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Date: Mon, 11 May 2009 19:00:51 +0200
From: Lars Engels <lars.engels@0x20.net>
To: Jon Loeliger <jdl@jdl.com>
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Cc: freebsd-current@freebsd.org
Subject: Re: Lock order reversal
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On Mon, May 11, 2009 at 09:10:54AM -0500, Jon Loeliger wrote:
>=20
> Folks,
>=20
> Curious if anyone saw the lock order reversal in my
> post from yesterday?  Known issues?
>=20
> There appear to be 3 cases, highlighted below:
>=20
>  1st 0xc39e7a60 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2555
>  2nd 0xc3ffee00 dirhash (dirhash) @ /usr/src/sys/ufs/ufs/ufs_dirhash.c:275
>=20
>  1st 0xc4224164 ufs (ufs) @ /usr/src/sys/kern/vfs_mount.c:1050
>  2nd 0xc4224df4 devfs (devfs) @ /usr/src/sys/kern/vfs_subr.c:2101
>=20
>  1st 0xc44edc2c filedesc structure (filedesc structure) @ /usr/src/sys/ke=
rn/kern_descrip.c:1076
>  2nd 0xc4a9737c ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:4109
>=20
> Thanks,
> jdl

Hi Jon,

all three LORs are well known and listed here:
http://sources.zabbadoz.net/freebsd/lor.html

Cheers

Lars

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