CC: Miguel Ojeda <ojeda(a)kernel.org&gt; tree: https://github.com/ojeda/linux.git llvm-12-fix head: 6314f0c9616e8f715793cf711f2a885b5e8c4f3d commit: f85857bc670e584c318535082376dc53f1f3c40c [127/247] Merge tag 'v5.12-rc2' into rust-sync config: riscv-randconfig-r011-20210408 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 56ea2e2fdd691136d5e6631fa0e447173694b82c) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/ojeda/linux/commit/f85857bc670e584c318535082376dc53f1f... git remote add ojeda-linux https://github.com/ojeda/linux.git git fetch --no-tags ojeda-linux llvm-12-fix git checkout f85857bc670e584c318535082376dc53f1f3c40c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang 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 >>): ld.lld: error: arch/riscv/kernel/head.o:(.head.text+0x0): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: arch/riscv/kernel/head.o:(.head.text+0x8): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: arch/riscv/kernel/head.o:(.head.text+0x3E): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: arch/riscv/kernel/head.o:(.head.text+0x150): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: arch/riscv/kernel/head.o:(.head.text+0x114E): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: arch/riscv/kernel/head.o:(.head.text+0x1190): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: arch/riscv/kernel/head.o:(.head.text+0x11B0): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: arch/riscv/kernel/head.o:(.head.text+0x11CA): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x0): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x82): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x104): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x18E): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x30E): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x41E): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x56A): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x632): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x788): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x85A): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: too many errors emitted, stopping now (use -error-limit=0 to see all errors) --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org