linux-kernel - Re: [PATCH] mfd: macsmc: Initialize mutex

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Message-ID: <20251001095505.GP8757@google.com>
Date: Wed, 1 Oct 2025 10:55:05 +0100
From: Lee Jones <lee@...nel.org>
To: Markus Elfring <Markus.Elfring@....de>
Cc: Janne Grunau <j@...nau.net>, asahi@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	LKML <linux-kernel@...r.kernel.org>, Neal Gompa <neal@...pa.dev>,
	Sven Peter <sven@...nel.org>
Subject: Re: [PATCH] mfd: macsmc: Initialize mutex

On Sat, 27 Sep 2025, Markus Elfring wrote:

> > Struct apple_smc's mutex was not initialized before use. Surprisingly
> > this only resulted in occasional NULL pointer dereferences in
> > apple_smc_read() calls from the probe() functions of sub devices.
> 
> See also:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.17-rc7#n94

Provide some context in your own words.

Don't expect others to click random links.

-- 
Lee Jones [李琼斯]