lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Message-ID: <202310011601.XXYEwt2d-lkp@intel.com>
Date:   Sun, 1 Oct 2023 16:53:06 +0800
From:   kernel test robot <lkp@...el.com>
To:     WANG Xuerui <git@...0n.name>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Huacai Chen <chenhuacai@...nel.org>
Subject: include/linux/build_bug.h:16:51: error: bit-field '<anonymous>'
 width not an integer constant

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   e402b08634b398e9feb94902c7adcf05bb8ba47d
commit: 3f301dc292eb122eff61b8b2906e519154b0327f LoongArch: Replace -ffreestanding with finer-grained -fno-builtin's
date:   5 weeks ago
config: loongarch-loongson3_defconfig (https://download.01.org/0day-ci/archive/20231001/202310011601.XXYEwt2d-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 12.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231001/202310011601.XXYEwt2d-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310011601.XXYEwt2d-lkp@intel.com/

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

   In file included from include/linux/percpu.h:13,
                    from include/linux/context_tracking_state.h:5,
                    from include/linux/hardirq.h:5,
                    from include/linux/interrupt.h:11,
                    from sound/pci/bt87x.c:11:
   arch/loongarch/include/asm/percpu.h:20:4: error: #error compiler support for the model attribute is necessary when a recent assembler is used
      20 | #  error compiler support for the model attribute is necessary when a recent assembler is used
         |    ^~~~~
   In file included from include/linux/init.h:5,
                    from sound/pci/bt87x.c:10:
>> include/linux/build_bug.h:16:51: error: bit-field '<anonymous>' width not an integer constant
      16 | #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); })))
         |                                                   ^
   include/linux/compiler.h:231:33: note: in expansion of macro 'BUILD_BUG_ON_ZERO'
     231 | #define __must_be_array(a)      BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
         |                                 ^~~~~~~~~~~~~~~~~
   include/linux/kernel.h:56:59: note: in expansion of macro '__must_be_array'
      56 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
         |                                                           ^~~~~~~~~~~~~~~
   include/linux/moduleparam.h:517:20: note: in expansion of macro 'ARRAY_SIZE'
     517 |         = { .max = ARRAY_SIZE(array), .num = nump,                      \
         |                    ^~~~~~~~~~
   include/linux/moduleparam.h:501:9: note: in expansion of macro 'module_param_array_named'
     501 |         module_param_array_named(name, name, type, nump, perm)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~
   sound/pci/bt87x.c:33:1: note: in expansion of macro 'module_param_array'
      33 | module_param_array(index, int, NULL, 0444);
         | ^~~~~~~~~~~~~~~~~~
>> sound/pci/bt87x.c:27:12: warning: 'index' defined but not used [-Wunused-variable]
      27 | static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
         |            ^~~~~
--
   In file included from include/linux/irqflags.h:18,
                    from include/linux/spinlock.h:59,
                    from include/linux/mmzone.h:8,
                    from include/linux/gfp.h:7,
                    from include/linux/slab.h:16,
                    from sound/usb/card.c:26:
   arch/loongarch/include/asm/percpu.h:20:4: error: #error compiler support for the model attribute is necessary when a recent assembler is used
      20 | #  error compiler support for the model attribute is necessary when a recent assembler is used
         |    ^~~~~
   In file included from include/linux/bits.h:21,
                    from include/linux/bitops.h:6,
                    from sound/usb/card.c:23:
>> include/linux/build_bug.h:16:51: error: bit-field '<anonymous>' width not an integer constant
      16 | #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); })))
         |                                                   ^
   include/linux/compiler.h:231:33: note: in expansion of macro 'BUILD_BUG_ON_ZERO'
     231 | #define __must_be_array(a)      BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
         |                                 ^~~~~~~~~~~~~~~~~
   include/linux/kernel.h:56:59: note: in expansion of macro '__must_be_array'
      56 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
         |                                                           ^~~~~~~~~~~~~~~
   include/linux/moduleparam.h:517:20: note: in expansion of macro 'ARRAY_SIZE'
     517 |         = { .max = ARRAY_SIZE(array), .num = nump,                      \
         |                    ^~~~~~~~~~
   include/linux/moduleparam.h:501:9: note: in expansion of macro 'module_param_array_named'
     501 |         module_param_array_named(name, name, type, nump, perm)
         |         ^~~~~~~~~~~~~~~~~~~~~~~~
   sound/usb/card.c:81:1: note: in expansion of macro 'module_param_array'
      81 | module_param_array(index, int, NULL, 0444);
         | ^~~~~~~~~~~~~~~~~~
>> sound/usb/card.c:63:12: warning: 'index' defined but not used [-Wunused-variable]
      63 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
         |            ^~~~~


vim +16 include/linux/build_bug.h

bc6245e5efd70c Ian Abbott       2017-07-10   6  
bc6245e5efd70c Ian Abbott       2017-07-10   7  #ifdef __CHECKER__
bc6245e5efd70c Ian Abbott       2017-07-10   8  #define BUILD_BUG_ON_ZERO(e) (0)
bc6245e5efd70c Ian Abbott       2017-07-10   9  #else /* __CHECKER__ */
bc6245e5efd70c Ian Abbott       2017-07-10  10  /*
bc6245e5efd70c Ian Abbott       2017-07-10  11   * Force a compilation error if condition is true, but also produce a
8788994376d84d Rikard Falkeborn 2019-12-04  12   * result (of value 0 and type int), so the expression can be used
bc6245e5efd70c Ian Abbott       2017-07-10  13   * e.g. in a structure initializer (or where-ever else comma expressions
bc6245e5efd70c Ian Abbott       2017-07-10  14   * aren't permitted).
bc6245e5efd70c Ian Abbott       2017-07-10  15   */
8788994376d84d Rikard Falkeborn 2019-12-04 @16  #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); })))
527edbc18a70e7 Masahiro Yamada  2019-01-03  17  #endif /* __CHECKER__ */
527edbc18a70e7 Masahiro Yamada  2019-01-03  18  

:::::: The code at line 16 was first introduced by commit
:::::: 8788994376d84d627450fd0d67deb6a66ddf07d7 linux/build_bug.h: change type to int

:::::: TO: Rikard Falkeborn <rikard.falkeborn@...il.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ