./linux/mm.h:113:21: error: conflicting types for 'kmalloc'; have 'void *(unsigned int, unsigned int)'

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

:::::: 
:::::: Manual check reason: "low confidence bisect report"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Sean Christopherson <seanjc@google.com>
CC: Thomas Gleixner <tglx@linutronix.de>
CC: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   0e35b9b6ec0ffcc5e23cbdec09f5c622ad532b53
commit: a001cd248ab244633c5fabe4f7c707e13fc1d1cc rseq/selftests: Use weak symbol reference, not definition, to link with glibc
date:   10 months ago
:::::: branch date: 4 hours ago
:::::: commit date: 10 months ago
config: powerpc64-allnoconfig-bpf (https://download.01.org/0day-ci/archive/20260707/202607070734.M7fpSgzB-lkp@intel.com/config)
compiler: powerpc64-linux-gnu-gcc (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260707/202607070734.M7fpSgzB-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
| Fixes: a001cd248ab2 ("rseq/selftests: Use weak symbol reference, not definition, to link with glibc")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202607070734.M7fpSgzB-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from ./linux/scatterlist.h:7,
                    from scatterlist.c:9:
   ../../include/linux/bug.h:9:9: warning: "BUILD_BUG_ON_ZERO" redefined
       9 | #define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
         |         ^~~~~~~~~~~~~~~~~
   In file included from ../../include/linux/bits.h:30,
                    from ../../include/linux/../../../include/linux/gfp_types.h:5,
                    from ../../include/linux/gfp_types.h:1,
                    from ../../include/linux/gfp.h:6,
                    from ../../include/linux/slab.h:6,
                    from scatterlist.c:8:
   ../../include/linux/build_bug.h:16:9: note: this is the location of the previous definition
      16 | #define BUILD_BUG_ON_ZERO(e, ...) \
         |         ^~~~~~~~~~~~~~~~~
   In file included from ./linux/scatterlist.h:8:
   ./linux/mm.h:13:9: warning: "unlikely" redefined
      13 | #define unlikely
         |         ^~~~~~~~
   In file included from ../../include/linux/build_bug.h:5:
   ../../include/linux/compiler.h:150:10: note: this is the location of the previous definition
     150 | # define unlikely(x)            __builtin_expect(!!(x), 0)
         |          ^~~~~~~~
   ./linux/mm.h:33:9: warning: "__ALIGN_KERNEL" redefined
      33 | #define __ALIGN_KERNEL(x, a)            __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
         |         ^~~~~~~~~~~~~~
   In file included from ../../include/vdso/const.h:5,
                    from ../../include/vdso/bits.h:5,
                    from ../../include/linux/bits.h:5:
   ../../include/uapi/linux/const.h:48:9: note: this is the location of the previous definition
      48 | #define __ALIGN_KERNEL(x, a)            __ALIGN_KERNEL_MASK(x, (__typeof__(x))(a) - 1)
         |         ^~~~~~~~~~~~~~
   ./linux/mm.h:63:9: warning: "__PASTE" redefined
      63 | #define __PASTE(a,b) ___PASTE(a,b)
         |         ^~~~~~~
   ../../include/linux/compiler.h:239:9: note: this is the location of the previous definition
     239 | #define __PASTE(a, b) ___PASTE(a, b)
         |         ^~~~~~~
>> ./linux/mm.h:113:21: error: conflicting types for 'kmalloc'; have 'void *(unsigned int,  unsigned int)'
     113 | static inline void *kmalloc(unsigned int size, unsigned int flags)
         |                     ^~~~~~~
   ../../include/linux/slab.h:13:7: note: previous declaration of 'kmalloc' with type 'void *(size_t,  gfp_t)' {aka 'void *(long unsigned int,  gfp_t)'}
      13 | void *kmalloc(size_t size, gfp_t gfp);
         |       ^~~~~~~
>> ./linux/mm.h:119:1: error: conflicting types for 'kmalloc_array'; have 'void *(unsigned int,  unsigned int,  unsigned int)'
     119 | kmalloc_array(unsigned int n, unsigned int size, unsigned int flags)
         | ^~~~~~~~~~~~~
   ../../include/linux/slab.h:15:7: note: previous declaration of 'kmalloc_array' with type 'void *(size_t,  size_t,  gfp_t)' {aka 'void *(long unsigned int,  long unsigned int,  gfp_t)'}
      15 | void *kmalloc_array(size_t n, size_t size, gfp_t gfp);
         |       ^~~~~~~~~~~~~
   ./linux/scatterlist.h:180:64: warning: 'struct folio' declared inside parameter list will not be visible outside of this definition or declaration
     180 | static inline void sg_set_folio(struct scatterlist *sg, struct folio *folio,
         |                                                                ^~~~~
   ./linux/scatterlist.h: In function 'sg_set_folio':
>> ./linux/scatterlist.h:185:34: error: invalid use of undefined type 'struct folio'
     185 |         sg_assign_page(sg, &folio->page);
         |                                  ^~
   scatterlist.c: At top level:
   scatterlist.c:12:10: fatal error: linux/bvec.h: No such file or directory
      12 | #include <linux/bvec.h>
         |          ^~~~~~~~~~~~~~
   compilation terminated.

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