======================================
| [  618.345923][    C1]    entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
| [  618.346048][    C1]
| [  618.346098][    C1]
| [  618.346098][    C1] stack backtrace:
[  618.346281][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  618.346283][    C1] Call Trace:
[  618.346284][    C1]  <IRQ>
[  618.346285][    C1]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[  618.346288][    C1]  print_irq_inversion_bug.part.0.cold (kernel/locking/lockdep.c:4125)
[  618.346291][    C1]  mark_lock_irq (kernel/locking/lockdep.c:4079 kernel/locking/lockdep.c:4158 kernel/locking/lockdep.c:4294)
[  618.346295][    C1]  mark_lock (kernel/locking/lockdep.c:4753)
[  618.346296][    C1]  mark_usage (kernel/locking/lockdep.c:4642)
[  618.346298][    C1]  __lock_acquire (kernel/locking/lockdep.c:5191)
[  618.346299][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  618.346301][    C1]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  618.346303][    C1]  ? ipv6_get_lladdr (net/ipv6/addrconf.c:1941)
[  618.346305][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  618.346308][    C1]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  618.346310][    C1]  _raw_read_lock_bh (./include/linux/rwlock_api_smp.h:192 (discriminator 3) kernel/locking/spinlock.c:256 (discriminator 3))
[  618.346311][    C1]  ? ipv6_get_lladdr (net/ipv6/addrconf.c:1941)
[  618.346313][    C1]  ipv6_get_lladdr (net/ipv6/addrconf.c:1941)
[  618.346316][    C1]  ndisc_send_ns (net/ipv6/ndisc.c:662)
[  618.346317][    C1]  ? __ipv6_chk_addr_and_flags (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) net/ipv6/addrconf.c:2015 (discriminator 2))
[  618.346319][    C1]  ? ndisc_parse_options (net/ipv6/ndisc.c:285)
[  618.346321][    C1]  ? __ipv6_chk_addr_and_flags (./include/linux/rcupdate.h:871 net/ipv6/addrconf.c:2015)
[  618.346323][    C1]  ndisc_solicit (net/ipv6/ndisc.c:762)
[  618.346330][    C1]  ? ndisc_send_ns (net/ipv6/ndisc.c:672)
[  618.346332][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  618.346333][    C1]  ? neigh_probe (net/core/neighbour.c:1094)
[  618.346335][    C1]  neigh_probe (net/core/neighbour.c:1096)
[  618.346337][    C1]  __neigh_event_send (net/core/neighbour.c:1276)
[  618.346338][    C1]  ? warn_bogus_irq_restore (kernel/locking/irqflag-debug.c:8)
[  618.346340][    C1]  ? ___neigh_create (./include/linux/spinlock.h:396 net/core/neighbour.c:724)
[  618.346343][    C1]  neigh_resolve_output (./include/net/neighbour.h:480 ./include/net/neighbour.h:486 ./include/net/neighbour.h:484 net/core/neighbour.c:1603)
[  618.346345][    C1]  ip6_finish_output2 (./include/net/neighbour.h:560 (discriminator 3) net/ipv6/ip6_output.c:136 (discriminator 3))
[  618.346347][    C1]  ? ip6_xmit (net/ipv6/ip6_output.c:328)
[  618.346348][    C1]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  618.346350][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  618.346352][    C1]  ? ip6_mtu (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:869 (discriminator 2) ./include/net/ip6_route.h:382 (discriminator 2) net/ipv6/route.c:3288 (discriminator 2))
[  618.346354][    C1]  ip6_finish_output (net/ipv6/ip6_output.c:208 net/ipv6/ip6_output.c:219)
[  618.346356][    C1]  ip6_output (./include/linux/netfilter.h:307 net/ipv6/ip6_output.c:246)
[  618.346358][    C1]  ? ip6_finish_output (./include/linux/skbuff.h:1167)
[  618.346360][    C1]  ? l3mdev_l3_out.constprop.0 (./include/linux/rcupdate.h:871 ./include/net/l3mdev.h:222)
[  618.346363][    C1]  ip6_send_skb (net/ipv6/ip6_output.c:2018)
[  618.346365][    C1]  icmp6_send (net/ipv6/icmp.c:827)
[  618.346366][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  618.346369][    C1]  ? icmpv6_push_pending_frames (net/ipv6/icmp.c:292 (discriminator 1))
[  618.346371][    C1]  ? __local_bh_enable_ip (kernel/softirq.c:455)
[  618.346373][    C1]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  618.346376][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  618.346378][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  618.346380][    C1]  ? tcf_qevent_handle (./include/net/sch_generic.h:1252)
[  618.346383][    C1]  udpv6_rcv (./include/linux/icmpv6.h:24 net/ipv6/udp.c:1159)
[  618.346385][    C1]  ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:479)
[  618.346389][    C1]  ip6_input_finish (net/ipv6/ip6_input.c:534)
[  618.346390][    C1]  ip6_input (./include/linux/netfilter.h:318 ./include/linux/netfilter.h:312 net/ipv6/ip6_input.c:545)
[  618.346392][    C1]  ? ip6_input_finish (net/ipv6/ip6_input.c:527 (discriminator 46))
[  618.346394][    C1]  ? ip6_rcv_core (./include/linux/skbuff.h:3394 net/ipv6/ip6_input.c:332)
[  618.346397][    C1]  ipv6_rcv (./include/net/dst.h:480 (discriminator 4) net/ipv6/ip6_input.c:119 (discriminator 4) ./include/linux/netfilter.h:318 (discriminator 4) ./include/linux/netfilter.h:312 (discriminator 4) net/ipv6/ip6_input.c:351 (discriminator 4))
[  618.346399][    C1]  ? ip6_rcv_core (net/ipv6/ip6_input.c:211 (discriminator 96))
[  618.346401][    C1]  ? mark_usage (kernel/locking/lockdep.c:4674)
[  618.346402][    C1]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  618.346404][    C1]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6665 (discriminator 2))
[  618.346405][    C1]  __netif_receive_skb_one_core (net/core/dev.c:6203)
[  618.346407][    C1]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  618.346409][    C1]  ? __netif_receive_skb_list_core (net/core/dev.c:6249 (discriminator 2))
[  618.346411][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  618.346413][    C1]  process_backlog (net/core/dev.c:6667)
[  618.346416][    C1]  __napi_poll (net/core/dev.c:7726)
[  618.346418][    C1]  net_rx_action (net/core/dev.c:7789 net/core/dev.c:7946)
[  618.346421][    C1]  ? __napi_poll (./include/net/gro.h:507)
[  618.346423][    C1]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  618.346425][    C1]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[  618.346427][    C1]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[  618.346430][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  618.346431][    C1]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  618.346433][    C1]  handle_softirqs (kernel/softirq.c:622)
[  618.346435][    C1]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[  618.346437][    C1]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[  618.346439][    C1]  do_softirq (kernel/softirq.c:523 (discriminator 19) kernel/softirq.c:510 (discriminator 19))
[  618.346440][    C1]  </IRQ>
[  618.346441][    C1]  <TASK>
[  618.346441][    C1]  ? __dev_queue_xmit (./include/linux/rcupdate.h:310 (discriminator 2) ./include/linux/rcupdate.h:909 (discriminator 2) net/core/dev.c:4906 (discriminator 2))
[  618.346443][    C1]  __local_bh_enable_ip (kernel/softirq.c:450)
[  618.346445][    C1]  __dev_queue_xmit (./include/linux/bottom_half.h:33 (discriminator 2) ./include/linux/rcupdate.h:912 (discriminator 2) net/core/dev.c:4906 (discriminator 2))
[  618.346446][    C1]  ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272)
[  618.346450][    C1]  ? _copy_from_iter_flushcache (./include/linux/iov_iter.h:112)
[  618.346452][    C1]  ? ref_tracker_alloc (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:252 ./include/linux/refcount.h:283 ./include/linux/refcount.h:366 ./include/linux/refcount.h:383 lib/ref_tracker.c:265)
[  618.346454][    C1]  ? netdev_core_pick_tx (net/core/dev.c:4732)
[  618.346458][    C1]  ? packet_release (net/packet/af_packet.c:3171)
[  618.346460][    C1]  packet_snd (net/packet/af_packet.c:3082)
[  618.346463][    C1]  ? tpacket_snd (net/packet/af_packet.c:2685)
[  618.346465][    C1]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[  618.346469][    C1]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[  618.346471][    C1]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[  618.346472][    C1]  __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[  618.346474][    C1]  ? __ia32_sys_getpeername (net/socket.c:2219)
[  618.346477][    C1]  ? sock_ioctl (net/socket.c:1434)
[  618.346480][    C1]  ? __sys_setsockopt (net/socket.c:2406)
[  618.346482][    C1]  __x64_sys_sendto (net/socket.c:2272 net/socket.c:2268 net/socket.c:2268)
[  618.346484][    C1]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  618.346487][    C1]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  618.346489][    C1]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[  618.346490][    C1]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  618.346492][    C1]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  618.346494][    C1]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  618.346495][    C1]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  618.346496][    C1] RIP: 0033:0x7fc3b9d3c08e
[  618.346499][    C1] Code: 4d 89 d8 e8 94 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 94 bd 00 00       	call   0xbd9c
   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
[  618.346501][    C1] RSP: 002b:00007ffe89d9b470 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[  618.346504][    C1] RAX: ffffffffffffffda RBX: 000055e09a69bb52 RCX: 00007fc3b9d3c08e
[  618.346505][    C1] RDX: 000000000000008e RSI: 000055e09a69bb52 RDI: 0000000000000005
[  618.346506][    C1] RBP: 00007ffe89d9b480 R08: 00007ffe89d9b4d0 R09: 0000000000000014
[  618.346507][    C1] R10: 0000000000000000 R11: 0000000000000202 R12: 000055e09a69b830


Finger prints:
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_read_lock_bh