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Message-ID: <da21ac06-666f-01f1-fa8d-f660a83a9182@kernel.org>
Date:   Mon, 19 Jun 2023 10:20:53 +0900
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Subject: Re: [PATCH v4] block: add capacity validation in bdev_add_partition()
To:     Min Li <min15.li@samsung.com>, axboe@kernel.dk,
        willy@infradead.org, hch@lst.de, gregkh@linuxfoundation.org,
        wsa@kernel.org, vkoul@kernel.org
Cc:     linux-block@vger.kernel.org, linux-kernel@vger.kernel.org
References: <CGME20230619011354epcas5p32c094e0c9bcd1ec2184c66a5f8be3268@epcas5p3.samsung.com>
 <20230619091214.31615-1-min15.li@samsung.com>
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From:   Damien Le Moal <dlemoal@kernel.org>
Organization: Western Digital Research
In-Reply-To: <20230619091214.31615-1-min15.li@samsung.com>
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On 6/19/23 18:12, Min Li wrote:
> In the function bdev_add_partition(),there is no check that the start
> and end sectors exceed the size of the disk before calling add_partition.
> When we call the block's ioctl interface directly to add a partition,
> and the capacity of the disk is set to 0 by driver,the command will
> continue to execute.
> 
> Signed-off-by: Min Li <min15.li@samsung.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>

Reviewed-by: Damien Le Moal <dlemoal@kernel.org>


-- 
Damien Le Moal
Western Digital Research