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List: linux-s390
Subject: Re: [patch 1/1] [PATCH BUG_FIX] ipv6: fix refcnt problem related
From: David Miller <davem () davemloft ! net>
Date: 2010-10-27 18:10:14
Message-ID: 20101027.111014.260072078.davem () davemloft ! net
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From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Mon, 25 Oct 2010 16:01:32 -0700
> On Mon, Oct 25, 2010 at 11:06:43AM +0200, Ursula Braun wrote:
>> Subject: [patch 1/1] [PATCH BUG_FIX] ipv6: fix refcnt problem related to POSTDAD state
>>
>> From: Ursula Braun <ursula.braun@de.ibm.com>
>>
>> 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>
>
> Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
>
> Thanks for catching this!
Applied, thanks everyone.
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