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Subject: Re: tcp: Checking a kmemdup() call in tcp_time_wait()
To:     Eric Dumazet <eric.dumazet@gmail.com>, netdev@vger.kernel.org,
        Alexei Starovoitov <ast@kernel.org>,
        Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>,
        Daniel Borkmann <daniel@iogearbox.net>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Hideaki Yoshifuji <yoshfuji@linux-ipv6.org>,
        Martin KaFai Lau <kafai@fb.com>,
        Song Liu <songliubraving@fb.com>, Yonghong Song <yhs@fb.com>,
        kernel-janitors@vger.kernel.org
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Aditya Pakki <pakki001@umn.edu>, Kangjie Lu <kjlu@umn.edu>,
        Navid Emamdoost <emamd001@umn.edu>,
        Stephen McCamant <smccaman@umn.edu>
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From:   Markus Elfring <Markus.Elfring@web.de>
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Date:   Mon, 14 Oct 2019 14:50:48 +0200
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>>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tr=
ee/net/ipv4/tcp_minisocks.c?id=3D1c0cc5f1ae5ee5a6913704c0d75a6e99604ee30a#=
n306
>>>> https://elixir.bootlin.com/linux/v5.4-rc2/source/net/ipv4/tcp_minisoc=
ks.c#L306
=E2=80=A6

>> Can an other error reporting approach be nicer here?
>
> There is no error reported if kmemdup() has failed.

How do data from the Linux allocation failure report fit to this informati=
on?
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Do=
cumentation/process/coding-style.rst?id=3D4f5cafb5cb8471e54afdc9054d973535=
614f7675#n878


> timewait is best effort.

How do you think about to return an error code like =E2=80=9C-ENOMEM=E2=80=
=9D at this place?

Regards,
Markus