Hi Pavel, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on shuah-kselftest/next] [also build test WARNING on kees/for-next/execve tip/sched/core linus/master v6.0-rc4 next-20220909] [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/Pavel-Tikhomirov/Introduce-CABA-helper-process-tree/20220908-220639 base: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git next config: ia64-randconfig-s041-20220911 (https://download.01.org/0day-ci/archive/20220912/202209120356.YizhqUik-lkp@xxxxxxxxx/config) compiler: ia64-linux-gcc (GCC) 12.1.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-39-gce1a6720-dirty # https://github.com/intel-lab-lkp/linux/commit/17a897a33137d4f49f99c8be8d619f6f711fccdb git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Pavel-Tikhomirov/Introduce-CABA-helper-process-tree/20220908-220639 git checkout 17a897a33137d4f49f99c8be8d619f6f711fccdb # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=ia64 SHELL=/bin/bash arch/ia64/kernel/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) arch/ia64/kernel/mca.c:504:1: sparse: sparse: symbol 'search_mca_table' was not declared. Should it be static? arch/ia64/kernel/mca.c:607:1: sparse: sparse: symbol 'ia64_mca_register_cpev' was not declared. Should it be static? arch/ia64/kernel/mca.c:831:5: sparse: sparse: symbol 'ia64_mca_ucmc_extension' was not declared. Should it be static? arch/ia64/kernel/mca.c:1793:36: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct [noderef] __rcu *real_parent @@ got struct task_struct *group_leader @@ arch/ia64/kernel/mca.c:1793:36: sparse: expected struct task_struct [noderef] __rcu *real_parent arch/ia64/kernel/mca.c:1793:36: sparse: got struct task_struct *group_leader >> arch/ia64/kernel/mca.c:1796:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct [noderef] __rcu *caba @@ got struct task_struct *p @@ arch/ia64/kernel/mca.c:1796:17: sparse: expected struct task_struct [noderef] __rcu *caba arch/ia64/kernel/mca.c:1796:17: sparse: got struct task_struct *p arch/ia64/kernel/mca.c:2106:43: sparse: sparse: Using plain integer as NULL pointer vim +1796 arch/ia64/kernel/mca.c 1770 1771 /* Minimal format of the MCA/INIT stacks. The pseudo processes that run on 1772 * these stacks can never sleep, they cannot return from the kernel to user 1773 * space, they do not appear in a normal ps listing. So there is no need to 1774 * format most of the fields. 1775 */ 1776 1777 static void 1778 format_mca_init_stack(void *mca_data, unsigned long offset, 1779 const char *type, int cpu) 1780 { 1781 struct task_struct *p = (struct task_struct *)((char *)mca_data + offset); 1782 struct thread_info *ti; 1783 memset(p, 0, KERNEL_STACK_SIZE); 1784 ti = task_thread_info(p); 1785 ti->flags = _TIF_MCA_INIT; 1786 ti->preempt_count = 1; 1787 ti->task = p; 1788 ti->cpu = cpu; 1789 p->stack = ti; 1790 p->__state = TASK_UNINTERRUPTIBLE; 1791 cpumask_set_cpu(cpu, &p->cpus_mask); 1792 INIT_LIST_HEAD(&p->tasks); 1793 p->parent = p->real_parent = p->group_leader = p; 1794 INIT_LIST_HEAD(&p->children); 1795 INIT_LIST_HEAD(&p->sibling); > 1796 p->caba = p; 1797 INIT_LIST_HEAD(&p->cabds); 1798 INIT_LIST_HEAD(&p->cabd); 1799 strncpy(p->comm, type, sizeof(p->comm)-1); 1800 } 1801 -- 0-DAY CI Kernel Test Service https://01.org/lkp
