[  136.585454][ T1421] tun0: no available key for peer 4, key-id: 0
[  136.585754][ T1421] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u16:2/1421
[  136.585976][ T1421] caller is ovpn_recv+0x192/0x2a0 [ovpn]
[  136.586113][ T1421] CPU: 1 UID: 0 PID: 1421 Comm: kworker/u16:2 Not tainted 7.0.0-rc5-virtme #1 PREEMPT(full) 
[  136.586116][ T1421] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  136.586118][ T1421] Workqueue: kstrp strp_work
[  136.586126][ T1421] Call Trace:
[  136.586128][ T1421]  <TASK>
[  136.586130][ T1421]  dump_stack_lvl+0x6f/0xa0
[  136.586137][ T1421]  check_preemption_disabled+0xdb/0xf0
[  136.586142][ T1421]  ovpn_recv+0x192/0x2a0 [ovpn]
[  136.586148][ T1421]  ovpn_tcp_rcv+0x277/0x920 [ovpn]
[  136.586152][ T1421]  ? ovpn_tcp_write_space+0x2b0/0x2b0 [ovpn]
[  136.586157][ T1421]  ? ovpn_tcp_disconnect+0x10/0x10 [ovpn]
[  136.586160][ T1421]  ? skb_pp_frag_ref+0x440/0x440
[  136.586165][ T1421]  __strp_recv+0x1ee/0x1b70
[  136.586170][ T1421]  ? rcu_lockdep_current_cpu_online+0x39/0x1b0
[  136.586181][ T1421]  __tcp_read_sock+0x1a1/0x7c0
[  136.586185][ T1421]  ? strp_process+0xb0/0xb0
[  136.586188][ T1421]  ? tcp_cleanup_rbuf+0x1c0/0x1c0
[  136.586194][ T1421]  strp_read_sock+0x20f/0x2b0
[  136.586197][ T1421]  ? strp_stop+0x50/0x50
[  136.586199][ T1421]  ? __lock_release.isra.0+0x59/0x170
[  136.586204][ T1421]  ? lockdep_hardirqs_on+0x84/0x130
[  136.586206][ T1421]  ? __local_bh_enable_ip+0xa3/0x140
[  136.586210][ T1421]  strp_work+0x9f/0xe0
[  136.586213][ T1421]  process_one_work+0xdf6/0x1410
[  136.586220][ T1421]  ? pwq_dec_nr_in_flight+0x700/0x700
[  136.586222][ T1421]  ? lock_acquire.part.0+0xbc/0x260
[  136.586229][ T1421]  worker_thread+0x4eb/0xd60
[  136.586233][ T1421]  ? rescuer_thread+0x1340/0x1340
[  136.586235][ T1421]  ? __kthread_parkme+0xb3/0x200
[  136.586240][ T1421]  ? rescuer_thread+0x1340/0x1340
[  136.586242][ T1421]  kthread+0x30f/0x3f0
[  136.586245][ T1421]  ? trace_irq_enable.constprop.0+0x13c/0x190
[  136.586248][ T1421]  ? kthread_affine_node+0x150/0x150
[  136.586251][ T1421]  ret_from_fork+0x472/0x6b0
[  136.586256][ T1421]  ? arch_exit_to_user_mode_prepare.isra.0+0x140/0x140
[  136.586259][ T1421]  ? __switch_to+0x538/0xcf0
[  136.586263][ T1421]  ? kthread_affine_node+0x150/0x150
[  136.586266][ T1421]  ret_from_fork_asm+0x11/0x20
[  136.586274][ T1421]  </TASK>
[  136.657411][    C2] tun0: no available key for peer 5, key-id: 0
[  136.726704][    C2] tun0: no available key for peer 6, key-id: 0

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