netdev - printk mac address --hangs

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Date:	Thu, 13 May 2010 10:46:28 +0530
From:	ratheesh k <ratheesh.ksz@...il.com>
To:	netdev@...r.kernel.org
Subject: printk mac address --hangs

/* code snippent */
 char src[ETH_ALEN+2];
 char dst[ETH_ALEN+2];

 eth_header = eth_hdr(skb);
 memcpy(src , eth_header->h_source , ETH_ALEN );
 memcpy(dst , eth_header->h_dest , ETH_ALEN );


Linux crashes . But if comment out memcpy lines  . It works . What is
the problem here ?
How can i printk both source mac and dest mac address  ?

Thanks,
Ratheesh
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