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| author | Gao feng <gaofeng@cn.fujitsu.com> | 2013-06-16 11:14:30 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-28 16:25:56 -0700 |
| commit | dabed30c3f3af3afd343ad33e3fa0b741ffdebb3 (patch) | |
| tree | 0113bf4e85da58c76105f130e33c17223c947166 /net | |
| parent | 251d33ece34f261875830e0dfd52e53a10ac13dc (diff) | |
| download | lwn-dabed30c3f3af3afd343ad33e3fa0b741ffdebb3.tar.gz lwn-dabed30c3f3af3afd343ad33e3fa0b741ffdebb3.zip | |
ipv6: don't call addrconf_dst_alloc again when enable lo
[ Upstream commit a881ae1f625c599b460cc8f8a7fcb1c438f699ad ]
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@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv6/addrconf.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index f4fe3c022d93..1217f2e375e5 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2429,6 +2429,9 @@ static void init_loopback(struct net_device *dev) if (sp_ifa->flags & (IFA_F_DADFAILED | IFA_F_TENTATIVE)) continue; + if (sp_ifa->rt) + continue; + sp_rt = addrconf_dst_alloc(idev, &sp_ifa->addr, 0); /* Failure cases are ignored */ |