tree: https://git.kernel.org/pub/scm/linux/kernel/git/mel/linux.git sched-notarget-v1r15 head: a9ca7602387d3ed6aa80ccd5cc7e491709dbebae commit: 20791824e212ce10d7abfa7a6bcdad80f05ab376 [7/8] sched/fair: select idle cpu from idle cpumask for task wakeup config: ia64-randconfig-s031-20210715 (attached as .config) compiler: ia64-linux-gcc (GCC) 10.3.0 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: v0.6.3-341-g8af24329-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/mel/linux.git/commit/?id=... git remote add mel https://git.kernel.org/pub/scm/linux/kernel/git/mel/linux.git git fetch --no-tags mel sched-notarget-v1r15 git checkout 20791824e212ce10d7abfa7a6bcdad80f05ab376 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=ia64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) kernel/sched/fair.c:830:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_entity *se @@ got struct sched_entity [noderef] __rcu * @@ kernel/sched/fair.c:830:34: sparse: expected struct sched_entity *se kernel/sched/fair.c:830:34: sparse: got struct sched_entity [noderef] __rcu * kernel/sched/fair.c:10816:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/fair.c:10816:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:10816:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:4961:22: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/fair.c:4961:22: sparse: struct task_struct [noderef] __rcu * kernel/sched/fair.c:4961:22: sparse: struct task_struct * kernel/sched/fair.c:6783:20: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/fair.c:6783:20: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:6783:20: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:6917:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] tmp @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/fair.c:6917:9: sparse: expected struct sched_domain *[assigned] tmp kernel/sched/fair.c:6917:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:7053:12: sparse: expected struct sched_domain *sd kernel/sched/fair.c:7053:12: sparse: got struct sched_domain [noderef] __rcu * kernel/sched/fair.c:7150:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/fair.c:7150:38: sparse: expected struct task_struct *curr kernel/sched/fair.c:7150:38: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/fair.c:7434:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/fair.c:7434:38: sparse: expected struct task_struct *curr kernel/sched/fair.c:7434:38: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/fair.c:8419:40: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *child @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/fair.c:8419:40: sparse: expected struct sched_domain *child kernel/sched/fair.c:8419:40: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/fair.c:8867:22: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/fair.c:8867:22: sparse: struct task_struct [noderef] __rcu * kernel/sched/fair.c:8867:22: sparse: struct task_struct * kernel/sched/fair.c:10130:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/fair.c:10130:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:10130:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:9790:44: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *sd_parent @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/fair.c:9790:44: sparse: expected struct sched_domain *sd_parent kernel/sched/fair.c:9790:44: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:10202:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/fair.c:10202:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:10202:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:4626:31: sparse: sparse: marked inline, but without a definition kernel/sched/fair.c: note: in included file: kernel/sched/sched.h:2185:9: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2185:9: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2185:9: sparse: struct task_struct * kernel/sched/sched.h:2027:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2027:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2027:25: sparse: struct task_struct * kernel/sched/sched.h:2027:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2027:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2027:25: sparse: struct task_struct * vim +7053 kernel/sched/fair.c 7026 7027 /* 7028 * Update cpu idle state and record this information 7029 * in sd_llc_shared->idle_cpus_span. 7030 * 7031 * This function is called with interrupts disabled. 7032 */ 7033 void update_idle_cpumask(int cpu, bool idle) 7034 { 7035 struct sched_domain *sd; 7036 struct rq *rq = cpu_rq(cpu); 7037 int idle_state; 7038 7039 /* 7040 * Also set SCHED_IDLE cpu in idle cpumask to 7041 * allow SCHED_IDLE cpu as a wakeup target. 7042 */ 7043 idle_state = idle || sched_idle_cpu(cpu); 7044 /* 7045 * No need to update idle cpumask if the state 7046 * does not change. 7047 */ 7048 if (rq->last_idle_state == idle_state) 7049 return; 7050 /* 7051 * Called with irq disabled, rcu protection is not needed. 7052 */ 7054 if (unlikely(!sd)) 7055 return; 7056 7057 if (idle_state) 7058 cpumask_set_cpu(cpu, sds_idle_cpus(sd->shared)); 7059 else 7060 cpumask_clear_cpu(cpu, sds_idle_cpus(sd->shared)); 7061 7062 rq->last_idle_state = idle_state; 7063 } 7064 #endif /* CONFIG_SMP */ 7065 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org