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Date:   Mon, 8 Jul 2019 13:39:58 +1000
From:   Stephen Rothwell <sfr@canb.auug.org.au>
To:     Pablo Neira Ayuso <pablo@netfilter.org>,
        NetFilter <netfilter-devel@vger.kernel.org>,
        Masahiro Yamada <yamada.masahiro@socionext.com>
Cc:     Linux Next Mailing List <linux-next@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        wenxu <wenxu@ucloud.cn>
Subject: linux-next: build failure after merge of the netfilter-next tree
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Hi all,

After merging the netfilter-next tree, today's linux-next build (x86_64
allmodconfig) failed like this:

In file included from <command-line>:
include/net/netfilter/nft_meta.h:6:21: warning: 'key' is narrower than valu=
es of its type
  enum nft_meta_keys key:8;
                     ^~~
include/net/netfilter/nft_meta.h:6:21: error: field 'key' has incomplete ty=
pe
include/net/netfilter/nft_meta.h:8:22: warning: 'dreg' is narrower than val=
ues of its type
   enum nft_registers dreg:8;
                      ^~~~
include/net/netfilter/nft_meta.h:8:22: error: field 'dreg' has incomplete t=
ype
include/net/netfilter/nft_meta.h:9:22: warning: 'sreg' is narrower than val=
ues of its type
   enum nft_registers sreg:8;
                      ^~~~
include/net/netfilter/nft_meta.h:9:22: error: field 'sreg' has incomplete t=
ype
include/net/netfilter/nft_meta.h:13:32: error: array type has incomplete el=
ement type 'struct nla_policy'
 extern const struct nla_policy nft_meta_policy[];
                                ^~~~~~~~~~~~~~~
include/net/netfilter/nft_meta.h:17:22: warning: 'struct nlattr' declared i=
nside parameter list will not be visible outside of this definition or decl=
aration
         const struct nlattr * const tb[]);
                      ^~~~~~
include/net/netfilter/nft_meta.h:16:22: warning: 'struct nft_expr' declared=
 inside parameter list will not be visible outside of this definition or de=
claration
         const struct nft_expr *expr,
                      ^~~~~~~~
include/net/netfilter/nft_meta.h:15:36: warning: 'struct nft_ctx' declared =
inside parameter list will not be visible outside of this definition or dec=
laration
 int nft_meta_get_init(const struct nft_ctx *ctx,
                                    ^~~~~~~
include/net/netfilter/nft_meta.h:21:22: warning: 'struct nlattr' declared i=
nside parameter list will not be visible outside of this definition or decl=
aration
         const struct nlattr * const tb[]);
                      ^~~~~~
include/net/netfilter/nft_meta.h:20:22: warning: 'struct nft_expr' declared=
 inside parameter list will not be visible outside of this definition or de=
claration
         const struct nft_expr *expr,
                      ^~~~~~~~
include/net/netfilter/nft_meta.h:19:36: warning: 'struct nft_ctx' declared =
inside parameter list will not be visible outside of this definition or dec=
laration
 int nft_meta_set_init(const struct nft_ctx *ctx,
                                    ^~~~~~~
include/net/netfilter/nft_meta.h:24:22: warning: 'struct nft_expr' declared=
 inside parameter list will not be visible outside of this definition or de=
claration
         const struct nft_expr *expr);
                      ^~~~~~~~
include/net/netfilter/nft_meta.h:23:30: warning: 'struct sk_buff' declared =
inside parameter list will not be visible outside of this definition or dec=
laration
 int nft_meta_get_dump(struct sk_buff *skb,
                              ^~~~~~~
include/net/netfilter/nft_meta.h:27:22: warning: 'struct nft_expr' declared=
 inside parameter list will not be visible outside of this definition or de=
claration
         const struct nft_expr *expr);
                      ^~~~~~~~
include/net/netfilter/nft_meta.h:26:30: warning: 'struct sk_buff' declared =
inside parameter list will not be visible outside of this definition or dec=
laration
 int nft_meta_set_dump(struct sk_buff *skb,
                              ^~~~~~~
include/net/netfilter/nft_meta.h:31:23: warning: 'struct nft_pktinfo' decla=
red inside parameter list will not be visible outside of this definition or=
 declaration
          const struct nft_pktinfo *pkt);
                       ^~~~~~~~~~~
include/net/netfilter/nft_meta.h:30:17: warning: 'struct nft_regs' declared=
 inside parameter list will not be visible outside of this definition or de=
claration
          struct nft_regs *regs,
                 ^~~~~~~~
include/net/netfilter/nft_meta.h:29:37: warning: 'struct nft_expr' declared=
 inside parameter list will not be visible outside of this definition or de=
claration
 void nft_meta_get_eval(const struct nft_expr *expr,
                                     ^~~~~~~~
include/net/netfilter/nft_meta.h:35:23: warning: 'struct nft_pktinfo' decla=
red inside parameter list will not be visible outside of this definition or=
 declaration
          const struct nft_pktinfo *pkt);
                       ^~~~~~~~~~~
include/net/netfilter/nft_meta.h:34:17: warning: 'struct nft_regs' declared=
 inside parameter list will not be visible outside of this definition or de=
claration
          struct nft_regs *regs,
                 ^~~~~~~~
include/net/netfilter/nft_meta.h:33:37: warning: 'struct nft_expr' declared=
 inside parameter list will not be visible outside of this definition or de=
claration
 void nft_meta_set_eval(const struct nft_expr *expr,
                                     ^~~~~~~~
include/net/netfilter/nft_meta.h:38:19: warning: 'struct nft_expr' declared=
 inside parameter list will not be visible outside of this definition or de=
claration
      const struct nft_expr *expr);
                   ^~~~~~~~
include/net/netfilter/nft_meta.h:37:40: warning: 'struct nft_ctx' declared =
inside parameter list will not be visible outside of this definition or dec=
laration
 void nft_meta_set_destroy(const struct nft_ctx *ctx,
                                        ^~~~~~~
include/net/netfilter/nft_meta.h:42:19: warning: 'struct nft_data' declared=
 inside parameter list will not be visible outside of this definition or de=
claration
      const struct nft_data **data);
                   ^~~~~~~~
include/net/netfilter/nft_meta.h:41:19: warning: 'struct nft_expr' declared=
 inside parameter list will not be visible outside of this definition or de=
claration
      const struct nft_expr *expr,
                   ^~~~~~~~
include/net/netfilter/nft_meta.h:40:40: warning: 'struct nft_ctx' declared =
inside parameter list will not be visible outside of this definition or dec=
laration
 int nft_meta_set_validate(const struct nft_ctx *ctx,
                                        ^~~~~~~

Caused by commit

  30e103fe24de ("netfilter: nft_meta: move bridge meta keys into nft_meta_b=
ridge")

interacting with commit

  3a768d9f7ae5 ("kbuild: compile-test kernel headers to ensure they are sel=
f-contained")

from the kbuild tree.

I have applied the following patch for today.

From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Mon, 8 Jul 2019 13:34:42 +1000
Subject: [PATCH] don't test build another netfilter header

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
 include/Kbuild | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/Kbuild b/include/Kbuild
index 78434c59701f..cfd73c94d015 100644
--- a/include/Kbuild
+++ b/include/Kbuild
@@ -900,6 +900,7 @@ header-test-			+=3D net/netfilter/nf_tables_core.h
 header-test-			+=3D net/netfilter/nf_tables_ipv4.h
 header-test-			+=3D net/netfilter/nf_tables_ipv6.h
 header-test-			+=3D net/netfilter/nft_fib.h
+header-test-			+=3D net/netfilter/nft_meta.h
 header-test-			+=3D net/netfilter/nft_reject.h
 header-test-			+=3D net/netns/can.h
 header-test-			+=3D net/netns/generic.h
--=20
2.20.1

--=20
Cheers,
Stephen Rothwell

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