linux-kernel - Re: [PATCH v3] block: add check that partition length needs to be aligned with block size

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Message-ID: <f8a4e061-22ab-e30b-586b-3a569f5a379a@huaweicloud.com>
Date:   Thu, 29 Jun 2023 09:04:35 +0800
From:   Yu Kuai <yukuai1@...weicloud.com>
To:     Min Li <min15.li@...sung.com>, hch@....de
Cc:     axboe@...nel.dk, dlemoal@...nel.org, gregkh@...uxfoundation.org,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...nel.org, willy@...radead.org,
        "yukuai (C)" <yukuai3@...wei.com>
Subject: Re: [PATCH v3] block: add check that partition length needs to be
 aligned with block size

Hi,

在 2023/06/29 1:07, Min Li 写道:
> On Mon, Jun 28, 2023 at 04:48:36PM +0000, Christoph Hellwig  wrote:
>> They are long long in the UAPI, which is weird but has been that way
>> for a long time.  So I think we need checks for negative values
>> before they are shifted and converted to a sector_t.
> 
> Do you mean that we need to check if p.start and p.length are negative?
> 

Perhaps this patch will make sense.

https://lore.kernel.org/all/20230525072041.3701176-1-zhongjinghua@huawei.com/

Thanks,
Kuai
> Thanks for your reply
> 
> Min li
> .
>