Hi Petr, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on linus/master v6.8-rc4 next-20240215] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Petr-Tesarik/sbm-SandBox-Mode-core-data-types-and-functions/20240214-193528 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20240214113035.2117-5-petrtesarik%40huaweicloud.com patch subject: [PATCH v1 4/5] sbm: SandBox Mode KUnit test suite config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20240216/202402160357.4hi1ecdG-lkp@xxxxxxxxx/config) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 1c10821022f1799452065fb57474e894e2562b7f) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240216/202402160357.4hi1ecdG-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202402160357.4hi1ecdG-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> kernel/sbm_test.c:648:25: error: use of undeclared identifier 'current_stack_pointer' 648 | unsigned long old_sp = current_stack_pointer; | ^ kernel/sbm_test.c:651:2: error: use of undeclared identifier 'current_stack_pointer' 651 | current_stack_pointer = (unsigned long)end_of_stack(current); | ^ kernel/sbm_test.c:654:2: error: use of undeclared identifier 'current_stack_pointer' 654 | current_stack_pointer = old_sp; | ^ 3 errors generated. vim +/current_stack_pointer +648 kernel/sbm_test.c 645 646 static SBM_DEFINE_FUNC(stack_overflow) 647 { > 648 unsigned long old_sp = current_stack_pointer; 649 int err; 650 651 current_stack_pointer = (unsigned long)end_of_stack(current); 652 barrier(); 653 err = kaboom(); 654 current_stack_pointer = old_sp; 655 return err; 656 } 657 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki