tree: https://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git for-next head: 7b1e6a22a4fd0dafc5b97a2c92fd3b13ccab2bdc commit: b4a9f4bee31449bcea678b88146c420130a7a63d [46/66] btrfs: scrub: per-device bandwidth control config: riscv-randconfig-c023-20210519 (attached as .config) compiler: riscv32-linux-gcc (GCC) 9.3.0 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/kdave/linux.git/commit/?i... git remote add kdave https://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git git fetch --no-tags kdave for-next git checkout b4a9f4bee31449bcea678b88146c420130a7a63d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): riscv32-linux-ld: section .data LMA [0000000000800000,0000000000a0ee5b] overlaps section .text LMA [0000000000086ce0,0000000000c429a5] riscv32-linux-ld: section __ex_table LMA [00000000012c3620,00000000012c4607] overlaps section .rodata LMA [0000000000c42a00,000000000134b268] riscv32-linux-ld: section .rodata VMA [00000000c0c42a00,00000000c134b268] overlaps section .bss VMA [00000000c0bca000,00000000c12c361f] riscv32-linux-ld: fs/btrfs/scrub.o: in function `scrub_put_ctx': scrub.c:(.text+0x1ed4): undefined reference to `__udivdi3' riscv32-linux-ld: fs/btrfs/scrub.o: in function `.L395': Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for LOCKDEP Depends on DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT && (FRAME_POINTER || MIPS || PPC || S390 || MICROBLAZE || ARM || ARC || X86) Selected by - PROVE_LOCKING && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT - LOCK_STAT && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT - DEBUG_LOCK_ALLOC && DEBUG_KERNEL && LOCK_DEBUGGING_SUPPORT --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org