Re: [PATCH] lib/math: Add int_log test suite

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

Hi Bruno,

kernel test robot noticed the following build warnings:

[auto build test WARNING on next-20240920]
[also build test WARNING on linus/master]
[cannot apply to akpm-mm/mm-nonmm-unstable akpm-mm/mm-everything v6.11 v6.11-rc7 v6.11-rc6 v6.11]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Bruno-Sobreira-Fran-a/lib-math-Add-int_log-test-suite/20240923-012721
base:   next-20240920
patch link:    https://lore.kernel.org/r/20240922172549.159928-1-brunofrancadevsec%40gmail.com
patch subject: [PATCH] lib/math: Add int_log test suite
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20240923/202409232338.5jngSmX9-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 13.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240923/202409232338.5jngSmX9-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/202409232338.5jngSmX9-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/linux/thread_info.h:12,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/alpha/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:79,
                    from include/linux/spinlock.h:56,
                    from include/linux/kref.h:16,
                    from include/kunit/test.h:22,
                    from lib/math/tests/int_log_kunit.c:2:
>> include/linux/limits.h:25:25: warning: conversion from 'long long unsigned int' to 'unsigned int' changes value from '18446744073709551615' to '4294967295' [-Woverflow]
      25 | #define U64_MAX         ((u64)~0ULL)
         |                         ^
   lib/math/tests/int_log_kunit.c:22:10: note: in expansion of macro 'U64_MAX'
      22 |         {U64_MAX, 536870911, "Log base 2 of MAX"},
         |          ^~~~~~~
>> include/linux/limits.h:25:25: warning: conversion from 'long long unsigned int' to 'unsigned int' changes value from '18446744073709551615' to '4294967295' [-Woverflow]
      25 | #define U64_MAX         ((u64)~0ULL)
         |                         ^
   lib/math/tests/int_log_kunit.c:33:10: note: in expansion of macro 'U64_MAX'
      33 |         {U64_MAX, 161614247, "Log base 10 of MAX"}
         |          ^~~~~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for OMAP2PLUS_MBOX
   Depends on [n]: MAILBOX [=y] && (ARCH_OMAP2PLUS || ARCH_K3)
   Selected by [y]:
   - TI_K3_M4_REMOTEPROC [=y] && REMOTEPROC [=y] && (ARCH_K3 || COMPILE_TEST [=y])


vim +25 include/linux/limits.h

3c9d017cc283df Andy Shevchenko 2023-08-04  14  
54d50897d544c8 Masahiro Yamada 2019-03-07  15  #define U8_MAX		((u8)~0U)
54d50897d544c8 Masahiro Yamada 2019-03-07  16  #define S8_MAX		((s8)(U8_MAX >> 1))
54d50897d544c8 Masahiro Yamada 2019-03-07  17  #define S8_MIN		((s8)(-S8_MAX - 1))
54d50897d544c8 Masahiro Yamada 2019-03-07  18  #define U16_MAX		((u16)~0U)
54d50897d544c8 Masahiro Yamada 2019-03-07  19  #define S16_MAX		((s16)(U16_MAX >> 1))
54d50897d544c8 Masahiro Yamada 2019-03-07  20  #define S16_MIN		((s16)(-S16_MAX - 1))
54d50897d544c8 Masahiro Yamada 2019-03-07  21  #define U32_MAX		((u32)~0U)
3f50f132d8400e John Fastabend  2020-03-30  22  #define U32_MIN		((u32)0)
54d50897d544c8 Masahiro Yamada 2019-03-07  23  #define S32_MAX		((s32)(U32_MAX >> 1))
54d50897d544c8 Masahiro Yamada 2019-03-07  24  #define S32_MIN		((s32)(-S32_MAX - 1))
54d50897d544c8 Masahiro Yamada 2019-03-07 @25  #define U64_MAX		((u64)~0ULL)
54d50897d544c8 Masahiro Yamada 2019-03-07  26  #define S64_MAX		((s64)(U64_MAX >> 1))
54d50897d544c8 Masahiro Yamada 2019-03-07  27  #define S64_MIN		((s64)(-S64_MAX - 1))
54d50897d544c8 Masahiro Yamada 2019-03-07  28  

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