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Date: Thu, 11 Apr 2024 11:38:35 +1000
From: Stephen Rothwell <sfr@canb.auug.org.au>
To: Eric Dumazet <edumazet@google.com>, David Miller <davem@davemloft.net>,
 Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: Networking <netdev@vger.kernel.org>, Linux Kernel Mailing List
 <linux-kernel@vger.kernel.org>, Linux Next Mailing List
 <linux-next@vger.kernel.org>
Subject: Re: linux-next: build failure after merge of the net-next tree
Message-ID: <20240411113835.713ccf11@canb.auug.org.au>
In-Reply-To: <CANn89iJyXNKycL1kd_KP8NH-qU7siv8BGW5PGLexjmqaXXGciA@mail.gmail.com>
References: <20240409114028.76ede66a@canb.auug.org.au>
	<CANn89iJyXNKycL1kd_KP8NH-qU7siv8BGW5PGLexjmqaXXGciA@mail.gmail.com>
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Hi all,

On Tue, 9 Apr 2024 07:10:40 +0200 Eric Dumazet <edumazet@google.com> wrote:
>
> On Tue, Apr 9, 2024 at 3:40=E2=80=AFAM Stephen Rothwell <sfr@canb.auug.or=
g.au> wrote:
> >
> > After merging the net-next tree, today's linux-next build (arm
> > multi_v7_defconfig) failed like this:
> >
> > In file included from <command-line>:
> > In function 'tcp_struct_check',
> >     inlined from 'tcp_init' at net/ipv4/tcp.c:4703:2:
> > include/linux/compiler_types.h:460:45: error: call to '__compiletime_as=
sert_940' declared with attribute error: BUILD_BUG_ON failed: offsetof(stru=
ct tcp_sock, __cacheline_group_end__tcp_sock_write_txrx) - offsetofend(stru=
ct tcp_sock, __cacheline_group_begin__tcp_sock_write_txrx) > 92
> >   460 |         _compiletime_assert(condition, msg, __compiletime_asser=
t_, __COUNTER__)
> >       |                                             ^
> > include/linux/compiler_types.h:441:25: note: in definition of macro '__=
compiletime_assert'
> >   441 |                         prefix ## suffix();                    =
         \
> >       |                         ^~~~~~
> > include/linux/compiler_types.h:460:9: note: in expansion of macro '_com=
piletime_assert'
> >   460 |         _compiletime_assert(condition, msg, __compiletime_asser=
t_, __COUNTER__)
> >       |         ^~~~~~~~~~~~~~~~~~~
> > include/linux/build_bug.h:39:37: note: in expansion of macro 'compileti=
me_assert'
> >    39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond),=
 msg)
> >       |                                     ^~~~~~~~~~~~~~~~~~
> > include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_=
ON_MSG'
> >    50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #co=
ndition)
> >       |         ^~~~~~~~~~~~~~~~
> > include/linux/cache.h:108:9: note: in expansion of macro 'BUILD_BUG_ON'
> >   108 |         BUILD_BUG_ON(offsetof(TYPE, __cacheline_group_end__##GR=
OUP) - \
> >       |         ^~~~~~~~~~~~
> > net/ipv4/tcp.c:4673:9: note: in expansion of macro 'CACHELINE_ASSERT_GR=
OUP_SIZE'
> >  4673 |         CACHELINE_ASSERT_GROUP_SIZE(struct tcp_sock, tcp_sock_w=
rite_txrx, 92);
> >       |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
> > Presumably caused by commit
> >
> >   d2c3a7eb1afa ("tcp: more struct tcp_sock adjustments")
> >
> > I have reverted that commit for today. =20
>=20
> Yeah, a build bot gave us a warning yesterday, I will fix this today.

I am still getting this build failure.
--=20
Cheers,
Stephen Rothwell

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