Hi Marco, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 89bf6e28373beef9577fa71f996a5f73a569617c commit: 7c201739beef1a586d806463f1465429cdce34c5 [1602/3190] kcsan: Instrument memcpy/memset/memmove with newer Clang config: s390-randconfig-r044-20221025 (attached as .config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920) 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 s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=7c201739beef1a586d806463f1465429cdce34c5 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 7c201739beef1a586d806463f1465429cdce34c5 # 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=s390 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 >>, old ones prefixed by <<): >> ERROR: modpost: "iounmap" [drivers/tty/ipwireless/ipwireless.ko] undefined! >> ERROR: modpost: "ioremap" [drivers/tty/ipwireless/ipwireless.ko] undefined! >> ERROR: modpost: "iounmap" [drivers/net/ethernet/fujitsu/fmvj18x_cs.ko] undefined! >> ERROR: modpost: "ioremap" [drivers/net/ethernet/fujitsu/fmvj18x_cs.ko] undefined! >> ERROR: modpost: "devm_ioremap" [drivers/net/ethernet/altera/altera_tse.ko] undefined! ERROR: modpost: "iounmap" [drivers/pcmcia/pcmcia.ko] undefined! ERROR: modpost: "ioremap" [drivers/pcmcia/pcmcia.ko] undefined! -- 0-DAY CI Kernel Test Service https://01.org/lkp
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