Re: [PATCH v5 5/9] pidfs, coredump: add PIDFD_INFO_COREDUMP

Re: [PATCH v5 5/9] pidfs, coredump: add PIDFD_INFO_COREDUMP

[kernel test robot]

Hi Christian,

kernel test robot noticed the following build errors:

[auto build test ERROR on 4dd6566b5a8ca1e8c9ff2652c2249715d6c64217]

url:    https://github.com/intel-lab-lkp/linux/commits/Christian-Brauner/coredump-massage-format_corname/20250509-183048
base:   4dd6566b5a8ca1e8c9ff2652c2249715d6c64217
patch link:    https://lore.kernel.org/r/20250509-work-coredump-socket-v5-5-23c5b14df1bc%40kernel.org
patch subject: [PATCH v5 5/9] pidfs, coredump: add PIDFD_INFO_COREDUMP
config: parisc-allmodconfig (https://download.01.org/0day-ci/archive/20250514/202505140421.xJDaRD9F-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250514/202505140421.xJDaRD9F-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/202505140421.xJDaRD9F-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from <command-line>:
   fs/pidfs.c: In function 'pidfs_coredump_cookie':
>> include/linux/compiler_types.h:557:45: error: call to '__compiletime_assert_424' declared with attribute error: Need native word sized stores/loads for atomicity.
     557 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |                                             ^
   include/linux/compiler_types.h:538:25: note: in definition of macro '__compiletime_assert'
     538 |                         prefix ## suffix();                             \
         |                         ^~~~~~
   include/linux/compiler_types.h:557:9: note: in expansion of macro '_compiletime_assert'
     557 |         _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |         ^~~~~~~~~~~~~~~~~~~
   include/linux/compiler_types.h:560:9: note: in expansion of macro 'compiletime_assert'
     560 |         compiletime_assert(__native_word(t),                            \
         |         ^~~~~~~~~~~~~~~~~~
   arch/parisc/include/asm/barrier.h:38:9: note: in expansion of macro 'compiletime_assert_atomic_type'
      38 |         compiletime_assert_atomic_type(*p);                             \
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/asm-generic/barrier.h:172:55: note: in expansion of macro '__smp_store_release'
     172 | #define smp_store_release(p, v) do { kcsan_release(); __smp_store_release(p, v); } while (0)
         |                                                       ^~~~~~~~~~~~~~~~~~~
   fs/pidfs.c:608:9: note: in expansion of macro 'smp_store_release'
     608 |         smp_store_release(&exit_info->coredump_cookie, coredump_cookie);
         |         ^~~~~~~~~~~~~~~~~


vim +/__compiletime_assert_424 +557 include/linux/compiler_types.h

eb5c2d4b45e3d2 Will Deacon 2020-07-21  543  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  544  #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21  545  	__compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  546  
eb5c2d4b45e3d2 Will Deacon 2020-07-21  547  /**
eb5c2d4b45e3d2 Will Deacon 2020-07-21  548   * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  549   * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2 Will Deacon 2020-07-21  550   * @msg:       a message to emit if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21  551   *
eb5c2d4b45e3d2 Will Deacon 2020-07-21  552   * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  553   * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21  554   * compiler has support to do so.
eb5c2d4b45e3d2 Will Deacon 2020-07-21  555   */
eb5c2d4b45e3d2 Will Deacon 2020-07-21  556  #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21 @557  	_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2 Will Deacon 2020-07-21  558  

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