Hi, I love your patch! Perhaps something to improve: [auto build test WARNING on next-20220323] [cannot apply to arm64/for-next/core hnaz-mm/master linus/master v5.17 v5.17-rc8 v5.17-rc7 v5.17] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/andrey-konovalov-linux-dev/kasan-arm64-scs-stacktrace-collect-stack-traces-from-Shadow-Call-Stack/20220323-233436 base: b61581ae229d8eb9f21f8753be3f4011f7692384 config: arm64-defconfig (https://download.01.org/0day-ci/archive/20220324/202203241622.fKuBI2l5-lkp@xxxxxxxxx/config) compiler: aarch64-linux-gcc (GCC) 11.2.0 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://github.com/0day-ci/linux/commit/322e934f3c0bb04b4afb32207ba142153f1dd84e git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review andrey-konovalov-linux-dev/kasan-arm64-scs-stacktrace-collect-stack-traces-from-Shadow-Call-Stack/20220323-233436 git checkout 322e934f3c0bb04b4afb32207ba142153f1dd84e # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross 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 warnings (new ones prefixed by >>): arch/arm64/kernel/stacktrace.c: In function 'arch_stack_walk_shadow': arch/arm64/kernel/stacktrace.c:289:20: error: implicit declaration of function 'task_scs'; did you mean 'task_lock'? [-Werror=implicit-function-declaration] 289 | scs_base = task_scs(current); | ^~~~~~~~ | task_lock >> arch/arm64/kernel/stacktrace.c:289:18: warning: assignment to 'long unsigned int *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 289 | scs_base = task_scs(current); | ^ cc1: some warnings being treated as errors vim +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
