to a valid device node. Check if it's
> NULL before trying to traverse the tree.

Tested-by: Mark Brown <broonie@...nel.org>

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