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Date: Tue, 31 Dec 2013 04:57:18 +0100 From: Hannes Frederic Sowa <hannes@...essinduktion.org> To: David Miller <davem@...emloft.net> Cc: gaofeng@...fujitsu.com, kumaran.4353@...il.com, netdev@...r.kernel.org, chenweilong@...wei.com Subject: Re: [PATCH] ipv6: don't call addrconf_dst_alloc again when enable lo On Wed, Jun 19, 2013 at 11:05:32PM -0700, David Miller wrote: > From: Gao feng <gaofeng@...fujitsu.com> > Date: Sun, 16 Jun 2013 11:14:30 +0800 > > > If we disable all of the net interfaces, and enable > > un-lo interface before lo interface, we already allocated > > the addrconf dst in ipv6_add_addr. So we shouldn't allocate > > it again when we enable lo interface. > > > > Otherwise the message below will be triggered. > > unregister_netdevice: waiting for sit1 to become free. Usage count = 1 > > > > This problem is introduced by commit 25fb6ca4ed9cad72f14f61629b68dc03c0d9713f > > "net IPv6 : Fix broken IPv6 routing table after loopback down-up" > > > > Signed-off-by: Gao feng <gaofeng@...fujitsu.com> > > This is the second such regression added by that commit :-/ > > Applied and queue up for -stable, thanks. Hmm, and this change also has a regression and breaks the original fix. :/ https://bugzilla.kernel.org/show_bug.cgi?id=67951 I tried to track it down but it seems pretty complicated. Maybe we have to special-case the take-down of the loopback device. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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