======================================
| [  715.517300][    C2]    entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
| [  715.517417][    C2]
| [  715.517469][    C2]
| [  715.517469][    C2] stack backtrace:
[  715.517652][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  715.517654][    C2] Call Trace:
[  715.517656][    C2]  <IRQ>
[  715.517657][    C2]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[  715.517660][    C2]  print_irq_inversion_bug.part.0.cold (kernel/locking/lockdep.c:4125)
[  715.517663][    C2]  mark_lock_irq (kernel/locking/lockdep.c:4079 kernel/locking/lockdep.c:4158 kernel/locking/lockdep.c:4294)
[  715.517667][    C2]  mark_lock (kernel/locking/lockdep.c:4753)
[  715.517668][    C2]  mark_usage (kernel/locking/lockdep.c:4642)
[  715.517670][    C2]  __lock_acquire (kernel/locking/lockdep.c:5191)
[  715.517671][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  715.517674][    C2]  lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  715.517675][    C2]  ? ipv6_get_lladdr (net/ipv6/addrconf.c:1941)
[  715.517678][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  715.517681][    C2]  ? lock_acquire (./include/trace/events/lock.h:24 (discriminator 22) kernel/locking/lockdep.c:5831 (discriminator 22))
[  715.517683][    C2]  _raw_read_lock_bh (./include/linux/rwlock_api_smp.h:192 (discriminator 3) kernel/locking/spinlock.c:256 (discriminator 3))
[  715.517684][    C2]  ? ipv6_get_lladdr (net/ipv6/addrconf.c:1941)
[  715.517686][    C2]  ipv6_get_lladdr (net/ipv6/addrconf.c:1941)
[  715.517689][    C2]  ndisc_send_ns (net/ipv6/ndisc.c:662)
[  715.517690][    C2]  ? __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))
[  715.517692][    C2]  ? ndisc_parse_options (net/ipv6/ndisc.c:285)
[  715.517694][    C2]  ? __ipv6_chk_addr_and_flags (./include/linux/rcupdate.h:871 net/ipv6/addrconf.c:2015)
[  715.517695][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[  715.517697][    C2]  ndisc_solicit (net/ipv6/ndisc.c:762)
[  715.517699][    C2]  ? ndisc_send_ns (net/ipv6/ndisc.c:672)
[  715.517701][    C2]  ? neigh_probe (net/core/neighbour.c:1094)
[  715.517703][    C2]  neigh_probe (net/core/neighbour.c:1096)
[  715.517705][    C2]  __neigh_event_send (net/core/neighbour.c:1276)
[  715.517707][    C2]  ? warn_bogus_irq_restore (kernel/locking/irqflag-debug.c:8)
[  715.517709][    C2]  neigh_resolve_output (./include/net/neighbour.h:480 ./include/net/neighbour.h:486 ./include/net/neighbour.h:484 net/core/neighbour.c:1603)
[  715.517711][    C2]  ip6_finish_output2 (./include/net/neighbour.h:560 (discriminator 3) net/ipv6/ip6_output.c:136 (discriminator 3))
[  715.517714][    C2]  ? ip6_xmit (net/ipv6/ip6_output.c:328)
[  715.517715][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  715.517717][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  715.517719][    C2]  ? 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))
[  715.517721][    C2]  ip6_finish_output (net/ipv6/ip6_output.c:208 net/ipv6/ip6_output.c:219)
[  715.517723][    C2]  ip6_output (./include/linux/netfilter.h:307 net/ipv6/ip6_output.c:246)
[  715.517725][    C2]  ? ip6_finish_output (./include/linux/skbuff.h:1167)
[  715.517727][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  715.517728][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  715.517729][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  715.517732][    C2]  ip6_forward (./include/net/dst.h:470 (discriminator 4) net/ipv6/ip6_output.c:498 (discriminator 4) ./include/linux/netfilter.h:318 (discriminator 4) ./include/linux/netfilter.h:312 (discriminator 4) net/ipv6/ip6_output.c:690 (discriminator 4))
[  715.517733][    C2]  ? ip6_route_input (./include/linux/skbuff.h:1237 (discriminator 1) net/ipv6/route.c:2662 (discriminator 1))
[  715.517736][    C2]  ? ip6_autoflowlabel (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[  715.517739][    C2]  ? ip6_rcv_core (./include/linux/skbuff.h:3394 net/ipv6/ip6_input.c:332)
[  715.517742][    C2]  ? 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))
[  715.517743][    C2]  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))
[  715.517745][    C2]  ? ip6_rcv_core (net/ipv6/ip6_input.c:211 (discriminator 96))
[  715.517746][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[  715.517748][    C2]  ? validate_chain (kernel/locking/lockdep.c:3801 (discriminator 2) kernel/locking/lockdep.c:3821 (discriminator 2) kernel/locking/lockdep.c:3876 (discriminator 2))
[  715.517749][    C2]  ? mark_usage (kernel/locking/lockdep.c:4674)
[  715.517751][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  715.517752][    C2]  ? lock_unpin_lock (kernel/locking/lockdep.c:5684 (discriminator 6) kernel/locking/lockdep.c:5997 (discriminator 6))
[  715.517754][    C2]  ? process_backlog (./include/linux/local_lock_internal.h:62 (discriminator 2) net/core/dev.c:6665 (discriminator 2))
[  715.517755][    C2]  __netif_receive_skb_one_core (net/core/dev.c:6203)
[  715.517757][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  715.517759][    C2]  ? __netif_receive_skb_list_core (net/core/dev.c:6249 (discriminator 2))
[  715.517761][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  715.517763][    C2]  process_backlog (net/core/dev.c:6667)
[  715.517766][    C2]  __napi_poll (net/core/dev.c:7726)
[  715.517768][    C2]  net_rx_action (net/core/dev.c:7789 net/core/dev.c:7946)
[  715.517771][    C2]  ? __napi_poll (./include/net/gro.h:507)
[  715.517775][    C2]  ? mark_held_locks (kernel/locking/lockdep.c:4325)
[  715.517776][    C2]  handle_softirqs (kernel/softirq.c:622)
[  715.517778][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  715.517780][    C2]  ? _local_bh_enable (kernel/softirq.c:405 (discriminator 1))
[  715.517781][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:752 (discriminator 3))
[  715.517783][    C2]  do_softirq (kernel/softirq.c:523 (discriminator 19) kernel/softirq.c:510 (discriminator 19))
[  715.517785][    C2]  </IRQ>
[  715.517786][    C2]  <TASK>
[  715.517786][    C2]  __local_bh_enable_ip (kernel/softirq.c:450)
[  715.517788][    C2]  __neigh_event_send (./include/linux/bottom_half.h:33 (discriminator 2) net/core/neighbour.c:1279 (discriminator 2))
[  715.517790][    C2]  ? warn_bogus_irq_restore (kernel/locking/irqflag-debug.c:8)
[  715.517792][    C2]  neigh_resolve_output (./include/net/neighbour.h:480 ./include/net/neighbour.h:486 ./include/net/neighbour.h:484 net/core/neighbour.c:1603)
[  715.517794][    C2]  ip6_finish_output2 (./include/net/neighbour.h:560 (discriminator 3) net/ipv6/ip6_output.c:136 (discriminator 3))
[  715.517796][    C2]  ? ip6_xmit (net/ipv6/ip6_output.c:328)
[  715.517798][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  715.517799][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  715.517801][    C2]  ? 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))
[  715.517803][    C2]  ip6_finish_output (net/ipv6/ip6_output.c:208 net/ipv6/ip6_output.c:219)
[  715.517805][    C2]  ip6_output (./include/linux/netfilter.h:307 net/ipv6/ip6_output.c:246)
[  715.517807][    C2]  ? ip6_finish_output (./include/linux/skbuff.h:1167)
[  715.517809][    C2]  ? l3mdev_l3_out.constprop.0 (./include/linux/rcupdate.h:871 ./include/net/l3mdev.h:222)
[  715.517812][    C2]  ip6_send_skb (net/ipv6/ip6_output.c:2018)
[  715.517814][    C2]  rawv6_push_pending_frames (net/ipv6/raw.c:590)
[  715.517816][    C2]  ? ip6_flush_pending_frames (net/ipv6/ip6_output.c:2061 (discriminator 1))
[  715.517818][    C2]  ? rawv6_setsockopt (net/ipv6/raw.c:1018)
[  715.517820][    C2]  ? raw6_destroy (net/ipv6/raw.c:1173)
[  715.517822][    C2]  rawv6_sendmsg (net/ipv6/raw.c:920)
[  715.517823][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5535)
[  715.517826][    C2]  ? rawv6_send_hdrinc (./include/net/sock.h:2922)
[  715.517829][    C2]  ? free_swap_cache (./include/linux/page-flags.h:345 ./include/linux/page-flags.h:572 ./include/linux/page-flags.h:627 mm/swap_state.c:363)
[  715.517833][    C2]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5868 (discriminator 1))
[  715.517836][    C2]  ? __might_fault (mm/memory.c:7340 (discriminator 5))
[  715.517839][    C2]  ? __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[  715.517841][    C2]  __sys_sendto (net/socket.c:787 (discriminator 4) net/socket.c:802 (discriminator 4) net/socket.c:2265 (discriminator 4))
[  715.517843][    C2]  ? __ia32_sys_getpeername (net/socket.c:2219)
[  715.517844][    C2]  ? __pmd_alloc (./include/linux/mm.h:1682)
[  715.517849][    C2]  ? exc_page_fault (arch/x86/mm/fault.c:1474 arch/x86/mm/fault.c:1527)
[  715.517851][    C2]  __x64_sys_sendto (net/socket.c:2272 net/socket.c:2268 net/socket.c:2268)
[  715.517859][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  715.517862][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  715.517863][    C2]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[  715.517865][    C2]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  715.517867][    C2]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  715.517869][    C2]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  715.517870][    C2]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  715.517872][    C2] RIP: 0033:0x7f7e6f43508e
[  715.517875][    C2] 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
[  715.517876][    C2] RSP: 002b:00007fff340e7850 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
[  715.517879][    C2] RAX: ffffffffffffffda RBX: 000055e0df1b20a0 RCX: 00007f7e6f43508e
[  715.517881][    C2] RDX: 0000000000000040 RSI: 000055e0df1b20a4 RDI: 0000000000000006
[  715.517882][    C2] RBP: 00007fff340e7860 R08: 000055e0df1c42b4 R09: 000000000000001c
[  715.517883][    C2] R10: 0000000000000000 R11: 0000000000000202 R12: 000055e0df1b20a4


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