[sean-jc:x86/svm_handler_nospec 5/5] include/linux/compiler_types.h:597:45: error: call to '__compiletime_assert_1122' declared with attribute error: BUILD_BUG_ON failed: sizeof(_i) > sizeof(long)

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

tree:   https://github.com/sean-jc/linux x86/svm_handler_nospec
head:   bac6bf1a9360d8301e58c5ea06be70c71a665b75
commit: bac6bf1a9360d8301e58c5ea06be70c71a665b75 [5/5] KVM: SVM: Harden exit_code against being used in Spectre-like attacks
config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20251105/202511052041.SuRW3wII-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251105/202511052041.SuRW3wII-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/202511052041.SuRW3wII-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from <command-line>:
   arch/x86/kvm/svm/svm.c: In function 'svm_invoke_exit_handler':
>> include/linux/compiler_types.h:597:45: error: call to '__compiletime_assert_1122' declared with attribute error: BUILD_BUG_ON failed: sizeof(_i) > sizeof(long)
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:578:25: note: in definition of macro '__compiletime_assert'
     578 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _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)
         |         ^~~~~~~~~~~~~~~~
   include/linux/nospec.h:61:9: note: in expansion of macro 'BUILD_BUG_ON'
      61 |         BUILD_BUG_ON(sizeof(_i) > sizeof(long));                        \
         |         ^~~~~~~~~~~~
   arch/x86/kvm/svm/svm.c:3469:17: note: in expansion of macro 'array_index_nospec'
    3469 |         index = array_index_nospec(exit_code, ARRAY_SIZE(svm_exit_handlers));
         |                 ^~~~~~~~~~~~~~~~~~
--
   In file included from <command-line>:
   svm/svm.c: In function 'svm_invoke_exit_handler':
>> include/linux/compiler_types.h:597:45: error: call to '__compiletime_assert_1122' declared with attribute error: BUILD_BUG_ON failed: sizeof(_i) > sizeof(long)
     597 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:578:25: note: in definition of macro '__compiletime_assert'
     578 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:597:9: note: in expansion of macro '_compiletime_assert'
     597 |         _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)
         |         ^~~~~~~~~~~~~~~~
   include/linux/nospec.h:61:9: note: in expansion of macro 'BUILD_BUG_ON'
      61 |         BUILD_BUG_ON(sizeof(_i) > sizeof(long));                        \
         |         ^~~~~~~~~~~~
   svm/svm.c:3469:17: note: in expansion of macro 'array_index_nospec'
    3469 |         index = array_index_nospec(exit_code, ARRAY_SIZE(svm_exit_handlers));
         |                 ^~~~~~~~~~~~~~~~~~


vim +/__compiletime_assert_1122 +597 include/linux/compiler_types.h

eb5c2d4b45e3d2 Will Deacon 2020-07-21  583  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  584  #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21  585  	__compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  586  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  587  /**
eb5c2d4b45e3d2 Will Deacon 2020-07-21  588   * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  589   * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2 Will Deacon 2020-07-21  590   * @msg:       a message to emit if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  591   *
eb5c2d4b45e3d2 Will Deacon 2020-07-21  592   * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  593   * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  594   * compiler has support to do so.
eb5c2d4b45e3d2 Will Deacon 2020-07-21  595   */
eb5c2d4b45e3d2 Will Deacon 2020-07-21  596  #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21 @597  	_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  598  

:::::: The code at line 597 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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