[  648.660837][    C0] tun0: no available key for peer 1, key-id: 0
[  648.870650][   T66] tun0: no available key for peer 3, key-id: 0
[  648.871908][   T66] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u16:1/66
[  648.872130][   T66] caller is ovpn_recv+0x193/0x2b0 [ovpn]
[  648.872266][   T66] CPU: 0 UID: 0 PID: 66 Comm: kworker/u16:1 Not tainted 7.0.0-virtme #5 PREEMPT(full) 
[  648.872270][   T66] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  648.872271][   T66] Workqueue: kstrp strp_work
[  648.872279][   T66] Call Trace:
[  648.872281][   T66]  <TASK>
[  648.872282][   T66]  dump_stack_lvl+0x6f/0xa0
[  648.872291][   T66]  check_preemption_disabled+0xdb/0xf0
[  648.872296][   T66]  ovpn_recv+0x193/0x2b0 [ovpn]
[  648.872301][   T66]  ovpn_tcp_rcv+0x279/0x910 [ovpn]
[  648.872305][   T66]  ? ovpn_tcp_write_space+0x2e0/0x2e0 [ovpn]
[  648.872309][   T66]  ? __copy_skb_header+0xb7/0x510
[  648.872313][   T66]  ? ovpn_tcp_disconnect+0x10/0x10 [ovpn]
[  648.872316][   T66]  ? __skb_send_sock+0x940/0xa70
[  648.872320][   T66]  __strp_recv+0x20f/0x1c30
[  648.872324][   T66]  ? rcu_lockdep_current_cpu_online+0x39/0x1b0
[  648.872329][   T66]  __tcp_read_sock+0x1c7/0x850
[  648.872333][   T66]  ? strp_process+0xb0/0xb0
[  648.872336][   T66]  ? tcp_cleanup_rbuf+0x1c0/0x1c0
[  648.872341][   T66]  strp_read_sock+0x20f/0x2b0
[  648.872344][   T66]  ? strp_stop+0x50/0x50
[  648.872345][   T66]  ? __lock_release.isra.0+0x6b/0x1a0
[  648.872350][   T66]  ? lockdep_hardirqs_on+0x8c/0x130
[  648.872352][   T66]  ? __local_bh_enable_ip+0xa5/0x140
[  648.872356][   T66]  strp_work+0x9f/0xe0
[  648.872358][   T66]  process_one_work+0xdf5/0x1410
[  648.872364][   T66]  ? pwq_dec_nr_in_flight+0x710/0x710
[  648.872366][   T66]  ? lock_acquire.part.0+0xbc/0x260
[  648.872373][   T66]  worker_thread+0x4f1/0xd60
[  648.872378][   T66]  ? rescuer_thread+0x1320/0x1320
[  648.872380][   T66]  kthread+0x364/0x460
[  648.872382][   T66]  ? trace_irq_enable.constprop.0+0x9b/0x180
[  648.872385][   T66]  ? kthread_affine_node+0x330/0x330
[  648.872387][   T66]  ret_from_fork+0x474/0x6b0
[  648.872391][   T66]  ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[  648.872395][   T66]  ? __switch_to+0x5a3/0xe00
[  648.872398][   T66]  ? kthread_affine_node+0x330/0x330
[  648.872400][   T66]  ret_from_fork_asm+0x11/0x20
[  648.872407][   T66]  </TASK>
[  657.074275][ T8910] iperf3 (8910) used greatest stack depth: 22656 bytes left
[  657.275838][ T8782] tun1: deleting peer with id 10, reason 4
[  657.278855][ T8817] tun0: deleting peer with id 6, reason 4
[  657.279048][ T8789] tun2: deleting peer with id 11, reason 4
[  657.279499][ T8818] tun6: deleting peer with id 15, reason 4
[  657.279805][ T8796] tun3: deleting peer with id 12, reason 4
[  657.280641][ T8810] tun5: deleting peer with id 14, reason 4
[  657.283685][ T8803] tun4: deleting peer with id 13, reason 4
[  657.284405][ T8817] tun0: deleting peer with id 5, reason 4
[  657.287450][ T8817] tun0: deleting peer with id 4, reason 4
[  657.293399][ T8817] tun0: deleting peer with id 3, reason 4
[  657.302326][ T8817] tun0: deleting peer with id 2, reason 4
[  657.310346][ T8817] tun0: deleting peer with id 1, reason 4