tree: https://github.com/hnaz/linux-mm master head: 074b4ea9811e2c47ae1ecada177629c19fa56d59 commit: 8cdc580c5ca2ffecb0db4f84a99167ef763a21cc [29/122] arm64: implement stack_trace_save_shadow config: arm64-randconfig-r012-20220331 (https://download.01.org/0day-ci/archive/20220331/202203312049.zLjHyetm-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/8cdc580c5ca2ffecb0db4f84a99167ef763a21cc git remote add hnaz-mm https://github.com/hnaz/linux-mm git fetch --no-tags hnaz-mm master git checkout 8cdc580c5ca2ffecb0db4f84a99167ef763a21cc # 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 error/warnings (new ones prefixed by >>): >> arch/arm64/kernel/stacktrace.c:289:13: error: implicit declaration of function 'task_scs' is invalid in C99 [-Werror,-Wimplicit-function-declaration] scs_base = task_scs(current); ^ >> arch/arm64/kernel/stacktrace.c:289:11: warning: incompatible integer to pointer conversion assigning to 'unsigned long *' from 'int' [-Wint-conversion] scs_base = task_scs(current); ^ ~~~~~~~~~~~~~~~~~ 1 warning and 1 error generated. vim +/task_scs +289 arch/arm64/kernel/stacktrace.c 260 261 noinline notrace int arch_stack_walk_shadow(unsigned long *store, 262 unsigned int size, 263 unsigned int skipnr) 264 { 265 unsigned long *scs_top, *scs_base, *scs_next; 266 unsigned int len = 0, part; 267 268 preempt_disable(); 269 270 /* Get the SCS pointer. */ 271 asm volatile("mov %0, x18" : "=&r" (scs_top)); 272 273 /* The top SCS slot is empty. */ 274 scs_top -= 1; 275 276 /* Handle SDEI and hardirq frames. */ 277 for (part = 0; part < ARRAY_SIZE(scs_parts); part++) { 278 scs_next = *this_cpu_ptr(scs_parts[part].saved); 279 if (scs_next) { 280 scs_base = *this_cpu_ptr(scs_parts[part].base); 281 if (walk_shadow_stack_part(scs_top, scs_base, store, 282 size, &skipnr, &len)) 283 goto out; 284 scs_top = scs_next; 285 } 286 } 287 288 /* Handle task and softirq frames. */ > 289 scs_base = task_scs(current); -- 0-DAY CI Kernel Test Service https://01.org/lkp
