[  838.162058][    C2] tun0: no available key for peer 1, key-id: 0
[  838.229738][    C2] tun0: no available key for peer 2, key-id: 0
[  838.290946][    C0] tun0: no available key for peer 3, key-id: 0
[  838.372953][   T12] tun0: no available key for peer 4, key-id: 0
[  838.373257][   T12] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u16:0/12
[  838.373461][   T12] caller is ovpn_recv+0x193/0x2b0 [ovpn]
[  838.373584][   T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 7.0.0-rc6-virtme #1 PREEMPT(full) 
[  838.373588][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  838.373590][   T12] Workqueue: kstrp strp_work
[  838.373598][   T12] Call Trace:
[  838.373600][   T12]  <TASK>
[  838.373601][   T12]  dump_stack_lvl+0x6f/0xa0
[  838.373608][   T12]  check_preemption_disabled+0xdb/0xf0
[  838.373613][   T12]  ovpn_recv+0x193/0x2b0 [ovpn]
[  838.373617][   T12]  ovpn_tcp_rcv+0x279/0x910 [ovpn]
[  838.373622][   T12]  ? ovpn_tcp_write_space+0x2e0/0x2e0 [ovpn]
[  838.373625][   T12]  ? __copy_skb_header+0xb7/0x440
[  838.373629][   T12]  ? ovpn_tcp_disconnect+0x10/0x10 [ovpn]
[  838.373632][   T12]  ? skb_copy_expand+0x260/0x420
[  838.373635][   T12]  __strp_recv+0x20f/0x1c30
[  838.373640][   T12]  ? rcu_lockdep_current_cpu_online+0x39/0x1b0
[  838.373646][   T12]  __tcp_read_sock+0x1c7/0x850
[  838.373649][   T12]  ? strp_process+0xb0/0xb0
[  838.373653][   T12]  ? tcp_cleanup_rbuf+0x1c0/0x1c0
[  838.373658][   T12]  strp_read_sock+0x20f/0x2b0
[  838.373662][   T12]  ? strp_stop+0x50/0x50
[  838.373664][   T12]  ? __lock_release.isra.0+0x6b/0x1a0
[  838.373672][   T12]  ? lockdep_hardirqs_on+0x8c/0x130
[  838.373675][   T12]  ? __local_bh_enable_ip+0xa5/0x140
[  838.373679][   T12]  strp_work+0x9f/0xe0
[  838.373681][   T12]  process_one_work+0xdf5/0x1410
[  838.373689][   T12]  ? pwq_dec_nr_in_flight+0x710/0x710
[  838.373691][   T12]  ? lock_acquire.part.0+0xbc/0x260
[  838.373697][   T12]  worker_thread+0x4f1/0xd60
[  838.373704][   T12]  ? rescuer_thread+0x1320/0x1320
[  838.373706][   T12]  kthread+0x364/0x460
[  838.373709][   T12]  ? trace_irq_enable.constprop.0+0x9b/0x180
[  838.373713][   T12]  ? kthread_affine_node+0x330/0x330
[  838.373715][   T12]  ret_from_fork+0x474/0x6b0
[  838.373719][   T12]  ? arch_exit_to_user_mode_prepare.isra.0+0x140/0x140
[  838.373723][   T12]  ? __switch_to+0x540/0xd10
[  838.373726][   T12]  ? kthread_affine_node+0x330/0x330
[  838.373729][   T12]  ret_from_fork_asm+0x11/0x20
[  838.373736][   T12]  </TASK>
[  849.414412][ T6400] tun1: deleting peer with id 10, reason 4
[  849.414617][ T6403] tun2: deleting peer with id 11, reason 4
[  849.414773][ T6419] tun0: deleting peer with id 6, reason 4
[  849.415952][ T6407] tun3: deleting peer with id 12, reason 4
[  849.417987][ T6410] tun4: deleting peer with id 13, reason 4
[  849.420910][ T6419] tun0: deleting peer with id 5, reason 4
[  849.421969][ T6413] tun5: deleting peer with id 14, reason 4
[  849.421996][ T6416] tun6: deleting peer with id 15, reason 4
[  849.427532][ T6419] tun0: deleting peer with id 4, reason 4
[  849.436461][ T6419] tun0: deleting peer with id 3, reason 4
[  849.446448][ T6419] tun0: deleting peer with id 2, reason 4
[  849.453478][ T6419] tun0: deleting peer with id 1, reason 4