Changli Gao wrote:
> On Thu, Apr 15, 2010 at 10:46 PM, Patrick McHardy <kaber@xxxxxxxxx> wrote:
>> Patrick McHardy wrote:
>>> That should be easily fixable. For the lookup we can add a reference
>>> counter so we don't need the rcu read side critical section.
>> Actually we don't even need that, since we're holding nfnl_mutex the
>> instance can't go away.
>>
>
> I don't think so. a netlink queue instance maybe destroyed by
> nfqnl_rcv_nl_event(). And the function is called by netlink directly
> without nfnl_mutex.
No its not:
static void nfnetlink_rcv(struct sk_buff *skb)
{
nfnl_lock();
netlink_rcv_skb(skb, &nfnetlink_rcv_msg);
nfnl_unlock();
}
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