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SubjectRe: [PATCH] block: add verifier for cmdline partition
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On 5/4/18 1:07 AM, Caizhiyong wrote:
>> -----Original Message-----
>> From: Wang YanQing [mailto:udknight@gmail.com]
>> Sent: Thursday, May 03, 2018 7:18 PM
>> To: axboe@kernel.dk
>> Cc: gregkh@linuxfoundation.org; pombredanne@nexb.com;
>> tglx@linutronix.de; Caizhiyong <caizhiyong@hisilicon.com>; linux-
>> block@vger.kernel.org; linux-kernel@vger.kernel.org
>> Subject: [PATCH] block: add verifier for cmdline partition
>>
>> I meet strange filesystem corruption issue recently, the reason
>> is there are overlaps partitions in cmdline partition argument.
>>
>> This patch add verifier for cmdline partition, then if there are
>> overlaps partitions, cmdline_partition will return error and log
>> a error message.
>>
>
> Partition overlap was intentionally designed in this cmdline partition.
> some time, the cmdline partition save raw data(not filesystem), the overlap makes data access very convenient.
>
> reference http://lists.infradead.org/pipermail/linux-mtd/2013-August/048092.html

Might make sense to warn about it at least, it can be very surprising if
it happens inadvertently.

--
Jens Axboe

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