tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 2ae0a045e6814c8c1d676d6153c605a65746aa29 commit: 5084a4cd510f887a4fcc9f3386de1fbea698c7c4 [4186/4898] ubsan: reintroduce signed overflow sanitizer config: s390-randconfig-r063-20240207 (https://download.01.org/0day-ci/archive/20240208/202402080538.FNTaeLJO-lkp@xxxxxxxxx/config) compiler: s390-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240208/202402080538.FNTaeLJO-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202402080538.FNTaeLJO-lkp@xxxxxxxxx/ Note: the linux-next/master HEAD 2ae0a045e6814c8c1d676d6153c605a65746aa29 builds fine. It may have been fixed somewhere. All errors (new ones prefixed by >>): s390-linux-ld: arch/s390/kernel/debug.o: in function `debug_output': >> debug.c:(.text+0x17ea): undefined reference to `__ubsan_handle_divrem_overflow' s390-linux-ld: arch/s390/kernel/debug.o: in function `debug_event_common': debug.c:(.text+0x213a): undefined reference to `__ubsan_handle_divrem_overflow' s390-linux-ld: arch/s390/kernel/debug.o: in function `debug_exception_common': debug.c:(.text+0x2760): undefined reference to `__ubsan_handle_divrem_overflow' >> s390-linux-ld: debug.c:(.text+0x2812): undefined reference to `__ubsan_handle_divrem_overflow' s390-linux-ld: arch/s390/kernel/debug.o: in function `debug_events_append': debug.c:(.text+0x2d18): undefined reference to `__ubsan_handle_divrem_overflow' s390-linux-ld: arch/s390/kernel/debug.o:debug.c:(.text+0x2e94): more undefined references to `__ubsan_handle_divrem_overflow' follow -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
