[  221.530348][    C1] tun0: no available key for peer 2, key-id: 0
[  221.583917][   T68] tun0: no available key for peer 3, key-id: 0
[  221.584184][   T68] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u16:1/68
[  221.584409][   T68] caller is ovpn_recv+0x192/0x2a0 [ovpn]
[  221.584551][   T68] CPU: 3 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 7.0.0-rc3-virtme #1 PREEMPT(full) 
[  221.584555][   T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  221.584556][   T68] Workqueue: kstrp strp_work
[  221.584564][   T68] Call Trace:
[  221.584565][   T68]  <TASK>
[  221.584567][   T68]  dump_stack_lvl+0x6f/0xa0
[  221.584574][   T68]  check_preemption_disabled+0xdb/0xf0
[  221.584579][   T68]  ovpn_recv+0x192/0x2a0 [ovpn]
[  221.584584][   T68]  ovpn_tcp_rcv+0x277/0x920 [ovpn]
[  221.584589][   T68]  ? ovpn_tcp_write_space+0x2b0/0x2b0 [ovpn]
[  221.584593][   T68]  ? ovpn_tcp_disconnect+0x10/0x10 [ovpn]
[  221.584600][   T68]  ? __skb_ext_set+0x170/0x430
[  221.584605][   T68]  __strp_recv+0x1ee/0x1b70
[  221.584610][   T68]  ? rcu_lockdep_current_cpu_online+0x39/0x1b0
[  221.584616][   T68]  __tcp_read_sock+0x1a1/0x7c0
[  221.584620][   T68]  ? strp_process+0xb0/0xb0
[  221.584623][   T68]  ? tcp_cleanup_rbuf+0x1c0/0x1c0
[  221.584629][   T68]  strp_read_sock+0x20f/0x2b0
[  221.584632][   T68]  ? strp_stop+0x50/0x50
[  221.584633][   T68]  ? __lock_release.isra.0+0x59/0x170
[  221.584638][   T68]  ? lockdep_hardirqs_on+0x84/0x130
[  221.584640][   T68]  ? __local_bh_enable_ip+0xa3/0x140
[  221.584644][   T68]  strp_work+0x9f/0xe0
[  221.584647][   T68]  process_one_work+0xd57/0x1390
[  221.584654][   T68]  ? pwq_dec_nr_in_flight+0x700/0x700
[  221.584657][   T68]  ? lock_acquire.part.0+0xbc/0x260
[  221.584663][   T68]  worker_thread+0x4d6/0xd40
[  221.584670][   T68]  ? rescuer_thread+0x1330/0x1330
[  221.584672][   T68]  kthread+0x30f/0x3f0
[  221.584675][   T68]  ? trace_irq_enable.constprop.0+0x13c/0x190
[  221.584679][   T68]  ? kthread_affine_node+0x150/0x150
[  221.584682][   T68]  ret_from_fork+0x472/0x6b0
[  221.584686][   T68]  ? arch_exit_to_user_mode_prepare.isra.0+0x140/0x140
[  221.584690][   T68]  ? __switch_to+0x538/0xcf0
[  221.584693][   T68]  ? kthread_affine_node+0x150/0x150
[  221.584697][   T68]  ret_from_fork_asm+0x11/0x20
[  221.584705][   T68]  </TASK>
[  240.361337][ T2279] iperf3 (2279) used greatest stack depth: 22544 bytes left
[  242.689056][ T2304] tun0: deleting peer with id 1, reason 1
[  242.737712][ T2305] tun1: deleting peer with id 1, reason 1
[  245.275649][ T2319] tun0: deleting peer with id 2, reason 1
[  245.323610][ T2320] tun2: deleting peer with id 2, reason 1
[  249.072860][   T10] tun0: deleting peer with id 4, reason 2
[  249.073411][   T10] tun0: deleting peer with id 3, reason 2
[  249.073635][   T10] tun0: deleting peer with id 5, reason 2
[  249.073838][   T10] tun0: deleting peer with id 6, reason 2
[  254.193851][   T29] tun3: deleting peer with id 3, reason 2
[  254.256637][   T10] tun4: deleting peer with id 4, reason 2
[  254.257643][   T29] tun5: deleting peer with id 5, reason 2
[  254.320634][   T72] tun6: deleting peer with id 6, reason 2