On 9/10/22 10:33, Hyeonggon Yoo wrote: > On Sat, Sep 10, 2022 at 04:05:44PM +0800, kernel test robot wrote: >> tree: git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git for-6.1/fit_rcu_head >> head: 2af0ec317dc8f99f0620af23ff6c288bb6f49be5 >> commit: 2af0ec317dc8f99f0620af23ff6c288bb6f49be5 [2/2] mm/sl[au]b: rearrange struct slab fields to allow larger rcu_head >> config: i386-randconfig-a002 (https://download.01.org/0day-ci/archive/20220910/202209101614.lMCcS0Zj-lkp@xxxxxxxxx/config) >> compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1) >> 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 >> # https://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git/commit/?id=2af0ec317dc8f99f0620af23ff6c288bb6f49be5 >> git remote add vbabka-slab git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git >> git fetch --no-tags vbabka-slab for-6.1/fit_rcu_head >> git checkout 2af0ec317dc8f99f0620af23ff6c288bb6f49be5 >> # 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=i386 SHELL=/bin/bash >> >> If you fix the issue, kindly add following tag where applicable >> Reported-by: kernel test robot <lkp@xxxxxxxxx> >> >> All errors (new ones prefixed by >>): >> >> In file included from mm/mempool.c:21: >> >> mm/slab.h:94:1: error: static_assert failed due to requirement '((__builtin_offsetof(struct slab, counters)) & ((unsigned int)(16) - 1)) == 0' "IS_ALIGNED(offsetof(struct slab, counters), 16)" >> static_assert(IS_ALIGNED(offsetof(struct slab, counters), 16)); >> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/build_bug.h:77:34: note: expanded from macro 'static_assert' >> #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr) >> ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> include/linux/build_bug.h:78:41: note: expanded from macro '__static_assert' >> #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) >> ^ ~~~~ >> 1 error generated. >> >> >> vim +94 mm/slab.h >> >> 90 >> 91 #undef SLAB_MATCH >> 92 static_assert(sizeof(struct slab) <= sizeof(struct page)); >> 93 #if defined(CONFIG_HAVE_CMPXCHG_DOUBLE) && defined(CONFIG_SLUB) >> > 94 static_assert(IS_ALIGNED(offsetof(struct slab, counters), 16)); >> 95 #endif >> 96 > > Ah, it should be sizeof(void *) * 2, instead of 16. Oops, I kinda assumed CMPXCHG_DOUBLE is 64bit only thing. Wonder why bots didn't catch this in the previous push... >> -- >> 0-DAY CI Kernel Test Service >> https://01.org/lkp >> >
