linux-kernel - Re: [PATCH] pinctrl: single: fix potential NULL dereference

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Message-ID: <CACRpkdYwBNjGzODYqvz+oScsO3u=R0dXMkP4UfqmosDugPFWRA@mail.gmail.com>
Date:   Fri, 27 Jan 2023 13:44:20 +0100
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Maxim Korotkov <korotkov.maxim.s@...il.com>
Cc:     Tony Lindgren <tony@...mide.com>,
        Haojian Zhuang <haojian.zhuang@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        lvc-project@...uxtesting.org
Subject: Re: [PATCH] pinctrl: single: fix potential NULL dereference

On Fri, Nov 18, 2022 at 11:43 AM Maxim Korotkov
<korotkov.maxim.s@...il.com> wrote:

> Added checking of pointer "function" in pcs_set_mux().
> pinmux_generic_get_function() can return NULL and the pointer
> "function" was dereferenced without checking against NULL.
>
> Found by Linux Verification Center (linuxtesting.org) with SVACE.
>
> Fixes: 571aec4df5b7 ("pinctrl: single: Use generic pinmux helpers for managing functions")
> Signed-off-by: Maxim Korotkov <korotkov.maxim.s@...il.com>

Patch applied for fixes.

Yours,
Linus Walleij