tree: https://github.com/hnaz/linux-mm master head: 074b4ea9811e2c47ae1ecada177629c19fa56d59 commit: da4561bd9c6b23e9579b85ffaced3f3b0b8dcd4c [28/122] arm64, scs: save scs_sp values per-cpu when switching stacks config: arm64-randconfig-r012-20220331 (https://download.01.org/0day-ci/archive/20220331/202203312036.a74e2QM9-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 881350a92d821d4f8e4fa648443ed1d17e251188) 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://github.com/hnaz/linux-mm/commit/da4561bd9c6b23e9579b85ffaced3f3b0b8dcd4c git remote add hnaz-mm https://github.com/hnaz/linux-mm git fetch --no-tags hnaz-mm master git checkout da4561bd9c6b23e9579b85ffaced3f3b0b8dcd4c # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kernel/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> arch/arm64/kernel/irq.c:44:11: error: use of undeclared identifier 'irq_shadow_call_stack_ptr' per_cpu(irq_shadow_call_stack_ptr, cpu) = ^ >> arch/arm64/kernel/irq.c:44:11: error: use of undeclared identifier 'irq_shadow_call_stack_ptr' >> arch/arm64/kernel/irq.c:44:11: error: use of undeclared identifier 'irq_shadow_call_stack_ptr' >> arch/arm64/kernel/irq.c:44:3: error: indirection requires pointer operand ('void' invalid) per_cpu(irq_shadow_call_stack_ptr, cpu) = ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/percpu-defs.h:269:28: note: expanded from macro 'per_cpu' #define per_cpu(var, cpu) (*per_cpu_ptr(&(var), cpu)) ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/irq.c:105:13: warning: no previous prototype for function 'init_IRQ' [-Wmissing-prototypes] void __init init_IRQ(void) ^ arch/arm64/kernel/irq.c:105:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void __init init_IRQ(void) ^ static 1 warning and 4 errors generated. vim +/irq_shadow_call_stack_ptr +44 arch/arm64/kernel/irq.c ac20ffbb0279aa Sami Tolvanen 2020-11-30 35 ac20ffbb0279aa Sami Tolvanen 2020-11-30 36 static void init_irq_scs(void) ac20ffbb0279aa Sami Tolvanen 2020-11-30 37 { ac20ffbb0279aa Sami Tolvanen 2020-11-30 38 int cpu; ac20ffbb0279aa Sami Tolvanen 2020-11-30 39 ac20ffbb0279aa Sami Tolvanen 2020-11-30 40 if (!IS_ENABLED(CONFIG_SHADOW_CALL_STACK)) ac20ffbb0279aa Sami Tolvanen 2020-11-30 41 return; ac20ffbb0279aa Sami Tolvanen 2020-11-30 42 ac20ffbb0279aa Sami Tolvanen 2020-11-30 43 for_each_possible_cpu(cpu) ac20ffbb0279aa Sami Tolvanen 2020-11-30 @44 per_cpu(irq_shadow_call_stack_ptr, cpu) = ac20ffbb0279aa Sami Tolvanen 2020-11-30 45 scs_alloc(cpu_to_node(cpu)); ac20ffbb0279aa Sami Tolvanen 2020-11-30 46 } ac20ffbb0279aa Sami Tolvanen 2020-11-30 47 :::::: The code at line 44 was first introduced by commit :::::: ac20ffbb0279aae7be48567fb734eae7d050769e arm64: scs: use vmapped IRQ and SDEI shadow stacks :::::: TO: Sami Tolvanen <samitolvanen@xxxxxxxxxx> :::::: CC: Will Deacon <will@xxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://01.org/lkp
