netdev - Re: [PATCH bpf-next v2 1/8] tcp, ulp: enforce sock_owned_by

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Date:   Tue, 16 Oct 2018 16:29:52 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Eric Dumazet <eric.dumazet@...il.com>, alexei.starovoitov@...il.com
Cc:     john.fastabend@...il.com, davejwatson@...com,
        netdev@...r.kernel.org
Subject: Re: [PATCH bpf-next v2 1/8] tcp, ulp: enforce sock_owned_by_me upon
 ulp init and cleanup

On 10/16/2018 04:17 PM, Eric Dumazet wrote:
> On 10/12/2018 05:45 PM, Daniel Borkmann wrote:
[...]
>> diff --git a/net/ipv4/tcp_ulp.c b/net/ipv4/tcp_ulp.c
>> index a5995bb..34e9635 100644
>> --- a/net/ipv4/tcp_ulp.c
>> +++ b/net/ipv4/tcp_ulp.c
>> @@ -123,6 +123,8 @@ void tcp_cleanup_ulp(struct sock *sk)
>>  {
>>  	struct inet_connection_sock *icsk = inet_csk(sk);
>>  
>> +	sock_owned_by_me(sk);
>> +
>>  	if (!icsk->icsk_ulp_ops)
>>  		return;
> 
> Ahem... inet_csk_prepare_forced_close() releases the socket lock,
> and tcp_done(newsk); is called after inet_csk_prepare_forced_close() 

Right you are, will fix it up. Thanks!