================================================================== 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: 1 PID: 0 Comm: swapper/1 Not tainted 4.17.0+ #9 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:1125 __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:620 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 enqueue_entity kernel/sched/fair.c:4173 [inline] enqueue_task_fair+0x558/0x4490 kernel/sched/fair.c:5359 enqueue_task kernel/sched/core.c:751 [inline] activate_task kernel/sched/core.c:770 [inline] ttwu_activate kernel/sched/core.c:1658 [inline] ttwu_do_activate kernel/sched/core.c:1717 [inline] ttwu_queue kernel/sched/core.c:1862 [inline] try_to_wake_up+0x162f/0x2260 kernel/sched/core.c:2075 wake_up_process+0x34/0x40 kernel/sched/core.c:2148 hrtimer_wakeup+0xac/0x100 kernel/time/hrtimer.c:1647 __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0xc54/0x1630 kernel/time/hrtimer.c:1460 hrtimer_interrupt+0x451/0x13c0 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt+0x6b/0x250 arch/x86/kernel/apic/apic.c:1025 smp_apic_timer_interrupt+0x5a/0x90 arch/x86/kernel/apic/apic.c:1053 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:866 RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:55 [inline] RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:97 [inline] RIP: 0010:default_idle+0x20b/0x3e0 arch/x86/kernel/process.c:500 RSP: 0018:ffff8801d8e5fdf0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff8801fd432f18 RBX: 0000000000000000 RCX: ffff880000000000 RDX: ffff8801fd032f18 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000 RBP: ffff8801d8e5fe28 R08: 0000000001080020 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff89fef830 R12: ffff8801d8e5fe8f R13: ffff8801d8da57c0 R14: ffff8801d8e5fe8c R15: ffff8801d8da6098 arch_cpu_idle+0x26/0x30 arch/x86/kernel/process.c:491 default_idle_call kernel/sched/idle.c:93 [inline] cpuidle_idle_call kernel/sched/idle.c:153 [inline] do_idle+0x36d/0x830 kernel/sched/idle.c:262 cpu_startup_entry+0x45/0x50 kernel/sched/idle.c:368 start_secondary+0x3c6/0x490 arch/x86/kernel/smpboot.c:272 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:242 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:282 [inline] kmsan_save_stack mm/kmsan/kmsan.c:297 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:689 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:464 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 __schedule+0x164/0x770 kernel/sched/core.c:3474 do_task_dead+0xc8/0xf0 kernel/sched/core.c:3541 do_exit+0x347e/0x3930 kernel/exit.c:924 do_group_exit+0x1a0/0x360 kernel/exit.c:970 get_signal+0x1405/0x1ec0 kernel/signal.c:2482 do_signal+0xb8/0x1d20 arch/x86/kernel/signal.c:810 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline] prepare_exit_to_usermode+0x271/0x3a0 arch/x86/entry/common.c:196 syscall_return_slowpath+0xe9/0x710 arch/x86/entry/common.c:265 do_syscall_64+0x1ad/0x230 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:282 [inline] kmsan_save_stack mm/kmsan/kmsan.c:297 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:689 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:464 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] entity_tick kernel/sched/fair.c:4464 [inline] task_tick_fair+0x5f8/0x1050 kernel/sched/fair.c:9893 scheduler_tick+0x28d/0x490 kernel/sched/core.c:3105 update_process_times+0x157/0x1a0 kernel/time/timer.c:1641 tick_sched_handle kernel/time/tick-sched.c:164 [inline] tick_sched_timer+0x3ba/0x520 kernel/time/tick-sched.c:1274 __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0xc54/0x1630 kernel/time/hrtimer.c:1460 hrtimer_interrupt+0x451/0x13c0 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt+0x6b/0x250 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+0x107/0x13c0 kernel/time/hrtimer.c:1499 ==================================================================