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fmviesa005.fm.intel.com with ESMTP; 11 Jun 2026 18:11:05 -0700 Received: from kbuild by f0d55cb201f0 with local (Exim 4.98.2) (envelope-from ) id 1wXqQJ-00000000O6O-1ull; Fri, 12 Jun 2026 01:11:03 +0000 Date: Fri, 12 Jun 2026 09:10:13 +0800 From: kernel test robot To: Ingo Molnar Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org Subject: kernel/sched/rt.c:1571:45: sparse: sparse: incorrect type in argument 2 (different address spaces) Message-ID: <202606120900.a9u93sLd-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/torvalds/linux.git master head: 9716c086c8e8b141d35aa61f2e96a2e83de212a7 commit: 15125a229abc2404a264ce493e64a9ffa7850f6e sched/smp: Use the SMP version of the RT scheduling class date: 12 months ago config: x86_64-randconfig-123-20260610 (https://download.01.org/0day-ci/archive/20260612/202606120900.a9u93sLd-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/20260612/202606120900.a9u93sLd-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: 15125a229abc ("sched/smp: Use the SMP version of the RT scheduling class") | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202606120900.a9u93sLd-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) kernel/sched/build_policy.c: note: in included file: kernel/sched/rt.c:838:70: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/rt.c:838:70: sparse: struct task_struct [noderef] __rcu * kernel/sched/rt.c:838:70: sparse: struct task_struct * kernel/sched/rt.c:2289:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/rt.c:2289:25: sparse: struct task_struct * kernel/sched/rt.c:2289:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/rt.c:529:55: 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:529:55: sparse: expected struct task_struct *donor kernel/sched/rt.c:529:55: sparse: got struct task_struct [noderef] __rcu *donor 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:1490:31: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/rt.c:1490:31: sparse: expected struct task_struct *p kernel/sched/rt.c:1490:31: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/rt.c:1804:9: 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:1804:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/rt.c:1804:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/rt.c:1509:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu * @@ kernel/sched/rt.c:1509:14: sparse: expected struct task_struct *curr kernel/sched/rt.c:1509:14: sparse: got struct task_struct [noderef] __rcu * kernel/sched/rt.c:1510:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu * @@ kernel/sched/rt.c:1510:15: sparse: expected struct task_struct *donor kernel/sched/rt.c:1510:15: sparse: got struct task_struct [noderef] __rcu * >> kernel/sched/rt.c:1571:45: 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:1571:45: sparse: expected struct task_struct *p kernel/sched/rt.c:1571:45: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/rt.c:1613:39: 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:1613:39: sparse: expected struct task_struct *donor kernel/sched/rt.c:1613:39: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/rt.c:1632:64: 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:1632:64: sparse: expected struct task_struct *tsk kernel/sched/rt.c:1632:64: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/rt.c:1971:40: 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:1971:40: sparse: expected struct task_struct *task kernel/sched/rt.c:1971:40: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/rt.c:1994:13: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/rt.c:1994:13: sparse: struct task_struct * kernel/sched/rt.c:1994:13: sparse: struct task_struct [noderef] __rcu * kernel/sched/rt.c:2340:54: 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:2340:54: sparse: expected struct task_struct *tsk kernel/sched/rt.c:2340:54: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/rt.c:2342:40: 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:2342:40: sparse: expected struct task_struct *p kernel/sched/rt.c:2342:40: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/rt.c:2342:62: 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:2342:62: sparse: expected struct task_struct *p kernel/sched/rt.c:2342:62: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/build_policy.c: note: in included file: kernel/sched/deadline.c:2634:23: 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:2634:23: sparse: expected struct task_struct *p kernel/sched/deadline.c:2634:23: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/deadline.c:2644:13: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/deadline.c:2644:13: sparse: struct task_struct * kernel/sched/deadline.c:2644:13: sparse: struct task_struct [noderef] __rcu * kernel/sched/deadline.c:2750:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/deadline.c:2750:25: sparse: struct task_struct * kernel/sched/deadline.c:2750:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/deadline.c:2278:42: 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:2278:42: sparse: expected struct sched_dl_entity const *b kernel/sched/deadline.c:2278:42: sparse: got struct sched_dl_entity [noderef] __rcu * kernel/sched/deadline.c:2288:38: 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:2288:38: sparse: expected struct task_struct *tsk kernel/sched/deadline.c:2288:38: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/deadline.c:1197:39: 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:1197:39: sparse: expected struct task_struct *p kernel/sched/deadline.c:1197:39: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/deadline.c:1197:85: 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:1197:85: sparse: expected struct sched_dl_entity const *b kernel/sched/deadline.c:1197:85: sparse: got struct sched_dl_entity [noderef] __rcu * kernel/sched/deadline.c:1295:23: 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:1295:23: sparse: expected struct task_struct *p kernel/sched/deadline.c:1295:23: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/deadline.c:1604:31: 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:1604:31: sparse: expected struct task_struct *p kernel/sched/deadline.c:1604:31: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/deadline.c:1604:70: 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:1604:70: sparse: expected struct sched_dl_entity const *b kernel/sched/deadline.c:1604:70: sparse: got struct sched_dl_entity [noderef] __rcu * kernel/sched/deadline.c:1693:39: 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:1693:39: sparse: expected struct task_struct *donor kernel/sched/deadline.c:1693:39: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/deadline.c:2495:9: 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:2495:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/deadline.c:2495:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/deadline.c:2164:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu * @@ kernel/sched/deadline.c:2164:14: sparse: expected struct task_struct *curr kernel/sched/deadline.c:2164:14: sparse: got struct task_struct [noderef] __rcu * kernel/sched/deadline.c:2165:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *donor @@ got struct task_struct [noderef] __rcu * @@ kernel/sched/deadline.c:2165:15: sparse: expected struct task_struct *donor kernel/sched/deadline.c:2165:15: sparse: got struct task_struct [noderef] __rcu * kernel/sched/deadline.c:2240:43: 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:2240:43: sparse: expected struct task_struct *p kernel/sched/deadline.c:2240:43: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/deadline.c:2795:38: 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:2795:38: sparse: expected struct task_struct *tsk kernel/sched/deadline.c:2795:38: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/deadline.c:2797:23: 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:2797:23: sparse: expected struct task_struct *p kernel/sched/deadline.c:2797:23: sparse: got struct task_struct [noderef] __rcu *donor kernel/sched/deadline.c:2799:44: 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:2799:44: sparse: expected struct sched_dl_entity const *b kernel/sched/deadline.c:2799:44: sparse: got struct sched_dl_entity [noderef] __rcu * kernel/sched/deadline.c:2986:23: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/deadline.c:2986:23: sparse: struct task_struct [noderef] __rcu * kernel/sched/deadline.c:2986:23: sparse: struct task_struct * kernel/sched/build_policy.c: note: in included file: kernel/sched/syscalls.c:206:22: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/syscalls.c:206:22: sparse: struct task_struct [noderef] __rcu * kernel/sched/syscalls.c:206:22: sparse: struct task_struct * kernel/sched/build_policy.c: note: in included file: kernel/sched/sched.h:2235:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2235:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2235:25: sparse: struct task_struct * kernel/sched/sched.h:2235:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2235:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2235:25: sparse: struct task_struct * kernel/sched/sched.h:2235:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2235:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2235:25: sparse: struct task_struct * kernel/sched/sched.h:2246:26: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2246:26: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2246:26: sparse: struct task_struct * kernel/sched/sched.h:2235:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2235:25: sparse: struct task_struct [noderef] __rcu * vim +1571 kernel/sched/rt.c 7ebefa8ceefed4 kernel/sched_rt.c Dmitry Adamushko 2008-07-01 1567 7ebefa8ceefed4 kernel/sched_rt.c Dmitry Adamushko 2008-07-01 1568 static void check_preempt_equal_prio(struct rq *rq, struct task_struct *p) 7ebefa8ceefed4 kernel/sched_rt.c Dmitry Adamushko 2008-07-01 1569 { 4b53a3412d6663 kernel/sched/rt.c Ingo Molnar 2017-02-05 1570 if (rq->curr->nr_cpus_allowed == 1 || af0c8b2bf67b25 kernel/sched/rt.c Peter Zijlstra 2024-10-09 @1571 !cpupri_find(&rq->rd->cpupri, rq->donor, NULL)) 7ebefa8ceefed4 kernel/sched_rt.c Dmitry Adamushko 2008-07-01 1572 return; 7ebefa8ceefed4 kernel/sched_rt.c Dmitry Adamushko 2008-07-01 1573 308a623a40ce16 kernel/sched/rt.c Wanpeng Li 2014-10-31 1574 /* 308a623a40ce16 kernel/sched/rt.c Wanpeng Li 2014-10-31 1575 * p is migratable, so let's not schedule it and 308a623a40ce16 kernel/sched/rt.c Wanpeng Li 2014-10-31 1576 * see if it is pushed or pulled somewhere else. 308a623a40ce16 kernel/sched/rt.c Wanpeng Li 2014-10-31 1577 */ 804d402fb6f648 kernel/sched/rt.c Qais Yousef 2019-10-09 1578 if (p->nr_cpus_allowed != 1 && a1bd02e1f28b19 kernel/sched/rt.c Qais Yousef 2020-03-02 1579 cpupri_find(&rq->rd->cpupri, p, NULL)) 13b8bd0a5713bd kernel/sched_rt.c Rusty Russell 2009-03-25 1580 return; 24600ce89a819a kernel/sched_rt.c Rusty Russell 2008-11-25 1581 7ebefa8ceefed4 kernel/sched_rt.c Dmitry Adamushko 2008-07-01 1582 /* 97fb7a0a8944bd kernel/sched/rt.c Ingo Molnar 2018-03-03 1583 * There appear to be other CPUs that can accept 97fb7a0a8944bd kernel/sched/rt.c Ingo Molnar 2018-03-03 1584 * the current task but none can run 'p', so lets reschedule 97fb7a0a8944bd kernel/sched/rt.c Ingo Molnar 2018-03-03 1585 * to try and push the current task away: 7ebefa8ceefed4 kernel/sched_rt.c Dmitry Adamushko 2008-07-01 1586 */ 7ebefa8ceefed4 kernel/sched_rt.c Dmitry Adamushko 2008-07-01 1587 requeue_task_rt(rq, p, 1); 8875125efe8402 kernel/sched/rt.c Kirill Tkhai 2014-06-29 1588 resched_curr(rq); 7ebefa8ceefed4 kernel/sched_rt.c Dmitry Adamushko 2008-07-01 1589 } 7ebefa8ceefed4 kernel/sched_rt.c Dmitry Adamushko 2008-07-01 1590 :::::: The code at line 1571 was first introduced by commit :::::: af0c8b2bf67b25756f27644936e74fd9a6273bd2 sched: Split scheduler and execution contexts :::::: TO: Peter Zijlstra :::::: CC: Peter Zijlstra -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki