Hi Heiko, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: f600e0bbde8562a06bee31b3eb1b69d49acac4c5 commit: 6ef55060a1cc29dd54ff390f22cb3de266dab2b0 [3963/14039] s390: make use of CONFIG_FUNCTION_ALIGNMENT config: s390-randconfig-r022-20230424 (https://download.01.org/0day-ci/archive/20230426/202304260503.EVDTG0PJ-lkp@xxxxxxxxx/config) compiler: s390-linux-gcc (GCC) 12.1.0 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/next/linux-next.git/commit/?id=6ef55060a1cc29dd54ff390f22cb3de266dab2b0 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 6ef55060a1cc29dd54ff390f22cb3de266dab2b0 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 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> | Link: https://lore.kernel.org/oe-kbuild-all/202304260503.EVDTG0PJ-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): s390-linux-ld: drivers/net/arcnet/arc-rimi.o: in function `check_mirror': arc-rimi.c:(.text+0x16a): undefined reference to `ioremap' >> s390-linux-ld: arc-rimi.c:(.text+0x18c): undefined reference to `iounmap' s390-linux-ld: drivers/net/arcnet/arc-rimi.o: in function `arc_rimi_exit': arc-rimi.c:(.exit.text+0x2e): undefined reference to `iounmap' s390-linux-ld: drivers/net/arcnet/arc-rimi.o: in function `arcrimi_found': arc-rimi.c:(.init.text+0xd4): undefined reference to `ioremap' s390-linux-ld: arc-rimi.c:(.init.text+0x158): undefined reference to `iounmap' s390-linux-ld: arc-rimi.c:(.init.text+0x278): undefined reference to `iounmap' s390-linux-ld: arc-rimi.c:(.init.text+0x352): undefined reference to `ioremap' s390-linux-ld: arc-rimi.c:(.init.text+0x43a): undefined reference to `iounmap' s390-linux-ld: drivers/pcmcia/cistpl.o: in function `set_cis_map': cistpl.c:(.text+0x454): undefined reference to `ioremap' s390-linux-ld: cistpl.c:(.text+0x48a): undefined reference to `iounmap' s390-linux-ld: cistpl.c:(.text+0x4fa): undefined reference to `iounmap' s390-linux-ld: cistpl.c:(.text+0x50c): undefined reference to `ioremap' s390-linux-ld: drivers/pcmcia/cistpl.o: in function `release_cis_mem': cistpl.c:(.text+0xd26): undefined reference to `iounmap' -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests