rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=5e2/1/0x4000000000000004 softirq=24941/24942 fqs=4705 
	(t=10500 jiffies g=30785 q=1410)
NMI backtrace for cpu 0
CPU: 0 PID: 13145 Comm: syz-executor.4 Not tainted 5.4.0-rc2-next-20191009 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x183/0x1cf kernel/rcu/tree_stall.h:254
 print_cpu_stall kernel/rcu/tree_stall.h:455 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:529 [inline]
 rcu_pending kernel/rcu/tree.c:2795 [inline]
 rcu_sched_clock_irq.cold+0x4fd/0xc12 kernel/rcu/tree.c:2244
 update_process_times+0x2d/0x70 kernel/time/timer.c:1726
 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:167
 tick_sched_timer+0x53/0x140 kernel/time/tick-sched.c:1299
 __run_hrtimer kernel/time/hrtimer.c:1514 [inline]
 __hrtimer_run_queues+0x364/0xe40 kernel/time/hrtimer.c:1576
 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1638
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline]
 smp_apic_timer_interrupt+0x160/0x610 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:756 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x95/0xe0 kernel/locking/spinlock.c:191
Code: 48 c7 c0 a0 21 f3 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d 22 7d ab 01 00 74 24 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 cc 6d 07 fa 65 8b 05 ad 59 ba 78
RSP: 0018:ffff8880ae809b80 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff11e6434 RBX: 0000000000000286 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000286
RBP: ffff8880ae809b90 R08: 1ffffffff14ef142 R09: fffffbfff14ef143
R10: fffffbfff14ef142 R11: ffffffff8a778a17 R12: ffff8880ae824c40
R13: ffff8880ae824c40 R14: ffff8880ae824c40 R15: ffff8880ae824c40
 __mod_timer kernel/time/timer.c:1057 [inline]
 mod_timer+0x507/0xc10 kernel/time/timer.c:1100
 pie_timer+0x753/0x830 net/sched/sch_pie.c:454
 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786
 __do_softirq+0x262/0x98c kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x19b/0x1e0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:756 [inline]
RIP: 0010:generic_exec_single+0x33a/0x4c0 kernel/smp.c:155
Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 68 01 00 00 48 83 3d 96 1c 8b 07 00 0f 84 e0 00 00 00 e8 ab 13 0b 00 48 89 df 57 9d <0f> 1f 44 00 00 45 31 ed e9 39 fe ff ff e8 94 13 0b 00 0f 0b e9 23
RSP: 0018:ffff888049dbfaa0 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff13
RAX: 0000000000040000 RBX: 0000000000000216 RCX: ffffc9000e9b2000
RDX: 00000000000006ec RSI: ffffffff81680515 RDI: 0000000000000216
RBP: ffff888049dbfad0 R08: 1ffffffff14ef143 R09: fffffbfff14ef144
R10: fffffbfff14ef143 R11: ffffffff8a778a1f R12: 0000000000000200
R13: ffff888049dbfb20 R14: ffff888049dbfbf0 R15: ffffffff81893850
 smp_call_function_single+0x17c/0x480 kernel/smp.c:308
 task_function_call+0xe9/0x180 kernel/events/core.c:114
 perf_install_in_context+0x266/0x410 kernel/events/core.c:2712
 __do_sys_perf_event_open+0x1c2b/0x2b40 kernel/events/core.c:11226
 __se_sys_perf_event_open kernel/events/core.c:10842 [inline]
 __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:10842
 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459a59
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:00007fb9c9b59c78 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459a59
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 000000002001d000
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fb9c9b5a6d4
R13: 00000000004c6ae8 R14: 00000000004dc078 R15: 00000000ffffffff