linux-kernel - BUG:write data to degrade raid5

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Date:	Fri, 19 Mar 2010 18:29:28 +0800
From:	jin zhencheng <zhenchengjin@...il.com>
To:	neilb@...e.de, linux-raid@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: BUG:write data to degrade raid5

hi;

i use kernel is 2.6.26.2

what i do as follow:

1, I create a raid5:
mdadm -C /dev/md5 -l 5 -n 4 /dev/sda /dev/sdb /dev/sdc  /dev/sdd
--metadata=1.0 --assume-clean

2, dd if=/dev/zero of=/dev/md5 bs=1M &

write data to this raid5

3, mdadm --manage /dev/md5 -f /dev/sda

4 mdadm --manage  /dev/md5 -f /dev/sdb

if i faild 2 disks ,then the OS kernel display OOP error and kernel down


do somebody know why ?

Is MD/RAID5 bug ?
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