================================================================== BUG: KMSAN: uninit-value in accumulate_sum kernel/sched/fair.c:3146 [inline] BUG: KMSAN: uninit-value in ___update_load_sum kernel/sched/fair.c:3229 [inline] BUG: KMSAN: uninit-value in __update_load_avg_cfs_rq kernel/sched/fair.c:3308 [inline] BUG: KMSAN: uninit-value in update_cfs_rq_load_avg+0x1344/0x1aa0 kernel/sched/fair.c:3684 CPU: 1 PID: 8 Comm: rcu_sched Not tainted 4.16.0+ #87 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x185/0x1d0 lib/dump_stack.c:53 kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067 __msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:683 accumulate_sum kernel/sched/fair.c:3146 [inline] ___update_load_sum kernel/sched/fair.c:3229 [inline] __update_load_avg_cfs_rq kernel/sched/fair.c:3308 [inline] update_cfs_rq_load_avg+0x1344/0x1aa0 kernel/sched/fair.c:3684 update_load_avg+0xde6/0x2c20 kernel/sched/fair.c:3785 dequeue_entity kernel/sched/fair.c:4117 [inline] dequeue_task_fair+0x12f/0x2ea0 kernel/sched/fair.c:5266 dequeue_task kernel/sched/core.c:785 [inline] deactivate_task+0x50d/0x780 kernel/sched/core.c:801 __schedule+0x164/0x730 kernel/sched/core.c:3396 schedule+0x1cc/0x2f0 kernel/sched/core.c:3505 schedule_timeout+0x3e7/0x570 kernel/time/timer.c:1801 rcu_gp_kthread+0x21e1/0x38d0 kernel/rcu/tree.c:2230 kthread+0x539/0x720 kernel/kthread.c:239 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:406 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline] kmsan_save_stack mm/kmsan/kmsan.c:293 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:528 update_load_add kernel/sched/fair.c:138 [inline] account_entity_enqueue kernel/sched/fair.c:2659 [inline] enqueue_entity kernel/sched/fair.c:4036 [inline] enqueue_task_fair+0x15b1/0x43a0 kernel/sched/fair.c:5219 enqueue_task kernel/sched/core.c:774 [inline] activate_task kernel/sched/core.c:793 [inline] ttwu_activate kernel/sched/core.c:1664 [inline] ttwu_do_activate kernel/sched/core.c:1723 [inline] ttwu_queue kernel/sched/core.c:1868 [inline] try_to_wake_up+0x13cc/0x20a0 kernel/sched/core.c:2081 wake_up_process+0x34/0x40 kernel/sched/core.c:2154 swake_up_locked kernel/sched/swait.c:28 [inline] swake_up+0xfb/0x3b0 kernel/sched/swait.c:38 rcu_gp_kthread_wake kernel/rcu/tree.c:1786 [inline] rcu_report_qs_rsp kernel/rcu/tree.c:2365 [inline] rcu_report_qs_rnp+0x767/0x880 kernel/rcu/tree.c:2432 rcu_report_qs_rdp kernel/rcu/tree.c:2515 [inline] rcu_check_quiescent_state kernel/rcu/tree.c:2552 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2884 [inline] rcu_process_callbacks+0x7b0/0x2070 kernel/rcu/tree.c:2917 __do_softirq+0x56d/0x93d kernel/softirq.c:285 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline] kmsan_save_stack mm/kmsan/kmsan.c:293 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:528 update_load_add kernel/sched/fair.c:138 [inline] account_entity_enqueue kernel/sched/fair.c:2659 [inline] reweight_entity+0x1607/0x1a30 kernel/sched/fair.c:2809 update_cfs_group kernel/sched/fair.c:3006 [inline] entity_tick kernel/sched/fair.c:4324 [inline] task_tick_fair+0x5f1/0x1040 kernel/sched/fair.c:9452 scheduler_tick+0x28b/0x490 kernel/sched/core.c:3091 update_process_times+0x157/0x1a0 kernel/time/timer.c:1641 tick_sched_handle kernel/time/tick-sched.c:162 [inline] tick_sched_timer+0x33b/0x4b0 kernel/time/tick-sched.c:1194 __run_hrtimer kernel/time/hrtimer.c:1349 [inline] __hrtimer_run_queues+0xc03/0x15d0 kernel/time/hrtimer.c:1411 hrtimer_interrupt+0x426/0xaf0 kernel/time/hrtimer.c:1469 local_apic_timer_interrupt+0x66/0x230 arch/x86/kernel/apic/apic.c:1025 smp_apic_timer_interrupt+0x5a/0x90 arch/x86/kernel/apic/apic.c:1053 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline] kmsan_save_stack mm/kmsan/kmsan.c:293 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:528 update_load_set kernel/sched/fair.c:150 [inline] reweight_entity+0x126b/0x1a30 kernel/sched/fair.c:2795 update_cfs_group kernel/sched/fair.c:3006 [inline] entity_tick kernel/sched/fair.c:4324 [inline] task_tick_fair+0x5f1/0x1040 kernel/sched/fair.c:9452 scheduler_tick+0x28b/0x490 kernel/sched/core.c:3091 update_process_times+0x157/0x1a0 kernel/time/timer.c:1641 tick_sched_handle kernel/time/tick-sched.c:162 [inline] tick_sched_timer+0x33b/0x4b0 kernel/time/tick-sched.c:1194 __run_hrtimer kernel/time/hrtimer.c:1349 [inline] __hrtimer_run_queues+0xc03/0x15d0 kernel/time/hrtimer.c:1411 hrtimer_interrupt+0x426/0xaf0 kernel/time/hrtimer.c:1469 local_apic_timer_interrupt+0x66/0x230 arch/x86/kernel/apic/apic.c:1025 smp_apic_timer_interrupt+0x5a/0x90 arch/x86/kernel/apic/apic.c:1053 Local variable description: ----flags.i.i.i.i@_raw_spin_lock_irqsave Variable was created at: _raw_spin_lock_irqsave+0x45/0xf0 kernel/locking/spinlock.c:150 hrtimer_interrupt+0x101/0xaf0 kernel/time/hrtimer.c:1450 ==================================================================