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orviesa004.jf.intel.com with ESMTP; 06 Jun 2026 11:28:52 -0700 Received: from kbuild by f0d55cb201f0 with local (Exim 4.98.2) (envelope-from ) id 1wVvlJ-00000000HDe-03e8; Sat, 06 Jun 2026 18:28:49 +0000 Date: Sun, 07 Jun 2026 02:27:58 +0800 From: kernel test robot To: Peter Zijlstra Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, x86@kernel.org, K Prateek Nayak Subject: [tip:sched/core 56/56] kernel/sched/fair.c:6905:44: sparse: sparse: incorrect type in argument 1 (different address spaces) Message-ID: <202606070217.eZYR9hdn-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core head: f666241e6bd5d9a494beca982e1953208dce531c commit: f666241e6bd5d9a494beca982e1953208dce531c [56/56] sched/fair: Unify cfs_rq throttling via account_cfs_rq_runtime() config: arc-randconfig-r123-20260606 (https://download.01.org/0day-ci/archive/20260607/202606070217.eZYR9hdn-lkp@intel.com/config) compiler: arc-linux-gcc (GCC) 8.5.0 sparse: v0.6.5-rc1 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260607/202606070217.eZYR9hdn-lkp@intel.com/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 | Closes: https://lore.kernel.org/oe-kbuild-all/202606070217.eZYR9hdn-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) kernel/sched/fair.c:1367:49: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *running @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/fair.c:1367:49: sparse: expected struct task_struct *running kernel/sched/fair.c:1367:49: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/fair.c:1979:33: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_entity *se @@ got struct sched_entity [noderef] __rcu * @@ kernel/sched/fair.c:1979:33: sparse: expected struct sched_entity *se kernel/sched/fair.c:1979:33: sparse: got struct sched_entity [noderef] __rcu * kernel/sched/fair.c:2035:34: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_entity const *se @@ got struct sched_entity [noderef] __rcu * @@ kernel/sched/fair.c:2035:34: sparse: expected struct sched_entity const *se kernel/sched/fair.c:2035:34: sparse: got struct sched_entity [noderef] __rcu * kernel/sched/fair.c:14397:9: 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:14397:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:14397:9: sparse: got struct sched_domain [noderef] __rcu *parent >> kernel/sched/fair.c:6905:44: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/fair.c:6905:44: sparse: expected struct task_struct *p kernel/sched/fair.c:6905:44: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/fair.c:6963:22: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/fair.c:6963:22: sparse: struct task_struct [noderef] __rcu * kernel/sched/fair.c:6963:22: sparse: struct task_struct * kernel/sched/fair.c:9373:20: 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:9373:20: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:9373:20: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:9568:9: 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:9568:9: sparse: expected struct sched_domain *[assigned] tmp kernel/sched/fair.c:9568:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:9766:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/fair.c:9766:39: sparse: expected struct task_struct *donor kernel/sched/fair.c:9766:39: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/fair.c:9799:37: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/fair.c:9799:37: sparse: expected struct task_struct *tsk kernel/sched/fair.c:9799:37: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/fair.c:10004:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *donor @@ kernel/sched/fair.c:10004:38: sparse: expected struct task_struct *curr kernel/sched/fair.c:10004:38: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/fair.c:11349:40: 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:11349:40: sparse: expected struct sched_domain *child kernel/sched/fair.c:11349:40: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/fair.c:12115:22: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/fair.c:12115:22: sparse: struct task_struct [noderef] __rcu * kernel/sched/fair.c:12115:22: sparse: struct task_struct * kernel/sched/fair.c:13633:9: 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:13633:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:13633:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:13264:44: 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:13264:44: sparse: expected struct sched_domain *sd_parent kernel/sched/fair.c:13264:44: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c:13769:9: 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:13769:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/fair.c:13769:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/fair.c: note: in included file: kernel/sched/sched.h:2462:26: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2462:26: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2462:26: sparse: struct task_struct * kernel/sched/sched.h:1423:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1423:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:1423:25: sparse: struct task_struct * kernel/sched/sched.h:1423:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1423:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:1423:25: sparse: struct task_struct * kernel/sched/sched.h:1423:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1423:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:1423:25: sparse: struct task_struct * kernel/sched/sched.h:1423:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1423:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:1423:25: sparse: struct task_struct * kernel/sched/sched.h:1423:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1423:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:1423:25: sparse: struct task_struct * kernel/sched/sched.h:1423:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1423:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:1423:25: sparse: struct task_struct * kernel/sched/sched.h:1423:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:1423:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:1423:25: sparse: struct task_struct * kernel/sched/sched.h:2462:26: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2462:26: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2462:26: sparse: struct task_struct * kernel/sched/sched.h:2451:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2451:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2451:25: sparse: struct task_struct * kernel/sched/sched.h:2462:26: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2462:26: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2462:26: sparse: struct task_struct * kernel/sched/fair.c: note: in included file (through arch/arc/include/asm/irqflags.h, include/linux/irqflags.h, arch/arc/include/asm/smp.h, arch/arc/include/asm/cmpxchg.h, ...): arch/arc/include/asm/irqflags-arcv2.h:80:31: sparse: sparse: undefined identifier '__builtin_arc_lr' arch/arc/include/asm/irqflags-arcv2.h:83:17: sparse: sparse: undefined identifier '__builtin_arc_sr' kernel/sched/fair.c: note: in included file: kernel/sched/sched.h:2462:26: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2462:26: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2462:26: sparse: struct task_struct * kernel/sched/sched.h:2462:26: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2462:26: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2462:26: sparse: struct task_struct * vim +6905 kernel/sched/fair.c 6844 6845 static bool throttle_cfs_rq(struct cfs_rq *cfs_rq) 6846 { 6847 struct cfs_bandwidth *cfs_b = tg_cfs_bandwidth(cfs_rq->tg); 6848 struct sched_entity *curr = cfs_rq->curr; 6849 struct rq *rq = rq_of(cfs_rq); 6850 6851 scoped_guard(raw_spinlock, &cfs_b->lock) { 6852 u64 target_runtime = 1; 6853 6854 /* 6855 * If cfs_rq->curr is still runnable, we are here from an 6856 * update_curr(). Request sysctl_sched_cfs_bandwidth_slice 6857 * worth of bandwidth to continue running. 6858 * 6859 * If the curr is not runnable, just request enough bandwidth 6860 * to be runnable next time the pick selects this cfs_rq. 6861 */ 6862 if (curr && curr->on_rq) 6863 target_runtime = sched_cfs_bandwidth_slice(); 6864 6865 /* 6866 * Check if We have raced with bandwidth becoming available. If 6867 * we actually throttled the timer might not unthrottle us for 6868 * an entire period. We additionally needed to make sure that 6869 * any subsequent check_cfs_rq_runtime calls agree not to 6870 * throttle us, as we may commit to do cfs put_prev+pick_next, 6871 * so we ask for 1ns of runtime rather than just check cfs_b. 6872 * 6873 * This will start the period timer if necessary. 6874 */ 6875 if (__assign_cfs_rq_runtime(cfs_b, cfs_rq, target_runtime)) 6876 return false; 6877 6878 /* 6879 * No bandwidth available; Add ourselves on the list to be 6880 * unthrottled later. 6881 */ 6882 list_add_tail_rcu(&cfs_rq->throttled_list, 6883 &cfs_b->throttled_cfs_rq); 6884 } 6885 6886 /* freeze hierarchy runnable averages while throttled */ 6887 scoped_guard(rcu) 6888 walk_tg_tree_from(cfs_rq->tg, tg_throttle_down, tg_nop, (void *)rq); 6889 6890 /* 6891 * Note: distribution will already see us throttled via the 6892 * throttled-list. rq->lock protects completion. 6893 */ 6894 cfs_rq->throttled = 1; 6895 WARN_ON_ONCE(cfs_rq->throttled_clock); 6896 6897 /* 6898 * If current hierarchy was throttled, add throttle work to the 6899 * current donor. In case of proxy-execution, the execution 6900 * context cannot exit to the userspace while holding a mutex 6901 * and the rule of throttle deferral to only throttle the 6902 * throttled context at exit to userspace is still preserved. 6903 */ 6904 if (curr && curr->on_rq) > 6905 task_throttle_setup_work(rq->donor); 6906 6907 return true; 6908 } 6909 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki