linux-kernel - Re: [PATCH] iphase: Adding a null pointer check

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Message-ID: <20231108184049.1f27de01@kernel.org>
Date:   Wed, 8 Nov 2023 18:40:49 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Andrey Shumilin <shum.sdl@...ct.ru>
Cc:     3chas3@...il.com, linux-atm-general@...ts.sourceforge.net,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        lvc-project@...uxtesting.org, khoroshilov@...ras.ru,
        ykarpov@...ras.ru, vmerzlyakov@...ras.ru, vefanov@...ras.ru
Subject: Re: [PATCH] iphase: Adding a null pointer check

On Tue,  7 Nov 2023 15:36:00 +0300 Andrey Shumilin wrote:
> The pointer <dev->desc_tbl[i].iavcc> is dereferenced on line 195.
> Further in the code, it is checked for null on line 204.
> It is proposed to add a check before dereferencing the pointer.

How do you know this is the right way to address the problem.
Much easier to debug a crash than misbehaving driver.

This is ancient code, leave it be.
-- 
pw-bot: reject
pv-bot: nit