netdev - Re: [BUG][2.6.21] af_key: kernel BUG at net/core/skbuff.c:93

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Message-Id: <20070226.152115.25475996.davem@davemloft.net>
Date:	Mon, 26 Feb 2007 15:21:15 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	kronos.it@...il.com
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [BUG][2.6.21] af_key: kernel BUG at net/core/skbuff.c:93

From: Luca Tettamanti <kronos.it@...il.com>
Date: Mon, 26 Feb 2007 23:08:41 +0100

> skb_over_panic: text:f1b8a065 len:16 put:16 head:b1a3ba00 data:b1a3ba00 tail:b1a
> 3ba00 end:b1a3ba90 dev:<NULL>

This panic message doesn't make any sense, it should not have
triggered.  skb_put() calls skb_over_panic() when:

	if (unlikely(skb->tail>skb->end))
		skb_over_panic(skb, len, current_text_addr());

but from the panic message it says:

tail:b1a3ba00
end:b1a3ba90

tail is certainly not greater than end.
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