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Subject: Re: tcp: Checking a kmemdup() call in tcp_time_wait()
To:     Eric Dumazet <edumazet@google.com>,
        netdev <netdev@vger.kernel.org>, kernel-janitors@vger.kernel.org
Cc:     Eric Dumazet <eric.dumazet@gmail.com>,
        Alexei Starovoitov <ast@kernel.org>,
        Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
        Daniel Borkmann <daniel@iogearbox.net>,
        "David S. Miller" <davem@davemloft.net>,
        Hideaki Yoshifuji <yoshfuji@linux-ipv6.org>,
        Martin KaFai Lau <kafai@fb.com>,
        Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>,
        Aditya Pakki <pakki001@umn.edu>, Kangjie Lu <kjlu@umn.edu>,
        Navid Emamdoost <emamd001@umn.edu>,
        Stephen McCamant <smccaman@umn.edu>,
        LKML <linux-kernel@vger.kernel.org>
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From:   Markus Elfring <Markus.Elfring@web.de>
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Date:   Mon, 14 Oct 2019 19:19:27 +0200
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> This is coding style for newly submitted code.
>
> We do not refactor code to the latest coding style, this would cost a lo=
t.

Were any update candidates left over also in this function implementation?


>> How do you think about to return an error code like =E2=80=9C-ENOMEM=E2=
=80=9D at this place?
>
> tcp_time_wait() is void,

Can the function return type be eventually changed?


> the caller won't care.

Will any other software developers (and source code reviewers) start to
care more for unchecked function calls?


> I told you time_wait is best effort.

Can this approach still be improved another bit?


> What is the problem you want to solve _exactly_ ?

I became curious if the software situation can be adjusted around
a possibly ignored return value from a call of a function like kmemdup().

Regards,
Markus