* kernel/sched/idle.c:511:45: sparse: sparse: incorrect type in argument 1 (different address spaces)
@ 2026-09-17 18:50 kernel test robot
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From: kernel test robot @ 2026-09-17 18:50 UTC (permalink / raw)
To: Tejun Heo; +Cc: oe-kbuild-all, linux-kernel, Andrea Righi
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 9b87fdc9af2fbfcdb5c24a64139685ef80f6573f
commit: ca3aec453d64d2ad89156c10a2e1b15a93b9fe50 sched_ext: Route ops.update_idle() to sub-schedulers and re-notify owed scheds
date: 9 weeks ago
config: x86_64-randconfig-1300-20260917 (https://download.01.org/0day-ci/archive/20260918/202609180239.7Jr6Miwi-lkp@intel.com/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/20260918/202609180239.7Jr6Miwi-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
| Fixes: ca3aec453d64 ("sched_ext: Route ops.update_idle() to sub-schedulers and re-notify owed scheds")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609180239.7Jr6Miwi-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
kernel/sched/build_policy.c: note: in included file:
>> kernel/sched/idle.c:511:45: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct const *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/idle.c:511:45: sparse: expected struct task_struct const *p
kernel/sched/idle.c:511:45: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/build_policy.c: note: in included file:
kernel/sched/rt.c:2325:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/rt.c:2325:25: sparse: struct task_struct *
kernel/sched/rt.c:2325:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/rt.c:976:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/rt.c:976:39: sparse: expected struct task_struct *donor
kernel/sched/rt.c:976:39: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/rt.c:1498:31: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/rt.c:1498:31: sparse: expected struct task_struct *p
kernel/sched/rt.c:1498:31: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/rt.c:1826:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@
kernel/sched/rt.c:1826:9: sparse: expected struct sched_domain *[assigned] sd
kernel/sched/rt.c:1826:9: sparse: got struct sched_domain [noderef] __rcu *parent
kernel/sched/rt.c:1517:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu * @@
kernel/sched/rt.c:1517:14: sparse: expected struct task_struct *curr
kernel/sched/rt.c:1517:14: sparse: got struct task_struct [noderef] __rcu *
kernel/sched/rt.c:1518:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu * @@
kernel/sched/rt.c:1518:15: sparse: expected struct task_struct *donor
kernel/sched/rt.c:1518:15: sparse: got struct task_struct [noderef] __rcu *
kernel/sched/rt.c:1579:45: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/rt.c:1579:45: sparse: expected struct task_struct *p
kernel/sched/rt.c:1579:45: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/rt.c:1605:35: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/rt.c:1605:35: sparse: expected struct task_struct *p
kernel/sched/rt.c:1605:35: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/rt.c:1627:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/rt.c:1627:39: sparse: expected struct task_struct *donor
kernel/sched/rt.c:1627:39: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/rt.c:1652:64: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/rt.c:1652:64: sparse: expected struct task_struct *tsk
kernel/sched/rt.c:1652:64: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/rt.c:2002:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *task @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/rt.c:2002:40: sparse: expected struct task_struct *task
kernel/sched/rt.c:2002:40: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/rt.c:2025:13: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/rt.c:2025:13: sparse: struct task_struct *
kernel/sched/rt.c:2025:13: sparse: struct task_struct [noderef] __rcu *
kernel/sched/rt.c:2376:54: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/rt.c:2376:54: sparse: expected struct task_struct *tsk
kernel/sched/rt.c:2376:54: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/rt.c:2378:40: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/rt.c:2378:40: sparse: expected struct task_struct *p
kernel/sched/rt.c:2378:40: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/rt.c:2378:62: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/rt.c:2378:62: sparse: expected struct task_struct *p
kernel/sched/rt.c:2378:62: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/build_policy.c: note: in included file:
kernel/sched/cpudeadline.c:255:24: sparse: sparse: undefined identifier '__builtin_infer_alloc_token'
kernel/sched/cpudeadline.c:255:24: sparse: sparse: undefined identifier '__builtin_infer_alloc_token'
kernel/sched/cpudeadline.c:255:24: sparse: sparse: undefined identifier '__builtin_infer_alloc_token'
kernel/sched/build_policy.c: note: in included file:
kernel/sched/deadline.c:3151:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/deadline.c:3151:23: sparse: expected struct task_struct *p
kernel/sched/deadline.c:3151:23: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/deadline.c:3161:13: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/deadline.c:3161:13: sparse: struct task_struct *
kernel/sched/deadline.c:3161:13: sparse: struct task_struct [noderef] __rcu *
kernel/sched/deadline.c:3267:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/deadline.c:3267:25: sparse: struct task_struct *
kernel/sched/deadline.c:3267:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/deadline.c:2744:42: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_dl_entity const *b @@ got struct sched_dl_entity [noderef] __rcu * @@
kernel/sched/deadline.c:2744:42: sparse: expected struct sched_dl_entity const *b
kernel/sched/deadline.c:2744:42: sparse: got struct sched_dl_entity [noderef] __rcu *
kernel/sched/deadline.c:2754:38: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/deadline.c:2754:38: sparse: expected struct task_struct *tsk
kernel/sched/deadline.c:2754:38: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/deadline.c:1188:39: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/deadline.c:1188:39: sparse: expected struct task_struct *p
kernel/sched/deadline.c:1188:39: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/deadline.c:1188:85: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_dl_entity const *b @@ got struct sched_dl_entity [noderef] __rcu * @@
kernel/sched/deadline.c:1188:85: sparse: expected struct sched_dl_entity const *b
kernel/sched/deadline.c:1188:85: sparse: got struct sched_dl_entity [noderef] __rcu *
kernel/sched/deadline.c:1286:23: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/deadline.c:1286:23: sparse: expected struct task_struct *p
kernel/sched/deadline.c:1286:23: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/deadline.c:1815:31: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/deadline.c:1815:31: sparse: expected struct task_struct *p
kernel/sched/deadline.c:1815:31: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/deadline.c:1815:70: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct sched_dl_entity const *b @@ got struct sched_dl_entity [noderef] __rcu * @@
kernel/sched/deadline.c:1815:70: sparse: expected struct sched_dl_entity const *b
kernel/sched/deadline.c:1815:70: sparse: got struct sched_dl_entity [noderef] __rcu *
kernel/sched/deadline.c:2130:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/deadline.c:2130:39: sparse: expected struct task_struct *donor
kernel/sched/deadline.c:2130:39: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/deadline.c:2973:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@
kernel/sched/deadline.c:2973:9: sparse: expected struct sched_domain *[assigned] sd
kernel/sched/deadline.c:2973:9: sparse: got struct sched_domain [noderef] __rcu *parent
kernel/sched/deadline.c:2618:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu * @@
kernel/sched/deadline.c:2618:14: sparse: expected struct task_struct *curr
kernel/sched/deadline.c:2618:14: sparse: got struct task_struct [noderef] __rcu *
kernel/sched/deadline.c:2619:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu * @@
kernel/sched/deadline.c:2619:15: sparse: expected struct task_struct *donor
kernel/sched/deadline.c:2619:15: sparse: got struct task_struct [noderef] __rcu *
kernel/sched/deadline.c:2693:43: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/deadline.c:2693:43: sparse: expected struct task_struct *p
kernel/sched/deadline.c:2693:43: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/deadline.c:2713:35: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/deadline.c:2713:35: sparse: expected struct task_struct *p
vim +511 kernel/sched/idle.c
503
504 struct task_struct *pick_task_idle(struct rq *rq, struct rq_flags *rf)
505 {
506 /*
507 * Notify scx only on an idle-to-idle re-pick (the cpu was already idle).
508 * A real task->idle transition is delivered by set_next_task_idle(), so
509 * calling here too would duplicate it.
510 */
> 511 if (scx_enabled() && is_idle_task(rq->curr))
512 scx_update_idle(rq, true, false);
513 return rq->idle;
514 }
515
--
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https://github.com/intel/lkp-tests/wiki
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