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Date: Tue, 09 Dec 2014 09:40:26 -0800
From: Peter Grehan <grehan@freebsd.org>
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To: Shawn Webb <lattera@gmail.com>
Subject: Re: Bug in virtio-net
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Hi Shawn,

>> ​I doubt this has anything to do with vtnet. My guess is that
>> netisr_proto[NETISR_ETHER].np_handler(m) is ​NULL for some reason. Do
>> you have a dump?
>
> core.txt is attached. I've also uploaded it to the link below in case
> the attachment is scrubbed.
>
> http://0xfeedface.org/~shawn/2014-12-08_2028_core.txt

  Is the core dump available ?

  As Bryan mentioned, this is a NULL function pointer deref and not a 
data access so is possibly related to corruption of data structures 
rather than a bug in the virtio driver. The core dump would be able to 
point to what went wrong.

later,

Peter.