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Message-ID: <9a8748490608310817v7d722f88u167b5a84d0ff67e8@mail.gmail.com>
Date: Thu, 31 Aug 2006 17:17:20 +0200
From: "Jesper Juhl" <jesper.juhl@gmail.com>
To: "Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>
Subject: Unable to halt or reboot due to - unregister_netdevice: waiting for eth0.20 to become free. Usage count = 1
Cc: "Mark Evans" <evansmp@uhura.aston.ac.uk>,
       "Fred N. van Kempen" <waltje@uWalt.NL.Mugnet.ORG>,
       "Ross Biro" <ross.biro@gmail.com>, davem@davemloft.net,
       yoshfuji@linux-ipv6.org, "Ben Greear" <greearb@candelatech.com>,
       netdev@vger.kernel.org
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Hi,

I've got a small problem with 2.6.18-rc5-git2.

I've got a vlan setup on eth0.20, eth0 does not have an IP.

When I attempt to reboot or halt the machine I get the following
message from the loop in net/core/dev.c::netdev_wait_allrefs() where
it waits for the ref-count to drop to zero.
Unfortunately the ref-count stays at 1 forever and the server never
gets any further.

  unregister_netdevice: waiting for eth0.20 to become free. Usage count = 1

I googled a bit and found that people have had similar problems in the
past and could work around them by shutting down the vlan interface
before the 'lo' interface. I tried that and indeed, it works.

Any idea how we can get this fixed?


-- 
Jesper Juhl <jesper.juhl@gmail.com>
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