rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=abe/1/0x4000000000000002 softirq=47448/47450 fqs=5228 
	(t=10500 jiffies g=70053 q=1063)
NMI backtrace for cpu 0
CPU: 0 PID: 26732 Comm: syz-executor.0 Not tainted 5.2.0-rc1+ #7
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+0x63/0xa4 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1be/0x236 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:2625 [inline]
 rcu_sched_clock_irq.cold+0x4d1/0xbfd kernel/rcu/tree.c:2161
 update_process_times+0x32/0x80 kernel/time/timer.c:1639
 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:167
 tick_sched_timer+0x47/0x130 kernel/time/tick-sched.c:1298
 __run_hrtimer kernel/time/hrtimer.c:1389 [inline]
 __hrtimer_run_queues+0x33b/0xdd0 kernel/time/hrtimer.c:1451
 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1509
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline]
 smp_apic_timer_interrupt+0x111/0x550 arch/x86/kernel/apic/apic.c:1066
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:806
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:767 [inline]
RIP: 0010:lock_is_held_type+0x272/0x320 kernel/locking/lockdep.c:4343
Code: ff df c7 83 7c 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 88 00 00 00 48 83 3d e6 af 5b 07 00 74 31 48 8b 7d c0 57 9d <0f> 1f 44 00 00 48 83 c4 20 44 89 e0 5b 41 5c 41 5d 41 5e 41 5f 5d
RSP: 0018:ffff88805e80f130 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff1164e0e RBX: ffff8880a0b68040 RCX: ffff8880a0b688c0
RDX: dffffc0000000000 RSI: ffff8880a9822070 RDI: 0000000000000282
RBP: ffff88805e80f178 R08: ffff8880a0b68040 R09: ffff8880a0b68930
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffff8880a0b68910 R14: ffff8880a9822070 R15: 0000000000000002
 lock_is_held include/linux/lockdep.h:356 [inline]
 __fib6_update_sernum_upto_root.isra.0+0x146/0x250 net/ipv6/ip6_fib.c:1206
 fib6_add+0x1a0c/0x3650 net/ipv6/ip6_fib.c:1337
 __ip6_ins_rt+0x54/0x80 net/ipv6/route.c:1189
 ip6_ins_rt+0x96/0xd0 net/ipv6/route.c:1199
 __ipv6_ifa_notify+0x7a8/0xa80 net/ipv6/addrconf.c:5961
 ipv6_ifa_notify+0xf7/0x210 net/ipv6/addrconf.c:5996
 add_addr+0x1da/0x280 net/ipv6/addrconf.c:3090
 sit_add_v4_addrs net/ipv6/addrconf.c:3145 [inline]
 addrconf_sit_config net/ipv6/addrconf.c:3388 [inline]
 addrconf_notify+0x1554/0x2270 net/ipv6/addrconf.c:3583
 notifier_call_chain+0xc2/0x230 kernel/notifier.c:95
 __raw_notifier_call_chain kernel/notifier.c:396 [inline]
 raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403
 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1753
 call_netdevice_notifiers_extack net/core/dev.c:1765 [inline]
 call_netdevice_notifiers net/core/dev.c:1779 [inline]
 __dev_notify_flags+0x121/0x2c0 net/core/dev.c:7626
 dev_change_flags+0x10d/0x170 net/core/dev.c:7664
 devinet_ioctl+0x138a/0x1c50 net/ipv4/devinet.c:1104
 inet_ioctl+0x1f4/0x340 net/ipv4/af_inet.c:952
 sock_do_ioctl+0xd8/0x2f0 net/socket.c:1049
 sock_ioctl+0x3ed/0x780 net/socket.c:1200
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:696
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459279
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:00007f03a79d6c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459279
RDX: 00000000200000c0 RSI: 0000000000008914 RDI: 0000000000000004
RBP: 000000000075bfc0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f03a79d76d4
R13: 00000000004c4c76 R14: 00000000004d89b8 R15: 00000000ffffffff