[akpm-mm:mm-unstable 124/135] include/linux/compiler_types.h:706:45: error: call to '__compiletime_assert_350' declared with attribute error: BUILD_BUG_ON failed: SECTION_MAP_LAST_BIT > min(PFN_SECTION_SHIFT + __ffs(sizeof(struct page)), PAGE_SHIFT)

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable
head:   d873dd7a326a5b9f970008d4b59ae2c9e4e9b12b
commit: 28208ad9dae4d1eccc9280bc3193b4091afd6a1a [124/135] mm/sparse: fix BUILD_BUG_ON check for section map alignment
config: sh-allnoconfig (https://download.01.org/0day-ci/archive/20260401/202604011400.OFLcOOmf-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260401/202604011400.OFLcOOmf-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604011400.OFLcOOmf-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from <command-line>:
   In function 'sparse_init_one_section',
       inlined from 'sparse_init_early_section' at mm/sparse.c:323:2:
>> include/linux/compiler_types.h:706:45: error: call to '__compiletime_assert_350' declared with attribute error: BUILD_BUG_ON failed: SECTION_MAP_LAST_BIT > min(PFN_SECTION_SHIFT + __ffs(sizeof(struct page)), PAGE_SHIFT)
     706 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:687:25: note: in definition of macro '__compiletime_assert'
     687 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:706:9: note: in expansion of macro '_compiletime_assert'
     706 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:40:37: note: in expansion of macro 'compiletime_assert'
      40 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
         |                                     ^~~~~~~~~~~~~~~~~~
   include/linux/build_bug.h:51:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
      51 |         BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
         |         ^~~~~~~~~~~~~~~~
   mm/internal.h:975:9: note: in expansion of macro 'BUILD_BUG_ON'
     975 |         BUILD_BUG_ON(SECTION_MAP_LAST_BIT > min(PFN_SECTION_SHIFT + __ffs(sizeof(struct page)),
         |         ^~~~~~~~~~~~


vim +/__compiletime_assert_350 +706 include/linux/compiler_types.h

eb5c2d4b45e3d2d Will Deacon 2020-07-21  692  
eb5c2d4b45e3d2d Will Deacon 2020-07-21  693  #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2d Will Deacon 2020-07-21  694  	__compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2d Will Deacon 2020-07-21  695  
eb5c2d4b45e3d2d Will Deacon 2020-07-21  696  /**
eb5c2d4b45e3d2d Will Deacon 2020-07-21  697   * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2d Will Deacon 2020-07-21  698   * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2d Will Deacon 2020-07-21  699   * @msg:       a message to emit if condition is false
eb5c2d4b45e3d2d Will Deacon 2020-07-21  700   *
eb5c2d4b45e3d2d Will Deacon 2020-07-21  701   * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2d Will Deacon 2020-07-21  702   * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2d Will Deacon 2020-07-21  703   * compiler has support to do so.
eb5c2d4b45e3d2d Will Deacon 2020-07-21  704   */
eb5c2d4b45e3d2d Will Deacon 2020-07-21  705  #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2d Will Deacon 2020-07-21 @706  	_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2d Will Deacon 2020-07-21  707  

:::::: The code at line 706 was first introduced by commit
:::::: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h

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

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