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Message-ID: <202512111308.D5hqTn1p-lkp@intel.com>
Date: Thu, 11 Dec 2025 13:39:44 +0800
From: kernel test robot <lkp@...el.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Ingo Molnar <mingo@...nel.org>
Subject: kernel/sched/core.c:881:49: sparse: sparse: incorrect type in
argument 2 (different address spaces)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d358e5254674b70f34c847715ca509e46eb81e6f
commit: e38e5299747b23015b00b0109891815db44a2f30 sched/hrtick: Fix hrtick() vs. scheduling context
date: 5 days ago
config: nios2-randconfig-r121-20251211 (https://download.01.org/0day-ci/archive/20251211/202512111308.D5hqTn1p-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 9.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251211/202512111308.D5hqTn1p-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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512111308.D5hqTn1p-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> kernel/sched/core.c:881:49: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/core.c:881:49: sparse: expected struct task_struct *p
kernel/sched/core.c:881:49: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/core.c:1101:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:1101:38: sparse: expected struct task_struct *curr
kernel/sched/core.c:1101:38: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:2175:39: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/core.c:2175:39: sparse: expected struct task_struct *donor
kernel/sched/core.c:2175:39: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/core.c:2186:65: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:2186:65: sparse: expected struct task_struct *tsk
kernel/sched/core.c:2186:65: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:3583:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@
kernel/sched/core.c:3583:17: sparse: expected struct sched_domain *[assigned] sd
kernel/sched/core.c:3583:17: sparse: got struct sched_domain [noderef] __rcu *parent
kernel/sched/core.c:3788:36: 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/core.c:3788:36: sparse: expected struct task_struct const *p
kernel/sched/core.c:3788:36: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:5512:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/core.c:5512:15: sparse: expected struct task_struct *donor
kernel/sched/core.c:5512:15: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/core.c:6730:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *prev @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:6730:14: sparse: expected struct task_struct *prev
kernel/sched/core.c:6730:14: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:6797:37: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *prev @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/core.c:6797:37: sparse: expected struct task_struct *prev
kernel/sched/core.c:6797:37: sparse: got struct task_struct [noderef] __rcu *donor
kernel/sched/core.c:7303:17: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/core.c:7303:17: sparse: struct task_struct *
kernel/sched/core.c:7303:17: sparse: struct task_struct [noderef] __rcu *
kernel/sched/core.c:10207:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/core.c:10207:25: sparse: expected struct task_struct *p
kernel/sched/core.c:10207:25: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:632:6: sparse: sparse: context imbalance in 'raw_spin_rq_lock_nested' - wrong count at exit
kernel/sched/core.c:657:6: sparse: sparse: context imbalance in 'raw_spin_rq_trylock' - wrong count at exit
kernel/sched/core.c:683:9: sparse: sparse: context imbalance in 'raw_spin_rq_unlock' - unexpected unlock
kernel/sched/core.c: note: in included file:
kernel/sched/sched.h:1808:9: sparse: sparse: context imbalance in '__task_rq_lock' - wrong count at exit
kernel/sched/sched.h:1808:9: sparse: sparse: context imbalance in 'task_rq_lock' - wrong count at exit
kernel/sched/core.c: note: in included file:
kernel/sched/pelt.h:102:13: 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/pelt.h:102:13: sparse: expected struct task_struct const *p
kernel/sched/pelt.h:102:13: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/core.c:881:11: sparse: sparse: dereference of noderef expression
kernel/sched/core.c:2256:35: sparse: sparse: context imbalance in 'wait_task_inactive' - different lock contexts for basic block
kernel/sched/core.c: note: in included file:
kernel/sched/sched.h:2302:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2302:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2302:26: sparse: struct task_struct *
kernel/sched/sched.h:2291:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2291:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2291:25: sparse: struct task_struct *
kernel/sched/core.c:2170:38: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/core.c:2170:38: sparse: struct task_struct [noderef] __rcu *
kernel/sched/core.c:2170:38: sparse: struct task_struct const *
kernel/sched/sched.h:2302:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2302:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2302:26: sparse: struct task_struct *
kernel/sched/sched.h:2635:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2635:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2635:9: sparse: struct task_struct *
kernel/sched/sched.h:2635:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2635:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2635:9: sparse: struct task_struct *
kernel/sched/sched.h:2302:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2302:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2302:26: sparse: struct task_struct *
kernel/sched/sched.h:2302:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2302:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2302:26: sparse: struct task_struct *
kernel/sched/sched.h:2302:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2302:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2302:26: sparse: struct task_struct *
kernel/sched/sched.h:2612:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2612:9: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2612:9: sparse: struct task_struct *
vim +881 kernel/sched/core.c
867
868 /*
869 * High-resolution timer tick.
870 * Runs from hardirq context with interrupts disabled.
871 */
872 static enum hrtimer_restart hrtick(struct hrtimer *timer)
873 {
874 struct rq *rq = container_of(timer, struct rq, hrtick_timer);
875 struct rq_flags rf;
876
877 WARN_ON_ONCE(cpu_of(rq) != smp_processor_id());
878
879 rq_lock(rq, &rf);
880 update_rq_clock(rq);
> 881 rq->donor->sched_class->task_tick(rq, rq->donor, 1);
882 rq_unlock(rq, &rf);
883
884 return HRTIMER_NORESTART;
885 }
886
--
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https://github.com/intel/lkp-tests/wiki
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