INFO: rcu_preempt self-detected stall on CPU
	1-...: (2 GPs behind) idle=2fe/140000000000001/0 softirq=41948/41948 fqs=2 
	 (t=10500 jiffies g=12743 c=12742 q=47)
rcu_preempt kthread starved for 10495 jiffies! g12743 c12742 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_preempt     R  running task    29920     8      2 0x80000000
Call Trace:
 schedule+0x8d/0x1b0 kernel/sched/core.c:3428
 schedule_timeout+0x43c/0xe40 kernel/time/timer.c:1746
 rcu_gp_kthread+0xb8e/0x1ce0 kernel/rcu/tree.c:2255
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
NMI backtrace for cpu 1
CPU: 1 PID: 18447 Comm: syz-executor.1 Not tainted 4.14.172-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x13e/0x194 lib/dump_stack.c:58
 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x139/0x17e lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
 rcu_dump_cpu_stacks+0x16d/0x1b8 kernel/rcu/tree.c:1396
 print_cpu_stall kernel/rcu/tree.c:1542 [inline]
 check_cpu_stall kernel/rcu/tree.c:1610 [inline]
 __rcu_pending kernel/rcu/tree.c:3390 [inline]
 rcu_pending kernel/rcu/tree.c:3452 [inline]
 rcu_check_callbacks.cold+0x490/0xdaa kernel/rcu/tree.c:2792
 update_process_times+0x29/0x60 kernel/time/timer.c:1590
 tick_sched_handle+0x7d/0x150 kernel/time/tick-sched.c:165
 tick_sched_timer+0x3e/0x120 kernel/time/tick-sched.c:1223
 __run_hrtimer kernel/time/hrtimer.c:1223 [inline]
 __hrtimer_run_queues+0x25c/0xbb0 kernel/time/hrtimer.c:1287
 hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
 smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
 apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
 </IRQ>
RIP: 0010:vcpu_enter_guest+0xd66/0x5240 arch/x86/kvm/x86.c:7297
RSP: 0018:ffff8882101c7ae0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000040000 RBX: ffff88804aa5c640 RCX: ffffc9000903d000
RDX: 0000000000040000 RSI: ffffffff810a3a8f RDI: ffff88804aa5cebc
RBP: ffff8882101c7be0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888044de1040
R13: ffff888044de1120 R14: ffff888044de1068 R15: ffffff00a77016da
 vcpu_run arch/x86/kvm/x86.c:7379 [inline]
 kvm_arch_vcpu_ioctl_run+0x2fe/0xfd0 arch/x86/kvm/x86.c:7546
 kvm_vcpu_ioctl+0x3df/0xc70 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2661
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c479
RSP: 002b:00007f888c0cdc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f888c0ce6d4 RCX: 000000000045c479
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000003bf R14: 00000000004c6098 R15: 000000000076bf2c
INFO: rcu_sched detected stalls on CPUs/tasks:
	1-...: (3 GPs behind) idle=2fe/140000000000001/0 softirq=41947/41948 fqs=2 
	(detected by 0, t=10543 jiffies, g=9223, c=9222, q=0)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 18447 Comm: syz-executor.1 Not tainted 4.14.172-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88804aa5c640 task.stack: ffff8882101c0000
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:36 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:142 [inline]
RIP: 0010:native_write_msr+0x6/0x20 arch/x86/include/asm/msr.h:150
RSP: 0018:ffff8880aeb07ea0 EFLAGS: 00000046
RAX: 00000000000000ea RBX: 0000000000000838 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 00000000000000ea RDI: 0000000000000838
RBP: ffff8880aeb1f140 R08: 00000087c59e75e8 R09: ffff88821fff7048
R10: ffff88821fff7050 R11: 0000000000000001 R12: 00000000000000ea
R13: 0000000000000003 R14: 00000086215c62fe R15: 05c93349daff5464
FS:  00007f888c0ce700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000dc0200f CR3: 000000008ed4d000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 paravirt_write_msr arch/x86/include/asm/paravirt.h:117 [inline]
 native_apic_msr_write arch/x86/include/asm/apic.h:193 [inline]
 native_apic_msr_write+0x54/0x80 arch/x86/include/asm/apic.h:187
 apic_write arch/x86/include/asm/apic.h:395 [inline]
 lapic_next_event+0x53/0x80 arch/x86/kernel/apic/apic.c:469
 clockevents_program_event+0x1fa/0x2e0 kernel/time/clockevents.c:339
 tick_program_event+0x80/0xd0 kernel/time/tick-oneshot.c:47
 hrtimer_interrupt+0x336/0x5e0 kernel/time/hrtimer.c:1334
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
 smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
 apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
 </IRQ>
RIP: 0010:kvm_read_cr4_bits arch/x86/kvm/kvm_cache_regs.h:65 [inline]
RIP: 0010:kvm_read_cr4 arch/x86/kvm/kvm_cache_regs.h:79 [inline]
RIP: 0010:emulator_get_cr+0x1d1/0x2d0 arch/x86/kvm/x86.c:5280
RSP: 0018:ffff8882101c7788 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000004 RBX: ffff888044de48a0 RCX: ffffc9000903d000
RDX: 0000000000040000 RSI: ffffffff8108876f RDI: ffff888044de48a0
RBP: ffff888044de1040 R08: 0000000000000000 R09: ffff888044de49c0
R10: ffffed10089bc939 R11: ffff888044de49cb R12: 0000000000000004
R13: 0000000000000096 R14: ffff888044de4ad8 R15: ffffffff86a27be0
 ctxt_virt_addr_bits arch/x86/kvm/x86.h:114 [inline]
 __linearize arch/x86/kvm/emulate.c:702 [inline]
 __do_insn_fetch_bytes+0x2e5/0x5d0 arch/x86/kvm/emulate.c:878
 x86_decode_insn+0x152e/0x5070 arch/x86/kvm/emulate.c:5068
 x86_emulate_instruction+0x5e7/0x16b0 arch/x86/kvm/x86.c:5946
 kvm_mmu_page_fault+0x1be/0x300 arch/x86/kvm/mmu.c:5089
 vmx_handle_exit+0x1f8/0x12f0 arch/x86/kvm/vmx.c:9215
 vcpu_enter_guest+0xf28/0x5240 arch/x86/kvm/x86.c:7316
 vcpu_run arch/x86/kvm/x86.c:7379 [inline]
 kvm_arch_vcpu_ioctl_run+0x2fe/0xfd0 arch/x86/kvm/x86.c:7546
 kvm_vcpu_ioctl+0x3df/0xc70 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2661
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c479
RSP: 002b:00007f888c0cdc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f888c0ce6d4 RCX: 000000000045c479
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006
RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000003bf R14: 00000000004c6098 R15: 000000000076bf2c
Code: df a7 86 0f 21 f8 c3 0f 21 c0 c3 0f 21 c8 c3 0f 21 d0 c3 0f 21 d8 c3 0f 21 f0 c3 0f 0b 0f 1f 84 00 00 00 00 00 89 f9 89 f0 0f 30 <0f> 1f 44 00 00 c3 48 c1 e2 20 89 f6 48 09 d6 31 d2 e9 24 fc e5 
rcu_sched kthread starved for 10539 jiffies! g9223 c9222 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_sched       R  running task    29920     9      2 0x80000000
Call Trace:
 schedule+0x8d/0x1b0 kernel/sched/core.c:3428
 schedule_timeout+0x43c/0xe40 kernel/time/timer.c:1746
 rcu_gp_kthread+0xb8e/0x1ce0 kernel/rcu/tree.c:2255
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404