From: kernel test robot <lkp@intel.com>
To: Tejun Heo <tj@kernel.org>
Cc: oe-kbuild-all@lists.linux.dev
Subject: [tj-sched-ext:scx-sub-caps-v5 43/61] kernel/sched/ext/sub.c:335:30: sparse: sparse: incorrect type in argument 1 (different address spaces)
Date: Sun, 12 Jul 2026 04:52:24 +0800 [thread overview]
Message-ID: <202607120412.0mohEapw-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext.git scx-sub-caps-v5
head: c51c3642e76ea3b627413ecb76f893f1289cf4ae
commit: 08a65d9166c3c4df920a654a332fd5a1f8d6006c [43/61] sched_ext: Maintain per-cpu effective cap copies for single-read checks
config: arm64-randconfig-r132-20260711 (https://download.01.org/0day-ci/archive/20260712/202607120412.0mohEapw-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 10.5.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260712/202607120412.0mohEapw-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202607120412.0mohEapw-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
kernel/sched/ext/ext.c:2603:33: sparse: expected struct scx_sched *sch
kernel/sched/ext/ext.c:2603:33: sparse: got struct scx_sched [noderef] __rcu *[addressable] [toplevel] scx_root
kernel/sched/ext/ext.c:2755:33: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct scx_sched *sch @@ got struct scx_sched [noderef] __rcu *[addressable] [toplevel] scx_root @@
kernel/sched/ext/ext.c:2755:33: sparse: expected struct scx_sched *sch
kernel/sched/ext/ext.c:2755:33: sparse: got struct scx_sched [noderef] __rcu *[addressable] [toplevel] scx_root
kernel/sched/ext/ext.c:2902:38: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct task_struct *prev @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/ext/ext.c:2902:38: sparse: expected struct task_struct *prev
kernel/sched/ext/ext.c:2902:38: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/ext/ext.c:3133:33: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct scx_sched *sch @@ got struct scx_sched [noderef] __rcu *[addressable] [toplevel] scx_root @@
kernel/sched/ext/ext.c:3133:33: sparse: expected struct scx_sched *sch
kernel/sched/ext/ext.c:3133:33: sparse: got struct scx_sched [noderef] __rcu *[addressable] [toplevel] scx_root
kernel/sched/ext/ext.c:3545:62: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct scx_sched *sch @@ got struct scx_sched [noderef] __rcu *scx_sched @@
kernel/sched/ext/ext.c:3545:62: sparse: expected struct scx_sched *sch
kernel/sched/ext/ext.c:3545:62: sparse: got struct scx_sched [noderef] __rcu *scx_sched
kernel/sched/ext/ext.c:6169:57: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct task_struct const *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/ext/ext.c:6169:57: sparse: expected struct task_struct const *p
kernel/sched/ext/ext.c:6169:57: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/ext/ext.c:6170:51: sparse: sparse: incorrect type in argument 5 (different address spaces) @@ expected struct task_struct *p @@ got struct task_struct [noderef] __rcu *curr @@
kernel/sched/ext/ext.c:6170:51: sparse: expected struct task_struct *p
kernel/sched/ext/ext.c:6170:51: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/ext/ext.c:7663:32: 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/ext/ext.c:7663:32: sparse: expected struct task_struct const *p
kernel/sched/ext/ext.c:7663:32: sparse: got struct task_struct [noderef] __rcu *curr
kernel/sched/ext/ext.c:9019:18: sparse: sparse: symbol 'scx_bpf_reenqueue_local___v2' was not declared. Should it be static?
kernel/sched/ext/ext.c:9464:33: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/ext/ext.c:9464:33: sparse: struct task_struct [noderef] __rcu *
kernel/sched/ext/ext.c:9464:33: sparse: struct task_struct const *
kernel/sched/build_policy.c: note: in included file:
kernel/sched/build_policy.c: note: in included file:
kernel/sched/ext/idle.c:751:33: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct scx_sched *sch @@ got struct scx_sched [noderef] __rcu *[addressable] [assigned] [toplevel] scx_root @@
kernel/sched/ext/idle.c:771:49: 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/build_policy.c: note: in included file:
>> kernel/sched/ext/sub.c:335:30: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct scx_sched *sch @@ got struct scx_sched [noderef] __rcu *[addressable] [assigned] [toplevel] scx_root @@
kernel/sched/ext/sub.c:624:40: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct scx_sched *parent @@ got struct scx_sched [noderef] __rcu *scx_sched @@
kernel/sched/ext/sub.c:971:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct scx_sched *sch @@ got struct scx_sched [noderef] __rcu *scx_sched @@
kernel/sched/build_policy.c: note: in included file:
kernel/sched/syscalls.c:1418:22: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct task_struct *curr @@ got struct task_struct [noderef] __rcu *donor @@
kernel/sched/build_policy.c: note: in included file:
kernel/sched/rt.c:1313:23: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/rt.c:1313:23: sparse: struct task_struct *
kernel/sched/rt.c:1313:23: sparse: struct task_struct [noderef] __rcu *
kernel/sched/build_policy.c: note: in included file:
kernel/sched/sched.h:2453:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2453:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2453:25: sparse: struct task_struct *
kernel/sched/sched.h:2453:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2453:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2453:25: sparse: struct task_struct *
kernel/sched/sched.h:2464:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2464:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2464:26: sparse: struct task_struct *
kernel/sched/sched.h:2453:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2453:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2453:25: sparse: struct task_struct *
kernel/sched/sched.h:2464:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2464:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2464:26: sparse: struct task_struct *
kernel/sched/sched.h:1425:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:1425:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:1425:25: sparse: struct task_struct *
kernel/sched/build_policy.c: note: in included file:
kernel/sched/deadline.c:2339:15: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/deadline.c:2339:15: sparse: struct task_struct *
kernel/sched/deadline.c:2339:15: sparse: struct task_struct [noderef] __rcu *
kernel/sched/build_policy.c: note: in included file:
kernel/sched/sched.h:2453:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2453:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2453:25: sparse: struct task_struct *
kernel/sched/sched.h:2453:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2453:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2453:25: sparse: struct task_struct *
kernel/sched/sched.h:2464:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2464:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2464:26: sparse: struct task_struct *
kernel/sched/sched.h:2464:26: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2464:26: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2464:26: sparse: struct task_struct *
kernel/sched/sched.h:2453:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2453:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2453:25: sparse: struct task_struct *
kernel/sched/sched.h:2453:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2453:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2453:25: sparse: struct task_struct *
kernel/sched/sched.h:2453:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:2453:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:2453:25: sparse: struct task_struct *
kernel/sched/sched.h:1425:25: sparse: sparse: incompatible types in comparison expression (different address spaces):
kernel/sched/sched.h:1425:25: sparse: struct task_struct [noderef] __rcu *
kernel/sched/sched.h:1425:25: sparse: struct task_struct *
kernel/sched/build_policy.c: note: in included file:
kernel/sched/syscalls.c:1343:11: sparse: sparse: dereference of noderef expression
kernel/sched/build_policy.c: note: in included file:
kernel/sched/rt.c:1676:15: sparse: sparse: dereference of noderef expression
vim +335 kernel/sched/ext/sub.c
310
311 /**
312 * queue_sync_ecaps - Queue ecaps update for a (sch, cid) pair
313 * @sch: sched to update
314 * @cid: cid to update
315 *
316 * Queue an ecaps update for @sch's @cid and kick the cpu so that it syncs in
317 * balance_one().
318 */
319 static void queue_sync_ecaps(struct scx_sched *sch, s32 cid)
320 {
321 s32 cpu = __scx_cid_to_cpu(cid);
322 struct scx_sched_pcpu *pcpu = per_cpu_ptr(sch->pcpu, cpu);
323
324 /*
325 * Pairs with smp_mb() in scx_process_sync_ecaps(). Either the check
326 * below sees the node off the list and queues it, or the in-flight sync
327 * sees the caps[] update made before this call.
328 */
329 smp_mb();
330
331 /* @cid's pshard->lock excludes concurrent queueing attempts */
332 if (llist_on_list(&pcpu->ecaps_to_sync_node))
333 return;
334 if (llist_add(&pcpu->ecaps_to_sync_node, &cpu_rq(cpu)->scx.ecaps_to_sync))
> 335 scx_kick_cpu(scx_root, cpu, 0);
336 }
337
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-07-11 20:52 UTC|newest]
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