block nbd5: shutting down sockets
block nbd5: shutting down sockets
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=14257, q=27)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294978519-4294968017), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.3  R  running task    27040  9724   8186 0x00000000
Call Trace:
 <IRQ>
 sched_show_task kernel/sched/core.c:5338 [inline]
 sched_show_task.cold+0x2e2/0x343 kernel/sched/core.c:5313
 print_other_cpu_stall kernel/rcu/tree.c:1430 [inline]
 check_cpu_stall kernel/rcu/tree.c:1557 [inline]
 __rcu_pending kernel/rcu/tree.c:3293 [inline]
 rcu_pending kernel/rcu/tree.c:3336 [inline]
 rcu_check_callbacks.cold+0xaf0/0xddc kernel/rcu/tree.c:2682
 update_process_times+0x2a/0x70 kernel/time/timer.c:1638
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:168
 tick_sched_timer+0x42/0x130 kernel/time/tick-sched.c:1278
 __run_hrtimer kernel/time/hrtimer.c:1401 [inline]
 __hrtimer_run_queues+0x2fc/0xd50 kernel/time/hrtimer.c:1463
 hrtimer_interrupt+0x312/0x770 kernel/time/hrtimer.c:1521
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1067 [inline]
 smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1092
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
 </IRQ>
RIP: 0010:__vmcs_readl arch/x86/kvm/vmx.c:2328 [inline]
RIP: 0010:vmcs_read32 arch/x86/kvm/vmx.c:2346 [inline]
RIP: 0010:vmx_read_guest_seg_limit arch/x86/kvm/vmx.c:2555 [inline]
RIP: 0010:vmx_get_segment arch/x86/kvm/vmx.c:5448 [inline]
RIP: 0010:vmx_get_segment+0x304/0x830 arch/x86/kvm/vmx.c:5432
Code: 84 c0 74 08 3c 03 0f 8e 0a 04 00 00 4c 89 e8 48 c1 e0 04 44 8b b0 48 ff 63 87 0f 1f 44 00 00 e8 c2 af 4f 00 4c 89 f2 0f 78 d0 <eb> 05 e8 e5 c3 f1 ff 49 89 c6 e8 ad af 4f 00 4b 8d 44 6d 00 48 8d
RSP: 0018:ffff888042177360 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: 00000000000fffff RBX: ffff8880421773c8 RCX: ffffc9000c4e9000
RDX: 0000000000004806 RSI: ffffffff8117f30e RDI: ffffffff8763ff78
RBP: ffff888042378140 R08: ffff888040dfe500 R09: ffff8880421775a8
R10: ffffed1015cc4732 R11: ffff8880ae623993 R12: 0000000000000003
R13: 0000000000000003 R14: 0000000000004806 R15: 0000000000100000
 kvm_get_segment arch/x86/kvm/x86.c:4925 [inline]
 emulator_get_segment+0xc1/0x460 arch/x86/kvm/x86.c:5719
 __linearize arch/x86/kvm/emulate.c:713 [inline]
 linearize+0x206/0x860 arch/x86/kvm/emulate.c:758
 segmented_read+0x9a/0x340 arch/x86/kvm/emulate.c:1429
 x86_emulate_insn+0x173b/0x43e0 arch/x86/kvm/emulate.c:5587
 x86_emulate_instruction+0xbda/0x1b80 arch/x86/kvm/x86.c:6387
 kvm_mmu_page_fault+0x2ee/0x1540 arch/x86/kvm/mmu.c:5390
 vmx_handle_exit+0x26f/0x16b0 arch/x86/kvm/vmx.c:10199
 vcpu_enter_guest+0x10ca/0x5ed0 arch/x86/kvm/x86.c:7850
 vcpu_run arch/x86/kvm/x86.c:7913 [inline]
 kvm_arch_vcpu_ioctl_run+0x446/0x16a0 arch/x86/kvm/x86.c:8113
 kvm_vcpu_ioctl+0x493/0xe20 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2667
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xcda/0x12e0 fs/ioctl.c:688
 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c679
Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb043a7ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb043a7b6d4 RCX: 000000000045c679
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000007
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000003bf R14: 00000000004c62b5 R15: 000000000076bf0c
rcu: rcu_preempt kthread starved for 10502 jiffies! g14257 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    29136    10      2 0x80000000
Call Trace:
 schedule+0x8d/0x1b0 kernel/sched/core.c:3559
 schedule_timeout+0x4d1/0xf20 kernel/time/timer.c:1806
 rcu_gp_kthread+0xcee/0x2060 kernel/rcu/tree.c:2202
 kthread+0x34a/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415