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orviesa002.jf.intel.com with ESMTP; 13 Apr 2026 07:48:09 -0700 Received: from kbuild by 7b0b59b3a0d4 with local (Exim 4.98.2) (envelope-from ) id 1wCIa6-000000000ax-0z1i; Mon, 13 Apr 2026 14:48:06 +0000 Date: Mon, 13 Apr 2026 22:47:45 +0800 From: kernel test robot To: K Prateek Nayak Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, x86@kernel.org, Peter Zijlstra , Dietmar Eggemann Subject: [tip:sched/core 2/14] kernel/sched/topology.c:2604:16: sparse: sparse: incorrect type in assignment (different address spaces) Message-ID: <202604132237.KvYYVxjN-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: Hi Prateek, FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git sched/core head: 78cde54ea5f03398f1cf6656de2472068f6da966 commit: 5a7b576b3ec1acc2694c5b58f80cd1d44a11b2c1 [2/14] sched/topology: Extract "imb_numa_nr" calculation into a separate helper config: um-randconfig-r132-20260413 (https://download.01.org/0day-ci/archive/20260413/202604132237.KvYYVxjN-lkp@intel.com/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/20260413/202604132237.KvYYVxjN-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202604132237.KvYYVxjN-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) kernel/sched/build_utility.c: note: in included file: kernel/sched/debug.c:730:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/debug.c:730:17: sparse: expected struct sched_domain *[assigned] sd kernel/sched/debug.c:730:17: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/debug.c:1069:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/debug.c:1069:9: sparse: expected struct task_struct *tsk kernel/sched/debug.c:1069:9: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/debug.c:1069:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct task_struct *tsk @@ got struct task_struct [noderef] __rcu *curr @@ kernel/sched/debug.c:1069:9: sparse: expected struct task_struct *tsk kernel/sched/debug.c:1069:9: sparse: got struct task_struct [noderef] __rcu *curr kernel/sched/build_utility.c: note: in included file: kernel/sched/stats.c:136:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/stats.c:136:17: sparse: expected struct sched_domain *[assigned] sd kernel/sched/stats.c:136:17: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/build_utility.c: note: in included file: kernel/sched/topology.c:116:56: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:116:56: sparse: expected struct sched_domain *sd kernel/sched/topology.c:116:56: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:135:60: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:135:60: sparse: expected struct sched_domain *sd kernel/sched/topology.c:135:60: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:158:20: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:158:20: sparse: expected struct sched_domain *sd kernel/sched/topology.c:158:20: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:469:19: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct perf_domain *pd @@ got struct perf_domain [noderef] __rcu *pd @@ kernel/sched/topology.c:469:19: sparse: expected struct perf_domain *pd kernel/sched/topology.c:469:19: sparse: got struct perf_domain [noderef] __rcu *pd kernel/sched/topology.c:644:49: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *parent @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:644:49: sparse: expected struct sched_domain *parent kernel/sched/topology.c:644:49: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:729:50: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *parent @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:729:50: sparse: expected struct sched_domain *parent kernel/sched/topology.c:729:50: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:737:55: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain [noderef] __rcu *[noderef] __rcu child @@ got struct sched_domain *[assigned] tmp @@ kernel/sched/topology.c:737:55: sparse: expected struct sched_domain [noderef] __rcu *[noderef] __rcu child kernel/sched/topology.c:737:55: sparse: got struct sched_domain *[assigned] tmp kernel/sched/topology.c:750:29: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] tmp @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:750:29: sparse: expected struct sched_domain *[assigned] tmp kernel/sched/topology.c:750:29: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:755:20: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:755:20: sparse: expected struct sched_domain *sd kernel/sched/topology.c:755:20: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:776:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] tmp @@ got struct sched_domain [noderef] __rcu *sd @@ kernel/sched/topology.c:776:13: sparse: expected struct sched_domain *[assigned] tmp kernel/sched/topology.c:776:13: sparse: got struct sched_domain [noderef] __rcu *sd kernel/sched/topology.c:938:70: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:938:70: sparse: expected struct sched_domain *sd kernel/sched/topology.c:938:70: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:967:59: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:967:59: sparse: expected struct sched_domain *sd kernel/sched/topology.c:967:59: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1013:57: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:1013:57: sparse: expected struct sched_domain *sd kernel/sched/topology.c:1013:57: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1015:25: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sibling @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:1015:25: sparse: expected struct sched_domain *sibling kernel/sched/topology.c:1015:25: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1023:55: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:1023:55: sparse: expected struct sched_domain *sd kernel/sched/topology.c:1023:55: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1025:25: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *sibling @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:1025:25: sparse: expected struct sched_domain *sibling kernel/sched/topology.c:1025:25: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1095:62: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sched_domain *sd @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:1095:62: sparse: expected struct sched_domain *sd kernel/sched/topology.c:1095:62: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1199:40: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain *child @@ got struct sched_domain [noderef] __rcu *child @@ kernel/sched/topology.c:1199:40: sparse: expected struct sched_domain *child kernel/sched/topology.c:1199:40: sparse: got struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1337:9: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:1337:9: sparse: expected struct sched_domain *[assigned] sd kernel/sched/topology.c:1337:9: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:1692:43: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected struct sched_domain [noderef] __rcu *child @@ got struct sched_domain *child @@ kernel/sched/topology.c:1692:43: sparse: expected struct sched_domain [noderef] __rcu *child kernel/sched/topology.c:1692:43: sparse: got struct sched_domain *child kernel/sched/topology.c:2476:31: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain [noderef] __rcu *parent @@ got struct sched_domain *sd @@ kernel/sched/topology.c:2476:31: sparse: expected struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:2476:31: sparse: got struct sched_domain *sd >> kernel/sched/topology.c:2604:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *parent @@ got struct sched_domain [noderef] __rcu *[noderef] __rcu parent @@ kernel/sched/topology.c:2604:16: sparse: expected struct sched_domain *parent kernel/sched/topology.c:2604:16: sparse: got struct sched_domain [noderef] __rcu *[noderef] __rcu parent >> kernel/sched/topology.c:2606:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *parent @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:2606:24: sparse: expected struct sched_domain *parent kernel/sched/topology.c:2606:24: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:2611:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *parent @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:2611:16: sparse: expected struct sched_domain *parent kernel/sched/topology.c:2611:16: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:2616:24: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *parent @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:2616:24: sparse: expected struct sched_domain *parent kernel/sched/topology.c:2616:24: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:2665:57: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:2665:57: sparse: expected struct sched_domain *[assigned] sd kernel/sched/topology.c:2665:57: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:2684:28: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:2684:28: sparse: expected struct sched_domain *[assigned] sd kernel/sched/topology.c:2684:28: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/topology.c:2699:57: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct sched_domain *[assigned] sd @@ got struct sched_domain [noderef] __rcu *parent @@ kernel/sched/topology.c:2699:57: sparse: expected struct sched_domain *[assigned] sd kernel/sched/topology.c:2699:57: sparse: got struct sched_domain [noderef] __rcu *parent kernel/sched/build_utility.c: note: in included file: kernel/sched/build_utility.c: note: in included file: kernel/sched/sched.h:2367:25: sparse: sparse: incompatible types in comparison expression (different address spaces): kernel/sched/sched.h:2367:25: sparse: struct task_struct [noderef] __rcu * kernel/sched/sched.h:2367:25: sparse: struct task_struct * vim +2604 kernel/sched/topology.c 2551 2552 /* 2553 * Calculate an allowed NUMA imbalance such that LLCs do not get 2554 * imbalanced. 2555 */ 2556 static void adjust_numa_imbalance(struct sched_domain *sd_llc) 2557 { 2558 struct sched_domain *parent; 2559 unsigned int imb_span = 1; 2560 unsigned int imb = 0; 2561 unsigned int nr_llcs; 2562 2563 WARN_ON(!(sd_llc->flags & SD_SHARE_LLC)); 2564 WARN_ON(!sd_llc->parent); 2565 2566 /* 2567 * For a single LLC per node, allow an 2568 * imbalance up to 12.5% of the node. This is 2569 * arbitrary cutoff based two factors -- SMT and 2570 * memory channels. For SMT-2, the intent is to 2571 * avoid premature sharing of HT resources but 2572 * SMT-4 or SMT-8 *may* benefit from a different 2573 * cutoff. For memory channels, this is a very 2574 * rough estimate of how many channels may be 2575 * active and is based on recent CPUs with 2576 * many cores. 2577 * 2578 * For multiple LLCs, allow an imbalance 2579 * until multiple tasks would share an LLC 2580 * on one node while LLCs on another node 2581 * remain idle. This assumes that there are 2582 * enough logical CPUs per LLC to avoid SMT 2583 * factors and that there is a correlation 2584 * between LLCs and memory channels. 2585 */ 2586 nr_llcs = sd_llc->parent->span_weight / sd_llc->span_weight; 2587 if (nr_llcs == 1) 2588 imb = sd_llc->parent->span_weight >> 3; 2589 else 2590 imb = nr_llcs; 2591 2592 imb = max(1U, imb); 2593 sd_llc->parent->imb_numa_nr = imb; 2594 2595 /* 2596 * Set span based on the first NUMA domain. 2597 * 2598 * NUMA systems always add a NODE domain before 2599 * iterating the NUMA domains. Since this is before 2600 * degeneration, start from sd_llc's parent's 2601 * parent which is the lowest an SD_NUMA domain can 2602 * be relative to sd_llc. 2603 */ > 2604 parent = sd_llc->parent->parent; 2605 while (parent && !(parent->flags & SD_NUMA)) > 2606 parent = parent->parent; 2607 2608 imb_span = parent ? parent->span_weight : sd_llc->parent->span_weight; 2609 2610 /* Update the upper remainder of the topology */ 2611 parent = sd_llc->parent; 2612 while (parent) { 2613 int factor = max(1U, (parent->span_weight / imb_span)); 2614 2615 parent->imb_numa_nr = imb * factor; 2616 parent = parent->parent; 2617 } 2618 } 2619 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki