Re: [PATCH] net: Fix potential NULL pointer dereference in __skb_try_recv_datagram

[David Miller]

From: Rainer Weikusat <rweikusat@xxxxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 29 Dec 2015 19:42:36 +0000

> Jacob Siverskog <jacob@xxxxxxxxxxxxxxxxxxx> writes:
>> This should fix a NULL pointer dereference I encountered (dump
>> below). Since __skb_unlink is called while walking,
>> skb_queue_walk_safe should be used.
> 
> The code in question is:
 ...
> __skb_unlink is only called prior to returning from the function.
> Consequently, it won't affect the skb_queue_walk code.

Agreed, this patch doesn't fix anything.
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