NetBSD Problem Report #45956
From riz@wintermute.localdomain Thu Feb 9 04:40:46 2012
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Date: Wed, 8 Feb 2012 19:22:29 -0800 (PST)
From: riz@NetBSD.org
Reply-To: riz@NetBSD.org
To: gnats-bugs@gnats.NetBSD.org
Subject: Network packet corruption on MP kernel
X-Send-Pr-Version: 3.95
>Number: 45956
>Category: port-xen
>Synopsis: ssh disconnects with corrupt packet with MP kernel
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: port-xen-maintainer
>State: closed
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Thu Feb 09 04:45:00 +0000 2012
>Closed-Date: Sat May 20 19:18:54 +0000 2017
>Last-Modified: Sat May 20 19:18:54 +0000 2017
>Originator: Jeff Rizzo <riz@NetBSD.org>
>Release: NetBSD 5.99.64
>Organization:
>Environment:
System: NetBSD ip-10-252-1-233.us-west-2.compute.internal 5.99.64 NetBSD 5.99.64 (XEN3PAE_DOMU) #2: Tue Feb 7 20:13:15 PST 2012 riz@wintermute:/space/build/obj.i386/sys/arch/i386/compile/XEN3PAE_DOMU i386
Architecture: i386
Machine: i386
>Description:
With an MP kernel on a domU (I've seen it on both amd64 and i386 PAE),
terminal output (such as a build.sh) will sometimes disconnect with
the following message:
Corrupted MAC on input.
Disconnecting: Packet corrupt
I haven't seen this on anything but MP xen (that I'm aware of).
>How-To-Repeat:
Run a fast build with lots of output on a -current xen domU.
>Fix:
None given.
>Release-Note:
>Audit-Trail:
From: Manuel Bouyer <bouyer@antioche.eu.org>
To: gnats-bugs@NetBSD.org
Cc: port-xen-maintainer@NetBSD.org, gnats-admin@NetBSD.org,
netbsd-bugs@NetBSD.org
Subject: Re: port-xen/45956: Network packet corruption on MP kernel
Date: Thu, 9 Feb 2012 15:32:14 +0100
On Thu, Feb 09, 2012 at 04:45:00AM +0000, riz@NetBSD.org wrote:
> With an MP kernel on a domU (I've seen it on both amd64 and i386 PAE),
> terminal output (such as a build.sh) will sometimes disconnect with
> the following message:
>
> Corrupted MAC on input.
> Disconnecting: Packet corrupt
>
> I haven't seen this on anything but MP xen (that I'm aware of).
I have some problems with MP domUs, but not this one. What is your dom0 ?
--
Manuel Bouyer <bouyer@antioche.eu.org>
NetBSD: 26 ans d'experience feront toujours la difference
--
From: Jeff Rizzo <riz@NetBSD.org>
To: gnats-bugs@NetBSD.org
Cc:
Subject: Re: port-xen/45956: Network packet corruption on MP kernel
Date: Thu, 09 Feb 2012 07:01:17 -0800
On 2/9/12 6:35 AM, Manuel Bouyer wrote:
> >
> > I haven't seen this on anything but MP xen (that I'm aware of).
>
> I have some problems with MP domUs, but not this one. What is your dom0 ?
>
I've seen it on 3 different dom0s; two are running xen 4.1.2, the third
(and the one I've seen it on most recently) is Amazon EC2, which I
believe is based on xen 3.1.
From: Manuel Bouyer <bouyer@antioche.eu.org>
To: gnats-bugs@NetBSD.org
Cc: port-xen-maintainer@NetBSD.org, gnats-admin@NetBSD.org,
netbsd-bugs@NetBSD.org, riz@NetBSD.org
Subject: Re: port-xen/45956: Network packet corruption on MP kernel
Date: Fri, 10 Feb 2012 16:40:04 +0100
On Thu, Feb 09, 2012 at 03:05:03PM +0000, Jeff Rizzo wrote:
> I've seen it on 3 different dom0s; two are running xen 4.1.2, the third
> (and the one I've seen it on most recently) is Amazon EC2, which I
> believe is based on xen 3.1.
What OS is are the xen 4.1.2 dom0 running ?
--
Manuel Bouyer <bouyer@antioche.eu.org>
NetBSD: 26 ans d'experience feront toujours la difference
--
From: Jeff Rizzo <riz@netbsd.org>
To: Manuel Bouyer <bouyer@antioche.eu.org>
Cc: gnats-bugs@NetBSD.org
Subject: Re: port-xen/45956: Network packet corruption on MP kernel
Date: Fri, 10 Feb 2012 08:24:19 -0800
On 2/10/12 7:40 AM, Manuel Bouyer wrote:
> What OS is are the xen 4.1.2 dom0 running ?
>
NetBSD - 5.99.59, possibly 5.99.64 (not sure if i've seen it since I
upgraded one of them.)
+j
From: Manuel Bouyer <bouyer@antioche.eu.org>
To: Jeff Rizzo <riz@netbsd.org>
Cc: gnats-bugs@netbsd.org
Subject: Re: port-xen/45956: Network packet corruption on MP kernel
Date: Fri, 10 Feb 2012 17:27:13 +0100
On Fri, Feb 10, 2012 at 08:24:19AM -0800, Jeff Rizzo wrote:
> On 2/10/12 7:40 AM, Manuel Bouyer wrote:
> >What OS is are the xen 4.1.2 dom0 running ?
> >
>
> NetBSD - 5.99.59, possibly 5.99.64 (not sure if i've seen it since I
> upgraded one of them.)
OK, and, just to make sure, you're not running a MULTIPROCESSOR in
the dom0, right ? It's not supported at this time, and the backends
are not SMP-safe.
--
Manuel Bouyer <bouyer@antioche.eu.org>
NetBSD: 26 ans d'experience feront toujours la difference
--
From: Jeff Rizzo <riz@netbsd.org>
To: Manuel Bouyer <bouyer@antioche.eu.org>
Cc: gnats-bugs@netbsd.org
Subject: Re: port-xen/45956: Network packet corruption on MP kernel
Date: Fri, 10 Feb 2012 08:34:03 -0800
On 2/10/12 8:27 AM, Manuel Bouyer wrote:
> OK, and, just to make sure, you're not running a MULTIPROCESSOR in
> the dom0, right ? It's not supported at this time, and the backends
> are not SMP-safe.
>
no, UP only.
State-Changed-From-To: open->feedback
State-Changed-By: bouyer@NetBSD.org
State-Changed-When: Sat, 25 Feb 2012 12:24:10 +0000
State-Changed-Why:
Have you been able to reproduce this with reent kernels ?
If not, OK to close the PR ?
From: "Cherry G. Mathew" <cherry.g.mathew@gmail.com>
To: gnats-bugs@netbsd.org
Cc: port-xen-maintainer@netbsd.org, gnats-admin@netbsd.org,
netbsd-bugs@netbsd.org, riz@netbsd.org
Subject: Re: port-xen/45956: Network packet corruption on MP kernel
Date: Sun, 11 Mar 2012 11:59:46 +0900
On 11 February 2012 01:35, Jeff Rizzo <riz@netbsd.org> wrote:
> The following reply was made to PR port-xen/45956; it has been noted by G=
NATS.
>
> From: Jeff Rizzo <riz@netbsd.org>
> To: Manuel Bouyer <bouyer@antioche.eu.org>
> Cc: gnats-bugs@netbsd.org
> Subject: Re: port-xen/45956: Network packet corruption on MP kernel
> Date: Fri, 10 Feb 2012 08:34:03 -0800
>
> =A0On 2/10/12 8:27 AM, Manuel Bouyer wrote:
> =A0> OK, and, just to make sure, you're not running a MULTIPROCESSOR in
> =A0> the dom0, right ? It's not supported at this time, and the backends
> =A0> are not SMP-safe.
> =A0>
> =A0no, UP only.
>
Is this still reproduceable (on -current or 6.0) ?
--=20
~Cherry
State-Changed-From-To: feedback->closed
State-Changed-By: dholland@NetBSD.org
State-Changed-When: Sat, 20 May 2017 19:18:54 +0000
State-Changed-Why:
No feedback since 2012; also this problem matches 51753 fairly closely
and if so it's fixed.
>Unformatted:
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