======================================
| [   18.785715][    C2]
| [   18.785716][    C2]
| [   18.785716][    C2] stack backtrace:
| [   18.785722][    C2] Tainted: [W]=WARN
[   18.785723][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.785724][    C2] Call Trace:
[   18.785725][    C2]  <IRQ>
[   18.785726][    C2]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.785730][    C2]  print_irq_inversion_bug.part.0.cold (kernel/locking/lockdep.c:4141)
[   18.785733][    C2]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   18.785736][    C2]  mark_lock (kernel/locking/lockdep.c:4769)
[   18.785737][    C2]  mark_usage (kernel/locking/lockdep.c:4658)
[   18.785739][    C2]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   18.785741][    C2]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.785743][    C2]  ? console_lock_spinning_enable (kernel/printk/printk.c:1902 (discriminator 2))
[   18.785745][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.785749][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.785751][    C2]  console_lock_spinning_enable (kernel/printk/printk.c:1902 (discriminator 2))
[   18.785752][    C2]  ? console_lock_spinning_enable (kernel/printk/printk.c:1902 (discriminator 2))
[   18.785754][    C2]  console_emit_next_record (kernel/printk/printk.c:3177)
[   18.785756][    C2]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.785758][    C2]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   18.785760][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.785761][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.785763][    C2]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.785766][    C2]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.785767][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.785769][    C2]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.785771][    C2]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.785773][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.785775][    C2]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   18.785777][    C2]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.785778][    C2]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.785780][    C2]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.785782][    C2]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.785784][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   18.785787][    C2]  _printk (kernel/printk/printk.c:2504)
[   18.785788][    C2]  ? snapshot_read.cold (user.c:?)
[   18.785790][    C2]  ? ___ratelimit (lib/ratelimit.c:97 (discriminator 3))
[   18.785793][    C2]  ? ovpn_netdev_write (./include/linux/netdevice.h:3107 (discriminator 3)) ovpn
[   18.785797][    C2]  ? idr_get_free (??:?)
[   18.785799][    C2] ovpn_recv.cold (drivers/net/ovpn/io.c:225 (discriminator 4)) ovpn
[   18.785802][    C2] ovpn_tcp_rcv (drivers/net/ovpn/tcp.c:148) ovpn
[   18.785805][    C2]  ? ovpn_tcp_write_space (drivers/net/ovpn/tcp.c:488 (discriminator 2)) ovpn
[   18.785807][    C2]  ? __copy_skb_header (net/core/skbuff.c:1564)
[   18.785810][    C2]  ? ovpn_tcp_disconnect (drivers/net/ovpn/tcp.c:467) ovpn
[   18.785812][    C2]  ? sock_queue_err_skb (net/core/skbuff.c:5498 (discriminator 3))
[   18.785814][    C2]  __strp_recv (net/strparser/strparser.c:309)
[   18.785818][    C2]  __tcp_read_sock (net/ipv4/tcp.c:1689)
[   18.785819][    C2]  ? strp_process (net/strparser/strparser.c:335)
[   18.785821][    C2]  ? __tcp_transmit_skb (net/ipv4/tcp_output.c:1716)
[   18.785823][    C2]  ? tcp_cleanup_rbuf (./include/linux/skbuff.h:2196)
[   18.785824][    C2]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   18.785826][    C2]  strp_read_sock (net/strparser/strparser.c:372)
[   18.785828][    C2]  ? strp_stop (net/strparser/strparser.c:527)
[   18.785830][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.785832][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.785834][    C2]  strp_data_ready (net/strparser/strparser.c:402 net/strparser/strparser.c:380)
[   18.785836][    C2] ovpn_tcp_data_ready (drivers/net/ovpn/tcp.c:478) ovpn
[   18.785839][    C2]  tcp_rcv_established (net/ipv4/tcp_input.c:6654)
[   18.785841][    C2]  ? __tcp_check_space (net/ipv4/tcp_input.c:6059 (discriminator 2))
[   18.785843][    C2]  ? tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2292 (discriminator 1))
[   18.785845][    C2]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   18.785847][    C2]  tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1862)
[   18.785849][    C2]  tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2296)
[   18.785852][    C2]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   18.785853][    C2]  ? tcp_add_backlog (./include/net/net_namespace.h:422 (discriminator 7))
[   18.785856][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.785857][    C2]  ? ip_local_deliver_finish (./include/linux/rcupdate.h:309 (discriminator 2) ./include/linux/rcupdate.h:849 (discriminator 2) net/ipv4/ip_input.c:240 (discriminator 2))
[   18.785859][    C2]  ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207)
[   18.785861][    C2]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6726 (discriminator 2))
[   18.785863][    C2]  ip_local_deliver_finish (net/ipv4/ip_input.c:241 (discriminator 1))
[   18.785865][    C2]  ip_local_deliver (./include/linux/netfilter.h:325 ./include/linux/netfilter.h:319 net/ipv4/ip_input.c:262)
[   18.785866][    C2]  ? ip_local_deliver_finish (net/ipv4/ip_input.c:232 (discriminator 42))
[   18.785868][    C2]  ? ip_rcv_finish_core (./include/linux/skbuff.h:1162 (discriminator 2) ./include/net/route.h:88 (discriminator 2) net/ipv4/ip_input.c:435 (discriminator 2))
[   18.785870][    C2]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6726 (discriminator 2))
[   18.785872][    C2]  ip_rcv (./include/linux/netfilter.h:325 ./include/linux/netfilter.h:319 net/ipv4/ip_input.c:612)
[   18.785874][    C2]  ? ip_local_deliver (./include/linux/rcupdate.h:878 (discriminator 3))
[   18.785876][    C2]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   18.785877][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.785879][    C2]  __netif_receive_skb_one_core (net/core/dev.c:6264)
[   18.785881][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.785882][    C2]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6726 (discriminator 2))
[   18.785884][    C2]  ? __netif_receive_skb_list_core (net/core/dev.c:6310)
[   18.785886][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.785889][    C2]  process_backlog (net/core/dev.c:6728)
[   18.785891][    C2]  __napi_poll (net/core/dev.c:7787)
[   18.785894][    C2]  net_rx_action (net/core/dev.c:7850 net/core/dev.c:8007)
[   18.785896][    C2]  ? __napi_poll (./include/net/gro.h:507)
[   18.785898][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   18.785901][    C2]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   18.785904][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.785906][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.785908][    C2]  handle_softirqs (kernel/softirq.c:645)
[   18.785910][    C2]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   18.785911][    C2]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   18.785913][    C2]  do_softirq (kernel/softirq.c:546 (discriminator 19) kernel/softirq.c:533 (discriminator 19))
[   18.785915][    C2]  </IRQ>
[   18.785915][    C2]  <TASK>
[   18.785916][    C2]  __local_bh_enable_ip (kernel/softirq.c:473)
[   18.785917][    C2] ovpn_tcp_sendmsg (drivers/net/ovpn/tcp.c:459) ovpn
[   18.785920][    C2]  ? ovpn_tcp_recvmsg (drivers/net/ovpn/tcp.c:180 (discriminator 1)) ovpn
[   18.785924][    C2]  __sys_sendto (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2281 (discriminator 4))
[   18.785926][    C2]  ? __ia32_sys_getpeername (net/socket.c:2235)
[   18.785930][    C2]  ? fput_close_sync (fs/file_table.c:617)
[   18.785932][    C2]  ? alloc_file_clone (fs/file_table.c:479)
[   18.785934][    C2]  __x64_sys_sendto (net/socket.c:2288 net/socket.c:2284 net/socket.c:2284)
[   18.785935][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   18.785938][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   18.785939][    C2]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:81 (discriminator 44))
[   18.785941][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.785942][    C2]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   18.785943][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.785945][    C2] RIP: 0033:0x7f3d3058654e
[   18.785948][    C2] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   18.785950][    C2] RSP: 002b:00007ffc54b91d20 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   18.785952][    C2] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3d3058654e
[   18.785953][    C2] RDX: 00000000000003ea RSI: 00007ffc54b91d90 RDI: 0000000000000005
[   18.785954][    C2] RBP: 00007ffc54b91d30 R08: 0000000000000000 R09: 0000000000000000
[   18.785955][    C2] R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffc54b926b8
[   18.785956][    C2] R13: 0000000000000008 R14: 00007f3d30871000 R15: 000000000040bda8
| [   18.785974][    C2] softirqs last disabled at (39025): do_softirq (kernel/softirq.c:546 (discriminator 19) kernel/softirq.c:533 (discriminator 19))
| [   18.785975][    C2] Preemption disabled at:
| [   18.785976][    C2] 0x0
| [   18.785980][    C2] Tainted: [W]=WARN
[   18.785980][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.785981][    C2] Call Trace:
[   18.785981][    C2]  <IRQ>
[   18.785982][    C2]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   18.785984][    C2]  __might_resched.cold (kernel/sched/core.c:9234)
[   18.785987][    C2]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   18.785990][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.785992][    C2]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   18.785994][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   18.785995][    C2]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.785997][    C2]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   18.785999][    C2]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   18.786001][    C2]  put_chars (drivers/char/virtio_console.c:1176)
[   18.786003][    C2]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   18.786005][    C2]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   18.786007][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5208)
[   18.786009][    C2]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   18.786011][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.786013][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.786015][    C2]  console_emit_next_record (kernel/printk/printk.c:3183)
[   18.786017][    C2]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   18.786018][    C2]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   18.786020][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.786022][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.786024][    C2]  console_flush_one_record (kernel/printk/printk.c:3268)
[   18.786026][    C2]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   18.786028][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.786030][    C2]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   18.786032][    C2]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   18.786033][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.786035][    C2]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   18.786037][    C2]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   18.786038][    C2]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   18.786040][    C2]  vprintk_emit (kernel/printk/printk.c:2479)
[   18.786043][    C2]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   18.786044][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   18.786047][    C2]  _printk (kernel/printk/printk.c:2504)
[   18.786048][    C2]  ? snapshot_read.cold (user.c:?)
[   18.786050][    C2]  ? ___ratelimit (lib/ratelimit.c:97 (discriminator 3))
[   18.786052][    C2]  ? ovpn_netdev_write (./include/linux/netdevice.h:3107 (discriminator 3)) ovpn
[   18.786054][    C2]  ? idr_get_free (??:?)
[   18.786057][    C2] ovpn_recv.cold (drivers/net/ovpn/io.c:225 (discriminator 4)) ovpn
[   18.786059][    C2] ovpn_tcp_rcv (drivers/net/ovpn/tcp.c:148) ovpn
[   18.786062][    C2]  ? ovpn_tcp_write_space (drivers/net/ovpn/tcp.c:488 (discriminator 2)) ovpn
[   18.786064][    C2]  ? __copy_skb_header (net/core/skbuff.c:1564)
[   18.786066][    C2]  ? ovpn_tcp_disconnect (drivers/net/ovpn/tcp.c:467) ovpn
[   18.786069][    C2]  ? sock_queue_err_skb (net/core/skbuff.c:5498 (discriminator 3))
[   18.786071][    C2]  __strp_recv (net/strparser/strparser.c:309)
[   18.786074][    C2]  __tcp_read_sock (net/ipv4/tcp.c:1689)
[   18.786075][    C2]  ? strp_process (net/strparser/strparser.c:335)
[   18.786077][    C2]  ? __tcp_transmit_skb (net/ipv4/tcp_output.c:1716)
[   18.786079][    C2]  ? tcp_cleanup_rbuf (./include/linux/skbuff.h:2196)
[   18.786080][    C2]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   18.786082][    C2]  strp_read_sock (net/strparser/strparser.c:372)
[   18.786084][    C2]  ? strp_stop (net/strparser/strparser.c:527)
[   18.786086][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.786088][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   18.786090][    C2]  strp_data_ready (net/strparser/strparser.c:402 net/strparser/strparser.c:380)
[   18.786092][    C2] ovpn_tcp_data_ready (drivers/net/ovpn/tcp.c:478) ovpn
[   18.786095][    C2]  tcp_rcv_established (net/ipv4/tcp_input.c:6654)
[   18.786097][    C2]  ? __tcp_check_space (net/ipv4/tcp_input.c:6059 (discriminator 2))
[   18.786099][    C2]  ? tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2292 (discriminator 1))
[   18.786101][    C2]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   18.786103][    C2]  tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1862)
[   18.786105][    C2]  tcp_v4_rcv (net/ipv4/tcp_ipv4.c:2296)
[   18.786107][    C2]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   18.786109][    C2]  ? tcp_add_backlog (./include/net/net_namespace.h:422 (discriminator 7))
[   18.786111][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.786113][    C2]  ? ip_local_deliver_finish (./include/linux/rcupdate.h:309 (discriminator 2) ./include/linux/rcupdate.h:849 (discriminator 2) net/ipv4/ip_input.c:240 (discriminator 2))
[   18.786115][    C2]  ip_protocol_deliver_rcu (net/ipv4/ip_input.c:207)
[   18.786116][    C2]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6726 (discriminator 2))
[   18.786118][    C2]  ip_local_deliver_finish (net/ipv4/ip_input.c:241 (discriminator 1))
[   18.786120][    C2]  ip_local_deliver (./include/linux/netfilter.h:325 ./include/linux/netfilter.h:319 net/ipv4/ip_input.c:262)
[   18.786122][    C2]  ? ip_local_deliver_finish (net/ipv4/ip_input.c:232 (discriminator 42))
[   18.786123][    C2]  ? ip_rcv_finish_core (./include/linux/skbuff.h:1162 (discriminator 2) ./include/net/route.h:88 (discriminator 2) net/ipv4/ip_input.c:435 (discriminator 2))
[   18.786126][    C2]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6726 (discriminator 2))
[   18.786127][    C2]  ip_rcv (./include/linux/netfilter.h:325 ./include/linux/netfilter.h:319 net/ipv4/ip_input.c:612)
[   18.786129][    C2]  ? ip_local_deliver (./include/linux/rcupdate.h:878 (discriminator 3))
[   18.786131][    C2]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   18.786132][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   18.786134][    C2]  __netif_receive_skb_one_core (net/core/dev.c:6264)
[   18.786136][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   18.786138][    C2]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6726 (discriminator 2))
[   18.786140][    C2]  ? __netif_receive_skb_list_core (net/core/dev.c:6310)
[   18.786142][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.786144][    C2]  process_backlog (net/core/dev.c:6728)
[   18.786147][    C2]  __napi_poll (net/core/dev.c:7787)
[   18.786149][    C2]  net_rx_action (net/core/dev.c:7850 net/core/dev.c:8007)
[   18.786152][    C2]  ? __napi_poll (./include/net/gro.h:507)
[   18.786153][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   18.786156][    C2]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   18.786158][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.786160][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   18.786162][    C2]  handle_softirqs (kernel/softirq.c:645)
[   18.786164][    C2]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   18.786165][    C2]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   18.786167][    C2]  do_softirq (kernel/softirq.c:546 (discriminator 19) kernel/softirq.c:533 (discriminator 19))
[   18.786168][    C2]  </IRQ>
[   18.786169][    C2]  <TASK>
[   18.786169][    C2]  __local_bh_enable_ip (kernel/softirq.c:473)
[   18.786171][    C2] ovpn_tcp_sendmsg (drivers/net/ovpn/tcp.c:459) ovpn
[   18.786174][    C2]  ? ovpn_tcp_recvmsg (drivers/net/ovpn/tcp.c:180 (discriminator 1)) ovpn
[   18.786177][    C2]  __sys_sendto (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2281 (discriminator 4))
[   18.786179][    C2]  ? __ia32_sys_getpeername (net/socket.c:2235)
[   18.786183][    C2]  ? fput_close_sync (fs/file_table.c:617)
[   18.786184][    C2]  ? alloc_file_clone (fs/file_table.c:479)
[   18.786186][    C2]  __x64_sys_sendto (net/socket.c:2288 net/socket.c:2284 net/socket.c:2284)
[   18.786187][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   18.786189][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   18.786190][    C2]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:81 (discriminator 44))
[   18.786191][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   18.786193][    C2]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   18.786194][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   18.786195][    C2] RIP: 0033:0x7f3d3058654e
[   18.786197][    C2] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   18.786198][    C2] RSP: 002b:00007ffc54b91d20 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[   18.786199][    C2] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3d3058654e
[   18.786200][    C2] RDX: 00000000000003ea RSI: 00007ffc54b91d90 RDI: 0000000000000005
[   18.786200][    C2] RBP: 00007ffc54b91d30 R08: 0000000000000000 R09: 0000000000000000
[   18.786201][    C2] R10: 0000000000004000 R11: 0000000000000202 R12: 00007ffc54b926b8
[   18.786202][    C2] R13: 0000000000000008 R14: 00007f3d30871000 R15: 000000000040bda8
| [   24.389022][  T479] softirqs last disabled at (0): 0x0
| [   24.389024][  T479] Preemption disabled at:
| [   24.389024][  T479] 0x0
| [   24.389033][  T479] Tainted: [W]=WARN
[   24.389034][  T479] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.389036][  T479] Call Trace:
[   24.389037][  T479]  <TASK>
[   24.389038][  T479]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.389044][  T479]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.389048][  T479]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.389052][  T479]  ? prb_next_reserve_seq (kernel/printk/printk_ringbuffer.c:2128)
[   24.389054][  T479]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.389058][  T479]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   24.389062][  T479]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   24.389064][  T479]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.389069][  T479]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   24.389071][  T479]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.389073][  T479]  put_chars (drivers/char/virtio_console.c:1176)
[   24.389075][  T479]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   24.389076][  T479]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.389078][  T479]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   24.389081][  T479]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.389085][  T479]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.389087][  T479]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   24.389088][  T479]  ? vsnprintf (lib/vsprintf.c:2900)
[   24.389091][  T479]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   24.389093][  T479]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.389095][  T479]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.389097][  T479]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.389100][  T479]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.389102][  T479]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.389103][  T479]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.389105][  T479]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.389107][  T479]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.389109][  T479]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   24.389110][  T479]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.389113][  T479]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.389115][  T479]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.389117][  T479]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.389119][  T479]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.389120][  T479]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.389122][  T479]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   24.389124][  T479]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   24.389125][  T479]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   24.389127][  T479]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.389129][  T479]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.389131][  T479]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.389133][  T479]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.389136][  T479]  _printk (kernel/printk/printk.c:2504)
[   24.389140][  T479]  ? snapshot_read.cold (user.c:?)
[   24.389141][  T479]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   24.389144][  T479]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   24.389146][  T479]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   24.389148][  T479]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   24.389150][  T479]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[   24.389153][  T479]  ? exit_notify (kernel/exit.c:780)
[   24.389155][  T479]  __x64_sys_exit (kernel/exit.c:1118 kernel/exit.c:1116 kernel/exit.c:1116)
[   24.389156][  T479]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:61)
[   24.389159][  T479]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.389161][  T479]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   24.389163][  T479]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   24.389165][  T479] RIP: 0033:0x7fd135ac1c49
[   24.389167][  T479] Code: Unable to access opcode bytes at 0x7fd135ac1c1f.

Code starting with the faulting instruction
===========================================
[   24.389168][  T479] RSP: 002b:00007fd135280e60 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
[   24.389172][  T479] RAX: ffffffffffffffda RBX: 00007fd1352816c0 RCX: 00007fd135ac1c49
[   24.389173][  T479] RDX: 0000000000000000 RSI: 0000000000801000 RDI: 0000000000000000
[   24.389174][  T479] RBP: 00007fd135280f70 R08: 0000000000000001 R09: 00007fd1352816c0
[   24.389175][  T479] R10: 0000000000000008 R11: 0000000000000246 R12: 00007fd134a81000


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:console_lock_spinning_enable
__kmalloc_noprof:put_chars:hvc_console_print:console_emit_next_record:console_flush_one_record
do_softirq:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print