linux-kernel - Re: [PATCH -next v2] block: Fix the partition start may overflow in add

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Message-ID: <867dcc0a-c807-2851-e2c4-750a7646a97f@huawei.com>
Date:   Tue, 30 May 2023 21:42:06 +0800
From:   zhongjinghua <zhongjinghua@...wei.com>
To:     Eric Biggers <ebiggers@...nel.org>
CC:     <axboe@...nel.dk>, <linux-block@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <yi.zhang@...wei.com>,
        <yukuai3@...wei.com>
Subject: Re: [PATCH -next v2] block: Fix the partition start may overflow in
 add_partition()


在 2023/5/26 13:35, Eric Biggers 写道:
> On Thu, May 25, 2023 at 03:20:41PM +0800, Zhong Jinghua wrote:
>> +	if (p.start < 0 || p.length <= 0 || p.start + p.length < 0)
>> +		return -EINVAL;
> Were zero-length partitions allowed before?
Before this patch,  the io to the zero-length partition failed, I think 
it is meaningless, and it was fixed by the way
> - Eric