linux-kernel - Re: linux-next: Tree for December 9

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Message-Id: <20081209173048.18382f6d.akpm@linux-foundation.org>
Date:	Tue, 9 Dec 2008 17:30:48 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"Kay Sievers" <kay.sievers@...y.org>
Cc:	sfr@...b.auug.org.au, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org, adobriyan@...il.com,
	Greg <greg@...ah.com>, NeilBrown <neilb@...e.de>
Subject: Re: linux-next: Tree for December 9

On Wed, 10 Dec 2008 01:31:13 +0100 "Kay Sievers" <kay.sievers@...y.org> wrote:

> > akpm2:/home/akpm# udevmonitor
> > udevmonitor prints the received event from the kernel [UEVENT]
> > and the event which udev sends out after rule processing [UDEV]
> >
> > UDEV  [1228867146.103334] add@...ass/bdi/9:0
> > UDEV  [1228867146.107566] remove@...ock/md0
> > UDEV  [1228867146.111969] remove@...ass/bdi/9:0
> > UEVENT[1228867146.119889] add@...ock/md0
> > UEVENT[1228867146.119964] add@...ass/bdi/9:0
> > UEVENT[1228867146.120162] remove@...ass/bdi/9:0
> > UEVENT[1228867146.120205] remove@...ock/md0
> > UDEV  [1228867146.122839] add@...ock/md0
> > UDEV  [1228867146.129125] add@...ass/bdi/9:0
> > UDEV  [1228867146.133459] remove@...ock/md0
> > UDEV  [1228867146.137813] remove@...ass/bdi/9:0
> > UEVENT[1228867146.145652] add@...ock/md0
> 
> Weird loop, something is accessing /dev/md0, i guess, which creates
> the kernel device, and the event, which accesses /dev/md0 again and it
> goes crazy. Maybe caused by changes Neil did.

I knew an Australian was to blame - it's just a matter of determining
which one.

> Do you use md devices on that box?

Nope.
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