netdev - Re: [PATCH net-next 5/6] net/bpf_jit: SPARC: split VLAN_PRESENT bit handling from VLAN

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Date:   Wed, 4 Jan 2017 20:59:08 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Michał Mirosław <mirq-linux@...e.qmqm.pl>
Cc:     kbuild-all@...org, netdev@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>, sparclinux@...r.kernel.org
Subject: Re: [PATCH net-next 5/6] net/bpf_jit: SPARC: split VLAN_PRESENT bit
 handling from VLAN_TCI

Hi Michał,

[auto build test ERROR on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Micha-Miros-aw/Prepare-BPF-for-VLAN_TAG_PRESENT-cleanup/20170104-190258
config: sparc64-allmodconfig (attached as .config)
compiler: sparc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=sparc64 

All error/warnings (new ones prefixed by >>):

   In file included from include/linux/compiler.h:58:0,
                    from include/uapi/linux/stddef.h:1,
                    from include/linux/stddef.h:4,
                    from include/uapi/linux/posix_types.h:4,
                    from include/uapi/linux/types.h:13,
                    from include/linux/types.h:5,
                    from include/linux/list.h:4,
                    from include/linux/module.h:9,
                    from include/linux/moduleloader.h:5,
                    from arch/sparc/net/bpf_jit_comp.c:1:
   arch/sparc/net/bpf_jit_comp.c: In function 'bpf_jit_compile':
>> include/linux/compiler-gcc.h:159:2: error: 'struct sk_buff' has no member named '__pkt_vlan_present_offset'; did you mean '__pkt_type_offset'?
     __builtin_offsetof(a, b)
     ^
   include/linux/stddef.h:16:32: note: in expansion of macro '__compiler_offsetof'
    #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER)
                                   ^~~~~~~~~~~~~~~~~~~
>> arch/sparc/net/bpf_jit_comp.c:228:26: note: in expansion of macro 'offsetof'
    do { unsigned int _off = offsetof(STRUCT, FIELD);   \
                             ^~~~~~~~
>> arch/sparc/net/bpf_jit_comp.c:270:2: note: in expansion of macro '__emit_load8'
     __emit_load8(r_SKB, struct sk_buff, FIELD, DEST)
     ^~~~~~~~~~~~
>> arch/sparc/net/bpf_jit_comp.c:611:5: note: in expansion of macro '__emit_skb_load8'
        __emit_skb_load8(__pkt_vlan_present_offset, r_A);
        ^~~~~~~~~~~~~~~~

vim +159 include/linux/compiler-gcc.h

cb984d10 Joe Perches    2015-06-25  153  #  error Your version of gcc miscompiles the __weak directive
cb984d10 Joe Perches    2015-06-25  154  # endif
cb984d10 Joe Perches    2015-06-25  155  #endif
cb984d10 Joe Perches    2015-06-25  156  
cb984d10 Joe Perches    2015-06-25  157  #define __used			__attribute__((__used__))
cb984d10 Joe Perches    2015-06-25  158  #define __compiler_offsetof(a, b)					\
cb984d10 Joe Perches    2015-06-25 @159  	__builtin_offsetof(a, b)
cb984d10 Joe Perches    2015-06-25  160  
0d025d27 Josh Poimboeuf 2016-08-30  161  #if GCC_VERSION >= 40100
cb984d10 Joe Perches    2015-06-25  162  # define __compiletime_object_size(obj) __builtin_object_size(obj, 0)

:::::: The code at line 159 was first introduced by commit
:::::: cb984d101b30eb7478d32df56a0023e4603cba7f compiler-gcc: integrate the various compiler-gcc[345].h files

:::::: TO: Joe Perches <joe@...ches.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>

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