Hi, On Mon, Feb 10, 2014 at 10:16:26AM -0800, Eric Dumazet wrote: > On Mon, 2014-02-10 at 18:33 +0100, Alexander Aring wrote: > > Hi Eric, > > > > On Sun, Feb 09, 2014 at 04:41:47AM -0800, Eric Dumazet wrote: > > > > > > Please try the following fix, thanks for this report ! > > > > > > diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c > > > index 48b25c0af4d0..069af33013c4 100644 > > > --- a/net/ieee802154/6lowpan.c > > > +++ b/net/ieee802154/6lowpan.c > > > @@ -533,7 +533,27 @@ static struct header_ops lowpan_header_ops = { > > > .create = lowpan_header_create, > > > }; > > > > > > +static struct lock_class_key lowpan_tx_busylock; > > > +static struct lock_class_key lowpan_netdev_xmit_lock_key; > > > + > > > +static void lowpan_set_lockdep_class_one(struct net_device *dev, > > > + struct netdev_queue *txq, > > > + void *_unused) > > > +{ > > > + lockdep_set_class(&txq->_xmit_lock, > > > + &lowpan_netdev_xmit_lock_key); > > > +} > > > + > > > + > > > +static int lowpan_dev_init(struct net_device *dev) > > > +{ > > > + netdev_for_each_tx_queue(dev, lowpan_set_lockdep_class_one, NULL); > > > + dev->qdisc_tx_busylock = &lowpan_tx_busylock; > > > + return 0; > > > +} > > > + > > > static const struct net_device_ops lowpan_netdev_ops = { > > > + .ndo_init = lowpan_dev_init, > > > .ndo_start_xmit = lowpan_xmit, > > > .ndo_set_mac_address = lowpan_set_address, > > > }; > > > > thanks, this fixed the issue. What we should do as next? > > > > Should I create a patch for this or do you want to make a patch? > > I'll take care of this, don't worry ;) > > Thanks for testing ! > no problem. Maybe you can try to give me some explanation what you did there? I see you make a lockdep_set_class for each tx queue and assign the lowpan_netdev_xmit_lock_key. So why it's better to make a own "lock_key". thanks. - Alex -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html