[  596.602353][    C2] tun0: no available key for peer 1, key-id: 0
[  596.999678][    C2] tun0: no available key for peer 5, key-id: 0
[  597.122726][   T12] tun0: no available key for peer 6, key-id: 0
[  597.123142][   T12] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u16:0/12
[  597.123353][   T12] caller is ovpn_recv+0x193/0x2b0 [ovpn]
[  597.123491][   T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 7.1.0-rc1-virtme #1 PREEMPT(full) 
[  597.123494][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  597.123496][   T12] Workqueue: kstrp strp_work
[  597.123505][   T12] Call Trace:
[  597.123507][   T12]  <TASK>
[  597.123509][   T12]  dump_stack_lvl+0x6f/0xa0
[  597.123515][   T12]  check_preemption_disabled+0xdb/0xf0
[  597.123520][   T12]  ovpn_recv+0x193/0x2b0 [ovpn]
[  597.123528][   T12]  ovpn_tcp_rcv+0x279/0x910 [ovpn]
[  597.123533][   T12]  ? ovpn_tcp_write_space+0x2e0/0x2e0 [ovpn]
[  597.123537][   T12]  ? __copy_skb_header+0xb7/0x510
[  597.123542][   T12]  ? ovpn_tcp_disconnect+0x10/0x10 [ovpn]
[  597.123545][   T12]  ? csum_and_copy_from_iter_full+0xb00/0x1f70
[  597.123549][   T12]  __strp_recv+0x20f/0x1c30
[  597.123556][   T12]  ? rcu_lockdep_current_cpu_online+0x39/0x1b0
[  597.123562][   T12]  __tcp_read_sock+0x1c7/0x850
[  597.123566][   T12]  ? strp_process+0xb0/0xb0
[  597.123570][   T12]  ? tcp_cleanup_rbuf+0x1c0/0x1c0
[  597.123576][   T12]  strp_read_sock+0x20f/0x2b0
[  597.123579][   T12]  ? strp_stop+0x50/0x50
[  597.123581][   T12]  ? __lock_release.isra.0+0x6b/0x1a0
[  597.123586][   T12]  ? lockdep_hardirqs_on+0x8c/0x130
[  597.123588][   T12]  ? __local_bh_enable_ip+0xa5/0x140
[  597.123591][   T12]  strp_work+0x9f/0xe0
[  597.123594][   T12]  process_one_work+0xdf5/0x1410
[  597.123603][   T12]  ? pwq_dec_nr_in_flight+0x710/0x710
[  597.123606][   T12]  ? lock_acquire.part.0+0xbc/0x260
[  597.123615][   T12]  worker_thread+0x4f1/0xd60
[  597.123624][   T12]  ? rescuer_thread+0x1320/0x1320
[  597.123626][   T12]  kthread+0x364/0x460
[  597.123629][   T12]  ? trace_irq_enable.constprop.0+0x9b/0x180
[  597.123632][   T12]  ? kthread_affine_node+0x330/0x330
[  597.123635][   T12]  ret_from_fork+0x474/0x6b0
[  597.123639][   T12]  ? arch_exit_to_user_mode_prepare.isra.0+0x120/0x120
[  597.123642][   T12]  ? __switch_to+0x5a3/0xe00
[  597.123645][   T12]  ? kthread_affine_node+0x330/0x330
[  597.123647][   T12]  ret_from_fork_asm+0x11/0x20
[  597.123655][   T12]  </TASK>
[  612.908832][ T8715] tun3: deleting peer with id 3, reason 4
[  612.908945][ T8725] tun5: deleting peer with id 5, reason 4
[  612.909416][ T8720] tun4: deleting peer with id 4, reason 4
[  612.910531][ T8710] tun2: deleting peer with id 2, reason 4
[  612.911866][ T8705] tun1: deleting peer with id 1, reason 4
[  612.916054][ T8732] tun0: deleting peer with id 6, reason 4
[  612.916207][ T8730] tun6: deleting peer with id 6, reason 4
[  612.927665][ T8732] tun0: deleting peer with id 5, reason 4
[  612.933022][ T8732] tun0: deleting peer with id 4, reason 4
[  612.937001][ T8732] tun0: deleting peer with id 3, reason 4
[  612.944004][ T8732] tun0: deleting peer with id 2, reason 4
[  612.951984][ T8732] tun0: deleting peer with id 1, reason 4