tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 2996bd3f6ca9ea529b40c369a94b247657abdb4d commit: 785037f08e4f6255041131d3575ca13bfe603ddf [10800/10966] Merge remote-tracking branch 'tip/auto-latest' config: arm-randconfig-r031-20201206 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project fc7818f5d6906555cebad2c2e7c313a383b9cb82) 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/next/linux-next.git/commit/?id=785037f08e4f6255041131d3575ca13bfe603ddf git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 785037f08e4f6255041131d3575ca13bfe603ddf # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from arch/arm/mm/kasan_init.c:18: >> arch/arm/include/asm/highmem.h:52:43: error: implicit declaration of function 'cache_is_vivt' [-Werror,-Wimplicit-function-declaration] if (IS_ENABLED(CONFIG_DEBUG_HIGHMEM) && !cache_is_vivt()) ^ 1 error generated. vim +/cache_is_vivt +52 arch/arm/include/asm/highmem.h 2a15ba82fa6ca3 Thomas Gleixner 2020-11-03 49 2a15ba82fa6ca3 Thomas Gleixner 2020-11-03 50 static inline void *arch_kmap_local_high_get(struct page *page) 2a15ba82fa6ca3 Thomas Gleixner 2020-11-03 51 { 2a15ba82fa6ca3 Thomas Gleixner 2020-11-03 @52 if (IS_ENABLED(CONFIG_DEBUG_HIGHMEM) && !cache_is_vivt()) 2a15ba82fa6ca3 Thomas Gleixner 2020-11-03 53 return NULL; 2a15ba82fa6ca3 Thomas Gleixner 2020-11-03 54 return kmap_high_get(page); 2a15ba82fa6ca3 Thomas Gleixner 2020-11-03 55 } 2a15ba82fa6ca3 Thomas Gleixner 2020-11-03 56 #define arch_kmap_local_high_get arch_kmap_local_high_get 2a15ba82fa6ca3 Thomas Gleixner 2020-11-03 57 :::::: The code at line 52 was first introduced by commit :::::: 2a15ba82fa6ca3f35502b3060f22118a938d2889 ARM: highmem: Switch to generic kmap atomic :::::: TO: Thomas Gleixner <tglx@xxxxxxxxxxxxx> :::::: CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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