linux-kernel - Re: NET_NS: unregister_netdevice: waiting for lo to become free (after using openvpn) (was Re: sysfs bug when using tun with network namespaces)

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Message-ID: <20100804153543.56f6ecad@xenia.leun.net>
Date:	Wed, 4 Aug 2010 15:35:43 +0200
From:	Michael Leun <lkml20100708@...ton.leun.net>
To:	greg@...ah.com
Cc:	netdev@...r.kernel.org, davem@...emloft.net,
	linux-kernel@...r.kernel.org
Subject: Re: NET_NS: unregister_netdevice: waiting for lo to become free
 (after using openvpn) (was Re: sysfs bug when using tun with network
 namespaces)

Hi,

On Sun, 11 Jul 2010 19:29:39 +0200
Michael Leun <lkml20100708@...ton.leun.net> wrote:

[...]
> Jul 10 20:02:36 doris kernel: unregister_netdevice: waiting for lo to
> become free. Usage count = 3 [repeated]
> 
> Now one might say it is fault of openvpn (used OpenVPN 2.1_rc20
> i586-suse-linux - the one in openSuSE 11.2 package), openvpn didn't
> close some ressource and ssh does fine.
> 
> But: should'nt kernel clean up after process when it exits?
> And/or: Should'nt kernel clean up if last process in network namespace
> exits - there is nothing left which might use that interface?!
> 
> Greg KH <greg@...ah.com> wrote:
> 
> > Yes, you are correct.  Care to resend all of this to the
> > network-namespace developer(s) and the netdev mailing list so that
> > the correct people are notified so they can fix it all?
> 
> [X] done - hopefully, cannot find a particular network namespace
> developer in MAINTAINERS or source files. If such a one exists, please
> forward.

Did'nt work. Got no reaction from network mailinglist at all and bug
still is in 2.6.35.

-- 
MfG,

Michael Leun

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