This shall be old problem between e1000 and kexec. 

Please refer to:

http://oss.sgi.com/archives/netdev/2005-02/msg00576.html

On 7/14/05, Chad Tindel <[EMAIL PROTECTED]> wrote:
> Hello-
> 
> We seem to be experiencing some problems using the e1000 driver with a
> kexec fast reboot.  The problem is that when we are rebooting, as soon
> as the driver starts initializing the kernel panics.  In the stock
> kernel, this happens as soon as e1000_configure_rx() is called.  This
> problem also happens with the 6.0.60 version as well.
> 
> Initial thoughts are something to do with the DMA settings still being
> in the card, but are of course invalid once the new kernel has taken
> control.  So, once e1000_configure_rx() is called, the card tries to
> receive a packet, but the driver hasn't called
> e1000_alloc_rx_buffers(), so it is writing to invalid memory.
> 
> Thoughts?
> 
> Thanks,
> 
> Chad
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