ip6_tunnel: ip6gre1 xmit: Local address not yet configured!
ip6_tunnel: ip6gre1 xmit: Local address not yet configured!
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
ip6_tunnel: ip6gre1 xmit: Local address not yet configured!
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (10501 ticks this GP) idle=bae/1/0x4000000000000002 softirq=34165/34165 fqs=0 
rcu: 	 (t=10502 jiffies g=48453 q=1372)
rcu: rcu_preempt kthread starved for 10503 jiffies! g48453 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt     I22696    10      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2831 [inline]
 __schedule+0x8cf/0x21d0 kernel/sched/core.c:3480
 schedule+0xfe/0x460 kernel/sched/core.c:3524
 schedule_timeout+0x140/0x260 kernel/time/timer.c:1804
 rcu_gp_fqs_loop+0x762/0xa80 kernel/rcu/tree.c:1934
 rcu_gp_kthread+0x341/0xc70 kernel/rcu/tree.c:2090
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:350
NMI backtrace for cpu 1
CPU: 1 PID: 16008 Comm: syz-executor2 Not tainted 4.19.0+ #84
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+0x244/0x39d lib/dump_stack.c:113
 nmi_cpu_backtrace.cold.1+0x5c/0xa1 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed 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:162 [inline]
 rcu_dump_cpu_stacks+0x16f/0x1bc kernel/rcu/tree.c:1195
 print_cpu_stall.cold.67+0x1f3/0x3c7 kernel/rcu/tree.c:1334
 check_cpu_stall kernel/rcu/tree.c:1408 [inline]
 rcu_pending kernel/rcu/tree.c:2961 [inline]
 rcu_check_callbacks+0xf3b/0x13f0 kernel/rcu/tree.c:2506
 update_process_times+0x2d/0x70 kernel/time/timer.c:1636
 tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164
 tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274
 __run_hrtimer kernel/time/hrtimer.c:1398 [inline]
 __hrtimer_run_queues+0x41c/0x10d0 kernel/time/hrtimer.c:1460
 hrtimer_interrupt+0x313/0x780 kernel/time/hrtimer.c:1518
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1034 [inline]
 smp_apic_timer_interrupt+0x1a1/0x760 arch/x86/kernel/apic/apic.c:1059
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:801
 </IRQ>
RIP: 0010:yield+0x0/0xe0 include/linux/compiler.h:179
Code: 95 f0 fe ff ff e8 20 52 07 fa 48 8b 85 e8 fe ff ff 48 8b 95 f0 fe ff ff e9 74 fe ff ff 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 <48> ba 00 00 00 00 00 fc ff df 55 48 89 e5 41 55 41 54 4c 8d 65 e8
RSP: 0018:ffff880186e866f8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff88018f9cc5c0 RBX: 0000000000000001 RCX: 1ffff10031f399cc
RDX: 0000000000000000 RSI: ffffffff8627700e RDI: ffffffff8931fc80
RBP: ffff880186e86808 R08: ffff88018f9cce60 R09: 0000000000000006
R10: 0000000000000000 R11: ffff88018f9cc5c0 R12: 1ffff10030dd0c00
R13: 0000000000000000 R14: ffff8801d1241668 R15: dffffc0000000000
 __dev_close_many+0x197/0x380 net/core/dev.c:1461
 dev_close_many+0x2df/0x860 net/core/dev.c:1499
 rollback_registered_many+0x543/0x1250 net/core/dev.c:7979
 rollback_registered+0x1e9/0x420 net/core/dev.c:8044
 unregister_netdevice_queue+0x321/0x5e0 net/core/dev.c:9088
 unregister_netdevice include/linux/netdevice.h:2637 [inline]
 __tun_detach+0x11b8/0x15c0 drivers/net/tun.c:723
 tun_detach drivers/net/tun.c:740 [inline]
 tun_chr_close+0xe3/0x180 drivers/net/tun.c:3376
 __fput+0x385/0xa30 fs/file_table.c:278
 ____fput+0x15/0x20 fs/file_table.c:309
 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x1ad6/0x26d0 kernel/exit.c:867
 do_group_exit+0x177/0x440 kernel/exit.c:970
 get_signal+0x8b0/0x1980 kernel/signal.c:2517
 do_signal+0x9c/0x21c0 arch/x86/kernel/signal.c:816
 exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: Bad RIP value.
RSP: 002b:00007fd26aea1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000457569
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd26aea26d4
R13: 00000000004ef912 R14: 00000000004cc460 R15: 00000000ffffffff
sched: RT throttling activated