linux-kernel - Re: [v3] mtd: spi-nor: cast to u64 to avoid uint overflows

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Date:   Mon,  3 Dec 2018 08:51:54 +0100
From:   Boris Brezillon <boris.brezillon@...tlin.com>
To:     Huijin Park <huijin.park@...sung.com>,
        Boris Brezillon <boris.brezillon@...tlin.com>
Cc:     linux-kernel@...r.kernel.org, Marek Vasut <marek.vasut@...il.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-mtd@...ts.infradead.org, bbanghj.park@...il.com
Subject: Re: [v3] mtd: spi-nor: cast to u64 to avoid uint overflows

On Wed, 2018-11-28 at 08:02:14 UTC, Huijin Park wrote:
> From: "huijin.park" <huijin.park@...sung.com>
> 
> The "params->size" is defined as "u64".
> And "info->sector_size" and "info->n_sectors" are defined as
> unsigned int and u16.
> Thus, u64 data might have strange data(loss data) if the result
> overflows an unsigned int.
> This patch casts "info->sector_size" to an u64.
> 
> Signed-off-by: huijin.park <huijin.park@...sung.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

Applied to http://git.infradead.org/linux-mtd.git mtd/next, thanks.

Boris