INFO: rcu_preempt self-detected stall on CPU
	1-...: (10500 ticks this GP) idle=686/140000000000002/0 softirq=21113/21113 fqs=0 
	 (t=10500 jiffies g=4215 c=4214 q=290)
rcu_preempt kthread starved for 10500 jiffies! g4215 c4214 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
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: 11335 Comm: syz-executor.4 Not tainted 4.14.173-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
RIP: 0010:memcpy include/linux/string.h:347 [inline]
RIP: 0010:aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:439 [inline]
RIP: 0010:aoecmd_cfg+0x271/0x570 drivers/block/aoe/aoecmd.c:1392
RSP: 0018:ffff8880aeb07c78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 1ffff11013580193 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000006 RSI: ffff88809b214010 RDI: ffff88809ac00c98
RBP: ffff88809ac00940 R08: ffffed100fbfccf9 R09: ffff8880836ff2f0
R10: ffffed10106dfe5e R11: ffff8880836ff2f5 R12: 1ffff11015d60f91
R13: ffff8880836ff2f0 R14: ffff88809ac00e80 R15: ffff8880aeb07cb8
 discover_timer drivers/block/aoe/aoemain.c:44 [inline]
 discover_timer+0xc5/0x160 drivers/block/aoe/aoemain.c:21
 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279
 expire_timers kernel/time/timer.c:1318 [inline]
 __run_timers kernel/time/timer.c:1636 [inline]
 __run_timers kernel/time/timer.c:1604 [inline]
 run_timer_softirq+0x52a/0x1390 kernel/time/timer.c:1649
 __do_softirq+0x254/0x9bf kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x15b/0x1a0 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
 </IRQ>
RIP: 0010:vm_lock_anon_vma mm/mmap.c:3378 [inline]
RIP: 0010:mm_take_all_locks+0x406/0x583 mm/mmap.c:3484
RSP: 0018:ffff888049c5fc28 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: ffff8880807633a0 RBX: ffff88808c55e5b0 RCX: ffff88808f58d330
RDX: ffff88808454fec0 RSI: ffffffff817bb0ea RDI: ffff888080763438
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000078 R11: ffff88807fdba640 R12: ffff88809f874cc0
R13: ffff88807fdba640 R14: ffff888084d51778 R15: ffff888084d517f0
 do_mmu_notifier_register+0x33a/0x450 mm/mmu_notifier.c:248
 kvm_init_mmu_notifier arch/x86/kvm/../../../virt/kvm/kvm_main.c:513 [inline]
 kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:705 [inline]
 kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:3270 [inline]
 kvm_dev_ioctl+0xa14/0x1480 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3321
 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: 0033:0x45c849
RSP: 002b:00007f62721b5c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f62721b66d4 RCX: 000000000045c849
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000004
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000390 R14: 00000000004c606e R15: 000000000076bf0c