netdev - Re: [2.6.34-rc5-git6] EIP: is at inet6_csk_bind

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Date:	Sun, 25 Apr 2010 19:01:50 +0200
From:	Piotr Hosowicz <piotr@...owicz.com>
To:	sedat.dilek@...il.com
CC:	Sedat Dilek <sedat.dilek@...glemail.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	LKML <linux-kernel@...r.kernel.org>, netdev@...r.kernel.org,
	David Miller <davem@...emloft.net>,
	Jiri Olsa <jolsa@...hat.com>,
	Jongman Heo <jongman.heo@...il.com>
Subject: Re: [2.6.34-rc5-git6] EIP: is at inet6_csk_bind_conflict + 06xe/0xb7
 	[ipv6]

On 25.04.2010 18:55, Sedat Dilek wrote:
> Rebuild ipv6 kernel-modules by:
>
> $ make M=net/ipv6
>
> ...and copied net/ipv6/*.ko and net/ipv6/netfilter/*.ko files manually
> to the right place.
>
> Applied your patch (seen on netdev ML) already and booted into new kernel.
> Works, thanks.
>
> Tested-by: Sedat Dilek<sedat.dilek@...il.com>
>
> - Sedat -
>
> On Sun, Apr 25, 2010 at 6:39 PM, Eric Dumazet<eric.dumazet@...il.com>  wrote:
>> Le dimanche 25 avril 2010 à 18:36 +0200, Piotr Hosowicz a écrit :
>>> On 25.04.2010 18:31, Sedat Dilek wrote:
>>>> [ CCing netdev ML ]
>>>>
>>>> Confirmed: The revert-patch [1] fixes the problem here.
>>>
>>> I confirm, I've built a git6 kernel and it works fine.
>>>
>>>> See also "Bug 15847 -  crash in inet6_csk_bind_conflict" [2].
>>>>
>>>> Feel free to add a... Tested-by: Sedat Dilek<sedat.dilek@...il.com>
>>>
>>> I added created and tested phrase in my archive. ;-) Thank you a lot. I
>>> hope there will be no this error in git7.
>>>
>>
>> Did you test the proposed fix ?

Eric, but where to get the proposed fix as a patch? I looked at kernel's 
bugzilla and there is no such thing. As for now I applied Sedat's 
reverse patch and now I am booted fine in git6 kernel.

Regards,

Piotr Hosowicz

>> [PATCH] ipv6: Fix inet6_csk_bind_conflict()
>>
>> Commit fda48a0d7a84 (tcp: bind() fix when many ports are bound)
>> introduced a bug on IPV6 part.
>> We should not call ipv6_addr_any(inet6_rcv_saddr(sk2)) but
>> ipv6_addr_any(inet6_rcv_saddr(sk)) because sk2 can be IPV4, while sk is
>> IPV6.
>>
>> Reported-by: Michael S. Tsirkin<mst@...hat.com>
>> Signed-off-by: Eric Dumazet<eric.dumazet@...il.com>
>> ---
>> diff --git a/net/ipv6/inet6_connection_sock.c b/net/ipv6/inet6_connection_sock.c
>> index b4b7d40..3a4d92b 100644
>> --- a/net/ipv6/inet6_connection_sock.c
>> +++ b/net/ipv6/inet6_connection_sock.c
>> @@ -48,7 +48,7 @@ int inet6_csk_bind_conflict(const struct sock *sk,
>>                              ipv6_rcv_saddr_equal(sk, sk2))
>>                                 break;
>>                         else if (sk->sk_reuse&&  sk2->sk_reuse&&
>> -                               !ipv6_addr_any(inet6_rcv_saddr(sk2))&&
>> +                               !ipv6_addr_any(inet6_rcv_saddr(sk))&&
>>                                 ipv6_rcv_saddr_equal(sk, sk2))
>>                                 break;
>>                 }
>>
>>
>>


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NB: 2.6.34-rc5-git6
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