port-xen/45956: Network packet corruption on MP kernel

[riz%NetBSD.org@localhost]

>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:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Feb 09 04:45:00 +0000 2012
>Originator:     Jeff Rizzo <riz%NetBSD.org@localhost>
>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.

>Unformatted: