linux-kernel - [amir73il:fsnotify-volatile 5/5] include/linux/compiler_types.h:346:45: error: call to '__compiletime_assert_271' declared with attribute error: BUILD_BUG_ON failed: HWEIGHT32(FANOTIFY_INIT

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Date:   Thu, 3 Mar 2022 11:12:13 +0800
From:   kernel test robot <lkp@...el.com>
To:     Amir Goldstein <amir73il@...il.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [amir73il:fsnotify-volatile 5/5]
 include/linux/compiler_types.h:346:45: error: call to
 '__compiletime_assert_271' declared with attribute error: BUILD_BUG_ON
 failed: HWEIGHT32(FANOTIFY_INIT_FLAGS) != 13

tree:   https://github.com/amir73il/linux fsnotify-volatile
head:   bc58808cbec71bead5572997dafe604c50f2b4af
commit: bc58808cbec71bead5572997dafe604c50f2b4af [5/5] fanotify: FAN_MARK_VOLATILE - WIP
config: m68k-sun3x_defconfig (https://download.01.org/0day-ci/archive/20220303/202203030951.3eFFn4A5-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/amir73il/linux/commit/bc58808cbec71bead5572997dafe604c50f2b4af
        git remote add amir73il https://github.com/amir73il/linux
        git fetch --no-tags amir73il fsnotify-volatile
        git checkout bc58808cbec71bead5572997dafe604c50f2b4af
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=m68k SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   In file included from <command-line>:
   fs/notify/fanotify/fanotify_user.c: In function 'fanotify_user_setup':
>> include/linux/compiler_types.h:346:45: error: call to '__compiletime_assert_271' declared with attribute error: BUILD_BUG_ON failed: HWEIGHT32(FANOTIFY_INIT_FLAGS) != 13
     346 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:327:25: note: in definition of macro '__compiletime_assert'
     327 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:346:9: note: in expansion of macro '_compiletime_assert'
     346 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
      39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:50:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      50 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^~~~~~~~~~~~~~~~
   fs/notify/fanotify/fanotify_user.c:1756:9: note: in expansion of macro 'BUILD_BUG_ON'
    1756 |         BUILD_BUG_ON(HWEIGHT32(FANOTIFY_INIT_FLAGS) != 13);
         |         ^~~~~~~~~~~~


vim +/__compiletime_assert_271 +346 include/linux/compiler_types.h

eb5c2d4b45e3d2d Will Deacon 2020-07-21  332  
eb5c2d4b45e3d2d Will Deacon 2020-07-21  333  #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2d Will Deacon 2020-07-21  334  	__compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2d Will Deacon 2020-07-21  335  
eb5c2d4b45e3d2d Will Deacon 2020-07-21  336  /**
eb5c2d4b45e3d2d Will Deacon 2020-07-21  337   * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2d Will Deacon 2020-07-21  338   * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2d Will Deacon 2020-07-21  339   * @msg:       a message to emit if condition is false
eb5c2d4b45e3d2d Will Deacon 2020-07-21  340   *
eb5c2d4b45e3d2d Will Deacon 2020-07-21  341   * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2d Will Deacon 2020-07-21  342   * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2d Will Deacon 2020-07-21  343   * compiler has support to do so.
eb5c2d4b45e3d2d Will Deacon 2020-07-21  344   */
eb5c2d4b45e3d2d Will Deacon 2020-07-21  345  #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2d Will Deacon 2020-07-21 @346  	_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2d Will Deacon 2020-07-21  347  

:::::: The code at line 346 was first introduced by commit
:::::: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h

:::::: TO: Will Deacon <will@...nel.org>
:::::: CC: Will Deacon <will@...nel.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org