linux-kernel - Re: [PATCH] bpf/test_run: Add braces to initialization in bpf_prog_test_run

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Date:   Fri, 19 Oct 2018 12:03:00 -0700
From:   Nathan Chancellor <natechancellor@...il.com>
To:     Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Eric Dumazet <eric.dumazet@...il.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Network Development <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] bpf/test_run: Add braces to initialization in
 bpf_prog_test_run_skb

On Fri, Oct 19, 2018 at 11:47:34AM -0700, Alexei Starovoitov wrote:
> On Fri, Oct 19, 2018 at 11:46 AM Eric Dumazet <eric.dumazet@...il.com> wrote:
> >
> >
> >
> > On 10/19/2018 11:26 AM, Nathan Chancellor wrote:
> > > Clang warns:
> > >
> > > net/bpf/test_run.c:120:20: error: suggest braces around initialization
> > > of subobject [-Werror,-Wmissing-braces]
> > >         struct sock sk = {0};
> > >                           ^
> > >                           {}
> > >
> > > Add the braces to properly initialize all subobjects.
> > >
> > > Fixes: 75079847e9d0 ("bpf: add tests for direct packet access from CGROUP_SKB")
> > > Signed-off-by: Nathan Chancellor <natechancellor@...il.com>
> > > ---
> > >  net/bpf/test_run.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c
> > > index 8dccac305268..65e049c61a7a 100644
> > > --- a/net/bpf/test_run.c
> > > +++ b/net/bpf/test_run.c
> > > @@ -117,7 +117,7 @@ int bpf_prog_test_run_skb(struct bpf_prog *prog, const union bpf_attr *kattr,
> > >       u32 retval, duration;
> > >       int hh_len = ETH_HLEN;
> > >       struct sk_buff *skb;
> > > -     struct sock sk = {0};
> > > +     struct sock sk = { { {0} } };
> > >       void *data;
> > >       int ret;
> > >
> > >
> >
> > Strange, I thought this patch was still under discussion.
> > Has an old version of it being merged somewhere ?

Looks like it made its way into -next in the 20181019 version, which
is what I am working off of.

> 
> merged and reverted. This patch is not necessary.

Thank you for the heads up and sorry for the noise!
Nathan