CC: linux-kernel(a)vger.kernel.org TO: Feng Tang <feng.tang(a)intel.com&gt; CC: Andrew Morton <akpm(a)linux-foundation.org&gt; CC: Linux Memory Management List <linux-mm(a)kvack.org&gt; tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: a0d54b4f5b219fb31f0776e9f53aa137e78ae431 commit: 09c60546f04f732d194a171b3a4ccc9ae1e704ba ./Makefile: add debug option to enable function aligned on 32 bytes date: 5 months ago config: riscv-randconfig-r002-20210112 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 32bcfcda4e28375e5a85268d2acfabcfcc011abf) 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 09c60546f04f732d194a171b3a4ccc9ae1e704ba # 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+0x8): 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+0x170): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x2A4): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x3E8): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x684): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x6EC): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x798): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x840): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x8EC): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.text+0x948): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.init.text+0x58): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.init.text+0x108): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.init.text+0x254): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.init.text+0x2D0): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.init.text+0x350): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax ld.lld: error: main.c:(.init.text+0x44C): 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