linux-kernel - Re: linux-next: build failure after merge of the bpf-next tree

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Message-ID: <YmE0geKVcfQtsBmz@boxer>
Date:   Thu, 21 Apr 2022 12:40:01 +0200
From:   Maciej Fijalkowski <maciej.fijalkowski@...el.com>
To:     Daniel Borkmann <daniel@...earbox.net>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Alexei Starovoitov <ast@...nel.org>,
        Andrii Nakryiko <andrii@...nel.org>, bpf <bpf@...r.kernel.org>,
        Networking <netdev@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the bpf-next tree

On Thu, Apr 21, 2022 at 11:45:46AM +0200, Daniel Borkmann wrote:
> On 4/21/22 2:32 AM, Stephen Rothwell wrote:
> > Hi all,
> 
> Maciej, I presume you are already working on a follow-up for the below?

Yikes! I missed that, let's blame easter break for that.
I'm on it.

> 
> > On Tue, 19 Apr 2022 11:56:20 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> > > 
> > > After merging the bpf-next tree, today's linux-next build
> > > (x86_64 allmodconfig) failed like this:
> > > 
> > > In file included from include/linux/compiler_types.h:73,
> > >                   from <command-line>:
> > > drivers/net/ethernet/intel/i40e/i40e_xsk.c: In function 'i40e_run_xdp_zc':
> > > include/linux/compiler_attributes.h:222:41: error: attribute 'fallthrough' not preceding a case label or default label [-Werror]
> > >    222 | # define fallthrough                    __attribute__((__fallthrough__))
> > >        |                                         ^~~~~~~~~~~~~
> > > drivers/net/ethernet/intel/i40e/i40e_xsk.c:192:17: note: in expansion of macro 'fallthrough'
> > >    192 |                 fallthrough; /* handle aborts by dropping packet */
> > >        |                 ^~~~~~~~~~~
> > > cc1: all warnings being treated as errors
> > > In file included from include/linux/compiler_types.h:73,
> > >                   from <command-line>:
> > > drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c: In function 'ixgbe_run_xdp_zc':
> > > include/linux/compiler_attributes.h:222:41: error: attribute 'fallthrough' not preceding a case label or default label [-Werror]
> > >    222 | # define fallthrough                    __attribute__((__fallthrough__))
> > >        |                                         ^~~~~~~~~~~~~
> > > drivers/net/ethernet/intel/ixgbe/ixgbe_xsk.c:147:17: note: in expansion of macro 'fallthrough'
> > >    147 |                 fallthrough; /* handle aborts by dropping packet */
> > >        |                 ^~~~~~~~~~~
> > > cc1: all warnings being treated as errors
> > > 
> > > Caused by commits
> > > 
> > >    b8aef650e549 ("i40e, xsk: Terminate Rx side of NAPI when XSK Rx queue gets full")
> > >    c7dd09fd4628 ("ixgbe, xsk: Terminate Rx side of NAPI when XSK Rx queue gets full")
> > > 
> > > I have used the bpf-next tree from next-20220414 for today.
> > 
> > I am still getting these failures ...
> > 
>