netdev - Re: packet: Improve exception handling in fanout

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Date: Mon, 1 Jan 2024 10:46:45 +0100
From: Markus Elfring <Markus.Elfring@....de>
To: Willem de Bruijn <willemdebruijn.kernel@...il.com>,
 netdev@...r.kernel.org, kernel-janitors@...r.kernel.org,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Stephen Hemminger <stephen@...workplumber.org>
Cc: LKML <linux-kernel@...r.kernel.org>
Subject: Re: packet: Improve exception handling in fanout_add()

> It is fine to call kfree with a possible NULL pointer:
…
> 	 * If @object is NULL, no operation is performed.
> 	 */
> 	void kfree(const void *object)

Such a function call triggers an input parameter validation
with a corresponding immediate return, doesn't it?
Do you find such data processing really helpful for the desired error/exception handling?

Regards,
Markus