linux-kernel - Re: 24rc8: unregister_netdevice: waiting for ... to become free

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Message-Id: <1209743832.22773.19.camel@localhost>
Date:	Fri, 02 May 2008 17:57:12 +0200
From:	Soeren Sonnenburg <kernel@....de>
To:	Roland <devzero@....de>
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	"\"Andrew Morton\"" <akpm@...ux-foundation.org>
Subject: Re: 24rc8: unregister_netdevice: waiting for ... to become free

On Fri, 2008-05-02 at 11:31 +0200, Roland wrote:
> >I am not exactly sure which kernel version Roland (?) is/was using but
> >from what I can tell this bug is fixed since 2.6.24 (at least). Well I
> >didn't see it with madwifi nor with the tun devices anymore on any of
> >the 24.X or 25rc's/25 ...
> 
> pardon,   2.6.25-git17 in vmware

could you test if this happens with other drivers like tun etc too?
Maybe the bug re-appeared (I didn't follow 2.6.26 development ...)

Soeren

> >; <netdev@...r.kernel.org>;
> List:       linux-kernel
> Subject:    Re: 24rc8: unregister_netdevice: waiting for ... to become free.
> From:       Soeren Sonnenburg <kernel () nn7 ! de>
> Date:       2008-05-02 6:15:43
> Message-ID: 1209708943.23075.52.camel () localhost
> [Download message RAW]
> 
> On Thu, 2008-05-01 at 22:59 -0700, Andrew Morton wrote:
> > On Fri, 2 May 2008 03:26:28 +0200 "Roland" <devzero@....de> wrote:
> >
> > > i`m also seeing this one, but with pcnet32 - "modprobe -r pcnet32" never
> > > returns and
> > >
> > > "unregister_netdevice: waiting for eth0 to become free. Usage count = 1"
> > >
> > > being printed over and over again
> > >
> > > lsmod |grep pcnet32 shows
> > >
> > > pcnet32            35828    0
> > > mii                      9344    1    pcnet32
> > >
> > > i see stale ssh connection on port 22 and sshd for that session remains
> > > unkillable process.
> > >
> >
> > here a bug
> >
> > >
> > >
> > > List:       linux-kernel
> > > Subject:    Re: 24rc8: unregister_netdevice: waiting for ... to become 
> > > free.
> > > From:       Soeren Sonnenburg <kernel () nn7 ! de>
> > > Date:       2008-01-29 8:59:10
> > > Message-ID: 1201597150.4973.10.camel () localhost
> > > [Download message RAW]
> > >
> > > On Tue, 2008-01-22 at 22:44 -0800, David Miller wrote:
> > > > From: Soeren Sonnenburg <kernel@....de>
> > > > Date: Wed, 23 Jan 2008 07:42:21 +0100
> > > >
> > > > > Dear all,
> > > > >
> > > > > since some 2.6.24rc version I suddenly experience such messages on
> > > > > console when trying to shutdown a vpn connection:
> > > > >
> > > > > unregister_netdevice: waiting for tun0 to become free. Usage count = 
> > > > > 1
> > > > >
> > > > > or when removing an usb wlan dongle (although it was ifconfig wlan0
> > > > > down'd before)
> > > >
> > > > Current GIT already has a fix for this, attached below:
> > >
> > > hmmhhh, I am still seeing this problem on 2.6.24 with at least with the
> > > madwifi driver...
> > >
> > > Soeren
> >
> > there a bug.
> >
> >
> > Let's cc netdev@...r.kernel.org - linux-net is dead, afaik.
> >
> > Thanks for reporting all these bugs but please do take much mure care over
> > the cc's.  Be sure to cc every party who was cc'ed on the email to which
> > you're replying.  I restored Soeren.
> 
> I am not exactly sure which kernel version Roland (?) is/was using but
> from what I can tell this bug is fixed since 2.6.24 (at least). Well I
> didn't see it with madwifi nor with the tun devices anymore on any of
> the 24.X or 25rc's/25 ...
> 
> Soeren
> 
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