On Thu, May 14, 2020 at 09:25:36AM +0800, kbuild test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: e098d7762d602be640c53565ceca342f81e55ad2 > commit: 157f1f138544760477af362159d2ecd4ad41bd8c [8047/8703] mm: memcontrol: switch to native NR_ANON_THPS counter > config: x86_64-randconfig-a016-20200513 (attached as .config) > compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 310d32cb80a611e6384a921e85607fea05841f26) > reproduce: > 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 > git checkout 157f1f138544760477af362159d2ecd4ad41bd8c > # 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: kbuild test robot <lkp@xxxxxxxxx> > > All errors (new ones prefixed by >>): > > >> ld.lld: error: undefined symbol: __compiletime_assert_457 > >>> referenced by memcontrol.c:1406 (mm/memcontrol.c:1406) > >>> memcontrol.o:(memory_stat_format) in archive mm/built-in.a That's the HPAGE_PMD_NR on !CONFIG_TRANSPARENT_HUGEPAGE. Fix: https://lore.kernel.org/linux-mm/20200512121750.GA397968@xxxxxxxxxxx/
