Re: 2.6.32-rc5-mmotm1101 - kernel BUG at net/ipv4/tcp_input.c:3707!

[Gilad Ben-Yossef]

Valdis.Kletnieks@xxxxxx wrote:

> On Tue, 03 Nov 2009 23:34:19 +0200, Ilpo JÀrvinen said:
>
>   
> > On Tue, 3 Nov 2009, Gilad Ben-Yossef wrote:
> >
> >     
> > > Eric Dumazet wrote:
> > >
> > >       
> > > > Valdis.Kletnieks@xxxxxx a écrit :
> > > >   
> > > >         
> > > > > Seen right after I started 'fetchmail'.  Reproducible - 3 out of 3.
> > > > > I'll bisect this tonight if nobody jumps up and yells they know what it
> > > > > is...
> > > > >     
> > > > >           
> > > Bah... this is most probably my fault. Sorry about that.
> > >
> > > Can you please try the patch in the next email?
> > >       
>
> Tried while at home, machine panic'ed.  No netconsole here at the moment, sorry.
>   

Ok, thanks.That is ... strange.

I didn't manage to recreate this here with a simple IPv6 set and netcat
as server client but I will try further, but if there is any way to send me
the crash location that would be a big help. Thanks.
>   
>
> Why was this blowing chunks in the IPv6 when I was making an IPv4 connection
> then? I just noticed that. My fetchmail can't make an IPv6 TCP connection to
> our IMAP server because the server isn't v6-enabled yet.  And although I
> contact our DNS over IPv6, but that's UDP not TCP.
>
>   
I don't think the chunk blowing occurred due to the connection to the IMAP
server. That codes deals with incoming SYNs. I guess it happened when 
fetchmail
tried to connect to the local mail daemon and this should be happening 
over the loopback interface...


Gilad


--
Gilad Ben-Yossef
Chief Coffee Drinker & CTO
Codefidence Ltd.

Web:   http://codefidence.com
Cell:  +972-52-8260388
Skype: gilad_codefidence
Tel:   +972-8-9316883 ext. 201
Fax:   +972-8-9316884
Email: gilad@xxxxxxxxxxxxxxx

Check out our Open Source technology and training blog - http://tuxology.net

	"The biggest risk you can take it is to take no risk."
		-- Mark Zuckerberg and probably others

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/