tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable
head:   3dabb05be4612527104198f754de8c5443f7f765
commit: e435b85a4aea7a82259105d5d8025655460052e1 [111/127] mm, page_owner: add page_owner_stacks file to print out only stacks and their counte
config: arm-buildonly-randconfig-r006-20230517
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project b0fb98227c90adf2536c9ad644a74d5e92961111)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git/commit/?id=e435b85a4aea7a82259105d5d8025655460052e1
        git remote add akpm-mm https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git
        git fetch --no-tags akpm-mm mm-unstable
        git checkout e435b85a4aea7a82259105d5d8025655460052e1
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/gpu/drm/tilcdc/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305171411.iw7APiY8-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/gpu/drm/tilcdc/tilcdc_plane.c:7:
   In file included from include/drm/drm_atomic.h:31:
   In file included from include/drm/drm_crtc.h:30:
   In file included from include/drm/drm_modeset_lock.h:28:
>> include/linux/stackdepot.h:116:26: error: declaration of 'struct seq_file' will not be visible outside of this function [-Werror,-Wvisibility]
   void *stack_start(struct seq_file *m, loff_t *ppos);
                            ^
   include/linux/stackdepot.h:117:25: error: declaration of 'struct seq_file' will not be visible outside of this function [-Werror,-Wvisibility]
   void *stack_next(struct seq_file *m, void *v, loff_t *ppos);
                           ^
   include/linux/stackdepot.h:118:24: error: declaration of 'struct seq_file' will not be visible outside of this function [-Werror,-Wvisibility]
   int stack_print(struct seq_file *m, void *v);
                          ^
   3 errors generated.


vim +116 include/linux/stackdepot.h

    99	
   100	/**
   101	 * stack_depot_save - Save a stack trace to stack depot
   102	 *
   103	 * @entries:		Pointer to the stack trace
   104	 * @nr_entries:		Number of frames in the stack
   105	 * @alloc_flags:	Allocation GFP flags
   106	 *
   107	 * Context: Contexts where allocations via alloc_pages() are allowed.
   108	 *          See __stack_depot_save() for more details.
   109	 *
   110	 * Return: Handle of the stack trace stored in depot, 0 on failure
   111	 */
   112	depot_stack_handle_t stack_depot_save(unsigned long *entries,
   113					      unsigned int nr_entries, gfp_t gfp_flags);
   114	
   115	#ifdef CONFIG_PAGE_OWNER
 > 116	void *stack_start(struct seq_file *m, loff_t *ppos);
   117	void *stack_next(struct seq_file *m, void *v, loff_t *ppos);
   118	int stack_print(struct seq_file *m, void *v);
   119	#endif
   120	

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