random: crng init done ================================================================== 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: 0 PID: 11170 Comm: blkid 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 enqueue_entity kernel/sched/fair.c:4033 [inline] enqueue_task_fair+0x550/0x43a0 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 hrtimer_wakeup+0xac/0x100 kernel/time/hrtimer.c:1598 __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 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:857 RIP: 0010:msan_get_shadow_origin_ptr+0x107/0x230 mm/kmsan/kmsan_instr.c:256 RSP: 0018:ffff8801bf25fcb0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff12 RAX: ffff88023f25fe20 RBX: ffffffff8b311000 RCX: ffff88021fff16e0 RDX: 00000000000006e0 RSI: 0000000000000008 RDI: 0000000000000000 RBP: ffff8801bf25fce0 R08: 0000000001080020 R09: 0000000000000002 R10: 0000000000000000 R11: 00007f02f3f59000 R12: 0000000000000000 R13: ffff8801bf25fe20 R14: ffffffff8b310000 R15: ffff8801bf25fe20 __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:321 userfaultfd_unmap_complete+0x62/0x4e0 fs/userfaultfd.c:829 vm_munmap mm/mmap.c:2747 [inline] SYSC_munmap+0x1c5/0x1f0 mm/mmap.c:2755 SyS_munmap+0x46/0x70 mm/mmap.c:2752 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 RIP: 0033:0x7f02f3f52417 RSP: 002b:00007ffd7d536bf8 EFLAGS: 00000203 ORIG_RAX: 000000000000000b RAX: ffffffffffffffda RBX: 00007f02f415d1c8 RCX: 00007f02f3f52417 RDX: 0000000000199200 RSI: 00000000000033ef RDI: 00007f02f4155000 RBP: 00007ffd7d536d60 R08: 0000000000000001 R09: 0000000000000007 R10: 00007f02f3f4ca0b R11: 0000000000000203 R12: 00000000e4eaa0c5 R13: 000001ece4eaa0c5 R14: 000001ece4d311e4 R15: 00007f02f4152740 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_sub kernel/sched/fair.c:144 [inline] account_entity_dequeue kernel/sched/fair.c:2676 [inline] dequeue_entity kernel/sched/fair.c:4127 [inline] dequeue_task_fair+0x16f0/0x2ea0 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 do_task_dead+0xa4/0xd0 kernel/sched/core.c:3478 do_exit+0x340e/0x38d0 kernel/exit.c:924 do_group_exit+0x1a0/0x360 kernel/exit.c:970 SYSC_exit_group+0x21/0x30 kernel/exit.c:981 SyS_exit_group+0x25/0x30 kernel/exit.c:979 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 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 ==================================================================