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From: Caizhiyong <caizhiyong@hisilicon.com>
To: Wang YanQing <udknight@gmail.com>, "axboe@kernel.dk" <axboe@kernel.dk>
Cc: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	"pombredanne@nexb.com" <pombredanne@nexb.com>,
	"tglx@linutronix.de" <tglx@linutronix.de>,
	"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Jiangheng <jiangheng@hisilicon.com>
Subject: RE: [PATCH] block: add verifier for cmdline partition
Date: Fri, 4 May 2018 07:07:30 +0000	[thread overview]
Message-ID: <C3050A4DBA34F345975765E43127F10F8B77159A@dggemm511-mbs.china.huawei.com> (raw)
In-Reply-To: <20180503111748.GA904@udknight>

> -----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

> Signed-off-by: Wang YanQing <udknight@gmail.com>
> ---
>  block/partitions/cmdline.c | 63
> +++++++++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 62 insertions(+), 1 deletion(-)
> 

  reply	other threads:[~2018-05-04  7:07 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-03 11:17 Wang YanQing
2018-05-04  7:07 ` Caizhiyong [this message]
2018-05-04 14:20   ` Jens Axboe

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