[sj:damon/next 12/59] include/vdso/limits.h:13:25: warning: conversion from 'long unsigned int' to 'unsigned int' changes value from '18446744073709551615' to '4294967295'

[sj:damon/next 12/59] include/vdso/limits.h:13:25: warning: conversion from 'long unsigned int' to 'unsigned int' changes value from '18446744073709551615' to '4294967295'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/sj/linux.git damon/next
head:   78907e9aaa2afc17557ccada5eeafa2f4423ddcc
commit: 6a0ed0a7aac349150628bda45521200cb75006c2 [12/59] samples/damon/prcl: implement schemes setup
config: s390-allyesconfig (https://download.01.org/0day-ci/archive/20241123/202411231420.di7hRYuZ-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241123/202411231420.di7hRYuZ-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/202411231420.di7hRYuZ-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/linux/limits.h:7,
                    from include/linux/kernel.h:17,
                    from include/linux/cpumask.h:11,
                    from arch/s390/include/asm/processor.h:31,
                    from include/linux/sched.h:13,
                    from include/linux/cgroup.h:12,
                    from include/linux/memcontrol.h:13,
                    from include/linux/damon.h:11,
                    from samples/damon/prcl.c:9:
   samples/damon/prcl.c: In function 'damon_sample_prcl_start':
>> include/vdso/limits.h:13:25: warning: conversion from 'long unsigned int' to 'unsigned int' changes value from '18446744073709551615' to '4294967295' [-Woverflow]
      13 | #define ULONG_MAX       (~0UL)
         |                         ^
   samples/damon/prcl.c:86:43: note: in expansion of macro 'ULONG_MAX'
      86 |                         .max_age_region = ULONG_MAX},
         |                                           ^~~~~~~~~


vim +13 include/vdso/limits.h

3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20   4  
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20   5  #define USHRT_MAX	((unsigned short)~0U)
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20   6  #define SHRT_MAX	((short)(USHRT_MAX >> 1))
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20   7  #define SHRT_MIN	((short)(-SHRT_MAX - 1))
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20   8  #define INT_MAX		((int)(~0U >> 1))
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20   9  #define INT_MIN		(-INT_MAX - 1)
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  10  #define UINT_MAX	(~0U)
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  11  #define LONG_MAX	((long)(~0UL >> 1))
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  12  #define LONG_MIN	(-LONG_MAX - 1)
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20 @13  #define ULONG_MAX	(~0UL)
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  14  #define LLONG_MAX	((long long)(~0ULL >> 1))
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  15  #define LLONG_MIN	(-LLONG_MAX - 1)
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  16  #define ULLONG_MAX	(~0ULL)
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  17  #define UINTPTR_MAX	ULONG_MAX
3e0e9f8c6e3ca9 Vincenzo Frascino 2020-03-20  18  

:::::: The code at line 13 was first introduced by commit
:::::: 3e0e9f8c6e3ca92154a74edc23a8872da921d2b6 linux/limits.h: Extract common header for vDSO

:::::: TO: Vincenzo Frascino <vincenzo.frascino@arm.com>
:::::: CC: Thomas Gleixner <tglx@linutronix.de>

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

Re: [sj:damon/next 12/59] include/vdso/limits.h:13:25: warning: conversion from 'long unsigned int' to 'unsigned int' changes value from '18446744073709551615' to '4294967295'

[SeongJae Park]

On Sat, 23 Nov 2024 14:28:19 +0800 kernel test robot <lkp@intel.com> wrote:

> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/sj/linux.git damon/next
> head:   78907e9aaa2afc17557ccada5eeafa2f4423ddcc
> commit: 6a0ed0a7aac349150628bda45521200cb75006c2 [12/59] samples/damon/prcl: implement schemes setup
> config: s390-allyesconfig (https://download.01.org/0day-ci/archive/20241123/202411231420.di7hRYuZ-lkp@intel.com/config)
> compiler: s390-linux-gcc (GCC) 14.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241123/202411231420.di7hRYuZ-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/202411231420.di7hRYuZ-lkp@intel.com/
> 
> All warnings (new ones prefixed by >>):
> 
>    In file included from include/linux/limits.h:7,
>                     from include/linux/kernel.h:17,
>                     from include/linux/cpumask.h:11,
>                     from arch/s390/include/asm/processor.h:31,
>                     from include/linux/sched.h:13,
>                     from include/linux/cgroup.h:12,
>                     from include/linux/memcontrol.h:13,
>                     from include/linux/damon.h:11,
>                     from samples/damon/prcl.c:9:
>    samples/damon/prcl.c: In function 'damon_sample_prcl_start':
> >> include/vdso/limits.h:13:25: warning: conversion from 'long unsigned int' to 'unsigned int' changes value from '18446744073709551615' to '4294967295' [-Woverflow]
>       13 | #define ULONG_MAX       (~0UL)
>          |                         ^
>    samples/damon/prcl.c:86:43: note: in expansion of macro 'ULONG_MAX'
>       86 |                         .max_age_region = ULONG_MAX},
>          |                                           ^~~~~~~~~

Thank you for this report!  I replied to same report:
https://lore.kernel.org/20241123154433.52687-1-sj@kernel.org  Please refer to
the thread.


Thanks,
SJ

[...]