tree:   https://github.com/weiny2/linux-kernel.git tip-pks-v4-2020-12-17
head:   c4c3d898d21401b51941cd75b3e59c2baec59505
commit: c4c3d898d21401b51941cd75b3e59c2baec59505 [18/18] kmap: Add stray access protection for device pages
config: x86_64-randconfig-a016-20201217 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project cee1e7d14f4628d6174b33640d502bff3b54ae45)
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 x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://github.com/weiny2/linux-kernel/commit/c4c3d898d21401b51941cd75b3e59c2baec59505
        git remote add weiny2 https://github.com/weiny2/linux-kernel.git
        git fetch --no-tags weiny2 tip-pks-v4-2020-12-17
        git checkout c4c3d898d21401b51941cd75b3e59c2baec59505
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

All errors (new ones prefixed by >>):

   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:28:
   In file included from include/linux/cgroup-defs.h:22:
   In file included from include/linux/bpf-cgroup.h:5:
   In file included from include/linux/bpf.h:21:
   In file included from include/linux/kallsyms.h:12:
   include/linux/mm.h:1196:43: warning: declaration of 'enum dev_access_mod' will not be visible outside of this function [-Wvisibility]
   static inline void dev_access_enable(enum dev_access_mod mode) { }
                                             ^
   include/linux/mm.h:1196:58: error: variable has incomplete type 'enum dev_access_mod'
   static inline void dev_access_enable(enum dev_access_mod mode) { }
                                                            ^
   include/linux/mm.h:1196:43: note: forward declaration of 'enum dev_access_mod'
   static inline void dev_access_enable(enum dev_access_mod mode) { }
                                             ^
   include/linux/mm.h:1197:44: warning: declaration of 'enum dev_access_mod' will not be visible outside of this function [-Wvisibility]
   static inline void dev_access_disable(enum dev_access_mod mode) { }
                                              ^
   include/linux/mm.h:1197:59: error: variable has incomplete type 'enum dev_access_mod'
   static inline void dev_access_disable(enum dev_access_mod mode) { }
                                                             ^
   include/linux/mm.h:1197:44: note: forward declaration of 'enum dev_access_mod'
   static inline void dev_access_disable(enum dev_access_mod mode) { }
                                              ^
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:22:
   In file included from include/linux/writeback.h:14:
   In file included from include/linux/blk-cgroup.h:23:
   In file included from include/linux/blkdev.h:14:
   In file included from include/linux/pagemap.h:11:
>> include/linux/highmem.h:40:20: error: argument type 'enum dev_access_mod' is incomplete
           dev_access_enable(mode);
                             ^~~~
   include/linux/mm.h:1196:43: note: forward declaration of 'enum dev_access_mod'
   static inline void dev_access_enable(enum dev_access_mod mode) { }
                                             ^
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:22:
   In file included from include/linux/writeback.h:14:
   In file included from include/linux/blk-cgroup.h:23:
   In file included from include/linux/blkdev.h:14:
   In file included from include/linux/pagemap.h:11:
   include/linux/highmem.h:48:21: error: argument type 'enum dev_access_mod' is incomplete
           dev_access_disable(mode);
                              ^~~~
   include/linux/mm.h:1197:44: note: forward declaration of 'enum dev_access_mod'
   static inline void dev_access_disable(enum dev_access_mod mode) { }
                                              ^
   2 warnings and 4 errors generated.
--
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:28:
   In file included from include/linux/cgroup-defs.h:22:
   In file included from include/linux/bpf-cgroup.h:5:
   In file included from include/linux/bpf.h:21:
   In file included from include/linux/kallsyms.h:12:
   include/linux/mm.h:1196:43: warning: declaration of 'enum dev_access_mod' will not be visible outside of this function [-Wvisibility]
   static inline void dev_access_enable(enum dev_access_mod mode) { }
                                             ^
   include/linux/mm.h:1196:58: error: variable has incomplete type 'enum dev_access_mod'
   static inline void dev_access_enable(enum dev_access_mod mode) { }
                                                            ^
   include/linux/mm.h:1196:43: note: forward declaration of 'enum dev_access_mod'
   static inline void dev_access_enable(enum dev_access_mod mode) { }
                                             ^
   include/linux/mm.h:1197:44: warning: declaration of 'enum dev_access_mod' will not be visible outside of this function [-Wvisibility]
   static inline void dev_access_disable(enum dev_access_mod mode) { }
                                              ^
   include/linux/mm.h:1197:59: error: variable has incomplete type 'enum dev_access_mod'
   static inline void dev_access_disable(enum dev_access_mod mode) { }
                                                             ^
   include/linux/mm.h:1197:44: note: forward declaration of 'enum dev_access_mod'
   static inline void dev_access_disable(enum dev_access_mod mode) { }
                                              ^
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:22:
   In file included from include/linux/writeback.h:14:
   In file included from include/linux/blk-cgroup.h:23:
   In file included from include/linux/blkdev.h:14:
   In file included from include/linux/pagemap.h:11:
>> include/linux/highmem.h:40:20: error: argument type 'enum dev_access_mod' is incomplete
           dev_access_enable(mode);
                             ^~~~
   include/linux/mm.h:1196:43: note: forward declaration of 'enum dev_access_mod'
   static inline void dev_access_enable(enum dev_access_mod mode) { }
                                             ^
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:22:
   In file included from include/linux/writeback.h:14:
   In file included from include/linux/blk-cgroup.h:23:
   In file included from include/linux/blkdev.h:14:
   In file included from include/linux/pagemap.h:11:
   include/linux/highmem.h:48:21: error: argument type 'enum dev_access_mod' is incomplete
           dev_access_disable(mode);
                              ^~~~
   include/linux/mm.h:1197:44: note: forward declaration of 'enum dev_access_mod'
   static inline void dev_access_disable(enum dev_access_mod mode) { }
                                              ^
   2 warnings and 4 errors generated.
   make[2]: *** [scripts/Makefile.build:117: arch/x86/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [Makefile:1200: prepare0] Error 2
   make[1]: Target 'modules_prepare' not remade because of errors.
   make: *** [Makefile:185: __sub-make] Error 2
   make: Target 'modules_prepare' not remade because of errors.
--
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:28:
   In file included from include/linux/cgroup-defs.h:22:
   In file included from include/linux/bpf-cgroup.h:5:
   In file included from include/linux/bpf.h:21:
   In file included from include/linux/kallsyms.h:12:
   include/linux/mm.h:1196:43: warning: declaration of 'enum dev_access_mod' will not be visible outside of this function [-Wvisibility]
   static inline void dev_access_enable(enum dev_access_mod mode) { }
                                             ^
   include/linux/mm.h:1196:58: error: variable has incomplete type 'enum dev_access_mod'
   static inline void dev_access_enable(enum dev_access_mod mode) { }
                                                            ^
   include/linux/mm.h:1196:43: note: forward declaration of 'enum dev_access_mod'
   static inline void dev_access_enable(enum dev_access_mod mode) { }
                                             ^
   include/linux/mm.h:1197:44: warning: declaration of 'enum dev_access_mod' will not be visible outside of this function [-Wvisibility]
   static inline void dev_access_disable(enum dev_access_mod mode) { }
                                              ^
   include/linux/mm.h:1197:59: error: variable has incomplete type 'enum dev_access_mod'
   static inline void dev_access_disable(enum dev_access_mod mode) { }
                                                             ^
   include/linux/mm.h:1197:44: note: forward declaration of 'enum dev_access_mod'
   static inline void dev_access_disable(enum dev_access_mod mode) { }
                                              ^
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:22:
   In file included from include/linux/writeback.h:14:
   In file included from include/linux/blk-cgroup.h:23:
   In file included from include/linux/blkdev.h:14:
   In file included from include/linux/pagemap.h:11:
>> include/linux/highmem.h:40:20: error: argument type 'enum dev_access_mod' is incomplete
           dev_access_enable(mode);
                             ^~~~
   include/linux/mm.h:1196:43: note: forward declaration of 'enum dev_access_mod'
   static inline void dev_access_enable(enum dev_access_mod mode) { }
                                             ^
   In file included from arch/x86/kernel/asm-offsets.c:13:
   In file included from include/linux/suspend.h:5:
   In file included from include/linux/swap.h:9:
   In file included from include/linux/memcontrol.h:22:
   In file included from include/linux/writeback.h:14:
   In file included from include/linux/blk-cgroup.h:23:
   In file included from include/linux/blkdev.h:14:
   In file included from include/linux/pagemap.h:11:
   include/linux/highmem.h:48:21: error: argument type 'enum dev_access_mod' is incomplete
           dev_access_disable(mode);
                              ^~~~
   include/linux/mm.h:1197:44: note: forward declaration of 'enum dev_access_mod'
   static inline void dev_access_disable(enum dev_access_mod mode) { }
                                              ^
   2 warnings and 4 errors generated.
   make[2]: *** [scripts/Makefile.build:117: arch/x86/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [Makefile:1200: prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [Makefile:185: __sub-make] Error 2
   make: Target 'prepare' not remade because of errors.


vim +40 include/linux/highmem.h

    34	
    35	static inline void dev_page_enable_access(struct page *page,
    36						  enum dev_access_mode mode)
    37	{
    38		if (!page_is_access_protected(page))
    39			return;
  > 40		dev_access_enable(mode);
    41	}
    42	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org