[rgushchin:fix_stock_sync 55/139] include/asm-generic/div64.h:239:22: error: passing argument 1 of '__div64_32' from incompatible pointer type

[rgushchin:fix_stock_sync 55/139] include/asm-generic/div64.h:239:22: error: passing argument 1 of '__div64_32' from incompatible pointer type

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 6771 bytes --]

tree:   https://github.com/rgushchin/linux.git fix_stock_sync
head:   77c1d66e244190589ac167eacbd3df0d4a15d53f
commit: a5a63ffd466e3a459ae69de7dde968473de17903 [55/139] mm-throttle-allocators-when-failing-reclaim-over-memoryhigh-fix-fix
config: c6x-allyesconfig (attached as .config)
compiler: c6x-elf-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout a5a63ffd466e3a459ae69de7dde968473de17903
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=c6x 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from include/asm-generic/atomic.h:12:0,
                    from ./arch/c6x/include/generated/asm/atomic.h:1,
                    from include/linux/atomic.h:7,
                    from include/linux/page_counter.h:5,
                    from mm/memcontrol.c:25:
   mm/memcontrol.c: In function 'invalidate_reclaim_iterators':
   arch/c6x/include/asm/cmpxchg.h:55:3: warning: value computed is not used [-Wunused-value]
     ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr),  \
     ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
               (unsigned long)(o), \
               ~~~~~~~~~~~~~~~~~~~~~
               (unsigned long)(n), \
               ~~~~~~~~~~~~~~~~~~~~~
               sizeof(*(ptr))))
               ~~~~~~~~~~~~~~~~
   include/asm-generic/cmpxchg.h:106:28: note: in expansion of macro 'cmpxchg_local'
    #define cmpxchg(ptr, o, n) cmpxchg_local((ptr), (o), (n))
                               ^~~~~~~~~~~~~
   mm/memcontrol.c:1147:5: note: in expansion of macro 'cmpxchg'
        cmpxchg(&iter->position,
        ^~~~~~~
   In file included from ./arch/c6x/include/generated/asm/div64.h:1:0,
                    from include/linux/kernel.h:18,
                    from include/linux/page_counter.h:6,
                    from mm/memcontrol.c:25:
   mm/memcontrol.c: In function 'mem_cgroup_handle_over_high':
   include/asm-generic/div64.h:222:28: warning: comparison of distinct pointer types lacks a cast
     (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \
                               ^
   mm/memcontrol.c:2418:2: note: in expansion of macro 'do_div'
     do_div(overage, clamped_high);
     ^~~~~~
   In file included from include/asm-generic/barrier.h:16:0,
                    from ./arch/c6x/include/generated/asm/barrier.h:1,
                    from include/asm-generic/atomic.h:13,
                    from ./arch/c6x/include/generated/asm/atomic.h:1,
                    from include/linux/atomic.h:7,
                    from include/linux/page_counter.h:5,
                    from mm/memcontrol.c:25:
   include/asm-generic/div64.h:235:25: warning: right shift count >= width of type [-Wshift-count-overflow]
     } else if (likely(((n) >> 32) == 0)) {  \
                            ^
   include/linux/compiler.h:77:40: note: in definition of macro 'likely'
    # define likely(x) __builtin_expect(!!(x), 1)
                                           ^
   mm/memcontrol.c:2418:2: note: in expansion of macro 'do_div'
     do_div(overage, clamped_high);
     ^~~~~~
   In file included from ./arch/c6x/include/generated/asm/div64.h:1:0,
                    from include/linux/kernel.h:18,
                    from include/linux/page_counter.h:6,
                    from mm/memcontrol.c:25:
>> include/asm-generic/div64.h:239:22: error: passing argument 1 of '__div64_32' from incompatible pointer type [-Werror=incompatible-pointer-types]
      __rem = __div64_32(&(n), __base); \
                         ^
   mm/memcontrol.c:2418:2: note: in expansion of macro 'do_div'
     do_div(overage, clamped_high);
     ^~~~~~
   include/asm-generic/div64.h:213:17: note: expected 'uint64_t * {aka long long unsigned int *}' but argument is of type 'long unsigned int *'
    extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor);
                    ^~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/__div64_32 +239 include/asm-generic/div64.h

^1da177e4c3f41 Linus Torvalds 2005-04-16  215  
^1da177e4c3f41 Linus Torvalds 2005-04-16  216  /* The unnecessary pointer compare is there
^1da177e4c3f41 Linus Torvalds 2005-04-16  217   * to check for type safety (n must be 64bit)
^1da177e4c3f41 Linus Torvalds 2005-04-16  218   */
^1da177e4c3f41 Linus Torvalds 2005-04-16  219  # define do_div(n,base) ({				\
^1da177e4c3f41 Linus Torvalds 2005-04-16  220  	uint32_t __base = (base);			\
^1da177e4c3f41 Linus Torvalds 2005-04-16  221  	uint32_t __rem;					\
^1da177e4c3f41 Linus Torvalds 2005-04-16  222  	(void)(((typeof((n)) *)0) == ((uint64_t *)0));	\
911918aa7ef6f8 Nicolas Pitre  2015-11-02  223  	if (__builtin_constant_p(__base) &&		\
911918aa7ef6f8 Nicolas Pitre  2015-11-02  224  	    is_power_of_2(__base)) {			\
911918aa7ef6f8 Nicolas Pitre  2015-11-02  225  		__rem = (n) & (__base - 1);		\
911918aa7ef6f8 Nicolas Pitre  2015-11-02  226  		(n) >>= ilog2(__base);			\
461a5e51060c93 Nicolas Pitre  2015-10-30  227  	} else if (__div64_const32_is_OK &&		\
461a5e51060c93 Nicolas Pitre  2015-10-30  228  		   __builtin_constant_p(__base) &&	\
461a5e51060c93 Nicolas Pitre  2015-10-30  229  		   __base != 0) {			\
461a5e51060c93 Nicolas Pitre  2015-10-30  230  		uint32_t __res_lo, __n_lo = (n);	\
461a5e51060c93 Nicolas Pitre  2015-10-30  231  		(n) = __div64_const32(n, __base);	\
461a5e51060c93 Nicolas Pitre  2015-10-30  232  		/* the remainder can be computed with 32-bit regs */ \
461a5e51060c93 Nicolas Pitre  2015-10-30  233  		__res_lo = (n);				\
461a5e51060c93 Nicolas Pitre  2015-10-30  234  		__rem = __n_lo - __res_lo * __base;	\
911918aa7ef6f8 Nicolas Pitre  2015-11-02  235  	} else if (likely(((n) >> 32) == 0)) {		\
^1da177e4c3f41 Linus Torvalds 2005-04-16  236  		__rem = (uint32_t)(n) % __base;		\
^1da177e4c3f41 Linus Torvalds 2005-04-16  237  		(n) = (uint32_t)(n) / __base;		\
^1da177e4c3f41 Linus Torvalds 2005-04-16  238  	} else 						\
^1da177e4c3f41 Linus Torvalds 2005-04-16 @239  		__rem = __div64_32(&(n), __base);	\
^1da177e4c3f41 Linus Torvalds 2005-04-16  240  	__rem;						\
^1da177e4c3f41 Linus Torvalds 2005-04-16  241   })
^1da177e4c3f41 Linus Torvalds 2005-04-16  242  

:::::: The code at line 239 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 49810 bytes --]