From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] NET: fix kernel panic from no dev->hard_header_len
 space
Date: Mon, 31 Jul 2006 13:24:34 -0700 (PDT)
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From: Krzysztof Halasa <khc@pm.waw.pl>
Date: Mon, 31 Jul 2006 22:04:33 +0200

> This is non-trivial because hard_header and hard_start_xmit
> functions currently can't return new skb address (hard_header()
> can't use skb_realloc_headroom() at all, xmit() can't use it if
> there is a need to requeue the packet).
> 
> Or can you just realloc the data portion of skb without changing skb
> struct address? The skb may be referenced by other things.

Krzysztof, which device driver exactly creates this problem
in the first place?