[  128.639859][ T1351] ip (1351) used greatest stack depth: 24248 bytes left
[  135.751188][    C1] tun0: no available key for peer 2, key-id: 0
[  135.845188][    C1] tun0: no available key for peer 4, key-id: 0
[  135.897180][   T69] tun0: no available key for peer 5, key-id: 0
[  135.897458][   T69] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u16:1/69
[  135.897682][   T69] caller is ovpn_recv+0x193/0x2b0 [ovpn]
[  135.897828][   T69] CPU: 1 UID: 0 PID: 69 Comm: kworker/u16:1 Not tainted 7.0.0-rc6-virtme #1 PREEMPT(full) 
[  135.897831][   T69] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  135.897833][   T69] Workqueue: kstrp strp_work
[  135.897841][   T69] Call Trace:
[  135.897842][   T69]  <TASK>
[  135.897844][   T69]  dump_stack_lvl+0x6f/0xa0
[  135.897851][   T69]  check_preemption_disabled+0xdb/0xf0
[  135.897856][   T69]  ovpn_recv+0x193/0x2b0 [ovpn]
[  135.897860][   T69]  ovpn_tcp_rcv+0x279/0x910 [ovpn]
[  135.897866][   T69]  ? ovpn_tcp_write_space+0x2e0/0x2e0 [ovpn]
[  135.897869][   T69]  ? __copy_skb_header+0xb7/0x440
[  135.897873][   T69]  ? ovpn_tcp_disconnect+0x10/0x10 [ovpn]
[  135.897876][   T69]  ? __alloc_skb+0x580/0x5f0
[  135.897880][   T69]  __strp_recv+0x20f/0x1c30
[  135.897885][   T69]  ? rcu_lockdep_current_cpu_online+0x39/0x1b0
[  135.897890][   T69]  __tcp_read_sock+0x1c7/0x850
[  135.897895][   T69]  ? strp_process+0xb0/0xb0
[  135.897898][   T69]  ? tcp_cleanup_rbuf+0x1c0/0x1c0
[  135.897903][   T69]  strp_read_sock+0x20f/0x2b0
[  135.897906][   T69]  ? strp_stop+0x50/0x50
[  135.897908][   T69]  ? __lock_release.isra.0+0x6b/0x1a0
[  135.897913][   T69]  ? lockdep_hardirqs_on+0x8c/0x130
[  135.897914][   T69]  ? __local_bh_enable_ip+0xa5/0x140
[  135.897918][   T69]  strp_work+0x9f/0xe0
[  135.897921][   T69]  process_one_work+0xdf5/0x1410
[  135.897928][   T69]  ? pwq_dec_nr_in_flight+0x710/0x710
[  135.897930][   T69]  ? lock_acquire.part.0+0xbc/0x260
[  135.897937][   T69]  worker_thread+0x4f1/0xd60
[  135.897940][   T69]  ? rescuer_thread+0x1320/0x1320
[  135.897943][   T69]  ? __kthread_parkme+0xbd/0x210
[  135.897947][   T69]  ? rescuer_thread+0x1320/0x1320
[  135.897949][   T69]  kthread+0x364/0x460
[  135.897951][   T69]  ? trace_irq_enable.constprop.0+0x9b/0x180
[  135.897954][   T69]  ? kthread_affine_node+0x330/0x330
[  135.897957][   T69]  ret_from_fork+0x474/0x6b0
[  135.897961][   T69]  ? arch_exit_to_user_mode_prepare.isra.0+0x140/0x140
[  135.897964][   T69]  ? __switch_to+0x540/0xd10
[  135.897968][   T69]  ? kthread_affine_node+0x330/0x330
[  135.897970][   T69]  ret_from_fork_asm+0x11/0x20
[  135.897978][   T69]  </TASK>
[  135.945691][    C1] tun0: no available key for peer 6, key-id: 0
[  153.672133][ T1540] iperf3 (1540) used greatest stack depth: 23288 bytes left
[  155.899151][ T1565] tun0: deleting peer with id 1, reason 1
[  155.943314][ T1566] tun1: deleting peer with id 1, reason 1
[  158.469795][ T1580] tun0: deleting peer with id 2, reason 1
[  158.532780][ T1581] tun2: deleting peer with id 2, reason 1
[  162.211860][   T74] tun0: deleting peer with id 4, reason 2
[  162.212328][   T74] tun0: deleting peer with id 3, reason 2
[  162.212524][   T74] tun0: deleting peer with id 5, reason 2
[  162.212711][   T74] tun0: deleting peer with id 6, reason 2
[  167.268006][   T64] tun3: deleting peer with id 3, reason 2
[  167.330632][   T10] tun4: deleting peer with id 4, reason 2
[  167.395635][   T74] tun6: deleting peer with id 6, reason 2
[  167.396228][   T34] tun5: deleting peer with id 5, reason 2