netdev - Re: BUG - qdev - partial loss of network connectivity

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:	Tue, 28 Sep 2010 11:50:58 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Leszek Urbanski <tygrys@....pl>
Cc:	Anthony Liguori <anthony@...emonkey.ws>, qemu-devel@...gnu.org,
	netdev@...r.kernel.org, linux-nfs@...r.kernel.org,
	virtualization@...ts.linux-foundation.org
Subject: Re: BUG - qdev - partial loss of network connectivity

On Mon, Sep 27, 2010 at 11:32:03PM +0200, Leszek Urbanski wrote:
> <20100926154324.GD21843@...hat.com>; from Michael S. Tsirkin on Sun, Sep 26, 2010 at 17:43:24 +0200
> 
> > > > >It's vanilla 2.6.32.22, but I also reproduced this on Debian's 2.6.32-23
> > > > >(based on 2.6.32.21).
> > > > >
> > > > >If offload is the only difference, I'll play with different offload
> > > > >options and check which one causes it.
> > > > >   
> > > > 
> > > > It's not technically the only difference but it's the most likely 
> > > > culprit IMHO.
> > > 
> > > udp fragmentation offload is definitely the culprit.
> > 
> > I see. Most likely guest bug - won't be the first bug around UFO.
> > If so pls copy netdev linux-nfs and virtualization.
> > Do you see anything in dmesg? Can try 2.6.36-rc5?
> 
> (for reference: first post is at:
> http://lists.nongnu.org/archive/html/qemu-devel/2010-09/msg01685.html )
> 
> I can't reproduce it on 2.6.36-rc5. Do you have an idea which patch may have
> fixed it, or should I dissect?

bisect, yes: there were many UFO related patches since 2.6.32.

-- 
MST
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html