rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: (detected by 1, t=10502 jiffies, g=269717, q=149) rcu: All QSes seen, last rcu_preempt kthread activity 10492 (4295093538-4295083046), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor.5 R running task 27560 17273 9139 0x00000808 Call Trace: sched_show_task+0x348/0x400 kernel/sched/core.c:5758 print_other_cpu_stall kernel/rcu/tree_stall.h:410 [inline] check_cpu_stall kernel/rcu/tree_stall.h:536 [inline] rcu_pending kernel/rcu/tree.c:2736 [inline] rcu_sched_clock_irq+0x1597/0x16d0 kernel/rcu/tree.c:2183 update_process_times+0x134/0x190 kernel/time/timer.c:1639 tick_sched_handle kernel/time/tick-sched.c:167 [inline] tick_sched_timer+0x263/0x420 kernel/time/tick-sched.c:1296 __run_hrtimer kernel/time/hrtimer.c:1389 [inline] __hrtimer_run_queues+0x403/0x850 kernel/time/hrtimer.c:1451 hrtimer_interrupt+0x38c/0xda0 kernel/time/hrtimer.c:1509 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline] smp_apic_timer_interrupt+0x109/0x280 arch/x86/kernel/apic/apic.c:1135 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:768 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xad/0xe0 kernel/locking/spinlock.c:191 Code: b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 0c 48 c7 c7 80 87 8a 88 e8 92 95 30 fa 48 83 3d 7a 94 0e 01 00 74 2d 4c 89 f7 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 54 90 d4 f9 65 8b 05 a9 0a 86 78 RSP: 0018:ffff8880aeb09bd8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11150f0 RBX: ffff8880aeb24a80 RCX: dffffc0000000000 RDX: 0000000000000102 RSI: ffffffff816369d1 RDI: 0000000000000286 RBP: ffff8880aeb09be8 R08: ffffffff81790e74 R09: ffffed1015d64951 R10: ffffed1015d64951 R11: 0000000000000000 R12: ffff8880aeb24a80 R13: ffff88804d06be90 R14: 0000000000000286 R15: 0000000000000000 __mod_timer+0xf01/0x1590 kernel/time/timer.c:1053 mod_timer+0x1f/0x30 kernel/time/timer.c:1096 pie_timer+0x6c4/0x7d0 net/sched/sch_pie.c:454 call_timer_fn+0x95/0x170 kernel/time/timer.c:1322 expire_timers kernel/time/timer.c:1366 [inline] __run_timers+0x79e/0x970 kernel/time/timer.c:1685 run_timer_softirq+0x4a/0x90 kernel/time/timer.c:1698 __do_softirq+0x333/0x7c4 arch/x86/include/asm/paravirt.h:778 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x227/0x230 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:537 [inline] smp_apic_timer_interrupt+0x113/0x280 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:98 Code: 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d 34 69 4a 07 48 89 de e8 84 89 38 00 5b 5d c3 90 <48> 8b 04 24 65 48 8b 0c 25 c0 fd 01 00 65 8b 15 78 70 8e 7e f7 c2 RSP: 0018:ffff8880321277b8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000002 RSI: ffffffff88899590 RDI: 0000000000000000 RBP: ffff888032127910 R08: 0000000000000001 R09: ffffffff81122564 R10: ffff88802d4a2280 R11: 0000000000000002 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880277ed5e8 R15: 0000000000000000 x86_emulate_instruction+0x2ac/0x2db0 arch/x86/kvm/x86.c:6514 kvm_mmu_page_fault+0x2e9/0xec0 arch/x86/kvm/mmu.c:5431 handle_ept_violation+0x1bd/0x200 arch/x86/kvm/vmx/vmx.c:5120 vmx_handle_exit+0x3c8/0xd50 arch/x86/kvm/vmx/vmx.c:5886 vcpu_enter_guest+0x3f8d/0x54b0 arch/x86/kvm/x86.c:8088 vcpu_run+0x393/0xd40 arch/x86/kvm/x86.c:8152 kvm_arch_vcpu_ioctl_run+0x636/0x900 arch/x86/kvm/x86.c:8360 kvm_vcpu_ioctl+0x6cf/0xaf0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2765 do_vfs_ioctl+0x744/0x1730 fs/ioctl.c:46 ksys_ioctl fs/ioctl.c:713 [inline] __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0xe3/0x120 fs/ioctl.c:718 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f637ea50c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f637ea516d4 R13: 00000000004c2c68 R14: 00000000004d6330 R15: 00000000ffffffff