tree: https://github.com/weiny2/linux-kernel.git tip-pks-v4-2020-12-17 head: c4c3d898d21401b51941cd75b3e59c2baec59505 commit: 1bf1a3d00ba3e2afcbc4dcbf4e8bf870984a6393 [17/18] memremap: Add zone device access protection 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/1bf1a3d00ba3e2afcbc4dcbf4e8bf870984a6393 git remote add weiny2 https://github.com/weiny2/linux-kernel.git git fetch --no-tags weiny2 tip-pks-v4-2020-12-17 git checkout 1bf1a3d00ba3e2afcbc4dcbf4e8bf870984a6393 # 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 All error/warnings (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) { } ^ 2 warnings and 2 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) { } ^ 2 warnings and 2 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) { } ^ 2 warnings and 2 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 +1196 include/linux/mm.h 1178 1179 void __dev_access_enable(enum dev_access_mode mode); 1180 void __dev_access_disable(enum dev_access_mode mode); 1181 static __always_inline void dev_access_enable(enum dev_access_mode mode) 1182 { 1183 if (static_branch_unlikely(&dev_protection_static_key)) 1184 __dev_access_enable(mode); 1185 } 1186 static __always_inline void dev_access_disable(enum dev_access_mode mode) 1187 { 1188 if (static_branch_unlikely(&dev_protection_static_key)) 1189 __dev_access_disable(mode); 1190 } 1191 #else 1192 static inline bool page_is_access_protected(struct page *page) 1193 { 1194 return false; 1195 } > 1196 static inline void dev_access_enable(enum dev_access_mod mode) { } 1197 static inline void dev_access_disable(enum dev_access_mod mode) { } 1198 #endif /* CONFIG_ZONE_DEVICE_ACCESS_PROTECTION */ 1199 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org