From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jakub Kicinski <jakub.kicinski@netronome.com>
Subject: Re: [PATCH v3 net-next 0/2] bpfilter
Date: Wed, 23 May 2018 18:33:52 -0700
Message-ID: <20180523183352.7ccc3f5d@cakuba>
References: <20180522022230.2492505-1-ast@kernel.org>
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Cc: "David S . Miller" <davem@davemloft.net>, <daniel@iogearbox.net>,
        <torvalds@linux-foundation.org>, <gregkh@linuxfoundation.org>,
        <luto@amacapital.net>, <mcgrof@kernel.org>,
        <keescook@chromium.org>, <netdev@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <kernel-team@fb.com>
To: Alexei Starovoitov <ast@kernel.org>
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <20180522022230.2492505-1-ast@kernel.org>
Sender: linux-kernel-owner@vger.kernel.org
List-Id: netdev.vger.kernel.org

Minor glitch with Ubuntu 18.04:

$ gcc --version
gcc (Ubuntu 7.3.0-16ubuntu3) 7.3.0

In file included from /usr/include/fcntl.h:290:0,
                 from ../net/bpfilter/main.c:7:
In function =E2=80=98open=E2=80=99,
    inlined from =E2=80=98main=E2=80=99 at ../net/bpfilter/main.c:58:13:
/usr/include/x86_64-linux-gnu/bits/fcntl2.h:50:4: error: call to =E2=80=98_=
_open_missing_mode=E2=80=99 declared with attribute error: open with O_CREA=
T or O_TMPFILE in second argument needs 3 arguments
    __open_missing_mode ();
    ^~~~~~~~~~~~~~~~~~~~~~
scripts/Makefile.host:107: recipe for target 'net/bpfilter/main.o' failed
make[3]: *** [net/bpfilter/main.o] Error 1

I can't repro on Fedora 27 gcc (GCC) 7.3.1 20180303 (Red Hat 7.3.1-5),
perhaps the GCC is broken on that Ubuntu 18.04 box of mine.  The warning/
/error, however, looks potentially legit?