Re: 2.6.17-rc5-mm2 problem ?

[Andrew Morton]

On Mon, 05 Jun 2006 09:37:40 -0700
Badari Pulavarty <pbadari@xxxxxxxxxx> wrote:

> Have you seen this on 2.6.17-rc5-mm2 before ? Could be due to my
> patchset (fileop cleanups), but doesn't seem like it ..
> 
> Thanks,
> Badari
> 
> Unable to handle kernel NULL pointer dereference at 0000000000000008
> RIP:
>  [<ffffffff80448d5f>] skb_dequeue+0x2c/0x50

It could be the LLC bug.  That thing caused untold amounts of grief.

--- devel/net/llc/llc_input.c~git-net-llc-fix	2006-06-02 11:55:38.000000000 -0700
+++ devel-akpm/net/llc/llc_input.c	2006-06-02 11:55:38.000000000 -0700
@@ -176,7 +176,6 @@ int llc_rcv(struct sk_buff *skb, struct 
  		struct sk_buff *cskb = skb_clone(skb, GFP_ATOMIC);
  		if (cskb)
  			rcv(cskb, dev, pt, orig_dev);
-		rcv(skb, dev, pt, orig_dev);
 	}
 	dest = llc_pdu_type(skb);
 	if (unlikely(!dest || !llc_type_handlers[dest - 1]))
_

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