[  134.122104][   T12] tun0: no available key for peer 4, key-id: 0
[  134.122350][   T12] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u16:0/12
[  134.122570][   T12] caller is ovpn_recv+0x193/0x2b0 [ovpn]
[  134.122695][   T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 7.0.0-rc6-virtme #1 PREEMPT(full) 
[  134.122699][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  134.122701][   T12] Workqueue: kstrp strp_work
[  134.122709][   T12] Call Trace:
[  134.122711][   T12]  <TASK>
[  134.122712][   T12]  dump_stack_lvl+0x6f/0xa0
[  134.122719][   T12]  check_preemption_disabled+0xdb/0xf0
[  134.122724][   T12]  ovpn_recv+0x193/0x2b0 [ovpn]
[  134.122728][   T12]  ovpn_tcp_rcv+0x279/0x910 [ovpn]
[  134.122733][   T12]  ? ovpn_tcp_write_space+0x2e0/0x2e0 [ovpn]
[  134.122737][   T12]  ? __copy_skb_header+0xb7/0x440
[  134.122742][   T12]  ? ovpn_tcp_disconnect+0x10/0x10 [ovpn]
[  134.122744][   T12]  ? __alloc_skb+0x5c0/0x5f0
[  134.122748][   T12]  __strp_recv+0x20f/0x1c30
[  134.122753][   T12]  ? rcu_lockdep_current_cpu_online+0x39/0x1b0
[  134.122759][   T12]  __tcp_read_sock+0x1c7/0x850
[  134.122763][   T12]  ? strp_process+0xb0/0xb0
[  134.122767][   T12]  ? tcp_cleanup_rbuf+0x1c0/0x1c0
[  134.122772][   T12]  strp_read_sock+0x20f/0x2b0
[  134.122775][   T12]  ? strp_stop+0x50/0x50
[  134.122777][   T12]  ? __lock_release.isra.0+0x6b/0x1a0
[  134.122782][   T12]  ? lockdep_hardirqs_on+0x8c/0x130
[  134.122783][   T12]  ? __local_bh_enable_ip+0xa5/0x140
[  134.122787][   T12]  strp_work+0x9f/0xe0
[  134.122790][   T12]  process_one_work+0xdf5/0x1410
[  134.122797][   T12]  ? pwq_dec_nr_in_flight+0x710/0x710
[  134.122799][   T12]  ? lock_acquire.part.0+0xbc/0x260
[  134.122806][   T12]  worker_thread+0x4f1/0xd60
[  134.122812][   T12]  ? rescuer_thread+0x1320/0x1320
[  134.122815][   T12]  kthread+0x364/0x460
[  134.122817][   T12]  ? trace_irq_enable.constprop.0+0x9b/0x180
[  134.122821][   T12]  ? kthread_affine_node+0x330/0x330
[  134.122824][   T12]  ret_from_fork+0x474/0x6b0
[  134.122828][   T12]  ? arch_exit_to_user_mode_prepare.isra.0+0x140/0x140
[  134.122831][   T12]  ? __switch_to+0x540/0xd10
[  134.122835][   T12]  ? kthread_affine_node+0x330/0x330
[  134.122837][   T12]  ret_from_fork_asm+0x11/0x20
[  134.122846][   T12]  </TASK>
[  134.193143][    C2] tun0: no available key for peer 5, key-id: 0
[  142.542032][ T1457] iperf3 (1457) used greatest stack depth: 23104 bytes left
[  142.678708][ T1417] tun4: deleting peer with id 13, reason 4
[  142.679427][ T1420] tun5: deleting peer with id 14, reason 4
[  142.679920][ T1414] tun3: deleting peer with id 12, reason 4
[  142.679936][ T1423] tun0: deleting peer with id 6, reason 4
[  142.680470][ T1411] tun2: deleting peer with id 11, reason 4
[  142.680623][ T1424] tun6: deleting peer with id 15, reason 4
[  142.681178][ T1408] tun1: deleting peer with id 10, reason 4
[  142.691790][ T1423] tun0: deleting peer with id 5, reason 4
[  142.695385][ T1423] tun0: deleting peer with id 4, reason 4
[  142.705004][ T1423] tun0: deleting peer with id 3, reason 4
[  142.715925][ T1423] tun0: deleting peer with id 2, reason 4
[  142.723911][ T1423] tun0: deleting peer with id 1, reason 4