Re: [linux-safety] [PATCH] ipv6: remove useless assignment to newinet in tcp_v6_syn_recv_sock()

On Thu, Nov 04, 2021 at 07:50:18AM +0100, Lukas Bulwahn wrote:
> On Thu, Nov 4, 2021 at 12:28 AM Nghia Le <[email protected]> wrote:
> >
> > The newinet value is initialized with inet_sk() in a block code starting
> > from checking condition of protocol to exiting by returning newsk
> > structure. Along the code path, newinet is never read. Thus, assignment
> > to newinet is wredundant and can be removed.
> >
> 
> Just a bit improving your English:
> 
> s/in a block code starting from checking condition of protocol to
> exiting by returning newsk structure/in a block code to handle sockets
> for the ETH_P_IP protocol/
> 
> s/Along the code path/Along this code path/
> 
> s/wredundant/redundant/
> 
> I would prefer "needless" or "useless" to "redundant", but all words are okay.
> 
> Lukas
> 
> > Signed-off-by: Nghia Le <[email protected]>
> > ---
> >  net/ipv6/tcp_ipv6.c | 1 -
> >  1 file changed, 1 deletion(-)
> >
> > diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
> > index 2cc9b0e53ad1..551fce49841d 100644
> > --- a/net/ipv6/tcp_ipv6.c
> > +++ b/net/ipv6/tcp_ipv6.c
> > @@ -1263,7 +1263,6 @@ static struct sock *tcp_v6_syn_recv_sock(const struct sock *sk, struct sk_buff *
> >
> >                 inet_sk(newsk)->pinet6 = tcp_inet6_sk(newsk);
> >
> > -               newinet = inet_sk(newsk);
> >                 newnp = tcp_inet6_sk(newsk);
> >                 newtp = tcp_sk(newsk);
> >
> > --
> > 2.25.1
> >
Thanks Lukas, I revised and submitted patch to public mailing list.
Best regards,
Nghia Le


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