diff options
| author | Ursula Braun <ursula.braun@de.ibm.com> | 2010-10-24 23:06:43 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-11-22 11:00:06 -0800 |
| commit | 03b965ed6e985cd528b5a2eda0b2ddcb9fd542ef (patch) | |
| tree | bd0aa31c5f071f093401e64755793941a5373816 | |
| parent | f75c81af1527ad2a4d413ee03c55afdc681e4392 (diff) | |
ipv6: fix refcnt problem related to POSTDAD state
[ Upstream commit 801715f95be37b865af83b9909ad93da141a9306 ]
After running this bonding setup script
modprobe bonding miimon=100 mode=0 max_bonds=1
ifconfig bond0 10.1.1.1/16
ifenslave bond0 eth1
ifenslave bond0 eth3
on s390 with qeth-driven slaves, modprobe -r fails with this message
unregister_netdevice: waiting for bond0 to become free. Usage count = 1
due to twice detection of duplicate address.
Problem is caused by a missing decrease of ifp->refcnt in addrconf_dad_failure.
An extra call of in6_ifa_put(ifp) solves it.
Problem has been introduced with commit f2344a131bccdbfc5338e17fa71a807dee7944fa.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | net/ipv6/addrconf.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 784f34d11fdd..0bbaddc32935 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -1424,8 +1424,10 @@ void addrconf_dad_failure(struct inet6_ifaddr *ifp) { struct inet6_dev *idev = ifp->idev; - if (addrconf_dad_end(ifp)) + if (addrconf_dad_end(ifp)) { + in6_ifa_put(ifp); return; + } if (net_ratelimit()) printk(KERN_INFO "%s: IPv6 duplicate address %pI6c detected!\n", |