linux-kernel - Re: [PATCH] pinctrl:sunplus: Add check for kmalloc

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Date:   Tue, 23 May 2023 19:42:48 +0300
From:   andy.shevchenko@...il.com
To:     Wells Lu <wellslutw@...il.com>
Cc:     linus.walleij@...aro.org, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org, wells.lu@...plus.com
Subject: Re: [PATCH] pinctrl:sunplus: Add check for kmalloc

Tue, May 23, 2023 at 06:11:28PM +0800, Wells Lu kirjoitti:
> Fix Smatch static checker warning:
> potential null dereference 'configs'. (kmalloc returns null)

...

>  			configs = kmalloc(sizeof(*configs), GFP_KERNEL);
> +			if (!configs)

> +				return -ENOMEM;

"Fixing" by adding a memory leak is not probably a good approach.

...

>  			configs = kmalloc(sizeof(*configs), GFP_KERNEL);
> +			if (!configs)
> +				return -ENOMEM;

Ditto.

...

It might be that I'm mistaken. In this case please add an explanation why in
the commit message.

-- 
With Best Regards,
Andy Shevchenko