On 5/4/18 1:07 AM, Caizhiyong wrote: >> -----Original Message----- >> From: Wang YanQing [mailto:udknight@xxxxxxxxx] >> Sent: Thursday, May 03, 2018 7:18 PM >> To: axboe@xxxxxxxxx >> Cc: gregkh@xxxxxxxxxxxxxxxxxxx; pombredanne@xxxxxxxx; >> tglx@xxxxxxxxxxxxx; Caizhiyong <caizhiyong@xxxxxxxxxxxxx>; linux- >> block@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx >> 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
