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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sun, 25 Apr 2010 18:55:52 +0200
From:	Sedat Dilek <sedat.dilek@...glemail.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	piotr@...owicz.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]

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 ?
>
>
> [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;
>                }
>
>
>

View attachment "ipv6-Fix-inet6_csk_bind_conflict.patch" of type "text/x-diff" (882 bytes)