Hi Stephen, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 082fce125e57cff60687181c97f3a8ee620c38f5 commit: 4b96a3971d37e960da26d95aa3dbf4bd5f49d386 [12625/12775] Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git config: arm64-randconfig-r006-20221007 compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 791a7ae1ba3efd6bca96338e10ffde557ba83920) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=4b96a3971d37e960da26d95aa3dbf4bd5f49d386 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 4b96a3971d37e960da26d95aa3dbf4bd5f49d386 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "__tsan_memcpy" [arch/arm64/crypto/sha1-ce.ko] undefined! >> ERROR: modpost: "__tsan_memset" [arch/arm64/crypto/sha1-ce.ko] undefined! >> ERROR: modpost: "__tsan_memcpy" [arch/arm64/crypto/sha3-ce.ko] undefined! >> ERROR: modpost: "__tsan_memset" [arch/arm64/crypto/sha3-ce.ko] undefined! >> ERROR: modpost: "__tsan_memcpy" [arch/arm64/crypto/sm3-ce.ko] undefined! >> ERROR: modpost: "__tsan_memset" [arch/arm64/crypto/sm3-ce.ko] undefined! >> ERROR: modpost: "__tsan_memset" [arch/arm64/crypto/aes-ce-blk.ko] undefined! >> ERROR: modpost: "__tsan_memcpy" [arch/arm64/crypto/aes-ce-blk.ko] undefined! >> ERROR: modpost: "__tsan_memcpy" [arch/arm64/crypto/poly1305-neon.ko] undefined! >> ERROR: modpost: "__tsan_memset" [arch/arm64/crypto/poly1305-neon.ko] undefined! WARNING: modpost: suppressed 1243 unresolved symbol warnings because there were too many) -- 0-DAY CI Kernel Test Service https://01.org/lkp