On Tue, 08 Jun 2004 22:09:29 +0200
Felipe Alfaro Solana <felipe_alfaro@xxxxxxxxxxxxx> wrote:
> On Tue, 2004-06-08 at 12:42 -0700, Stephen Hemminger wrote:
> > On Tue, 08 Jun 2004 21:18:30 +0200
> > Felipe Alfaro Solana <felipe_alfaro@xxxxxxxxxxxxx> wrote:
> > > Hi!
> > >
> > > On my laptop, when using a CardBus 3c59x-based NIC, I need to run
> > > "cardctl eject" so the system won't freeze when resuming. "cardctl
> > > eject" worked fine in 2.6.7-rc2-mm2, even when there were programs with
> > > network sockets opened (for example, Evolution mantaining a connection
> > > against an IMAP server): the card is ejected (well, not physically),
> > > even when there are ESTABLISHED connections.
> > >
> > > However, starting with 2.6.7-rc3, "cardctl eject" hangs if a program
> > > holds any socket open. After a while the "unregister_netdevice: waiting
> > > for eth0 to become free" message starts appearing on the kernel message
> > > ring. The only apparent solution is killing that program, ejecting the
> > > card from its slot and wait until 3c59x.o usage count reaches zero.
> > >
> > > Can someone tell me what's going on here?
> > > Thank you very much.
> > What protocols are you running? Is IPV6 loaded?
> I'm using IPv4, IPv6 and IPSec ESP with AES/CBC.
> Do you want .config?
Not really, could you see if it is an IPv6 vs IPSec problem by not
one or the other.
What is happening is that some subsystem is holding a reference to the device
but not cleaning up (calling dev_put). It can be a hard to track which of the
things routing, etc are not being cleared properly. Look for routes that still
get stuck (ip route) and neighbor cache entries. Most of these end up being