[android-common:android17-6.18-kminext 0/18] kernel/sched/fair.c:8997:14: sparse: sparse: incorrect type in assignment (different address spaces)

kernel test robot <[email protected]>
Newsgroups dev.linux.lists.oe-kbuild-all
Message-ID <[email protected]> 
tree:   https://android.googlesource.com/kernel/common android17-6.18-kminext
head:   e90350ec69a7f156c6eda15a13e6671cd731749d
commit: c5c86c524cdc66dfa5514855826d380b85ce7abd [0/18] FROMLIST: sched: Rework pick_next_task() and prev_balance() to avoid stale prev references
config: x86_64-randconfig-122-20260822 (https://download.01.org/0day-ci/archive/20260822/[email protected]/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260822/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

sparse warnings: (new ones prefixed by >>)
   kernel/sched/fair.c:1213:49: 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:1213:49: sparse:     expected struct task_struct *running
   kernel/sched/fair.c:1213:49: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/fair.c:1247:33: 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:1247:33: sparse:     expected struct sched_entity *se
   kernel/sched/fair.c:1247:33: sparse:     got struct sched_entity [noderef] __rcu *
   kernel/sched/fair.c:1305:34: 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:1305:34: sparse:     expected struct sched_entity const *se
   kernel/sched/fair.c:1305:34: sparse:     got struct sched_entity [noderef] __rcu *
   kernel/sched/fair.c:13025:9: 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:13025:9: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/fair.c:13025:9: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:7092:58: sparse: sparse: incorrect type in argument 2 (different address spaces) @@     expected struct task_struct *p @@     got struct task_struct [noderef] __rcu *curr @@
   kernel/sched/fair.c:7092:58: sparse:     expected struct task_struct *p
   kernel/sched/fair.c:7092:58: sparse:     got struct task_struct [noderef] __rcu *curr
   kernel/sched/fair.c:8494:20: 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:8494:20: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/fair.c:8494:20: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:8707:9: 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:8707:9: sparse:     expected struct sched_domain *[assigned] tmp
   kernel/sched/fair.c:8707:9: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:8849:39: 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:8849:39: sparse:     expected struct task_struct *donor
   kernel/sched/fair.c:8849:39: sparse:     got struct task_struct [noderef] __rcu *donor
   kernel/sched/fair.c:8883:37: 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:8883:37: sparse:     expected struct task_struct *tsk
   kernel/sched/fair.c:8883:37: sparse:     got struct task_struct [noderef] __rcu *curr
>> kernel/sched/fair.c:8997:14: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct task_struct *prev @@     got struct task_struct [noderef] __rcu *donor @@
   kernel/sched/fair.c:8997:14: sparse:     expected struct task_struct *prev
   kernel/sched/fair.c:8997:14: sparse:     got struct task_struct [noderef] __rcu *donor
   kernel/sched/fair.c:9117:38: 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:9117:38: sparse:     expected struct task_struct *curr
   kernel/sched/fair.c:9117:38: sparse:     got struct task_struct [noderef] __rcu *donor
   kernel/sched/fair.c:10176:40: 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:10176:40: sparse:     expected struct sched_domain *child
   kernel/sched/fair.c:10176:40: sparse:     got struct sched_domain [noderef] __rcu *child
   kernel/sched/fair.c:10804:22: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/fair.c:10804:22: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/fair.c:10804:22: sparse:    struct task_struct *
   kernel/sched/fair.c:12257:9: 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:12257:9: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/fair.c:12257:9: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:11906:44: 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:11906:44: sparse:     expected struct sched_domain *sd_parent
   kernel/sched/fair.c:11906:44: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:12371:9: 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:12371:9: sparse:     expected struct sched_domain *[assigned] sd
   kernel/sched/fair.c:12371:9: sparse:     got struct sched_domain [noderef] __rcu *parent
   kernel/sched/fair.c:6796:35: sparse: sparse: marked inline, but without a definition
   kernel/sched/fair.c: note: in included file:
   kernel/sched/sched.h:2532:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2532:9: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2532:9: sparse:    struct task_struct *
   kernel/sched/sched.h:2321:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2321:26: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2321:26: sparse:    struct task_struct *
   kernel/sched/sched.h:2310:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2310:25: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2310:25: sparse:    struct task_struct *
   kernel/sched/sched.h:2321:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2321:26: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2321:26: sparse:    struct task_struct *
   kernel/sched/sched.h:2321:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2321:26: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2321:26: sparse:    struct task_struct *
   kernel/sched/sched.h:2321:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
   kernel/sched/sched.h:2321:26: sparse:    struct task_struct [noderef] __rcu *
   kernel/sched/sched.h:2321:26: sparse:    struct task_struct *

vim +8997 kernel/sched/fair.c

  8984	
  8985	struct task_struct *
  8986	pick_next_task_fair(struct rq *rq, struct rq_flags *rf)
  8987	{
  8988		struct sched_entity *se;
  8989		struct task_struct *p, *prev;
  8990		int new_tasks;
  8991	
  8992	again:
  8993		/*
  8994		 * Re-read rq->donor at the top as it may have
  8995		 * changed across a rq lock drop
  8996		 */
> 8997		prev = rq->donor;
  8998		p = pick_task_fair(rq);
  8999		trace_android_rvh_replace_next_task_fair(rq, &p, prev);
  9000	
  9001		if (!p)
  9002			goto idle;
  9003		se = &p->se;
  9004	

--
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