linux-next: build failure in Linus' tree

linux-next: build failure in Linus' tree

[Stephen Rothwell]

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Hi all,

While compiling Linus' tree, a powerpc-allmodconfig build (and others)
with gcc 4.9 failed like this:

drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c: In function 'ifh_encode_bitfield':
include/linux/compiler_types.h:328:38: error: call to '__compiletime_assert_431' declared with attribute error: Unsupported width, must be <= 40
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
                                      ^
include/linux/compiler_types.h:309:4: note: in definition of macro '__compiletime_assert'
    prefix ## suffix();    \
    ^
include/linux/compiler_types.h:328:2: note: in expansion of macro '_compiletime_assert'
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
  ^
drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c:28:2: note: in expansion of macro 'compiletime_assert'
  compiletime_assert(width <= 40, "Unsupported width, must be <= 40");
  ^

Caused by commit

  f3cad2611a77 ("net: sparx5: add hostmode with phylink support")

I guess this is caused by the call to ifh_encode_bitfield() not being
inlined.



-- 
Cheers,
Stephen Rothwell

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Re: linux-next: build failure in Linus' tree

[Stephen Rothwell]

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Hi all,

On Thu, 15 Jul 2021 09:50:32 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>
> While compiling Linus' tree, a powerpc-allmodconfig build (and others)
> with gcc 4.9 failed like this:
> 
> drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c: In function 'ifh_encode_bitfield':
> include/linux/compiler_types.h:328:38: error: call to '__compiletime_assert_431' declared with attribute error: Unsupported width, must be <= 40
>   _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
>                                       ^
> include/linux/compiler_types.h:309:4: note: in definition of macro '__compiletime_assert'
>     prefix ## suffix();    \
>     ^
> include/linux/compiler_types.h:328:2: note: in expansion of macro '_compiletime_assert'
>   _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
>   ^
> drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c:28:2: note: in expansion of macro 'compiletime_assert'
>   compiletime_assert(width <= 40, "Unsupported width, must be <= 40");
>   ^
> 
> Caused by commit
> 
>   f3cad2611a77 ("net: sparx5: add hostmode with phylink support")
> 
> I guess this is caused by the call to ifh_encode_bitfield() not being
> inlined.

I am still getting these failures.

-- 
Cheers,
Stephen Rothwell

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Re: linux-next: build failure in Linus' tree

[Jakub Kicinski]

On Tue, 20 Jul 2021 16:45:31 +1000, Stephen Rothwell wrote:
> Hi all,
> 
> On Thu, 15 Jul 2021 09:50:32 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
> >
> > While compiling Linus' tree, a powerpc-allmodconfig build (and others)
> > with gcc 4.9 failed like this:
> > 
> > drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c: In function 'ifh_encode_bitfield':
> > include/linux/compiler_types.h:328:38: error: call to '__compiletime_assert_431' declared with attribute error: Unsupported width, must be <= 40
> >   _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
> >                                       ^
> > include/linux/compiler_types.h:309:4: note: in definition of macro '__compiletime_assert'
> >     prefix ## suffix();    \
> >     ^
> > include/linux/compiler_types.h:328:2: note: in expansion of macro '_compiletime_assert'
> >   _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
> >   ^
> > drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c:28:2: note: in expansion of macro 'compiletime_assert'
> >   compiletime_assert(width <= 40, "Unsupported width, must be <= 40");
> >   ^
> > 
> > Caused by commit
> > 
> >   f3cad2611a77 ("net: sparx5: add hostmode with phylink support")
> > 
> > I guess this is caused by the call to ifh_encode_bitfield() not being
> > inlined.  
> 
> I am still getting these failures.

Bjarni, Steen, could you address this build failure ASAP?

We can't have a compile time asserts in static functions, if the code
is optimized for size chances are the function won't get inlined. clang
is pretty bad at propagating constants to compile time asserts, too.
Please remove this check, or refactor it to be done in a macro, or ..

Re: linux-next: build failure in Linus' tree

[Stephen Rothwell]

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Hi all,

On Tue, 20 Jul 2021 14:11:01 +0200 Jakub Kicinski <kuba@kernel.org> wrote:
>
> On Tue, 20 Jul 2021 16:45:31 +1000, Stephen Rothwell wrote:
> > 
> > On Thu, 15 Jul 2021 09:50:32 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:  
> > >
> > > While compiling Linus' tree, a powerpc-allmodconfig build (and others)
> > > with gcc 4.9 failed like this:
> > > 
> > > drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c: In function 'ifh_encode_bitfield':
> > > include/linux/compiler_types.h:328:38: error: call to '__compiletime_assert_431' declared with attribute error: Unsupported width, must be <= 40
> > >   _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
> > >                                       ^
> > > include/linux/compiler_types.h:309:4: note: in definition of macro '__compiletime_assert'
> > >     prefix ## suffix();    \
> > >     ^
> > > include/linux/compiler_types.h:328:2: note: in expansion of macro '_compiletime_assert'
> > >   _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
> > >   ^
> > > drivers/net/ethernet/microchip/sparx5/sparx5_netdev.c:28:2: note: in expansion of macro 'compiletime_assert'
> > >   compiletime_assert(width <= 40, "Unsupported width, must be <= 40");
> > >   ^
> > > 
> > > Caused by commit
> > > 
> > >   f3cad2611a77 ("net: sparx5: add hostmode with phylink support")
> > > 
> > > I guess this is caused by the call to ifh_encode_bitfield() not being
> > > inlined.    
> > 
> > I am still getting these failures.  
> 
> Bjarni, Steen, could you address this build failure ASAP?
> 
> We can't have a compile time asserts in static functions, if the code
> is optimized for size chances are the function won't get inlined. clang
> is pretty bad at propagating constants to compile time asserts, too.
> Please remove this check, or refactor it to be done in a macro, or ..

I am still getting these failures.

-- 
Cheers,
Stephen Rothwell

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linux-next: build failure in Linus' tree

[Stephen Rothwell]

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Hi all,

Building Linus' tree, today's linux-next build (powerpc allyesconfig)
failed like this:

ld: net/bpfilter/bpfilter_umh.o: compiled for a little endian system and target is big endian
ld: failed to merge target specific data of file net/bpfilter/bpfilter_umh.o

This has come to light since I started using a native compiler (i.e. one
that can build executables, not just the kernel) for my PowerPC builds
on a powerpcle host.

I have switched back to my limited compiler.

-- 
Cheers,
Stephen Rothwell

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Re: linux-next: build failure in Linus' tree

[Stephen Rothwell]

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Hi all,

On Tue, 12 Jun 2018 12:26:40 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>
> Building Linus' tree, today's linux-next build (powerpc allyesconfig)
> failed like this:
> 
> ld: net/bpfilter/bpfilter_umh.o: compiled for a little endian system and target is big endian
> ld: failed to merge target specific data of file net/bpfilter/bpfilter_umh.o
> 
> This has come to light since I started using a native compiler (i.e. one
> that can build executables, not just the kernel) for my PowerPC builds
> on a powerpcle host.
> 
> I have switched back to my limited compiler.

Any progress on this?
-- 
Cheers,
Stephen Rothwell

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linux-next: build failure in Linus' tree

[Stephen Rothwell]

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Hi Linus,

With Linus' tree, today's linux-next build (powerpc allyesconfig)
failed like this:

net/bridge/netfilter/nft_reject_bridge.c: In function 'nft_reject_br_send_v6_unreach':
net/bridge/netfilter/nft_reject_bridge.c:240:3: error: implicit declaration of function 'csum_ipv6_magic' [-Werror=implicit-function-declaration]
   csum_ipv6_magic(&nip6h->saddr, &nip6h->daddr,
   ^

Caused by commit 523b929d5446 ("netfilter: nft_reject_bridge: don't use
IP stack to reject traffic") from Linus' tree.

I applied the following patch for today:

From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Mon, 3 Nov 2014 15:01:16 +1100
Subject: [PATCH] netfilter: nft_reject_bridge: include ip6_checksum.h for csum_ipv6_magic

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
 net/bridge/netfilter/nft_reject_bridge.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/bridge/netfilter/nft_reject_bridge.c b/net/bridge/netfilter/nft_reject_bridge.c
index 654c9018e3e7..1123f2b4a1b1 100644
--- a/net/bridge/netfilter/nft_reject_bridge.c
+++ b/net/bridge/netfilter/nft_reject_bridge.c
@@ -16,6 +16,7 @@
 #include <net/netfilter/nft_reject.h>
 #include <net/netfilter/ipv4/nf_reject.h>
 #include <net/netfilter/ipv6/nf_reject.h>
+#include <net/ip6_checksum.h>
 #include <linux/ip.h>
 #include <net/ip.h>
 #include <linux/netfilter_bridge.h>
-- 
2.1.1

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au

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Re: linux-next: build failure in Linus' tree

[David Miller]

From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Mon, 3 Nov 2014 15:09:30 +1100

> Hi Linus,
> 
> With Linus' tree, today's linux-next build (powerpc allyesconfig)
> failed like this:
> 
> net/bridge/netfilter/nft_reject_bridge.c: In function 'nft_reject_br_send_v6_unreach':
> net/bridge/netfilter/nft_reject_bridge.c:240:3: error: implicit declaration of function 'csum_ipv6_magic' [-Werror=implicit-function-declaration]
>    csum_ipv6_magic(&nip6h->saddr, &nip6h->daddr,
>    ^
> 
> Caused by commit 523b929d5446 ("netfilter: nft_reject_bridge: don't use
> IP stack to reject traffic") from Linus' tree.
> 
> I applied the following patch for today:

Yep, another person hit this today and submitted a patch too:

http://patchwork.ozlabs.org/patch/406003/

I'll get this into the net tree ASAP.