tree: https://github.com/weiny2/linux-kernel.git lm-misc4 head: 413900345f279daed0a18bbe2a961937f3bed04a commit: ac6e51614cb3f8e21f9cc4361f99cf2b8797c777 [6/9] arch/kmap: Remove redundant arch specific kmaps config: mips-32r2_defconfig (attached as .config) compiler: mips-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout ac6e51614cb3f8e21f9cc4361f99cf2b8797c777 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from include/linux/bug.h:5, from include/linux/thread_info.h:12, from include/asm-generic/preempt.h:5, from ./arch/mips/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/spinlock.h:51, from include/linux/seqlock.h:36, from include/linux/time.h:6, from include/linux/compat.h:10, from arch/mips/kernel/asm-offsets.c:12: arch/mips/include/asm/cacheflush.h: In function 'flush_kernel_dcache_page': include/linux/page-flags.h:382:41: error: implicit declaration of function 'page_zonenum' [-Werror=implicit-function-declaration] 382 | #define PageHighMem(__p) is_highmem_idx(page_zonenum(__p)) | ^~~~~~~~~~~~ arch/mips/include/asm/bug.h:34:44: note: in definition of macro 'BUG_ON' 34 | #define BUG_ON(C) __BUG_ON((unsigned long)(C)) | ^ arch/mips/include/asm/cacheflush.h:131:31: note: in expansion of macro 'PageHighMem' 131 | BUG_ON(cpu_has_dc_aliases && PageHighMem(page)); | ^~~~~~~~~~~ In file included from arch/mips/include/asm/tlbflush.h:25, from arch/mips/include/asm/highmem.h:28, from arch/mips/include/asm/pgtable-32.h:22, from arch/mips/include/asm/pgtable.h:14, from include/linux/mm.h:95, from arch/mips/kernel/asm-offsets.c:15: arch/mips/include/asm/mmu_context.h: In function 'switch_mm': arch/mips/include/asm/mmu_context.h:165:2: error: implicit declaration of function 'htw_stop' [-Werror=implicit-function-declaration] 165 | htw_stop(); | ^~~~~~~~ 174 | htw_start(); | ^~~~~~~~~ | va_start In file included from arch/mips/include/asm/pgtable-32.h:22, from arch/mips/include/asm/pgtable.h:14, from include/linux/mm.h:95, from arch/mips/kernel/asm-offsets.c:15: arch/mips/include/asm/highmem.h: In function 'kmap': arch/mips/include/asm/highmem.h:55:15: error: implicit declaration of function '__kmap'; did you mean 'kmap'? [-Werror=implicit-function-declaration] 55 | void *addr = __kmap(page); | ^~~~~~ | kmap arch/mips/include/asm/highmem.h:55:15: warning: initialization of 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion] In file included from arch/mips/kernel/asm-offsets.c:15: include/linux/mm.h: At top level: include/linux/mm.h:1051:30: error: conflicting types for 'page_zonenum' 1051 | static inline enum zone_type page_zonenum(const struct page *page) | ^~~~~~~~~~~~ In file included from include/linux/bug.h:5, from include/linux/thread_info.h:12, from include/asm-generic/preempt.h:5, from ./arch/mips/include/generated/asm/preempt.h:1, from include/linux/preempt.h:78, from include/linux/spinlock.h:51, from include/linux/seqlock.h:36, from include/linux/time.h:6, from include/linux/compat.h:10, from arch/mips/kernel/asm-offsets.c:12: include/linux/page-flags.h:382:41: note: previous implicit declaration of 'page_zonenum' was here 382 | #define PageHighMem(__p) is_highmem_idx(page_zonenum(__p)) | ^~~~~~~~~~~~ arch/mips/include/asm/bug.h:34:44: note: in definition of macro 'BUG_ON' 34 | #define BUG_ON(C) __BUG_ON((unsigned long)(C)) | ^ arch/mips/include/asm/cacheflush.h:131:31: note: in expansion of macro 'PageHighMem' 131 | BUG_ON(cpu_has_dc_aliases && PageHighMem(page)); | ^~~~~~~~~~~ In file included from include/linux/pagemap.h:11, from include/linux/blkdev.h:16, from include/linux/blk-cgroup.h:23, from include/linux/writeback.h:14, from include/linux/memcontrol.h:22, from include/linux/swap.h:9, from include/linux/suspend.h:5, from arch/mips/kernel/asm-offsets.c:17: include/linux/highmem.h:34:14: error: conflicting types for '__kmap' 34 | extern void *__kmap(struct page *page); | ^~~~~~ In file included from arch/mips/include/asm/pgtable-32.h:22, from arch/mips/include/asm/pgtable.h:14, from include/linux/mm.h:95, from arch/mips/kernel/asm-offsets.c:15: arch/mips/include/asm/highmem.h:55:15: note: previous implicit declaration of '__kmap' was here 55 | void *addr = __kmap(page); | ^~~~~~ In file included from include/linux/pagemap.h:11, from include/linux/blkdev.h:16, from include/linux/blk-cgroup.h:23, from include/linux/writeback.h:14, from include/linux/memcontrol.h:22, from include/linux/swap.h:9, from include/linux/suspend.h:5, from arch/mips/kernel/asm-offsets.c:17: include/linux/highmem.h:40:21: error: redefinition of 'kmap' 40 | static inline void *kmap(struct page *page) | ^~~~ In file included from arch/mips/include/asm/pgtable-32.h:22, from arch/mips/include/asm/pgtable.h:14, from include/linux/mm.h:95, from arch/mips/kernel/asm-offsets.c:15: arch/mips/include/asm/highmem.h:53:21: note: previous definition of 'kmap' was here 53 | static inline void *kmap(struct page *page) | ^~~~ cc1: some warnings being treated as errors make[2]: *** [scripts/Makefile.build:100: arch/mips/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1141: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:180: sub-make] Error 2 34 real 7 user 15 sys 67.54% cpu make prepare vim +174 arch/mips/include/asm/mmu_context.h ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 157 ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 158 static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 159 struct task_struct *tsk) ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 160 { ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 161 unsigned int cpu = smp_processor_id(); ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 162 unsigned long flags; ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 163 local_irq_save(flags); ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 164 ed4cbc81addbc0 arch/mips/include/asm/mmu_context.h Markos Chandras 2015-01-26 165 htw_stop(); 42d5b846574f09 arch/mips/include/asm/mmu_context.h Paul Burton 2019-02-02 166 check_switch_mmu_context(next); ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 167 ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 168 /* ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 169 * Mark current->active_mm as not "active" anymore. ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 170 * We don't want to mislead possible IPI tlb flush routines. ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 171 */ 55b8cab49dd43d arch/mips/include/asm/mmu_context.h Rusty Russell 2009-09-24 172 cpumask_clear_cpu(cpu, mm_cpumask(prev)); 55b8cab49dd43d arch/mips/include/asm/mmu_context.h Rusty Russell 2009-09-24 173 cpumask_set_cpu(cpu, mm_cpumask(next)); ed4cbc81addbc0 arch/mips/include/asm/mmu_context.h Markos Chandras 2015-01-26 @174 htw_start(); ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 175 ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 176 local_irq_restore(flags); ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 177 } ^1da177e4c3f41 include/asm-mips/mmu_context.h Linus Torvalds 2005-04-16 178 :::::: The code at line 174 was first introduced by commit :::::: ed4cbc81addbc076b016c5b979fd1a02f0897f0a MIPS: HTW: Prevent accidental HTW start due to nested htw_{start, stop} :::::: TO: Markos Chandras <markos.chandras(a)imgtec.com&gt; :::::: CC: Ralf Baechle <ralf(a)linux-mips.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org