netdev - Re: [3.15-rc3] Bisected: xen-netback mangles packets between two guests on a bridge since merge of "TX grant mapping with SKBTX_DEV

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]

Message-ID: <53691848.5010809@citrix.com>
Date:	Tue, 6 May 2014 18:13:44 +0100
From:	Zoltan Kiss <zoltan.kiss@...rix.com>
To:	Steven Haigh <netwiz@....id.au>,
	Sander Eikelenboom <linux@...elenboom.it>
CC:	<netdev@...r.kernel.org>, "David S. Miller" <davem@...emloft.net>,
	Ian Campbell <Ian.Campbell@...rix.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	<xen-devel@...ts.xen.org>
Subject: Re: [3.15-rc3] Bisected: xen-netback mangles packets between two
 guests on a bridge since merge of "TX grant mapping with SKBTX_DEV_ZEROCOPY
 instead of copy" series.

On 06/05/14 18:07, Steven Haigh wrote:
> On a related note, I'm seeing this on an Arch Linux DomU and kernel
> 3.14.2. Its running aria2c bit torrent client.
>
> The Dom0 is EL6 with Xen 4.2.4 / 3.14.2 kernel.
>
> I also lodged this on the Arch bug tracker:
> 	https://bugs.archlinux.org/task/40244
>
> In a nutshell, I see:
> [ 7432.398096] xen_netfront: xennet: skb rides the rocket: 19 slots
> [ 7434.270870] xen_netfront: xennet: skb rides the rocket: 19 slots
> [ 7434.782199] xen_netfront: xennet: skb rides the rocket: 19 slots
> [ 7435.184794] xen_netfront: xennet: skb rides the rocket: 19 slots
> [ 7437.530677] xen_netfront: xennet: skb rides the rocket: 19 slots
> [ 7437.973905] xen_netfront: xennet: skb rides the rocket: 19 slots
> [ 7438.383947] xen_netfront: xennet: skb rides the rocket: 19 slots

Can you also see packet corruption? You can find a testfile generator in 
Sander's mail, downloading from an Apache server with wget seems to be OK.

Zoli
--
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