Hi Andrew, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: ba31f97d43be41ca99ab72a6131d7c226306865f commit: aec0fae62e47050019474936248a311a0ab08705 KVM: arm64: Log source when panicking from nVHE hyp date: 5 months ago config: arm64-randconfig-r024-20210814 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 1f7b25ea76a925aca690da28de9d78db7ca99d0c) 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/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 aec0fae62e47050019474936248a311a0ab08705 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:182:25: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_CP14_64] = kvm_handle_cp14_64, ^~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:183:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_HVC32] = handle_hvc, ^~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:184:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_SMC32] = handle_smc, ^~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:185:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_HVC64] = handle_hvc, ^~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:186:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_SMC64] = handle_smc, ^~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:187:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_SYS64] = kvm_handle_sys_reg, ^~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:188:21: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_SVE] = handle_sve, ^~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:189:26: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_IABT_LOW] = kvm_handle_guest_abort, ^~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:190:26: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_DABT_LOW] = kvm_handle_guest_abort, ^~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:191:28: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_SOFTSTP_LOW]= kvm_handle_guest_debug, ^~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:192:28: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_WATCHPT_LOW]= kvm_handle_guest_debug, ^~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:193:28: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_BREAKPT_LOW]= kvm_handle_guest_debug, ^~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:194:24: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_BKPT32] = kvm_handle_guest_debug, ^~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:195:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_BRK64] = kvm_handle_guest_debug, ^~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:196:26: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_FP_ASIMD] = handle_no_fpsimd, ^~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:197:21: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] [ESR_ELx_EC_PAC] = kvm_handle_ptrauth, ^~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:176:27: note: previous initialization is here [0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec, ^~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/handle_exit.c:318:4: error: implicit declaration of function 'bug_get_file_line' [-Werror,-Wimplicit-function-declaration] bug_get_file_line(bug, &file, &line); ^ void __noreturn __cold nvhe_hyp_panic_handler(u64 esr, u64 spsr, u64 elr, ^ arch/arm64/kvm/handle_exit.c:295:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void __noreturn __cold nvhe_hyp_panic_handler(u64 esr, u64 spsr, u64 elr, ^ static 22 warnings and 1 error generated. vim +/nvhe_hyp_panic_handler +295 arch/arm64/kvm/handle_exit.c 294 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org