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Message-ID: <201808260654.SbcrPl7w%fengguang.wu@intel.com>
Date:   Sun, 26 Aug 2018 06:44:58 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Jakub Kicinski <jakub.kicinski@...ronome.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Daniel Borkmann <daniel@...earbox.net>,
        Quentin Monnet <quentin.monnet@...ronome.com>
Subject: include/linux/compiler.h:339:38: error: call to
 '__compiletime_assert_1650' declared with attribute error: BUILD_BUG_ON
 failed: plen_reg(nfp_prog) != reg_b(STATIC_REG_PKT_LEN)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b326272010b6656210193d7ab93fa184087e8ee1
commit: 0c26159352ba1cdc5a8c8d74131cc19cdfdf9371 nfp: bpf: xdp_adjust_tail support
date:   3 weeks ago
config: i386-randconfig-b0-08260429 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
        git checkout 0c26159352ba1cdc5a8c8d74131cc19cdfdf9371
        # save the attached .config to linux build tree
        make ARCH=i386 

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

   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:shr_imm64
   Cyclomatic Complexity 4 drivers/net/ethernet/netronome/nfp/bpf/jit.c:__shl_imm64
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:shl_imm64
   Cyclomatic Complexity 2 drivers/net/ethernet/netronome/nfp/bpf/jit.c:shl_imm
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_outro_tc_da
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_outro_xdp
   Cyclomatic Complexity 4 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_outro
   Cyclomatic Complexity 50 drivers/net/ethernet/netronome/nfp/bpf/jit.c:__emit_br_bit
   Cyclomatic Complexity 9 drivers/net/ethernet/netronome/nfp/bpf/jit.c:emit_br_bit_relo
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:emit_br_bset
   Cyclomatic Complexity 6 drivers/net/ethernet/netronome/nfp/bpf/jit.c:ashr_reg64
   Cyclomatic Complexity 6 drivers/net/ethernet/netronome/nfp/bpf/jit.c:shr_reg64
   Cyclomatic Complexity 6 drivers/net/ethernet/netronome/nfp/bpf/jit.c:shl_reg64
   Cyclomatic Complexity 7 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_jmp_code_get
   Cyclomatic Complexity 3 drivers/net/ethernet/netronome/nfp/bpf/jit.c:cmp_reg
   Cyclomatic Complexity 6 drivers/net/ethernet/netronome/nfp/bpf/jit.c:cmp_imm
   Cyclomatic Complexity 23 drivers/net/ethernet/netronome/nfp/bpf/../nfp_asm.h:__enc_swreg_lm
   Cyclomatic Complexity 6 drivers/net/ethernet/netronome/nfp/bpf/jit.c:adjust_head
   Cyclomatic Complexity 22 drivers/net/ethernet/netronome/nfp/bpf/jit.c:wrp_lmem_store
   Cyclomatic Complexity 5 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_ldx_xdp
   Cyclomatic Complexity 7 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_ldx_skb
   Cyclomatic Complexity 20 drivers/net/ethernet/netronome/nfp/bpf/jit.c:wrp_lmem_load
   Cyclomatic Complexity 2 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_queue_select
   Cyclomatic Complexity 3 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_stx_xdp
   Cyclomatic Complexity 5 drivers/net/ethernet/netronome/nfp/bpf/jit.c:data_ld
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:construct_data_ind_ld
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:data_ind_ld1
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:data_ind_ld2
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:data_ind_ld4
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_intro
   Cyclomatic Complexity 4 drivers/net/ethernet/netronome/nfp/bpf/jit.c:adjust_tail
   Cyclomatic Complexity 9 drivers/net/ethernet/netronome/nfp/bpf/jit.c:wrp_immed_relo
   Cyclomatic Complexity 2 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_perf_event_output
   Cyclomatic Complexity 43 drivers/net/ethernet/netronome/nfp/bpf/jit.c:__emit_lcsr
   Cyclomatic Complexity 3 drivers/net/ethernet/netronome/nfp/bpf/jit.c:emit_csr_wr
   Cyclomatic Complexity 7 drivers/net/ethernet/netronome/nfp/bpf/jit.c:map_call_stack_common
   Cyclomatic Complexity 11 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_op_stack
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_stx_stack
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_ldx_stack
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:__emit_csr_rd
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_get_prandom_u32
   Cyclomatic Complexity 9 drivers/net/ethernet/netronome/nfp/bpf/jit.c:call
   Cyclomatic Complexity 9 drivers/net/ethernet/netronome/nfp/bpf/jit.c:re_load_imm_any
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_stx_data
   Cyclomatic Complexity 3 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_stx
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_stx8
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_stx1
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_stx2
   Cyclomatic Complexity 3 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_stx4
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_st_data
   Cyclomatic Complexity 2 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_st
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_st8
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_st1
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_st2
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_st4
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_ldx_data
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_ldx_emem
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:construct_data_ld
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:data_ld1
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:data_ld2
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:data_ld4
   Cyclomatic Complexity 47 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_cpp_memcpy
   Cyclomatic Complexity 9 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_ldx_data_init_pktcache
   Cyclomatic Complexity 9 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_ldx
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_ldx8
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_ldx1
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_ldx2
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mem_ldx4
   Cyclomatic Complexity 64 drivers/net/ethernet/netronome/nfp/bpf/jit.c:__emit_mul
   Cyclomatic Complexity 4 drivers/net/ethernet/netronome/nfp/bpf/jit.c:emit_mul
   Cyclomatic Complexity 2 drivers/net/ethernet/netronome/nfp/bpf/jit.c:wrp_mul_u32
   Cyclomatic Complexity 8 drivers/net/ethernet/netronome/nfp/bpf/jit.c:wrp_div_imm
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:div_reg64
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:div_reg
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:div_imm64
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:div_imm
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:wrp_mul_u16
   Cyclomatic Complexity 3 drivers/net/ethernet/netronome/nfp/bpf/jit.c:wrp_mul
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mul_reg64
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mul_reg
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mul_imm64
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:mul_imm
   Cyclomatic Complexity 3 drivers/net/ethernet/netronome/nfp/bpf/jit.c:imm_ld8_part2
   Cyclomatic Complexity 20 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_fixup_branches
   Cyclomatic Complexity 15 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_translate
   Cyclomatic Complexity 1 include/linux/mm.h:kvmalloc
   Cyclomatic Complexity 7 include/linux/mm.h:kvmalloc_array
   Cyclomatic Complexity 2 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_bpf_prog_trim
   Cyclomatic Complexity 3 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_bpf_ustore_calc
   Cyclomatic Complexity 4 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_bpf_jit
   Cyclomatic Complexity 7 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_bpf_jit_prepare
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_bpf_supported_opcode
   Cyclomatic Complexity 20 drivers/net/ethernet/netronome/nfp/bpf/jit.c:nfp_bpf_relo_for_vnic
   Cyclomatic Complexity 1 drivers/net/ethernet/netronome/nfp/bpf/jit.c:_GLOBAL__sub_I_65535_0_nfp_bpf_jit
   In file included from include/asm-generic/bug.h:5:0,
                    from arch/x86/include/asm/bug.h:83,
                    from include/linux/bug.h:5,
                    from drivers/net/ethernet/netronome/nfp/bpf/jit.c:36:
   In function 'adjust_tail.isra.11',
       inlined from 'call' at drivers/net/ethernet/netronome/nfp/bpf/jit.c:3090:3:
>> include/linux/compiler.h:339:38: error: call to '__compiletime_assert_1650' declared with attribute error: BUILD_BUG_ON failed: plen_reg(nfp_prog) != reg_b(STATIC_REG_PKT_LEN)
     _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
                                         ^
   include/linux/compiler.h:319:4: note: in definition of macro '__compiletime_assert'
       prefix ## suffix();    \
       ^
   include/linux/compiler.h:339:2: note: in expansion of macro '_compiletime_assert'
     _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
     ^
   include/linux/build_bug.h:45:37: note: in expansion of macro 'compiletime_assert'
    #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                        ^
   include/linux/build_bug.h:69:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
     BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
     ^
>> drivers/net/ethernet/netronome/nfp/bpf/jit.c:1650:2: note: in expansion of macro 'BUILD_BUG_ON'
     BUILD_BUG_ON(plen_reg(nfp_prog) != reg_b(STATIC_REG_PKT_LEN));
     ^

vim +/__compiletime_assert_1650 +339 include/linux/compiler.h

9a8ab1c3 Daniel Santos 2013-02-21  325  
9a8ab1c3 Daniel Santos 2013-02-21  326  #define _compiletime_assert(condition, msg, prefix, suffix) \
9a8ab1c3 Daniel Santos 2013-02-21  327  	__compiletime_assert(condition, msg, prefix, suffix)
9a8ab1c3 Daniel Santos 2013-02-21  328  
9a8ab1c3 Daniel Santos 2013-02-21  329  /**
9a8ab1c3 Daniel Santos 2013-02-21  330   * compiletime_assert - break build and emit msg if condition is false
9a8ab1c3 Daniel Santos 2013-02-21  331   * @condition: a compile-time constant condition to check
9a8ab1c3 Daniel Santos 2013-02-21  332   * @msg:       a message to emit if condition is false
9a8ab1c3 Daniel Santos 2013-02-21  333   *
9a8ab1c3 Daniel Santos 2013-02-21  334   * In tradition of POSIX assert, this macro will break the build if the
9a8ab1c3 Daniel Santos 2013-02-21  335   * supplied condition is *false*, emitting the supplied error message if the
9a8ab1c3 Daniel Santos 2013-02-21  336   * compiler has support to do so.
9a8ab1c3 Daniel Santos 2013-02-21  337   */
9a8ab1c3 Daniel Santos 2013-02-21  338  #define compiletime_assert(condition, msg) \
9a8ab1c3 Daniel Santos 2013-02-21 @339  	_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
9a8ab1c3 Daniel Santos 2013-02-21  340  

:::::: The code at line 339 was first introduced by commit
:::::: 9a8ab1c39970a4938a72d94e6fd13be88a797590 bug.h, compiler.h: introduce compiletime_assert & BUILD_BUG_ON_MSG

:::::: TO: Daniel Santos <daniel.santos@...ox.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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