netdev - Re: [Patch net] ipv6: fix rtnl lock assertion failure in ipv6_sock_ac

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Message-ID: <CAHA+R7MFz10YGTR8hD=N0s9FBD5N=p+Qu3_F0GJO0Tv-4STu+A@mail.gmail.com>
Date:	Tue, 2 Sep 2014 16:29:14 -0700
From:	Cong Wang <cwang@...pensource.com>
To:	Hannes Frederic Sowa <hannes@...essinduktion.org>
Cc:	Cong Wang <xiyou.wangcong@...il.com>,
	netdev <netdev@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Sabrina Dubroca <sd@...asysnail.net>
Subject: Re: [Patch net] ipv6: fix rtnl lock assertion failure in ipv6_sock_ac_join()

On Tue, Sep 2, 2014 at 2:29 PM, Hannes Frederic Sowa
<hannes@...essinduktion.org> wrote:
> Hi Cong,
>
> On Di, 2014-09-02 at 11:07 -0700, Cong Wang wrote:
>> @@ -198,7 +198,7 @@ void ipv6_sock_ac_close(struct sock *sk)
>>       spin_unlock_bh(&ipv6_sk_ac_lock);
>>
>>       prev_index = 0;
>> -     rcu_read_lock();
>> +     rtnl_lock();
>>       while (pac) {
>>               struct ipv6_ac_socklist *next = pac->acl_next;
>>
>> @@ -211,7 +211,7 @@ void ipv6_sock_ac_close(struct sock *sk)
>>               sock_kfree_s(sk, pac, sizeof(*pac));
>>               pac = next;
>>       }
>> -     rcu_read_unlock();
>> +     rtnl_unlock();
>>  }
>>
>
> Nit:
> You forgot to convert a dev_get_by_index_rcu to __dev_get_by_index in
> ipv6_sock_ac_close.
>

Good catch! Will update this patch together with "Fixes:" tag.

Thanks.
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