[    2.487758] ------------[ cut here ]------------
[    2.487816] workqueue: ovpn is using neither WQ_PERCPU or WQ_UNBOUND. Setting WQ_PERCPU.
[    2.487857] WARNING: kernel/workqueue.c:5851 at __alloc_workqueue+0x6de/0x750, CPU#0: modprobe/201
[    2.487915] Modules linked in: ovpn(+) ip6_udp_tunnel udp_tunnel
[    2.487956] CPU: 0 UID: 0 PID: 201 Comm: modprobe Not tainted 7.2.0-rc6-virtme #1 PREEMPT(lazy) 
[    2.488004] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.488045] RIP: 0010:__alloc_workqueue+0x6e2/0x750
[    2.488073] Code: 48 89 b0 90 00 00 00 48 89 16 48 89 51 08 e9 7b fd ff ff 90 0f 0b 90 45 31 ed e9 ed fd ff ff 48 8d 3d 82 1b 4b 01 48 8b 34 24 <67> 48 0f b9 3a 80 cf 01 e9 a3 f9 ff ff 49 3b 45 08 0f 85 49 fe ff
[    2.488173] RSP: 0018:ff67745d0101bc68 EFLAGS: 00010246
[    2.488197] RAX: 0000000000000004 RBX: 0000000000000000 RCX: 0000000000000004
[    2.488236] RDX: 0000000000000000 RSI: ff4738cec1c550b8 RDI: ffffffffaea6b5f0
[    2.488283] RBP: ffffffffc0584c06 R08: ffffffffc0584c0a R09: 0000000000000000
[    2.488321] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[    2.488355] R13: ff4738cec1c55000 R14: ff67745d0101bcb8 R15: 0000000000000000
[    2.488399] FS:  00007f5438fb8bc0(0000) GS:ff4738cf4fc54000(0000) knlGS:0000000000000000
[    2.488442] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.488480] CR2: 000055e8f6030120 CR3: 0000000002c5e005 CR4: 0000000000771ef0
[    2.488520] PKRU: 55555554
[    2.488532] Call Trace:
[    2.488549]  <TASK>
[    2.488563]  ? udp_tunnel_nic_cleanup_module+0xc90/0xc90 [udp_tunnel]
[    2.488600]  alloc_workqueue_noprof+0x57/0x70
[    2.488629]  ovpn_init+0x1f/0xa0 [ovpn]
[    2.488653]  do_one_initcall+0x8b/0x250
[    2.488678]  do_init_module+0x6a/0x260
[    2.488703]  init_module_from_file+0xbd/0x110
[    2.488731]  idempotent_init_module+0x23a/0x360
[    2.488760]  __x64_sys_finit_module+0x6d/0xd0
[    2.488791]  do_syscall_64+0x104/0x520
[    2.488819]  entry_SYSCALL_64_after_hwframe+0x4b/0x53
[    2.488850] RIP: 0033:0x7f54390ae37d
[    2.488870] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4b aa 0f 00 f7 d8 64 89 01 48
[    2.488971] RSP: 002b:00007ffd9f3f84f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    2.489017] RAX: ffffffffffffffda RBX: 000055e9246d69b0 RCX: 00007f54390ae37d
[    2.489057] RDX: 0000000000000000 RSI: 000055e8f6033ffd RDI: 0000000000000007
[    2.489100] RBP: 00007ffd9f3f8590 R08: 0000000000000000 R09: 0000000000000000
[    2.489141] R10: 0000000000000000 R11: 0000000000000246 R12: 000055e8f6033ffd
[    2.489184] R13: 000055e9246d6ad0 R14: 0000000000040000 R15: 0000000000000000
[    2.489226]  </TASK>
[    2.489241] ---[ end trace 0000000000000000 ]---
[    6.188781] ip (311) used greatest stack depth: 12272 bytes left
[   11.467348] tun0: no available key for peer 4, key-id: 0
[   11.476870] tun0: no available key for peer 5, key-id: 0
[   17.825521] iperf3 (607) used greatest stack depth: 11872 bytes left
[   18.217049] tun0: deleting peer with id 1, reason 1
[   18.234751] tun1: deleting peer with id 1, reason 1
[   20.353600] tun0: deleting peer with id 2, reason 1
[   20.371156] tun2: deleting peer with id 2, reason 1
[   25.551816] tun0: deleting peer with id 4, reason 2
[   25.551892] tun0: deleting peer with id 3, reason 2
[   25.551932] tun0: deleting peer with id 5, reason 2
[   25.551967] tun0: deleting peer with id 6, reason 2
[   30.542822] tun6: deleting peer with id 6, reason 2
[   30.542823] tun3: deleting peer with id 3, reason 2
[   30.543015] tun5: deleting peer with id 5, reason 2
[   30.543411] tun4: deleting peer with id 4, reason 2