netdev - Re: [PATCH] ipv6: Fix possible NULL dereference in icmp6_dst

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Message-Id: <20100127.021424.263649631.davem@davemloft.net>
Date:	Wed, 27 Jan 2010 02:14:24 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	jarkao2@...il.com
Cc:	shemminger@...tta.com, djohnson@...rentnetworks.com,
	sakkiped@...rentnetworks.com, netdev@...r.kernel.org
Subject: Re: [PATCH] ipv6: Fix possible NULL dereference in icmp6_dst_alloc

From: Jarek Poplawski <jarkao2@...il.com>
Date: Wed, 27 Jan 2010 09:59:52 +0000

> While looking at the "Deadlock in IPv6 code while garbage collection
> on the rwlock protecting the routing tree" reported by Srinivas
> Akkipeddi I found there is possible a NULL pointer dereference in
> icmp6_dst_alloc().
> 
> Signed-off-by: Jarek Poplawski <jarkao2@...il.com>

Jarek, if rt is NULL so is &rt->u.dst

That's two patches trying to fix this same non-problem in
two different places today :-)
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