From mboxrd@z Thu Jan  1 00:00:00 1970
From: NeilBrown <neilb@suse.de>
Subject: Re: linux-image-2.6.32-5-686: kernel BUG at ...
 build/source_i386_none/drivers/md/raid5.c:2764!
Date: Sun, 24 Jun 2012 18:21:46 +1000
Message-ID: <20120624182146.7d63fbbb@notabene.brown>
References: <20120622121953.GA25149@calhariz.com>
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On Fri, 22 Jun 2012 13:19:53 +0100 Jose Manuel dos Santos Calhariz
<jose.spam@netvisao.pt> wrote:

>=20
> In another day during the periodic mdadm RAID check:=20
>  - the linux kernel gave a kernel BUG,=20
>  - tried to kick out a failed disk and=20
>  - stopped accepting I/O to the affected raid. =20
>=20
> The affected programs were in state D.  The only way to recover was to
> do a reboot.  After reboot the problematic disk was replaced.
>=20
> I reported the bug to Debian and is there all the information about it:
>=20
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=3D675969
>=20
> I was asked to report the BUG here in case someone knows what happened.
>=20
> Here is a summary of the more relevant information:
>=20
> This machine have 2 x RAID6 with 6 disks each, for a total of 12 disks.=20
>=20
> I have 5 systems with a similar setup and only one failed, maybe
> because of the failing disk.  I will use one of the systems to try to
> reproduce the bug, before triyng a new kernel.
>=20
>=20
> The proprietary module is the openafs filesystem v1.6.1 backported
> from Debian testing.
>=20
> The kernel bug is:
>=20
>=20
> build/source_i386_none/drivers/md/raid5.c:2764!

This bug was fixed in 2.6.32.49 and 3.2

http://git.kernel.org/?p=3Dlinux/kernel/git/stable/linux-stable.git;a=3Dcom=
mitdiff;h=3D61d433c479a6ccfed6a7e73e6111ca8fa0348c63

http://git.kernel.org/?p=3Dlinux/kernel/git/torvalds/linux.git;a=3Dcommitdi=
ff;h=3D9a3f530f39f4490eaa18b02719fb74ce5f4d2d86

NeilBrown

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