linux-kernel - Re: [PATCH v1 04/14] futex: Validate futex value against futex size

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Message-ID: <87y1iwm2cx.ffs@tglx>
Date:   Mon, 31 Jul 2023 19:12:46 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Peter Zijlstra <peterz@...radead.org>, axboe@...nel.dk
Cc:     linux-kernel@...r.kernel.org, peterz@...radead.org,
        mingo@...hat.com, dvhart@...radead.org, dave@...olabs.net,
        andrealmeid@...lia.com, Andrew Morton <akpm@...ux-foundation.org>,
        urezki@...il.com, hch@...radead.org, lstoakes@...il.com,
        Arnd Bergmann <arnd@...db.de>, linux-api@...r.kernel.org,
        linux-mm@...ck.org, linux-arch@...r.kernel.org,
        malteskarupke@....de
Subject: Re: [PATCH v1 04/14] futex: Validate futex value against futex size

On Fri, Jul 21 2023 at 12:22, Peter Zijlstra wrote:
> +static inline bool futex_validate_input(unsigned int flags, u64 val)
> +{
> +	int bits = 8 * futex_size(flags);
> +	if (bits < 64 && (val >> bits))

New line between declaration and code. 

> +		return false;
> +	return true;
> +}

Other than that::

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>