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

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Date: Thu, 11 Apr 2024 11:38:35 +1000
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Eric Dumazet <edumazet@...gle.com>, David Miller <davem@...emloft.net>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc: 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 net-next tree

Hi all,

On Tue, 9 Apr 2024 07:10:40 +0200 Eric Dumazet <edumazet@...gle.com> wrote:
>
> On Tue, Apr 9, 2024 at 3:40 AM Stephen Rothwell <sfr@...b.auug.org.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_assert_940' declared with attribute error: BUILD_BUG_ON failed: offsetof(struct tcp_sock, __cacheline_group_end__tcp_sock_write_txrx) - offsetofend(struct tcp_sock, __cacheline_group_begin__tcp_sock_write_txrx) > 92
> >   460 |         _compiletime_assert(condition, msg, __compiletime_assert_, __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 '_compiletime_assert'
> >   460 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
> >       |         ^~~~~~~~~~~~~~~~~~~
> > include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_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: " #condition)
> >       |         ^~~~~~~~~~~~~~~~
> > include/linux/cache.h:108:9: note: in expansion of macro 'BUILD_BUG_ON'
> >   108 |         BUILD_BUG_ON(offsetof(TYPE, __cacheline_group_end__##GROUP) - \
> >       |         ^~~~~~~~~~~~
> > net/ipv4/tcp.c:4673:9: note: in expansion of macro 'CACHELINE_ASSERT_GROUP_SIZE'
> >  4673 |         CACHELINE_ASSERT_GROUP_SIZE(struct tcp_sock, tcp_sock_write_txrx, 92);
> >       |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
> > Presumably caused by commit
> >
> >   d2c3a7eb1afa ("tcp: more struct tcp_sock adjustments")
> >
> > I have reverted that commit for today.  
> 
> Yeah, a build bot gave us a warning yesterday, I will fix this today.

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

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