linux-kernel - Re: [PATCH v4] iio: common: st_sensors: Fix use of uninitialize device structs

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Message-ID: <aDV1OF6EKqLMl2D8@smile.fi.intel.com>
Date: Tue, 27 May 2025 11:18:00 +0300
From: Andy Shevchenko <andy@...nel.org>
To: maudspierings@...ontroll.com
Cc: Jonathan Cameron <jic23@...nel.org>,
	David Lechner <dlechner@...libre.com>,
	Nuno Sá <nuno.sa@...log.com>,
	Christian Heusel <christian@...sel.eu>,
	Linus Walleij <linus.walleij@...aro.org>, linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH v4] iio: common: st_sensors: Fix use of uninitialize
 device structs

On Tue, May 27, 2025 at 08:36:08AM +0200, Maud Spierings via B4 Relay wrote:
> From: Maud Spierings <maudspierings@...ontroll.com>
> 
> Throughout the various probe functions &indio_dev->dev is used before it
> is initialized. This caused a kernel panic in st_sensors_power_enable()
> when the call to devm_regulator_bulk_get_enable() fails and then calls
> dev_err_probe() with the uninitialized device.
> 
> This seems to only cause a panic with dev_err_probe(), dev_err(),
> dev_warn() and dev_info() don't seem to cause a panic, but are fixed
> as well.
> 
> The issue is reported and traced here: [1]

FWIW,
Reviewed-by: Andy Shevchenko <andy@...nel.org>

-- 
With Best Regards,
Andy Shevchenko