CC: Miguel Ojeda <ojeda(a)kernel.org&gt; tree: https://github.com/nbdd0121/linux rustdoc head: ba3afcc4cba7d728a4c7ef88fca8305d4af2e7c1 commit: f85857bc670e584c318535082376dc53f1f3c40c [127/369] Merge tag 'v5.12-rc2' into rust-sync config: riscv-randconfig-r033-20210517 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 0a34ff8bcb1df16fe7d643ccbe4567b2162c5024) 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/nbdd0121/linux/commit/f85857bc670e584c318535082376dc53... git remote add nbdd0121 https://github.com/nbdd0121/linux git fetch --no-tags nbdd0121 rustdoc git checkout f85857bc670e584c318535082376dc53f1f3c40c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 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+0x48): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: arch/riscv/kernel/head.o:(.head.text+0x9C): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: arch/riscv/kernel/head.o:(.head.text+0xB6): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: arch/riscv/kernel/head.o:(.head.text+0xE4): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: arch/riscv/kernel/head.o:(.head.text+0x1C0): 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+0x30A): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x452): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x5A4): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x732): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x8A0): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0xC50): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0xCAA): 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