================================================================== BUG: KMSAN: uninit-value in accumulate_sum kernel/sched/fair.c:3131 [inline] BUG: KMSAN: uninit-value in ___update_load_sum kernel/sched/fair.c:3214 [inline] BUG: KMSAN: uninit-value in __update_load_avg_cfs_rq kernel/sched/fair.c:3320 [inline] BUG: KMSAN: uninit-value in update_cfs_rq_load_avg+0x1370/0x1aa0 kernel/sched/fair.c:3696 CPU: 0 PID: 1727 Comm: kworker/0:1H Not tainted 4.17.0+ #17 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x185/0x1d0 lib/dump_stack.c:113 kmsan_report+0x188/0x2a0 mm/kmsan/kmsan.c:1368 __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:634 accumulate_sum kernel/sched/fair.c:3131 [inline] ___update_load_sum kernel/sched/fair.c:3214 [inline] __update_load_avg_cfs_rq kernel/sched/fair.c:3320 [inline] update_cfs_rq_load_avg+0x1370/0x1aa0 kernel/sched/fair.c:3696 update_load_avg+0xe50/0x2cc0 kernel/sched/fair.c:3797 dequeue_entity kernel/sched/fair.c:4257 [inline] dequeue_task_fair+0x13f/0x3300 kernel/sched/fair.c:5407 dequeue_task kernel/sched/core.c:762 [inline] deactivate_task+0x560/0x7d0 kernel/sched/core.c:778 __schedule+0x164/0x770 kernel/sched/core.c:3474 schedule+0x1cc/0x2f0 kernel/sched/core.c:3568 worker_thread+0x1d03/0x24f0 kernel/workqueue.c:2300 kthread+0x4db/0x6c0 kernel/kthread.c:241 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:415 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:287 [inline] kmsan_save_stack mm/kmsan/kmsan.c:302 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:692 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:478 update_load_sub kernel/sched/fair.c:129 [inline] account_entity_dequeue kernel/sched/fair.c:2661 [inline] reweight_entity+0x1456/0x1a30 kernel/sched/fair.c:2774 update_cfs_group kernel/sched/fair.c:2991 [inline] dequeue_task_fair+0x2e12/0x3300 kernel/sched/fair.c:5442 dequeue_task kernel/sched/core.c:762 [inline] deactivate_task+0x560/0x7d0 kernel/sched/core.c:778 detach_task kernel/sched/fair.c:7396 [inline] detach_tasks kernel/sched/fair.c:7484 [inline] load_balance+0x615c/0x88f0 kernel/sched/fair.c:8843 rebalance_domains+0x77d/0xe30 kernel/sched/fair.c:9221 run_rebalance_domains+0x2d1/0x320 kernel/sched/fair.c:9843 __do_softirq+0x592/0x979 kernel/softirq.c:285 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:287 [inline] kmsan_save_stack mm/kmsan/kmsan.c:302 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:692 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:478 update_load_sub kernel/sched/fair.c:129 [inline] account_entity_dequeue kernel/sched/fair.c:2661 [inline] dequeue_entity kernel/sched/fair.c:4267 [inline] dequeue_task_fair+0x14ea/0x3300 kernel/sched/fair.c:5407 dequeue_task kernel/sched/core.c:762 [inline] deactivate_task+0x560/0x7d0 kernel/sched/core.c:778 detach_task kernel/sched/fair.c:7396 [inline] detach_tasks kernel/sched/fair.c:7484 [inline] load_balance+0x615c/0x88f0 kernel/sched/fair.c:8843 rebalance_domains+0x77d/0xe30 kernel/sched/fair.c:9221 run_rebalance_domains+0x2d1/0x320 kernel/sched/fair.c:9843 __do_softirq+0x592/0x979 kernel/softirq.c:285 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:287 [inline] kmsan_save_stack mm/kmsan/kmsan.c:302 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:692 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:478 update_load_add kernel/sched/fair.c:123 [inline] account_entity_enqueue kernel/sched/fair.c:2644 [inline] reweight_entity+0x1610/0x1a30 kernel/sched/fair.c:2794 update_cfs_group kernel/sched/fair.c:2991 [inline] dequeue_task_fair+0x2e12/0x3300 kernel/sched/fair.c:5442 dequeue_task kernel/sched/core.c:762 [inline] deactivate_task+0x560/0x7d0 kernel/sched/core.c:778 detach_task kernel/sched/fair.c:7396 [inline] detach_tasks kernel/sched/fair.c:7484 [inline] load_balance+0x615c/0x88f0 kernel/sched/fair.c:8843 rebalance_domains+0x77d/0xe30 kernel/sched/fair.c:9221 run_rebalance_domains+0x2d1/0x320 kernel/sched/fair.c:9843 __do_softirq+0x592/0x979 kernel/softirq.c:285 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:287 [inline] kmsan_save_stack mm/kmsan/kmsan.c:302 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:692 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:478 update_load_sub kernel/sched/fair.c:129 [inline] account_entity_dequeue kernel/sched/fair.c:2661 [inline] reweight_entity+0x1456/0x1a30 kernel/sched/fair.c:2774 update_cfs_group kernel/sched/fair.c:2991 [inline] dequeue_task_fair+0x2e12/0x3300 kernel/sched/fair.c:5442 dequeue_task kernel/sched/core.c:762 [inline] deactivate_task+0x560/0x7d0 kernel/sched/core.c:778 detach_task kernel/sched/fair.c:7396 [inline] detach_tasks kernel/sched/fair.c:7484 [inline] load_balance+0x615c/0x88f0 kernel/sched/fair.c:8843 rebalance_domains+0x77d/0xe30 kernel/sched/fair.c:9221 run_rebalance_domains+0x2d1/0x320 kernel/sched/fair.c:9843 __do_softirq+0x592/0x979 kernel/softirq.c:285 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:287 [inline] kmsan_save_stack mm/kmsan/kmsan.c:302 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:692 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:478 update_load_sub kernel/sched/fair.c:129 [inline] account_entity_dequeue kernel/sched/fair.c:2661 [inline] dequeue_entity kernel/sched/fair.c:4267 [inline] dequeue_task_fair+0x14ea/0x3300 kernel/sched/fair.c:5407 dequeue_task kernel/sched/core.c:762 [inline] deactivate_task+0x560/0x7d0 kernel/sched/core.c:778 detach_task kernel/sched/fair.c:7396 [inline] detach_tasks kernel/sched/fair.c:7484 [inline] load_balance+0x615c/0x88f0 kernel/sched/fair.c:8843 rebalance_domains+0x77d/0xe30 kernel/sched/fair.c:9221 run_rebalance_domains+0x2d1/0x320 kernel/sched/fair.c:9843 __do_softirq+0x592/0x979 kernel/softirq.c:285 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:287 [inline] kmsan_save_stack mm/kmsan/kmsan.c:302 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:692 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:478 update_load_sub kernel/sched/fair.c:129 [inline] account_entity_dequeue kernel/sched/fair.c:2661 [inline] dequeue_entity kernel/sched/fair.c:4267 [inline] dequeue_task_fair+0x14ea/0x3300 kernel/sched/fair.c:5407 dequeue_task kernel/sched/core.c:762 [inline] deactivate_task+0x560/0x7d0 kernel/sched/core.c:778 detach_task kernel/sched/fair.c:7396 [inline] detach_tasks kernel/sched/fair.c:7484 [inline] load_balance+0x615c/0x88f0 kernel/sched/fair.c:8843 rebalance_domains+0x77d/0xe30 kernel/sched/fair.c:9221 run_rebalance_domains+0x2d1/0x320 kernel/sched/fair.c:9843 __do_softirq+0x592/0x979 kernel/softirq.c:285 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:287 [inline] kmsan_save_stack mm/kmsan/kmsan.c:302 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:692 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:478 update_load_set kernel/sched/fair.c:135 [inline] reweight_entity+0x128b/0x1a30 kernel/sched/fair.c:2780 update_cfs_group kernel/sched/fair.c:2991 [inline] dequeue_task_fair+0x2e12/0x3300 kernel/sched/fair.c:5442 dequeue_task kernel/sched/core.c:762 [inline] deactivate_task+0x560/0x7d0 kernel/sched/core.c:778 detach_task kernel/sched/fair.c:7396 [inline] detach_tasks kernel/sched/fair.c:7484 [inline] load_balance+0x615c/0x88f0 kernel/sched/fair.c:8843 rebalance_domains+0x77d/0xe30 kernel/sched/fair.c:9221 run_rebalance_domains+0x2d1/0x320 kernel/sched/fair.c:9843 __do_softirq+0x592/0x979 kernel/softirq.c:285 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+0x107/0x13c0 kernel/time/hrtimer.c:1499 ==================================================================