[tip:sched/core 12/60] kernel/sched/topology.c:2705:25: sparse: sparse: incorrect type in assignment (different address spaces)

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core
head:   c095741713d1bc317b53e2da2b222e7448b6021f
commit: fdfe5a8cd8731dd81840f26abfb6527edd27b0cb [12/60] sched/fair: Attach sched_domain_shared to sd_asym_cpucapacity
config: x86_64-randconfig-121-20260614 (https://download.01.org/0day-ci/archive/20260615/202606150436.N0vjqQrW-lkp@xxxxxxxxx/config)
compiler: clang version 22.1.3 (https://github.com/llvm/llvm-project e9846648fd6183ee6d8cbdb4502213fcf902a211)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260615/202606150436.N0vjqQrW-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/202606150436.N0vjqQrW-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
   kernel/sched/build_utility.c: note: in included file:
   kernel/sched/debug.c:730:17: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/debug.c:730:17: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/debug.c:730:17: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/debug.c:1071:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct task_struct *tsk @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/debug.c:1071:9: sparse:     expected struct task_struct *tsk
   kernel/sched/debug.c:1071:9: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/debug.c:1071:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct task_struct *tsk @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/debug.c:1071:9: sparse:     expected struct task_struct *tsk
   kernel/sched/debug.c:1071:9: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/build_utility.c: note: in included file:
   kernel/sched/stats.c:136:17: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/stats.c:136:17: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/stats.c:136:17: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/build_utility.c: note: in included file:
   kernel/sched/topology.c:116:56: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct sched_domain *sd @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/topology.c:116:56: sparse:     expected struct sched_domain *sd
   kernel/sched/topology.c:116:56: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/topology.c:135:60: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct sched_domain *sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:135:60: sparse:     expected struct sched_domain *sd
   kernel/sched/topology.c:135:60: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/topology.c:158:20: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:158:20: sparse:     expected struct sched_domain *sd
   kernel/sched/topology.c:158:20: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/topology.c:468:19: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct perf_domain *pd @@     got struct perf_domain [noderef] __rcu *pd @@
   kernel/sched/topology.c:468:19: sparse:     expected struct perf_domain *pd
   kernel/sched/topology.c:468:19: sparse:     got struct perf_domain [noderef] __rcu *pd
   kernel/sched/topology.c:643:49: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct sched_domain *parent @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:643:49: sparse:     expected struct sched_domain *parent
   kernel/sched/topology.c:643:49: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/topology.c:746:50: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct sched_domain *parent @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:746:50: sparse:     expected struct sched_domain *parent
   kernel/sched/topology.c:746:50: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/topology.c:761:55: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain [noderef] __rcu *[noderef] __rcu child @@     got struct sched_domain *[assigned] tmp @@
   kernel/sched/topology.c:761:55: sparse:     expected struct sched_domain [noderef] __rcu *[noderef] __rcu child
   kernel/sched/topology.c:761:55: sparse:     got struct sched_domain *[assigned] tmp
   kernel/sched/topology.c:774:29: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] tmp @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:774:29: sparse:     expected struct sched_domain *[assigned] tmp
   kernel/sched/topology.c:774:29: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/topology.c:779:20: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:779:20: sparse:     expected struct sched_domain *sd
   kernel/sched/topology.c:779:20: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/topology.c:800:13: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] tmp @@     got struct sched_domain [noderef] __rcu *sd @@
   kernel/sched/topology.c:800:13: sparse:     expected struct sched_domain *[assigned] tmp
   kernel/sched/topology.c:800:13: sparse:     got struct sched_domain [noderef] __rcu *sd
   kernel/sched/topology.c:964:70: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct sched_domain *sd @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/topology.c:964:70: sparse:     expected struct sched_domain *sd
   kernel/sched/topology.c:964:70: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/topology.c:993:59: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct sched_domain *sd @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/topology.c:993:59: sparse:     expected struct sched_domain *sd
   kernel/sched/topology.c:993:59: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/topology.c:1039:57: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct sched_domain *sd @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/topology.c:1039:57: sparse:     expected struct sched_domain *sd
   kernel/sched/topology.c:1039:57: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/topology.c:1041:25: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *sibling @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/topology.c:1041:25: sparse:     expected struct sched_domain *sibling
   kernel/sched/topology.c:1041:25: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/topology.c:1049:55: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct sched_domain *sd @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/topology.c:1049:55: sparse:     expected struct sched_domain *sd
   kernel/sched/topology.c:1049:55: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/topology.c:1051:25: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *sibling @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/topology.c:1051:25: sparse:     expected struct sched_domain *sibling
   kernel/sched/topology.c:1051:25: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/topology.c:1121:62: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected struct sched_domain *sd @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/topology.c:1121:62: sparse:     expected struct sched_domain *sd
   kernel/sched/topology.c:1121:62: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/topology.c:1225:40: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct sched_domain *child @@     got struct sched_domain [noderef] __rcu *child @@
   kernel/sched/topology.c:1225:40: sparse:     expected struct sched_domain *child
   kernel/sched/topology.c:1225:40: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/topology.c:1361:9: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:1361:9: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/topology.c:1361:9: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/topology.c:1618:52: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:1618:52: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/topology.c:1618:52: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/topology.c:1728:43: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected struct sched_domain [noderef] __rcu *child @@     got struct sched_domain *child @@
   kernel/sched/topology.c:1728:43: sparse:     expected struct sched_domain [noderef] __rcu *child
   kernel/sched/topology.c:1728:43: sparse:     got struct sched_domain *child
   kernel/sched/topology.c:2522:31: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain [noderef] __rcu *parent @@     got struct sched_domain *sd @@
   kernel/sched/topology.c:2522:31: sparse:     expected struct sched_domain [noderef] __rcu *parent
   kernel/sched/topology.c:2522:31: sparse:     got struct sched_domain *sd
   kernel/sched/topology.c:2650:16: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *parent @@     got struct sched_domain [noderef] __rcu *[noderef] __rcu parent @@
   kernel/sched/topology.c:2650:16: sparse:     expected struct sched_domain *parent
   kernel/sched/topology.c:2650:16: sparse:     got struct sched_domain [noderef] __rcu *[noderef] __rcu parent
   kernel/sched/topology.c:2652:24: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *parent @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:2652:24: sparse:     expected struct sched_domain *parent
   kernel/sched/topology.c:2652:24: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/topology.c:2657:16: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *parent @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:2657:16: sparse:     expected struct sched_domain *parent
   kernel/sched/topology.c:2657:16: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/topology.c:2662:24: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *parent @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:2662:24: sparse:     expected struct sched_domain *parent
   kernel/sched/topology.c:2662:24: sparse:     got struct sched_domain [noderef] __rcu *parent
>> kernel/sched/topology.c:2705:25: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd_asym @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:2705:25: sparse:     expected struct sched_domain *[assigned] sd_asym
   kernel/sched/topology.c:2705:25: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/topology.c:2759:57: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:2759:57: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/topology.c:2759:57: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/topology.c:2783:28: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:2783:28: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/topology.c:2783:28: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/topology.c:2809:57: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct sched_domain *[assigned] sd @@     got struct sched_domain [noderef] __rcu *parent @@
   kernel/sched/topology.c:2809:57: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/topology.c:2809:57: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/build_utility.c: note: in included file:
   kernel/sched/build_utility.c: note: in included file:
   kernel/sched/sched.h:2379:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2379:25: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2379:25: sparse:    struct task_struct *

vim +2705 kernel/sched/topology.c

  2679	
  2680	/*
  2681	 * For asymmetric CPU capacity, attach sched_domain_shared on the innermost
  2682	 * SD_ASYM_CPUCAPACITY_FULL ancestor of @cpu's base domain when that ancestor is
  2683	 * not an overlapping NUMA-built domain (then LLC should claim shared).
  2684	 *
  2685	 * A CPU may lack any FULL ancestor (e.g., exclusive cpuset symmetric island),
  2686	 * then LLC must claim shared instead.
  2687	 *
  2688	 * Note: SD_ASYM_CPUCAPACITY_FULL is only set when all CPU capacity values
  2689	 * are present in the domain span, so the asym domain we attach to cannot
  2690	 * degenerate into a single-capacity group. The relevant edge cases are instead
  2691	 * covered by the caveats above.
  2692	 *
  2693	 * Return true if this CPU's asym path claimed sd->shared, false otherwise.
  2694	 */
  2695	static bool claim_asym_sched_domain_shared(struct s_data *d, int cpu)
  2696	{
  2697		struct sched_domain *sd = *per_cpu_ptr(d->sd, cpu);
  2698		struct sched_domain *sd_asym;
  2699	
  2700		if (!sd)
  2701			return false;
  2702	
  2703		sd_asym = sd;
  2704		while (sd_asym && !(sd_asym->flags & SD_ASYM_CPUCAPACITY_FULL))
> 2705			sd_asym = sd_asym->parent;
  2706	
  2707		if (!sd_asym || (sd_asym->flags & SD_NUMA))
  2708			return false;
  2709	
  2710		init_sched_domain_shared(d, sd_asym);
  2711		return true;
  2712	}
  2713	

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